WASTE CONNECTIONS INC/DE
POS AM, 1999-01-06
REFUSE SYSTEMS
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<PAGE>   1
 
   
    AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JANUARY 6, 1999.
    
 
                                                      REGISTRATION NO. 333-65615
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                            ------------------------
 
   
                         POST-EFFECTIVE AMENDMENT NO. 4
    
 
                                       TO
 
                                    FORM S-4
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
                            ------------------------
 
                            WASTE CONNECTIONS, INC.
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)
 
<TABLE>
<S>                                <C>                                <C>
             DELAWARE                             4953                            94-3283464
 (STATE OR OTHER JURISDICTION OF      (PRIMARY STANDARD INDUSTRIAL             (I.R.S. EMPLOYER
  INCORPORATION OR ORGANIZATION)      CLASSIFICATION CODE NUMBER)           IDENTIFICATION NUMBER)
</TABLE>
 
                       2260 DOUGLAS BOULEVARD, SUITE 280
                          ROSEVILLE, CALIFORNIA 95661
                                 (916) 772-2221
  (ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER, INCLUDING AREA CODE, OF
                   REGISTRANT'S PRINCIPAL EXECUTIVE OFFICES)
 
                             RONALD J. MITTELSTAEDT
                PRESIDENT, CHIEF EXECUTIVE OFFICER AND CHAIRMAN
                            WASTE CONNECTIONS, INC.
                       2260 DOUGLAS BOULEVARD, SUITE 280
                          ROSEVILLE, CALIFORNIA 95661
                                 (916) 772-2221
 (NAME, ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER, INCLUDING AREA CODE,
                             OF AGENT FOR SERVICE)
 
                        COPIES OF ALL COMMUNICATIONS TO:
 
                            CAROLYN S. REISER, ESQ.
                        SHARTSIS, FRIESE & GINSBURG LLP
                         ONE MARITIME PLAZA, 18TH FLOOR
                        SAN FRANCISCO, CALIFORNIA 94111
                                 (415) 421-6500
 
        APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC:
   From time to time after the effective date of this Registration Statement.
 
    If the securities being registered on this Form are being offered in
connection with the formation of a holding company and there is compliance with
General Instruction G, check the following box.  [ ]
 
    If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, check the following box and
list the Securities Act registration statement number of the earlier effective
registration statement for the same offering.  [ ]
 
    If this Form is a post-effective amendment filed pursuant to Rule 462(d)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering.  [ ]
 
                       CALCULATION OF REGISTRATION FEE(2)
 
<TABLE>
<S>                                          <C>                        <C>                        <C>
- ----------------------------------------------------------------------------------------------------------------------------
- ----------------------------------------------------------------------------------------------------------------------------
                                                                            PROPOSED MAXIMUM
          TITLE OF EACH CLASS OF                   AMOUNT TO BE            AGGREGATE OFFERING              AMOUNT OF
        SECURITIES TO BE REGISTERED                 REGISTERED                  PRICE(1)              REGISTRATION FEE(3)
- ----------------------------------------------------------------------------------------------------------------------------
Common Stock, $0.01 par value..............      3,000,000 shares              $52,218,750                $15,404.53
- ----------------------------------------------------------------------------------------------------------------------------
- ----------------------------------------------------------------------------------------------------------------------------
</TABLE>
 
(1) Estimated solely for the purpose of calculating the registration fee
    pursuant to Rule 457(c) and based on the average high and low sales prices
    of the Common Stock reported by the Nasdaq National Market on October 9,
    1998.
 
(2) The Prospectus included in this Registration Statement also relates to
    2,478,857 shares registered under Registrant's Registration Statement on
    Form S-4 (Registration No. 333-59199), with respect to which Registrant paid
    a filing fee of $13,665.48, and to 644,165 shares registered under
    Registration Statement on Form S-4 filed under Rule 462(b) on October 13,
    1998, with respect to which Registrant paid a filing fee of $3,307.69.
 
(3) Previously paid.
 
    THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(a) OF THE
SECURITIES ACT OF 1933 OR UNTIL THE REGISTRATION STATEMENT SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(a),
MAY DETERMINE.
 
    Pursuant to Rule 429, the Prospectus included in this Registration Statement
also relates to Registrant's Registration Statement on Form S-4 (Registration
No. 333-59199) and to Registrant's Registration Statement on Form S-4 filed on
October 13, 1998, under Rule 462(b) to increase the number of shares covered by
the Registration Statement on Form S-4, Registration No. 333-59199.
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>   2
 
                            WASTE CONNECTIONS, INC.
 
                 CROSS REFERENCE SHEET SHOWING LOCATION IN THE
                 PROSPECTUS OF INFORMATION REQUIRED BY FORM S-4
 
<TABLE>
<CAPTION>
                  ITEM OF FORM S-4                          LOCATION IN PROSPECTUS
                  ----------------                          ----------------------
<C>  <S>                                          <C>
 1.  Forepart of Registration Statement and       Outside Front Cover Page
     Outside Front Cover Page of Prospectus
 2.  Inside Front and Outside Back Cover Pages    Inside Front Cover Page; Back Cover Page
     of Prospectus
 3.  Risk Factors, Ratio of Earnings to Fixed     Cover Page; Prospectus Summary; Risk
     Charges and Other Information                Factors; Selected Historical and Pro Forma
                                                  Financial and Operating Data
 4.  Terms of the Transaction                     *
 5.  Pro Forma Financial Information              *
 6.  Material Contracts with the Company Being    *
     Acquired
 7.  Additional Information Required for          Outstanding Securities Covered by this
     Reoffering by Persons and Parties Deemed     Prospectus*
     Underwriters
 8.  Interests of Named Experts and Counsel       Experts; Legal Matters
 9.  Disclosure of Commission Position on         **
     Indemnification for Securities Act
     Liabilities
10.  Information with Respect to S-3 Registrants  **
11.  Incorporation of Certain Information By      **
     Reference
12.  Information with Respect to S-2 or S-3       **
     Registrants
13.  Incorporation of Certain Information By      **
     Reference
14.  Information with Respect to Registrants      Prospectus Summary; Summary Historical and
     Other Than S-2 or S-3 Registrants            Pro Forma Financial and Operating Data;
                                                  Price Range of Common Stock; Selected
                                                  Historical and Pro Forma Financial and
                                                  Operating Data; Management's Discussion and
                                                  Analysis of Financial Condition and Results
                                                  of Operations; Business
15.  Information with Respect to S-3 Companies    **
16.  Information with Respect to S-2 or S-3       **
     Companies
17.  Information with Respect to Companies Other  *
     than S-3 or S-2 Companies
18.  Information if Proxies, Consents or          *
     Authorizations are to be Solicited
19.  Information if Proxies, Consents or          *
     Authorizations are not to be Solicited or
     in an Exchange Offer
</TABLE>
 
- ---------------
 * Not applicable or partially not applicable as of the filing of this
   Registration Statement. Information, however, may be included in subsequent
   amendments.
 
** Not applicable or the answer is negative.
<PAGE>   3
 
                                3,000,000 SHARES
 
                                     [LOGO]
 
                                  COMMON STOCK
 
This Prospectus relates to the offer and sale by Waste Connections, Inc. of
shares of its Common Stock at various times as consideration for the Company's
acquisition of solid waste collection, transportation, disposal and recycling
businesses. The prices of these shares will be reasonably related to the Common
Stock's market prices when the parties agree to an acquisition or when the
Company delivers the shares. Each time the Company sells shares under this
Prospectus, it will provide a supplement (a "Prospectus Supplement") or a
post-effective amendment (a "Post-Effective Amendment") to this Prospectus,
which will specify the number of shares issued and the issue price per share,
and will update the information in this Prospectus.
 
On January 4, 1999, the Company had 9,314,290 shares of Common Stock
outstanding. The Company's Common Stock is traded on the Nasdaq National Market
(symbol: WCNX). On December 31, 1998, the last sale price of the Common Stock on
the Nasdaq National Market was $18.375 per share.
 
The Company's executive offices are located at 2260 Douglas Boulevard, Suite
280, Roseville, California 95661, and its telephone number is (916) 772-2221.
 
SEE "RISK FACTORS" BEGINNING ON PAGE 8 FOR A DISCUSSION OF CERTAIN FACTORS THAT
PROSPECTIVE INVESTORS IN COMMON STOCK SHOULD CONSIDER.
 
                            ------------------------
 
NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES
COMMISSION HAS APPROVED OR DISAPPROVED THESE SECURITIES OR DETERMINED WHETHER
THIS PROSPECTUS IS TRUTHFUL OR COMPLETE. ANY REPRESENTATION TO THE CONTRARY IS A
CRIMINAL OFFENSE.
                            ------------------------
 
The date of this Prospectus is January   , 1999.
<PAGE>   4
 
                             AVAILABLE INFORMATION
 
The Company has filed with the Securities and Exchange Commission (the
"Commission") a registration statement on Form S-4 (the "Registration
Statement"). This Prospectus, which forms a part of the Registration Statement,
omits some of the information included in the Registration Statement. You should
refer to the Registration Statement and its exhibits for further information.
 
The Company files annual, quarterly and special reports, proxy statements and
other information with the Commission. You may read and copy the Registration
Statement and any reports, statements or other information on file at the
Commission's public reference rooms in Washington, D.C., Chicago, Illinois and
New York, New York. Please call the Commission at 1-800-732-0330 for further
information on the public reference rooms. You can also request copies of those
documents by writing to the Commission; you will be charged a duplicating fee.
The Company's Commission filings are also available to the public from
commercial document retrieval services and at the web site the Commission
maintains at "http://www.sec.gov." The Company's Common Stock is listed on the
Nasdaq National Market, and you may also inspect and copy the Company's
Commission filings at the offices of the National Association of Securities
Dealers, Inc., located at 1735 K Street, N.W., Washington, D.C. 20549.
 
                                        2
<PAGE>   5
 
                               PROSPECTUS SUMMARY
 
This summary highlights some information from this Prospectus. It may not
contain all of the information that is important to you. To understand this
offering fully, you should read the entire Prospectus carefully, including the
risk factors and the financial statements. Unless otherwise specified, all
references to the "Company" or "Waste Connections" mean Waste Connections, Inc.
and its subsidiaries, and all references to "solid waste" mean non-hazardous
solid waste.
 
                                  THE COMPANY
 
Waste Connections is a regional, integrated solid waste services company that
provides solid waste collection, transfer, disposal and recycling services in
secondary markets of the Western U.S. As of January 4, 1999, the Company served
more than 230,000 commercial, industrial and residential customers in
California, Idaho, Kansas, Nebraska, Oklahoma, Oregon, South Dakota, Utah,
Washington and Wyoming. The Company currently owns and operates 27 collection
operations, seven transfer stations and one Subtitle D landfill, and operates an
additional five transfer stations, one Subtitle D landfill and four recycling
facilities. See "Business -- Introduction" and "-- Services."
 
Waste Connections was founded in September 1997 to execute an acquisition-based
growth strategy in secondary markets of the Western U.S. The Company has
acquired 42 solid waste services related businesses since its formation. It has
identified more than 300 independent operators of such businesses in the states
where it currently operates and believes many of those may be suitable for the
Company to acquire. The Company is also currently assessing potential
acquisitions of solid waste services operations in Colorado, Montana and Texas.
See "Business -- Acquisition Program."
 
The Company has targeted secondary markets in the Western U.S. because it
believes that (i) a large number of independent solid waste services companies
suitable for acquisition by the Company are located in these markets; (ii) there
is less competition in these markets from large, well-capitalized solid waste
services companies; and (iii) these markets have strong projected economic and
population growth rates. In addition, the Company's senior management team has
extensive experience acquiring and operating solid waste services businesses in
the Western U.S.
 
The Company has developed a market-based operating strategy tailored to the
competitive and regulatory factors that affect its markets. In certain Western
U.S. markets, where waste collection services are governed by exclusive
franchise agreements, municipal contracts and governmental certificates
(referred to in Washington as "G certificates"), the Company generally intends
to pursue a collection-based operating strategy. In these markets, the Company
believes that controlling the waste stream by providing collection services
under exclusive franchise agreements, municipal contracts and governmental
certificates is often more important to a solid waste services company's growth
and profitability than owning or operating landfills. In markets where the
Company considers ownership of landfills advantageous due to competitive and
regulatory factors, the Company generally intends to pursue an integrated,
disposal-based strategy. See "Business -- Strategy."
 
The Company's objective is to build a leading solid waste services company in
the secondary markets of the Western U.S. by (i) acquiring collection, transfer,
disposal and
                                        3
<PAGE>   6
 
recycling operations in new markets and through "tuck-in" acquisitions in
existing markets; (ii) securing additional exclusive franchises, municipal
contracts and governmental certificates; (iii) generating internal growth in
existing markets by increasing market penetration and adding services to its
existing operations; and (iv) enhancing profitability by increasing operating
efficiencies of existing and acquired operations. The Company believes that the
experience of the members of its senior management team and their knowledge of
and reputation in the solid waste industry in the Company's targeted markets
will give the Company competitive advantages as it pursues its growth strategy.
See "Business -- Strategy."
 
The Company was incorporated in Delaware in 1997. Its principal executive
offices are located at 2260 Douglas Boulevard, Suite 280, Roseville, California
95661, and its telephone number is (916) 772-2221.
 
           RECENT DEVELOPMENTS SINCE MAY 1998 INITIAL PUBLIC OFFERING
 
PROPOSED MERGER
 
On October 22, 1998, the Company and Murrey's Disposal Company, Inc., American
Disposal Company, Inc., D. M. Disposal Co., Inc. and Tacoma Recycling Company,
Inc. (together, the "Murrey Companies") entered into a merger agreement under
which the Murrey Companies would become wholly owned subsidiaries of the
Company. The Murrey Companies, with approximately $35 million in annual revenue,
provide solid waste services to more than 65,000 customers in the
Seattle-Tacoma, Washington area.
 
The aggregate consideration to be paid by the Company to the shareholders of the
Murrey Companies is 2,750,000 to 3,250,000 shares of the Company's Common Stock,
depending on the Common Stock's closing price immediately prior to the closing
date. The merger is subject to several conditions, including approval of the
Company's stockholders. If these conditions are satisfied, the Company expects
to consummate the merger with the Murrey Companies in January 1999. The
statistical information about the Company given in this Prospectus does not
include the Murrey Companies. However, the financial statements included in this
Prospectus include historical financial statements for the Murrey Companies and
pro forma financial statements that give effect to the Company's acquisition of
the Murrey Companies as if such acquisition had occurred on January 1, 1997, or
on September 30, 1998, as poolings-of-interests.
 
RECENT ACQUISITIONS
 
From its initial public offering in May 1998 to January 4, 1999, the Company
acquired 32 solid waste services businesses, including 17 collection operations,
one Subtitle D landfill, six transfer stations and three recycling operations
representing approximately $50.0 million in annual revenue. These acquisitions
took the Company into five new markets in five new states: Kansas, Nebraska,
Oklahoma, Oregon and Utah. The acquired businesses included "tuck in"
acquisitions in pre-existing markets, new market entries and "tuck in"
acquisitions in the new markets.
                                        4
<PAGE>   7
 
EXPANDED CREDIT FACILITY
 
   
On November 23, 1998, the Company entered into a new credit facility with a
syndicate of banks led by BankBoston, N.A., which among other things, increased
the Company's borrowing capacity from $60.0 million to $115.0 million, modified
certain covenants and lowered the Company's overall borrowing costs. As of
December 31, 1998, the aggregate outstanding principal indebtedness under the
credit facility was approximately $57.3 million. On January 6, 1999, the Company
increased its borrowing capacity under the credit facility to $125.0 million.
    
                                        5
<PAGE>   8
 
                            WASTE CONNECTIONS, INC.
 
         SUMMARY HISTORICAL AND PRO FORMA FINANCIAL AND OPERATING DATA
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
 
<TABLE>
<CAPTION>
                                     PERIOD FROM        PRO FORMA        NINE MONTHS ENDED
                                      INCEPTION          COMBINED       SEPTEMBER 30, 1998
                                 (SEPTEMBER 9, 1997)    YEAR ENDED    -----------------------
                                       THROUGH         DECEMBER 31,                PRO FORMA
                                  DECEMBER 31, 1997      1997(1)       ACTUAL     COMBINED(1)
                                 -------------------   ------------   ---------   -----------
<S>                              <C>                   <C>            <C>         <C>
STATEMENT OF OPERATIONS DATA:
Revenues........................      $   6,237         $  90,221     $  35,336   $    75,551
Cost of operations..............          4,703            67,694        24,007        53,855
Selling, general and
  administrative................            619             9,735         3,518         7,415
Depreciation and amortization...            354             5,710         2,693         5,678
Start-up and integration........            493               493            --            --
Stock compensation..............          4,395             4,395           561           561
                                      ---------         ---------     ---------   -----------
Income (loss) from operations...         (4,327)            2,194         4,557         8,042
Interest expense................         (1,035)           (6,429)       (1,427)       (4,285)
Other income (expense), net.....            (36)              596            --            60
                                      ---------         ---------     ---------   -----------
Income (loss) before income
  taxes.........................         (5,398)           (3,639)        3,130         3,817
Income tax (provision)
  benefit.......................            332              (232)       (1,513)       (1,659)
                                      ---------         ---------     ---------   -----------
Net income (loss) before
  extraordinary Item............         (5,066)           (3,871)        1,617         2,158
Extraordinary item -- early
  extinguishment of debt, net of
  income tax benefit of $165....             --                --          (815)         (815)
                                      ---------         ---------     ---------   -----------
Net income (loss)...............      $  (5,066)        $  (3,871)    $     802   $     1,343
                                      =========         =========     =========   ===========
Redeemable convertible preferred
  stock accretion...............           (531)             (531)         (917)         (917)
                                      ---------         ---------     ---------   -----------
Net income (loss) applicable to
  common stockholders...........      $  (5,597)        $  (4,402)    $    (115)  $       426
                                      =========         =========     =========   ===========
Basic earnings (loss) per common share:
  Income (loss) before
     extraordinary item.........      $   (2.99)        $   (0.81)    $    0.13   $      0.14
                                                                                  ===========
  Extraordinary item............             --                --         (0.15)
                                      ---------         ---------     ---------
  Net loss per common share.....      $   (2.99)        $   (0.81)    $   (0.02)
                                      =========         =========     =========
Diluted earnings (loss) per common share:
  Income (loss) before
     extraordinary item.........      $   (2.99)        $   (0.81)    $    0.09   $      0.12
                                                                                  ===========
  Extraordinary item............             --                --         (0.11)
                                      ---------         ---------     ---------
  Diluted net income (loss) per
     common share...............      $   (2.99)        $   (0.81)    $   (0.02)
                                      =========         =========     =========
Shares used in calculating basic
  earnings (loss) per share.....      1,872,567         5,450,306     5,476,532     8,819,350
Shares used in calculating
  diluted earnings (loss) per
  share.........................      1,872,567         5,450,306     7,438,658    10,404,186
Pro forma basic net income
  (loss)
  per share(2)..................      $   (1.16)                      $    0.11
                                      =========                       =========
Shares used in calculating pro
  forma basic net income (loss)
  per share.....................      4,372,565                       7,117,557
Pro forma diluted net income per
  share(2)......................                                      $    0.09
                                                                      =========
Shares used in calculating pro
  forma diluted net income per
  share.........................                                      8,702,393
</TABLE>
 
                                        6
<PAGE>   9
 
<TABLE>
<CAPTION>
                                                                     SEPTEMBER 30, 1998
                                                                   -----------------------
                                                    DECEMBER 31,               PRO FORMA
                                                        1997        ACTUAL    COMBINED(3)
                                                    ------------   --------   ------------
<S>                                                 <C>            <C>        <C>
BALANCE SHEET DATA:
  Cash and equivalents............................    $   820      $  1,090     $  1,781
  Working capital (deficit).......................        836        (1,482)     (10,922)
  Property and equipment, net.....................      4,185        18,438       42,494
  Total assets....................................     18,880       114,495      151,048
  Long-term debt(4)...............................      6,762        40,404       59,897
  Redeemable convertible preferred stock..........      7,523            --           --
  Total stockholders' equity (deficit)............       (551)       59,822       61,397
</TABLE>
 
- ---------------
(1) Assumes the Company's acquisitions of Arrow Sanitary Service, Inc.
    ("Arrow"), B&B Sanitation, Inc. and Red Carpet Landfill, Inc., and Darlin
    Equipment, Inc. (together with B&B Sanitation, Inc. and Red Carpet Landfill,
    Inc., "B&B") J&J Sanitation, Inc. and Big Red Roll Off, Inc. (together with
    J&J Sanitation, Inc. "J&J"), Contractor's Waste Removal, L.C.
    ("Contractors"), Curry Transfer & Recycling, Inc. ("Curry"), Shrader Refuse
    and Recycling Service Company ("Shrader"), Amador Disposal Service,
    Inc./Mother Lode Sani-Hut, Inc. ("Amador"), Butler County Landfill,
    Inc./Kobus Construction, Inc. ("Butler"), Madera Disposal Systems, Inc.
    ("Madera"), and WCI predecessors and the mergers with the Murrey Companies
    (accounted for as poolings-of-interests) occurred as of January 1, 1997. See
    "Unaudited Pro Forma Financial Statements" included elsewhere herein.
 
(2) Adjusted to reflect the conversion of all outstanding shares of redeemable
    convertible preferred stock for the period from inception (September 9,
    1997) through December 31, 1997, and the conversion of redeemable
    convertible preferred stock and all outstanding shares of redeemable common
    stock for the nine months ended September 30, 1998, as if such conversions
    had occurred as of the first day of each of the periods presented. See Note
    11 of Notes to the Company's Financial Statements for an explanation of the
    pro forma historical per share calculations.
 
(3) Assumes WCI's acquisitions of Amador and Butler occurred on September 30,
    1998 and reflects the mergers of WCI and Murrey Companies as
    poolings-of-interests. See "Unaudited Pro Forma Financial Statements"
    included elsewhere herein.
 
(4) Excludes redeemable convertible preferred stock.
                                        7
<PAGE>   10
 
                                  RISK FACTORS
 
You should carefully consider the following factors and other information in
this Prospectus before purchasing the shares of Common Stock offered by this
Prospectus. This Prospectus contains certain forward-looking statements that
involve risks and uncertainties. Discussions containing such forward-looking
statements are found in the material set forth under "Prospectus Summary," "Risk
Factors," "Management's Discussion and Analysis of Financial Condition and
Results of Operations" and "Business," as well as in the Prospectus generally.
The cautionary statements contained in this Prospectus apply to all related
forward-looking statements wherever they appear in this Prospectus. The
Company's actual results could differ materially from those discussed here as a
result of various factors, including, but not limited to, those discussed below
and elsewhere in this Prospectus.
 
Limited Operating History; Integration of Completed Acquisitions. The Company
was formed in September 1997 and commenced operations on October 1, 1997.
Accordingly, the Company has only a limited operating history on which you may
evaluate its business and its prospects. You should consider the disclosures
about the Company in this Prospectus in light of the risks, expenses and
difficulties that companies frequently encounter in their early stages of
development. The Company's recently assembled senior management team may not be
able to manage the Company successfully or to implement the Company's operating
and growth strategies effectively.
 
The Company's growth and future financial performance depend significantly on
its ability to integrate acquired businesses into its organization and
operations. Part of the Company's strategy is to achieve economies of scale and
operating efficiencies by increasing its size through acquisitions. The Company
may not achieve these goals unless it effectively combines the operations of
acquired businesses with its existing operations. The Company's recently
assembled senior management team may not be able to integrate the Company's
completed and future acquisitions. Any difficulties the Company encounters in
the integration process could materially and adversely affect its business,
financial condition and operating results.
 
Growth Strategy Implementation; Ability to Manage Growth. The Company's growth
strategy includes (i) expanding through acquisitions, (ii) acquiring additional
exclusive franchise agreements and municipal contracts and (iii) generating
internal growth. Whether the Company can execute its growth strategy depends on
several factors, including the success of existing and emerging competition, the
availability of acquisition targets, the ability to maintain profit margins in
the face of competitive pressures, the ability to continue to recruit, train and
retain qualified employees, the strength of demand for the Company's services
and the availability of capital to support its growth.
 
From October 1, 1997, through January 4, 1999, the Company acquired 42 solid
waste services related business. The Company may grow rapidly at times, which
could significantly strain its management, operational, financial and other
resources. To maintain and manage its growth, the Company will need to expand
its management information systems capabilities and its operational and
financial systems and controls. The Company will also need to attract, train,
motivate, retain and manage additional senior managers, technical professionals
and other employees. Failure to do any of these things would materially and
adversely affect the Company's business, financial condition and operating
results. See "Business -- Strategy."
 
                                        8
<PAGE>   11
 
Availability of Acquisition Targets. Although the Company has identified
numerous acquisition candidates that it believes are suitable, the Company may
not be able to acquire them at prices or on terms and conditions favorable to
the Company. The Company's failure to make acquisitions would limit its growth.
See "Business -- Strategy" and "-- Acquisition Program."
 
The Company competes for acquisition candidates with other entities, some of
which have greater financial resources than the Company. Increased competition
for acquisition candidates may make fewer acquisition opportunities available to
the Company, and may cause acquisitions to be made on less attractive terms,
such as higher purchase prices. Acquisition costs may increase to levels that
are beyond the Company's financial capability or that would adversely affect the
Company's operating results and financial condition. The Company's ability to
make acquisitions will depend in part on the relative attractiveness of shares
of the Company's Common Stock as consideration for potential acquisition
candidates. This attractiveness may depend largely on the relative market price
and capital appreciation prospects of the Common Stock compared to the stock of
the Company's competitors. If the market price of the Company's Common Stock
were to decline materially over a prolonged period of time, the Company's
acquisition program could be materially adversely affected.
 
Highly Competitive Industry. The solid waste services industry is highly
competitive and fragmented and requires substantial labor and capital resources.
Some of the markets in which the Company competes or will likely compete are
served by one or more large, national solid waste companies, as well as by
numerous regional and local solid waste companies of varying sizes and
resources, some of which have accumulated substantial goodwill. The Company also
competes with counties, municipalities and solid waste districts that maintain
their own waste collection and disposal operations. These operators may have
financial advantages over the Company, because of their access to user fees and
similar charges, tax revenues and tax-exempt financing. Some of the Company's
competitors may also be better capitalized, have greater name recognition or be
able to provide services at a lower cost than the Company. The Company's
inability to compete with governmental service providers and larger and better
capitalized companies could materially and adversely affect the Company's
business, financial condition and operating results.
 
The Company derives a substantial portion of its revenue from exclusive
municipal contracts and franchise agreements. Many of these will be subject to
competitive bidding at some time in the future. See "Business -- Services." The
Company intends to bid on additional municipal contracts and franchise
agreements. However, the Company may not be the successful bidder to obtain or
retain contracts that come up for competitive bidding. In addition, some of the
Company's customers may terminate their contracts before the end of the contract
term. Municipalities in Washington may by law annex unincorporated territory,
which would remove such territory from the area covered by G certificates issued
by the Washington Utilities and Transportation Commission. Such annexation could
reduce the areas covered by the Company's G certificates and subject more of the
Company's Washington operations to competitive bidding in the future. Moreover,
legislative action could amend or repeal the laws governing G Certificates,
which could materially and adversely affect the Company. See "Business -- G
Certificates." If the Company were not able to replace revenues from contracts
lost through competitive bidding or early termination or the renegotiation of
existing contracts with other revenues
 
                                        9
<PAGE>   12
 
within a reasonable time period, the lost revenues could materially and
adversely affect the Company's business, financial condition and operating
results.
 
Intense competition exists not only to provide services to customers but also to
acquire other businesses within each market. Other companies have adopted or
will probably adopt the Company's strategy of acquiring and consolidating
regional and local businesses to develop a national presence. The Company
expects that increased consolidation in the solid waste services industry will
increase competitive pressures. See "Business -- Competition."
 
Potential Inability to Finance the Company's Potential Growth. The Company
expects to finance future acquisitions through cash from operations, borrowings
under its bank line of credit, the issuance of shares of the Company's Common
Stock and/or seller financing. If acquisition candidates are unwilling to
accept, or the Company is unwilling to issue, shares of the Company's Common
Stock as part of the consideration for such acquisitions, the Company may have
to use more of its available cash resources or borrowings under its credit
facility to fund acquisitions. If cash from operations and borrowings under the
credit facility are insufficient to fund acquisitions, the Company will need
additional equity and/or debt financing. The Company will also need to make
substantial capital expenditures to fund the development or acquisition of new
landfills, transfer stations and other facilities and the maintenance of such
properties. The Company may not have enough capital or be able to raise enough
additional capital on satisfactory terms to meet its capital requirements.
 
The Company's credit facility requires the Company to obtain the consent of the
lending banks before acquiring any other business for more than $10.0 million in
cash (including all liabilities assumed). If the Company is not able to obtain
such consent, it may not be able to complete certain acquisitions, which could
inhibit the Company's growth. The Company's credit facility also contains
financial covenants based on the Company's current and projected financial
condition after completing an acquisition. If the Company cannot satisfy these
financial covenants on a pro forma basis after completing an acquisition, it
would not be able to complete the acquisition without a waiver from its lending
banks. Whether or not a waiver is needed, if the results of the Company's future
operations differ materially from what the Company expects, the Company may no
longer be able to comply with the covenants in the credit facility. The
Company's failure to comply with such covenants may result in a default under
the credit facility, which would allow the Company's banks to accelerate the
date for repayment of debt incurred under the credit facility and materially and
adversely affect the Company's business, financial condition and operating
results. See "Management's Discussion and Analysis of Financial Condition and
Results of Operations -- Liquidity and Capital Resources" and Note 12 of Notes
to the Company's Financial Statements.
 
Dependence on Management. The Company depends significantly on the services of
the members of its senior management team. The departure of any of those persons
might materially and adversely affect the Company's business, financial
condition and operating results. The Company currently maintains "key man" life
insurance with respect to Ronald J. Mittelstaedt, its President, Chief Executive
Officer and Chairman, in the amount of $3.0 million. See "Management." Key
members of the Company's management have entered into employment agreements with
the Company with terms ranging from three to five years. See
"Management -- Employment Agreements." These agreements may not be enforceable
by the Company.
 
                                       10
<PAGE>   13
 
Geographic Concentration. The Company's operations and customers are located in
California, Idaho, Kansas, Nebraska, Oklahoma, Oregon, South Dakota, Utah,
Washington and Wyoming. The Company expects to focus its operations on the
Western U.S. for at least the foreseeable future. The Company estimates that
more than 50% of its pro forma revenues for the nine months ended September 30,
1998, were derived from Washington. If the Company completes its proposed merger
with the Murrey Companies, approximately 60% of its total annualized revenues
will come from customers in Washington immediately after the merger. Therefore,
the Company's business, financial condition and operating results would be
negatively affected by downturns in the general economy in the Western U.S.,
particularly in Washington, and other factors affecting the region, such as
state regulations affecting the solid waste services industry and severe weather
conditions. In addition, the costs and time involved in permitting, and the
scarcity of, available landfills in the Western U.S. could make it difficult for
the Company to expand vertically in those markets. The Company may not complete
enough acquisitions in other markets to lessen its geographic concentration. See
"Business -- Strategy."
 
Seasonality of Business. Based on historic trends experienced by the businesses
acquired by the Company, the Company expects its operating results to vary
seasonally, with revenues typically lowest in the first quarter of the year,
higher in the second and third quarters, and lower in the fourth quarter than in
the second and third quarters. This seasonality reflects the lower volume of
solid waste generated during the late fall, winter and early spring months,
because of decreased construction and demolition activities during the winter
months in the Western U.S. In addition, certain of the Company's operating costs
should be generally higher in the winter months, because adverse winter weather
conditions slow waste collection activities, resulting in higher labor costs,
and greater precipitation increases the weight of collected waste, resulting in
higher disposal costs, which are calculated on a per ton basis. Because the
Company expects most of its operating expenses to remain fairly constant
throughout the fiscal year, it expects operating income to be generally lower in
the winter months. Future seasonal and quarterly fluctuations may materially and
adversely affect the Company's business, financial condition and operating
results. See "Management's Discussion and Analysis of Financial Condition and
Results of Operations."
 
Government Regulation. The Company is subject to extensive and evolving
environmental laws and regulations. These have been enforced more and more
stringently in recent years because of greater public interest in protecting the
environment. These laws and regulations impose substantial costs on the Company
and affect the Company's business in many ways, including as set forth below and
under "Business -- Regulation." In addition, federal, state and local
governments may change the rights they grant to and the restrictions they impose
on solid waste services companies, and such changes could have a material
adverse effect on the Company.
 
To own and operate landfills, the Company must obtain and maintain licenses or
permits and zoning, environmental and/or other land use approvals. These
licenses or permits and approvals are difficult and time-consuming to obtain and
renew, and elected officials and citizens' groups frequently oppose them. See
"Business -- Legal Proceedings." The Company may not be able to obtain and
maintain the permits and approvals it needs to own or operate landfills
(including increasing their capacity), and failing to do so could materially and
adversely affect the Company's operating results and financial condition.
 
                                       11
<PAGE>   14
 
Extensive regulations govern the design, operation and closure of landfills.
These regulations include the regulations ("Subtitle D Regulations") that
establish minimum federal requirements adopted by the U.S. Environmental
Protection Agency (the "EPA") in October 1991 under Subtitle D of the Resource
Conservation and Recovery Act of 1976 ("RCRA"). If the Company fails to comply
with these regulations, it could be required to undertake investigatory or
remedial activities, curtail operations or close a landfill temporarily or
permanently. Future changes to these regulations may require the Company to
modify, supplement or replace equipment or facilities at substantial costs. The
failure of regulatory agencies to enforce these regulations vigorously or
consistently may give an advantage to competitors of the Company whose
facilities do not comply with the Subtitle D Regulations or their state
counterparts. The Company's financial obligations arising from any failure to
comply with these regulations could materially and adversely affect the
Company's business, financial condition and operating results. See "Management's
Discussion and Analysis of Financial Condition and Results of
Operations -- Liquidity and Capital Resources."
 
Companies in the solid waste services business are frequently subject in the
normal course of business to judicial and administrative proceedings involving
federal, state or local agencies or citizens' groups. Governmental agencies may
seek to impose fines or penalties on the Company, to revoke or deny renewal of
the Company's operating permits, franchises or licenses for violations or
alleged violations of environmental laws or regulations, or to require the
Company to remediate potential environmental problems relating to waste that the
Company or its predecessors collected, transported, disposed of or stored. The
Company may also be subject to actions brought by individuals or community
groups in connection with its operations. Any adverse outcome in these
proceedings could have a material adverse effect on the Company's business,
financial condition and operating results and create adverse publicity about the
Company. See "Potential Environmental Liability" below and "Business -- Legal
Proceedings."
 
Potential Environmental Liability. The Company is liable for any environmental
damage that its solid waste facilities cause, including damage to neighboring
landowners or residents, particularly as a result of the contamination of soil,
groundwater or surface water, and especially drinking water. The Company may be
liable for damage resulting from conditions existing before it acquired such
facilities. The Company may also be liable for any off-site environmental
contamination caused by pollutants or hazardous substances whose transportation,
treatment or disposal the Company or its predecessors arranged. Any substantial
liability of the Company for environmental damage could materially and adversely
affect the Company's business, financial condition and operating results. See
"Business -- Regulation."
 
The Comprehensive Environmental Response, Compensation and Liability Act of
1980, as amended ("CERCLA" or "Superfund"), imposes strict, joint and several
liability on the present owners and operators of facilities from which a release
of hazardous substances into the environment has occurred, as well as any party
that owned or operated the facility at the time of disposal of the hazardous
substances, regardless of when the hazardous substance was first detected.
CERCLA defines the term "hazardous substances" very broadly to include more than
700 substances that are specified under RCRA, have specific hazardous
characteristics defined under RCRA or are regulated under any of several other
statutes.
 
                                       12
<PAGE>   15
 
CERCLA imposes similar liability on generators of waste that contains hazardous
substances and on hazardous substance transporters that select the treatment,
storage or disposal site. All such persons, who are referred to as potentially
responsible parties ("PRPs"), generally are jointly and severally liable for the
expense of waste site investigation, waste site cleanup costs and natural
resource damages, regardless of whether they exercised due care and complied
with all relevant laws and regulations. These costs can be very substantial.
Furthermore, liability under CERCLA can be based on the existence of even very
small amounts of hazardous substances; unlike most of the other laws that
regulate hazardous substances, CERCLA does not require any minimum volume or
concentration of a hazardous substance to be present before imposing liability.
It is likely that hazardous substances have in the past come to be located in
landfills that the Company owns or operates. If any of the Company's sites or
operations ever experiences environmental problems, the Company could be subject
to substantial liability, which could materially and adversely affect its
business, financial condition and operating results. The Company has not been
named as a PRP in any action brought under CERCLA. See "Business -- Regulation."
 
Each business that the Company acquires or has acquired may have liabilities
that the Company fails or is unable to discover, including liabilities that
arise from prior owners' failure to comply with environmental laws. As a
successor owner, the Company may be legally responsible for these liabilities.
Even if the Company obtains legally enforceable representations, warranties and
indemnities from the sellers of such businesses, they may not cover fully the
liabilities. Some environmental liabilities, even if the Company does not
expressly assume them, may be imposed on the Company under various legal
theories, particularly under CERCLA. The Company's insurance program does not
cover liabilities associated with any environmental cleanup or remediation of
the Company's own sites. A successful uninsured claim against the Company could
materially and adversely affect the Company's business, financial condition and
operating results. See "Business -- Acquisition Program."
 
Limitations on Landfill Permitting and Expansion. The Company currently owns and
operates one landfill and operates another landfill. The Company's ability to
meet its growth objectives may depend in part on its ability to acquire, lease
and expand landfills and develop new landfill sites. As of January 4, 1999, the
estimated total remaining permitted disposal capacity of the Fairmead Landfill
in Madera County, California operated by the Company was approximately 550,000
tons, with approximately 3.5 million additional tons of disposal capacity in
various stages of permitting. As of that date, the estimated total remaining
permitted disposal capacity of the Red Carpet Landfill in Major County, Oklahoma
owned and operated by the Company was approximately 625,000 tons, with
approximately 1.7 million additional tons of disposal capacity in various stages
of permitting. The Company may not be able to obtain new landfill sites or
expand the permitted capacity of the Fairmead and Red Carpet Landfills when
necessary.
 
In some areas in which the Company operates, suitable land for new sites or
expansion of existing landfill sites may be unavailable. Operating permits for
landfills in states where the Company operates must generally be renewed at
least every five years. Obtaining required permits and approvals to build,
operate and expand solid waste management facilities, including landfills and
transfer stations, has become increasingly difficult and expensive. It often
takes several years, requires numerous hearings and compliance with zoning,
environmental and other requirements and is resisted by citizen, public interest
or other
 
                                       13
<PAGE>   16
 
groups. The Company may not be able to obtain or maintain the permits it
requires to expand, and such permits may contain burdensome terms and
conditions. Even when granted, final permits to expand are often not approved
until the remaining permitted disposal capacity of a landfill is very low. Local
laws and ordinances also may affect the Company's ability to obtain permits to
expand landfills. If the Company were to exhaust its permitted capacity at a
landfill, its ability to expand internally would be limited, and the Company
could be required to cap and close that landfill and forced to dispose of
collected waste at more distant landfills or at landfills operated by its
competitors. The resulting increased costs would materially and adversely affect
the Company's business, financial condition and operating results. See
"Business -- Services -- Landfills."
 
Alternatives to Landfill Disposal; Waste Reduction Programs. Alternatives to
landfill disposal, such as recycling, composting and incineration, are available
in some areas in which the Company operates. In addition, state and local
authorities increasingly require recycling and waste reduction at the source and
prohibit the disposal of certain types of wastes, such as yard wastes, at
landfills. These developments may reduce the volume of waste in certain areas.
For example, California has adopted plans that set goals for percentages of
certain solid waste items to be recycled, which are being phased in over the
next several years. Increased use of alternatives to landfill disposal may
materially and adversely affect the Company's business, financial condition and
operating results.
 
Potential Inadequacy of Accruals for Closure and Post-Closure Costs. The Company
may be required to pay closure and post-closure costs of landfills and any
disposal facilities that it owns or operates. The Company accrues for future
closure and post-closure costs of its owned landfills (generally for a term of
30 years after final closure of a landfill), based on engineering estimates of
consumption of permitted landfill airspace over the useful life of any such
landfill. The Company's obligations to pay closing or post-closing costs may
exceed the amount the Company accrued and reserved and other amounts available
from funds or reserves established to pay such costs. This could materially and
adversely affect the Company's business, financial condition and operating
results. See "Management's Discussion and Analysis of Financial Condition and
Results of Operations" and "Business -- Services -- Landfills."
 
Charges Related to Capitalized Expenditures. In accordance with generally
accepted accounting principles, the Company capitalizes some expenditures and
advances relating to acquisitions, pending acquisitions and landfill development
projects. As of September 30, 1998, the Company had no capitalized expenditures
relating to landfill development projects and $32,610 in capitalized
expenditures relating to acquisitions and pending acquisitions. The Company
expenses indirect acquisition costs such as executive salaries, general
corporate overhead, public affairs and other corporate services as it incurs
those costs. The Company charges against earnings any unamortized capitalized
expenditures and advances (net of any portion thereof that the Company estimates
it will recover, through sale or otherwise) that relate to any operation that is
permanently shut down, any pending acquisition that is not consummated and any
landfill development project that the Company does not expect to complete.
Therefore, the Company may incur charges against earnings in future periods,
which could materially and adversely affect the Company's business, financial
condition and operating results. See "Management's Discussion and Analysis of
Financial Condition and Results of Operations."
 
                                       14
<PAGE>   17
 
Potential Inability to Obtain Performance or Surety Bonds, Letters of Credit or
Insurance. Municipal solid waste services contracts and landfill closure
obligations may require the Company to obtain performance or surety bonds,
letters of credit, or other means of financial assurance to secure its
performance. Some of the Company's existing solid waste collection and recycling
contracts require the Company to obtain performance bonds, which it has
obtained. If the Company in the future is not able to obtain performance or
surety bonds or letters of credit in sufficient amounts or at acceptable rates,
it may not be able to enter into additional municipal solid waste services
contracts or obtain or retain landfill operating permits. Any future difficulty
in obtaining insurance could also make it more difficult for the Company to
secure future contracts conditioned on the contractor's having adequate
insurance coverage. The Company's failure to obtain means of financial assurance
or adequate insurance coverage could materially and adversely affect its
business, financial condition and operating results. See "Business -- Risk
Management, Insurance and Performance Bonds."
 
Commodity Risk On Resale of Recyclables. The Company provides recycling services
to some of its customers. The sale prices of and demand for recyclable waste
products, particularly wastepaper, are frequently volatile and may affect the
Company's operating results. See "Business -- Services -- Recycling and Other
Services."
 
Potential Anti-Takeover Effect of Certain Charter and By-Law Provisions and
Delaware Law. Under the Company's Amended and Restated Certificate of
Incorporation (the "Restated Certificate of Incorporation") and Amended and
Restated By-Laws (the "Restated By-Laws"), the Company's Board of Directors is
divided into three classes of directors who serve staggered three-year terms. As
a result, approximately one-third of the Company's Board is elected each year.
The classified Board is intended to ensure continuity and stability in the
Board's composition and policies if another party attempts a hostile takeover of
the Company or initiates a proxy contest. The classification of the Board
extends the time required to change the control of the Board and may discourage
any hostile takeover bid for the Company. The classified Board may also make it
harder to remove the Company's incumbent management, even if such removal would
generally benefit stockholders. Therefore, it may discourage some tender offers.
 
The authorized capital of the Company includes 10,000,000 shares of "blank
check" Preferred Stock. No shares of Preferred Stock are currently outstanding.
The Company may issue Preferred Stock and determine its price, rights,
preferences, privileges and restrictions, including voting and dividend rights,
without stockholder approval. The rights of holders of Preferred Stock that the
Company may issue in the future may adversely affect the rights of the holders
of Common Stock. The issuance of Preferred Stock may make it more difficult for
a third party to acquire the Company. The Company has no present plan to issue
Preferred Stock.
 
The Company is subject to the anti-takeover provisions of Section 203 of the
Delaware General Corporation Law. That section generally prohibits the Company
from engaging in a "business combination" with an "interested stockholder" for
three years after the time that such stockholder became an interested
stockholder. Section 203 also could delay or prevent a change of control of the
Company. These provisions, and provisions of the Restated Certificate of
Incorporation and Restated By-Laws, may deter hostile takeovers or delay or
prevent changes in control or management of the Company, including transactions
in which stockholders might be paid more than current market prices for their
shares.
 
                                       15
<PAGE>   18
 
These provisions may also limit stockholders' ability to approve transactions
that they believe are in their best interests. See "Description of Capital
Stock -- Preferred Stock" and "-- Certain Statutory, Charter and By-Law
Provisions."
 
   
Subsequent Share Issuances; Shares Eligible for Future Sale. The market price of
the Company's Common Stock could drop if a large number of shares of Common
Stock are sold in the public market, or if market participants believe that such
sales could occur, or if the Company issues a large number of shares in
acquisitions. The Company intends to make a public offering of between 2,750,000
and 3,500,000 shares of its Common Stock for cash in an underwritten public
offering shortly after the closing of its acquisition of the Murrey Companies. A
portion of the overallotment option granted to the underwriters may include
shares of Common Stock of certain non-management shareholders of the Company.
The net proceeds of the offering to the Company will be used to reduce
indebtedness under the Company's credit facility and for acquisitions, capital
expenditures and working capital. The Company can give no assurance that this
public offering, which can be made only by means of a prospectus filed with the
Securities and Exchange Commission, will be filed or, if filed, will be
successful. Such issuances could also make it more difficult for the Company to
fund acquisitions by issuing Common Stock. Shares issued under this Registration
Statement may generally be sold in the public market immediately after they are
issued. See "Shares Eligible for Future Sale."
    
 
Fluctuations in Quarterly Results; Potential Stock Price Volatility. The Company
believes that investors should not rely on period-to-period comparisons of its
operating results as an indication of future performance. Many factors,
including general economic conditions, government regulatory action,
acquisitions, capital expenditures and other costs related to expanding
operations and services, pricing changes and adverse weather conditions, may
cause the Company's operating results to fall below the expectations of
securities analysts and investors in future quarters. This would likely cause
the price of the Company's Common Stock to drop. In addition, the stock market
sometimes experiences large price and volume fluctuations generally. Although
these broad market fluctuations may not relate to the operating performance of
companies whose securities are publicly traded, they may cause the market price
of such companies' stock, including the Company's Common Stock, to drop. After
periods of volatility in the market price of a company's securities,
shareholders often bring class action lawsuits against that company. The Company
may be the target of such lawsuits in the future, which could be expensive and
divert management's attention and resources. This could materially and adversely
affect the Company's business, financial condition and operating results. In
addition, any adverse determination in any such lawsuit could subject the
Company to significant liabilities.
 
No Dividends. The Company does not intend to pay cash dividends on the Common
Stock. In addition, the Company's credit facility prohibits the Company from
paying dividends without the consent of the lenders. See "Dividend Policy."
 
Impact of the Year 2000. The Company will need to modify or replace portions of
its software so that its computer systems will function properly with respect to
dates in the year 2000 ("Year 2000") and afterwards. The Company expects to
complete those modifications and upgrades during 1999, at a total cost of
approximately $100,000. The Company has spent part of its Year 2000 budget on
replacing its billing systems in Maltby and Vancouver. Because the Company's
operations rely primarily on mechanical systems such as trucks to collect solid
waste, the Company does not expect its operations to be
 
                                       16
<PAGE>   19
 
significantly affected by Year 2000 issues. The Company's customers may need to
make Year 2000 modifications to software and hardware that they use to generate
records, bills and payments relating to the Company. The Company does not rely
on vendors on a routine basis except for providers of disposal services. The
Company takes waste to a site and is normally billed based on tonnage received.
The Company believes that if its disposal vendors encounter Year 2000 problems,
they will convert to manual billing based on scale recordings until they resolve
those issues.
 
In assessing the Company's exposure to Year 2000 issues, management believes its
biggest challenges lie in the following areas: Year 2000 issues at the Company's
banks, large (typically municipal) customers, and acquired businesses between
the time the Company acquires them and the time the Company implements its own
systems. The Company is obtaining Year 2000 compliance certifications from its
vendors, banks and customers. If the Company and its vendors, banks and
customers do not complete the required Year 2000 modifications on time, the Year
2000 issue could materially affect the Company's operations. The Company
believes, however, that in the most reasonably likely worst case, the effects of
Year 2000 issues on its operations would be brief and small relative to the
Company's overall operations. The Company has not made a contingency plan to
minimize operational problems if the Company and its vendors, banks and
customers do not timely complete all required Year 2000 modifications.
 
                                DIVIDEND POLICY
 
The Company has never paid cash dividends on its Common Stock. The Company does
not currently anticipate paying any cash dividends on the Common Stock. The
Company intends to retain all earnings to fund the operation and expansion of
its business. In addition, the Company's credit facility restricts the payment
of cash dividends.
 
                          PRICE RANGE OF COMMON STOCK
 
The Company's Common Stock is traded on the Nasdaq National Market under the
symbol "WCNX." The following table shows the high and low sale prices for the
Common Stock for the period from May 22, 1998, the date of the Company's initial
public offering, through December 31, 1998.
 
<TABLE>
<CAPTION>
                            1998                               HIGH        LOW
                            ----                              -------    -------
<S>                                                           <C>        <C>
Second Quarter (from May 22, 1998)..........................  $ 20.75    $    13.75
Third Quarter...............................................  $23.375    $    17.75
Fourth Quarter..............................................  $21.125    $    15.875
</TABLE>
 
On December 31, 1998, the last sale price of the Common Stock as reported by the
Nasdaq National Market was $18.375 per share. See "Description of Capital
Stock."
 
                                       17
<PAGE>   20
 
         SELECTED HISTORICAL AND PRO FORMA FINANCIAL AND OPERATING DATA
 
The following table presents selected historical and pro forma consolidated
statements of operations and balance sheet data of the Company and its
predecessors for the periods indicated.
 
The entities the Company acquired in September 1997 from BFI are collectively
referred to as the Company's predecessors. BFI acquired the predecessors during
1995 and 1996. Before being acquired by BFI, the predecessors operated as
separate stand-alone businesses. The selected financial information of the
Company's predecessors as of December 31, 1996, for the nine months ended
September 30, 1997, and for the years ended December 31, 1995 and 1996 is based
on audited financial statements included elsewhere in this Prospectus. The
selected financial information of the Company as of December 31, 1997, and for
the period from inception (September 9, 1997) through December 31, 1997, is
based on audited financial statements included elsewhere in this Prospectus. The
selected financial information of the Company's predecessors as of December 31,
1993, 1994 and 1995, and for the years ended December 31, 1993 and 1994 is based
on financial statements that have not been audited. The Company's selected
financial information as of September 30, 1998 and for the nine months ended
September 30, 1997 and 1998 is based on unaudited financial statements included
elsewhere in this Prospectus. The Company's management believes that the
unaudited financial data include all adjustments, consisting only of normal
recurring adjustments, necessary to fairly present the financial position and
operating results for the unaudited periods. The Company's operating results for
the nine months ended September 30, 1998 do not necessarily indicate the results
that may be expected for the year ended December 31, 1998. Various factors
affect the year-to-year comparability of the amounts presented. See
"Management's Discussion and Analysis of Financial Condition and Results of
Operations -- Basis of Presentation" and "-- Results of Operations" for
additional information about the Company and its predecessors.
 
The selected pro forma financial information for the nine months ended September
30, 1998 and for the year ended December 31, 1997, has been adjusted to reflect
the Company's acquisitions of Arrow, B&B, J&J, Contractors, Curry, Shrader,
Amador, Butler, Madera (accounted for as purchases) and the Company's
predecessors and the mergers with the Murrey Companies (accounted for as
poolings-of-interests) as of the dates and for the periods indicated. This
information is based on unaudited pro forma financial statements included
elsewhere in this Prospectus. The pro forma financial information does not
represent what the Company's results actually would have been had those events
occurred on the dates indicated, and it does not project the Company's future
results.
 
You should read the selected historical and pro forma financial information with
Management's Discussion and Analysis of Financial Condition and Results of
Operations, the audited and unaudited Financial Statements and Notes of the
Company and its predecessors, and the Unaudited Pro Forma Financial Statements
and Notes included in this Prospectus.
 
                                       18
<PAGE>   21
 
                    WASTE CONNECTIONS, INC. AND PREDECESSORS
 
         SELECTED HISTORICAL AND PRO FORMA FINANCIAL AND OPERATING DATA
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
<TABLE>
<CAPTION>
 
                                                                                             FIBRES
                                                                                         INTERNATIONAL,
                                              THE                             THE             INC.
                             FIBRES         DISPOSAL         FIBRES         DISPOSAL      PERIOD FROM
                          INTERNATIONAL      GROUP       INTERNATIONAL,      GROUP         JANUARY 1,     PREDECESSORS
                              INC.          COMBINED          INC.          COMBINED          1995         ONE MONTH
                           YEAR ENDED      YEAR ENDED      YEAR ENDED      YEAR ENDED       THROUGH          ENDED
                          DECEMBER 31,    DECEMBER 31,    DECEMBER 31,    DECEMBER 31,    NOVEMBER 30,    DECEMBER 31,
                              1993            1993            1994            1994            1995            1995
                          -------------   ------------   --------------   ------------   --------------   ------------
<S>                       <C>             <C>            <C>              <C>            <C>              <C>
STATEMENTS OF OPERATIONS
  DATA(1):
Revenues................     $3,787         $20,794          $5,610         $22,004          $7,340           $595
Cost of operations......      2,737          16,775           4,432          18,298           5,653            527
Selling, general and
  administrative........        553           3,559             552           3,320             823             72
Depreciation and
  amortization..........        428             520             642             606             715             74
                             ------         -------          ------         -------          ------           ----
Income (loss) from
  operations............         69             (60)            (16)           (220)            149            (78)
Interest expense........        (78)           (390)           (191)           (548)           (162)            (1)
Other income (expense),
  net...................          1             684              (2)            871              98              5
                             ------         -------          ------         -------          ------           ----
Income (loss) before
  income taxes..........         (8)            234            (209)            103              85            (74)
Income tax (provision)
  benefit...............         --             (77)             --              --             (29)            --
                             ------         -------          ------         -------          ------           ----
Net income (loss).......     $   (8)        $   157          $ (209)        $   103          $   56           $(74)
                             ======         =======          ======         =======          ======           ====
 
<CAPTION>
                                            THE
                                          DISPOSAL
                              THE          GROUP
                            DISPOSAL      COMBINED
                             PERIOD         FROM      PREDECESSORS
                             GROUP       JANUARY 1,     COMBINED
                            COMBINED        1996         PERIOD
                           YEAR ENDED     THROUGH        ENDED
                          DECEMBER 31,    JULY 31,    DECEMBER 31,
                              1995          1996          1996
                          ------------   ----------   ------------
<S>                       <C>            <C>          <C>
STATEMENTS OF OPERATIONS
  DATA(1):
Revenues................    $19,660        $8,738       $13,422
Cost of operations......     16,393         6,174        11,420
Selling, general and
  administrative........      3,312         2,126         1,649
Depreciation and
  amortization..........        628           324           962
                            -------        ------       -------
Income (loss) from
  operations............       (673)          114          (609)
Interest expense........       (206)          (12)         (225)
Other income (expense),
  net...................         --         2,661          (147)
                            -------        ------       -------
Income (loss) before
  income taxes..........       (879)        2,763          (981)
Income tax (provision)
  benefit...............        298          (505)           --
                            -------        ------       -------
Net income (loss).......    $  (581)       $2,258       $  (981)
                            =======        ======       =======
</TABLE>
 
                           (See footnotes on page 21)
 
                                       19
<PAGE>   22
<TABLE>
<CAPTION>
                                                          WASTE
                                                    CONNECTIONS, INC.
                                    PREDECESSORS       PERIOD FROM
                                      COMBINED          INCEPTION                          PRO FORMA
                                     NINE MONTHS      (SEPTEMBER 9,      PRO FORMA       COMBINED YEAR
                                        ENDED         1997) THROUGH      YEAR ENDED          ENDED
                                    SEPTEMBER 30,     DECEMBER 31,      DECEMBER 31,     DECEMBER 31,
                                        1997              1997            1997(2)           1997(3)
                                    -------------   -----------------   ------------   -----------------
<S>                                 <C>             <C>                 <C>            <C>
STATEMENTS OF OPERATIONS DATA(1):
  Revenues.........................  $   18,114        $    6,237        $   61,347       $   90,221
  Cost of operations...............      14,753             4,703            44,561           67,694
  Selling, general and
    administrative.................       3,009               619             7,412            9,735
  Depreciation and amortization....       1,083               354             4,339            5,710
  Start-up and integration.........          --               493               493              493
  Stock compensation...............          --             4,395             4,395            4,395
                                     ----------        ----------        ----------       ----------
  Income (loss) from operations....        (731)           (4,327)              147            2,194
  Interest expense.................        (456)           (1,035)           (6,049)          (6,429)
  Other income (expense), net......          14               (36)              313              596
                                     ----------        ----------        ----------       ----------
  Income (loss) before income
    taxes..........................      (1,173)           (5,398)           (5,589)          (3,639)
  Income tax (provision) benefit...          --               332               402             (232)
                                     ----------        ----------        ----------       ----------
  Net income (loss) before
    extraordinary item.............      (1,173)           (5,066)           (5,187)          (3,871)
  Extraordinary item -- early
    extinguishment of debt, net of
    income tax benefit of $165.....          --                --                --               --
                                     ----------        ----------        ----------       ----------
  Net income (loss)................  $   (1,173)       $   (5,066)       $   (5,187)      $   (3,871)
                                     ==========        ==========        ==========       ==========
  Redeemable convertible referred
    stock accretion................                          (531)             (531)            (531)
                                                       ----------        ----------       ----------
  Net income (loss) applicable to
    common stockholders............                    $   (5,597)       $   (5,718)      $   (4,402)
                                                       ==========        ==========       ==========
  Basic earnings (loss) per common
    share:
    Income (loss) before
      extraordinary item...........                    $    (2.99)       $    (2.12)      $    (0.81)
    Extraordinary item.............                            --                --               --
                                                       ----------        ----------       ----------
    Net income (loss) per common
      share........................                    $    (2.99)       $    (2.12)      $    (0.81)
                                                       ==========        ==========       ==========
  Diluted earnings (loss) per
    common share:
    Income (loss) before
      extraordinary item...........                    $    (2.99)       $    (2.12)      $    (0.81)
    Extraordinary item.............                            --                --               --
                                                       ----------        ----------       ----------
    Diluted net income (loss) per
      common share.................                    $    (2.99)            (2.12)      $    (0.81)
                                                       ==========        ==========       ==========
  Shares used in calculating basic
    earnings (loss) per share......                     1,872,567         2,700,306        5,450,306
  Shares used in calculating
    diluted earnings (loss) per
    share..........................                     1,872,567         2,700,306        5,450,306
  Pro forma basic net income (loss)
    per share(4)...................                    $    (1.16)
                                                       ==========
  Shares used in calculating pro
    forma basic net income (loss)
    per share......................                     4,372,565
  Pro forma diluted net income per
    share(4).......................
  Shares used in calculating pro
    forma diluted net income per
    share..........................
 
<CAPTION>
 
                                                WASTE CONNECTIONS, INC.
                                                   NINE MONTHS ENDED
                                                  SEPTEMBER 30, 1998
                                     ---------------------------------------------
                                                                     PRO FORMA
                                       ACTUAL     PRO FORMA(2)      COMBINED(3)
                                     ----------   ------------   -----------------
<S>                                  <C>          <C>            <C>
STATEMENTS OF OPERATIONS DATA(1):
  Revenues.........................  $   35,336    $   51,019       $    75,551
  Cost of operations...............      24,007        34,518            53,855
  Selling, general and
    administrative.................       3,518         5,545             7,415
  Depreciation and amortization....       2,693         4,038             5,678
  Start-up and integration.........          --            --                --
  Stock compensation...............         561           561               561
                                     ----------    ----------       -----------
  Income (loss) from operations....       4,557         6,357             8,042
  Interest expense.................      (1,427)       (3,862)           (4,285)
  Other income (expense), net......          --           157                60
                                     ----------    ----------       -----------
  Income (loss) before income
    taxes..........................       3,130         2,652             3,817
  Income tax (provision) benefit...      (1,513)       (1,245)           (1,659)
                                     ----------    ----------       -----------
  Net income (loss) before
    extraordinary item.............       1,617         1,407             2,158
  Extraordinary item -- early
    extinguishment of debt, net of
    income tax benefit of $165.....        (815)         (815)             (815)
                                     ----------    ----------       -----------
  Net income (loss)................  $      802    $      592       $     1,343
                                     ==========    ==========       ===========
  Redeemable convertible referred
    stock accretion................        (917)         (917)             (917)
                                     ----------    ----------       -----------
  Net income (loss) applicable to
    common stockholders............  $     (115)   $     (325)      $       426
                                     ==========    ==========       ===========
  Basic earnings (loss) per common
    share:
    Income (loss) before
      extraordinary item...........  $     0.13    $     0.08       $      0.14
                                                   ==========       ===========
    Extraordinary item.............       (0.15)
                                     ----------
    Net income (loss) per common
      share........................  $    (0.02)
                                     ==========
  Diluted earnings (loss) per
    common share:
    Income (loss) before
      extraordinary item...........  $     0.09    $     0.06       $      0.12
                                                   ==========       ===========
    Extraordinary item.............       (0.11)
                                     ----------
    Diluted net income (loss) per
      common share.................  $    (0.02)
                                     ==========
  Shares used in calculating basic
    earnings (loss) per share......   5,476,532     6,069,350         8,819,350
  Shares used in calculating
    diluted earnings (loss) per
    share..........................   7,438,658     7,654,186        10,404,186
  Pro forma basic net income (loss)
    per share(4)...................  $     0.11
                                     ==========
  Shares used in calculating pro
    forma basic net income (loss)
    per share......................   7,117,557
  Pro forma diluted net income per
    share(4).......................  $     0.09
                                     ==========
  Shares used in calculating pro
    forma diluted net income per
    share..........................   8,702,393
</TABLE>
 
                       (See footnotes on following page)
 
                                       20
<PAGE>   23
<TABLE>
<CAPTION>
 
                                               FIBRES       THE DISPOSAL       FIBRES       THE DISPOSAL
                                           INTERNATIONAL,      GROUP       INTERNATIONAL,      GROUP       PREDECESSORS
                                                INC.          COMBINED          INC.          COMBINED       COMBINED
                                            DECEMBER 31,    DECEMBER 31,    DECEMBER 31,    DECEMBER 31,   DECEMBER 31,
                                                1993            1993            1994            1994           1995
                                           --------------   ------------   --------------   ------------   ------------
<S>                                        <C>              <C>            <C>              <C>            <C>
BALANCE SHEET DATA(1):
 Cash and equivalents....................      $    3         $   196          $  321         $   203         $  184
 Working capital (deficit)...............         494          (1,497)            155          (4,279)            90
 Property and equipment, net.............       1,454           2,440           3,810           2,771          4,035
 Total assets............................       3,325           7,455           6,317           7,318          9,151
 Long-term debt(7).......................       1,167           1,258           2,353              90            149
 Redeemable convertible preferred
   stock.................................          --              --              --              --             --
 Total stockholders' equity (deficit)....         991            (163)          3,045          (1,486)            --
 
<CAPTION>
                                                                                       WASTE CONNECTIONS, INC.
                                           THE DISPOSAL                  ----------------------------------------------------
                                              GROUP       PREDECESSORS                    SEPTEMBER 30, 1998
                                             COMBINED       COMBINED     ----------------------------------------------------
                                           DECEMBER 31,   DECEMBER 31,   DECEMBER 31,                              PRO FORMA
                                               1995           1996           1997        ACTUAL    PRO FORMA(5)   COMBINED(6)
                                           ------------   ------------   ------------   --------   ------------   -----------
<S>                                        <C>            <C>            <C>            <C>        <C>            <C>
BALANCE SHEET DATA(1):
 Cash and equivalents....................    $   961        $   102        $   820      $  1,090     $  1,376      $  1,781
 Working capital (deficit)...............      2,498            695            836        (1,482)      (1,073)      (10,922)
 Property and equipment, net.............      2,221          5,069          4,185        18,438       28,123        42,494
 Total assets............................      6,942         15,291         18,880       114,495      131,140       151,048
 Long-term debt(7).......................      6,890             89          6,762        40,404       55,850        59,897
 Redeemable convertible preferred
   stock.................................         --             --          7,523            --           --            --
 Total stockholders' equity (deficit)....     (2,067)            --           (551)       59,822       59,822        61,397
</TABLE>
 
- ---------------
(1) The entities the Company acquired in September 1997 from BFI are
    collectively called the Company's predecessors. BFI acquired the
    predecessors at various times during 1995 and 1996, and prior to being
    acquired by BFI, the predecessors operated as separate stand-alone
    businesses. Various factors affect the year-to-year comparability of the
    amounts presented. See "Management's Discussion and Analysis of Financial
    Condition and Results of Operations -- Basis of Presentation" and
    "-- Results of Operations" for additional information concerning the Company
    and its predecessors.
 
(2) Assumes the Company's acquisitions of Arrow, B&B, J&J, Contractors, Curry,
    Shrader, Amador, Butler, Madera and the Company's predecessors occurred as
    of the beginning of the periods presented. See "Unaudited Pro Forma
    Financial Statements" included elsewhere herein.
 
(3) Assumes the Company's acquisitions of Arrow, B&B, J&J, Contractors, Curry,
    Shrader, Amador, Butler, Madera and the Company's predecessors occurred as
    of the beginning of the periods presented and reflects the mergers with the
    Murrey Companies (accounted for as poolings-of-interests). See "Unaudited
    Pro Forma Financial Statements" included elsewhere herein.
 
(4) Adjusted to reflect the conversion of all outstanding shares of redeemable
    convertible preferred stock for the period from inception through December
    31, 1997, and the conversion of redeemable convertible preferred stock and
    all outstanding shares of redeemable common stock for the nine months ended
    September 30, 1998, as if such conversions had occurred as of the first day
    of each of the periods presented. See Note 11 of Notes to the Company's
    Financial Statements included elsewhere herein for an explanation of the pro
    forma historical per share calculations.
 
(5) Assumes WCI's acquisition of Amador and Butler occurred on September 30,
    1998. See "Unaudited Pro Forma Financial Statements" included elsewhere
    herein.
 
(6) Assumes the Company's acquisitions of Amador and Butler occurred on
    September 30, 1998, and reflects the mergers with the Murrey Companies as
    poolings-of-interests. See "Unaudited Pro Forma Financial Statements"
    included elsewhere herein.
 
(7) Excludes redeemable convertible preferred stock.
 
                                       21
<PAGE>   24
 
                    MANAGEMENT'S DISCUSSION AND ANALYSIS OF
                 FINANCIAL CONDITION AND RESULTS OF OPERATIONS
 
You should read this discussion in conjunction with the audited and unaudited
financial statements and other financial information in this Prospectus. This
Prospectus contains forward-looking statements that involve risks and
uncertainties. The Company's actual results may differ materially from those
discussed in the forward-looking statements because of various factors,
including, but not limited to, those listed in "Risk Factors" and the matters
discussed in this Prospectus generally.
 
OVERVIEW
 
Waste Connections is a regional, integrated solid waste services company that
provides solid waste collection, transfer, disposal and recycling services in
secondary markets of the Western U.S.
 
The Company generally intends to pursue an acquisition-based growth strategy and
has acquired 42 companies since its inception in September 1997. The Company
accounted for all of these acquisitions as purchases. Accordingly, the Company
has included the operating results of these acquired businesses in the Company's
financial statements only from the dates that the Company acquired them. The
Company expects a substantial part of its future growth to come from acquiring
additional solid waste collection, transfer and disposal businesses. Additional
acquisitions could continue to affect period-to-period comparisons of its
operating results. The Company also expects to invest in collection vehicles and
equipment, maintenance of existing equipment, and management information
systems, which should enable the Company to expand internally and through
acquisitions based on its existing infrastructure. The Company expects to fund
future acquisitions through cash from operations, borrowings under its bank line
of credit, the issuance of shares of the Company's Common Stock and/or seller
financing. As of January 4, 1999, the Company had consummated the following
acquisitions:
 
Initial Acquisitions. In September 1997, the Company joined with two other
parties to bid on certain solid waste and recycling businesses offered for sale
by BFI. The Company acquired the stock of Browning-Ferris Industries of
Washington, Inc., a provider of solid waste services to more than 78,000
customers through three municipal contracts and one G certificate in
southwestern Washington, and the stock of its subsidiary, Fibres International,
Inc., a provider of solid waste services to more than 24,000 customers through
eight municipal contracts and one G certificate in north central Washington. The
acquired companies subsequently changed their names to Waste Connections of
Washington, Inc. and Waste Connections International, Inc., respectively. The
two other parties acquired selected BFI solid waste collection and
transportation assets and operations in Idaho, and BFI's recycling assets and
operations in Washington, Idaho and Oklahoma.
 
California Acquisitions. Effective February 1, 1998, the Company acquired the
stock of Madera, an integrated solid waste services company operating in north
central California. In connection with the Madera acquisition, the Company
acquired one franchise agreement and one municipal contract, pursuant to which
it serves more than 9,000 commercial, industrial and residential customers, and
agreements to operate two transfer stations, one Subtitle D landfill and one
recycling facility. On September 9, 1998, the Company acquired certain
collection assets from Youngclaus Enterprises, which "tuck in" to its Madera
operations. On September 22, 1998, Curry Transfer and Recycling, a wholly
 
                                       22
<PAGE>   25
 
   
owned subsidiary of the Company, acquired certain business assets of Harrell's
Septic Service, which provides portable toilet and septic services in
northwestern California and southwestern Oregon (see "Oregon Acquisitions"
below). On December 30, 1998, the Company acquired the stock of Amador Disposal
Service, Inc. and Mother Lode Sani-Hut, Inc., which provide solid waste
collection, recycling and disposal services to approximately 11,000 customers in
north central California.
    
 
Idaho Acquisitions. On January 30, 1998, the Company acquired the stock of Waste
Connections of Idaho, Inc., which provides solid waste collection services to
more than 10,000 customers in eastern Idaho through subscription agreements with
residential customers and seven municipal contracts. Waste Connections of Idaho,
Inc., was formed in September 1997 by affiliates of the Company for the purpose
of acquiring certain assets of Browning-Ferris Industries of Idaho, Inc.
Effective March 1, 1998, the Company acquired certain solid waste collection
assets from Hunter Enterprises, Inc., a solid waste services company located in
eastern Idaho. These assets "tuck in" to the Company's Idaho operations and
serve approximately 2,800 residential and commercial customers. On October 15,
1998, the Company acquired the stock of R&N, LLC, which provides solid waste
collection and transportation services to approximately 4,300 customers in
southwestern Idaho.
 
   
Kansas Acquisition. On December 21, 1998, a wholly owned subsidiary of the
Company acquired the assets of Heartland Waste Management, Inc., which provides
solid waste collection services to approximately 2,500 customers in southern
Kansas. These assets "tuck in" to the Company's western Oklahoma operations.
    
 
Nebraska Acquisitions. On July 31, 1998, a wholly owned subsidiary of the
Company merged into Shrader, which provides solid waste and recyclables
collection services to more than 22,500 customers in eastern Nebraska. On August
3, 1998, the Company acquired the stock of J&J Sanitation, Inc. and Big Red Roll
Off, Inc. (together, "J&J"), which together serve more than 9,500 customers in
eastern Nebraska. On September 18, 1998, Waste Connections of Nebraska, Inc., a
wholly owned subsidiary of the Company, acquired substantially all the assets of
Affiliated Waste Services, L.L.C., which provides solid waste collection and
transportation services to approximately 4,700 customers in eastern Nebraska. On
the same date, Waste Connections of Nebraska, Inc. acquired substantially all of
the assets of Wolff's Trashmasher and Haul It All Sanitary Service, two sole
proprietorships that provide solid waste collection and transportation services
to approximately 1,400 customers in eastern Nebraska.
 
Oklahoma Acquisitions. On June 5, 1998, the Company acquired the stock of B&B
Sanitation, Inc., Red Carpet Landfill, Inc. and Darlin Equipment, Inc.
(together, "B&B"), which together provide solid waste and recyclables collection
and transportation, landfill, and equipment leasing services to more than 2,600
customers in western Oklahoma.
 
Oregon Acquisitions. On June 17, 1998, the Company acquired the stock of Arrow,
which provides solid waste and recyclables collection, transportation and
handling services to more than 2,000 customers in northwestern Oregon and
southwestern Washington. On June 25, 1998, the Company acquired the stock of
Curry Transfer and Recycling, Inc. ("Curry") and certain real estate located in
Curry County, Oregon and used in that business. Curry provides solid waste and
recyclables collection and transportation services to more than 5,400 customers
in southwestern Oregon. On September 25, 1998, Curry acquired certain business
assets of Westlane Disposal, which provides solid waste collection and
transportation services to approximately 2,200 customers in southwestern Oregon.
On
 
                                       23
<PAGE>   26
 
November 5, 1998, the Company acquired the stock of Siuslaw Disposal, Inc.,
which provides solid waste collection services to approximately 1,800 customers
in southwestern Oregon. On November 12, 1998, Curry acquired certain business
assets of Veneta Garbage Service, which provides solid waste collection services
to approximately 1,800 customers in southwestern Oregon. On November 13, 1998,
Curry acquired certain assets of B&G Sanitation, which provides solid waste
collection services to approximately 1,000 customers in southwestern Oregon. On
November 23, 1998, the Company acquired the stock of Columbia Sanitary Services,
Inc. and Moreland Sanitary Service, Inc., which provide solid waste collection
services to an aggregate of approximately 4,800 customers in northwestern Oregon
and southwestern Washington.
 
Utah Acquisitions. On June 1, 1998, the Company acquired substantially all of
the business assets of Contractor's Waste Removal, L.C. ("Contractor's"), a
provider of solid waste collection and transportation services to more than 450
customers in central Utah. On July 27, August 10 and August 21, 1998, the
Company acquired certain business assets of Miller Containers, Inc., ABC Waste,
Inc., and Contractors Waste, Inc., respectively, which together provide solid
waste collection services to approximately 290 customers in central Utah and
"tuck in" to the Company's Utah operations. On September 21, 1998, Waste
Connections of Utah, Inc., a wholly owned subsidiary of the Company, acquired
certain assets of Country Garbage Services, Inc., which provides solid waste
collection and transportation services in central Utah. On December 30, 1998,
the Company acquired the stock of City Sanitation, Inc., which provides solid
waste collection services to more than 4,200 customers in central Utah.
 
   
Wyoming and South Dakota Acquisitions. On April 8, 1998, the Company acquired
certain solid waste collection assets from A-1 Disposal, Inc. and Jesse's
Disposal, both unrelated parties operating in northeastern Wyoming, and together
serving approximately 2,300 customers. On May 11, 1998, the Company acquired T&T
Disposal, Inc., a provider of solid waste and recyclables collection services to
more than 500 customers in northeastern Wyoming. On May 8, 1998, the Company
acquired Sowers' Sanitation, Inc. and Sunshine Sanitation Incorporated,
providers of solid waste and recyclables collection services to an aggregate of
more than 7,000 customers in western South Dakota. On August 3, 1998, the
Company acquired certain assets of a South Dakota waste collection business
owned by the shareholders of J&J, which "tucks in" to the Company's Wyoming and
South Dakota operations. (See "Nebraska Acquisitions" above).
    
 
Washington Acquisitions. On September 21, 1998, a wholly owned subsidiary of the
Company merged into Evergreen Waste Systems, Inc. As a result of this merger,
Evergreen Waste Systems, Inc. became a wholly owned subsidiary of the Company
that provides solid waste and recyclables collection and transportation services
to more than 6,500 customers in southwestern Washington and northwestern Oregon.
 
In addition, on October 22, 1998, the Company and the Murrey Companies entered
into a merger agreement under which the Murrey Companies would become wholly
owned subsidiaries of the Company. The Murrey Companies, with approximately $35
million in annual revenue, provide solid waste services to more than 65,000
customers in the Seattle-Tacoma, Washington area. The merger is subject to
several conditions, including the approval of the Company's stockholders. If
these conditions are satisfied, the Company expects to consummate the merger in
January 1999.
 
On December 11, 1998, the Company entered into an agreement to purchase the
stock of Butler County Landfill, Inc. and certain assets of Kobus Construction,
Inc., which provide
 
                                       24
<PAGE>   27
 
solid waste disposal and transportation services to approximately 300 customers
in eastern Nebraska. The acquisition in contingent on satisfaction of several
conditions. If these conditions are satisfied, the Company expects the
acquisition to be consummated in January 1999.
 
The Company's management does not believe that consummation of any acquisitions
other than the Butler County/Kobus and Murrey's transactions is probable as of
the date of this prospectus.
 
GENERAL
 
The Company's revenues consist mainly of fees it charges customers for solid
waste collection, transfer, disposal and recycling services. A large part of the
Company's collection revenues come from commercial, industrial and residential
services. The Company frequently performs these services under service
agreements or franchise agreements with counties or municipal contracts. County
franchise agreements and municipal contracts generally last from one to ten
years. The Company's existing franchise agreement and all of its existing
municipal contracts give the Company the exclusive right to provide specified
waste services in the specified territory during the contract term. These
exclusive arrangements are awarded, at least initially, on a competitive bid
basis and subsequently on a bid or negotiated basis. The Company also provides
residential collection services on a subscription basis with individual
households. The Company provides a large part of its collection services in
Washington under G certificates awarded by the Washington Utilities and
Transportation Commission. G certificates grant the Company collection rights in
certain areas, which rights are generally perpetual and exclusive. See
"Business -- G Certificates." Contracts with counties and municipalities and G
certificates provide relatively consistent cash flow during the term of the
contracts. Because the Company bills most residential customers on a
subscription basis quarterly, subscription agreements also are a stable source
of revenues for the Company. The Company's collection business also generates
revenues from the sale of recyclable commodities.
 
The Company charges transfer station and landfill customers a tipping fee on a
per ton basis for disposing of their solid waste at the transfer stations and
disposal facility the Company operates in Madera, California and the landfill
the Company owns and operates in Major County, Oklahoma. Most of the Company's
transfer and landfill customers are under one to ten year disposal contracts,
most of which provide for annual cost of living increases.
 
The Company typically determines the prices for its solid waste services by the
collection frequency and level of service, route density, volume, weight and
type of waste collected, type of equipment and containers furnished, the
distance to the disposal or processing facility, the cost of disposal or
processing, and prices charged by competitors for similar services. The terms of
the Company's contracts sometimes limit its ability to pass on price increases.
Long-term solid waste collection contracts typically contain a formula,
generally based on a published price index, that automatically adjusts fees to
cover increases in some, but not all, operating costs.
 
Costs of operations include labor, fuel, equipment maintenance and tipping fees
paid to third party disposal facilities, worker's compensation and vehicle
insurance, the cost of materials purchased to be recycled, third party
transportation expense, district and state taxes, host community fees and
royalties. The Company owns and/or operates 12 transfer stations, which reduce
the Company's costs by allowing it to use collection personnel and
 
                                       25
<PAGE>   28
 
equipment more fully and by consolidating waste to gain the more favorable
disposal rates that may be available for larger quantities of waste.
 
Selling, general and administrative ("SG&A") expenses include management,
clerical and administrative compensation and overhead costs associated with the
Company's marketing and sales force, professional services and community
relations expense.
 
Depreciation and amortization expense includes depreciation of fixed assets over
the estimated useful life of the assets using the straight line method and
amortization of goodwill and other intangible assets over the estimated period
of benefit using the straight line method.
 
The Company capitalizes some third party expenditures related to pending
acquisitions or development projects, such as legal and engineering expenses.
The Company expenses indirect acquisition costs, such as executive and corporate
overhead, public relations and other corporate services, as they are incurred.
The Company charges against net income any unamortized capitalized expenditures
and advances (net of any portion that the Company believes it may recover,
through sale or otherwise) that relate to any operation that is permanently shut
down and any pending acquisition or landfill development project that is not
completed. The Company routinely evaluates all capitalized costs, and expenses
those related to projects that the Company believes are not likely to succeed.
As of September 30, 1998, the Company had no capitalized expenditures relating
to landfill development projects and $32,610 in capitalized expenditures
relating to acquisitions and pending acquisitions.
 
The Company accrues for estimated landfill closure and post-closure maintenance
costs at the Red Carpet Landfill it owns in Major County, Oklahoma. Under
applicable regulations, the Company and Madera County, as operator and owner,
respectively, are jointly liable for closure and post-closure liabilities with
respect to the Fairmead landfill. The Company has not accrued for such
liabilities because Madera County, as required by state law, has established a
special fund, into which it deposits a portion of tipping fee surcharges, to pay
such liabilities. Consequently, management of the Company does not believe
Madera had any financial obligation for closure and post-closure costs for the
Fairmead Landfill as of June 30, 1998. The Company will have additional material
financial obligations relating to closure and post-closure costs of any disposal
facilities it may own or operate in the future. In such case, the Company will
accrue for those obligations, based on engineering estimates of consumption of
permitted landfill airspace over the useful life of any such landfill.
 
BASIS OF PRESENTATION
 
The entities the Company acquired in September 1997 from BFI are collectively
called the Company's predecessors. BFI acquired the predecessors at various
times during 1995 and 1996. Before being acquired by BFI, the predecessors
operated as separate stand-alone businesses.
 
During the periods in which the Company's predecessors operated as wholly owned
subsidiaries of BFI, they maintained intercompany accounts with BFI for
recording intercompany charges for costs and expenses, intercompany purchases of
equipment and additions under capital leases and intercompany transfers of cash,
among other transactions. It is not feasible to ascertain the amount of related
interest expense that would have been recorded in the historical financial
statements had the predecessors been operated as stand-alone entities. BFI
allocated charges for interest expense to the
 
                                       26
<PAGE>   29
 
Company's predecessors as disclosed in the statement of operations data. The
interest expense allocations from BFI are based on formulas that may not
correspond to the balances in the related intercompany accounts. Moreover, the
financial position and results of operations of the predecessors during this
period may not indicate the financial position or results of operations that
would have been realized had the predecessors been operated as stand-alone
entities. For the periods in which the predecessors operated as wholly owned
subsidiaries of BFI, the statements of operations include amounts allocated by
BFI to the predecessors for selling, general and administrative expenses based
on certain allocation methodologies which the Company's management believes are
reasonable.
 
During the periods before they were acquired by BFI, the Company's predecessors
operated as separate stand-alone businesses. BFI accounted for the acquisitions
of the predecessors using the purchase method of accounting and allocated the
respective purchase prices to the fair values of the assets acquired and
liabilities assumed. Similarly, the Company accounted for its acquisitions of
the predecessors from BFI in September 1997 using the purchase method of
accounting and allocated the purchase price to the fair value of the assets
acquired and liabilities assumed. Consequently, the amounts of depreciation and
amortization included in the statements of operations for the periods presented
reflect the changes in basis of the underlying assets that resulted from changes
in ownership that occurred during those periods. In addition, because the
predecessors operated independently and were not under common control or
management during these periods, and because different tax strategies may have
influenced their operating results, the data may not be comparable to or
indicative of their operating results after their acquisition by BFI.
 
RESULTS OF OPERATIONS
 
The financial information for the Company and its predecessors included in this
section and in the audited financial statements included elsewhere in this
Prospectus relates to the following entities for the periods indicated:
 
<TABLE>
<S>                                            <C>
YEAR ENDED DECEMBER 31, 1995:
The Disposal Group Combined                    Year ended December 31, 1995
Fibres International, Inc.                     January 1, 1995 through November 30, 1995
                                               (BFI acquisition date)
Predecessors                                   One month ended December 31, 1995
                                               (represents the results of operations of
                                               Fibres International, Inc. subsequent to
                                               the BFI acquisition date)
 
YEAR ENDED DECEMBER 31, 1996:
The Disposal Group Combined                    January 1, 1996 through July 31, 1996 (BFI
                                               acquisition date)
Predecessors Combined                          Period ended December 31, 1996 (represents
                                               the combined results of operations of The
                                               Disposal Group subsequent to the BFI
                                               acquisition date and the operations for
                                               the year ended December 31, 1996 of Fibres
                                               International, Inc., which was acquired by
                                               BFI in 1995)
</TABLE>
 
                                       27
<PAGE>   30
<TABLE>
<S>                                            <C>
YEAR ENDED DECEMBER 31, 1997:
 
Predecessors Combined                          Nine months ended September 30, 1997
                                               (represents the combined results of
                                               operations for the nine month period of
                                               the entities acquired by BFI in 1995 and
                                               1996 described above)
 
Waste Connections, Inc.                        Period from inception (September 9, 1997)
                                               through December 31, 1997
</TABLE>
 
The Disposal Group Combined consists of three entities that were under common
control before their acquisition by BFI: Diamond Fab and Welding Service, Inc.,
Buchmann Sanitary Service, Inc., and The Disposal Group.
 
Because the predecessors existed for different periods, year-to-year comparisons
are not meaningful and therefore the Company has not included discussions of
SG&A, depreciation and amortization and interest expense in this Prospectus.
 
WASTE CONNECTIONS, INC. -- NINE MONTHS ENDED SEPTEMBER 30, 1998 VS. PREDECESSORS
COMBINED -- NINE MONTHS ENDED SEPTEMBER 30, 1997
 
Revenue. Revenues for the nine months ended September 30, 1998 increased $17.2
million, or 95.1%, to $35.3 million from $18.1 million for the nine months ended
September 30, 1997. The increase was primarily attributable to the inclusion of
the acquisitions closed since the beginning of 1998 ($16.2 million) and growth
in the base business ($964,000).
 
Cost of Operations. Cost of operations for the nine months ended September 30,
1998 increased $9.3 million, or 62.7%, to $24.0 million in 1998 from $14.8
million for the nine months ended September 30, 1997. The increase was primarily
attributable to acquisitions closed since the beginning of 1998 and a decline in
expenses in the core business as a result of cost reduction measures.
 
1997 VS. 1996
 
Revenue. The Company's total revenue for 1997 was $6.2 million. The total
revenue was attributable to the purchase of the Company's predecessors on
September 30, 1997. Revenues related to the Company's Predecessors Combined for
the nine months ended September 30, 1997 were $18.1 million. The Company's
Predecessors Combined for the period ended December 31, 1996 had revenues of
$13.4 million. The Disposal Group Combined had revenues of $8.7 million for the
period from January 1, 1996 to July 31, 1996. The monthly revenue run rate for
the Company and the Company's Predecessors Combined was essentially the same in
1997 and 1996.
 
Cost of Operations. The Company's total cost of operations in 1997 was $4.7
million, or 75.4% of revenue. The total cost of operations was attributable to
the purchase of the Company's predecessors on September 30, 1997. Cost of
operations of the Company's Predecessors Combined for the nine months ended
September 30, 1997 was $14.8 million, or 81.4% of revenue. The Company's
Predecessors Combined for the period ended December 31, 1996 had cost of
operations of $11.4 million, or 85.1% of revenue. The Disposal Group during the
period from January 1, 1996 to July 31, 1996 had cost of
                                       28
<PAGE>   31
 
operations of $6.2 million, or 70.7% of revenue. The Company's cost of
operations as a percentage of revenue in 1997 declined from the Company's
Predecessors Combined cost of operations as a percentage of revenues in 1997 and
1996, due to price increases in the fourth quarter of 1997 and operating cost
savings in lease expense, environmental accrual fee allocations from BFI,
franchise fees and amortization of loss contract accrual. The Company's
Predecessors Combined cost of operations as a percentage of revenue for the nine
months ended September 30, 1997 declined from 1996 due to the rollover effect of
the acquisition of The Disposal Group in 1996, which had generally higher
margins than the existing businesses.
 
1996 VS. 1995
 
Revenue. The Company's Predecessors Combined total revenue for 1996 was $13.4
million. The Disposal Group Combined total revenue for the period from January
1, 1996 to July 31, 1996 was $8.7 million. The Company's Predecessors Combined
had revenues of $595,000 for the period ended December 31, 1995. The Disposal
Group Combined had revenues of $19.7 million for the year ended December 31,
1995. Fibres International, Inc. had revenues of $7.3 million for the period
from January 1, 1995 to November 30, 1995. The monthly revenue run rate for all
of the Company's predecessors declined in 1996 from 1995 because of the
expiration of a municipal contract and a reduction in revenue from sales of
recyclable materials due to a reduction in prices of recyclable materials.
 
Cost of Operations. The Company's Predecessors Combined total cost of operations
for 1996 was $11.4 million, or 85.1% of revenue, and The Disposal Group Combined
cost of operations for the period from January 1, 1996 to July 31, 1996 was $6.2
million, or 70.7% of revenue. Cost of operations of the Company's Predecessors
Combined for the period ended December 31, 1995 was $527,000 or 88.6% of
revenue. Cost of operations of The Disposal Group Combined for the year ended
December 31, 1995 was $16.4 million, or 83.4% of revenue. Cost of operations of
Fibres International, Inc. for the period from January 1, 1995 to November 30,
1995 was $5.7 million, or 77.0% of revenue. Cost of operations as a percentage
of revenue increased because of reductions in prices of recyclable materials in
1996, but that was offset by the expiration of a low margin municipal contract
in 1995.
 
MADERA GENERAL
 
Effective February 1, 1998, the Company acquired Madera, an integrated solid
waste services company operating in north central California, with 1997 revenues
of approximately $7.8 million. In connection with the Madera acquisition, the
Company acquired one franchise agreement and one municipal contract, pursuant to
which it serves more than 9,000 commercial, industrial and residential
customers, and agreements to
 
                                       29
<PAGE>   32
 
operate two transfer stations, one Subtitle D landfill and one recycling
facility. Selected historical financial data for Madera follows (in thousands):
 
<TABLE>
<CAPTION>
                                                       YEARS ENDED DECEMBER 31,
                                                      --------------------------
                                                       1995      1996      1997
                                                      ------    ------    ------
<S>                                                   <C>       <C>       <C>
STATEMENTS OF INCOME DATA:
  Revenues..........................................  $7,008    $7,770    $7,845
  Operating expenses:
     Cost of operations.............................   5,288     5,512     5,289
     Selling, general and administrative............     996       969     1,041
     Depreciation and amortization..................     467       585       627
                                                      ------    ------    ------
     Income from operations.........................     257       704       888
     Interest expense...............................    (237)     (259)     (280)
     Other income, net..............................      68       113       173
                                                      ------    ------    ------
     Net income.....................................  $   88    $  558    $  781
                                                      ======    ======    ======
     Pro forma income taxes(1)......................  $  (30)   $ (208)   $ (295)
                                                      ------    ------    ------
     Pro forma net income(1)........................  $   58    $  350    $  486
                                                      ======    ======    ======
</TABLE>
 
<TABLE>
<CAPTION>
                                                                DECEMBER 31,
                                                              ----------------
                                                               1996      1997
                                                              ------    ------
<S>                                                           <C>       <C>
BALANCE SHEET DATA:
  Cash and equivalents......................................  $1,064    $1,527
  Working capital...........................................     622       942
  Property and equipment, net...............................   3,800     3,636
  Total assets..............................................   6,004     6,297
  Long-term obligations, net of current portion.............   2,194     1,894
  Total shareholders' equity................................   2,264     2,800
</TABLE>
 
- ---------------
(1) Before its acquisition by the Company, Madera operated under Subchapter S of
    the Internal Revenue Code and was not subject to corporate federal and state
    income tax. Madera's Subchapter S election was terminated when the Company
    acquired it.. Had Madera filed federal and state income tax returns as a
    regular corporation for 1995, 1996 and 1997, income tax expense under the
    provisions of Financial Accounting Standards No. 109 would have been $30,
    $208 and $295, respectively. See Note 7 of Notes to Madera's Financial
    Statements included elsewhere in this Prospectus.
 
MADERA 1997 VS. 1996
 
Revenue. Total revenues increased $75,000, or 1.0%, to $7.8 million in 1997 from
$7.8 million in 1996. Exclusive of Madera's Professional Cleaning Division
("PCD"), which ceased operations in July, 1997, revenues increased $667,000, or
9.5%, to $7.7 million in 1997 from $7.0 million in 1996. This increase was
primarily attributable to increased landfill and collection volumes resulting
from existing franchise contracts, partially offset by a reduction in landfill
construction revenues.
 
Cost of Operations. Total cost of operations decreased $223,000 to $5.3 million
in 1997 from $5.5 million in 1996. The decrease was principally due to the
elimination of PCD, which was offset by increased operating cost associated with
increased volumes of waste from existing contracts. Cost of operations as a
percentage of revenues decreased to 67.4%
 
                                       30
<PAGE>   33
 
from 70.9% in 1996. The percentage decrease was primarily due to the elimination
of PCD.
 
SG&A. SG&A expenses increased approximately $72,000 to $1.0 million in 1997 from
$969,000 in 1996. As a percentage of revenues, SG&A increased to 13.3% from
12.5% in 1996.
 
Depreciation and Amortization. Depreciation and amortization expense increased
approximately $42,000 to $627,000 in 1997 from $585,000 in 1996. Depreciation
and amortization increased as a percentage of revenues to 8.0% from 7.5%.
 
Interest Expense. Interest expense increased approximately $21,000 to $280,000
in 1997 from approximately $259,000 in 1996. Interest expense as a percentage of
revenues increased to 3.6% in 1997 from 3.3% in 1996.
 
MADERA 1996 VS. 1995
 
Revenue. Total revenues increased $762,000, or 10.9%, to $7.8 million in 1996
from $7.0 million in 1995. Exclusive of PCD, revenues increased $508,000, or
7.8%, to $7.0 million in 1996 from $6.5 million in 1995. This increase was
primarily attributable to increased landfill and collection volumes resulting
from existing franchise contracts and landfill construction revenues. This was
partially offset by decreased revenue from sales of recyclable materials due to
a decrease in the pricing associated with recyclable materials.
 
Cost of Operations. Total cost of operations increased $224,000 to $5.5 million
in 1996 from $5.3 million in 1995. The principal reason for the increase was the
start up of the PCD. Cost of operations as a percentage of revenues decreased to
70.9% from 75.5% in 1996. The decrease was primarily due to the increased volume
of proportionately higher margin services.
 
SG&A. SG&A expenses decreased approximately $27,000 to $969,000 in 1996 from
$996,000 in 1995. As a percentage of revenues, SG&A decreased to 12.5% from
14.2% in 1996 due to improved economies of scale in the Company's landfill and
collections operations as a result of additional volumes from existing
customers.
 
Depreciation and Amortization. Depreciation and amortization expense increased
approximately $118,000 to $585,000 in 1996 compared to $467,000 in 1995.
Depreciation and amortization increased as a percentage of revenues to 7.5% in
1996 from 6.7% in 1995.
 
Interest Expense. Interest expense increased approximately $22,000 to $259,000
in 1996 from approximately $237,000 in 1995. Interest expense as a percentage of
revenues decreased to 3.3% in 1996 from 3.4% in 1995.
 
LIQUIDITY AND CAPITAL RESOURCES
 
The Company's business is capital intensive. The Company's capital requirements
include acquisitions and fixed asset purchases. The Company expects that in the
future it will also make capital expenditures for landfill cell construction,
landfill development and landfill closure activities. The Company plans to meet
its capital needs through various financing sources, including internally
generated funds and debt and equity financing.
 
As of September 30, 1998, the Company had a working capital deficit of $1.5
million, including cash and cash equivalents of $1.0 million. In managing its
working capital, the Company generally applies the cash generated from its
operations that remains available after satisfying its working capital and
capital expenditure requirements to reduce its indebtedness under its bank
revolving credit facility and to minimize its cash balances. The
 
                                       31
<PAGE>   34
 
Company finances its working capital requirements from internally generated
funds and bank borrowings.
 
At inception, the Company sold 2,300,000 shares of Common Stock at $0.01 per
share to its founders and 2,499,998 shares of Series A Preferred Stock at $2.80
per share. In May and June 1998, the Company received approximately $23.9
million in net proceeds from the sale of 2,300,000 shares in its initial public
offering (including exercise by the underwriters of that offering of their
overallotment option). As of January 4, 1999, the Company had sold or issued an
additional 2,214,292 shares of Common Stock at a weighted average value of
$10.38 per share, and had outstanding options and warrants to purchase 2,442,699
shares of Common Stock at a weighted average exercise price of $4.94 per share.
The weighted average value at which shares were issued, and the weighted average
exercise price of the outstanding options and warrants, are significantly below
the $12.00 initial public offering price per share of Common Stock. The
Company's liquidity and capital resources would be greater if the Company had
sold shares at higher prices and issued options and warrants with higher
exercise prices. In addition, the Company's earnings per share would be higher
if there were fewer shares outstanding. See "Risk Factors -- Subsequent Share
Issuances; Shares Eligible for Future Sale."
 
   
The Company has a $125.0 million revolving credit facility with a syndicate of
banks for which BankBoston, N.A. acts as agent, which is secured by all assets
of the Company, including the Company's interest in the equity securities of its
subsidiaries. The credit facility matures in 2003 and bears interest at a rate
per annum equal to, at the Company's discretion, either: (i) the BankBoston Base
Rate plus applicable margin; or (ii) the Eurodollar Rate plus applicable margin.
The credit facility requires the Company to maintain certain financial ratios
and satisfy other predetermined requirements, such as minimum net worth, net
income and limits on capital expenditures. It also requires the lenders'
approval of acquisitions in certain circumstances. See "Risk
Factors -- Potential Inability to Finance the Company's Potential Growth." As of
December 31, 1998, an aggregate of approximately $57.3 million was outstanding
under the Company's credit facility, and the interest rate on outstanding
borrowings under the current credit facility was approximately 6.7%.
    
 
For the nine months ended September 30, 1998, net cash provided by operations
was approximately $4.4 million, of which $3.5 million was provided by operating
results for the period exclusive of non-cash charges, and $839,000 was provided
by a decrease in working capital (net of acquisitions) for the period.
 
For the nine months ended September 30, 1998, net cash used by investing
activities was $46.1 million. Of this, $44.2 million was used to fund the cash
portion of acquisitions, with the rest invested in management information
systems, trucks and containers.
 
For the nine months ended September 30, 1998, net cash provided by financing
activities was $42.0 million, which included net borrowings under the Company's
debt arrangements and $23.5 million in proceeds from the sale of Common Stock in
an initial public offering.
 
The Company recorded an income tax benefit of $332,000 for the period from
inception (September 9, 1997) through December 31, 1997. The income tax benefit
was recognized because the Company believes it will likely be used when existing
temporary differences reverse.
 
The Company made approximately $5.6 million in capital expenditures in 1998. The
Company expects to make capital expenditures in 1999 of approximately $5.5
million in
 
                                       32
<PAGE>   35
 
connection with its existing business. The Company intends to fund its planned
1999 capital expenditures principally through existing cash, internally
generated funds, and borrowings under its existing credit facility. In addition,
the Company may make substantial additional capital expenditures in acquiring
solid waste collection and disposal businesses. If the Company acquires
additional landfill disposal facilities, the Company may also be required to
make significant expenditures to bring any such newly acquired disposal
facilities into compliance with applicable regulatory requirements, obtain
permits for any such newly acquired disposal facilities or expand the available
disposal capacity at any such newly acquired disposal facilities. The Company
cannot currently determine the amount of these expenditures, because they will
depend on the nature and extent of any acquired landfill disposal facilities,
the condition of any facilities acquired and the permitted status of any
acquired sites. The Company believes that the credit facility, the funds
expected to be generated from operations, and the net proceeds of its initial
public offering will provide adequate cash to fund the Company's working capital
and other cash needs for the foreseeable future.
 
Goodwill represents the excess of the purchase price over the fair value of the
net assets of the acquired entity and is amortized on a straight line basis over
the period of expected benefit of 40 years. Within the purchase price of an
acquired company, the Company first assigns value to the tangible assets,
followed by intangible assets, including covenants not to compete and certain
contracts and customer lists that are determinable both in terms of size and
life. Value of the other intangible assets is determined by considering, among
other things, the present value of the cash flows associated with those assets.
 
The Company continually evaluates the value and future benefits of its
intangible assets. The Company assesses the recoverability from future
operations using income from operations of the related acquired businesses as a
measure. Under this approach, the carrying value would be reduced if it becomes
probable that the Company's best estimate for expected future cash flows of the
related business over the remaining amortization period would be less than the
carrying amount of the intangible assets. As of September 30, 1998, there have
been no adjustments to the carrying amounts of intangibles resulting from these
evaluations. As of September 30, 1998, the Company's goodwill represented
approximately 71% of its total assets and 136% of stockholder's equity.
 
The Company derives a substantial portion of its revenues from exclusive
municipal contracts and franchise agreements. Its single largest contract, with
the City of Vancouver, accounted for approximately 18.1% of the Company's
revenues during the period from inception (September 9, 1997) through December
31, 1997, and 10.1% during the nine months ended September 30, 1998. There are
approximately nine years remaining under that contract. No other single contract
or customer accounted for more than 7.1% of the Company's revenues during the
period from inception (September 9, 1997) through December 31, 1997, or more
than 5.0% during the nine months ended September 30, 1998 or is material to its
liquidity and cash flow.
 
INFLATION
 
To date, inflation has not significant affected the Company's operations.
Consistent with industry practice, many of the Company's contracts allow the
Company to pass through certain costs to the customers, including increases in
landfill tipping fees and, in some cases, fuel costs. Therefore, the Company
believes that it should be able to increase prices to offset many cost increases
that result from inflation. However, competitive pressures
 
                                       33
<PAGE>   36
 
may require the Company to absorb at least part of these cost increases,
particularly during periods of high inflation.
 
SEASONALITY
 
Based on historic trends experienced by the businesses the Company has acquired,
the Company expects its operating results to vary seasonally, with revenues
typically lowest in the first quarter, higher in the second and third quarters
and lower in the fourth quarter than in the second and third quarters. See "Risk
Factors -- Seasonality of Business."
 
YEAR 2000 ISSUES
 
The Company will need to modify or replace portions of its software so that its
computer systems will function properly with respect to dates in the year 2000
("Year 2000") and afterwards. The Company expects to complete those
modifications and upgrades during 1999, at a total cost of approximately
$100,000. The Company has spent part of its Year 2000 budget on replacing its
billing systems in Maltby and Vancouver. Because the Company's operations rely
primarily on mechanical systems such as trucks to collect solid waste, the
Company does not expect its operations to be significantly affected by Year 2000
issues. The Company's customers may need to make Year 2000 modifications to
software and hardware that they use to generate records, bills and payments
relating to the Company. The Company does not rely on vendors on a routine basis
except for providers of disposal services. The Company brings waste to a site
and is normally billed based on tonnage received. The Company believes that if
its disposal vendors encounter Year 2000 problems, they will convert to manual
billing based on scale recordings until they resolve those issues.
 
In assessing the Company's exposure to Year 2000 issues, management believes its
biggest challenges lie in the following areas: Year 2000 issues at the Company's
banks, large (typically municipal) customers, and acquired businesses between
the time the Company acquires them and the time the Company implements its own
systems. The Company is obtaining Year 2000 compliance certifications from its
vendors, banks and customers. If the Company and its vendors, banks and
customers do not complete the required Year 2000 modifications on time, the Year
2000 issue could materially affect the Company's operations. The Company
believes, however, that in the most reasonably likely worst case, the effects of
Year 2000 issues on its operations would be brief and small relative to the
Company's overall operations. The Company has not made a contingency plan to
minimize operational problems if the Company and its vendors, banks and
customers do not timely complete all required Year 2000 modifications.
 
                                       34
<PAGE>   37
 
                                    BUSINESS
 
INTRODUCTION
 
Waste Connections is a regional, integrated solid waste services company that
provides solid waste collection, transfer, disposal and recycling services in
secondary markets of the Western U.S. As of January 4, 1999, the Company served
more than 230,000 commercial, industrial and residential customers in
California, Idaho, Kansas, Nebraska, Oklahoma, Oregon, South Dakota, Utah,
Washington and Wyoming. The Company currently owns and operates 27 collection
operations, seven transfer stations and one Subtitle D landfill and operates an
additional five transfer stations, one Subtitle D landfill and four recycling
facilities.
 
Waste Connections was founded in September 1997 to execute an acquisition-based
growth strategy in secondary markets of the Western U.S. The Company has
acquired 42 solid waste services related businesses since its formation and has
identified more than 300 independent operators of such businesses in the states
where it currently operates, many of which it believes may be suitable for
acquisition by the Company. In addition, the Company is currently assessing
potential acquisitions of solid waste services operations in Colorado, Montana
and Texas.
 
The Company has targeted secondary markets in the Western U.S. because it
believes that: (i) a large number of independent solid waste services companies
suitable for acquisition by the Company are located in these markets; (ii) there
is less competition in these markets from large, well-capitalized solid waste
services companies; and (iii) these markets have strong projected economic and
population growth rates. In addition, the Company's senior management team has
extensive experience acquiring and operating solid waste services businesses in
the Western U.S.
 
INDUSTRY OVERVIEW
 
According to Waste Age, an industry trade publication, the U.S. solid waste
services industry generated estimated revenues of $36.9 billion in 1997. The
solid waste services industry has been significantly consolidated and integrated
since 1990. The Company believes that, particularly in the Western U.S., this
consolidation and integration have been caused primarily by: (i) stringent
environmental regulation and enforcement, resulting in increased capital
requirements for collection companies and landfill operators; (ii) the evolution
of an industry competitive model that emphasizes integrating collection and
disposal capabilities; (iii) the ability of larger integrated operators to
achieve certain economies of scale; and (iv) the existence of a regulatory
framework that allows the acquisition of exclusive, long-term waste collection
rights through franchise agreements, municipal contracts and governmental
certificates.
 
Increased Regulatory Impact. Stringent industry regulations, such as the
Subtitle D regulations, have caused operating and capital costs to rise and have
accelerated consolidation and acquisition activities in the solid waste
collection and disposal industry. Many smaller industry participants have found
these costs difficult to bear and have decided to either close their operations
or sell them to larger operators. In addition, Subtitle D requires more
stringent engineering of solid waste landfills, including liners, leachate
collection and monitoring and gas collection and monitoring. These ongoing costs
are combined with increased financial reserve requirements for solid waste
landfill operators
 
                                       35
<PAGE>   38
 
relating to closure and post-closure monitoring. As a result, the number of
solid waste landfills is declining while the size of solid waste landfills is
increasing.
 
Integrating Collection and Disposal Operations. Competitive pressures are
forcing operators to become more efficient by establishing an integrated network
of solid waste collection operations and transfer stations, through which they
secure solid waste streams for disposal. Operators have adopted a variety of
disposal strategies, including owning landfills, establishing strategic
relationships to secure access to landfills and otherwise capturing significant
waste stream volumes, to gain leverage in negotiating lower landfill fees and
securing long-term, most-favored-pricing contracts with high capacity landfills.
 
Economies of Scale. Larger, integrated operators achieve economies of scale by
vertically integrating their operations. These integrated companies have made
more acquisitions and expanded the breadth of services and density in their
market areas. Control of the waste stream in these market areas, combined with
access to significant financial resources to make acquisitions, has allowed
larger solid waste collection and disposal companies to be more cost-effective
and competitive.
 
Despite the considerable consolidation and integration that has occurred in the
solid waste industry since 1990, the industry remains primarily regional in
nature and highly fragmented. Based on published industry sources, approximately
27% of the total revenues of the U.S. solid waste industry is accounted for by
more than 5,000 private, predominantly small, collection and disposal
businesses, approximately 41% by publicly traded solid waste companies and
approximately 32% by municipal governments that provide collection and disposal
services. The Company expects the current consolidation trends in the solid
waste industry to continue, because many independent landfill and collection
operators lack the capital resources, management skills and technical expertise
necessary to comply with stringent environmental and other governmental
regulations and to compete with larger, more efficient integrated operators. The
Company believes that the fragmented nature of the industry offers significant
consolidation and growth opportunities for companies with disciplined
acquisition programs, decentralized operating strategies and access to financial
resources.
 
Regulatory Framework. In the Western U.S., waste collection services are
provided largely under three types of contractual arrangements: certificates or
permits, franchise agreements and municipal contracts. Certificates or permits,
such as G certificates awarded to waste collection service providers in
unincorporated areas and electing municipalities of Washington by the Washington
Utilities and Transportation Commission, typically grant the certificate holder
the right, which is generally perpetual and exclusive, to provide specific
residential, commercial and industrial waste services in a specified area. See
"G Certificates" below. Franchise agreements typically provide an exclusive
service period of five to ten years or longer and specify the service territory,
a broad range of services to be provided, and rates for the services. They also
often give the service provider a right of first refusal to extend the term of
the agreement. Municipal contracts typically provide a shorter service period
and a more limited scope of services than franchise agreements and generally
require competitive bidding at the end of the contract term. Unless customers
within the areas covered by certain permits or certificates (including G
certificates), franchise agreements and municipal contracts elect not to receive
any waste collection services, they are required to pay collection fees to the
company providing such services in their area.
 
                                       36
<PAGE>   39
 
The Company operates two landfills, of which it owns one, and may acquire or
operate others in the future. The Company believes, however, that in those
secondary markets of the Western U.S. where waste collection services are
provided under exclusive certificates, franchises or contracts, or where waste
disposal is municipally funded or available from multiple sources, controlling
the waste stream by providing collection services under exclusive arrangements
is often more important to a waste services company's growth and profitability
than owning or operating landfills. Several other characteristics of secondary
markets in the Western U.S. limit the economic attractiveness of owning or
operating landfills in those markets. For example, certain state and local
regulations in the Western U.S. restrict the amount of waste that may be
accepted from specific geographic areas. In addition, the relatively expansive
geographic area of many western states increases the cost of interstate and long
haul disposal, which heightens the effects of state and local regulations
limiting the type and origin of waste that may be accepted at a landfill and
makes it more difficult for a landfill to achieve the disposal volume necessary
to operate profitably, given its capital and operating costs. The Company
believes that significant opportunities exist for a well-capitalized company
operating in secondary markets of the Western U.S., and that the highly
fragmented nature of this industry should allow the Company to consolidate
existing solid waste services businesses in this region.
 
STRATEGY
 
The Company's objective is to build a leading integrated solid waste services
company in secondary markets of the Western U.S. The Company's strategy for
achieving this objective is to: (i) acquire collection, transfer, disposal and
recycling operations in new markets and through "tuck-in" acquisitions in
existing markets; (ii) secure additional franchises, municipal contracts and
governmental certificates; (iii) generate internal growth in existing markets by
increasing market penetration and adding services to its existing operations;
and (iv) enhance profitability by increasing operating efficiencies of existing
and acquired operations. The Company's ability to implement this strategy is
enhanced by the experience of the members of its senior management team and
their knowledge of and reputation in the solid waste services industry in the
Company's targeted markets. The Company intends to implement its strategy as
follows:
 
EXPANSION THROUGH ACQUISITIONS
 
The Company intends to expand significantly the scope of its operations by: (i)
acquiring solid waste collection, transfer, disposal and recycling operations in
new markets; and (ii) acquiring solid waste collection, transfer, disposal and
recycling operations in existing and adjacent markets through "tuck-in"
acquisitions.
 
The Company intends to follow a regional expansion strategy by entering new
markets through acquisitions. An initial acquisition in a new market is used as
an operating base for the Company in that area. The Company then seeks to
strengthen the acquired operation's presence in that market by providing
additional services, adding new customers and making tuck-in acquisitions.
 
The Company can then broaden its regional presence by adding additional
operations in markets adjacent to the new location. The Company is currently
examining opportunities to expand its presence in the Western U.S. in states
other than California, Idaho, Kansas, Nebraska, Oklahoma, Oregon, South Dakota,
Utah, Washington and Wyoming and is
 
                                       37
<PAGE>   40
 
assessing potential acquisitions of solid waste services operations in Colorado,
Montana and Texas.
 
The Company believes that numerous "tuck-in" acquisition opportunities exist
within its current and targeted market areas. For example, the Company has
identified more than 300 independent entities that provide collection and
disposal services in the states where it currently operates. The Company
believes that throughout the Western U.S., many independent entities are
suitable for acquisition by the Company and would provide the Company
opportunities to increase market share and route density.
 
FRANCHISE AGREEMENTS, MUNICIPAL CONTRACTS AND GOVERNMENTAL CERTIFICATES
 
The Company intends to devote significant resources to securing additional
franchise agreements and municipal contracts through competitive bidding and
additional governmental certificates through the acquisition of other companies.
In bidding for franchises and municipal contracts and evaluating the acquisition
of companies holding governmental certificates, the Company's management team
draws on its experience in the waste industry and its knowledge of local service
areas in existing and target markets. The Company's district managers manage
relationships with local governmental officials within their respective service
areas, and sales representatives may be assigned to cover specific
municipalities. These personnel focus on maintaining, renewing and renegotiating
existing franchise agreements and municipal contracts and on securing additional
agreements, contracts and governmental certificates.
 
INTERNAL GROWTH
 
To generate continued internal growth, the Company will focus on increasing
market penetration in its current and adjacent markets, soliciting new
commercial, industrial, and residential customers in markets where such
customers may elect whether or not to receive waste collection services,
marketing upgraded or additional services (such as compaction or automated
collection) to existing customers and, where appropriate, raising prices. Where
possible, the Company intends to leverage its franchise-based platforms to
expand its customer base beyond its exclusive market territories. As customers
are added in existing markets, the Company's revenue per routed truck increases,
which generally increases the Company's collection efficiencies and
profitability. In markets in which it has exclusive contracts, franchises and
certificates, the Company expects internal growth to at least track population
and business growth.
 
The Company expects to use transfer stations as an important part of its
internal growth strategy, by extending the direct-haul reach of the Company and
linking disparate collection operations with Company-owned, operated or
contracted disposal capacity. The Company currently owns and/or operates 12
transfer stations. By operating transfer stations, the Company also engages in
direct communications with municipalities and private operators that deliver
waste to its transfer stations. This better positions the Company to gain
additional business in its markets if any municipality privatizes its solid
waste operations or rebids existing contracts, and it increases the Company's
opportunities to acquire private collection operations.
 
                                       38
<PAGE>   41
 
OPERATING ENHANCEMENTS
 
The Company has developed company-wide operating standards, which are tailored
for each of its markets based on industry standards and local conditions. Using
these standards, the Company tracks collection and disposal routing efficiency
and equipment utilization. It also implements cost controls and employee
training and safety procedures, and establishes a sales and marketing plan for
each market. The Company has installed a wide area network, implemented advanced
management information systems and financial controls, and consolidated
accounting, insurance and employee benefit functions, customer service,
productivity reporting and dispatching systems. The Company believes that by
establishing operating standards, closely monitoring performance and
streamlining certain administrative functions, it can improve the profitability
of existing operations.
 
To improve an acquired business' operational productivity, administrative
efficiency and profitability, the Company applies the same operating standards,
information systems and financial controls to acquired businesses as the
Company's existing operations employ. Moreover, if the Company is able to
internalize the waste stream of acquired operations, it can further increase
operating efficiencies and improve capital utilization. Where not restricted by
exclusive agreements, contracts, permits or certificates, the Company also
solicits new commercial, industrial and residential customers in areas within
and surrounding the markets served by acquired collection operations, to further
improve operating efficiencies and increase the volume of solid waste collected
by the acquired operations.
 
ACQUISITION PROGRAM
 
The Company currently operates in California, Idaho, Kansas, Nebraska, Oklahoma,
Oregon, South Dakota, Utah, Washington and Wyoming and believes that these and
other markets in the Western U.S. with similar characteristics offer significant
opportunities for achieving its objective. The Company focuses on markets that
are generally characterized by: (i) a geographically dispersed population, which
the Company believes deters competition from larger, established waste
management companies; (ii) a potential revenue base of at least $15 million;
(iii) the opportunity for the Company to acquire a significant market share;
(iv) the availability of adequate disposal capacity, either through acquisition
by the Company or through agreements with third parties; (v) a favorable
regulatory environment; or (vi) strong projected economic or population growth
rates. The Company believes that these market characteristics provide
significant growth opportunities for a well-capitalized market entrant and
create economic and operational barriers to entry by new competitors.
 
The Company believes that its experienced management, decentralized operating
strategy, financial strength and size make it an attractive buyer to certain
solid waste collection and disposal acquisition candidates. The Company has
developed a set of financial, geographic and management criteria to help
management evaluate acquisition candidates. These criteria evaluate a variety of
factors, including, but not limited to: (i) the candidate's historical and
projected financial performance; (ii) the candidate's internal rate of return,
return on assets and return on revenue; (iii) the experience and reputation of
the candidate's management and customer service providers, their relationships
with local communities and their willingness to continue as employees of the
Company; (iv) the composition and size of the candidate's customer base and
whether the customer base is served under franchise agreements, municipal
contracts, governmental certificates or other
                                       39
<PAGE>   42
 
exclusive arrangements; (v) whether the geographic location of the candidate
will enhance or expand the Company's market area or ability to attract other
acquisition candidates; (vi) whether the acquisition will increase the Company's
market share or help protect the Company's existing customer base; (vii) any
potential synergies that may be gained by combining the candidate with the
Company's existing operations; and (viii) the liabilities of the candidate.
 
Before completing an acquisition, the Company performs extensive environmental,
operational, engineering, legal, human resources and financial due diligence.
All acquisitions must be evaluated and approved by the Company's management.
Ronald J. Mittelstaedt is authorized to approve acquisitions with consideration
of up to $1.0 million; the Executive Committee of the Board of Directors must
approve all other acquisitions. The Company seeks to integrate each acquired
business promptly and to minimize disruption to the ongoing operations of both
the Company and the acquired business, and generally attempts to retain the
senior management of acquired businesses. The Company believes its senior
management team has a proven track record in integrating acquisitions.
 
The following table sets forth the Company's acquisitions completed from its
inception in September 1997 through January 4, 1999:
 
<TABLE>
<CAPTION>
       ACQUIRED BUSINESS         MONTH ACQUIRED   PRINCIPAL BUSINESS        LOCATION             MARKET AREA
       -----------------         --------------   ------------------        --------             -----------
<S>                              <C>              <C>                  <C>                 <C>
City Sanitation, Inc.            December 1998    Collection           Layton, UT          Central Utah
Amador Disposal Service, Inc.    December 1998    Collection           Ione, CA            North Central California
and Mother Lode Sani-Hut, Inc.
Heartland Waste Management,      December 1998    Collection           Arkansas City, KA   Southern Kansas
Inc.
Columbia Sanitary Services,      November 1998    Collection           Portland, OR        Northern Oregon and
Inc. and Moreland Sanitary                                                                 Southwestern Washington
Services, Inc.
B&G Sanitation                   November 1998    Collection           Cottage Grove, OR   Southwestern Oregon
Veneta Garbage Service           November 1998    Collection           Veneta, OR          Southwestern Oregon
Siuslaw Disposal, Inc.           November 1998    Collection           Florence, OR        Southwestern Oregon
R&N, LLC                         October 1998     Collection           Mountain Home, ID   Southwestern Idaho
Westlane Disposal                September 1998   Collection           Florence, OR        Southwestern Oregon
Harrell's Septic Service         September 1998   Septic Services      Crescent City, CA   Northwestern California
                                                                                           and Southwestern Oregon
Evergreen Waste Systems, Inc.    September 1998   Collection           Washougal, WA       Southwestern Washington
                                                                                           and Northwestern Oregon
Wolff's Trashmasher and Haul It  September 1998   Collection           Stanton, NE         Eastern Nebraska
All Sanitary Service
Country Garbage Services, Inc.   September 1998   Collection           Salt Lake City, UT  Central Utah
Youngclaus Enterprises           September 1998   Collection           Madera, CA          North Central California
Affiliated Waste LLC             September 1998   Collection           Norfolk, NE         Eastern Nebraska
J&J Sanitation, Inc.             August 1998      Collection           O'Neill, NE         Eastern Nebraska
Contractors Waste, Inc.          August 1998      Collection           Salt Lake City, UT  Central Utah
Big Red Roll Off, Inc.           August 1998      Collection           O'Neill, NE         Eastern Nebraska
ABC Waste, Inc.                  August 1998      Collection           Salt Lake City, UT  Central Utah
Miller Containers, Inc.          July 1998        Collection           Salt Lake City, UT  Central Utah
Shrader Refuse and Recycling     July 1998        Collection           Papillion, NE       Eastern Nebraska
Service Company
Red Carpet Landfill, Inc.        June 1998        Landfill             Enid, OK            Western Oklahoma
B&B Sanitation, Inc.             June 1998        Collection           Enid, OK            Western Oklahoma
</TABLE>
 
                                       40
<PAGE>   43
 
<TABLE>
<CAPTION>
       ACQUIRED BUSINESS         MONTH ACQUIRED   PRINCIPAL BUSINESS        LOCATION             MARKET AREA
       -----------------         --------------   ------------------        --------             -----------
<S>                              <C>              <C>                  <C>                 <C>
Darlin Equipment, Inc.           June 1998        Equipment leasing    Enid, OK            Western Oklahoma
Oregon Waste Technology          June 1998        Collection           Brookings, OR       Southwestern Oregon
Curry Transfer and Recycling     June 1998        Collection           Brookings, OR       Southwestern Oregon
Contractors' Waste Removal, L.C  June 1998        Collection           Orem, UT            Central Utah
Arrow Sanitary Services, Inc.    June 1998        Collection           Portland, OR        Northwestern Oregon and
                                                                                           Southwestern Washington
T&T Disposal, Inc.               May 1998         Collection           Gillette, WY        Northeastern Wyoming
Sunshine Sanitation              May 1998         Collection           Spearfish, SD       Western South Dakota
Incorporated
Sower's Sanitation, Inc.         May 1998         Collection           Belle Fourche, SD   Western South Dakota
Jesse's Disposal                 April 1998       Collection           Gillette, WY        Northeastern Wyoming
A-1 Disposal, Inc.               April 1998       Collection           Gillette, WY        Northeastern Wyoming
Hunter Enterprises, Inc.         March 1998       Collection           Shelley, ID         Eastern Idaho
Madera Disposal Services Inc.    February 1998    Collection and       Madera, CA          North Central California
                                                  Landfill
Waste Connections of Idaho,      January 1998     Collection           Idaho Falls, ID     Eastern Idaho
Inc.
Fibres International, Inc.       September 1997   Collection           Issaquah, WA        North Central Washington
                                                                                           and Central Oregon
Browning-Ferris Industries of    September 1997   Collection           Clark County, WA    Southwestern Washington
Washington, Inc.
</TABLE>
 
SERVICES
 
COMMERCIAL, INDUSTRIAL AND RESIDENTIAL WASTE SERVICES
 
The Company serves more than 230,000 commercial, industrial and residential
customers. Of these, the Company serves more than 49,000 under G certificates
that grant the Company rights, which are generally perpetual and exclusive, to
provide services within specified areas, more than 26,500 under exclusive
franchise agreements with remaining terms ranging from seven to 18 years, and
more than 98,700 under exclusive municipal contracts with generally shorter
contract terms.
 
The Company's commercial and industrial services that are not performed under G
certificates, franchise agreements or municipal contracts are provided under one
to five year service agreements. Fees under these agreements are determined by
such factors as collection frequency, level of service, route density, the type,
volume and weight of the waste collected, type of equipment and containers
furnished, the distance to the disposal or processing facility, the cost of
disposal or processing and prices charged in its markets for similar service.
Collection of larger volumes associated with commercial and industrial waste
streams generally helps improve the Company's operating efficiencies, and
consolidation of these volumes allows the Company to negotiate more favorable
disposal prices. The Company's commercial and industrial customers use portable
containers for storage, enabling the Company to service many customers with
fewer collection vehicles. Commercial and industrial collection vehicles
normally require one operator. The Company provides one to eight cubic yard
containers to commercial customers, 10 to 50 cubic yard containers to industrial
customers, and 30 to 95 gallon carts to residential customers. For an additional
fee, the Company installs stationary compactors that compact waste prior to
collection on the premises of a substantial number of large volume customers.
 
                                       41
<PAGE>   44
 
The Company's residential waste services that are not performed under G
certificates, franchise agreements or municipal contracts are provided under
contracts with homeowners' associations, apartment owners or mobile home park
operators, or on a subscription basis with individual households. Residential
contract fees are based primarily on route density, the frequency and level of
service, the distance to the disposal or processing facility, the cost of
disposal or processing and prices charged in that market for similar services.
Collection fees are paid either by the municipalities from tax revenues or
directly by the residents receiving the services.
 
TRANSFER STATION SERVICES
 
The Company has an active program to acquire, develop, own and operate transfer
stations in markets proximate to its operations. Currently, the Company operates
three transfer stations in California, two transfer stations in Nebraska, one
transfer station in Washington and six transfer stations in Oregon, which
receive, compact, and transfer solid waste to be transported by larger vehicles
to landfills. The Company believes that the transfer stations benefit the
Company by: (i) concentrating the waste stream from a wider area, which
increases the volume of disposal at Company-operated landfills and gives the
Company greater leverage in negotiating for more favorable disposal rates at
other landfills; (ii) improving utilization of collections personnel and
equipment; and (iii) building relationships with municipalities and private
operators that deliver waste, which can lead to additional growth opportunities.
 
LANDFILLS
 
The Company operates two Subtitle D landfills, the Fairmead Landfill and the Red
Carpet Landfill, and owns the Red Carpet Landfill. The Company operates the
Fairmead Landfill under an operating agreement with Madera County with a
remaining term of 11 years. As of January 4, 1999, the Fairmead Landfill
consisted of 160 total acres, of which 20 acres were permitted for disposal. As
of that date, the Fairmead Landfill had approximately 550,000 tons of unused
permitted capacity remaining, with approximately 3.5 million additional tons of
capacity in various stages of permitting, and was estimated to have a remaining
life of 26 years. The Fairmead Landfill is currently permitted to accept up to
395 tons per day of municipal solid waste.
 
As of January 4, 1999, the Red Carpet Landfill consisted of 82 total acres, of
which 40 acres were permitted for disposal. As of that date, the Red Carpet
Landfill had approximately 625,000 tons of unused permitted capacity remaining,
with approximately 1.7 million additional tons of capacity in various stages of
permitting, and was estimated to have a remaining life of 40 years. The Red
Carpet Landfill is currently permitted to accept up to 350 tons per day of
municipal solid waste.
 
The Company monitors the available permitted in-place disposal capacity of the
Fairmead and Red Carpet Landfills on an ongoing basis and evaluates whether to
seek to expand this capacity. In making this evaluation, the Company considers
various factors, including the volume of waste projected to be disposed of at
the landfill, the size of the unpermitted acreage included in the landfill, the
likelihood that the Company will be successful in obtaining the necessary
approvals and permits required for the expansion and the costs that would be
involved in developing the additional capacity. The Company also regularly
considers whether it is advisable, in light of changing market conditions and/or
regulatory
 
                                       42
<PAGE>   45
 
requirements, to seek to expand or change the permitted waste streams or to seek
other permit modifications.
 
The Company seeks to identify solid waste landfill acquisition candidates to
achieve vertical integration in markets where the economic and regulatory
environment makes such acquisitions attractive. The Company believes that in
some markets, acquiring landfills would provide opportunities to vertically
integrate its collection, transfer and disposal operations while improving
operating margins. The Company evaluates landfill candidates by determining,
among other things, the amount of waste that could be diverted to the landfill
in question, whether access to the landfill is economically feasible from the
Company's existing market areas either directly or through transfer stations,
the expected life of the landfill, the potential for expanding the landfill, and
current disposal costs compared to the cost of acquiring the landfill. Where the
acquisition of a landfill is not attractive, the Company pursues long term
disposal contracts with facilities located in proximity to its markets.
 
RECYCLING AND OTHER SERVICES
 
The Company offers municipal, commercial, industrial and residential customers
recycling services for a variety of recyclable materials, including cardboard,
office paper, plastic containers, glass bottles and ferrous and aluminum metals.
The Company operates four recycling processing facilities and sells other
collected recyclable materials to third parties for processing before resale.
The profits from the Company's resale of recycled materials are often shared
between the Company and the other parties to its recycling contracts. For
example, certain of the Company's municipal recycling contracts in Washington
and Idaho, which were negotiated before the Company acquired those businesses,
specify certain benchmark resale prices for recycled commodities. To the extent
the prices the Company actually receives for the processed recycled commodities
collected under the contract exceed the prices specified in the contract, the
Company shares the excess with the municipality, after recovering any previous
shortfalls resulting from actual market prices falling below the prices
specified in the contract. In an effort to reduce its exposure to commodity
price risk with respect to recycled materials, the Company has adopted a pricing
strategy of charging collection and processing fees for recycling volume
collected from third parties. The Company believes that recycling will continue
to be an important component of local and state solid waste management plans,
due to the public's increasing environmental awareness and expanding regulations
that mandate or encourage recycling.
 
The Company also provides other waste management services, most of which are
project-based, including transporting and disposing of non-hazardous
contaminated soils and similar materials, transporting special waste products,
including asbestos, and arranging for the transportation of construction and
demolition waste and disposal of soil and special waste products and providing
portable toilet and septic pumping services.
 
OPERATIONS
 
The Company is managed on a decentralized basis. This places decision-making
authority close to the customer, enabling the Company to identify customers'
needs quickly and to address those needs in a cost-effective manner. The Company
believes that decentralization provides a low-overhead, highly efficient
operational structure that allows the Company to expand into geographically
contiguous markets and operate in relatively small communities that larger
competitors may not find attractive. The Company believes
 
                                       43
<PAGE>   46
 
that this structure gives the Company a strategic competitive advantage, given
the relatively rural nature of much of the Western U.S., and makes the Company
an attractive buyer to many potential acquisition candidates.
 
The Company currently delivers its services from 27 operating locations serving
ten market areas, or districts. Each district has a district manager, who has
autonomous service and decision-making authority for that district and is
responsible for maintaining service quality, promoting safety in the district's
operations, implementing marketing programs, and overseeing day-to-day
operations, including contract administration. District managers also help
identify acquisition candidates. Once the Company begins an acquisition,
business development managers, under the supervision of district and executive
managers, obtain the permits and other governmental approvals required for the
Company to operate the acquired business, including those related to zoning,
environmental and land use.
 
The Company's financial management, accounting, management information systems,
environmental compliance, risk management and certain personnel functions are
centralized and shared among locations to improve productivity, lower operating
costs and stimulate internal growth. The Company has installed a Company-wide
management information system that assists district personnel in making
decisions based on centralized, real-time financial, productivity, maintenance
and customer information. While district management operates with a high degree
of autonomy, the Company's senior officers monitor district operations and
require adherence to the Company's accounting, purchasing, marketing and
internal control policies, particularly with respect to financial matters. The
Company's executive officers regularly review the performance of district
managers and operations.
 
G CERTIFICATES
 
The Company performs a substantial portion of its collection business in
Washington under G certificates awarded by the Washington Utilities and
Transportation Commission (the "WUTC"). G certificates apply only to
unincorporated areas of Washington and municipalities that have elected to have
their solid waste collection overseen by the WUTC. G certificates generally
grant the holder the perpetual right to provide specified solid waste collection
and transportation services in a specified territory. The WUTC has repeatedly
determined that, in enacting the statute authorizing G certificates, the
Washington Legislature intended to favor grants of exclusive, rather than
overlapping, service rights for conventional solid waste services. Accordingly,
most G certificates currently grant exclusive solid waste collection and
transportation rights for conventional solid waste services in their specified
territories.
 
The WUTC and the Washington Legislature have generally construed G certificates
as conferring vested property rights that may be defeated, diminished or
cancelled only upon the occurrence of specified events of default, the
demonstrated lack of fitness of the certificate holder, or municipalities'
annexation of territory covered by a certificate. Thus, a certificate holder is
entitled to due process in challenging any action that affects its rights. In
addition, legislation passed in 1997 requires a municipality that annexes
territory covered by a G certificate either to grant the certificate holder an
exclusive franchise, generally with a minimum term of seven years, to continue
to provide services in the affected area, or to negotiate with the certificate
holder some other compensation for the collection rights in the affected area.
The statute expressly permits the certificate holder to sue the annexing
municipality for measurable damages that exceed the value of a
                                       44
<PAGE>   47
 
seven-year franchise agreement to provide services in the affected area. Under
one of the contracts with a municipality in Washington acquired by a predecessor
of the Company, the predecessor purported to waive its rights to compensation or
damages under the statute in return for the right to service any current or
prospectively annexed areas formerly covered by its G certificate.
 
In addition to awarding G certificates, the WUTC is required by statute to
establish just, reasonable and compensatory rates to customers of regulated
solid waste collection companies. The WUTC is charged with balancing the needs
of service providers to earn fair and sufficient returns on their investments in
plant and equipment against the needs of commercial and residential customers to
receive adequate and reasonably priced services. Over the past decade, the WUTC
has used a ratemaking methodology known as the "Lurito-Gallagher" method. This
method calculates rates based on the income statements and balance sheets of
each service provider, with the goal of establishing rates that reflect the
costs of providing service and that motivate service providers to invest in
equipment that improves operating efficiency in a cost-effective manner. The
Lurito-Gallagher rate-setting methodology was adjusted in the early 1990's to
better reflect the costs of providing recycling services, by accounting for
providers' increasing use of automated equipment and adjusting for the
cyclicality of the secondary recyclables markets. This has often resulted in
more frequent rate adjustments in response to material cost shifts.
 
SALES AND MARKETING
 
In most of the Company's existing markets, waste collection, transfer and
disposal services are provided to municipalities and governmental authorities
under exclusive franchise agreements, municipal contracts and G certificates;
service providers do not contract directly with individual customers. In
addition, because the Company has grown to date primarily through acquisitions,
the Company has generally assumed existing franchise agreements, municipal
contracts and G certificates from the acquired companies, rather than obtaining
new contracts. For these reasons, the Company's sales and marketing efforts to
date have been narrowly focused. The Company expects to add sales and marketing
personnel as necessary to: (i) solicit new customers in markets where it is not
the exclusive provider of solid waste services; (ii) expand its presence into
areas adjacent to or contiguous with its existing markets; and (iii) market
additional services to existing customers.
 
COMPETITION
 
   
The solid waste services industry is highly competitive and fragmented and
requires substantial labor and capital resources. The industry presently
includes four large national waste companies: Allied Waste Industries, Inc.,
Browning-Ferris Industries, Inc., Republic Services Inc., and Waste Management,
Inc. Several other public companies have annual revenues in excess of $100
million, including Casella Waste Systems, Inc., Superior Services, Inc. and
Waste Industries, Inc. Certain of the markets in which the Company competes or
will likely compete are served by one or more large, national solid waste
companies, as well as by numerous regional and local solid waste companies of
varying sizes and resources, some of which have accumulated substantial goodwill
in their markets. The Company also competes with operators of alternative
disposal facilities, including incinerators, and with counties, municipalities,
and solid waste districts that maintain their own waste collection and disposal
operations. Public sector operations may have financial
    
 
                                       45
<PAGE>   48
 
advantages over the Company, because of their access to user fees and similar
charges, tax revenues and tax-exempt financing.
 
The Company competes for collection, transfer and disposal volume based
primarily on the price and quality of its services. From time to time,
competitors may reduce the price of their services in an effort to expand their
market shares or service areas or to win competitively bid municipal contracts.
These practices may cause the Company to reduce the price of its services or, if
it elects not to do so, to lose business. The Company provides a substantial
portion of its residential, commercial and industrial collection services under
exclusive franchise and municipal contracts and certificates, some of which are
subject to periodic competitive bidding. The Company provides the balance of its
services under subscription agreements with individual households and one to
five year service contracts with commercial and industrial customers.
 
Intense competition exists not only for collection, transfer and disposal
volume, but also for acquisition candidates. The Company generally competes for
acquisition candidates with publicly owned regional and large national waste
management companies.
 
REGULATION
 
INTRODUCTION
 
The Company's landfill operations and non-landfill operations, including waste
transportation, transfer stations, vehicle maintenance shops and fueling
facilities, are all subject to extensive and evolving federal, state and local
environmental laws and regulations, the enforcement of which has become
increasingly stringent in recent years. The environmental regulations affecting
the Company are administered by the EPA and other federal, state and local
environmental, zoning, health and safety agencies. The WUTC regulates the
portion of the Company's collection business in Washington performed under G
certificates, which generally grant the Company perpetual and exclusive
collection rights in certain areas. The Company is currently in substantial
compliance with applicable federal, state and local environmental laws, permits,
orders and regulations. The Company does not currently anticipate any material
environmental costs necessary to bring its operations into compliance (although
there can be no assurance in this regard). The Company anticipates that
regulation, legislation and regulatory enforcement actions related to the solid
waste services industry will continue to increase. The Company attempts to
anticipate future regulatory requirements and to plan in advance as necessary to
comply with them.
 
The principal federal, state and local statutes and regulations that apply to
the Company's operations are described below. All of the federal statutes
described below contain provisions that authorize, under certain circumstances,
lawsuits by private citizens to enforce the provisions of the statutes. In
addition to a penalty award by the United States, some of those statutes
authorize an award of attorneys' fees to parties that successfully bring such an
action. Enforcement actions under these statutes may include both civil and
criminal penalties, as well as injunctive relief in some instances.
 
THE RESOURCE CONSERVATION AND RECOVERY ACT OF 1976 ("RCRA")
 
RCRA regulates the generation, treatment, storage, handling, transportation and
disposal of solid waste and requires states to develop programs to ensure the
safe disposal of solid
 
                                       46
<PAGE>   49
 
waste. RCRA divides solid waste into two groups, hazardous and nonhazardous.
Wastes are generally classified as hazardous if they either (i) are specifically
included on a list of hazardous wastes, or (ii) exhibit certain characteristics
defined as hazardous. Household wastes are specifically designated as
nonhazardous. Wastes classified as hazardous under RCRA are subject to much
stricter regulation than wastes classified as nonhazardous, and businesses that
deal with hazardous waste are subject to regulatory obligations in addition to
those imposed on handlers of nonhazardous waste.
 
The EPA regulations issued under Subtitle C of RCRA impose a comprehensive
"cradle to grave" system for tracking the generation, transportation, treatment,
storage and disposal of hazardous wastes. The Subtitle C Regulations impose
obligations on generators, transporters and disposers of hazardous wastes, and
require permits that are costly to obtain and maintain for sites where such
material is treated, stored or disposed. Subtitle C requirements include
detailed operating, inspection, training and emergency preparedness and response
standards, as well as requirements for manifesting, record keeping and
reporting, corrective action, facility closure, post-closure and financial
responsibility. Most states have promulgated regulations modeled on some or all
of the Subtitle C provisions issued by the EPA. Some state regulations impose
different, additional and more stringent obligations, and may regulate certain
materials as hazardous wastes that are not so regulated under the federal
Subtitle C Regulations. From the date of inception through January 4, 1999, the
Company did not, to its knowledge, transport hazardous wastes under
circumstances that would subject the Company to hazardous waste regulations
under RCRA. Some of the Company's ancillary operations (e.g., vehicle
maintenance operations) may generate hazardous wastes. The Company manages these
wastes in substantial compliance with applicable laws.
 
In October 1991, the EPA adopted the Subtitle D Regulations governing solid
waste landfills. The Subtitle D Regulations, which generally became effective in
October 1993, include location restrictions, facility design standards,
operating criteria, closure and post-closure requirements, financial assurance
requirements, groundwater monitoring requirements, groundwater remediation
standards and corrective action requirements. In addition, the Subtitle D
Regulations require that new landfill sites meet more stringent liner design
criteria (typically, composite soil and synthetic liners or two or more
synthetic liners) intended to keep leachate out of groundwater and have
extensive collection systems to carry away leachate for treatment prior to
disposal. Groundwater monitoring wells must also be installed at virtually all
landfills to monitor groundwater quality and, indirectly, the effectiveness of
the leachate collection system. The Subtitle D Regulations also require, where
certain regulatory thresholds are exceeded, that facility owners or operators
control emissions of methane gas generated at landfills in a manner intended to
protect human health and the environment. Each state is required to revise its
landfill regulations to meet these requirements or such requirements will be
automatically imposed by the EPA on landfill owners and operators in that state.
Each state is also required to adopt and implement a permit program or other
appropriate system to ensure that landfills in the state comply with the
Subtitle D Regulations. Various states in which the Company operates or in which
it may operate in the future have adopted regulations or programs as stringent
as, or more stringent than, the Subtitle D Regulations.
 
RCRA also regulates underground storage of petroleum and other regulated
materials. RCRA requires registration, compliance with technical standards for
tanks, release
 
                                       47
<PAGE>   50
 
detection and reporting, and corrective action, among other things. Certain of
the Company's facilities and operations are subject to these requirements.
 
THE FEDERAL WATER POLLUTION CONTROL ACT OF 1972, AS AMENDED
(THE "CLEAN WATER ACT")
 
The Clean Water Act regulates the discharge of pollutants from a variety of
sources, including solid waste disposal sites and transfer stations, into waters
of the United States. If run-off from the Company's transfer stations or run-off
or collected leachate from the Company's owned or operated landfills is
discharged into streams, rivers or other surface waters, the Clean Water Act
would require the Company to apply for and obtain a discharge permit, conduct
sampling and monitoring and, under certain circumstances, reduce the quantity of
pollutants in such discharge. Also, virtually all landfills are required to
comply with the EPA's storm water regulations issued in November 1990, which are
designed to prevent contaminated landfill storm water runoff from flowing into
surface waters. The Company believes that its facilities comply in all material
respects with the Clean Water Act requirements. Various states in which the
Company operates or in which it may operate in the future have been delegated
authority to implement the Clean Water Act permitting requirements, and some of
these states have adopted regulations that are more stringent than the federal
requirements. For example, states often require permits for discharges to ground
water as well as surface water.
 
THE COMPREHENSIVE ENVIRONMENTAL RESPONSE, COMPENSATION, AND
LIABILITY ACT OF 1980 ("CERCLA")
 
CERCLA established a regulatory and remedial program intended to provide for the
investigation and cleanup of facilities where or from which a release of any
hazardous substance into the environment has occurred or is threatened. CERCLA's
primary mechanism for remedying such problems is to impose strict joint and
several liability for cleanup of facilities on current owners and operators of
the site, former owners and operators of the site at the time of the disposal of
the hazardous substances, any person who arranges for the transportation,
disposal or treatment of the hazardous substances, and the transporters who
select the disposal and treatment facilities. CERCLA also imposes liability for
the cost of evaluating and remedying any damage to natural resources. The costs
of CERCLA investigation and cleanup can be very substantial. Liability under
CERCLA does not depend on the existence or disposal of "hazardous waste" as
defined by RCRA; it can also be based on the existence of even very small
amounts of the more than 700 "hazardous substances" listed by the EPA, many of
which can be found in household waste. In addition, the definition of "hazardous
substances" in CERCLA incorporates substances designated as hazardous or toxic
under the federal Clean Water Act, Clear Air Act and Toxic Substances Control
Act. If the Company were found to be a responsible party for a CERCLA cleanup,
the enforcing agency could hold the Company, or any other generator, transporter
or the owner or operator of the contaminated facility, responsible for all
investigative and remedial costs, even if others were also liable. CERCLA also
authorizes the imposition of a lien in favor of the United States on all real
property subject to, or affected by, a remedial action for all costs for which a
party is liable. CERCLA gives a responsible party the right to bring a
contribution action against other responsible parties for their allocable shares
of investigative and remedial costs. The Company's ability to obtain
reimbursement from others for their allocable shares of such costs would be
limited by its ability to find other responsible parties and prove the extent of
their
                                       48
<PAGE>   51
 
responsibility and by the financial resources of such other parties. Various
state laws also impose liability for investigation, cleanup and other damages
associated with hazardous substance releases.
 
THE CLEAN AIR ACT
 
The Clean Air Act generally, through state implementation of federal
requirements, regulates emissions of air pollutants from certain landfills based
on factors such as the date of the landfill construction and volume per year of
emissions of regulated pollutants. Larger landfills and landfills located in
areas where the ambient air does not meet certain requirements of the Clean Air
Act may be subject to even more extensive air pollution controls and emission
limitations. In addition, the EPA has issued standards regulating the disposal
of asbestos-containing materials. Air permits to construct may be required for
gas collection and flaring systems, and operating permits may be required,
depending on the potential air emissions. State air regulatory programs may
implement the federal requirements but may impose additional restrictions. For
example, some state air programs uniquely regulate odor and the emission of
toxic air pollutants.
 
THE OCCUPATIONAL SAFETY AND HEALTH ACT OF 1970 (THE "OSH ACT")
 
The OSH Act is administered by the Occupational Safety and Health Administration
("OSHA"), and in many states by state agencies whose programs have been approved
by OSHA. The OSH Act establishes employer responsibilities for worker health and
safety, including the obligation to maintain a workplace free of recognized
hazards likely to cause death or serious injury, to comply with adopted worker
protection standards, to maintain certain records, to provide workers with
required disclosures and to implement certain health and safety training
programs. Various OSHA standards may apply to the Company's operations,
including standards concerning notices of hazards, safety in excavation and
demolition work, the handling of asbestos and asbestos-containing materials, and
worker training and emergency response programs.
 
FLOW CONTROL/INTERSTATE WASTE RESTRICTIONS
 
Certain permits and approvals, as well as certain state and local regulations,
may limit a landfill or transfer station to accepting waste that originates from
specified geographic areas, restrict the importation of out-of-state waste or
wastes originating outside the local jurisdiction or otherwise discriminate
against non-local waste. These restrictions, generally known as flow control
restrictions, are controversial, and some courts have held that some flow
control schemes violate constitutional limits on state or local regulation of
interstate commerce. From time to time, federal legislation is proposed that
would allow some local flow control restrictions. Although no such federal
legislation has been enacted to date, if such federal legislation should be
enacted in the future, states in which the Company operates landfills could
limit or prohibit the importation of out-of-state waste or direct that wastes be
handled at specified facilities. Such state actions could adversely affect the
Company's landfills. These restrictions could also result in higher disposal
costs for the Company's collection operations. If the Company were unable to
pass such higher costs through to its customers, its business, financial
condition and operating results could be adversely affected.
 
Certain state and local jurisdictions may also seek to enforce flow control
restrictions through local legislation or contractually. In certain cases, the
Company may elect not to
 
                                       49
<PAGE>   52
 
challenge such restrictions. These restrictions could reduce the volume of waste
going to landfills in certain areas, which may adversely affect the Company's
ability to operate its landfills at their full capacity and/or reduce the prices
that the Company can charge for landfill disposal services. These restrictions
may also result in higher disposal costs for the Company's collection
operations. If the Company were unable to pass such higher costs through to its
customers, its business, financial condition and operating results could be
adversely affected.
 
STATE AND LOCAL REGULATION
 
Each state in which the Company now operates or may operate in the future has
laws and regulations governing the generation, storage, treatment, handling,
transportation and disposal of solid waste, occupational safety and health,
water and air pollution and, in most cases, the siting, design, operation,
maintenance, closure and post-closure maintenance of landfills and transfer
stations. State and local permits and approval for these operations may be
required and may be subject to periodic renewal, modification or revocation by
the issuing agencies. In addition, many states have adopted statutes comparable
to, and in some cases more stringent than, CERCLA. These statutes impose
requirements for investigation and cleanup of contaminated sites and liability
for costs and damages associated with such sites, and some provide for the
imposition of liens on property owned by responsible parties. Furthermore, many
municipalities also have ordinances, local laws and regulations affecting the
Company's operations. These include zoning and health measures that limit solid
waste management activities to specified sites or activities, flow control
provisions that direct or restrict the delivery of solid wastes to specific
facilities, laws that grant the right to establish franchises for collection
services and then put such franchises out for bid, and bans or other
restrictions on the movement of solid wastes into a municipality.
 
Permits or other land use approvals with respect to a landfill, as well as state
or local laws and regulations, may specify the quantity of waste that may be
accepted at the landfill during a given time period, and/or specify the types of
waste that may be accepted at the landfill. Once an operating permit for a
landfill is obtained, it must generally be renewed periodically.
 
There has been an increasing trend at the state and local level to mandate and
encourage waste reduction at the source and waste recycling, and to prohibit or
restrict the disposal of certain types of solid wastes, such as yard wastes,
leaves and tires, in landfills. The enactment of regulations reducing the volume
and types of wastes available for transport to and disposal in landfills could
prevent the Company from operating its facilities at their full capacity.
 
Some state and local authorities enforce certain federal laws in addition to
state and local laws and regulations. For example, in some states, RCRA, the OSH
Act, parts of the Clean Air Act and parts of the Clean Water Act are enforced by
local or state authorities instead of by the EPA, and in some states those laws
are enforced jointly by state or local and federal authorities.
 
PUBLIC UTILITY REGULATION
 
In many states, public authorities regulate the rates that landfill operators
may charge. The rates that the Company may charge at the Fairmead Landfill for
the disposal of municipal
 
                                       50
<PAGE>   53
 
solid waste are regulated by the Madera County Board of Supervisors. The
adoption of rate regulation or the reduction of current rates in states in which
the Company owns or operates landfills could adversely affect the Company's
business, financial condition and operating results.
 
Solid waste collection services in all unincorporated areas of Washington and in
electing municipalities in Washington are provided under G certificates awarded
by the Washington Utilities and Transportation Commission. The WUTC also sets
rates for regulated solid waste collection services in Washington.
 
RISK MANAGEMENT, INSURANCE AND PERFORMANCE BONDS
 
The Company maintains an environmental and other risk management programs
appropriate for its business. The Company's environmental risk management
program includes evaluating existing facilities and potential acquisitions for
environmental law compliance. The Company does not presently expect
environmental compliance costs to increase above current levels, but it cannot
predict whether future acquisitions will cause such costs to increase. The
Company also maintains a worker safety program that encourages safe practices in
the workplace. Operating practices at all Company operations emphasize
minimizing the possibility of environmental contamination and litigation. The
Company's facilities comply in all material respects with applicable federal and
state regulations.
 
The Company carries a broad range of insurance, which its management considers
adequate to protect the Company's assets and operations. The coverage includes
general liability, comprehensive property damage, workers' compensation and
other coverage customary in the industry. These policies generally exclude
coverage for damages associated with environmental conditions. Because of the
limited availability and high cost of environmental impairment liability
insurance, and in light of the Company's limited landfill operations, the
Company has not obtained such coverage. If the Company were to incur liability
for environmental cleanups, corrective action or damage, its financial condition
could be materially and adversely affected. The Company will continue to
investigate the possibility of obtaining environmental impairment liability
insurance, particularly if it acquires or operates landfills other than the
Fairmead Landfill and the Red Carpet Landfill. The Company believes that most
other landfill operators do not carry such insurance.
 
Municipal solid waste collection contracts may require performance bonds or
other means of financial assurance to secure contractual performance. Certain
environmental regulations also require demonstrated financial assurance to meet
closure and post-closure requirements for landfills. The Company has not
experienced difficulty in obtaining performance bonds or letters of credit for
its current operations. At January 4, 1999, the Company had provided customers
and various regulatory authorities with surety bonds and letters of credit in
the aggregate amount of approximately $1.9 million to secure its obligations.
The Company's credit facility provides for the issuance of letters of credit in
an amount up to $15 million, but any letters of credit issued reduce the
availability of borrowings for acquisitions and other general corporate
purposes. If the Company were unable to obtain surety bonds or letters of credit
in sufficient amounts or at acceptable rates, it could be precluded from
entering into additional municipal solid waste collection contracts or obtaining
or retaining landfill operating permits.
 
                                       51
<PAGE>   54
 
PROPERTY AND EQUIPMENT
 
As of January 4, 1999, the Company owned and operated 27 collection operations,
seven transfer stations and one Subtitle D landfill and operated an additional
five transfer stations, one Subtitle D landfill and four recycling facilities.
The Company leases various offices and facilities, including its corporate
offices in Roseville, California. The real estate owned by the Company is not
subject to material encumbrances. The Company owns various equipment, including
waste collection and transportation vehicles, related support vehicles, carts,
containers, and heavy equipment used in landfill operations. The Company
believes that its existing facilities and equipment are generally adequate for
its current operations. However, the Company expects to make additional
investments in property and equipment for expansion and replacement of assets
and in connection with future acquisitions.
 
EMPLOYEES
 
At January 4, 1999, the Company employed approximately 627 full-time employees,
including approximately 41 persons classified as professionals or managers,
approximately 525 employees involved in collection, transfer, disposal and
recycling operations, and approximately 61 sales, clerical, data processing or
other administrative employees.
 
Approximately 55 drivers and mechanics at the Company's Vancouver, Washington
operation are represented by the Teamsters Union, with which Browning-Ferris
Industries of Washington, Inc., the Company's predecessor in Vancouver, entered
a four-year collective bargaining agreement in January 1997. Approximately 11
drivers at Arrow are currently represented by the Teamsters Union, with which
Arrow entered a three-year collective bargaining agreement in March 1998.
Approximately 65 drivers at Murrey's Disposal Company and American Disposal
Company are represented by the Teamsters Union, with which those companies
entered into a three-year collective bargaining agreement in June 1996. In
addition, in July 1997, the employees at the Company's facility in Issaquah,
Washington, adopted a measure to select a union to represent them in labor
negotiations with management. The union and management operated under a one-
year negotiating agreement that ended on July 27, 1998. Since that date,
negotiations have continued between the union and the Company, although the
union is permitted to call a strike or call for arbitration of the outstanding
issues. The employees at Issaquah have filed to decertify the union, and the
union has filed a claim with the National Labor Relations Board to attempt to
block the decertification. The Company is not aware of any other organizational
efforts among its employees and believes that its relations with its employees
are good.
 
LEGAL PROCEEDINGS
 
The Company is a party to various legal proceedings in the ordinary course of
business and as a result of the extensive governmental regulation of the solid
waste industry. Management does not believe that these proceedings, either
individually or in the aggregate, are likely to have a material adverse effect
on the Company's business, financial condition, operating results or cash flows.
 
                                       52
<PAGE>   55
 
                                   MANAGEMENT
 
EXECUTIVE OFFICERS AND DIRECTORS
 
The following table sets forth certain information concerning the Company's
executive officers and directors as of January 4, 1999:
 
<TABLE>
<CAPTION>
            NAME               AGE                    POSITIONS
            ----               ---                    ---------
<S>                            <C>   <C>
Ronald J.
  Mittelstaedt(1)(2).........  35    President, Chief Executive Officer and
                                     Chairman
Steven F. Bouck..............  41    Executive Vice President and Chief
                                     Financial Officer
Eugene V. Dupreau(3).........  51    Vice President -- Madera; Director
Charles B. Youngclaus........  58    Vice President -- Madera; Advisory Director
Darrell W. Chambliss.........  34    Vice President -- Operations; Secretary
Michael R. Foos..............  33    Vice President and Corporate Controller
Eric J. Moser................  32    Treasurer and Assistant Corporate
                                     Controller
David M. Hall................  41    Vice President -- Business Development
Michael W. Harlan(1)(2)(3)...  37    Director
William J.
  Razzouk(1)(2)(3)...........  51    Director
</TABLE>
 
- -------------------------
(1) Member of the Executive Committee.
 
(2) Member of the Audit Committee.
 
(3) Member of the Compensation Committee.
 
Ronald J. Mittelstaedt has been President, Chief Executive Officer and a
director of the Company since it was formed, and was elected Chairman in January
1998. He also served as a consultant to the Company in August and September
1997. Mr. Mittelstaedt has more than ten years of experience in the solid waste
industry. He served as a consultant to United Waste Systems, Inc., with the
title of Executive Vice President, from January 1997 to August 1997, where he
was responsible for corporate development for all states west of Colorado. As
Regional Vice President of USA Waste Services, Inc. (including Sanifill, Inc.,
which was acquired by USA Waste Services, Inc.) from November 1993 to January
1997, he was responsible for all operations in 16 states and Canada. Mr.
Mittelstaedt held various positions at Browning-Ferris Industries, Inc. from
August 1987 to November 1993, most recently as Division Vice President in
northern California, overseeing the San Jose market. Previously he was the
District Manager responsible for BFI's operations in Sacramento and the
surrounding areas. He holds a B.S. in Finance from the University of California
at Santa Barbara.
 
Steven F. Bouck has been Executive Vice President and Chief Financial Officer of
the Company since February 1998. Mr. Bouck held various positions with First
Analysis Corporation from 1986 to 1998, including most recently as Managing
Director coordinating corporate finance. In that capacity, he provided merger
and acquisition advisory services to companies in the environmental industry.
Mr. Bouck was also responsible for assisting in investing venture capital funds
focussed on the environmental industry that were managed by First Analysis. In
connection with those investments, he served on the boards of directors of
several companies. While at First Analysis, Mr. Bouck also provided analytical
research coverage of a number of publicly traded environmental services
companies. Mr. Bouck holds B.S. and M.S. degrees in mechanical engineering from
Rensselaer
 
                                       53
<PAGE>   56
 
Polytechnic Institute and an M.B.A. in Finance from the Wharton School. He has
been a Chartered Financial Analyst since 1990.
 
Eugene V. Dupreau has been Vice President -- Madera and a director of the
Company since February 23, 1998. Mr. Dupreau served as President and a director
of Madera Disposal Systems, Inc. beginning in 1981 and 1985, respectively, and
held both positions until the Company acquired Madera in 1998. Mr. Dupreau holds
a B.S. in Business Administration from Fresno State University and has completed
advanced coursework in waste management. He serves as a director of several
civic and charitable organizations in Madera County.
 
Charles B. Youngclaus has been Vice President -- Madera and an advisory director
of the Company since February 23, 1998. Mr. Youngclaus founded Madera Disposal
Systems, Inc. in 1981 and was its Chief Operating Officer and Vice President
before its acquisition by the Company in 1998. Mr. Youngclaus owned and operated
Madera's predecessor company, Madera County Disposal, from 1965 to 1981. Mr.
Youngclaus holds a B.S. from Fresno State University and has completed advanced
coursework in waste management, including certification in clay liner
construction by the University of Texas in 1992. Mr. Youngclaus is a Board
Member of the California Refuse Removal Council and is incoming Treasurer of the
Northern California chapter.
 
Darrell W. Chambliss has been Vice President -- Operations and Secretary of the
Company since October 1, 1997. Mr. Chambliss held various management positions
at USA Waste Services, Inc. (including Sanifill, Inc. and United Waste, Inc.,
both of which were acquired by USA Waste Services, Inc.) from April 1995 to
September 1997, including most recently Division Manager in Corning, California,
where he was responsible for the operations of 19 operating companies as well as
supervising and integrating acquisitions. From July 1989 to April 1995, he held
various management positions with Browning-Ferris Industries, Inc., including
serving as Assistant District Manager in San Jose, California, where he was
responsible for a significant hauling operation, and serving as District Manager
in Tucson, Arizona for more than three years. Mr. Chambliss holds a B.S. in
Business Administration from the University of Arkansas.
 
Michael R. Foos has been Vice President and Corporate Controller of the Company
since October 1, 1997. Mr. Foos served as Division Controller of USA Waste
Services, Inc. (including Sanifill, Inc., which was acquired by USA Waste
Services, Inc.) from October 1996 to September 1997, where he was responsible
for financial compilation and reporting and acquisition due diligence for a
seven-state region. Mr. Foos served as Assistant Regional Controller at USA
Waste Services, Inc. from August 1995 to September 1996, where he was
responsible for internal financial reporting for operations in six states and
Canada. Mr. Foos also served as District Controller for Waste Management, Inc.
from February 1990 to July 1995, and was a member of the audit staff of Deloitte
& Touche from 1987 to 1990. Mr. Foos holds a B.S. in Accounting from Ferris
State University.
 
David M. Hall has been Vice President -- Business Development since August 1,
1998. Mr. Hall has over twelve years experience in the solid waste industry with
extensive operating and marketing experience in the Western U.S. From October,
1995 to July, 1998, Mr. Hall was the Divisional Vice President of USA Waste
Services, Inc., Rocky Mountain Division (including for Sanifill, Inc. which was
acquired by USA Waste Services, Inc.). In that position, he oversaw all
operations and business development in six Rocky Mountain states. Prior to
Sanifill, Mr. Hall held various management positions with
 
                                       54
<PAGE>   57
 
BFI from October, 1986 to October, 1995, including Vice President of Sales for
the Western United States. Prior to the solid waste industry, Mr. Hall was
employed from 1979 to 1986 in a variety of sales and marketing management
positions in the high technology sector. Mr. Hall received a BS degree in
Management and Marketing in 1979 from SW Missouri State University.
 
Eric J. Moser has been the Company's Treasurer and Assistant Corporate
Controller since October 1, 1997. From August 1995 to September 1997, Mr. Moser
held various finance positions at USA Waste Services, Inc. (including Sanifill,
Inc., which was acquired by USA Waste Services, Inc.), most recently as
Controller of the Ohio Division, where he was responsible for internal financial
compilation and reporting and acquisition due diligence. Previously Mr. Moser
was Controller of the Michigan Division of USA Waste Services, Inc., where he
was responsible for internal financial reporting. Mr. Moser served as Controller
for Waste Management, Inc. from June 1993 to August 1995, where he was
responsible for internal financial reporting for a hauling company, landfill and
transfer station. Mr. Moser holds a B.S. in Accounting from Illinois State
University.
 
Michael W. Harlan has been a director of the Company since January 30, 1998.
From November 1997 to January 30, 1998, Mr. Harlan served as a consultant to the
Company on various financial matters. From March 1997 to August 1998, Mr. Harlan
was Vice President and Chief Financial Officer of Apple Orthodontix, Inc., a
publicly traded company that provides practice management services to
orthodontic practices in the U.S. and Canada. From April 1991 to December 1996,
Mr. Harlan held various positions in the finance and acquisition departments of
USA Waste Services, Inc. (including Sanifill, Inc., which was acquired by USA
Waste Services, Inc.), including serving as Treasurer and Assistant Secretary
beginning in September 1993. From May 1982 to April 1991, Mr. Harlan held
various positions in the tax and corporate financial consulting services
division of Arthur Andersen LLP, where he was a Manager since July 1986. Mr.
Harlan is a Certified Public Accountant and holds a B.A. from the University of
Mississippi.
 
   
William J. Razzouk has been a director of the Company since January 30, 1998.
Since September 1998, Mr. Razzouk has been Chairman and Chief Executive Officer
of PlanetRx, an e-commerce start-up focused on health care, filling of
prescriptions, over-the-counter medicines, health and beauty products and
medical supplies. From April 1998 until September 1998, Mr. Razzouk owned a
management consulting business and an investment company that focused on
identifying strategic acquisitions. From September 1997 until April 1998, he was
also the President, Chief Operating Officer and a director of Storage USA, Inc.,
a publicly traded real estate investment trust that owns and operates more than
350 mini storage warehouses. He served as the President and Chief Operating
Officer of America Online from February 1996 to June 1996. From 1983 to 1996,
Mr. Razzouk held various management positions at Federal Express Corporation,
most recently as Executive Vice President, World Wide Customer Operations, with
full worldwide profit and loss responsibility. Mr. Razzouk previously held
management positions at ROLM Corporation, Philips Electronics and Xerox
Corporation. He is a member of the Board of Directors of Fritz Companies, Inc.
and previously was a director of Sanifill, Inc., Cordis Corp. and La Quinta
Motor Inns. He holds a Bachelor of Journalism degree from the University of
Georgia.
    
 
The Company has agreed to appoint a representative of the shareholders of the
Murrey Companies to Company's Board of Directors. The Murrey Companies' nominee
would be
 
                                       55
<PAGE>   58
 
appointed after completion of the acquisition of the Murrey Companies to a class
of directors whose term of office ends at the annual meeting of stockholders for
the fiscal year ending December 31, 2000. The Murrey Companies' shareholders
have not yet decided who they intend to nominate as their representative on the
Board of Directors.
 
CLASSIFICATION OF BOARD OF DIRECTORS
 
The Board of Directors is divided into three classes. The term of office of the
first class (currently comprised of Eugene V. Dupreau) will expire at the annual
meeting of stockholders following the fiscal year ending December 31, 1998. The
term of office of the second class (currently comprised of Michael W. Harlan and
William J. Razzouk) will expire at the annual meeting of stockholders following
the fiscal year ending December 31, 1999. The term of office of the third class
(currently comprised of Ronald J. Mittelstaedt) will expire at the annual
meeting of stockholders following the fiscal year ending December 31, 2000. At
each annual meeting, stockholders will elect successors to the directors of the
class whose term expires at such meeting, to serve for three-year terms and
until their successors are elected and qualified. See "Description of Capital
Stock -- Certain Charter and By-Law Provisions -- Classified Board of
Directors."
 
COMMITTEES OF THE BOARD
 
The Board of Directors has established an Executive Committee and has authorized
an Audit Committee and a Compensation Committee. A majority of the members of
the Executive Committee are, and both members of each of the Audit and
Compensation Committees are, independent directors who are not employees of the
Company or one of its subsidiaries.
 
COMPENSATION OF DIRECTORS
 
Directors who are officers or employees of the Company do not currently receive
any compensation for attending meetings of the Board of Directors. Each
independent director receives a fee of $1,500 for attending each Board meeting
and each committee meeting (unless held on the same day as the full Board
meeting), in addition to reimbursement of reasonable expenses.
 
Each independent director who has not been an employee of the Company at any
time during the 12 months preceding his initial election and appointment to the
Board is granted an option to purchase 15,000 shares of the Company's Common
Stock at the time of his or her initial election or appointment. The Company has
granted to each of Messrs. Harlan and Razzouk options to purchase 15,000 shares
of Common Stock at $3.00 per share, exercisable on October 1, 1998.
 
Beginning in 1999, the Company will grant each independent director, on February
1 of each year during which such person serves on the Board, an option to
purchase 7,500 shares of the Company's Common Stock. All such options will have
an exercise price equal to the fair market value of the Common Stock on the
grant date, will vest in full on the grant date, and will expire upon the
earlier to occur of ten years after the grant date or one year after the
director ceases to be a member of the Board.
 
                                       56
<PAGE>   59
 
EXECUTIVE COMPENSATION
 
SUMMARY COMPENSATION INFORMATION
 
The Company was incorporated in September 1997. The following table contains
information about the annual and long-term compensation earned in 1997 and 1998
by the Chief Executive Officer and the other Executive Officers who were paid or
earned more than $100,000. The persons named in the table are sometimes referred
to herein as the "named executive officers." No officer other than Mr.
Mittelstaedt was paid or earned more than $100,000 in 1997. The Chief Executive
Officer has been compensated in accordance with the terms of his Employment
Agreement described below.
 
SUMMARY COMPENSATION TABLE
 
   
<TABLE>
<CAPTION>
                                                         LONG-TERM
                                                        COMPENSATION            SHARES
                          ANNUAL COMPENSATION       --------------------      UNDERLYING
                       --------------------------             RESTRICTED   OPTIONS/WARRANTS      ALL OTHER
                       TERM  SALARY(1)   BONUS(1)    OTHER      STOCK         GRANTED(2)      COMPENSATION(3)
                       ----  ---------   --------   -------   ----------   ----------------   ---------------
<S>                    <C>   <C>         <C>        <C>       <C>          <C>                <C>
Ronald J.
  Mittelstaedt.......  1997  $ 39,903    $ 25,000        --       --           200,000            $10,000
Ronald J.
  Mittelstaedt.......  1998   176,577     100,000   $10,254       --                --                 --
Steven F. Bouck......  1998    92,887     150,000        --       --           250,000                 --
Darrell W.
  Chambliss..........  1998    89,972      76,822        --       --                --                 --
Michael R. Foos......  1998    89,809      67,039        --       --                --                 --
Eric J. Moser........  1998    74,115      31,563        --       --                --                 --
</TABLE>
    
 
- -------------------------
(1) Mr. Mittelstaedt's salary and bonus figures for 1997 reflect employment from
    October 1, 1997 through December 31, 1997. His bonus figure for 1997
    reflects portion earned during 1997; such bonus was paid in 1998.
 
(2) See "Option and Warrant Grants" below.
 
(3) Consists of consulting fees for services rendered prior to the Company's
    formation.
 
STOCK OPTIONS AND WARRANTS
 
Option and Warrant Grants. The following table contains information concerning
the grant during 1998 to the named executive officers of options and warrants to
purchase shares of the Company's Common Stock. No options or warrants were
granted to Messrs. Mittelstaedt, Chambliss, Foos or Moser in 1998.
 
1998 OPTION GRANTS
 
<TABLE>
<CAPTION>
                                                                                     POTENTIAL REALIZABLE
                                                                                       VALUE AT ASSUMED
                       NUMBER OF                                                        ANNUAL RATES OF
                         SHARES      % OF TOTAL                                           STOCK PRICE
                       UNDERLYING   OPTIONS AND                                        APPRECIATION FOR
                        OPTIONS       WARRANT                                           OPTION/WARRANT
                          AND        GRANTED TO                                             TERM(3)
       NAME OF          WARRANT     EMPLOYEES IN   EXERCISE PRICE    EXPIRATION     -----------------------
  BENEFICIAL OWNER     GRANTED(1)       1998        PER SHARE(2)        DATE            5%          10%
  ----------------     ----------   ------------   --------------   -------------   ----------   ----------
<S>                    <C>          <C>            <C>              <C>             <C>          <C>
Steven F. Bouck......   150,000         29.4           $ 2.80       Jan. 31, 2008   $3,873,956   $6,134,140
- --                       50,000          9.8           $ 9.50       Jan. 31, 2008   $  956,319   $1,709,713
- --                       50,000          9.8           $12.50       Jan. 31, 2008   $  806,319   $1,559,713
</TABLE>
 
- -------------------------
(1) All options vested 33% on October 1, 1998 and will vest an additional 33% on
    October 1, 1999 and 34% on October 1, 2000.
 
(2) The options and warrant were granted at or above fair market value as
    determined by the Board of Directors on the date of grant.
 
                                       57
<PAGE>   60
 
(3) Amounts reported in these columns represent amounts that the named executive
    officer could realize on exercise of options and warrant immediately before
    they expire, assuming that the Company's Common Stock appreciates at 5% or
    10% annually. These amounts do not take into account taxes and expenses that
    may be payable on such exercise. The amount actually realized will depend on
    the price of the Common Stock when the options or warrants are exercised,
    which may be before the term expires. The Commission requires the table to
    reflect 5% and 10% annualized rates of stock price appreciation; the Company
    does not project those rates. The Common Stock may not appreciate at those
    rates.
 
Option and Warrant Values. The following table shows the value of the named
executive officers' exercises of options during 1998 and the value of their
unexercised options and warrants outstanding as of December 31, 1998.
 
AGGREGATED OPTION EXERCISES IN 1998 AND YEAR-END OPTION AND WARRANT VALUES
 
   
<TABLE>
<CAPTION>
                                                  NUMBER OF SHARES UNDERLYING         VALUE OF UNEXERCISED
                                                    UNEXERCISED OPTIONS AND         IN-THE-MONEY OPTIONS AND
                                                           WARRANT AT                      WARRANT AT
                           SHARES                      DECEMBER 31, 1998              DECEMBER 31, 1998(1)
                          ACQUIRED      VALUE     ----------------------------    ----------------------------
                         ON EXERCISE   REALIZED   EXERCISABLE    UNEXERCISABLE    EXERCISABLE    UNEXERCISABLE
                         -----------   --------   -----------    -------------    -----------    -------------
<S>                      <C>           <C>        <C>            <C>              <C>            <C>
Ronald J.
  Mittelstaedt.........        --            --     133,000          67,000       $2,071,475      $1,043,525
Steven F. Bouck........    92,919      $861,311      23,749         133,332          160,711       1,529,985
Darrell W. Chambliss...     --            --         50,000         100,000          650,422       1,300,828
Michael R. Foos........     --            --         50,000         100,000          650,422       1,300,828
Eric J. Moser..........     --            --         28,334          56,666          351,466         702,909
</TABLE>
    
 
- -------------------------
(1) Based on the Common Stock's closing price of $18.375 on the Nasdaq National
    Market on December 31, 1998.
 
EMPLOYMENT AGREEMENTS
 
The Company has entered into employment agreements with Steven F. Bouck, Eugene
V. Dupreau, Charles B. Youngclaus, Darrell W. Chambliss, Michael R. Foos, Eric
J. Moser and David M. Hall. Each agreement has a three-year term.
 
The Company entered into an employment agreement with Ronald J. Mittelstaedt,
the President and the Chief Executive Officer, on October 1, 1997. The initial
annual base salary is $170,000. Mr. Mittelstaedt's base salary was adjusted to
$200,000 on October 1, 1998.
 
The agreement has an initial five-year term, and then automatically renews for
additional successive one-year terms unless terminated earlier upon written
notice of either Mr. Mittelstaedt or the Company or extended further by the
Board. The Company or Mr. Mittelstaedt may terminate the agreement with or
without cause at any time. If the Company terminates the agreement without cause
(as defined in the agreement) or if Mr. Mittelstaedt terminates the agreement
for good reason (as defined in the agreement), the Company is required to make
certain severance payments, and all of Mr. Mittelstaedt's unvested options,
warrants and rights relating to capital stock of the Company will immediately
vest. A change of control of the Company (as defined in the agreement) is
generally treated as a termination of Mr. Mittelstaedt without cause.
 
                                       58
<PAGE>   61
 
Under the employment agreement, the Company sold Mr. Mittelstaedt 617,500 shares
of the Company's Common Stock for $0.01 per share and 357,143 shares of the
Company's Series A Preferred Stock for $1,000,000. Mr. Mittelstaedt may
recommend nominees for election to the Company's Board of Directors. If the
Board has five or fewer members, Mr. Mittelstaedt may recommend two nominees,
and if it consists of more than five members, he may recommend three nominees.
 
COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION
 
The full Board of Directors served as the compensation committee of the Board
during 1997. When the employment agreement with Mr. Mittelstaedt was approved by
the Board of Directors, Mr. Mittelstaedt was one of three members of the Board
of Directors. No executive officer of the Company served as a director or member
of the compensation committee of another entity, one of whose executive officers
served as a director or member of the Compensation Committee of the Company.
 
1997 STOCK OPTION PLAN
 
The 1997 Stock Option Plan (the "Stock Option Plan") was adopted by the Board of
Directors effective as of October 1, 1997, and was approved by the stockholders
on March 12, 1998. The Stock Option Plan is intended to provide employees,
consultants and directors with additional incentives by increasing their
proprietary interests in the Company. Under the Stock Option Plan, the Company
may grant options with respect to a maximum of 1,200,000 shares of Common Stock.
As of January 4, 1999, the Company had outstanding options to purchase 978,764
shares of Common Stock at a weighted average exercise price of $7.30 per share.
 
The Compensation Committee of the Board of Directors currently administers the
Stock Option Plan. The administrator of the Stock Option Plan determines the
employees, consultants and directors to whom options are granted (the
"Optionees"), the type, size and term of the options, the grant date, the
expiration date, the vesting schedule and other terms and conditions of the
options.
 
The Stock Option Plan provides for the grant of incentive stock options ("ISOs")
as defined in section 422 of the Internal Revenue Code, as amended, and
nonqualified stock options. Only employees of the Company may receive ISOs. The
aggregate fair market value, as of the grant date, of the Common Stock subject
to ISOs that become exercisable by any employee during any calendar year may not
exceed $100,000. Options generally become exercisable in installments pursuant
to a vesting schedule set forth in the option agreement. No option may be
granted after September 30, 2007. No option will remain exercisable later than
10 years after the grant date (or five years in the case of ISOs granted to
Optionees owning more than 10% of the total combined voting power of all classes
of the Company's outstanding capital stock (a "Ten Percent Stockholder")). The
exercise price of ISOs granted under the Stock Option Plan must be at least the
fair market value of a share of Common Stock on the grant date (or 110% of such
fair market value, in the case of ISOs granted to Ten Percent Stockholders).
 
If an Optionee with outstanding options retires or becomes disabled and does not
die within the three months after retirement or disability, the Optionee may
exercise his or her options, but generally only within the period ending on the
earlier of: (i) six months after retirement or disability; or (ii) the
expiration of the option set forth in the option
 
                                       59
<PAGE>   62
 
agreement. If the Optionee does not exercise his or her options within that time
period, the options terminate, and the shares of Common Stock subject to the
options become available for issuance under the Stock Option Plan. If the
Optionee ceases to be an employee, consultant or director of the Company other
than because of retirement, death or disability, his or her options generally
terminate on the date such relationship terminates, and the shares of Common
Stock subject to the options become available for issuance under the Stock
Option Plan. Each option agreement may give the Company the right to repurchase
shares acquired by an Optionee under the Stock Option Plan upon termination of
the Optionee.
 
                                       60
<PAGE>   63
 
                              CERTAIN TRANSACTIONS
 
INITIAL FUNDING
 
In September and October 1997, the Company sold 2,300,000 shares of Common Stock
at $0.01 per share and 2,499,998 shares of Series A Preferred Stock at $2.80 per
share to 19 accredited investors, including certain officers and directors of
the Company, in a private placement. The sales were made in accordance with
Regulation D under the Securities Act of 1933, as amended (the "Securities
Act"). The investors included the following officers and directors of the
Company, their immediate family members, and entities controlled by them:
 
Mittelstaedt Family Trust dated 6/18/97 (trustee is Ronald J. Mittelstaedt,
President, Chief Executive Officer and Chairman): 357,143 shares of Series A
Preferred for $1,000,000 and 617,500 shares of Common Stock for $6,175;
 
J. Bradford Bishop (former director; resigned January 30, 1998): 678,750 shares
of Common Stock for $6,787.50;
 
James N. Cutler, Jr. (former director; resigned January 30, 1998): 678,750
shares of Common Stock for $6,787.50;
 
Bishop-Cutler L.L.C. (controlled by former directors J. Bradford Bishop and
James N. Cutler, Jr.): 339,285 shares of Series A Preferred Stock for $950,000;
 
Frank W. Cutler (brother of former director James N. Cutler, Jr.): 142,857
shares of Series A Preferred Stock for $400,000 and 275,000 shares of Common
Stock for $2,750;
 
Darrell W. Chambliss (Vice President -- Operations): 20,000 shares of Common
Stock for $200;
 
Michael R. Foos (Vice President and Corporate Controller): 20,000 shares of
Common Stock for $200;
 
Eric J. Moser (Treasurer and Assistant Corporate Controller): 10,000 shares of
Common Stock for $100.
 
OPTIONS AND WARRANTS TO MANAGEMENT GROUP
 
On October 1, 1997, Darrell W. Chambliss, Michael R. Foos and Eric J. Moser were
granted options to purchase 150,000, 150,000 and 85,000 shares, respectively, of
Common Stock, pursuant to their respective employment agreements with the
Company.
 
On December 15, 1997, each of then directors James N. Cutler and J. Bradford
Bishop and Board consultant Frank W. Cutler was granted a warrant to purchase
247,000 shares of Common Stock at an exercise price of $2.80 per share. Messrs.
Cutler and Bishop resigned as directors on January 30, 1998, and Frank W.
Cutler's consulting relationship with the Board terminated on that date. On
December 15, 1997, Ronald J. Mittelstaedt was granted a warrant to purchase
100,000 shares of Common Stock at an exercise price of $2.80 per share and an
option to purchase 100,000 shares of Common Stock at an exercise price of $2.80
per share. All of the above warrants and options are currently exercisable,
except for the option to purchase 100,000 shares granted to Mr. Mittelstaedt,
one-third of which becomes exercisable on each of October 1, 1998, October 1,
1999, and October 1, 2000.
 
                                       61
<PAGE>   64
 
On December 15, 1997, Michael W. Harlan was granted a warrant to purchase 5,000
shares of Common Stock at an exercise price of $2.80 per share, exercisable on
October 1, 1998. On January 30, 1998, Mr. Harlan and William J. Razzouk were
each granted an option to purchase 15,000 shares of Common Stock at an exercise
price of $3.00 per share, exercisable on October 1, 1998.
 
On February 1, 1998, Steven F. Bouck was granted options to purchase 200,000
shares of Common Stock, pursuant to his employment agreement with the Company.
These options include an option to purchase 100,000 shares at an exercise price
of $2.80 per share, of which one-third is exercisable on each of October 1,
1998, October 1, 1999, and October 1, 2000. Of Mr. Bouck's remaining options, an
option to purchase 50,000 shares has an exercise price of $9.50 per share, and
an option to purchase 50,000 shares has an exercise price of $12.50 per share;
one-third of each of these options vests on each of October 1, 1998, October 1,
1999, and October 1, 2000. On February 1, 1998, Mr. Bouck was granted an
immediately exercisable warrant to purchase 50,000 shares of Common Stock at an
exercise price of $2.80 per share, which he exercised in March 1998.
 
On February 23, 1998, Eugene V. Dupreau and Charles B. Youngclaus were granted
warrants in connection with the Company's acquisition of Madera. See "Purchase
of Madera Disposal Systems, Inc." below.
 
On July 7, 1998, David M. Hall was granted options to purchase 50,000 shares of
Common Stock at an exercise price of $18.125 per share, one third of which
become exercisable on each of October 1, 1998, October 1, 1999, and October 1,
2000.
 
PURCHASE OF WASTE CONNECTIONS OF IDAHO, INC.
 
On January 30, 1998, the Company purchased all of the outstanding stock of Waste
Connections of Idaho, Inc. ("Waste Connections Idaho") from Ronald J.
Mittelstaedt, J. Bradford Bishop and James N. Cutler, Jr., the sole shareholders
of Waste Connections Idaho. The purchase price was $3,000, which was the
aggregate price that Messrs. Mittelstaedt, Bishop and Cutler had paid initially
for the shares. Messrs. Mittelstaedt, Bishop and Cutler formed Waste Connections
Idaho in September 1997 for the purpose of acquiring certain assets from
Browning-Ferris Industries of Idaho, Inc.
 
PURCHASE OF MADERA DISPOSAL SYSTEMS, INC.
 
Eugene V. Dupreau was President and a 16.7% shareholder of Madera Disposal
Systems, Inc. before it was acquired by the Company on February 23, 1998.
Charles B. Youngclaus was Chief Operating Officer and a 16.7% shareholder of
Madera before it was acquired by the Company. For their shares of Madera's
common stock, each of Messrs. Dupreau and Youngclaus received $630,662 in cash,
333,333 shares of the Company's Common Stock and warrants to purchase 66,667
shares of the Company's Common Stock at an exercise price of $4.00 per share.
Each of Messrs. Dupreau and Youngclaus has been engaged by the Company as Vice
President -- Madera. Mr. Dupreau was appointed a director of the Company,
effective February 23, 1998.
 
   
Pursuant to the agreement under which the Company acquired Madera, the Company
will issue additional restricted shares of the Company's Common Stock to former
Madera shareholders, including Messrs. Dupreau and Youngclaus, with respect to
the successful extension of a franchise agreement that was being negotiated by
Madera at the time of the Company's acquisition of Madera.
    
 
                                       62
<PAGE>   65
 
PURCHASE OF YOUNGCLAUS ENTERPRISES.
 
On September 9, 1998, the Company purchased the business assets of Youngclaus
Enterprises, a proprietorship, from Charles B. Youngclaus. The aggregate
purchase price was $139,000, which was paid through the issuance of Common
Stock.
 
TRANSACTIONS WITH FIBRES INTERNATIONAL.
 
The Company has entered into certain transactions with Continental Paper, LLC,
an Oregon limited liability company doing business as Fibres International
("Fibres"). J. Bradford Bishop and James N. Cutler, Jr. own 60% of the
membership interests in Fibres, were directors of the Company when some of these
transactions occurred and may be deemed promoters of the Company. In markets
where Fibres has processing facilities (which include three of the Company's
current markets), the Company delivers to Fibres' processing facilities all of
the Company's collected recyclable materials for which Fibres pays the market
rate (adjusted to reflect the Company's costs of transporting the materials to
Fibres or another processor) otherwise obtainable by the Company for such
materials. The Company received approximately $222,701 in gross revenues from
Fibres from the Company's inception through December 31, 1997. After deducting
the fees the Company paid to Fibres for the right to collect the recyclables,
the Company retained approximately $10,860. The Company made net payments of
$87,506 to Fibres for the nine-month period ending September 30, 1998.
 
MERGERS WITH THE MURREY COMPANIES.
 
The Company has entered into an agreement to merge with the Murrey Companies.
The merger is expected to be consummated in January 1999. Donald J. Hawkins is
the President, Chief Executive Officer and a 5% shareholder of the Murrey
Companies, and Irmgard R. Wilcox is the Chief Financial Officer, Treasurer,
Secretary and a 5% shareholder of the Murrey Companies. Mr. Hawkins and Ms.
Wilcox will receive shares of the Company's Common Stock in exchange for their
shares of the Murrey Companies. The Company will engage Mr. Hawkins as Vice
President -- Operations -- Northern Washington division and Ms. Wilcox as Vice
President -- Controller -- Northern Washington division, and each of Mr. Hawkins
and Ms. Wilcox will receive a $2,000,000 signing bonus pursuant to their
employment agreements with the Company. The Company has agreed to appoint a
representative of the shareholders of the Murrey Companies, which may be Mr.
Hawkins or Ms. Wilcox, to the Company's Board of Directors, upon the
consummation of the merger with the Murrey Companies.
 
                                       63
<PAGE>   66
 
                             PRINCIPAL STOCKHOLDERS
 
The following table shows the amount of the Company's Common Stock beneficially
owned, as of January 4, 1999, by: (i) each person or entity that the Company
knows owns more than 5% of the Company's Common Stock; (ii) Mr. Mittelstaedt and
each director of the Company; and (iii) all current directors and executive
officers of the Company as a group.
 
   
<TABLE>
<CAPTION>
              NAME OF BENEFICIAL OWNER(1)                  NUMBER      PERCENTAGE
              ---------------------------                 ---------    ----------
<S>                                                       <C>          <C>
James N. Cutler, Jr.(2)(3)..............................    977,322       10.2%
J. Bradford Bishop(2)(3)................................    916,607        9.6
Ronald J. Mittelstaedt(2)(4)............................  1,058,376       11.2
Frank W. Cutler(2)(3)...................................    672,246        7.0
Eugene V. Dupreau(2)(5).................................    402,000        4.3
Kieckhefer Partnership 84-1(2)..........................    562,104        6.0
Michael W. Harlan(2)(6).................................     20,000        0.2
William J. Razzouk(2)(7)................................     15,000        0.2
Eugene P. Polk(2)(8)....................................    749,470        8.1
All executive officers and directors as a group (10
  persons)..............................................  2,235,603       22.8
</TABLE>
    
 
- ---------------
(1) Beneficial ownership is determined in accordance with the rules of the
    Commission. In general, a person who has voting power and/or investment
    power with respect to securities is treated as the beneficial owner of those
    securities. Shares of Common Stock subject to options and/or warrants
    currently exercisable or exercisable within 60 days of the date of this
    Prospectus count as outstanding for computing the percentage beneficially
    owned by the person holding such options. Except as otherwise indicated by
    footnote, the Company believes that the persons named in this table have
    sole voting and investment power with respect to the shares of Common Stock
    shown.
 
(2) The address of Mr. Mittelstaedt is 2260 Douglas Boulevard, Suite 280,
    Roseville, California 95661. The address of J. Bradford Bishop and James N.
    Cutler, Jr. is 6950 S.W. Hampton Street, Suite 200, Portland, Oregon 97223.
    The address of Kieckhefer Partnership 84-1 and Eugene P. Polk is P.O. Box
    1151, Prescott, Arizona 86302. The address of Frank W. Cutler is 711 North
    Bayfront, Newport Beach, California 92662. The address of Eugene V. Dupreau
    is Madera Disposal Systems, Inc., 21739 Road 19, Chowchilla, California
    93610. The address of Michael W. Harlan is 2777 Allen Parkway, Suite 700,
    Houston, Texas 77019. The address of William J. Razzouk is 5915 River Oaks
    Road, Memphis, Tennessee 38120.
 
(3) Includes 247,000 shares purchasable under currently exercisable warrants.
 
(4) Includes 100,000 shares purchasable under currently exercisable warrants and
    33,333 shares purchasable under currently exercisable options. Also includes
    567,900 shares held by the Mittelstaedt Family Trust dated 6/18/97, of which
    Mr. Mittelstaedt is the Trustee.
 
(5) Includes 66,667 shares purchasable under immediately exercisable warrants
    and 5,000 shares purchasable under immediately exercisable options.
 
(6) Includes 5,000 shares purchasable under immediately exercisable warrants and
    15,000 shares purchasable under immediately exercisable options
 
(7) Includes 15,000 shares purchasable under immediately exercisable options.
 
                                       64
<PAGE>   67
 
(8) Includes 297,704 shares beneficially owned through three trusts for which
    Eugene Polk serves as a trustee (190,562 shares -- Eugene P. Polk and
    Barbara J. Polk Revocable Trust U/A 11/18/68; 53,571 shares -- Margaret T.
    Morris Trust U/A 5/1/67; and 53,571 shares -- Margaret T. Morris Trust U/A
    4/19/69); and 170,714 shares held by the Polk Investment Partnership 93-1,
    for which Eugene Polk serves as a Manager; and 281,052 shares held by
    Kieckhefer Trust Partnership, for which Eugene Polk serves as Manager.
 
                                       65
<PAGE>   68
 
                          DESCRIPTION OF CAPITAL STOCK
 
GENERAL
 
The authorized capital stock of the Company consists of 50,000,000 shares of
Common Stock, par value $0.01 per share, and 10,000,000 shares of Preferred
Stock, par value $0.01 per share (the "Preferred Stock"). As of January 4, 1999,
there were 9,314,290 shares of Common Stock outstanding and no shares of
Preferred Stock outstanding.
 
COMMON STOCK
 
The holders of shares of Common Stock are entitled to one vote per share held on
all matters submitted to a vote at a meeting of stockholders. Cumulative voting
for the election of directors is not permitted. Subject to any preferences to
which holders of Preferred Stock are entitled, the holders of outstanding shares
of Common Stock are entitled to receive ratably any dividends that the Board of
Directors declares. If the Company liquidates, dissolves or winds up, the
holders of shares of Common Stock are entitled to receive pro rata all assets of
the Company that are available for distribution to stockholders. The holders of
shares of Common Stock do not have any preemptive, subscription, redemption,
conversion or sinking fund rights. The outstanding shares of Common Stock, and
the shares of Common Stock to be issued pursuant to this Prospectus and any
Prospectus Supplement, are fully paid and nonassessable.
 
PREFERRED STOCK
 
The Company is authorized by its Amended and Restated Certificate of
Incorporation to issue a maximum of 10,000,000 shares of Preferred Stock, in one
or more series. The Board determines the rights, privileges and limitations of
Preferred Stock, including dividend rights, voting rights, conversion
privileges, redemption rights, liquidation rights and/or sinking fund rights.
Preferred Stock may be issued in the future in connection with acquisitions,
financings or such other matters as the Board of Directors believes appropriate.
There are no shares of Preferred Stock outstanding, and the Company has no
current plans to issue Preferred Stock.
 
One effect of having Preferred Stock authorized is that the Company's Board of
Directors alone may be able to authorize the issuance of Preferred Stock in ways
that render more difficult or discourage an attempt to obtain control of the
Company by a tender offer, proxy contest, merger or otherwise, and thereby
protect the continuity of the Company's management. The issuance of shares of
Preferred Stock may adversely affect the voting and other rights of holders of
Common Stock. For example, Preferred Stock may rank prior to the Common Stock as
to dividend rights, liquidation preferences or both, may have full or limited
voting rights and may be convertible into Common Stock. Accordingly, the
issuance of Preferred Stock may discourage bids for the Common Stock or
otherwise adversely affect the market price of the Common Stock.
 
CERTAIN STATUTORY, CHARTER AND BY-LAW PROVISIONS
 
Classified Board of Directors. The Company's Amended and Restated Certificate of
Incorporation (the "Restated Certificate") provides that the Board will be
divided into three classes serving staggered terms, and that the number of
directors in each class will be as nearly equal as is possible based on the
number of directors constituting the entire
 
                                       66
<PAGE>   69
 
Board. At each annual meeting of stockholders, successors to directors of the
class whose term expires at such meeting will be elected to serve for three-year
terms.
 
The classification of directors makes it more difficult for stockholders to
change the composition of the Board. At least two annual meetings of
stockholders, instead of one, will generally be required to change the majority
of the Board. This delay may help ensure that the Company's directors, if
confronted by a third party attempting to force a proxy contest, a tender or
exchange offer or other extraordinary corporate transaction, would have
sufficient time to review the proposal and available alternatives and to act in
what they believe to be the best interests of the stockholders. However, such
classification could also discourage a third party from initiating a proxy
contest, making a tender offer or otherwise attempting to obtain control of the
Company, even though such an attempt might benefit the Company and its
stockholders. The classification of the Board could thus make it more likely
that incumbent directors will retain their positions.
 
Number of Directors; Removal; Filling Vacancies. The Restated Certificate
provides that the number of directors will be fixed from time to time by a
majority of the directors then in office. In no event may there be less than
three or more than nine directors, unless approved by at least two-thirds of the
directors then in office. In addition, the Restated Certificate provides that
newly created directorships resulting from an increase in the authorized number
of directors, vacancies on the Board resulting from death, resignation,
retirement, disqualification or removal of directors or any other cause may be
filled only by the Board (and not by the stockholders unless there are no
directors in office), if a quorum is then in office and present, or by a
majority of the directors then in office, if less than a quorum is then in
office, or by the sole remaining director. Accordingly, the Board could prevent
any stockholder from enlarging the Board and filling the new directorships with
such stockholder's own nominees.
 
The Restated Certificate allows directors to be removed only for cause and only
on the affirmative vote of holders of at least 66 2/3% of the voting power of
all the then outstanding shares of stock entitled to vote generally in the
election of directors ("Voting Stock"), voting together as a single class.
 
The provisions of the Restated Certificate governing the number of directors,
their removal and the filling of vacancies may discourage a third party from
initiating a proxy contest, making a tender offer or otherwise attempting to
gain control of the Company, or attempting to change the composition or policies
of the Board, even though such attempts might benefit the Company or its
stockholders. These provisions of the Restated Certificate could thus increase
the likelihood that incumbent directors retain their positions.
 
Limitation on Special Meetings; No Stockholder Action by Written Consent. The
Restated Certificate and the Amended and Restated By-laws (the "Restated
By-laws") provide that: (i) only a majority of the Board of Directors or the
President or Chairman of the Board may call a special meeting of stockholders;
(ii) only matters stated in the notice of meeting or properly brought before the
meeting by or at the direction of the Board of Directors may be transacted at
the meeting; and (iii) stockholder action may be taken only at a duly called and
convened annual or special meeting of stockholders and may not be taken by
written consent. These provisions, taken together, prevent stockholders from
forcing consideration of stockholder proposals over the opposition of the Board,
except at an annual meeting.
 
                                       67
<PAGE>   70
 
Advance Notice Provisions for Stockholder Nominations and Stockholder
Proposals. The Restated By-laws establish an advance notice procedure for
stockholders to make nominations of candidates for election as director, or to
bring other business before an annual meeting of stockholders of the Company
(the "Stockholder Notice Procedure"). In general, only persons who are nominated
by or at the direction of the Board, any committee appointed by the Board, or by
a stockholder who has given timely written notice to the Secretary of the
Company, may be elected as directors. At an annual meeting, only business that
has been brought before the meeting by, or at the direction of, the Board, any
committee appointed by the Board, or by a stockholder who has given timely
written notice to the Secretary of the Company, may be conducted. To be timely,
notice of stockholder nominations or proposals to be made at an annual or
special meeting must be received by the Company not less than 60 days nor more
than 90 days before the scheduled date of the meeting (or, if less than 70 days'
notice or prior public disclosure of the date of the meeting is given, then the
15th day following the earlier of the day such notice was mailed or the day such
public disclosure was made).
 
By requiring advance notice of nominations by stockholders, the Stockholder
Notice Procedure gives the Board an opportunity to consider the qualifications
of the proposed nominees and inform stockholders about such qualifications. By
requiring advance notice of other proposed business, the Stockholder Notice
Procedure provides a more orderly procedure for conducting annual meetings of
stockholders. It also gives the Board an opportunity to inform stockholders in
advance of any business proposed to be conducted at such meetings, together with
the Board's recommendations regarding action to be taken with respect to such
business, so that stockholders can better decide whether to attend such a
meeting or to grant a proxy regarding the disposition of any such business.
 
Although the Restated By-laws do not give the Board any power to approve or
disapprove stockholder nominations for the election of directors or proposals
for action, the Stockholder Notice Procedure may preclude a contest for the
election of directors or the consideration of stockholder proposals. It may also
discourage or deter a third party from soliciting proxies to elect its own slate
of directors or to approve its own proposal, even though consideration of such
nominees or proposals might benefit the Company and its stockholders.
 
Certain Provisions Relating to Potential Change of Control. The Restated
Certificate authorizes the Board and any committee of the Board to take such
action as it determines to be reasonably necessary or desirable to encourage any
person or entity to enter into negotiations with the Board and management about
transactions that may result in a change of control of the Company. The Board
and its committees may also contest or oppose any such transaction that the
Board determines to be unfair, abusive or otherwise undesirable to the Company,
its business, assets, properties or stockholders. The Board or any Board
committee may adopt plans or to issue securities of the Company, and to
determine the terms and conditions on which such securities may be exchangeable
or convertible into cash or other securities. In addition, the Board or Board
committee may treat any holder or class of holders of such designated securities
differently than all other security holders in respect of the terms, conditions,
provisions and rights of such securities.
 
This authority is intended to give the Board flexibility to act in the best
interests of stockholders in the event of a potential change of control. Such
provisions may, however,
 
                                       68
<PAGE>   71
 
deter potential acquirors from proposing unsolicited transactions not approved
by the Board and might enable the Board to hinder or frustrate such a
transaction if proposed.
 
Limitation of Liability of Directors. The Restated Certificate provides that a
director will not be personally liable to the Company or its stockholders for
monetary damages for any breach of fiduciary duty as a director, except for
liability: (i) for any breach of the director's duty of loyalty to the
corporation or its stockholders; (ii) for acts or omissions not in good faith or
which involve intentional misconduct or a knowing violation of law; (iii) under
Section 174 of the Delaware General Corporation Law (the "Delaware Law"), which
concerns unlawful payments of dividends, stock purchases or redemptions; or (iv)
for any transaction from which the director derived an improper personal
benefit. If the Delaware Law is subsequently amended to permit further
limitation of the personal liability of directors, the liability of a director
of the Company will be eliminated or limited to the fullest extent permitted by
the Delaware Law as so amended.
 
Amendment of the Certificate of Incorporation and By-laws. The Restated
Certificate contains provisions requiring the affirmative vote of the holders of
at least 66 2/3% of the voting power of the Voting Stock to amend certain
provisions of the Restated Certificate (including the provisions discussed above
relating to the size and classification of the Board, replacement and/or removal
of Board members, action by written consent, special stockholder meetings, the
authorization for the Board to take steps to encourage or oppose, as the case
may be, transactions which may result in a change of control of the Company, and
limitation of the liability of directors) or to amend any provision of the
Restated By-laws by action of stockholders. These provisions make it more
difficult for stockholders to make changes in the Restated Certificate and the
Restated By-laws, including changes designed to facilitate the exercise of
control over the Company.
 
Business Combination Provisions of Delaware Law. The Company is a Delaware
corporation and is subject to section 203 of the Delaware Law. Section 203
generally prevents a person who, together with affiliates and associates, owns,
or within the past three years did own, 15% or more of the outstanding voting
stock of a corporation (an "Interested Stockholder") from engaging in certain
business combinations with the corporations for three years after the date such
person became an Interested Stockholder, subject to certain exceptions. Business
combinations covered by section 203 include a wide variety of transactions with
or caused by an Interested Stockholder, including mergers, asset sales and other
transactions in which the Interested Stockholder receives or could receive a
benefit on other than a pro rata basis with other stockholders.
 
TRANSFER AGENT AND REGISTRAR
 
BankBoston, N.A., c/o Boston EquiServe, L.P., serves as transfer agent and
registrar for the Common Stock.
 
                        SHARES ELIGIBLE FOR FUTURE SALE
 
As of January 4, 1999, the Company had 9,314,290 shares of Common Stock
outstanding. Of those shares, the 2,300,000 sold in the Company's initial public
offering and an additional 5,329,053 shares are freely saleable in the public
market, unless acquired by affiliates of the Company. An additional 1,000,000 of
the currently outstanding shares will become eligible for resale in the public
market in February 1999, an additional 635,237 of the currently outstanding
shares will become eligible for resale in the public market later
 
                                       69
<PAGE>   72
 
in 1999, and an additional 50,000 of the currently outstanding shares will
become eligible for resale in the public market ratably over three years, in
each case subject to the restrictions of Rule 144 promulgated under the
Securities Act. Shares of Common Stock held by affiliates of the Company are
subject to certain volume and other limitations discussed below under Rule 144.
 
In general, under Rule 144, a person (or persons whose shares are aggregated),
including persons who may be deemed affiliates of the Company, who has
beneficially owned his or her shares for at least one year may sell in any
three-month period a number of shares equal to the greater of 1% of the
outstanding shares of the Common Stock (93,142 shares as of January 4, 1999) or
the average weekly trading volume during the four calendar weeks preceding each
such sale. Sales under Rule 144 also are subject to certain manner of sale
provisions, notice requirements and the availability of current public
information about the Company. Under Rule 144(k), a person (or persons whose
shares are aggregated) who is not or has not been deemed an "affiliate" of the
Company for at least three months and who has beneficially owned his or her
shares for at least two years may sell such shares under Rule 144 without regard
to the limitations discussed above.
 
The Common Stock has been publicly traded only since May 22, 1998, and it is
possible that no active public market for the Common stock will develop or be
sustained. Sales of substantial amounts of the Common Stock, or the perception
that such sales could occur, could cause the market price of the Common Stock to
decline and impair the Company's ability to raise capital or fund acquisitions
by issuing Common Stock.
 
In July 1998, the Company filed a registration statement on Form S-4 under the
Securities Act to register up to 3,000,000 shares issuable from time to time in
connection with the Company's acquisitions of solid waste services businesses.
In October 1998, the Company filed an additional registration statement on Form
S-4 under the Securities Act to increase by 20% the number of shares covered by
the previous registration statement. Also in October 1998, the Company filed a
third registration statement on Form S-4 to register up to 3,000,000 shares
issuable from time to time in connection with acquisitions of solid waste
services businesses. As of January 4, 1999, the Company had issued 521,143
shares under the original registration statement on Form S-4, and an additional
6,123,022 shares were issuable under the three Form S-4 registration statements.
 
In September 1998, the Company filed a registration statement under the
Securities Act to register 309,700 shares issuable on exercise of stock options
or other awards granted or to be granted under its Stock Option Plan. Subject to
certain restrictions under Rule 144, those shares will be freely saleable in the
public market immediately following exercise of such options.
 
               OUTSTANDING SECURITIES COVERED BY THIS PROSPECTUS
 
Persons who receive shares of Common Stock covered by the Registration Statement
in acquisitions of businesses by the Company, or their transferees ("Selling
Stockholders"), may use this Prospectus and Post-Effective Amendments and
Prospectus Supplements to sell such shares.
 
The Company will not receive any of the proceeds from any such sales. Any
commissions paid or concessions allowed to any broker-dealer and, if any
broker-dealer purchases such shares as principal, any profits received on the
resale of such shares, may be deemed to be
 
                                       70
<PAGE>   73
 
underwriting discounts and commissions under the Securities Act. The Company
will pay printing, certain legal, filing and other similar expenses of this
offering. Selling Stockholders will bear all other expenses of this offering,
including any brokerage fees, underwriting discounts or commissions.
 
If a Selling Stockholder notifies the Company of an arrangement with a
broker-dealer to sell shares through a block trade, special offering, exchange
distribution or secondary distribution, the Company will file a Prospectus
Supplement pursuant to Rule 424 under the Securities Act. The Prospectus
Supplement will set forth (i) the name of such Selling Stockholder and the
participating broker-dealer, (ii) the number of shares involved, (iii) the price
at which such shares were sold, (iv) the commissions paid or discounts or
concessions allowed to such broker-dealer, where applicable, (v) that such
broker-dealer did not conduct any investigation to verify the information set
out in this Prospectus, and (vi) other facts material to the transaction.
 
Selling Stockholders may sell the shares being offered through this Prospectus
in transactions on the Nasdaq National Market or on a securities exchange on
which the Company's Common Stock may then be listed, in negotiated transactions
or otherwise, at market prices or at negotiated prices. Selling Stockholders may
sell the shares in transactions involving broker-dealers, who may act as agents
and/or acquire shares as principals. Broker-dealers who participate in such
transactions as agents may receive commissions from Selling Stockholders (and,
if they act as agents for the purchasers of such shares, from such purchasers).
Participating broker-dealers may agree with Selling Stockholders to sell a
specified number of shares at a stipulated price per share and, to the extent
they are unable to do so acting as agents for the Selling Stockholders, to
purchase as principals any unsold shares at the price required to fulfill their
commitments to the Selling Stockholders.
 
The Selling Stockholders may also sell shares by or through other broker-dealers
in special offerings, exchange distributions or secondary distributions pursuant
to the rules of the Nasdaq National Market or on a securities exchange on which
the Company's Common Stock may then be listed. They may pay commissions in
excess of the customary commission prescribed by the rules of such securities
exchange to participating broker-dealers. In certain secondary distributions, a
discount or concession from the offering price may be allowed to participating
broker-dealers in excess of such customary commission. Broker-dealers who
acquire shares as principals may subsequently resell such shares in transactions
(which may involve crosses and block transactions and which may involve sales to
and through other broker-dealers) on the Nasdaq National Market or on a
securities exchange on which the Company's Common Stock may then be listed, in
negotiated transactions or otherwise, at market prices or at negotiated prices.
In connection with such resales, the broker-dealers may pay to or receive
commissions from the purchasers of such shares.
 
Each Selling Stockholder may indemnify any broker-dealer that participates in
transactions involving sales of the shares against certain liabilities,
including liabilities arising under the Securities Act.
 
                                 LEGAL MATTERS
 
The validity of the issuance of the shares of Common Stock offered hereby will
be passed upon for the Company by Shartsis, Friese & Ginsburg LLP, San
Francisco, California.
 
                                       71
<PAGE>   74
 
The statements pertaining to the Company's G certificates awarded by the WUTC
under "Risk Factors -- Highly Competitive Industry," "Management's Discussion
and Analysis of Financial Condition and Results of Operations -- General,"
"Business -- Industry Overview," and "Business -- G Certificates" will be passed
upon for the Company by Williams, Kastner & Gibbs PLLC, Seattle, Washington.
 
                                    EXPERTS
 
The following financial statements appearing in this Prospectus and Registration
Statement have been audited by Ernst & Young LLP, independent auditors, as set
forth in their reports thereon appearing elsewhere in this Prospectus and
Registration Statement:
 
          (a) financial statements of Waste Connections, Inc. and Predecessors
     as of December 31, 1996 and 1997, and for each of the three years in the
     period ended December 31, 1997;
 
          (b) combined financial statements of The Murrey Companies (which
     consist of Murrey's Disposal Company, Inc., American Disposal Company,
     Inc., D.M. Disposal Co., Inc. and Tacoma Recycling Company, Inc.) as of
     December 31, 1996 and 1997, and for each of the three years in the period
     ended December 31, 1997;
 
          (c) financial statements of Madera Disposal Systems, Inc. as of
     December 31, 1996 and 1997, and for each of the three years in the period
     ended December 31, 1997;
 
          (d) financial statements of Arrow Sanitary Service, Inc. as of
     September 30, 1997, and for the year then ended;
 
          (e) financial statements of Contractors Waste Removal, L.C. as of
     December 31, 1997, and for the year then ended;
 
          (f) consolidated financial statements of Curry Transfer and Recycling,
     Inc. as of December 31, 1997 and for the year then ended; and
 
          (g) combined financial statements of Butler County Landfill, Inc. and
     Kobus Construction, Inc. as of December 31, 1997 and for the year then
     ended.
 
Such financial statements have been included in this Prospectus and Registration
Statement in reliance upon such reports given upon the authority of such firm as
experts in accounting and auditing.
 
The following financial statements appearing in this Prospectus and Registration
Statement have been audited by Grant Thornton LLP, independent auditors, as set
forth in their reports thereon appearing elsewhere in this Prospectus and
Registration Statement:
 
          (a) financial statements of Shrader Refuse and Recycling Service
     Company as of September 30, 1996 and 1997, and for the years then ended;
 
          (b) combined financial statements of B&B Sanitation (consisting of B&B
     Sanitation, Inc., Red Carpet Landfill, Inc. and Darlin Equipment, Inc.) as
     of December 31, 1997, and for the year then ended; and
 
          (c) combined financial statements of J&J Sanitation (consisting of J&J
     Sanitation, Inc., Big Red Roll Off, Inc., and J&J Sanitation of South
     Dakota) as of December 31, 1997, and for the year then ended.
 
                                       72
<PAGE>   75
 
Such financial statements have been included in this Prospectus and Registration
Statement in reliance upon such reports given upon the authority of such firm as
experts in accounting and auditing.
 
The combined financial statements of Amador Disposal Service, Inc. and Mother
Lode Sani-Hut, Inc. at June 30, 1998 and for the year then ended appearing in
this Prospectus and Registration Statement have been audited by
PricewaterhouseCoopers LLP, independent auditors, as set forth in their report
thereon appearing elsewhere in this Prospectus and Registration Statement, and
are included in reliance upon such report given upon the authority of such firm
as experts in accounting and auditing.
 
                                       73
<PAGE>   76
 
                         INDEX TO FINANCIAL STATEMENTS
 
<TABLE>
<CAPTION>
                                                              PAGE
                                                              -----
<S>                                                           <C>
WASTE CONNECTIONS, INC. UNAUDITED PRO FORMA FINANCIAL
  STATEMENTS
  Introduction to Unaudited Pro Forma Consolidated Financial
     Statements.............................................    F-4
  Unaudited Pro Forma Statement of Operations for the year
     ended December 31, 1997................................    F-5
  Unaudited Pro Forma Statement of Operations for the nine
     months ended September 30, 1998........................    F-6
  Notes to Unaudited Pro Forma Statements of Operations.....    F-7
  Unaudited Pro Forma Balance Sheet as of September 30,
     1998...................................................   F-12
  Notes to Unaudited Pro Forma Consolidated Balance Sheet...   F-13
 
WASTE CONNECTIONS, INC. AND PREDECESSORS
  Report of Ernst & Young LLP, Independent Auditors.........   F-14
  Combined Balance Sheet of Predecessors as of December 31,
     1996...................................................   F-15
  Consolidated Balance Sheet of Waste Connections, Inc. as
     of December 31, 1997 (Audited) and September 30, 1998
     (Unaudited)............................................   F-15
  Combined Statement of Operations of Predecessors for the
     nine months ended September 30, 1997...................   F-16
  Consolidated Statement of Operations of Waste Connections,
     Inc. for the period from inception (September 9, 1997)
     through December 31, 1997 (Audited) and the nine months
     ended September 30, 1998 (Unaudited)...................   F-16
  Combined Statement of Operations of The Disposal Group for
     the period from January 1, 1996 through July 31,
     1996...................................................   F-17
  Combined Statement of Operations of Predecessors for the
     period ended December 31, 1996.........................   F-17
  Combined Statement of Operations of The Disposal Group for
     the year ended December 31, 1995.......................   F-18
  Statement of Operations of Fibres International, Inc. for
     the period from January 1, 1995 through November 30,
     1995...................................................   F-18
  Statement of Operations of Predecessors for the one month
     ended December 31, 1995................................   F-18
  Consolidated Statement of Redeemable Stock and
     Stockholders' Equity (Deficit) of Waste Connections,
     Inc. for the period from inception (September 9, 1997)
     through December 31, 1997 (Audited) and the nine months
     ended September 30, 1998 (Unaudited)...................   F-19
  Combined Statement of Cash Flows of Predecessors for the
     nine months ended September 30, 1997...................   F-20
  Consolidated Statement of Cash Flows of Waste Connections,
     Inc. for the period from inception (September 9, 1997)
     through December 31, 1997 (Audited) and the nine months
     ended September 30, 1998 (Unaudited)...................   F-20
  Combined Statement of Cash Flows of The Disposal Group for
     the period from January 1, 1996 through July 31,
     1996...................................................   F-21
  Combined Statement of Cash Flows of Predecessors for the
     period ended December 31, 1996.........................   F-21
  Combined Statement of Cash Flows of The Disposal Group for
     the year ended December 31, 1995.......................   F-22
  Statement of Cash Flows of Fibres International, Inc. for
     the period from January 1, 1995 through November 30,
     1995...................................................   F-22
  Statement of Cash Flows of Predecessors for the one month
     ended December 31, 1995................................   F-22
  Notes to Financial Statements.............................   F-23
</TABLE>
 
                                       F-1
<PAGE>   77
 
<TABLE>
<CAPTION>
                                                              PAGE
                                                              -----
<S>                                                           <C>
THE MURREY COMPANIES
  Report of Ernst & Young LLP, Independent Auditors.........   F-44
  Combined Balance Sheets as of December 31, 1996 and 1997
     (Audited) and September 30, 1998 (Unaudited)...........   F-45
  Combined Statements of Income and Retained Earnings for
     the years ended December 31, 1995, 1996 and 1997
     (Audited) and for the nine months ended September 30,
     1997 and 1998 (Unaudited)..............................   F-46
  Combined Statements of Cash Flows for the years ended
     December 31, 1995, 1996 and 1997 (Audited) and for the
     nine months ended September 30, 1997 and 1998
     (Unaudited)............................................   F-47
  Notes to Combined Financial Statements....................   F-48
 
MADERA DISPOSAL SYSTEMS, INC.
  Report of Ernst & Young LLP, Independent Auditors.........   F-57
  Balance Sheets as of December 31, 1996 and 1997...........   F-58
  Statements of Income and Retained Earnings for the years
     ended December 31, 1995, 1996 and 1997.................   F-59
  Statements of Cash Flows for the years ended December 31,
     1995, 1996 and 1997....................................   F-60
  Notes to Financial Statements.............................   F-61
 
ARROW SANITARY SERVICE, INC.
  Report of Ernst & Young LLP, Independent Auditors.........   F-67
  Balance Sheets as of September 30, 1997 (Audited) and
     March 31, 1998 (Unaudited).............................   F-68
  Statements of Income and Retained Earnings for the year
     ended September 30, 1997 (Audited) and the six months
     ended March 31, 1997 and 1998 (Unaudited)..............   F-69
  Statements of Cash Flows for the year ended September 30,
     1997 (Audited) and the six months ended March 31, 1997
     and 1998 (Unaudited)...................................   F-70
  Notes to Financial Statements.............................   F-71
 
SHRADER REFUSE AND RECYCLING SERVICE COMPANY
  Report of Grant Thornton LLP, Independent Auditors........   F-77
  Balance Sheets as of September 30, 1996 and 1997 (Audited)
     and June 30, 1998 (Unaudited)..........................   F-78
  Statements of Income for the years ended September 30,
     1996 and 1997 (Audited) and the nine months ended June
     30, 1997 and 1998 (Unaudited)..........................   F-79
  Statement of Stockholders Equity for the years ended
     September 30, 1996 and 1997 (Audited) and the nine
     months ended June 30, 1998 (Unaudited).................   F-80
  Statements of Cash Flows for the years ended September 30,
     1996 and 1997 (Audited) and the nine months ended June
     30, 1997 and 1998 (Unaudited)..........................   F-81
  Notes to Financial Statements.............................   F-82
 
CONTRACTOR'S WASTE REMOVAL, L.C.
  Report of Ernst & Young LLP, Independent Auditors.........   F-89
  Balance Sheets as of December 31, 1997 (Audited) and March
     31, 1998 (Unaudited)...................................   F-90
  Statements of Operations and Change in Members' Deficit
     for the year ended December 31, 1997 (Audited) and the
     three months ended March 31, 1997 and 1998
     (Unaudited)............................................   F-91
  Statements of Cash Flows for the year ended December 31,
     1997 (Audited) and the three months ended March 31,
     1997 and 1998 (Unaudited)..............................   F-92
  Notes to Financial Statements.............................   F-93
</TABLE>
 
                                       F-2
<PAGE>   78
 
<TABLE>
<CAPTION>
                                                              PAGE
                                                              -----
<S>                                                           <C>
CURRY TRANSFER AND RECYCLING, INC.
  Report of Ernst & Young LLP, Independent Auditors.........   F-97
  Consolidated Balance Sheets as of December 31, 1997
     (Audited) and March 31, 1998 (Unaudited)...............   F-98
  Consolidated Statements of Income and Retained Earnings
     for the year ended December 31, 1997 (Audited) and the
     three months ended March 31, 1997 and 1998
     (Unaudited)............................................   F-99
  Consolidated Statements of Cash Flows for the year ended
     December 31, 1997 (Audited) and the three months ended
     March 31, 1997 and 1998 (Unaudited)....................  F-100
  Notes to Consolidated Financial Statements................  F-101
 
B&B SANITATION
  Report of Grant Thornton, LLP, Independent Auditors.......  F-108
  Combined Balance Sheets as of December 31, 1997 (Audited)
     and March 31, 1998 (Unaudited).........................  F-109
  Combined Statements of Earnings for the year ended
     December 31, 1997 (Audited) and the three months ended
     March 31, 1997 and 1998 (Unaudited)....................  F-110
  Combined Statement of Stockholders' Deficit for the year
     ended December 31, 1997 (Audited) and the three months
     ended March 31, 1998 (Unaudited).......................  F-111
  Combined Statements of Cash Flows for the year ended
     December 31, 1997 (Audited) and the three months ended
     March 31, 1997 and 1998 (Unaudited)....................  F-112
  Notes to Combined Financial Statements....................  F-113
 
J & J SANITATION
  Report of Grant Thornton LLP, Independent Auditors........  F-117
  Combined Balance Sheets as of December 31, 1997 (Audited)
     and June 30, 1998 (Unaudited)..........................  F-118
  Combined Statements of Operations for the year ended
     December 31, 1997 (Audited) and the six months ended
     June 30, 1997 and 1998 (Unaudited).....................  F-119
  Combined Statement of Stockholders' and Partners' Equity
     for the year ended December 31, 1997 (Audited) and the
     six months ended June 30, 1998 (Unaudited).............  F-120
  Combined Statements of Cash Flows for the year ended
     December 31, 1997 (Audited) and the six months ended
     June 30, 1997 and 1998 (Unaudited).....................  F-121
  Notes to Combined Financial Statements....................  F-122
 
AMADOR DISPOSAL SERVICES, INC. AND MOTHERLODE SANI-HUT, INC.
  Report of PricewaterhouseCoopers LLP, Independent
     Auditors...............................................  F-127
  Combined Balance Sheets as of June 30, 1998, (Audited) and
     September 30, 1998 (Unaudited).........................  F-128
  Combined Statements of Operations and Retained Earnings
     for the year ended June 30, 1998 (Audited) and the
     three months ended September 30, 1997 and 1998
     (Unaudited)............................................  F-129
  Combined Statements of Cash Flows for the year ended June
     30, 1998 (Audited) and the three months ended September
     30, 1997 and 1998 (Unaudited)..........................  F-130
  Notes to Combined Financial Statements....................  F-131
 
BUTLER COUNTY LANDFILL, INC. AND KOBUS CONSTRUCTION, INC.
  Report of Ernst & Young LLP, Independent Auditors.........  F-136
  Combined Balance Sheets as of December 31, 1997 (Audited)
     and September 30, 1998 (Unaudited).....................  F-137
  Combined Statements of Income and Retained Earnings for
     the year ended December 31, 1997 (Audited) and the nine
     months ended September 30, 1997 and 1998 (Unaudited)...  F-138
  Combined Statements of Cash Flows for the year ended
     December 31, 1997 (Audited) and the nine months ended
     September 30, 1997 and 1998 (Unaudited)................  F-139
  Notes to Combined Financial Statements....................  F-140
</TABLE>
 
                                       F-3
<PAGE>   79
 
                            WASTE CONNECTIONS, INC.
 
                      INTRODUCTION TO UNAUDITED PRO FORMA
                       CONSOLIDATED FINANCIAL STATEMENTS
 
     The Unaudited Pro Forma Statements of Operations for the year ended
December 31, 1997 and the nine months ended September 30, 1998, give effect to
the business combinations involving WCI, its predecessors, Madera Disposal
Systems, Inc. ("Madera"), Arrow Sanitary Service, Inc. ("Arrow"), Shrader Refuse
and Recycling Service Company ("Shrader"), Curry Transfer and Recycling, Inc.
("Curry"), Contractors Waste Removal L.C. ("Contractors"), J & J Sanitation ("J
& J"), B&B Sanitation ("B&B"), Amador Disposal Service, Inc./Mother Lode
Sani-Hut, Inc. ("Amador"), and pending business combination involving Butler
County Landfill, Inc./Kobus Construction, Inc. ("Butler") as if such business
combinations occurred on January 1, 1997 and were accounted for using the
purchase method of accounting. In addition to reflecting the business
combinations involving WCI, its predecessors, Madera, Arrow, Shrader, Curry,
Contractors, J & J, B & B, Amador and Butler, the following Unaudited WCI and
the Murrey Companies Pro Forma Combined Statements of Operations for the year
ended December 31, 1997 and the nine months ended September 30, 1998 reflect the
merger with the Murrey Companies as poolings-of-interests.
 
     The following Unaudited Pro Forma Balance Sheet as of September 30, 1998
assumes WCI's acquisition of Amador and pending acquisition of Butler occurred
on September 30, 1998. In addition to reflecting the business combinations
involving WCI, Amador and Butler, the following Unaudited Pro Forma Combined
Balance Sheet as of September 30, 1998 reflects the mergers with the Murrey
Companies as poolings-of-interests.
 
     WCI has preliminarily analyzed the savings that it expects to be realized
by consolidating certain operational and general and administrative functions.
WCI has not and cannot quantify all of these savings due to the short period of
time since the predecessor, Madera, Arrow, Shrader, Curry, Contractors, J & J,
B&B, Amador and Butler acquisitions occurred. It is anticipated that these
savings will be partially offset by the costs of being a publicly held company
and the incremental increase in costs related to WCI's corporate management.
However, these costs, like the savings they offset, cannot be quantified
accurately. Neither the anticipated savings nor the anticipated costs have been
included in the Unaudited Pro Forma Financial Statements.
 
     The Unaudited Pro Forma Financial Statements include certain adjustments to
the historical financial statements, including adjusting depreciation expense to
reflect purchase price allocations of the entities acquired by WCI, adjusting
interest expense to reflect acquisition-related debt and the related income tax
effects of these adjustments.
 
     The pro forma adjustments are based on preliminary estimates, available
information and certain assumptions and may be revised as additional information
becomes available. The Unaudited Pro Forma Financial Statements do not purport
to represent what WCI's financial position or results of operations would
actually have been if such transactions in fact had occurred on those dates or
to project WCI's financial position or results of operations for any future
period. Because WCI, its predecessors, the Murrey Companies, Madera, Arrow,
Shrader, Curry, Contractors, J & J, B&B, Amador and Butler were not under common
control or management for all periods, historical combined results may not be
comparable to, or indicative of, future performance. The Unaudited Pro Forma
Financial Statements should be read in conjunction with the other financial
statements and notes thereto included elsewhere herein, as well as information
included under the headings "Selected Financial Data," "Management's Discussion
and Analysis of Financial Condition and Results of Operations" and "Risk
Factors" included elsewhere herein.
 
                                       F-4
<PAGE>   80
 
                            WASTE CONNECTIONS, INC.
 
                  UNAUDITED PRO FORMA STATEMENT OF OPERATIONS
                          YEAR ENDED DECEMBER 31, 1997
               (IN THOUSANDS, EXCEPT SHARE AND PER SHARE AMOUNTS)
   
<TABLE>
<CAPTION>
                                                             WASTE
                                                         CONNECTIONS,
                                                             INC.                                            ARROW
                                                          PERIOD FROM                       MADERA         SANITARY
                                                           INCEPTION     PREDECESSORS      DISPOSAL      SERVICE, INC.
                                                         (SEPTEMBER 9,   COMBINED NINE   SYSTEMS, INC.       YEAR
                                                           1997) TO      MONTHS ENDED     YEAR ENDED         ENDED
                                                         DECEMBER 31,    SEPTEMBER 30,   DECEMBER 31,    SEPTEMBER 30,
                                                             1997            1997            1997            1997
                                                         -------------   -------------   -------------   -------------
<S>                                                      <C>             <C>             <C>             <C>
Revenues...............................................    $   6,237        $18,114         $ 7,845         $6,209
Operating expenses:
 Cost of operations....................................        4,703         14,753           5,289          4,970
 Selling, general and administrative...................          619          3,009           1,041            776
 Depreciation and amortization.........................          354          1,083             627            143
 Start-up and integration..............................          493             --              --             --
 Stock compensation....................................        4,395             --              --             --
                                                           ---------        -------         -------         ------
Income (loss) from operations..........................       (4,327)          (731)            888            320
Interest expense.......................................       (1,035)          (456)           (280)           (72)
Other income (expense), net............................          (36)            14             173             (2)
                                                           ---------        -------         -------         ------
Income (loss) before (provision) benefit for income
 taxes.................................................       (5,398)        (1,173)            781            246
(Provision) benefit for income taxes...................          332             --              --           (117)
                                                           ---------        -------         -------         ------
Net income (loss)......................................    $  (5,066)       $(1,173)        $   781         $  129
                                                           =========        =======         =======         ======
Redeemable convertible preferred stock accretion.......    $    (531)
                                                           ---------
Net loss applicable to common
 stockholders..........................................    $  (5,597)
                                                           =========
Basic and diluted net loss per common share............    $   (2.99)
                                                           =========
Shares used in the per share calculation...............    1,872,567
                                                           =========
 
<CAPTION>
 
                                                            SHRADER         CURRY
                                                          REFUSE AND       TRANSFER     CONTRACTORS
                                                           RECYCLING         AND           WASTE          J & J           B&B
                                                            SERVICE       RECYCLING,      REMOVAL,      SANITATION     SANITATION
                                                            COMPANY          INC.           L.C.         COMBINED       COMBINED
                                                          YEAR ENDED      YEAR ENDED     YEAR ENDED     YEAR ENDED     YEAR ENDED
                                                         SEPTEMBER 30,   DECEMBER 31,   DECEMBER 31,   DECEMBER 31,   DECEMBER 31,
                                                             1997            1997           1997           1997           1997
                                                         -------------   ------------   ------------   ------------   ------------
<S>                                                      <C>             <C>            <C>            <C>            <C>
Revenues...............................................     $6,896          $3,617         $1,903         $2,346         $1,965
Operating expenses:
 Cost of operations....................................      4,601           2,259          1,234          1,789          1,074
 Selling, general and administrative...................        567             655            359            319
 Depreciation and amortization.........................        770             260            202            197            259
 Start-up and integration..............................         --
 Stock compensation....................................         --
                                                            ------          ------         ------         ------         ------
Income (loss) from operations..........................        958             443            108             41            312
Interest expense.......................................       (292)            (50)          (178)          (108)          (108)
Other income (expense), net............................         59              64             --             --              1
                                                            ------          ------         ------         ------         ------
Income (loss) before (provision) benefit for income
 taxes.................................................        725             457            (70)           (67)           205
(Provision) benefit for income taxes...................                       (183)            --             --             --
                                                            ------          ------         ------         ------         ------
Net income (loss)......................................     $  725          $  274         $  (70)        $  (67)        $  205
                                                            ======          ======         ======         ======         ======
Redeemable convertible preferred stock accretion.......
Net loss applicable to common
 stockholders..........................................
Basic and diluted net loss per common share............
Shares used in the per share calculation...............
 
<CAPTION>
 
                                                            AMADOR           BUTLER
                                                           DISPOSAL          COUNTY
                                                         SERVICE, INC.   LANDFILL, INC.
                                                           COMBINED         COMBINED                       PRO FORMA
                                                          YEAR ENDED       YEAR ENDED                      YEAR ENDED
                                                         DECEMBER 31,     DECEMBER 31,     PRO FORMA      DECEMBER 31,
                                                             1997             1997        ADJUSTMENTS         1997
                                                         -------------   --------------   -----------     ------------
<S>                                                      <C>             <C>              <C>             <C>
Revenues...............................................     $3,205           $3,010         $    --        $   61,347
Operating expenses:
 Cost of operations....................................      2,432            1,898            (146)(a)        44,561
                                                                                               (195)(b)
                                                                                               (100)(c)
 Selling, general and administrative...................        480              236            (570)(d)         7,412
                                                                                               (132)(e)
                                                                                               (267)(j)
 Depreciation and amortization.........................        317              631            (102)(f)         4,339
                                                                                             (2,022)(k)
                                                                                              1,620(l)
 Start-up and integration..............................         --               --              --               493
 Stock compensation....................................         --               --              --             4,395
                                                            ------           ------         -------        ----------
Income (loss) from operations..........................        (24)             245           1,914               147
Interest expense.......................................        (77)            (180)            456(g)         (6,049)
                                                                                               (218)(g)
                                                                                              1,345(m)
                                                                                             (4,796)(n)
Other income (expense), net............................         (3)              43              --               313
                                                            ------           ------         -------        ----------
Income (loss) before (provision) benefit for income
 taxes.................................................       (104)             108          (1,299)           (5,589)
(Provision) benefit for income taxes...................         (2)              --             (92)(h)           402
                                                                                               (618)(o)
                                                                                              1,082(l)
                                                            ------           ------         -------        ----------
Net income (loss)......................................     $ (106)          $  108         $  (927)       $   (5,187)
                                                            ======           ======         =======        ==========
Redeemable convertible preferred stock accretion.......                                                          (531)
                                                                                                           ----------
Net loss applicable to common
 stockholders..........................................                                                    $   (5,718)
                                                                                                           ==========
Basic and diluted net loss per common share............                                                    $    (2.12)
                                                                                                           ==========
Shares used in the per share calculation...............                                                     2,700,306
                                                                                                           ==========
 
<CAPTION>
 
                                                          THE MURREY     PRO FORMA
                                                          COMPANIES       COMBINED
                                                          YEAR ENDED     YEAR ENDED
                                                         DECEMBER 31,   DECEMBER 31,
                                                             1997           1997
                                                         ------------   ------------
<S>                                                      <C>            <C>
Revenues...............................................    $28,874       $   90,221
Operating expenses:
 Cost of operations....................................     23,133           67,694
 Selling, general and administrative...................      2,323            9,735
 Depreciation and amortization.........................      1,371            5,710
 Start-up and integration..............................         --              493
 Stock compensation....................................         --            4,395
                                                           -------       ----------
Income (loss) from operations..........................      2,047            2,194
Interest expense.......................................       (380)          (6,429)
Other income (expense), net............................        283              596
                                                           -------       ----------
Income (loss) before (provision) benefit for income
 taxes.................................................      1,950           (3,639)
(Provision) benefit for income taxes...................       (634)            (232)
                                                           -------       ----------
Net income (loss)......................................    $ 1,316       $   (3,871)
                                                           =======       ==========
Redeemable convertible preferred stock accretion.......                        (531)
                                                                         ----------
Net loss applicable to common
 stockholders..........................................                  $   (4,402)
                                                                         ==========
Basic and diluted net loss per common share............                  $    (0.81)
                                                                         ==========
Shares used in the per share calculation...............                   5,450,306
                                                                         ==========
</TABLE>
    
 
                            See accompanying notes.
 
                                       F-5
<PAGE>   81
 
                            WASTE CONNECTIONS, INC.
 
                  UNAUDITED PRO FORMA STATEMENT OF OPERATIONS
                      NINE MONTHS ENDED SEPTEMBER 30, 1998
               (IN THOUSANDS, EXCEPT SHARE AND PER SHARE AMOUNTS)
   
<TABLE>
<CAPTION>
                                                                                                               CURRY
                                                                                                             TRANSFER
                                             WASTE            MADERA           ARROW       SHRADER REFUSE       AND
                                         CONNECTIONS,        DISPOSAL        SANITARY      AND RECYCLING    RECYCLING,
                                       INC. CONSOLIDATED   SYSTEMS, INC.   SERVICE, INC.      SERVICE          INC.
                                          NINE MONTHS        ONE MONTH      FIVE MONTHS       COMPANY       FIVE MONTHS
                                             ENDED             ENDED           ENDED         SIX MONTHS        ENDED
                                         SEPTEMBER 30,      JANUARY 31,       MAY 31,          ENDED          MAY 31,
                                             1998              1998            1998        JUNE 30, 1998       1998
                                       -----------------   -------------   -------------   --------------   -----------
<S>                                    <C>                 <C>             <C>             <C>              <C>
Revenues.............................      $  35,336           $ 611          $2,508           $3,505         $1,408
Operating expenses:
 Cost of operations..................         24,007             412           1,836            2,264            837
 Selling, general and
   administrative....................          3,518             112             385              310            270
 Depreciation and amortization.......          2,693              69              67              471            124
 Stock compensation..................            561              --              --               --             --
                                           ---------           -----          ------           ------         ------
Income (loss) from operations........          4,557              18             220              460            177
Interest expense.....................         (1,427)           (289)            (14)            (191)           (33)
Other income, net....................             --              16               2               11             41
                                           ---------           -----          ------           ------         ------
Income (loss) before (provision)
 benefit for income taxes............          3,130            (255)            208              280            185
(Provision) benefit for income
 taxes...............................         (1,513)             --             (89)              --             --
                                           ---------           -----          ------           ------         ------
Income (loss) before extraordinary
 item................................          1,617           $(255)         $  119           $  280         $  185
                                                               =====          ======           ======         ======
Extraordinary Item -- early
 extinguishment of debt, net of tax
 benefit of $165.....................           (815)
                                           ---------
Net income (loss)....................      $     802
                                           =========
Redeemable convertible preferred
 stock accretion.....................      $    (917)
                                           ---------
Net income (loss) applicable to
 common stockholders.................      $    (115)
                                           =========
Basic earnings (loss) per common
 share:
Income (loss) before extraordinary
 item................................      $    0.13
                                           =========
Extraordinary item...................          (0.15)
                                           =========
Basic net income (loss) per common
 share...............................      $   (0.02)
                                           =========
Diluted earnings (loss) per common
 share:
Income (loss) before extraordinary
 item................................      $    0.09
                                           =========
Extraordinary item...................          (0.11)
                                           ---------
Diluted net loss per common share....      $   (0.02)
                                           =========
Shares used in the per share
 calculations:
 Basic...............................      5,476,532
                                           =========
 Diluted.............................      7,438,658
                                           =========
 
<CAPTION>
 
                                       CONTRACTORS                                  AMADOR           BUTLER
                                          WASTE         J & J          B&B         DISPOSAL          COUNTY
                                         REMOVAL     SANITATION    SANITATION    SERVICE, INC    LANDFILL, INC.
                                          L.C.        COMBINED      COMBINED       COMBINED         COMBINED
                                       FIVE MONTHS   SIX MONTHS    FIVE MONTHS    NINE MONTHS     NINE MONTHS
                                          ENDED         ENDED         ENDED          ENDED           ENDED
                                         MAY 31,      JUNE 30,       MAY 31,     SEPTEMBER 30,   SEPTEMBER 30,     PRO FORMA
                                          1998          1998          1998           1998             1998        ADJUSTMENTS
                                       -----------   -----------   -----------   -------------   --------------   -----------
<S>                                    <C>           <C>           <C>           <C>             <C>              <C>
Revenues.............................     $ 791        $1,210         $876          $2,355           $2,419         $    --
Operating expenses:
 Cost of operations..................       543           854          464           1,642            1,659              --
 Selling, general and
   administrative....................       182           213          136             400              130            (111)(j)
 Depreciation and amortization.......        94           107          110             229              408            (334)(l)
 Stock compensation..................        --            --           --              --               --              --
                                          -----        ------         ----          ------           ------         -------
Income (loss) from operations........       (28)           36          166              84              222             445
Interest expense.....................       (90)          (53)         (46)            (88)            (109)            624(m)
                                                                                                                     (2,146)(n)
Other income, net....................        --            --           --             (22)             109              --
                                          -----        ------         ----          ------           ------         -------
Income (loss) before (provision)
 benefit for income taxes............      (118)          (17)         120             (26)             222          (1,077)
(Provision) benefit for income
 taxes...............................        --            --           --              (1)                             358(o)
                                          -----        ------         ----          ------           ------         -------
Income (loss) before extraordinary
 item................................     $(118)       $  (17)        $120          $  (27)          $  222         $  (719)
                                          =====        ======         ====          ======           ======         =======
Extraordinary Item -- early
 extinguishment of debt, net of tax
 benefit of $165.....................
Net income (loss)....................
Redeemable convertible preferred
 stock accretion.....................
Net income (loss) applicable to
 common stockholders.................
Basic earnings (loss) per common
 share:
Income (loss) before extraordinary
 item................................
Extraordinary item...................
Basic net income (loss) per common
 share...............................
Diluted earnings (loss) per common
 share:
Income (loss) before extraordinary
 item................................
Extraordinary item...................
Diluted net loss per common share....
Shares used in the per share
 calculations:
 Basic...............................
 Diluted.............................
 
<CAPTION>
 
                                                        THE MURREY       PRO FORMA
                                         PRO FORMA       COMPANIES       COMBINED
                                        NINE MONTHS     NINE MONTHS     NINE MONTHS
                                           ENDED           ENDED           ENDED
                                       SEPTEMBER 30,   SEPTEMBER 30,   SEPTEMBER 30,
                                           1998            1998            1998
                                       -------------   -------------   -------------
<S>                                    <C>             <C>             <C>
Revenues.............................   $   51,019        $24,532       $    75,551
Operating expenses:
 Cost of operations..................       34,518         19,337            53,855
 Selling, general and
   administrative....................        5,545          1,870             7,415
 Depreciation and amortization.......        4,038          1,640             5,678
 Stock compensation..................          561             --               561
                                        ----------        -------       -----------
Income (loss) from operations........        6,357          1,685             8,042
Interest expense.....................       (3,862)          (423)           (4,285)
Other income, net....................          157            (97)               60
                                        ----------        -------       -----------
Income (loss) before (provision)
 benefit for income taxes............        2,652          1,165             3,817
(Provision) benefit for income
 taxes...............................       (1,245)          (414)           (1,659)
                                        ----------        -------       -----------
Income (loss) before extraordinary
 item................................        1,407        $   751             2,158
                                                          =======       ===========
Extraordinary Item -- early
 extinguishment of debt, net of tax
 benefit of $165.....................         (815)                            (815)
                                        ----------                      -----------
Net income (loss)....................   $      592                      $     1,343
                                        ==========                      ===========
Redeemable convertible preferred
 stock accretion.....................   $     (917)                     $      (917)
                                        ----------                      -----------
Net income (loss) applicable to
 common stockholders.................   $     (325)                     $       426
                                        ==========                      ===========
Basic earnings (loss) per common
 share:
Income (loss) before extraordinary
 item................................   $     0.08                      $      0.14
                                        ==========                      ===========
Extraordinary item...................
Basic net income (loss) per common
 share...............................
Diluted earnings (loss) per common
 share:
Income (loss) before extraordinary
 item................................   $     0.06                             0.12
                                        ==========                      ===========
Extraordinary item...................
Diluted net loss per common share....
Shares used in the per share
 calculations:
 Basic...............................    6,069,350                        8,819,350
                                        ==========                      ===========
 Diluted.............................    7,654,186                       10,404,186
                                        ==========                      ===========
</TABLE>
    
 
                            See accompanying notes.
 
                                       F-6
<PAGE>   82
 
                            WASTE CONNECTIONS, INC.
 
                          NOTES TO UNAUDITED PRO FORMA
                            STATEMENTS OF OPERATIONS
                             (DOLLARS IN THOUSANDS)
 
     ASSUMPTIONS. The unaudited pro forma statements of operations for the year
ended December 31, 1997 and for the nine months ended September 30, 1998 are
presented as if the acquisitions of the Company's predecessors, Madera, Arrow,
Shrader, Curry, Contractors, J & J, B&B, Amador and pending acquisition of
Butler had occurred on January 1, 1997. In addition, the unaudited WCI and the
Murrey Companies pro forma combined statements of operations for the year ended
December 31, 1997 and for the nine months ended September 30, 1998 combine the
pro forma statements of operations for those respective periods with the
historical statements of operations for the Murrey Companies for the year ended
December 31, 1997 and for the nine months ended September 30, 1998,
respectively.
 
     BUSINESS COMBINATIONS. The acquisitions of Madera, Arrow, Shrader, Curry,
Contractors, J & J, B&B, Amador and pending acquisition of Butler are being
accounted for under the purchase method of accounting for business combinations.
Certain items affecting the purchase prices and their allocations are
preliminary. The preliminary purchase prices consist of the following:
 
<TABLE>
<CAPTION>
                        MADERA     ARROW    SHRADER    CURRY    CONTRACTORS    J & J      B&B     AMADOR    BUTLER
                        -------   -------   -------   -------   -----------   -------   -------   -------   -------
<S>                     <C>       <C>       <C>       <C>       <C>           <C>       <C>       <C>       <C>
Cash paid to
  shareholders.......   $ 6,949   $ 7,537   $ 8,106   $ 6,347     $ 2,442     $ 2,074   $ 3,321   $ 5,581   $ 7,013
Common stock
  issued.............     7,500     3,045     9,997        --       1,000          --        --        --        --
Liabilities assumed..     4,256       769     2,102     1,298       2,561       1,372     1,723     1,428     2,219
Sellers notes........        --        --       378        25         166          93        24        --       172
Acquisition costs....       180       125       225        90          73          80       170       100       132
Common stock warrants
  issued.............       954        --        --        --          --          --        --        --        --
                        -------   -------   -------   -------     -------     -------   -------   -------   -------
                        $19,839   $11,476   $20,808   $ 7,760     $ 6,242     $ 3,619   $ 5,238   $ 7,109   $ 9,536
                        =======   =======   =======   =======     =======     =======   =======   =======   =======
</TABLE>
 
     The Company has preliminarily allocated the purchase prices as follows:
 
<TABLE>
<CAPTION>
                        MADERA     ARROW    SHRADER    CURRY    CONTRACTORS    J & J      B&B     AMADOR    BUTLER
                        -------   -------   -------   -------   -----------   -------   -------   -------   -------
<S>                     <C>       <C>       <C>       <C>       <C>           <C>       <C>       <C>       <C>
Tangible assets
  purchased..........   $ 4,534   $   898   $ 4,378   $ 2,877     $ 1,506     $   687   $ 2,611   $ 1,935   $ 9,265
Goodwill.............    14,580    10,528    16,300     4,583       4,686       2,892     2,577     5,144       251
Covenants not to
  compete............        --        50       130       100          50          40        50        30        20
Long-term franchise
  agreements and
  contracts..........       725        --        --       200          --          --        --        --        --
                        -------   -------   -------   -------     -------     -------   -------   -------   -------
                        $19,839   $11,476   $20,808   $ 7,760     $ 6,242     $ 3,619   $ 5,238   $ 7,109   $ 9,536
                        =======   =======   =======   =======     =======     =======   =======   =======   =======
</TABLE>
 
     The valuation of the Company's common stock issued in connection with the
acquisitions was determined based on the market price of the securities over a
reasonable period of time before and after the two companies reached agreement
on the purchase price and, if applicable, after the proposed transaction is
announced. The valuation of common stock issued with contractual trading
restrictions is discounted to reflect the specific features of the stock issued.
 
     WCI's mergers with the Murrey Companies are assumed to be accounted for
under the pooling of interests method of accounting for business combinations.
The pro forma financial statements assume the issuance of 2,750,000 shares,
which represents the expected number of shares to be exchanged. The actual
 
                                       F-7
<PAGE>   83
                            WASTE CONNECTIONS, INC.
 
                          NOTES TO UNAUDITED PRO FORMA
                            STATEMENTS OF OPERATIONS
                             (DOLLARS IN THOUSANDS)
 
number of share of WCI's common stock to be exchanged for all of the outstanding
stock of the Murrey Companies will be determined at the closing date.
 
     PRO FORMA ADJUSTMENTS. The unaudited pro forma statements of operations do
not reflect non-recurring costs resulting directly from the merger between the
Company and the Murrey Companies. The management of the Company estimates that
these costs will approximate $6,500 and will be charged to operations in the
quarter that the merger is consummated. The amount includes costs to merge the
companies, signing bonuses to be paid to Murrey Company officers, and
professional fees. The following adjustments have been made to the unaudited pro
forma statements of operations:
 
     (a)  To eliminate BFI corporate environmental expense allocation related to
          BFI landfill closure costs which do not exist for the Company.
 
     (b)  To record amortization of the loss contract accrual that was recorded
          in connection with the acquisitions of the predecessor operations. The
          loss contract accrual is being amortized to operating expenses over
          the related terms of the loss contracts which range from 6 to 65
          months. The loss contract accrual represents the estimated incremental
          losses to the Company related to certain unfavorable contracts the
          Company acquired in connection with the acquisition of the predecessor
          operations.
 
     (c)  To reduce facilities lease expense to the amounts provided for in the
          sublease agreement entered into with BFI in connection with the
          acquisitions of the predecessor operations. The sublease agreement was
          directly attributable to, a required element of, and a condition to
          the closing of the acquisition.
 
     (d)  To reduce BFI corporate overhead expense allocations to the amount of
          corporate overhead currently being incurred by the Company.
 
     (e)  To eliminate consulting expenses incurred by BFI related to the
          acquisition of The Disposal Group which the Company did not assume in
          connection with the acquisitions of the predecessors. The
          non-assumption of the consulting agreement was directly attributable
          to, a required element of, and a condition to the closing of the
          acquisition.
 
     (f)  To decrease goodwill amortization for the lower goodwill amount
          recorded by the Company in connection with its acquisition of the
          predecessor operations.
 
     (g)  To eliminate the predecessor's interest expense and record interest
          expense on the debt obligations incurred by the Company in connection
          with the acquisitions of the predecessors.
 
     (h)  To record the estimated tax provision associated with the proforma
          adjustments for the Company's predecessors net of the tax benefit for
          the net operating loss for the nine months ended September 30, 1997
          using the Company's effective tax rate.
 
     (i)  To record the estimated tax benefit for the year ended December 31,
          1997 associated with the pro forma adjustments for the Madera $198,
          Arrow $226, Shrader $60, Curry $177, Contractors $96, J&J $76, B&B
          $93, Amador $144 and Butler $12 acquisitions using the Company's
          estimated effective tax rates.
 
     (j)  To reduce officers' salaries to levels provided for in the new
          employment agreements which were directly attributable to, required
          elements of, and a condition to the closing of the Madera acquisition
          $83 and the Shrader acquisition $184 for the year ended 1997 and
          Madera $19 and Shrader $92 for the nine months ended September 30,
          1998.
 
                                       F-8
<PAGE>   84
                            WASTE CONNECTIONS, INC.
 
                          NOTES TO UNAUDITED PRO FORMA
                            STATEMENTS OF OPERATIONS
                             (DOLLARS IN THOUSANDS)
 
     (k)  To reduce depreciation for the reduction in the property and
          equipment's carrying value to fair value related to the acquisition of
          Madera $377, Arrow $78, Shrader $585, Curry $130, Contractors $48, J&J
          $130, B&B $82, Amador $180 and Butler $412 for the year ended December
          31, 1997.
 
     (l)  To increase amortization for the increase in goodwill and other
          intangibles resulting from the acquisition of Madera $364, Arrow $265,
          Shrader $439, Curry $130, Contractors $128, J&J $80, B&B $69, Amador
          $135 and Butler $10 for the year ended December 31, 1997. To increase
          (decrease) depreciation and amortization for effects of the purchase
          for Madera ($19), Arrow $90, Shrader ($160), Curry ($4), Contractors
          $47, J&J ($33), B&B ($2), Amador ($25) and Butler ($228) for the nine
          months ended September 30, 1998. Goodwill is amortized over a term of
          40 years and the covenant not to compete is amortized over a term of
          five years.
 
     (m)  To eliminate interest expense associated with the outstanding debt
          obligations of Madera $280, Arrow $72, Shrader $292, Curry $50,
          Contractors $178, J&J $108, B&B $108, Amador $77 and Butler $180 which
          were paid-off in connection with the acquisitions for the year ended
          December 31, 1997 and Arrow $14, Shrader $191, Curry $33, Contractors
          $90, J&J $53, B&B $46, Amador $88 and Butler $109 for the nine months
          ended September 30, 1998.
 
     (n)  To record interest expense on the additional long-term debt
          obligations incurred by the Company in connection with the acquisition
          of Madera $897, Arrow $606, Shrader $771, Curry $493, Contractors
          $338, J&J $244, B&B $354, Amador $481 and Butler $612 for the year
          ended 1997 and Arrow $239, Shrader $372, Curry $247, Contractors $169,
          J&J $122, B&B $177, Amador $361 and Butler $459 for the nine months
          ended September 30, 1998. In the aggregate the Company incurred or
          refinanced long-term debt obligations of approximately $64,469 related
          to these acquisitions; with a weighted average interest rate of 7.4%.
 
     (o)  To record C corporation income tax (provision) benefit for the year
          ended December 31, 1997 for Madera ($297), Shrader ($290), Contractors
          $28, J&J $27, B&B ($82), Amador $41 and Butler $(45), which were
          subchapter S corporations LLC or partnerships for income tax purposes
          for all periods prior to their acquisition by the Company. To record
          the estimated C corporation tax (provision) benefit and tax effect of
          pro forma adjustments for Madera $83, Arrow $118, Shrader ($64), Curry
          $10, Contractors $97, J&J $42, B&B $4, Amador $110 and Butler ($42)
          for the nine months ended September 30, 1998.
 
                                       F-9
<PAGE>   85
 
                            WASTE CONNECTIONS, INC.
 
                          NOTES TO UNAUDITED PRO FORMA
                            STATEMENTS OF OPERATIONS
                      (IN THOUSANDS, EXCEPT SHARE AMOUNTS)
 
     PRO FORMA PER SHARE DATA. The shares used in computing the unaudited pro
forma net loss per share for the periods ended December 31, 1997, and the nine
months ended September 30, 1998 are based upon the pro forma number of common
shares as summarized in the table below. See Note 1 of the Company's notes to
financial statements included elsewhere herein for information concerning the
computation of basic and diluted net income (loss) per share.
 
<TABLE>
<CAPTION>
                                                               YEAR ENDED     NINE MONTHS ENDED
                                                              DECEMBER 31,      SEPTEMBER 30,
                                                                  1997               1998
                                                              ------------    ------------------
<S>                                                           <C>             <C>
Basic Share Count:
  Company weighted average shares outstanding...............    1,872,567          5,476,532
  Shares issued in connection with the acquisition of
     Arrow..................................................      213,750            131,538(1)
  Shares issued in connection with the acquisition of
     Contractors............................................       76,423             43,829(2)
  Shares issued in connection with the acquisition of
     Shrader................................................      537,566            417,451(3)
                                                               ----------         ----------
  Shares used in calculating proforma basic income (loss)
     per share..............................................    2,700,306          6,069,350
  Shares to be issued in exchange for the Murrey Companies'
     stock(4)...............................................    2,750,000          2,750,000
                                                               ----------         ----------
  Shares used in calculating pro forma combined basic net
     income (loss) per share................................    5,450,306          8,819,350
                                                               ==========         ==========
Diluted Share Count:
  Shares used in calculating pro forma basic income (loss)
     per share..............................................    2,700,306          6,069,350
  Dilutive effect of stock options and warrants
     outstanding............................................           --          1,584,836
                                                               ----------         ----------
  Shares used in calculating pro forma dilutive income
     (loss).................................................    2,700,306          7,654,186
  Shares to be issued in exchange for the Murrey Companies'
     stock(4)...............................................    2,750,000          2,750,000
                                                               ----------         ----------
  Shares used in calculating pro forma combined diluted net
     income (loss) per share................................    5,450,306         10,404,186
                                                               ==========         ==========
</TABLE>
 
- ---------------
(1) Includes only incremental shares issued for acquisition of Arrow because
    82,212 shares are already included in the Company's weighted average shares
    outstanding for the nine months ended September 30, 1998.
 
(2) Includes only incremental shares issued for acquisition of Contractors
    because 39,094 shares are already in the Company's weighted average shares
    outstanding for the nine months ended September 30, 1998.
 
(3) Includes only incremental shares issued for acquisition of Shrader because
    120,115 shares are already in the Company's weighted average for the nine
    months ended September 30, 1998.
 
(4) The shares of the Company's common stock to be issued in exchange for the
    Murrey Companies stock included in the above table represents the expected
    number of shares to be exchanged. The actual number of shares of the
    Company's common stock to be exchanged for all of the outstanding stock of
    the Murrey Companies will be determined at the closing date.
 
                                      F-10
<PAGE>   86
 
     In the event that the Company is required to exchange an additional 500,000
shares of its common stock to consummate the merger with the Murrey Companies
the effect on pro forma net loss per share amounts are as follows:
 
<TABLE>
<CAPTION>
                                                                                PRO FORMA
                                                                                COMBINED
                                                                               NINE MONTHS
                                                               YEAR ENDED         ENDED
                                                              DECEMBER 31,    SEPTEMBER 30,
                                                                  1997            1998
                                                              ------------    -------------
<S>                                                           <C>             <C>
Basic earnings per common share:
  Income (loss) before extraordinary item...................     $(0.74)         $ 0.13
Diluted earnings per common share:
  Income (loss) before extraordinary item...................     $(0.74)         $ 0.11
</TABLE>
 
     ACQUISITION COSTS. The Company incurred costs of $180, $125, $225, $90,
$73, $80, $170, $100 and $132 related to the Madera, Arrow, Shrader, Curry,
Contractors, J&J, B&B, Amador and Butler acquisitions, respectively, which have
been factored into the respective purchase agreements. Costs incurred by Madera,
Arrow, Shrader, Curry, Contractors, J&J, B&B, Amador and Butler were expensed as
incurred.
 
     No adjustments have been made in these pro forma statements of operations
to conform accounting policies of the Murrey Companies with those of the
Company. The nature and extent of such adjustments, if any, are not expected to
be significant.
 
   
     CONTINGENT PAYMENTS. In connection with the Madera, Shrader, J & J and
Butler acquisitions the Company is required to pay contingent consideration to
certain former shareholders of the respective companies, subject to their
involvement in specified events that give rise to the consideration. No amounts
related to these contingent payments have been included in the pro forma
financial statements as the events which would give rise to such payments have
not yet occurred nor are probable.
    
 
   
     Contingent payments relating to these acquisitions total $6.8 million, are
payable primarily in cash, and are earned based upon the achievement of certain
milestones. Of the total contingent payments, $4.8 million relates to the
achievement of certain operational and financial performance goals, and $2
million relates to the consummation of future acquisitions.
    
 
     OTHER. The Professional Cleaning business of Madera ceased operations in
July 1997. This business had revenues of $193 and an operating loss of $215
during the year ended December 31, 1997.
 
     Shortly before the acquisition of the predecessor operations by the
Company, BFI amended a franchise agreement with a municipality which provided
for a reduction in the franchise fees. Had this amended franchise agreement been
in effect as of January 1, 1997, pro forma cost of operations would have been
approximately $135 lower during the year ended December 31, 1997.
 
                                      F-11
<PAGE>   87
 
                            WASTE CONNECTIONS, INC.
 
                       UNAUDITED PRO FORMA BALANCE SHEET
                               SEPTEMBER 30, 1998
                                 (IN THOUSANDS)
<TABLE>
<CAPTION>
                                               AMADOR           BUTLER
                              WASTE           DISPOSAL          COUNTY
                        CONNECTIONS, INC.   SERVICE, INC.   LANDFILL, INC.    PRO FORMA                     THE MURREY
                          CONSOLIDATED        COMBINED         COMBINED      ADJUSTMENTS        PRO FORMA   COMPANIES
                        -----------------   -------------   --------------   -----------        ---------   ----------
<S>                     <C>                 <C>             <C>              <C>                <C>         <C>
ASSETS
Current assets:
  Cash................      $  1,090           $  239           $   47         $    --(2)(5)(6) $  1,376     $   405
  Accounts receivable,
    net...............         9,046              190              428              --             9,664       3,364
  Prepaid expenses and
    other current
    assets............           773               76              154              --             1,003          10
                            --------           ------           ------         -------          --------     -------
        Total current
          assets......        10,909              505              629              --            12,043       3,779
Property and
  equipment, net......        18,438            2,107            3,124           4,454(3)         28,123      14,371
Goodwill, net.........        81,294               --               --           5,395(4)         86,689       1,758
Other assets..........         3,854               30              351              50(4)          4,285          --
                            --------           ------           ------         -------          --------     -------
                            $114,495           $2,642           $4,104         $ 9,899          $131,140     $19,908
                            ========           ======           ======         =======          ========     =======
LIABILITIES AND
  STOCKHOLDERS' EQUITY
Current liabilities:
  Short-term
    borrowings........      $     --           $   --           $   --         $    --          $     --     $   620
  Accounts payable....         6,123               87              107              --             6,317       2,217
  Advance from a
    related party.....            --               --               --              --                --         543
  Deferred revenue....         1,501               --               --              --             1,501       1,432
  Accrued
    liabilities.......         3,165              145              214              --             3,524       1,288
  Income taxes
    payable...........            --               --               --              --                --         277
  Current portion of
    notes payable.....         1,256               38              608            (474)(5)(8)      1,428         751
  Other current
    liabilities.......           346               --               --              --               346          --
  Accrued merger
    related
    expenses..........            --               --               --              --                --          --
                            --------           ------           ------         -------          --------     -------
                              12,391              270              929            (474)           13,116       7,128
Other long-term
  liabilities.........         1,499               --              474              --             1,973          --
Long-term debt, net...        40,404            1,158              816          13,472(5)(6)      55,850       4,047
Deferred income
  taxes...............           379               --               --              --               379         658
Stockholders' equity:
  Common stock........            92              188               10            (198)(7)            92          45
  Additional paid-in
    capital...........        65,944              118                2            (120)(7)        65,944         455
  Deferred stock
    compensation......          (499)              --               --              --              (499)         --
  Retained earnings
    (deficit).........        (5,715)             908            1,873          (2,781)(7)        (5,715)      7,575
                            --------           ------           ------         -------          --------     -------
        Total
         stockholders'
          equity......        59,822            1,214            1,885          (3,099)           59,822       8,075
                            --------           ------           ------         -------          --------     -------
                            $114,495           $2,642           $4,104         $ 9,899          $131,140     $19,908
                            ========           ======           ======         =======          ========     =======
 
<CAPTION>
 
                         PRO FORMA    PRO FORMA
                        ADJUSTMENTS   COMBINED
                        -----------   ---------
<S>                     <C>           <C>
ASSETS
Current assets:
  Cash................    $    --     $  1,781
  Accounts receivable,
    net...............         --       13,028
  Prepaid expenses and
    other current
    assets............         --        1,013
                          -------     --------
        Total current
          assets......         --       15,822
Property and
  equipment, net......         --       42,494
Goodwill, net.........         --       88,447
Other assets..........         --        4,285
                          -------     --------
                          $    --     $151,048
                          =======     ========
LIABILITIES AND
  STOCKHOLDERS' EQUITY
Current liabilities:
  Short-term
    borrowings........    $    --     $    620
  Accounts payable....         --        8,534
  Advance from a
    related party.....         --          543
  Deferred revenue....         --        2,933
  Accrued
    liabilities.......         --        4,812
  Income taxes
    payable...........         --          277
  Current portion of
    notes payable.....         --        2,179
  Other current
    liabilities.......         --          346
  Accrued merger
    related
    expenses..........      6,500(1)     6,500
                          -------     --------
                            6,500       26,744
Other long-term
  liabilities.........         --        1,973
Long-term debt, net...         --       59,897
Deferred income
  taxes...............         --        1,037
Stockholders' equity:
  Common stock........        (17)(1)      120
  Additional paid-in
    capital...........         17(1)    66,416
  Deferred stock
    compensation......         --         (499)
  Retained earnings
    (deficit).........     (6,500)(1)   (4,640)
                          -------     --------
        Total
         stockholders'
          equity......     (6,500)      61,397
                          -------     --------
                          $    --     $151,048
                          =======     ========
</TABLE>
 
                            See accompanying notes.
 
                                      F-12
<PAGE>   88
 
                            WASTE CONNECTIONS, INC.
 
            NOTES TO UNAUDITED PRO FORMA CONSOLIDATED BALANCE SHEET
                      (IN THOUSANDS, EXCEPT SHARE AMOUNTS)
 
     ASSUMPTIONS. The unaudited pro forma balance sheet as of September 30, 1998
combines the historical balance sheet of Waste Connections, Inc. with the
historical balance sheets of Amador and Butler to be accounted for as purchases,
and the historical balance sheet of the Murrey Companies to be accounted for as
poolings-of-interests as of September 30, 1998.
 
     PRO FORMA ADJUSTMENTS. The following adjustments have been made to the
unaudited pro forma consolidated balance sheet.
 
     (1) To record Merger related entries consisting of estimated non-recurring
         costs of the Merger with the Murrey Companies and the issuance of
         2,750,000 shares of the Company's common stock. The management of the
         Company estimates that the non-recurring costs will approximate $6,500
         and will be charged to operations in the quarter the merger is
         consummated. This estimated expense, has been charged to retained
         earnings on the accompanying unaudited pro forma balance sheet.
 
     (2) Cash payments to former shareholders of Amador ($5,581) and payment of
         acquisition costs ($100). Cash payments to the former shareholders of
         Butler ($7,013) and payment of acquisition cost of ($132).
 
     (3) To increase (reduce) property, plant and equipment ($707) and $5,161 of
         Amador and Butler, respectively to its estimated fair market value.
 
     (4) To increase goodwill and other intangible assets for excess of the
         purchase prices over the net assets acquired from Amador of $5,144 and
         $30 and Butler of $251 and $20, respectively.
 
     (5) Pay off outstanding debt obligations ($1,196) of Amador and debt
         obligations ($1,424) of Butler.
 
     (6) To record additional long term debt associated with the acquisition of
         Amador and Butler of $6,877 and $8,569 respectively.
 
     (7) To eliminate the equity accounts of Amador and Butler.
 
     (8) To record Seller Notes Payable issued in connection with the
         acquisition of Butler of $172.
 
     No adjustments have been made in the unaudited pro forma balance sheet to
conform accounting policies of the Murrey Companies with those of the Company.
The nature and extent of such adjustments, if any, are not expected to be
significant.
 
                                      F-13
<PAGE>   89
 
               REPORT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS
 
Board of Directors and Stockholders
Waste Connections, Inc.
 
     We have audited the accompanying financial statements of Waste Connections,
Inc. and Predecessors as of December 31, 1996 and 1997, and for each of the
three years in the period ended December 31, 1997 which appear on pages F-15
through F-22 herein as listed in the accompanying Index to Financial Statements.
These financial statements are the responsibility of the Company's management.
Our responsibility is to express an opinion on these financial statements based
on our audits.
 
     We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.
 
     In our opinion, the financial statements referred to above present fairly,
in all material respects, the financial position of Waste Connections, Inc. and
Predecessors at December 31, 1996 and 1997, and the results of their operations
and their cash flows for each of the three years in the period ended December
31, 1997, in conformity with generally accepted accounting principles.
 
                                                           /s/ ERNST & YOUNG LLP
 
Sacramento, California
March 6, 1998
 
                                      F-14
<PAGE>   90
 
                    WASTE CONNECTIONS, INC. AND PREDECESSORS
 
                                 BALANCE SHEETS
               (IN THOUSANDS, EXCEPT SHARE AND PER SHARE AMOUNTS)
 
<TABLE>
<CAPTION>
                                                                               WASTE CONNECTIONS, INC.
                                                                                     CONSOLIDATED
                                                             PREDECESSORS    ----------------------------
                                                               COMBINED
                                                             DECEMBER 31,    DECEMBER 31,   SEPTEMBER 30,
                                                             1996 (NOTE 1)       1997           1998
                                                             -------------   ------------   -------------
                                                                                            (UNAUDITED)
<S>                                                          <C>             <C>            <C>
ASSETS
Current assets:
  Cash......................................................    $   102        $   820        $  1,090
  Accounts receivable, less allowance for doubtful accounts
    of $390 at September 30, 1998 and $19 at December 31,
    1997 ($81 in 1996)......................................      2,650          3,940           9,046
  Prepaid expenses and other current assets.................        339            358             773
                                                                -------        -------        --------
        Total current assets................................      3,091          5,118          10,909
Property and equipment, net.................................      5,069          4,185          18,438
Goodwill, net...............................................      6,762          9,408          81,294
Other assets................................................        369            169           3,854
                                                                -------        -------        --------
                                                                $15,291        $18,880        $114,495
                                                                =======        =======        ========
LIABILITIES AND STOCKHOLDERS' EQUITY (DEFICIT)
Current liabilities:
  Accounts payable..........................................    $ 1,025        $ 2,609        $  6,123
  Deferred revenue..........................................        564            597           1,501
  Accrued liabilities.......................................        634            825           3,165
  Current portion of notes payable..........................         --             --           1,256
  Current portion of long-term debt.........................         54             --              --
  Other current liabilities.................................        119            251             346
                                                                -------        -------        --------
        Total current liabilities...........................      2,396          4,282          12,391
Other long term liabilities.................................         --            702           1,499
Long-term debt..............................................         89          6,762          40,404
Deferred income taxes.......................................         --            162             379
Commitments and contingencies (Note 7)
Redeemable convertible preferred stock: $.01 par value;
  2,500,000 shares authorized; 2,499,998 shares issued and
  outstanding at December 31, 1997; no shares issued and
  outstanding at September 30, 1998 (aggregate liquidation
  preference of $10,500 at December 31, 1997)...............         --          7,523              --
Net intercompany balance....................................     12,806             --              --
Stockholders' equity (deficit):
  Preferred stock: $.01 par value; 7,500,000 shares
    authorized; none issued and outstanding.................         --             --              --
  Common stock: $.01 par value; 50,000,000 shares
    authorized; 2,300,000 shares issued and outstanding at
    December 31, 1997; 9,204,632 shares issued and
    outstanding at September 30, 1998.......................         --             23              92
  Additional paid-in capital................................         --          5,105          65,944
  Stockholder notes receivable..............................         --            (82)             --
  Deferred stock compensation...............................         --             --            (499)
  Accumulated deficit.......................................         --         (5,597)         (5,715)
                                                                -------        -------        --------
        Total stockholders' equity (deficit)................         --           (551)         59,822
                                                                -------        -------        --------
                                                                $15,291        $18,880        $114,495
                                                                =======        =======        ========
</TABLE>
 
                            See accompanying notes.
 
                                      F-15
<PAGE>   91
 
                    WASTE CONNECTIONS, INC. AND PREDECESSORS
 
                            STATEMENTS OF OPERATIONS
                     YEAR ENDED DECEMBER 31, 1997 (AUDITED)
              AND NINE MONTHS ENDED SEPTEMBER 30, 1998 (UNAUDITED)
               (IN THOUSANDS, EXCEPT SHARE AND PER SHARE AMOUNTS)
 
<TABLE>
<CAPTION>
                                                                                 WASTE
                                                         PREDECESSORS      CONNECTIONS, INC.
                                                           COMBINED       CONSOLIDATED PERIOD          WASTE
                                                          NINE MONTHS       FROM INCEPTION       CONNECTIONS, INC.
                                                             ENDED        (SEPTEMBER 9, 1997)    CONSOLIDATED NINE
                                                         SEPTEMBER 30,          THROUGH             MONTHS ENDED
                                                         1997 (NOTE 1)     DECEMBER 31, 1997     SEPTEMBER 30, 1998
                                                         -------------    -------------------    ------------------
                                                                                                    (UNAUDITED)
<S>                                                      <C>              <C>                    <C>
Revenues................................................    $18,114           $    6,237             $   35,336
Operating expenses:
  Cost of operations....................................     14,753                4,703                 24,007
  Selling, general and administrative...................      3,009                  619                  3,518
  Depreciation and amortization.........................      1,083                  354                  2,693
  Start-up and integration..............................         --                  493                     --
  Stock compensation....................................         --                4,395                    561
                                                            -------           ----------             ----------
Income (loss) from operations...........................       (731)              (4,327)                 4,557
Interest expense........................................       (456)              (1,035)                (1,427)
Other income (expense), net.............................         14                  (36)                    --
                                                            -------           ----------             ----------
Income (loss) before income taxes.......................     (1,173)              (5,398)                 3,130
Income tax (provision) benefit..........................         --                  332                 (1,513)
                                                            -------           ----------             ----------
Income (loss) before extraordinary item.................    $(1,173)              (5,066)                 1,617
                                                            =======
Extraordinary item -- early extinguishment
  of debt, net of tax benefit of $165...................                              --                   (815)
                                                                              ----------             ----------
Net income (loss).......................................                      $   (5,066)            $      802
                                                                              ==========             ==========
Redeemable convertible preferred stock
  accretion.............................................                            (531)                  (917)
                                                                              ----------             ----------
Net loss applicable to common stockholders..............                      $   (5,597)            $     (115)
                                                                              ==========             ==========
Basic loss per common share:
  Income (loss) before extraordinary item...............                      $    (2.99)            $     0.13
  Extraordinary item....................................                              --                  (0.15)
                                                                              ----------             ----------
  Net loss per common share.............................                      $    (2.99)            $    (0.02)
                                                                              ==========             ==========
Diluted earnings per common share:
  Income before extraordinary item......................                      $    (2.99)            $     0.09
  Extraordinary item....................................                              --                  (0.11)
                                                                              ----------             ----------
  Net loss per common share.............................                      $    (2.99)            $    (0.02)
                                                                              ==========             ==========
Shares used in calculating basic net loss per share.....                       1,872,567              5,476,532
                                                                              ==========             ==========
Shares used in calculating diluted net loss per share...                       1,872,567              7,438,658
                                                                              ==========             ==========
Pro forma basic net income (loss) per share.............                      $    (1.16)            $     0.11
                                                                              ==========             ==========
Shares used in calculating pro forma basic net income
  (loss) per share......................................                       4,372,565              7,117,557
                                                                              ==========             ==========
Pro forma diluted net income (loss) per share...........                                             $     0.09
                                                                                                     ==========
Shares used in calculating pro forma diluted net income
  (loss) per share......................................                                              8,702,393

                                                                                                     ==========
</TABLE>
 
                            See accompanying notes.
 
                                      F-16
<PAGE>   92
 
                    WASTE CONNECTIONS, INC. AND PREDECESSORS
 
                      STATEMENTS OF OPERATIONS (CONTINUED)
                          YEAR ENDED DECEMBER 31, 1996
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                          PREDECESSORS
                                                              ------------------------------------
                                                               THE DISPOSAL
                                                                   GROUP
                                                                 COMBINED          PREDECESSORS
                                                                PERIOD FROM       COMBINED PERIOD
                                                              JANUARY 1, 1996          ENDED
                                                                  THROUGH        DECEMBER 31, 1996
                                                               JULY 31, 1996         (NOTE 1)
                                                              ---------------    -----------------
<S>                                                           <C>                <C>
Revenues....................................................      $8,738              $13,422
Operating expenses:
  Cost of operations........................................       6,174               11,420
  Selling, general and administrative.......................       2,126                1,649
  Depreciation and amortization.............................         324                  962
                                                                  ------              -------
Income (loss) from operations...............................         114                 (609)
Interest expense............................................         (12)                (225)
Other income (expense), net.................................       2,661                 (147)
                                                                  ------              -------
Income (loss) before income taxes...........................       2,763                 (981)
Income tax (provision) benefit..............................        (505)                  --
                                                                  ------              -------
Net income (loss)...........................................      $2,258              $  (981)
                                                                  ======              =======
</TABLE>
 
                            See accompanying notes.
 
                                      F-17
<PAGE>   93
 
                    WASTE CONNECTIONS, INC. AND PREDECESSORS
 
                      STATEMENTS OF OPERATIONS (CONTINUED)
                          YEAR ENDED DECEMBER 31, 1995
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                PREDECESSORS
                                            ----------------------------------------------------
                                            THE DISPOSAL           FIBRES
                                               GROUP        INTERNATIONAL, INC.     PREDECESSORS
                                              COMBINED          PERIOD FROM          ONE MONTH
                                             YEAR ENDED       JANUARY 1, 1995          ENDED
                                            DECEMBER 31,          THROUGH           DECEMBER 31,
                                                1995         NOVEMBER 30, 1995      1995(NOTE 1)
                                            ------------    --------------------    ------------
<S>                                         <C>             <C>                     <C>
Revenues..................................    $19,660              $7,340               $595
Operating expenses:
  Cost of operations......................     16,393               5,653                527
  Selling, general and administrative.....      3,312                 823                 72
  Depreciation and amortization...........        628                 715                 74
                                              -------              ------               ----
Income (loss) from operations.............       (673)                149                (78)
Interest expense..........................       (206)               (162)                (1)
Other income, net.........................         --                  98                  5
                                              -------              ------               ----
Income (loss) before income taxes.........       (879)                 85                (74)
Income tax (provision) benefit............        298                 (29)                --
                                              -------              ------               ----
Net income (loss).........................    $  (581)             $   56               $(74)
                                              =======              ======               ====
</TABLE>
 
                            See accompanying notes.
 
                                      F-18
<PAGE>   94
 
                    WASTE CONNECTIONS, INC. AND PREDECESSORS
 
                   CONSOLIDATED STATEMENT OF REDEEMABLE STOCK
                       AND STOCKHOLDERS' EQUITY (DEFICIT)
 PERIOD FROM INCEPTION (SEPTEMBER 9, 1997) THROUGH DECEMBER 31, 1997 (AUDITED)
              AND NINE MONTHS ENDED SEPTEMBER 30, 1998 (UNAUDITED)
                      (IN THOUSANDS, EXCEPT SHARE AMOUNTS)
<TABLE>
<CAPTION>
                                                                                      WASTE CONNECTIONS, INC. CONSOLIDATED
                                                                                  ---------------------------------------------
                                         REDEEMABLE                                      STOCKHOLDERS' EQUITY (DEFICIT)
                                        CONVERTIBLE             REDEEMABLE        ---------------------------------------------
                                      PREFERRED STOCK          COMMON STOCK          COMMON STOCK      ADDITIONAL   STOCKHOLDER
                                    --------------------   --------------------   ------------------    PAID-IN        NOTES
                                      SHARES     AMOUNT      SHARES     AMOUNT     SHARES     AMOUNT    CAPITAL     RECEIVABLE
                                    ----------   -------   ----------   -------   ---------   ------   ----------   -----------
<S>                                 <C>          <C>       <C>          <C>       <C>         <C>      <C>          <C>
Balances at inception.............          --   $    --           --   $    --          --     --      $    --        $ --
Sale of redeemable convertible
 preferred stock..................   2,499,998     6,992           --        --          --     --           --          --
Sale of common stock..............          --        --           --        --   2,300,000     23        4,395          --
Issuance of common stock
 warrants.........................          --        --           --        --          --     --          710          --
Issuance of stockholder notes
 receivable.......................          --        --           --        --          --     --           --         (82)
Accretion of redeemable
 convertible preferred stock......          --       531           --        --          --     --           --          --
Net loss..........................          --        --           --        --          --     --           --          --
                                    ----------   -------   ----------   -------   ---------    ---      -------        ----
Balances at December 31, 1997.....   2,499,998     7,523           --        --   2,300,000     23        5,105         (82)
Exercise of warrants
 (unaudited)......................          --        --           --        --      50,000     --          140          --
Payment of stockholder notes
 receivable.......................          --        --           --        --          --     --           --          82
Issuance of redeemable common
 stock (unaudited)................          --        --    1,000,000     7,500          --     --           --          --
Issuance of common stock warrants
 (unaudited)......................          --        --           --        --          --     --        2,388          --
Accretion of redeemable
 convertible preferred stock
 (unaudited)......................          --       917           --        --          --     --           --          --
Deferred stock compensation
 associated with stock options
 (unaudited)......................          --        --           --        --          --     --          821          --
Amortization of deferred stock
 compensation (unaudited).........          --        --           --        --          --     --           --          --
Common stock sold in connection
 with IPO (unaudited).............          --        --           --        --   2,300,000     23       23,963          --
Issuance of common stock
 (unaudited)......................          --        --           --        --   1,054,634     11       17,783          --
Preferred stock dividend
 (unaudited)......................          --      (161)          --        --          --     --           --          --
Conversion of redeemable preferred
 stock (unaudited)................  (2,499,998)   (8,279)          --        --   2,499,998     25        8,254          --
Conversion of redeemable common
 stock (unaudited)................                         (1,000,000)   (7,500)  1,000,000     10        7,490          --
Net income (unaudited)............          --        --           --        --          --     --           --          --
                                    ----------   -------   ----------   -------   ---------    ---      -------        ----
Balances at September 30, 1998
 (unaudited)......................          --   $    --           --   $    --   9,204,632    $92      $65,944        $ --
                                    ==========   =======   ==========   =======   =========    ===      =======        ====
 
<CAPTION>
                                    WASTE CONNECTIONS, INC. CONSOLIDATED
                                    ------------------------------------
                                       STOCKHOLDERS' EQUITY (DEFICIT)
                                    ------------------------------------
                                      DEFERRED
                                       STOCK       ACCUMULATED
                                    COMPENSATION     DEFICIT      TOTAL
                                    ------------   -----------   -------
<S>                                 <C>            <C>           <C>
Balances at inception.............     $  --         $    --     $    --
Sale of redeemable convertible
 preferred stock..................        --              --          --
Sale of common stock..............        --              --       4,418
Issuance of common stock
 warrants.........................        --              --         710
Issuance of stockholder notes
 receivable.......................        --              --         (82)
Accretion of redeemable
 convertible preferred stock......        --            (531)       (531)
Net loss..........................        --          (5,066)     (5,066)
                                       -----         -------     -------
Balances at December 31, 1997.....        --          (5,597)       (551)
Exercise of warrants
 (unaudited)......................        --              --         140
Payment of stockholder notes
 receivable.......................        --              --          82
Issuance of redeemable common
 stock (unaudited)................        --              --          --
Issuance of common stock warrants
 (unaudited)......................        --              --       2,388
Accretion of redeemable
 convertible preferred stock
 (unaudited)......................        --            (917)       (917)
Deferred stock compensation
 associated with stock options
 (unaudited)......................      (821)             --          --
Amortization of deferred stock
 compensation (unaudited).........       322              --         322
Common stock sold in connection
 with IPO (unaudited).............        --              --      23,986
Issuance of common stock
 (unaudited)......................        --              --      17,794
Preferred stock dividend
 (unaudited)......................        --              --          --
Conversion of redeemable preferred
 stock (unaudited)................        --              --       8,279
Conversion of redeemable common
 stock (unaudited)................        --              --       7,500
Net income (unaudited)............        --             802         802
                                       -----         -------     -------
Balances at September 30, 1998
 (unaudited)......................     $(499)        $(5,715)    $59,822
                                       =====         =======     =======
</TABLE>
 
                            See accompanying notes.
 
                                      F-19
<PAGE>   95
 
                    WASTE CONNECTIONS, INC. AND PREDECESSORS
 
                            STATEMENTS OF CASH FLOWS
                     YEAR ENDED DECEMBER 31, 1997 (AUDITED)
              AND NINE MONTHS ENDED SEPTEMBER 30, 1998 (UNAUDITED)
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                              WASTE CONNECTIONS, INC.
                                                              PREDECESSORS         CONSOLIDATED
                                                                COMBINED            PERIOD FROM
                                                               NINE MONTHS           INCEPTION          WASTE CONNECTIONS, INC.
                                                                  ENDED         (SEPTEMBER 9, 1997)        CONSOLIDATED NINE
                                                              SEPTEMBER 30,           THROUGH                MONTHS ENDED
                                                              1997 (NOTE 1)      DECEMBER 31, 1997        SEPTEMBER 30, 1998
                                                              -------------   -----------------------   -----------------------
                                                                                                              (UNAUDITED)
<S>                                                           <C>             <C>                       <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
  Net income (loss).........................................     $(1,173)           $   (5,066)                $    802
  Adjustments to reconcile net income (loss) to net cash
    provided by (used in) operating activities:
    Gain on sale of assets..................................          (4)                   --                       --
    Depreciation and amortization...........................       1,083                   354                    2,693
    Deferred income taxes...................................          --                  (369)                      --
    Amortization of debt issuance costs, debt guarantee fees
      and accretion of discount on long-term debt...........          --                   860                      176
    Stock compensation......................................          --                 4,395                      562
    Extraordinary item -- extinguishment of debt............          --                    --                      981
    Changes in operating assets and liabilities, net of
      effects from acquisitions:
      Accounts receivable, net..............................        (604)               (1,021)                    (989)
      Prepaid expenses and other current assets.............         (74)                  (51)                    (249)
      Accounts payable......................................        (221)                2,607                      492
      Deferred revenue......................................        (137)                  169                      326
      Accrued liabilities...................................        (450)                  801                     (178)
      Accrued losses on acquired contracts..................          --                   (65)                    (241)
                                                                 -------            ----------                 --------
  Net cash provided by (used in) operating activities.......      (1,580)                2,614                    4,375
CASH FLOWS FROM INVESTING ACTIVITIES:
  Proceeds from sale of property and equipment..............         188                    --                       58
  Payments for acquisitions, net of cash acquired...........          --               (11,493)                 (44,185)
  Prepaid acquisition costs.................................          --                   (20)                      --
  Capital expenditures for property and equipment...........        (735)                 (264)                  (2,068)
  Decrease (increase) in other assets.......................          22                   (19)                      --
  Proceeds from stockholder notes receivable................          --                    --                       82
  Issuance of stockholder notes receivable..................          --                   (82)                      --
                                                                 -------            ----------                 --------
Net cash used in investing activities.......................        (525)              (11,878)                 (46,113)
CASH FLOWS FROM FINANCING ACTIVITIES:
  Net intercompany balance..................................       2,142                    --                       --
  Proceeds from short-term borrowings.......................          --                   600                       --
  Proceeds from long-term debt..............................          --                 5,500                   57,703
  Principal payments on notes payable.......................         (38)               (2,724)                    (407)
  Principal payments on long-term debt......................          --                  (157)                 (38,653)
  Proceeds from sale of redeemable convertible preferred
    stock...................................................          --                 6,992                       --
  Proceeds from sale of common stock........................          --                    23                   24,126
  Payment of preferred stock dividend.......................          --                    --                     (161)
  Debt issuance costs.......................................          --                  (150)                    (600)
                                                                 -------            ----------                 --------
Net cash provided by financing activities...................       2,104                10,084                   42,008
                                                                 -------            ----------                 --------
Net increase (decrease) in cash.............................          (1)                  820                      270
Cash at beginning of period.................................         102                    --                      820
                                                                 -------            ----------                 --------
Cash at end of period.......................................     $   101            $      820                 $  1,090
                                                                 =======            ==========                 ========
SUPPLEMENTARY DISCLOSURES OF CASH FLOW INFORMATION AND
  NON-CASH TRANSACTIONS:
  Cash paid for income taxes................................     $    --            $       --                 $    887
                                                                 =======            ==========                 ========
  Cash paid for interest....................................     $    --            $      183                 $    791
                                                                 =======            ==========                 ========
  Redeemable convertible preferred stock accretion..........                        $      531                 $    917
                                                                                    ==========                 ========
  In connection with the BFI related acquisitions (Note 2),
    the Company assumed liabilities as follows:
    Fair value of assets acquired...........................                        $   17,040                 $ 91,103
    Cash paid for acquisitions (including acquisition
      costs)................................................                           (11,493)                 (44,185)
                                                                                    ----------                 --------
    Liabilities assumed, stock and notes payable to
      seller................................................                        $    5,547                 $ 46,918
                                                                                    ==========                 ========
</TABLE>
 
                            See accompanying notes.
 
                                      F-20
<PAGE>   96
 
                    WASTE CONNECTIONS, INC. AND PREDECESSORS
 
                      STATEMENTS OF CASH FLOWS (CONTINUED)
                          YEAR ENDED DECEMBER 31, 1996
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                   PREDECESSORS
                                                          -------------------------------
                                                           THE DISPOSAL
                                                          GROUP COMBINED    PREDECESSORS
                                                            PERIOD FROM       COMBINED
                                                            JANUARY 1,      PERIOD ENDED
                                                           1996 THROUGH     DECEMBER 31,
                                                           JULY 31, 1996    1996 (NOTE 1)
                                                          ---------------   -------------
<S>                                                       <C>               <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
  Net income (loss).....................................      $2,258           $ (981)
  Adjustments to reconcile net income (loss) to net cash
     provided by (used in) operating activities:
     Depreciation and amortization......................         324              962
     Deferred income taxes..............................         298               --
     Changes in operating assets and liabilities, net of
       effects from acquisitions:
       Accounts receivable, net.........................       1,201           (1,992)
       Prepaid expenses and other current assets........          (2)            (104)
       Accounts payable.................................         (45)             713
       Deferred revenue.................................        (522)             421
       Accrued liabilities..............................        (987)             428
                                                              ------           ------
  Net cash provided by (used in) operating activities...       2,525             (553)
CASH FLOWS FROM INVESTING ACTIVITIES:
  Proceeds from sale of property and equipment..........          --              117
  Capital expenditures for property and equipment.......          (7)            (282)
  Decrease in other assets..............................          --               33
                                                              ------           ------
Net cash used in investing activities...................          (7)            (132)
CASH FLOWS FROM FINANCING ACTIVITIES:
  Net intercompany balance..............................          --              642
  Proceeds from long-term debt..........................         142               --
  Principal payments on long-term debt..................        (427)              --
  Principal payments on notes payable...................          --              (39)
                                                              ------           ------
Net cash provided by (used in) financing activities.....        (285)             603
                                                              ------           ------
Net increase (decrease) in cash.........................       2,233              (82)
Cash at beginning of period.............................         961              184
                                                              ------           ------
Cash at end of period...................................      $3,194           $  102
                                                              ======           ======
</TABLE>
 
                            See accompanying notes.
 
                                      F-21
<PAGE>   97
 
                    WASTE CONNECTIONS, INC. AND PREDECESSORS
 
                      STATEMENTS OF CASH FLOWS (CONTINUED)
                          YEAR ENDED DECEMBER 31, 1995
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                     PREDECESSORS
                                          -----------------------------------
                                          THE DISPOSAL          FIBRES
                                             GROUP        INTERNATIONAL, INC.    PREDECESSORS
                                            COMBINED          PERIOD FROM          ONE MONTH
                                           YEAR ENDED       JANUARY 1, 1995          ENDED
                                          DECEMBER 31,          THROUGH          DECEMBER 31,
                                              1995         NOVEMBER 30, 1995     1995 (NOTE 1)
                                          ------------    -------------------    -------------
<S>                                       <C>             <C>                    <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
  Net income (loss).....................    $  (581)             $  56               $ (74)
  Adjustments to reconcile net income
     (loss) to net cash provided by
     (used in) operating activities:
     Loss on sale of assets.............         18                 --                  --
     Depreciation and amortization......        628                778                  74
     Deferred income taxes..............       (298)                --                  --
     Changes in operating assets and
       liabilities, net of effects from
       acquisitions:
       Accounts receivable, net.........        592                 59                  10
       Prepaid expenses and other
          current assets................        (18)                --                 (30)
       Accounts payable.................        (49)                53                 (30)
       Deferred revenue.................         65                 30                 (26)
       Accrued liabilities..............      2,218                 47                  20
                                            -------              -----               -----
  Net cash provided by (used in)
     operating activities...............      2,575              1,023                 (56)
CASH FLOWS FROM INVESTING ACTIVITIES:
  Capital expenditures for property and
     equipment..........................        (87)              (827)                 --
  Decrease in other assets..............         --                  3                  10
                                            -------              -----               -----
Net cash provided by (used in) investing
  activities............................        (87)              (824)                 10
CASH FLOWS FROM FINANCING ACTIVITIES:
  Proceeds from long-term debt..........        306                 --                  --
  Principal payments on long-term
     debt...............................     (2,037)              (288)                 --
  Principal payments on notes payable...         --                 --                  (2)
                                            -------              -----               -----
  Net cash used in financing
     activities.........................     (1,731)              (288)                 (2)
                                            -------              -----               -----
Net increase (decrease) in cash.........        757                (89)                (48)
Cash at beginning of period.............        204                321                 232
                                            -------              -----               -----
Cash at end of period...................    $   961              $ 232               $ 184
                                            =======              =====               =====
</TABLE>
 
                            See accompanying notes.
 
                                      F-22
<PAGE>   98
 
                    WASTE CONNECTIONS, INC. AND PREDECESSORS
 
                         NOTES TO FINANCIAL STATEMENTS
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
             THE NINE MONTHS ENDED SEPTEMBER 30, 1998 IS UNAUDITED)
 
1. ORGANIZATION, BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
  Organization and Business
 
     Waste Connections, Inc. ("WCI" or "the Company") was incorporated in
Delaware on September 9, 1997 and commenced its operations on October 1, 1997
through the purchase of certain solid waste operations in Washington, as more
fully described below and in Note 2. The Company is a regional, integrated, non-
hazardous solid waste services company that provides collection, transfer,
disposal and recycling services to commercial, industrial and residential
customers.
 
  Basis of Presentation
 
     The consolidated financial statements of the Company include the accounts
of WCI and its wholly owned subsidiaries. All significant intercompany
transactions and balances have been eliminated in consolidation.
 
     The entities the Company acquired in September 1997 from Browning-Ferris
Industries, Inc. ("BFI") are collectively referred to herein as the Company's
predecessors. BFI acquired the predecessor operations at various times during
1995 and 1996, and prior to being acquired by BFI, the predecessors operated as
separate stand-alone businesses.
 
     During the periods in which the Company's predecessors operated as wholly
owned subsidiaries of BFI, they maintained intercompany accounts with BFI for
recording intercompany charges for costs and expenses, intercompany purchases of
equipment and additions under capital leases and intercompany transfers of cash,
among other transactions. It is not feasible to ascertain the amount of related
interest expense that would have been recorded in the historical financial
statements had the predecessors been operated as stand-alone entities. Charges
for interest expense were allocated to the Company's predecessors by BFI as
disclosed in the accompanying Statement of Operations. The interest expense
allocations from BFI are based on formulas that do not necessarily correspond
with the balances in the related intercompany accounts. Moreover, the financial
position and results of operations of the predecessors during this period may
not necessarily be indicative of the financial position or results of operations
that would have been realized had the predecessors been operated as stand-alone
entities. For the periods in which the predecessors operated as wholly owned
subsidiaries of BFI, the statements of operations include amounts allocated by
BFI to the predecessors for selling, general and administrative expenses based
on certain allocation methodologies which the Company's management believes are
reasonable.
 
     During the periods prior to their acquisition by BFI, the Company's
predecessors operated as separate stand-alone businesses. The acquisitions of
the predecessors by BFI were accounted for using the purchase method of
accounting, and the respective purchase prices were allocated to the fair values
of the assets acquired and liabilities assumed. Similarly, the Company's
acquisitions of the predecessors from BFI in September 1997 were accounted for
using the purchase method of accounting, and the purchase price was allocated to
the fair value of the assets acquired and liabilities assumed. Consequently, the
amounts of depreciation and amortization included in the statements of
operations for the periods presented reflect the changes in basis of the
underlying assets that were made as a result of the changes in ownership that
occurred during the periods presented. In addition, because the predecessor
companies operated independently and were not under common control or management
during these periods, and because different tax strategies may have influenced
their results of operations, the data may not be comparable to or indicative of
their operating results after their acquisition by BFI.
 
     Due to the manner in which BFI intercompany transactions were recorded as
described above, it is not feasible to present a detailed analysis of
transactions reflected in the net intercompany balance with BFI. The
                                      F-23
<PAGE>   99
                    WASTE CONNECTIONS, INC. AND PREDECESSORS
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
             THE NINE MONTHS ENDED SEPTEMBER 30, 1998 IS UNAUDITED)
 
change in the predecessors' combined intercompany balance with BFI (net of
income (loss) and initial investment in the acquired companies) was $642 and
$2,142 during the period ended December 31, 1996 and the nine months ended
September 30, 1997, respectively.
 
     The accompanying statements of operations and cash flows for the Company
and its predecessors for the years ended December 31, 1995, 1996 and 1997 are
comprised of the following entities for the periods indicated:
 
<TABLE>
<S>                              <C>
YEAR ENDED DECEMBER 31, 1995:
 
The Disposal Group Combined      Year ended December 31, 1995
Fibres International, Inc.       January 1, 1995 through November 30, 1995
                                   (BFI acquisition date)
Predecessors                     One month ended December 31, 1995 (represents the
                                   results of operations of Fibres International,
                                   Inc. subsequent to the BFI acquisition date)
 
YEAR ENDED DECEMBER 31, 1996:
 
The Disposal Group Combined      January 1, 1996 through July 31, 1996
                                   (BFI acquisition date)
Predecessors Combined            Period ended December 31, 1996 (represents the
                                   combined results of operations of The Disposal
                                   Group subsequent to the BFI acquisition date and
                                   the operations for the year ended December 31,
                                   1996 of Fibres International, Inc. which was
                                   acquired by BFI in 1995)
 
YEAR ENDED DECEMBER 31, 1997:
 
Predecessors Combined            Nine months ended September 30, 1997 (represents the
                                   combined results of operations for the nine month
                                   period of the entities acquired by BFI in 1995 and
                                   1996 described above)
Waste Connections, Inc.          Period from inception (September 9, 1997) through
                                   December 31, 1997
</TABLE>
 
     The Disposal Group Combined consists of three entities that were under
common control prior to their acquisition by BFI: Diamond Fab and Welding
Service, Inc., Buchmann Sanitary Service, Inc., and The Disposal Group.
 
  Interim Financial Information
 
     The unaudited interim consolidated financial statements as of September 30,
1998 and for the nine months ended September 30, 1998 have been prepared in
accordance with generally accepted accounting principles for interim financial
information. Accordingly, they do not include all of the information and
footnotes required by generally accepted accounting principles for complete
financial statements. In the opinion of management, all adjustments (consisting
of normal recurring adjustments) considered necessary
 
                                      F-24
<PAGE>   100
                    WASTE CONNECTIONS, INC. AND PREDECESSORS
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
             THE NINE MONTHS ENDED SEPTEMBER 30, 1998 IS UNAUDITED)
 
for a fair presentation have been included. Operating results for the nine
months ended September 30, 1998 are not necessarily indicative of the results
that may be expected for the year ended December 31, 1998.
 
  Use of Estimates
 
     The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the amounts reported in the financial statements and
accompanying notes. Actual results could differ from those estimates.
 
\   Common Stock Valuation
 
     In connection with the Company's organization and initial capitalization in
September 1997, the Company sold 2.3 million shares of common stock for $.01 per
share to certain directors, consultants, and management. As a result, the
Company recorded a non-recurring, non-cash stock compensation charge of $4,395
in the accompanying consolidated statement of operations, representing the
difference between the amount paid for the shares and the estimated fair value
of the shares of $1.92 per share on the date of sale. The estimated fair value
of the common shares was determined by the Company based on an independent
valuation of the common stock.
 
  Concentrations of Credit Risk
 
     Financial instruments that potentially subject the Company to
concentrations of credit risks consist primarily of accounts receivable. Credit
risk on accounts receivable is minimized as a result of the large and diverse
nature of the Company's customer base. The Company maintains an allowance for
losses based on the expected collectibility of accounts receivable. Credit
losses have been within management's expectations.
 
  Property and Equipment
 
     Property and equipment are stated at cost. Improvements or betterments
which significantly extend the life of an asset are capitalized. Expenditures
for maintenance and repair costs are charged to operations as incurred. The cost
of assets retired or otherwise disposed of and the related accumulated
depreciation are eliminated from the accounts in the year of disposal. Gains and
losses resulting from property disposals are included in other income (expense).
Depreciation is computed using the straight-line method over the estimated
useful lives of the assets.
 
     The estimated useful lives are as follows:
 
<TABLE>
<S>                              <C>
Machinery and equipment........  3 - 10 years
Rolling stock..................  10 years
Containers.....................  5 - 12 years
Furniture and fixtures.........  3 - 6 years
</TABLE>
 
     In connection with the BFI acquisitions (Note 2) the Company acquired
certain used property and equipment. This used property and equipment is being
depreciated using the straight-line method over its estimated remaining useful
lives, which range from one to nine years.
 
     Capitalized landfill costs include expenditures for land and related
airspace, permitting costs and preparation costs. Landfill permitting and
preparation costs represent only direct costs related to those activities,
including legal, engineering and construction. Interest is capitalized on
landfill permitting and
 
                                      F-25
<PAGE>   101
                    WASTE CONNECTIONS, INC. AND PREDECESSORS
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
             THE NINE MONTHS ENDED SEPTEMBER 30, 1998 IS UNAUDITED)
 
construction projects and other projects under development while the assets are
undergoing activities to ready them for their intended use. The interest
capitalization rate is based on the Company's weighted average cost of
indebtedness. No interest was capitalized during the nine months ended September
30, 1998. Landfill permitting, acquisition and preparation costs, excluding the
estimated residual value of land, are amortized as permitted airspace of the
landfill is consumed. Landfill preparation costs include the costs of
construction associated with excavation, liners, site berms and the installation
of leak detection and leachate collection systems. In determining the
amortization rate for a landfill, preparation costs include the total estimated
costs to complete construction of the landfills' permitted capacity.
Units-of-production amortization rates are determined annually for the Company's
operating landfill. The rates are based on estimates provided by the Company's
outside engineers and consider the information provided by surveys which are
performed at least annually.
 
  Goodwill
 
     Goodwill represents the excess of the purchase price over the fair value of
the net assets of the acquired entities (Note 2), and is amortized on a
straight-line basis over the period of expected benefit of 40 years. Accumulated
amortization amounted to $279 and $64 as of December 31, 1996 and 1997,
respectively.
 
     The Company continually evaluates the value and future benefits of its
intangibles. The Company assesses recoverability from future operations using
income from operations of the related acquired business as a measure. Under this
approach, the carrying value would be reduced if it becomes probable that the
Company's best estimate for expected future cash flows of the related business
would be less than the carrying amount of the intangible over the remaining
amortization period. For the period ending December 31, 1997, there were no
adjustments to the carrying amounts of intangibles resulting from these
evaluations.
 
  Fair Value of Financial Instruments
 
     The carrying values of the line of credit (Note 5) and other long-term debt
(Note 6) approximate their fair values as of December 31, 1997 and September 30,
1998, based on current incremental borrowing rates for similar types of
borrowing arrangements.
 
  Income Taxes
 
     The Company, The Disposal Group, and Fibres International, Inc., use the
liability method to account for income taxes. Under this method, deferred tax
assets and liabilities are determined based on differences between the financial
reporting and tax bases of assets and liabilities and are measured using the
enacted tax rates and laws that will be in effect when the differences are
expected to reverse.
 
     During the periods in which the predecessors were owned by BFI, their
operations were included in the consolidated income tax returns of BFI, and no
allocations of income taxes were reflected in the historical statements of
operations. For purposes of the combined predecessor financial statements,
current and deferred income taxes have been provided on a separate income tax
return basis.
 
  Revenue Recognition
 
     Revenues are recognized as services are provided. Certain customers are
billed in advance and, accordingly, recognition of the related revenues is
deferred until the services are provided.
 
                                      F-26
<PAGE>   102
                    WASTE CONNECTIONS, INC. AND PREDECESSORS
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
             THE NINE MONTHS ENDED SEPTEMBER 30, 1998 IS UNAUDITED)
 
  Start-Up and Integration Expenses
 
     During the period from inception (September 9, 1997) through December 31,
1997, the Company incurred certain start-up expenses relating to the formation
of the Company, primarily for legal and other professional services, and the
costs associated with recruiting the Company's initial management team. In
addition, the Company incurred certain integration expenses relating to the
Acquisitions (Note 2). These start-up and integration expenses have been charged
to operations as incurred.
 
     As described in Note 9, the Company issued warrants during the period from
inception (September 9, 1997) through December 31, 1997 to a bank in connection
with a line of credit and term loan payable, and to certain directors and
stockholders of the Company in connection with their guarantee of certain of the
Company's debt obligations. The fair value of these warrants is being amortized
into interest expense. During the period from inception (September 9, 1997)
through December 31, 1997, $710 relating to these warrants is included in
interest expense in the accompanying statement of operations of the Company.
 
  Stock-Based Compensation
 
     As permitted under the provisions of Financial Accounting Standards No. 123
"Accounting for Stock Based Compensation" ("SFAS 123"), the Company has elected
to account for stock-based compensation using the intrinsic value method
prescribed by Accounting Principles Board's Opinion No. 25 "Accounting for Stock
Issued to Employees" ("APB 25"). Under the intrinsic value method, compensation
cost is the excess, if any, of the quoted market price or fair value of the
stock at the grant date or other measurement date over the amount an employee
must pay to acquire the stock. None of the predecessor entities awarded
stock-based compensation to employees. Consequently, the related disclosures in
the accompanying financial statements and notes relate solely to the Company.
 
  Per Share Information
 
     In 1997, the Financial Accounting Standards Board ("FASB")issued Statement
No. 128, Earnings per Share. Statement 128 replaced the calculation of primary
and fully diluted earnings per share with basic and diluted earnings per share.
Unlike primary earnings per share, basic earnings per share excludes any
dilutive effects of options, warrants and convertible securities. Diluted
earnings per share is very similar to the previously reported fully diluted
earnings per share. All earnings per share amounts have been presented on the
basis set forth in Statement 128 (Note 11). Earnings per share data have not
been presented for the predecessor operations because such data is not
meaningful.
 
     Pro-forma basic net income (loss) per share is computed by dividing the net
income (loss) by the sum of the weighted average number of shares of common
stock outstanding and common shares issuable upon the conversion of all
outstanding shares of Redeemable Convertible Preferred Stock (Note 8) as though
such conversion occurred at the beginning of the period.
 
     Pro-forma diluted net income per share is computed by dividing net income
by the sum of the weighted average number of shares of common stock outstanding,
common shares issuable upon conversion of all outstanding shares of Redeemable
Convertible Preferred Stock (Note 8) as though such conversion occurred at the
beginning of the period, and common shares issuable upon the exercise of
outstanding common stock options and warrants (calculated using the treasury
stock method.)
 
                                      F-27
<PAGE>   103
                    WASTE CONNECTIONS, INC. AND PREDECESSORS
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
             THE NINE MONTHS ENDED SEPTEMBER 30, 1998 IS UNAUDITED)
 
  Closure and Post-Closure Costs
 
     The Company does not accrue for closure and post-closure costs related to
the Fairmead Landfill it operated in Madera County, California. Madera County as
required by state law, has established a special fund to pay such liabilities.
On June 5, 1998, the Company acquired the stock of Red Carpet Landfill, Inc. in
Oklahoma. Red Carpet is engaged in landfilling of municipal solid waste and
other acceptable waste streams in the county of Major, Oklahoma. As a result of
the acquisition, the Company is required to accrue for closure and post-closure
costs related to the landfill. Accrued closure and post-closure costs include
the current and non-current portion of accruals associated with obligations for
closure and post-closure of the landfill. The Company, based as input from its
outside engineers, estimates its future closure and post-closure monitoring and
maintenance costs for solid waste landfills based on its interpretation of the
technical standards of the U.S. Environmental Protection Agency's Subtitle D
regulations and the air emissions standards under the Clean Air Act as they are
being applied on a state-by-state basis. Closure and post-closure monitoring and
maintenance costs represent the costs related to cash expenditures yet to be
incurred when a landfill facility ceases to accept waste and closes. Accruals
for closure and post-closure monitoring and maintenance requirements in the U.S.
consider final capping of the site, site inspection, groundwater monitoring,
leachate management, methane gas control and recovery, and operating and
maintenance costs to be incurred during the period after the facility closes.
Certain of these environmental costs, principally capping and methane gas
control costs, are also incurred during the operating life of the site in
accordance with the landfill operation requirements of Subtitle D and the air
emissions standards. Reviews of the future requirements for closure and
post-closure monitoring and maintenance costs for the Company's operating
landfills are performed by the Company's consulting engineers at least annually
and are the basis upon which the Company's estimates of these future costs and
the related accrual rates are revised. The Company provides accruals for these
estimated costs as the remaining permitted airspace of such facilities is
consumed. As of September 30, 1998, the Company estimates that total closure and
post closure costs relating to the Red Carpet Landfill will be approximately
$929,000, of which approximately $491,000 has been accrued as of September 30,
1998 and included in other long-term liabilities in the accompanying balance
sheet. The states in which the Company operates its landfills require a
specified portion of these accrued closure and post-closure obligations to be
funded at any point in time.
 
  New Accounting Pronouncements
 
     In February 1997, the FASB issued Statement No. 129, Disclosure of
Information about Capital Structure, which is effective for financial statements
for periods ending after December 15, 1997. This statement establishes standards
for disclosing information about an entity's capital structure. Adoption of
Statement 129 will have no impact on the Company's existing disclosures.
 
     In June 1997, the FASB issued Statement No. 130, Reporting Comprehensive
Income. Statement 130 establishes standards for reporting and disclosure of
comprehensive income and its components (revenues, expenses, gains, and losses)
in a full set of general-purpose financial statements. Statement 130, which is
effective for fiscal years beginning after December 15, 1997, requires
reclassification of financial statements for earlier periods to be provided for
comparative purposes. The Company anticipates that implementing the provisions
of Statement 130 will not have a significant impact on the Company's existing
disclosures.
 
     In June 1997, the FASB issued Statement No. 131, Disclosure About Segments
of an Enterprise and Related Information. Statement 131 establishes standards
for the way that public business enterprises report information about operating
segments. It also establishes standards for related disclosures about products
and
                                      F-28
<PAGE>   104
                    WASTE CONNECTIONS, INC. AND PREDECESSORS
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
             THE NINE MONTHS ENDED SEPTEMBER 30, 1998 IS UNAUDITED)
 
services, geographic areas and major customers. Statement 131 is effective for
fiscal years beginning after December 15, 1997. In the initial year of
application, comparative information for earlier years must be restated. The
Company anticipates that implementing the provisions of Statement 131 will not
have a significant impact on the Company's existing disclosures.
 
 2. ACQUISITIONS
 
  Browning-Ferris Industries Related
 
     On September 29, 1997, the Company purchased all of the outstanding stock
of Browning-Ferris Industries of Washington, Inc. and Fibres International, Inc.
from BFI (collectively the "Acquisitions"). The total purchase price for the
Acquisitions was approximately $15,036, comprised principally of $11,493 in cash
and promissory notes payable to BFI totaling $3,543. Of the combined $15,036
purchase price, $9,578 was recorded as goodwill and $150 was assigned to a
non-competition agreement. The Acquisitions were accounted for in accordance
with the purchase method of accounting and, accordingly, the net assets acquired
were included in the Company's consolidated balance sheet based upon their
estimated fair values on the date of the Acquisitions. The Company's
consolidated statement of operations includes the revenues and expenses of the
acquired businesses after the effective date of the transaction.
 
     Certain items affecting the purchase price and the allocation are
preliminary. A summary of the preliminary purchase price allocation as of
December 31, 1997 for the Acquisitions is as follows:
 
<TABLE>
<S>                                                          <C>
Acquired assets:
  Accounts receivable....................................    $ 2,919
  Prepaid expenses and other current assets..............        287
  Property and equipment.................................      4,106
  Goodwill...............................................      9,578
  Non-competition agreement..............................        150
Assumed liabilities:
  Deferred revenue.......................................       (428)
  Accounts payable and accrued liabilities...............        (26)
  Accrued losses on acquired contracts...................     (1,018)
  Deferred income taxes..................................       (532)
                                                             -------
                                                             $15,036
                                                             =======
</TABLE>
 
     During the nine months ended September 30, 1998, the Company increased the
accrual for losses on acquired contracts and goodwill by approximately $291 to
reflect revised estimates of additional losses on the acquired contracts that
are expected to be incurred.
 
  Madera Disposal Systems, Inc.
 
     On February 23, 1998, the Company purchased all of the outstanding stock of
Madera Disposal Systems, Inc. ("Madera") effective February 1, 1998, pursuant to
a Stock Purchase Agreement (the "Agreement"). The Agreement requires the Company
to pay to the shareholders of Madera $9,579 in cash (a portion of which was used
to repay Madera outstanding debt on the date of acquisition and which is subject
to other adjustments as specified in the Agreement), 1,000,000 shares of the
Company's common stock with a fair market value of $7,500 (the "Stock"),
warrants to purchase 200,000 shares of the Company's common stock
                                      F-29
<PAGE>   105
                    WASTE CONNECTIONS, INC. AND PREDECESSORS
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
             THE NINE MONTHS ENDED SEPTEMBER 30, 1998 IS UNAUDITED)
 
at $4.00 per share with a fair market value of $954 (the "Warrants") and other
contingent consideration. The Agreement provides that in the event the Company
does not complete an initial public offering ("IPO") of its stock by March 31,
1999, with aggregate gross proceeds of at least $5,000, the Company may be
required to repurchase the Stock and the Warrants from the former shareholders
of Madera for $2,800 in cash if certain other conditions are also met.
 
     The Madera acquisition has been accounted for in accordance with the
purchase method of accounting. The total purchase price and the excess of the
purchase price over the fair value of the net assets acquired in the Madera
acquisition were approximately $18,213 and $14,580, respectively.
 
     Certain items affecting the purchase price and the allocation are
preliminary. A summary of the preliminary purchase price allocation for the
Madera acquisition is as follows:
 
<TABLE>
<S>                                                             <C>
Acquired assets:
  Cash......................................................    $ 1,388
  Accounts receivable.......................................        905
  Prepaid expenses and other current assets.................        141
  Property and equipment....................................      2,100
  Long-term franchise agreements and contracts..............        725
  Goodwill..................................................     14,580
Assumed liabilities:
  Accounts payable and accrued liabilities..................     (1,120)
  Accrued losses on acquired contracts......................       (306)
  Notes payable.............................................       (200)
                                                                -------
                                                                $18,213
                                                                =======
</TABLE>
 
  Arrow Sanitary Service, Inc.
 
     On June 17, 1998, the Company purchased all of the outstanding stock of
Arrow Sanitary Service, Inc. ("Arrow") effective June 1, 1998, pursuant to a
Stock Purchase Agreement (the "Arrow Agreement"). The Arrow Agreement required
the Company to pay the shareholders of Arrow $7,944 in cash (a portion of which
was used to repay the Arrow outstanding debt on the date of the acquisition and
a portion of which is subject to other adjustments as specified in the Arrow
Agreement), 213,750 shares of the Company's common stock with an estimated fair
market value of $3,045.
 
     The Arrow acquisition has been accounted for in accordance with the
purchase method of accounting. The total purchase price and the excess of the
purchase price over the fair value of the net assets acquired in the Arrow
acquisition were approximately $11,255 and $10,528, respectively.
 
                                      F-30
<PAGE>   106
                    WASTE CONNECTIONS, INC. AND PREDECESSORS
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
             THE NINE MONTHS ENDED SEPTEMBER 30, 1998 IS UNAUDITED)
 
     Certain items affecting the purchase price and the allocation are
preliminary. A summary of the preliminary purchase price allocation for the
Arrow acquisition is as follows:
 
<TABLE>
<S>                                                           <C>
Acquired assets:
  Accounts receivable.......................................  $   575
  Prepaid expenses and other current assets.................       10
  Property and equipment....................................      313
  Covenant not to compete...................................       50
  Goodwill..................................................   10,528
Assumed liabilities:
  Accounts payable and accrued liabilities..................     (221)
                                                              -------
                                                              $11,255
                                                              =======
</TABLE>
 
  Predecessor Acquisitions
 
     As described in Note 1, BFI acquired for cash and debt Fibres
International, Inc. on November 30, 1995 and The Disposal Group Combined on July
31, 1996 in transactions that were accounted for as purchases. Accordingly, the
respective purchase prices were allocated to the fair values of the assets
acquired and liabilities assumed. The following presents purchase price
information for these acquisitions:
 
<TABLE>
<CAPTION>
                                                                     THE
                                                    FIBRES        DISPOSAL
                                                INTERNATIONAL,      GROUP
                                                     INC.         COMBINED
                                                --------------    ---------
<S>                                             <C>               <C>
Tangible assets acquired......................      $5,076         $2,076
Goodwill......................................       4,187          2,671
Assumed liabilities...........................        (969)           (33)
                                                    ------         ------
                                                    $8,294         $4,714
                                                    ======         ======
</TABLE>
 
3. PROPERTY AND EQUIPMENT
 
     Property and equipment as of December 31, 1996 and 1997 and September 30,
1998 consists of the following:
 
<TABLE>
<CAPTION>
                                    PREDECESSORS             COMPANY
                                      COMBINED     ----------------------------
                                    DECEMBER 31,   DECEMBER 31,   SEPTEMBER 30,
                                        1996           1997           1998
                                    ------------   ------------   -------------
                                                                   (UNAUDITED)
<S>                                 <C>            <C>            <C>
Land and buildings................     $2,314         $   --         $ 3,737
Machinery and equipment...........        146             60           1,461
Rolling stock.....................      2,068          2,353           8,165
Containers........................      1,084          1,995           6,408
Furniture and fixtures............        137             67             851
                                       ------         ------         -------
                                        5,749          4,475          20,622
Less accumulated depreciation.....       (680)          (290)         (2,184)
                                       ------         ------         -------
                                       $5,069         $4,185         $18,438
                                       ======         ======         =======
</TABLE>
 
                                      F-31
<PAGE>   107
                    WASTE CONNECTIONS, INC. AND PREDECESSORS
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
             THE NINE MONTHS ENDED SEPTEMBER 30, 1998 IS UNAUDITED)
 
     Combined depreciation expense for the predecessor operations was $1,304,
$1,101, and $789 for the years ended December 31, 1995 and 1996, and the nine
months ended September 30, 1997, respectively. The Company's depreciation
expense for the period from inception (September 9, 1997) through December 31,
1997 was $290.
 
4. OTHER ASSETS
 
     Other assets as of December 31, 1996 and 1997 and September 30, 1998
consist of the following:
 
<TABLE>
<CAPTION>
                                            PREDECESSORS             COMPANY
                                              COMBINED     ----------------------------
                                            DECEMBER 31,   DECEMBER 31,   SEPTEMBER 30,
                                                1996           1997           1998
                                            ------------   ------------   -------------
                                                                           (UNAUDITED)
<S>                                         <C>            <C>            <C>
Long-term franchise agreements and
  contracts...............................      $ --           $ --          $1,048
Non-competition agreement, net............        --            142             585
Restricted Cash...........................        --             --           1,895
Other.....................................       369             27             326
                                                ----           ----          ------
                                                $369           $169          $3,854
                                                ====           ====          ======
</TABLE>
 
     Related to certain of the Acquisitions (Note 2), the Company acquired
certain long-term franchise agreements and contracts and entered into a
non-competition agreement. The estimated fair value of the acquired long-term
franchise agreements and contracts was determined by management based on the
discounted net cash flows associated with the agreements and contracts. The
amounts assigned to the franchise agreements and contracts is being amortized on
a straight-line method over the remaining term of the related agreements (11
years). Accumulated amortization amounted to $62 as of September 30, 1998. The
estimated fair value of the non-competition agreement was determined by
management based on the discounted adjusted operating income stream that would
have otherwise been subject to competition. The amount assigned to the
non-competition agreement is being amortized on a straight-line method over the
term of the agreement (five years). Accumulated amortization amounted to $8 as
of December 31, 1997 and $36 as of September 30, 1998.
 
5. LINE OF CREDIT
 
     On September 30, 1997, the Company obtained a revolving line of credit (the
"Line") from a bank (the "Bank"). The maximum amount available under the terms
of the Line was $2,000 and borrowings bore interest based on the prime rate plus
1.5% (aggregating 10.0% at December 31, 1997). Interest was payable monthly and
the Line was to expire on September 29, 1998. Borrowings under the Line were
secured by substantially all of the Company's assets and were subordinate to the
notes payable to BFI (Note 6) with respect to certain specified assets. The Line
was personally guaranteed by certain officers and stockholders of the Company
(Note 9). As of December 31, 1997, $600 was outstanding under the Line.
 
     Management used borrowings from a new credit facility obtained in January
1998 (Note 12) to pay off amounts outstanding under the Line, and as such, these
amounts have been included in long-term debt as of December 31, 1997.
 
                                      F-32
<PAGE>   108
                    WASTE CONNECTIONS, INC. AND PREDECESSORS
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
             THE NINE MONTHS ENDED SEPTEMBER 30, 1998 IS UNAUDITED)
 
 6. OTHER LONG-TERM DEBT
 
     Other long-term debt consists of the following as of December 31, 1997:
 
<TABLE>
<S>                                                             <C>
Term loan payable to the Bank bearing interest at the Bank's
  prime rate plus 2.0% (aggregating 10.5% as of December 31,
  1997); monthly principal payments of $76 plus interest
  beginning October 1997 through August 2002; all
  outstanding principal and interest are due September 2002;
  secured by substantially all of the Company's assets;
  subordinate to the notes payable to BFI with respect to
  certain specified assets..................................     $5,343
Note payable to BFI bearing interest at 6.0%; all
  outstanding principal and interest are due December 1997;
  secured by substantially all of the Company's accounts
  receivable................................................        319
Note payable to BFI bearing interest at 10.0%; quarterly
  payments of interest beginning December 1997; all
  outstanding principal and interest are due March 1998;
  secured by substantially all of WCII's assets.............        500
                                                                 ------
                                                                 $6,162
                                                                 ======
</TABLE>
 
     The term loan payable to the Bank and the notes payable to BFI were
personally guaranteed by certain officers and stockholders of the Company (Note
9).
 
     As of December 31, 1997, aggregate contractual future principal payments by
calendar year on long-term debt are due as follows:
 
<TABLE>
<S>                                   <C>
1998................................  $1,736
1999................................     917
2000................................     917
2001................................     917
2002................................     917
Thereafter..........................     758
                                      ------
                                      $6,162
                                      ======
</TABLE>
 
     Management used borrowings from a new credit facility obtained in January
1998 (Note 12) to pay off all amounts outstanding under the term loan payable to
the Bank and all notes payable to BFI, and as such, these amounts have been
classified as long-term debt as of December 31, 1997.
 
     On June 16, 1998, the Company completed a $1.8 million tax-exempt bond
financing for its Madera subsidiary. These funds will be used for specified
capital expenditures and improvements, including installation of a landfill gas
recovery system. The bonds issued mature on May 1, 2016 and bear interest at
variable rates based on market conditions for California tax exempt bonds. The
bonds are backed by a letter of credit issued by BankBoston under the Credit
Facility for $1.8 million. Funds from the bond offering are held by a trustee
until the capital expenditures are completed. The unused funds are classified as
restricted cash and included in other assets on the accompanying consolidated
balance sheet. The capital expenditures funded by the bonds are expected to be
substantially completed by December 31, 1998.
 
                                      F-33
<PAGE>   109
                    WASTE CONNECTIONS, INC. AND PREDECESSORS
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
             THE NINE MONTHS ENDED SEPTEMBER 30, 1998 IS UNAUDITED)
 
 7. COMMITMENTS AND CONTINGENCIES
 
COMMITMENTS
 
  Leases
 
     The Company leases its facilities and certain equipment under
non-cancelable operating leases for periods ranging from one to five years.
Combined rent expense for the predecessor operations was $398, $412, and $441
for the years ended December 31, 1995 and 1996, and the nine months ended
September 30, 1997, respectively. The Company's rent expense under operating
leases during the period from inception (September 9, 1997) through December 31,
1997 amounted to $52.
 
     As of December 31, 1997, future minimum lease payments under these leases,
by calendar year, are as follows:
 
<TABLE>
<S>                                     <C>
1998..................................  $206
1999..................................   196
2000..................................   192
2001..................................   140
2002..................................    10
                                        ----
                                        $744
                                        ====
</TABLE>
 
  Performance Bonds and Letters of Credit
 
     Municipal solid waste collection contracts may require performance bonds or
other means of financial assurance to secure contractual performance. As of
December 31, 1997, the Company had provided customers and various regulatory
authorities with bonds and letters of credit of approximately $800 to secure its
obligations. The Company's new credit facility (Note 12) provides for the
issuance of letters of credit in an amount up to $5,000, but any letters of
credit issued reduce the availability of borrowings for acquisitions or other
general corporate purposes. If the Company were unable to obtain surety bonds or
letters of credit in sufficient amounts or at acceptable rates, it could be
precluded from entering into additional municipal solid waste collection
contracts or obtaining or retaining landfill operating permits.
 
CONTINGENCIES
 
  Environmental Risks
 
     The Company is subject to liability for any environmental damage that its
solid waste facilities may cause to neighboring landowners or residents,
particularly as a result of the contamination of soil, groundwater or surface
water, and especially drinking water, including damage resulting from conditions
existing prior to the acquisition of such facilities by the Company. The Company
may also be subject to liability for any off-site environmental contamination
caused by pollutants or hazardous substances whose transportation, treatment or
disposal was arranged by the Company or its predecessors. Any substantial
liability for environmental damage incurred by the Company could have a material
adverse effect on the Company's financial condition, results of operations or
cash flows. As of December 31, 1997 and September 30, 1998, the Company is not
aware of any such environmental liabilities.
 
                                      F-34
<PAGE>   110
                    WASTE CONNECTIONS, INC. AND PREDECESSORS
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
             THE NINE MONTHS ENDED SEPTEMBER 30, 1998 IS UNAUDITED)
 
  Legal Proceedings
 
     In the normal course of its business and as a result of the extensive
governmental regulation of the solid waste industry, the Company may
periodically become subject to various judicial and administrative proceedings
involving federal, state or local agencies. In these proceedings, an agency may
seek to impose fines on the Company or to revoke or deny renewal of an operating
permit held by the Company. From time to time the Company may also be subject to
actions brought by citizens' groups or adjacent landowners or residents in
connection with the permitting and licensing of landfills and transfer stations,
or alleging environmental damage or violations of the permits and licenses
pursuant to which the Company operates.
 
     In addition, the Company may become party to various claims and suits
pending for alleged damages to persons and property, alleged violations of
certain laws and alleged liabilities arising out of matters occurring during the
normal operation of the waste management business. However, as of December 31,
1997 and September 30, 1998 there is no current proceeding or litigation
involving the Company that the Company believes will have a material adverse
impact on the Company's business, financial condition, results of operations or
cash flows.
 
     During the period from January 1, 1996 through July 31, 1996, The Disposal
Group won a lawsuit against the city of Vancouver, Washington relating to the
city's annexation of certain territories served by The Disposal Group. The
Disposal Group received approximately $2.6 million from the lawsuit, which is
included in other income in the accompanying statement of operations.
 
  Employees
 
     Approximately 55 drivers and mechanics at the Company's Vancouver,
Washington operation are represented by the Teamsters Union, with which
Browning-Ferris Industries of Washington, Inc., the Company's predecessor in
Vancouver, entered a four-year collective bargaining agreement in January 1997.
Approximately 11 drivers at Arrow Sanitary Services, Inc. ("Arrow"), a wholly
owned subsidiary of the Company, are represented by the Teamsters Union, with
which Arrow entered into a three-year collective bargaining agreement in March
1998. In addition, in July 1997, the employees at the Company's facility in
Issaquah, Washington, adopted a measure to select a union to represent them in
labor negotiations with management. The union and management operated under a
one-year negotiating agreement, that ended July 27, 1998.
 
     Since July 27, 1998, negotiations have continued between the union and the
Company, although the union is permitted to call a strike or call for
arbitration of the outstanding issues. The employees at Issaquah have filed to
decertify the union, and the union has filed a claim with the National Labor
Relation Board to attempt to block the decertification. The Company is not aware
of any other organizational efforts among its employees and believes that its
relations with its employees are good.
 
 8. REDEEMABLE CONVERTIBLE PREFERRED STOCK
 
     In September 1997, the Company received net proceeds of $6,992 from the
sale of 2,499,998 shares of redeemable convertible preferred stock (the
"Preferred Stock"). The Preferred Stock accrues cumulative dividends at the rate
of $.098 per share annually. Accumulated and unpaid dividends on Preferred Stock
amounted to $61 as of December 31, 1997. The Preferred Stock and any accumulated
and unpaid dividends are convertible at the holder's option into shares of the
Company's common stock at the calculated rate of $2.80 per share divided by the
"Conversion Price" subject to certain anti-dilution adjustments. Each share was
                                      F-35
<PAGE>   111
                    WASTE CONNECTIONS, INC. AND PREDECESSORS
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
             THE NINE MONTHS ENDED SEPTEMBER 30, 1998 IS UNAUDITED)
 
automatically converted into common stock immediately upon the closing of the
Company's initial public offering of common stock at a Conversion Price of $2.80
per share.
 
     Each share of Preferred Stock is redeemable, at the holder's option, during
the period from April 1, 1999 through October 1, 1999 for $4.20 per share plus
any accumulated and unpaid dividends. The difference between the carrying value
of the Preferred Stock and the redemption value (including accumulated
dividends) is being accreted using the interest method through the earliest
redemption date. The redemption of the Preferred Stock is not mandatory if it
would cause the Company to incur additional indebtedness or if it is prohibited
under any of the Company's then existing debt agreements.
 
     The preferred stockholders are entitled to one vote for each share of
common stock into which such shares can be converted, and are also entitled to
liquidation preferences equal to the greater of the initial purchase price per
share ($2.80) plus any accumulated and unpaid dividends, plus the greater of
$4.20 per share or an amount which equals an internal rate of return of 50% to
the investor. After receiving such preference, the holders of the preferred
stock share remaining proceeds with the common stockholders on an as converted
basis.
 
 9. STOCKHOLDERS' EQUITY
 
  Common Stock
 
     Of the 47,700,000 shares of common stock authorized but unissued as of
December 31, 1997, the following shares were reserved for issuance:
 
<TABLE>
<S>                                                 <C>
Preferred Stock...................................  2,521,874
Madera acquisition (Note 2).......................  1,200,000
Stock option plan.................................  1,200,000
Stock purchase warrants...........................  1,056,000
                                                    ---------
                                                    5,977,874
                                                    =========
</TABLE>
 
  Stockholder Notes Receivable
 
     In December 1997, the Company provided loans in the aggregate amount of $82
to certain employees, who are also common stockholders, for the purchase of
shares of the Company's Preferred Stock. The notes bear interest at 8%, are due
on January 1, 1999 and are secured by the Preferred Stock purchased and common
stock owned by the employees.
 
  Stock Options
 
     In November 1997, the Company's Board of Directors adopted a stock option
plan in which all officers, employees, directors and consultants may participate
(the "Option Plan"). Options granted under the Option Plan may either be
incentive stock options or nonqualified stock options (the "Options") and they
will generally have a term of 10 years from the date of grant and will vest over
periods determined at the date of grant. The exercise prices of the options are
determined by the Company's Board of Directors and will be at least 100% or 110%
of the fair market value of the Company's common stock on the date of grant as
provided for in the Option Plan.
 
     In connection with the Option Plan, the Company's Board of Directors
approved the reservation of 1,200,000 shares of common stock for issuance
thereunder. As of December 31, 1997 and September 30, 1998,
                                      F-36
<PAGE>   112
                    WASTE CONNECTIONS, INC. AND PREDECESSORS
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
             THE NINE MONTHS ENDED SEPTEMBER 30, 1998 IS UNAUDITED)
 
35,000 options to purchase common stock were exercisable under the Option Plan.
In addition, as of December 31, 1997 and September 30, 1998, options for 671,500
and 160,450 shares, respectively of common stock were available for future
grants under the Option Plan.
 
     A summary of the Company's stock option activity and related information
during the period from inception (September 9, 1997) through December 31, 1997
and the nine months ended September 30, 1998 is presented below:
 
<TABLE>
<CAPTION>
                                           NUMBER OF        WEIGHTED AVERAGE
                                        SHARES (OPTIONS)     EXERCISE PRICE
                                        ----------------    ----------------
<S>                                     <C>                 <C>
Outstanding at inception..............            --             $  --
Granted...............................       528,500              4.92
Forfeited.............................            --                --
Exercised.............................            --                --
                                           ---------
Outstanding as of December 31, 1997...       528,500              4.92
Granted (unaudited)...................       511,050              9.59
Forfeited (unaudited).................            --                --
Exercised (unaudited).................            --                --
                                           ---------
Outstanding as of September 30, 1998
  (unaudited).........................     1,039,550              7.21
                                           =========
</TABLE>
 
     The following table summarizes information about stock options outstanding
as of December 31, 1997 and September 30, 1998:
 
<TABLE>
<CAPTION>
                                    DECEMBER 31, 1997       SEPTEMBER 30, 1998
                                   -------------------    -----------------------
                                              WEIGHTED                   WEIGHTED
                                              AVERAGE                    AVERAGE
                                              EXERCISE                   EXERCISE
         EXERCISE RANGE            SHARES      PRICE        SHARES        PRICE
         --------------            -------    --------    -----------    --------
                                                                (UNAUDITED)
<S>                                <C>        <C>         <C>            <C>
  $ 2.80 to 5.00.................  385,500      2.85         589,800       2.91
  $ 6.00 to 9.50.................       --        --          72,500       8.54
  $10.50 to 12.50................  143,000     10.50         245,000      11.07
  $15.19 to 19.00................       --        --          95,750      17.24
  $21.00 to 22.13................       --        --          36,500      21.90
                                   -------     -----       ---------      -----
                                   528,500      4.92       1,039,550       7.21
                                   =======     =====       =========      =====
</TABLE>
 
     The weighted average remaining contractual life of stock options
outstanding as of December 31, 1997, was 9.4 years.
 
     Pro Forma information regarding net income and earnings per share is
required by SFAS 123, and has been determined as if the Company had accounted
for its employee stock options under the fair value method of that Statement.
The fair value for these options was estimated at the date of grant using a
Black-Scholes option pricing model with the following weighted-average
assumptions for the period from inception (September 9, 1997) through December
31, 1997: risk-free interest rate of 6%; dividend yield of zero; volatility
factor of the expected market price of the Company's common stock of .40; and a
weighted-average expected life of the option of 4 years.
 
                                      F-37
<PAGE>   113
                    WASTE CONNECTIONS, INC. AND PREDECESSORS
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
             THE NINE MONTHS ENDED SEPTEMBER 30, 1998 IS UNAUDITED)
 
     The Black-Scholes option valuation model was developed for us in estimating
the fair value of traded options which have no vesting restrictions and are
fully transferable. In addition, option valuation models require the input of
highly subjective assumptions including the expected stock price volatility.
Because the Company's employee stock options have characteristics significantly
different from those of traded options, and because changes in the subjective
input assumptions can materially affect the fair value estimate, in management's
opinion, the existing models do not necessarily provide a reliable single
measure of the fair value of its employee stock options.
 
     For purposes of pro forma disclosures, the estimated fair value of the
options is amortized to expense over the options' vesting period. The Company's
pro forma net loss and pro forma basic net loss per share for the period from
inception (September 9, 1997) through December 31, 1997 were $(5,070) and
$(2.99) per share, respectively.
 
     During the nine months ended September 30, 1998, the Company recorded
deferred stock compensation of $821 relating to stock options granted during the
period with exercise prices less than the estimated fair value of the Company's
common stock on the date of grant. The deferred stock compensation is being
amortized into expense over the vesting periods of the stock options which
generally range from 1 to 3 years. Compensation expense of $322 was recorded
during the nine months ended September 30, 1998 relating to these options, and
the remaining $499 will be amortized into expense in future periods.
 
  Stock Purchase Warrants
 
     In September 1997, the Company issued a warrant to purchase 200,000 shares
of the Company's common stock to the Bank that provided the Line and term loan
payable (Notes 5 and 6). The exercise price of the warrant is $.01 per share.
The warrant was valued at $382 on its date of issuance using the Black-Scholes
pricing model with an assumed stock price volatility of .40, risk-free interest
rate of 6.0%, estimated fair value of the common stock of $1.92 per share and an
expected life of 7 years. The value assigned to the warrant was reflected as a
discount on long-term debt. The discount was fully accreted to interest expense
using the straight-line method over the expected term of the debt agreements
(approximately three months).
 
     In connection with their guarantee of certain of the Company's debt
obligations (Notes 5 and 6), the Company issued warrants to purchase 841,000
shares of the Company's common stock to certain directors and stockholders of
the Company. The exercise price of the warrants is $2.80 per share. The warrants
were valued at $328 on their date of issuance using the Black-Scholes pricing
model with an assumed stock price volatility of .40, risk-free interest rate of
6.0%, estimated fair value of the common stock of $1.92 per share and expected
lives of 3 years. The value assigned to these warrants was fully amortized to
interest expense over the expected term of the debt agreements (approximately
three months).
 
     In December 1997, the Company issued to consultants warrants to purchase
15,000 shares of the Company's common stock. Warrants to purchase 10,000 and
5,000 shares of common stock had exercise prices of $5.00 per share and $2.80
per share, respectively.
 
     In February 1998, the Company granted warrants to an employee to purchase
50,000 shares of the Company's common stock at $2.80 per share. The Company
recorded stock compensation expense of approximately $235 relating to these
warrants.
 
                                      F-38
<PAGE>   114
                    WASTE CONNECTIONS, INC. AND PREDECESSORS
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
             THE NINE MONTHS ENDED SEPTEMBER 30, 1998 IS UNAUDITED)
 
  Initial Public Offering
 
     In May 1998, the Company sold in its initial public offering, a total of
2,300,000 shares of common stock at $12.00 per share. The net proceeds after
underwriters' commissions and fees and other costs associated with the offering
were approximately $23,986. In connection with the offering, the redeemable
convertible preferred stock was converted into common stock, and the redemption
provisions of the common stock issued in connection with the Madera acquisition
(Note 2) expired.
 
10. INCOME TAXES
 
     The provision (benefit) for income taxes for the periods ended December 31,
1995 and 1996, the nine months ended September 30, 1997 and for the period from
inception (September 9, 1997) through December 31, 1997 consists of the
following:
 
<TABLE>
<CAPTION>
                                              PREDECESSORS
                      -------------------------------------------------------------
                                                 FIBRES          THE DISPOSAL GROUP   WASTE CONNECTIONS, INC.
                                           INTERNATIONAL, INC.        COMBINED             CONSOLIDATED
                      THE DISPOSAL GROUP       PERIOD FROM          PERIOD FROM        PERIOD FROM INCEPTION
                           COMBINED          JANUARY 1, 1995      JANUARY 1, 1996       (SEPTEMBER 9, 1997)
                          YEAR ENDED             THROUGH              THROUGH                 THROUGH
                      DECEMBER 31, 1995     NOVEMBER 30, 1995      JULY 31, 1996         DECEMBER 31, 1997
                      ------------------   -------------------   ------------------   -----------------------
<S>                   <C>                  <C>                   <C>                  <C>
Current:
  Federal............       $  --                 $ 29                  $207                   $  38
  State..............          --                   --                    --                      --
Deferred:
  Federal............        (298)                  --                   298                    (370)
  State..............          --                   --                    --                      --
                            -----                 ----                  ----                   -----
                            $(298)                $ 29                  $505                   $(332)
                            =====                 ====                  ====                   =====
</TABLE>
 
     Significant components of the Company's deferred income tax assets and
liability were as follows as of December 31, 1996 and 1997:
 
<TABLE>
<CAPTION>
                                                         PREDECESSORS
                                                           COMBINED      COMPANY
                                                             1996         1997
                                                         ------------    -------
<S>                                                      <C>             <C>
Deferred income tax assets:
  Accounts receivable reserves.........................     $   32       $    8
  Amortization.........................................         --          290
  Accrued expenses.....................................          4           --
  Vacation accrual.....................................          2           15
  Net operating losses.................................        208           54
                                                            ------       ------
Total deferred income tax assets.......................        246          367
Deferred income tax liability:
  Depreciation.........................................         --         (529)
                                                            ------       ------
Net deferred income tax asset (liability)..............        246         (162)
Less valuation allowance...............................       (246)          --
                                                            ------       ------
                                                            $   --       $ (162)
                                                            ======       ======
</TABLE>
 
                                      F-39
<PAGE>   115
                    WASTE CONNECTIONS, INC. AND PREDECESSORS
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
             THE NINE MONTHS ENDED SEPTEMBER 30, 1998 IS UNAUDITED)
 
     The differences between the Company's provision (benefit) for income taxes
as presented in the accompanying statements of operations and benefit for income
taxes computed at the federal statutory rate is comprised of the items shown in
the following table as a percentage of pre-tax income (loss):
 
<TABLE>
<CAPTION>
                                                                  PREDECESSORS
                                 -------------------------------------------------------------------------------
                                                                                                 THE DISPOSAL
                                                           FIBRES                                    GROUP
                                   THE DISPOSAL      INTERNATIONAL, INC.                           COMBINED
                                       GROUP             PERIOD FROM                              PERIOD FROM
                                     COMBINED          JANUARY 1, 1995       PREDECESSORS       JANUARY 1, 1996
                                    YEAR ENDED             THROUGH          ONE MONTH ENDED         THROUGH
                                 DECEMBER 31, 1995    NOVEMBER 30, 1995    DECEMBER 31, 1995     JULY 31, 1996
                                 -----------------   -------------------   -----------------   -----------------
<S>                              <C>                 <C>                   <C>                 <C>
Income tax provision (benefit)
  at the statutory rate........        (34.0%)               34.0%                34.0%               34.0%
Effect of valuation
  allowance....................            --                   --               (34.0%)             (16.0%)
                                      -------              -------              -------            --------
                                       (34.0%)               34.0%                   --               18.0%
                                      =======              =======              =======            ========
</TABLE>
 
<TABLE>
<CAPTION>
                                                         PREDECESSORS
                                             -------------------------------------
                                                                   PREDECESSORS      WASTE CONNECTIONS, INC.
                                                                     COMBINED             CONSOLIDATED
                                               PREDECESSORS         NINE MONTHS       PERIOD FROM INCEPTION
                                                 COMBINED              ENDED           (SEPTEMBER 9, 1997)
                                               PERIOD ENDED        SEPTEMBER 30,             THROUGH
                                             DECEMBER 31, 1996         1997             DECEMBER 31, 1997
                                             -----------------   -----------------   -----------------------
<S>                                          <C>                 <C>                 <C>
Income tax benefit at the statutory rate...        (34.0%)             (34.0%)                (34.0%)
Effect of valuation allowance..............         34.0%               34.0%                     --
Stock compensation expense.................            --                  --                  28.0%
                                                 --------            --------               --------
                                                       --                  --                  (6.0%)
                                                 ========            ========               ========
</TABLE>
 
                                      F-40
<PAGE>   116
                    WASTE CONNECTIONS, INC. AND PREDECESSORS
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
             THE NINE MONTHS ENDED SEPTEMBER 30, 1998 IS UNAUDITED)
 
11. NET INCOME (LOSS) PER SHARE INFORMATION
 
     The following table sets forth the calculation of the numerator and
denominator used in the computation of basic and diluted net loss per share and
pro forma basic and diluted net income (loss) per share for the period from
inception (September 9, 1997) through December 31, 1997 and the nine months
ended September 30, 1998. The pro forma basic and diluted net income (loss) per
share calculations assume the conversion of all outstanding shares of redeemable
convertible preferred stock for the period from inception (September 9, 1997)
through December 31, 1997, and the conversion of all outstanding shares of
redeemable convertible preferred stock and redeemable common stock for the nine
months ended September 30, 1998, as if such conversions occurred as of the first
day of each period presented or the actual date of issuance, if subsequent to
the first day of the period presented.
 
<TABLE>
<CAPTION>
                                                                        SEPTEMBER 30, 1998
                                    DECEMBER 31, 1997     ----------------------------------------------
                                  ---------------------                    (UNAUDITED)
                                              PRO FORMA                           PRO FORMA    PRO FORMA
                                    BASIC       BASIC       BASIC      DILUTED      BASIC       DILUTED
                                  NET LOSS    NET LOSS    NET LOSS    NET LOSS     NET LOSS    NET LOSS
                                  PER SHARE   PER SHARE   PER SHARE   PER SHARE   PER SHARE    PER SHARE
                                  ---------   ---------   ---------   ---------   ----------   ---------
<S>                               <C>         <C>         <C>         <C>         <C>          <C>
Numerator:
  Income (loss) before
     extraordinary item.........  $  (5,066)  $  (4,788)  $   1,617   $   1,617   $   1,617    $   1,617
  Redeemable convertible
     preferred stock
     accretion..................       (531)         --        (917)       (917)         --           --
                                  ---------   ---------   ---------   ---------   ---------    ---------
  Income (loss) applicable to
     common stockholders before
     extraordinary item.........  $  (5,597)  $  (4,788)  $     700   $     700   $   1,617    $   1,617
                                  =========   =========   =========   =========   =========    =========
  Extraordinary item............         --          --        (815)       (815)       (815)        (815)
                                  ---------   ---------   ---------   ---------   ---------    ---------
  Net income (loss) applicable
     to common stockholders.....  $  (5,597)  $  (4,788)  $    (115)  $    (115)  $     802    $     802
                                  =========   =========   =========   =========   =========    =========
 
Denominator:
  Weighted average common shares
     outstanding................  1,872,567   1,872,567   5,476,532   5,476,532   5,476,532    5,476,532
  Dilutive effect of stock
     options and warrants
     outstanding................         --          --          --   1,584,836          --    1,584,836
  Incremental common shares
     issuable upon redemption of
     redeemable common stock....         --          --          --     377,290     377,290      377,290
  Incremental common shares
     issuable upon conversion of
     preferred stock............         --   2,499,998          --          --   1,263,735    1,263,735
                                  ---------   ---------   ---------   ---------   ---------    ---------
                                  1,872,567   4,372,565   5,476,532   7,438,658   7,117,557    8,702,393
                                  =========   =========   =========   =========   =========    =========
</TABLE>
 
                                      F-41
<PAGE>   117
                    WASTE CONNECTIONS, INC. AND PREDECESSORS
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
             THE NINE MONTHS ENDED SEPTEMBER 30, 1998 IS UNAUDITED)
 
     As of December 31, 1997, outstanding options to purchase 528,500 shares of
common stock (with exercise prices ranging from $2.80 to $10.50), outstanding
warrants to purchase 1,056,000 shares of common stock (with exercise prices from
$0.01 to $5.00), and the outstanding Redeemable Convertible Preferred Stock
could potentially dilute basic earnings per share in the future and have not
been included in the computation of diluted net loss per share because to do so
would have been antidilutive for the period presented.
 
12. NEW CREDIT FACILITY
 
     On January 30, 1998, the Company obtained a revolving credit facility from
BankBoston (the "Credit Facility"). The maximum amount available under the
Credit Facility was $25,000 including stand-by letters-of-credit and the
borrowings bore interest at various fixed and/or variable rates at the Company's
'option. The Credit Facility allowed for the Company to issue up to $5,000 in
stand-by letters-of-credit. The Credit Facility required quarterly payments of
interest. The Credit Facility required the Company to pay an annual commitment
fee equal to 0.5% of the unused portion of the Credit Facility. In connection
with the Credit Facility the Company granted to an affiliate of BankBoston a
warrant to purchase 140,000 shares of the Company's common stock with an
exercise price of $2.80 per share and an expiration date of January 29, 2008.
 
     On May 28, 1998, the Company entered into a new revolving credit facility
with a syndicate of banks for which BankBoston N.A. acts as agent (the "May
Credit Facility"). The maximum amount available under the May Credit Facility
was $60 million (including stand-by letters of credit) and the borrowings bore
interest at various fixed and/or variable rates at the Company's option
(approximately 7.49% as of September 30, 1998). The May Credit Facility replaced
an existing revolving credit facility. The May Credit Facility allowed for the
Company to issue up to $5 million in stand-by letters-of-credit. The May Credit
Facility required quarterly payments of interest. Borrowings under the May
Credit Facility were secured by virtually all of the Company's assets. The May
Credit Facility required the Company to pay an annual commitment fee equal to
0.375% of the unused portion of the Credit Facility.
 
     On November 20, 1998, the Company entered into a new revolving credit
facility with a syndicate of banks for which BankBoston N.A. acts as agent (the
"November Credit Facility"). The maximum amount available under the November
Credit Facility is $125 million (including stand-by letters of credit) and the
borrowings bear interest at various fixed and/or variable rates at the Company's
option (approximately 7.0% as of September 30, 1998). The November Credit
Facility replaced an existing revolving credit facility. The November Credit
Facility allows for the Company to issue up to $15 million in stand-by
letters-of-credit. The November Credit Facility requires quarterly payments of
interest and it matures in November 2003. Borrowings under the November Credit
Facility are secured by virtually all of the Company's assets. The November
Credit Facility requires the Company to pay an annual commitment fee equal to
0.375% of the unused portion of the November Credit Facility. The November
Credit Facility places certain business, financial and operating restrictions on
the Company relating to, among other things the incurrence of additional
indebtedness, investments, acquisitions, asset sales, mergers, dividends,
distributions and repurchase and redemption of capital stock. The November
Credit Facility also requires that specified financial ratios and balances be
maintained. Management of the Company expects to record an extraordinary charge
of approximately $211 (net of income tax) in the fourth quarter of 1998 related
to the extinguishment of the May Credit Facility.
 
                                      F-42
<PAGE>   118
                    WASTE CONNECTIONS, INC. AND PREDECESSORS
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
             THE NINE MONTHS ENDED SEPTEMBER 30, 1998 IS UNAUDITED)
 
13. RELATED PARTY TRANSACTIONS
 
     The Company has entered into certain transactions with Continental Paper,
LLC ("Continental"), in which the Company delivers to Continental all of the
Company's collected recyclable materials in areas in which Continental has
processing facilities and Continental pays the Company market rates for the
recyclable materials. Certain of the Company's stockholders are the majority
owners of Continental. During the period from inception (September 9, 1997)
through December 31, 1997, the Company received approximately $223 from
Continental in these transactions.
 
                                      F-43
<PAGE>   119
 
               REPORT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS
 
Board of Directors and Shareholders
Murrey's Disposal Company, Inc.
American Disposal Company, Inc.
D.M. Disposal Co., Inc.
Tacoma Recycling Company, Inc.
 
     We have audited the accompanying combined balance sheets of Murrey's
Disposal Company, Inc., American Disposal Company, Inc., D.M. Disposal Co.,
Inc., and Tacoma Recycling Company, Inc. (collectively the "Murrey Companies")
as of December 31, 1996 and 1997, and the related combined statements of income
and retained earnings, and cash flows for each of the three years in the period
ended December 31, 1997. These financial statements are the responsibility of
the Murrey Companies' management. Our responsibility is to express an opinion on
these financial statements based on our audits.
 
     We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.
 
     In our opinion, the financial statements referred to above present fairly,
in all material respects, the combined financial position of the Murrey
Companies at December 31, 1996 and 1997, and the combined results of their
operations and their cash flows for each of the three years in the period ended
December 31, 1997, in conformity with generally accepted accounting principles.
 
                                                 /s/ ERNST & YOUNG LLP
 
Sacramento, California
October 2, 1998,
except for Note 12, as to
which the date is
October 22, 1998
 
                                      F-44
<PAGE>   120
 
                              THE MURREY COMPANIES
 
                            COMBINED BALANCE SHEETS
               (IN THOUSANDS, EXCEPT SHARE AND PER SHARE AMOUNTS)
 
                                     ASSETS
 
<TABLE>
<CAPTION>
                                                                DECEMBER 31,
                                                             ------------------    SEPTEMBER 30,
                                                              1996       1997          1998
                                                             -------    -------    -------------
                                                                                    (UNAUDITED)
<S>                                                          <C>        <C>        <C>
Current assets:
  Cash and cash equivalents................................  $    81    $   126       $   405
  Accounts receivable, less allowance for doubtful accounts
     of
     $62 in 1996, $74 in 1997 and $82 in 1998..............    2,333      2,779         3,364
  Prepaid expenses and other current assets................      119         79            10
                                                             -------    -------       -------
Total current assets.......................................    2,533      2,984         3,779
Property, plant and equipment, net.........................   12,529     14,819        14,371
Intangible assets, net.....................................       --      1,862         1,758
Other assets...............................................        3         31            --
                                                             -------    -------       -------
                                                             $15,065    $19,696       $19,908
                                                             =======    =======       =======
 
                              LIABILITIES AND SHAREHOLDERS' EQUITY
Current liabilities:
  Short-term borrowings....................................  $ 1,609    $ 1,628       $   620
  Accounts payable.........................................    1,108      1,617         2,217
  Advances from a related party............................      818        543           543
  Deferred revenue.........................................      765        919         1,432
  Accrued liabilities......................................      705        832         1,288
  Income taxes payable.....................................      321        228           277
  Current portion of long-term debt........................      928        873           751
                                                             -------    -------       -------
Total current liabilities..................................    6,254      6,640         7,128
Long-term debt.............................................    1,851      4,907         4,047
Deferred income taxes......................................      702        658           658
Commitments and contingencies (Note 7)
Shareholders' equity:
  Common stock at par value; 60,500 shares authorized;
     1,470 shares issued and outstanding...................       45         45            45
  Additional paid-in capital...............................      455        455           455
  Retained earnings........................................    5,758      6,991         7,575
                                                             -------    -------       -------
Total shareholders' equity.................................    6,258      7,491         8,075
                                                             -------    -------       -------
                                                             $15,065    $19,696       $19,908
                                                             =======    =======       =======
</TABLE>
 
                            See accompanying notes.
                                      F-45
<PAGE>   121
 
                              THE MURREY COMPANIES
 
              COMBINED STATEMENTS OF INCOME AND RETAINED EARNINGS
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                            NINE MONTHS ENDED
                                             YEARS ENDED DECEMBER 31,         SEPTEMBER 30,
                                           -----------------------------    ------------------
                                            1995       1996       1997       1997       1998
                                           -------    -------    -------    -------    -------
                                                                               (UNAUDITED)
<S>                                        <C>        <C>        <C>        <C>        <C>
Revenues.................................  $27,786    $25,024    $28,874    $21,477    $24,532
Operating expenses:
  Cost of operations.....................   20,859     20,465     23,133     16,933     19,337
  Selling, general and administrative....    2,101      2,142      2,323      1,653      1,870
  Depreciation and amortization..........      923      1,236      1,371      1,350      1,640
                                           -------    -------    -------    -------    -------
Income from operations...................    3,903      1,181      2,047      1,541      1,685
Interest expense.........................     (198)      (284)      (380)      (247)      (423)
Other income (expense), net..............      210        309        283        150        (97)
                                           -------    -------    -------    -------    -------
Income before income taxes...............    3,915      1,206      1,950      1,444      1,165
Income tax provision.....................     (690)      (543)      (634)      (512)      (414)
                                           -------    -------    -------    -------    -------
Net income...............................    3,225        663      1,316        932        751
Retained earnings, beginning of period...    1,920      5,095      5,758      5,758      6,991
Dividends................................      (50)        --        (83)        --       (167)
                                           -------    -------    -------    -------    -------
Retained earnings, end of period.........  $ 5,095    $ 5,758    $ 6,991    $ 6,690    $ 7,575
                                           =======    =======    =======    =======    =======
Pro forma income taxes (unaudited -- Note
  11)....................................  $(1,338)   $  (432)   $  (697)   $  (522)   $  (421)
                                           -------    -------    -------    -------    -------
Pro forma net income (unaudited -- Note
  11)....................................  $ 2,577    $   774    $ 1,253    $   922    $   744
                                           =======    =======    =======    =======    =======
</TABLE>
 
                            See accompanying notes.
                                      F-46
<PAGE>   122
 
                              THE MURREY COMPANIES
 
                       COMBINED STATEMENTS OF CASH FLOWS
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                                           NINE MONTHS ENDED
                                                              YEARS ENDED DECEMBER 31,       SEPTEMBER 30,
                                                             ---------------------------   -----------------
                                                              1995      1996      1997      1997      1998
                                                             -------   -------   -------   -------   -------
                                                                                              (UNAUDITED)
<S>                                                          <C>       <C>       <C>       <C>       <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
  Net income...............................................  $ 3,225   $   663   $ 1,316   $   932   $   751
  Adjustments to reconcile net income to net cash
     provided by operating activities:
       Depreciation and amortization.......................      923     1,236     1,371     1,056     1,640
       Deferred income taxes...............................      147       (19)      (44)       --        --
       Gain on sale of land................................       --        --        --        --        (8)
       Changes in operating assets and liabilities:
          Accounts receivable, net.........................      (31)       63      (446)     (562)     (585)
          Prepaid expenses and other assets................      (83)      (36)       40      (616)       69
          Accounts payable.................................     (156)      932       509     1,004       600
          Deferred revenue.................................       68        42       154        95       513
          Accrued liabilities..............................     (352)      129       127        26       456
          Income taxes payable.............................      383      (232)      (93)      426        49
                                                             -------   -------   -------   -------   -------
  Net cash provided by operating activities................    4,124     2,778     2,934     2,361     3,485
CASH FLOWS FROM INVESTING ACTIVITIES:
  Payments for acquisitions................................       --        --    (2,900)     (100)       --
  Capital expenditures for property and equipment..........   (3,025)   (4,790)   (2,108)   (2,106)   (1,731)
  Proceeds from sale of land...............................       --        --        --        --       625
  Net change in other assets...............................      (18)       31       (28)     (117)       57
                                                             -------   -------   -------   -------   -------
Net cash used in investing activities......................   (3,043)   (4,759)   (5,036)   (2,323)   (1,049)
CASH FLOWS FROM FINANCING ACTIVITIES:
  Proceeds from long-term debt.............................      750     1,418     3,414     2,021       550
  Principal payments on long-term debt.....................   (1,383)     (615)     (928)     (302)   (1,532)
  Net change in short-term borrowings......................      (77)      659        19      (812)   (1,008)
  Net change in advances from a related party..............      189      (259)     (275)     (275)       --
  Payment of dividends.....................................      (50)       --       (83)       --      (167)
                                                             -------   -------   -------   -------   -------
Net cash provided by (used in) financing activities........     (571)    1,203     2,147       632    (2,157)
                                                             -------   -------   -------   -------   -------
Net increase (decrease) in cash and cash equivalents.......      510      (778)       45       670       279
Cash and cash equivalents:
     Beginning of period...................................      349       859        81        81       126
                                                             -------   -------   -------   -------   -------
     End of period.........................................  $   859   $    81   $   126   $   751   $   405
                                                             =======   =======   =======   =======   =======
SUPPLEMENTARY DISCLOSURES OF CASH FLOW INFORMATION
  AND NON-CASH TRANSACTIONS:
     Cash paid for interest................................  $   198   $   284   $   358   $   247   $   423
                                                             =======   =======   =======   =======   =======
     Cash paid for income taxes............................  $   160   $   792   $   744   $   277   $    10
                                                             =======   =======   =======   =======   =======
     Issuance of notes payable for land and buildings......  $    --   $   260   $   315   $    --   $    --
                                                             =======   =======   =======   =======   =======
     In connection with acquisitions (Note 3) the Murrey
       Companies acquired assets and issued notes payable
       to sellers as follows:
          Fair value of assets acquired....................  $    --   $    --   $ 3,100   $   300   $    --
          Notes payable to sellers.........................       --        --      (200)     (200)       --
                                                             -------   -------   -------   -------   -------
          Cash paid for acquisitions.......................  $    --   $    --   $ 2,900   $   100   $    --
                                                             =======   =======   =======   =======   =======
</TABLE>
 
                            See accompanying notes.
                                      F-47
<PAGE>   123
 
                              THE MURREY COMPANIES
 
                     NOTES TO COMBINED FINANCIAL STATEMENTS
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
        THE NINE MONTHS ENDED SEPTEMBER 30, 1997 AND 1998 IS UNAUDITED)
 
 1. BUSINESS, ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
BUSINESS AND ORGANIZATION
 
     Murrey's Disposal Company, Inc. ("Murrey's"), American Disposal Company,
Inc. ("American"), D.M. Disposal Co., Inc. ("DM"), and Tacoma Recycling Company,
Inc. ("Tacoma") (collectively the "Murrey Companies") are regional, integrated,
non-hazardous solid waste services companies that provide collection, transfer,
and disposal of solid waste and recyclables to residential and commercial
customers in and around the Tacoma, Washington area. Murrey's, American, DM and
Tacoma were incorporated in Washington on March 13, 1963, October 27, 1966, July
12, 1979 and January 30, 1990, respectively.
 
     Each of the Murrey Companies' Common Stock is owned 90% by one or both of
two trusts. The beneficiary of both trusts is also an officer and director of
the Murrey Companies. The remaining stock is owned by two individuals (5% each)
who are also officers and directors of the Murrey Companies.
 
BASIS OF COMBINATION
 
     The combined financial statements of the Murrey Companies include the
accounts of Murrey's, American, DM and Tacoma as a result of their common
management which exercises significant influence over their operations.
Significant intercompany balances and transactions between the Murrey Companies
have been eliminated in combination.
 
INTERIM FINANCIAL INFORMATION
 
     The unaudited interim combined financial statements as of September 30,
1998 and for the nine months ended September 30, 1997 and 1998 have been
prepared in accordance with generally accepted accounting principles for interim
financial information. Accordingly, they do not include all of the information
and footnotes required by generally accepted accounting principles for complete
financial statements. In the opinion of management, all adjustments (consisting
of normal recurring adjustments) considered necessary for a fair presentation
have been included. Operating results for the nine months ended September 30
1998 are not necessarily indicative of the results that may be expected for the
year ended December 31, 1998.
 
USE OF ESTIMATES
 
     The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the amounts reported in the financial statements and
accompanying notes. Actual results could differ from those estimates.
 
CASH EQUIVALENTS
 
     The Murrey Companies considers all highly liquid investments with a
maturity of three months or less at purchase to be cash equivalents.
 
CONCENTRATIONS OF CREDIT RISK
 
     Financial instruments that potentially subject the Murrey Companies to
concentrations of credit risks consist primarily of accounts receivable. Credit
risk on accounts receivable is minimized as a result of the large and diverse
nature of the Murrey Companies' customer base. The Murrey Companies maintain
allowances for
 
                                      F-48
<PAGE>   124
                              THE MURREY COMPANIES
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
        THE NINE MONTHS ENDED SEPTEMBER 30, 1997 AND 1998 IS UNAUDITED)
 
losses based on the expected collectibility of accounts receivable. Credit
losses have been within management's expectations.
 
PROPERTY, PLANT AND EQUIPMENT
 
     Property, plant and equipment are stated at cost. Improvements or
betterments which significantly extend the life of an asset are capitalized.
Expenditures for maintenance and repair costs are charged to operations as
incurred. The cost of assets retired or otherwise disposed of and the related
accumulated depreciation are eliminated from the accounts in the year of
disposal. Gains and losses resulting from property disposals are included in
other income (expense). Depreciation is computed using the straight-line method
over the estimated useful lives of the assets.
 
     The estimated useful lives are as follows:
 
<TABLE>
<S>                                                       <C>
Buildings...............................................      20 years
Machinery and equipment.................................  5 - 15 years
Rolling stock...........................................      10 years
Containers..............................................  5 - 15 years
Furniture and fixtures..................................   3 - 5 years
</TABLE>
 
     In connection with the Acquisitions (Note 3) the Murrey Companies acquired
certain used property and equipment. This used property and equipment is being
depreciated using the straight-line method over its estimated remaining useful
lives, which range from one to twelve years.
 
GOODWILL
 
     Goodwill represents the excess of the purchase price over the fair value of
the net assets acquired (Notes 3 and 4), and is amortized on a straight-line
basis over the period of expected benefit of 40 years.
 
     The Murrey Companies continually evaluate the value and future benefits of
its goodwill. The Murrey Companies assess recoverability from future operations
using income from operations of the related acquired business as a measure.
Under this approach, the carrying value would be reduced if it becomes probable
that the Murrey Companies' best estimate for expected future cash flows of the
related business would be less than the carrying amount of the goodwill over the
remaining amortization period. For the period ending December 31, 1997, there
were no adjustments to the carrying amount of goodwill resulting from these
evaluations.
 
FAIR VALUE OF FINANCIAL INSTRUMENTS
 
     The carrying values of cash and cash equivalents approximate their fair
values as of December 31, 1996 and 1997. The carrying values of short-term
borrowings (Note 5) and long-term debt (Note 6) approximate their fair values as
of December 31, 1996 and 1997, based on current incremental borrowing rates for
similar types of borrowing arrangements.
 
REVENUE RECOGNITION
 
     The Murrey Companies recognize revenues as services are provided. Certain
customers are billed in advance and, accordingly, recognition of the related
revenues is deferred until the services are provided.
 
                                      F-49
<PAGE>   125
                              THE MURREY COMPANIES
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
        THE NINE MONTHS ENDED SEPTEMBER 30, 1997 AND 1998 IS UNAUDITED)
 
INCOME TAXES
 
     DM uses the liability method to account for income taxes. Under this
method, deferred tax assets and liabilities are determined based on differences
between the financial reporting and tax bases of assets and liabilities and are
measured using the enacted tax rates and laws that will be in effect when the
differences are expected to reverse.
 
     Murrey's, American and Tacoma operate under Subchapter S of the Internal
Revenue Code for federal and state income tax reporting purposes. Consequently
all of the income tax attributes and liabilities of these companies' operations
flow through to the individual shareholders.
 
 2. PROPERTY, PLANT AND EQUIPMENT
 
     Property, plant and equipment as of December 31, 1996 and 1997 and
September 30, 1998 consists of the following:
 
<TABLE>
<CAPTION>
                                                DECEMBER 31,
                                             ------------------    SEPTEMBER 30,
                                              1996       1997          1998
                                             -------    -------    -------------
                                                                    (UNAUDITED)
<S>                                          <C>        <C>        <C>
Land and buildings.........................  $ 6,316    $ 6,668       $ 6,111
Machinery and equipment....................    3,518      3,780         3,883
Rolling stock..............................    6,134      7,570         8,315
Containers.................................    3,140      4,380         5,224
Furniture and fixtures.....................      231        255           242
                                             -------    -------       -------
                                              19,339     22,653        23,775
Less accumulated depreciation..............   (6,810)    (7,834)       (9,404)
                                             -------    -------       -------
                                             $12,529    $14,819       $14,371
                                             =======    =======       =======
</TABLE>
 
 3. ACQUISITIONS
 
     During 1997, the Murrey Companies purchased substantially all of the assets
of Island Disposal (effective May 2, 1997) and Environmental Waste Systems and
Olympic Disposal (both effective December 1, 1997) (collectively the
"Acquisitions"). The total purchase price for the Acquisitions was approximately
$3,100, comprised of $2,900 in cash and promissory notes payable to the sellers
totaling $200. Of the combined $3,100 purchase price, $1,791 was recorded as
goodwill and $80 was assigned to non-competition agreements. The Acquisitions
were accounted for in accordance with the purchase method of accounting and,
accordingly, the net assets acquired were included in the Murrey Companies'
combined balance sheet based upon their estimated fair values on the date of the
Acquisitions. The Murrey Companies' combined statement of operations includes
the revenues and expenses of the acquired businesses after the effective date of
the transactions.
 
                                      F-50
<PAGE>   126
                              THE MURREY COMPANIES
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
        THE NINE MONTHS ENDED SEPTEMBER 30, 1997 AND 1998 IS UNAUDITED)
 
     Certain items affecting the purchase price and the allocation are
preliminary. A summary of the preliminary purchase price allocation as of
December 31, 1997, for the Acquisitions is as follows:
 
<TABLE>
<S>                                                           <C>
Acquired assets:
  Property and equipment....................................  $1,229
  Goodwill..................................................   1,791
  Non-competition agreements................................      80
                                                              ------
                                                              $3,100
                                                              ======
</TABLE>
 
     The following unaudited pro forma information shows the results of the
Murrey Companies' operations as though the Acquisitions had occurred as of
January 1, 1996:
 
<TABLE>
<CAPTION>
                                                         YEARS ENDED DECEMBER 31,
                                                         ------------------------
                                                           1996           1997
                                                         ---------      ---------
                                                               (UNAUDITED)
<S>                                                      <C>            <C>
Revenue................................................   $27,485        $31,106
                                                          =======        =======
Net Income.............................................   $   706        $ 1,094
                                                          =======        =======
</TABLE>
 
     The pro forma results have been prepared for comparative purposes only and
are not necessarily indicative of the actual results of operations had the
Acquisitions occurred on January 1, 1996, or the results of future operations of
the Murrey Companies. Furthermore, the pro forma results do not give effect to
all cost savings or incremental costs that may occur as a result of the
integration and consolidation of the Acquisitions.
 
 4. INTANGIBLE ASSETS
 
     Intangible assets as of December 31, 1996 and 1997 and September 30, 1998
consists of the following:
 
<TABLE>
<CAPTION>
                                                 DECEMBER 31,
                                               ----------------    SEPTEMBER 30,
                                                1996      1997         1998
                                               ------    ------    -------------
                                                                    (UNAUDITED)
<S>                                            <C>       <C>       <C>
Goodwill, net................................  $   --    $1,783       $1,691
Non-competition agreement, net...............      --        79           67
                                               ------    ------       ------
                                               $   --    $1,862       $1,758
                                               ======    ======       ======
</TABLE>
 
     Accumulated amortization on intangible assets amounted to $9 as of December
31, 1997 (none in 1996) and $113 as of September 30, 1998.
 
 5. SHORT-TERM BORROWINGS
 
     Short-term borrowings consist of various revolving and non-revolving
lines-of-credit with banks, bearing interest at variable rates (ranging from
9.0% to 9.25% as of December 31, 1997) and mature at various dates through
November 30, 1998. The lines of credit are secured by all cash accounts held
with the banks, which totaled $126 as of December 31, 1997. All available
amounts under these lines-of-credit were outstanding as of December 31, 1997.
 
                                      F-51
<PAGE>   127
                              THE MURREY COMPANIES
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
        THE NINE MONTHS ENDED SEPTEMBER 30, 1997 AND 1998 IS UNAUDITED)
 
     Certain of these lines-of-credit contain certain restrictive covenants,
which among other things require that specified financial balances and ratios be
maintained. As of December 31, 1997, the Murrey Companies were in compliance
with the covenants.
 
 6. LONG-TERM DEBT
 
     Long-term debt as of December 31, 1996 and 1997 and September 30, 1998
consists of the following:
 
<TABLE>
<CAPTION>
                                                         DECEMBER 31,
                                                       ----------------    SEPTEMBER 30,
                                                        1996      1997         1998
                                                       ------    ------    -------------
                                                                            (UNAUDITED)
<S>                                                    <C>       <C>       <C>
Note payable to a bank bearing interest at a variable
  rate (approximately 8.5% as of December 31, 1997);
  monthly payments of principal and interest of $25;
  maturing in November, 2007; secured by certain cash
  accounts and a pledge of one of the Murrey
  Companies exclusive franchise agreements...........  $   --    $2,000       $1,901
Note payable to a bank bearing interest at 8.6%;
  monthly payments of principal and interest
  aggregating $13; maturing in October, 2001; secured
  by equipment with a net book value of approximately
  $533 as of December 31, 1997 and certain cash
  accounts...........................................  $   --    $  632       $  542
Notes payable to a bank bearing interest at various
  fixed rates (ranging from 9.1% to 9.2% as of
  December 31, 1997); monthly payments of principal
  and interest aggregating $25 and one-time payments
  of $470 and $751 in September, 2000 and May, 2001,
  respectively; maturing at various dates between
  September, 2000 and May, 2001; secured by land and
  buildings with a net book value of approximately
  $2,548 as of December 31, 1997.....................   1,752     1,544        1,393
Equipment financing notes payable bearing interest at
  various rates (ranging from 8.6% to 8.8% as of
  December 31, 1997); monthly payments of principal
  and interest aggregating $25; maturing at various
  dates through September, 2001; secured by equipment
  with an aggregate net book value of approximately
  $984 as of December 31, 1997.......................     567       822          479
Notes payable to sellers bearing interest at various
  rates (ranging from 8.5% to 9.0% as of December 31,
  1997); monthly principal and interest payments of
  $9; maturing at various dates between February,
  2001 and October, 2007; secured by land and
  buildings with a net book value of approximately
  $908 as of December 31, 1997.......................     218       471          295
Unsecured notes payable to seller bearing interest at
  8.0% as of December 31, 1997; monthly principal and
  interest payments of $4; maturing in June, 2002....      --       189          100
Others...............................................     242       122           88
                                                       ------    ------       ------
                                                        2,779     5,780        4,798
Less: current portion................................     928       873          751
                                                       ------    ------       ------
Long-term debt.......................................  $1,851    $4,907       $4,047
                                                       ======    ======       ======
</TABLE>
 
                                      F-52
<PAGE>   128
                              THE MURREY COMPANIES
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
        THE NINE MONTHS ENDED SEPTEMBER 30, 1997 AND 1998 IS UNAUDITED)
 
     As of December 31, 1997, aggregate contractual future principal payments by
calendar year on long-term debt are due as follows:
 
<TABLE>
<S>                                                           <C>
1998........................................................  $  873
1999........................................................     780
2000........................................................   1,056
2001........................................................   1,232
2002........................................................     408
Thereafter..................................................   1,431
                                                              ------
                                                              $5,780
                                                              ======
</TABLE>
 
 7. COMMITMENTS AND CONTINGENCIES
 
COMMITMENTS
 
  Operating Leases
 
     The Murrey Companies lease certain equipment and facilities under
non-cancelable operating leases. Rent expense under all operating leases during
the years ended December 31, 1995, 1996 and 1997 amounted to $319, $170 and
$183, respectively.
 
     As of December 31, 1997, future minimum lease payments under these
operating leases, by calendar year, are as follows:
 
<TABLE>
<S>                                                           <C>
1998........................................................  $  187
1999........................................................     186
2000........................................................     167
2001........................................................     107
2002........................................................      87
Thereafter..................................................     355
                                                              ------
                                                              $1,089
                                                              ======
</TABLE>
 
CONTINGENCIES
 
  Environmental Risks
 
     The Murrey Companies are subject to liability for any environmental damage
that the solid waste facilities they operate may cause to neighboring
landowners, particularly as a result of the contamination of drinking water
sources or soil, including damage resulting from conditions existing prior to
the operation of such facilities by the Murrey Companies. The Murrey Companies
may also be subject to liability for any off-site environmental contamination
caused by pollutants or hazardous substances whose transportation, treatment or
disposal was arranged by the Murrey Companies. Any substantial liability for
environmental damage incurred by the Murrey Companies could have a material
adverse effect on the Murrey Companies' combined financial condition, results of
operations or cash flows.
 
                                      F-53
<PAGE>   129
                              THE MURREY COMPANIES
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
        THE NINE MONTHS ENDED SEPTEMBER 30, 1997 AND 1998 IS UNAUDITED)
 
  Legal Proceedings
 
     In the normal course of their business and as a result of the extensive
governmental regulation of the solid waste industry, the Murrey Companies may
periodically become subject to various judicial and administrative proceedings
involving federal, state or local agencies. In these proceedings, an agency may
seek to impose fines or to revoke or deny renewal of an operating permit held by
the Murrey Companies. From time to time the Murrey Companies may also become
parties to various claims or suits for alleged damages to persons and property,
alleged violations of certain laws and alleged liabilities arising out of
matters occurring during the normal course of operating a waste management
business. However, as of December 31, 1997 and September 30, 1998, there is no
current proceeding or litigation involving the Murrey Companies that the Murrey
Companies believe will have a material adverse impact on the Murrey Companies'
business, financial condition, results of operations or cash flows.
 
  Disposal Site
 
     The Murrey Companies have been informed that the Hidden Valley Landfill
which is currently utilized by them for disposal of waste collected in Pierce
County is currently operating under a Consent Decree with the Washington State
Department of Ecology and the Environmental Protection Agency. Under the terms
of the Consent Decree the Hidden Valley Landfill is required to be closed on or
before December 31, 1998; after which all of the waste collected by the Murrey
Companies in Pierce County will be long hauled to an alternate disposal site
until the new solid waste landfill in Pierce County is opened. The new landfill
is projected to open in November 1999. Management of the Murrey Companies does
not believe that the closure of the Hidden Valley Landfill will have a material
adverse impact on the Murrey Companies' business, combined financial position,
results of operations or cash flows.
 
  Employees
 
     Approximately 44 of the Murrey Companies' route drivers are represented by
the Teamsters Union. The Murrey Companies have a collective bargaining agreement
that expires in June 1999. The Murrey Companies are not aware of any other
organizational efforts among their employees and believes that their relations
with their employees are good.
 
 8. RELATED PARTY TRANSACTIONS
 
OPERATING LEASE
 
     The Murrey Companies lease land on which certain of their facilities are
located from a shareholder of the Murrey Companies. This lease is pursuant to an
informal arrangement whereby the Murrey Companies pay all of the property taxes
and other expenses associated with the leased land in lieu of monthly rent.
These payments totaled approximately $10 during each of the years ended December
31, 1995, 1996, and 1997.
 
ADVANCES
 
     As of December 31, 1996 and 1997, the Murrey Companies had non-interest
bearing advances payable to one of their shareholders totaling $818 and $543,
respectively.
 
                                      F-54
<PAGE>   130
                              THE MURREY COMPANIES
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
        THE NINE MONTHS ENDED SEPTEMBER 30, 1997 AND 1998 IS UNAUDITED)
 
DISPOSAL FEES
 
     During the years ended December 31, 1995, 1996 and 1997, the Murrey
Companies paid $7,355, $7,730, and $8,592, respectively, in disposal fees to a
landfill that is owned and operated by a company in which one of the Murrey
Companies shareholders has an approximate 33% ownership interest.
 
 9. 401(k) PLAN
 
     The Murrey Companies have a voluntary savings and investment plan (the
"401(k) Plan"). The 401(k) Plan is available to all eligible, non-union
employees of the Murrey Companies. Under the 401(k) Plan the Murrey Companies'
contributions are at the discretion of management of the Murrey Companies.
During the years ended December 31, 1995, 1996 and 1997, the Murrey Companies'
401(k) Plan expense was approximately $246, $267 and $316, respectively.
 
10. INCOME TAXES
 
     The provision (benefit) for income taxes for the Murrey Companies pertains
solely to DM and consists of the following:
 
<TABLE>
<CAPTION>
                                                               YEARS ENDED DECEMBER 31,
                                                              --------------------------
                                                               1995      1996      1997
                                                              ------    ------    ------
<S>                                                           <C>       <C>       <C>
Federal:
  Current...................................................   $543      $562      $678
  Deferred..................................................    147       (19)      (44)
                                                               ----      ----      ----
                                                               $690      $543      $634
                                                               ====      ====      ====
</TABLE>
 
     Deferred taxes result from temporary differences in the recognition of
certain expense items for income tax and financial reporting purposes. The
Murrey Companies' deferred taxes as of December 31, 1996 and 1997 are
substantially comprised of depreciation deducted for tax purposes that will be
recorded in future periods for financial reporting purposes.
 
     The principal reasons for the difference between the federal statutory
income tax rate and the effective income tax rate are as follows:
 
<TABLE>
<CAPTION>
                                                              YEARS ENDED DECEMBER 31,
                                                              -------------------------
                                                               1995      1996     1997
                                                              -------    -----    -----
<S>                                                           <C>        <C>      <C>
Federal expense expected at statutory rates on combined
  income before income taxes................................  $1,331     $410     $663
Tax effect of companies reporting under Subchapter S........    (645)     124      (42)
Other.......................................................       4        9       13
                                                              ------     ----     ----
                                                              $  690     $543     $634
                                                              ======     ====     ====
</TABLE>
 
11. PRO FORMA INCOME TAX INFORMATION (UNAUDITED)
 
     As described in Note 1, Murrey's, American, and Tacoma (the "S
Corporations") operate under Subchapter S of the Internal Revenue Code and are
not subject to federal income taxes. In connection with the Murrey Companies'
proposed merger with Waste Connections, Inc. ("WCI") (Note 12), the Subchapter S
election will be terminated. As a result, the S Corporations (as wholly-owned
subsidiaries of
 
                                      F-55
<PAGE>   131
                              THE MURREY COMPANIES
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
        THE NINE MONTHS ENDED SEPTEMBER 30, 1997 AND 1998 IS UNAUDITED)
 
WCI) will be subject to corporate income taxes subsequent to the termination of
S corporation status. The Murrey Companies had combined income for income tax
purposes of $2,769, $2,135 and $1,941 for 1995, 1996 and 1997, respectively. Had
the Murrey Companies filed federal income tax returns as regular corporations
for 1995, 1996 and 1997, income tax expense under the provisions of Financial
Accounting Standards No. 109 would have been $1,338, $432 and $697,
respectively.
 
     The following unaudited pro forma information reflects income tax expense
(benefit) for the Murrey Companies as if the S Corporations had also been
subject to federal income taxes:
 
<TABLE>
<CAPTION>
                                                                   YEARS ENDED
                                                                  DECEMBER 31,
                                                              ---------------------
                                                               1995    1996    1997
                                                              ------   -----   ----
<S>                                                           <C>      <C>     <C>
Federal:
  Current...................................................  $  941   $ 726   $660
  Deferred..................................................     397    (294)    37
                                                              ------   -----   ----
Pro forma income taxes......................................  $1,338   $ 432   $697
                                                              ======   =====   ====
</TABLE>
 
     The pro forma provisions for income taxes for the years ended December 31,
1995, 1996 and 1997 differ from the amounts computed by applying the applicable
statutory federal income tax rate (34%) to income before income taxes due to
certain non-deductible expenses.
 
     The Murrey Companies pro forma deferred income tax asset of approximately
$98 and $71 as of December 31, 1996 and 1997, respectively, relates principally
to differences in the recognition of bad debt expenses, vacation accruals, and
certain other temporary differences. The Murrey Companies also had pro forma
deferred tax liabilities as of December 31, 1996 and 1997 of approximately
$1,322 and $1,332 which relate to differences between tax and financial methods
of depreciation and the use of the cash method of accounting for tax purposes by
certain of the S Corporations.
 
12. SUBSEQUENT EVENT
 
MERGER OF THE MURREY COMPANIES
 
     On October 22, 1998, the Murrey Companies and WCI jointly announced that
they had signed a definitive agreement under which the Murrey Companies will
merge with wholly-owned subsidiaries of WCI. Under the terms of the agreement,
substantially all shares of common stock of the Murrey Companies will be
exchanged for 2.75 million shares of WCI common stock (subject to adjustment at
the date of consummation of the Merger). The transaction is expected to be
accounted for as a pooling of interests and is expected to close during the
fourth quarter of calendar 1998.
 
13. YEAR 2000 (UNAUDITED)
 
     The Murrey Companies will need to modify or replace portions of their
software so that their computer systems will function properly with respect to
dates in the year 2000 ("Year 2000") and thereafter. To date, the Murrey
Companies have not incurred any costs related to the Year 2000 project. The
Murrey Companies do not believe that their expenditures relating to the Year
2000 project will be material. However, if the required Year 2000 modifications
and conversions are not made or are not completed in a timely manner, the Year
2000 issue could materially affect their operations.
 
                                      F-56
<PAGE>   132
 
               REPORT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS
 
Board of Directors and Shareholders
Madera Disposal Systems, Inc.
 
     We have audited the accompanying balance sheets of Madera Disposal Systems,
Inc. as of December 31, 1996 and 1997, and the related statements of income and
retained earnings, and cash flows for each of the three years in the period
ended December 31, 1997. These financial statements are the responsibility of
the Company's management. Our responsibility is to express an opinion on these
financial statements based on our audits.
 
     We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.
 
     In our opinion, the financial statements referred to above present fairly,
in all material respects, the financial position of Madera Disposal Systems,
Inc. at December 31, 1996 and 1997, and the results of its operations and its
cash flows for each of the three years in the period ended December 31, 1997, in
conformity with generally accepted accounting principles.
 
                                                 /s/ ERNST & YOUNG LLP
 
Sacramento, California
February 20, 1998
 
                                      F-57
<PAGE>   133
 
                         MADERA DISPOSAL SYSTEMS, INC.
 
                                 BALANCE SHEETS
               (IN THOUSANDS, EXCEPT SHARE AND PER SHARE AMOUNTS)
 
<TABLE>
<CAPTION>
                                                                DECEMBER 31,
                                                              ----------------
                                                               1996      1997
                                                              ------    ------
<S>                                                           <C>       <C>
ASSETS
Current assets:
     Cash and equivalents...................................  $1,064    $1,527
     Accounts receivable, less allowance for doubtful
      accounts of $111 ($90 in 1996)........................     788       691
     Receivables from shareholders..........................     100       113
     Prepaid expenses and other current assets..............     216       214
                                                              ------    ------
     Total current assets...................................   2,168     2,545
Property and equipment, net.................................   3,800     3,636
Assets held for sale........................................      --        77
Other assets................................................      36        39
                                                              ------    ------
                                                              $6,004    $6,297
                                                              ======    ======
LIABILITIES AND SHAREHOLDERS' EQUITY
Current Liabilities:
     Accounts payable.......................................  $  750    $  644
     Deferred revenue.......................................     208       219
     Accrued liabilities....................................     193       178
     Current portion of capital lease obligations...........     218       274
     Current portion of long-term debt......................     177       288
                                                              ------    ------
Total current liabilities...................................   1,546     1,603
Long-term portion of capital lease obligations..............   1,557     1,565
Long-term debt..............................................     637       329
Commitments and contingencies (Note 4)
 
Shareholders' equity:
 
     Common stock: $100 par value; 1,000,000 shares
      authorized; 500 shares issued and outstanding.........      50        50
     Retained earnings......................................   2,214     2,750
                                                              ------    ------
Total shareholders' equity..................................   2,264     2,800
                                                              ------    ------
                                                              $6,004    $6,297
                                                              ======    ======
</TABLE>
 
                            See accompanying notes.
                                      F-58
<PAGE>   134
 
                         MADERA DISPOSAL SYSTEMS, INC.
 
                   STATEMENTS OF INCOME AND RETAINED EARNINGS
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                               YEARS ENDED DECEMBER 31,
                                                              --------------------------
                                                               1995      1996      1997
                                                              ------    ------    ------
<S>                                                           <C>       <C>       <C>
Revenues....................................................  $7,008    $7,770    $7,845
Operating expenses:
     Cost of operations.....................................   5,288     5,512     5,289
     Selling, general and administrative....................     996       969     1,041
     Depreciation and amortization..........................     467       585       627
                                                              ------    ------    ------
Income from operations......................................     257       704       888
Interest expense............................................    (237)     (259)     (280)
Other income, net...........................................      68       113       173
                                                              ------    ------    ------
Net income..................................................      88       558       781
Retained earnings, beginning of year........................   1,863     1,656     2,214
Distributions to shareholders...............................    (295)       --      (245)
                                                              ------    ------    ------
Retained earnings, end of year..............................  $1,656    $2,214    $2,750
                                                              ======    ======    ======
Pro forma income taxes (unaudited -- Note 7)................  $  (30)   $ (208)   $ (295)
                                                              ------    ------    ------
Pro forma net income (unaudited -- Note 7)..................  $   58    $  350    $  486
                                                              ======    ======    ======
</TABLE>
 
                            See accompanying notes.
                                      F-59
<PAGE>   135
 
                         MADERA DISPOSAL SYSTEMS, INC.
 
                            STATEMENTS OF CASH FLOWS
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                              YEARS ENDED DECEMBER 31,
                                                              -------------------------
                                                              1995      1996      1997
                                                              -----    ------    ------
<S>                                                           <C>      <C>       <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
  Net income................................................  $  88    $  558    $  781
  Adjustments to reconcile net income to net cash provided
     by operating activities:
     Depreciation and amortization..........................    467       585       627
     Gain on sale of property & equipment...................    (13)      (37)      (71)
     Changes in operating assets and liabilities:
       Accounts receivable, net.............................   (252)      (23)       97
       Receivables from shareholders........................    (21)      (33)      (13)
       Prepaid expenses and other assets....................     --       (52)        2
       Other assets.........................................     (2)       (9)       (3)
       Accounts payable.....................................    265       (29)     (106)
       Deferred revenue.....................................      4        16        11
       Accrued liabilities..................................    105        44       (15)
                                                              -----    ------    ------
Net cash provided by operating activities:..................    641     1,020     1,310
CASH FLOWS FROM INVESTING ACTIVITIES:
  Capital expenditures for property and equipment...........   (274)     (902)     (183)
  Proceeds from sale of assets..............................     13        97       140
                                                              -----    ------    ------
Net cash used in investing activities.......................   (261)     (805)      (43)
CASH FLOWS FROM FINANCING ACTIVITIES:
  Proceeds from long-term debt..............................    265       591        --
  Principal payments on long-term debt and capital lease
     obligations............................................   (576)     (351)     (559)
  Cash distributions made to shareholders...................   (295)       --      (245)
                                                              -----    ------    ------
Net cash provided by (used in) financing activities.........   (606)      240      (804)
                                                              -----    ------    ------
Net increase (decrease) in cash and equivalents.............   (226)      455       463
Cash and equivalents:
  Beginning of year.........................................    835       609     1,064
                                                              -----    ------    ------
  End of year...............................................  $ 609    $1,064    $1,527
                                                              =====    ======    ======
SUPPLEMENTARY DISCLOSURES OF CASH FLOW INFORMATION AND
  NON-CASH TRANSACTIONS:
Cash paid for interest......................................  $ 237    $  237    $  279
                                                              =====    ======    ======
Capital lease obligations and long-term debt incurred for
  the purchase of property and equipment....................  $ 854    $   --    $  426
                                                              =====    ======    ======
</TABLE>
 
                            See accompanying notes.
                                      F-60
<PAGE>   136
 
                         MADERA DISPOSAL SYSTEMS, INC.
 
                         NOTES TO FINANCIAL STATEMENTS
                               DECEMBER 31, 1997
                                 (IN THOUSANDS)
 
 1. ORGANIZATION, BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
ORGANIZATION AND BUSINESS
 
     Madera Disposal Systems, Inc. ("Madera") is a regional, integrated,
non-hazardous solid waste services company that provides collection, transfer
disposal and recycling services to residential, commercial and industrial
customers. Madera Landfill is contracted by the County of Madera to operate the
Fairmead, the North Fork Transfer Station and the materials recovery facility
(aka, Mammoth Recycling Facility), all of which are located in the County of
Madera, State of California. Madera also holds an exclusive contract with the
County of Madera to collect solid waste within the unincorporated areas of the
County of Madera. The contracts continue in force and effect until August 2004,
and will automatically be extended for one five year period unless Madera is
then in material breach or default of its obligations under the materials
recovery facility contract. All contracts may be extended for additional periods
and upon terms as the County of Madera and Madera may mutually agree upon.
 
     On November 9, 1993, Madera entered into an agreement with the County of
Madera, whereby Madera was to design, permit, finance, construct, equip, staff,
operate and maintain a materials recovery facility (the "Facility") at the
County's Fairmead Landfill for the purpose of providing the County of Madera
with a guaranteed reduction in the quantity of municipal solid waste requiring
landfill disposal. The Facility was to be designed, constructed and operated to
receive all municipal solid waste from the Cities of Madera and Chowchilla and
the unincorporated areas of the County of Madera. It was also to meet the
twenty-five percent (25%) waste reduction requirements of Assembly Bill 939
(Chapter 1095 of the Statutes of 1989) for the Cities of Madera and Chowchilla
and the County of Madera by January 11, 1995, through the recycling of recovered
material, and work toward the waste reduction requirements of fifty percent
(50%) that each jurisdiction must achieve by January 1, 2000. The Facility
became operational on August 15, 1994.
 
     The County of Madera will compensate Madera for its capital costs incurred
in designing, permitting, financing, constructing and equipping the Facility.
These costs were $1,661 and are included in property and equipment in the
accompanying balance sheets. The County of Madera will reimburse Madera for the
equipment and interest costs over a ten year operational period. The County of
Madera will also reimburse Madera for its other operational costs incurred in
connection with the staffing, maintaining and operating of the materials
recovery facility. All of the aforementioned costs are reimbursed to Madera
through receipt of a specified portion of waste disposal fees collected by
Madera on behalf of the County of Madera for landfill operations.
 
     At the termination of the contracts described above, the improvements made
by Madera become the sole and exclusive property of the County of Madera,
subject only to the County of Madera's continuing obligation to pay or reimburse
the Company for any remaining unamortized capital costs of the Facility.
 
     In 1995, Madera started a new line of business which provided clean-up and
waste removal services to residential and commercial construction businesses.
Due to continued losses, in July 1997 Madera ceased operations in this line of
business. The estimated fair value of the remaining assets of the business is
reflected in the accompanying balance sheets as assets held for sale at December
31, 1997. For the years ended December 31, 1995, 1996, and 1997, this business
had revenues of $531, $785 and $193, respectively, and had operating losses of
$290, $397, and $215, respectively.
 
     Madera entered into an exclusive franchise agreement with the City of
Chowchilla on April 8, 1996, whereby Madera was granted the exclusive right and
franchise to collect, haul, and dispose of all solid waste, recyclable solid
waste, and green waste within the city limits of the City of Chowchilla. The
term of this franchise shall continue in force and effect for a period of seven
years, and the City of Chowchilla may renew and extend the franchise for an
additional period of five years or more.
 
                                      F-61
<PAGE>   137
                         MADERA DISPOSAL SYSTEMS, INC.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                                 (IN THOUSANDS)
 
SALE OF THE COMPANY
 
     Effective February 1, 1998, Madera's shareholders entered into an agreement
to sell their stock to Waste Connections, Inc. ("WCI") for cash and stock in
WCI.
 
USE OF ESTIMATES
 
     The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the amounts reported in the financial statements and
accompanying notes. Actual results could differ from those estimates.
 
CASH EQUIVALENTS
 
     Madera considers all highly liquid investments with a maturity of three
months or less when purchased to be cash equivalents.
 
CONCENTRATIONS OF CREDIT RISK
 
     Financial instruments that potentially subject Madera to concentrations of
credit risks consist primarily of accounts receivable. Credit risk on accounts
receivable is minimized as a result of the large and diverse nature of Madera's
customer base. Madera maintains an allowance for losses based on the expected
collectibility of accounts receivable. Credit losses have been within
management's expectations.
 
PROPERTY AND EQUIPMENT
 
     Property and equipment are stated at cost. Improvements or betterments
which significantly extend the life of an asset are capitalized. Expenditures
for maintenance and repair costs are charged to operations as incurred. The cost
of assets retired or otherwise disposed of and the related accumulated
depreciation are eliminated from the accounts in the year of disposal. Gains and
losses resulting from property disposals are included in other income (expense).
Depreciation is computed using the straight-line method over the estimated
useful lives of the assets or lease term, whichever is shorter.
 
     The estimated useful lives are as follows:
 
<TABLE>
<S>                                                      <C>
Machinery and equipment................................   6 - 10 years
Leasehold improvements.................................  10 - 40 years
Furniture and fixtures.................................   6 - 10 years
</TABLE>
 
FAIR VALUE OF FINANCIAL INSTRUMENTS
 
     The carrying values of cash and equivalents approximate their fair values
as of December 31, 1996 and 1997. The carrying values of the long-term debt and
capital lease obligations (Notes 3 and 4) approximate their fair values as of
December 31, 1996 and 1997, based on current incremental borrowing rates for
similar types of borrowing arrangements.
 
REVENUE RECOGNITION
 
     Madera recognizes revenues as services are provided. Certain customers are
billed in advance and, accordingly, recognition of the related revenues is
deferred until the services are provided.
 
                                      F-62
<PAGE>   138
                         MADERA DISPOSAL SYSTEMS, INC.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                                 (IN THOUSANDS)
 
INCOME TAXES
 
     Madera operates under Subchapter S of the Internal Revenue Code for federal
and state income tax reporting purposes. Consequently, all of the income tax
attributes and liabilities of the Madera's operations flow through to the
individual shareholders.
 
CLOSURE AND POST-CLOSURE COSTS
 
     Under regulations pursuant to which the permit for the Fairmead Landfill
was issued, Madera and Madera County, as operator and owner, respectively, are
jointly liable for closure and post-closure liabilities with respect to the
landfill. Madera has not accrued for such liabilities because Madera County, as
required by state law, has established a special fund, into which a designated
portion of tipping fee surcharges are deposited, to pay such liabilities.
Consequently, management of Madera does not believe Madera has any financial
obligation for closure and post-closure costs for the Fairmead Landfill as of
December 31, 1997.
 
 2. PROPERTY AND EQUIPMENT
 
     Property and equipment as of December 31, 1996 and 1997 consists of the
following:
 
<TABLE>
<CAPTION>
                                                               1996      1997
                                                              ------    ------
<S>                                                           <C>       <C>
Machinery and equipment.....................................  $5,480    $5,777
Leasehold improvements......................................     498       500
Furniture and fixtures......................................     137       133
                                                              ------    ------
                                                               6,115     6,410
Less accumulated depreciation and amortization..............   2,315     2,774
                                                              ------    ------
                                                              $3,800    $3,636
                                                              ======    ======
</TABLE>
 
 3. LONG-TERM DEBT
 
     Long-term debt as of December 31, 1996 and 1997 consists of the following:
 
<TABLE>
<CAPTION>
                                                              1996    1997
                                                              ----    ----
<S>                                                           <C>     <C>
Equipment financing notes payable bearing interest at
various fixed and variable rates (ranging from 6.0% to 12.9%
at December 31, 1997); monthly payments of principal and
interest aggregating $16; maturing at various dates through
August 31, 2001; secured by equipment with net book values
aggregating $522 as of December 31, 1997....................  $664    $467
Notes payable to related parties bearing interest at 10.0%;
monthly payments of interest; maturing December 1, 1998.....   150     150
                                                              ----    ----
                                                               814     617
Less: Current portion.......................................   177     288
                                                              ----    ----
Long-term debt..............................................  $637    $329
                                                              ====    ====
</TABLE>
 
     One of the equipment financing notes, with an outstanding balance of $236
as of December 31, 1997, contains certain restrictive covenants, which among
other things require that specified financial balances and ratios be maintained,
restrict the payment of dividends and prohibit the incurrence of additional
indebtedness. As of December 31, 1997, Madera was in compliance with the
covenants.
 
                                      F-63
<PAGE>   139
                         MADERA DISPOSAL SYSTEMS, INC.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                                 (IN THOUSANDS)
 
     As of December 31, 1997, aggregate contractual future principal payments by
calendar year on long-term debt are due as follows:
 
<TABLE>
<S>                                                           <C>
1998........................................................  $288
1999........................................................   149
2000........................................................   122
2001........................................................    58
                                                              ----
                                                              $617
                                                              ====
</TABLE>
 
 4. COMMITMENTS AND CONTINGENCIES
 
COMMITMENTS
 
  Capital Leases
 
     Madera leases certain equipment under capital leases. As of December 31,
1996 and 1997, the following amounts are included in property and equipment as
assets under these capital leases:
 
<TABLE>
<CAPTION>
                                                              1996      1997
                                                             ------    ------
<S>                                                          <C>       <C>
Cost.......................................................  $2,235    $2,605
Less: accumulated amortization.............................     527       780
                                                             ------    ------
Net assets under capital leases............................  $1,708    $1,825
                                                             ======    ======
</TABLE>
 
     The future minimum lease payments under these capital leases along with the
present value of the minimum lease payments as of December 31, 1997 are as
follows:
 
<TABLE>
<CAPTION>
                   MINIMUM LEASE PAYMENTS
                  YEAR ENDING DECEMBER 31:
                  ------------------------
<S>                                                           <C>
          1998..............................................  $  448
          1999..............................................     489
          2000..............................................     427
          2001..............................................     352
          2002..............................................     294
          Thereafter........................................     494
                                                              ------
Total minimum lease payments................................   2,504
Less amount representing interest...........................     665
                                                              ------
Present value of minimum lease payments.....................   1,839
Less current portion........................................     274
                                                              ------
Long-term portion...........................................  $1,565
                                                              ======
</TABLE>
 
OPERATING LEASES
 
     Madera leases its facilities and certain equipment under cancelable
operating leases for periods of one year or less. Rent expense under all
operating leases during the years ended December 31, 1995, 1996 and 1997
amounted to $47, $41 and $33, respectively.
 
PERFORMANCE BONDS AND LETTERS OF CREDIT
 
     Municipal solid waste collection contracts may require performance bonds to
secure contractual performance. As of December 31, 1997, Madera had provided
customers and various regulatory authorities with bonds of approximately $200 to
secure its obligations. If Madera were unable to obtain surety bonds in
sufficient amounts or at acceptable rates, it could be precluded from entering
into additional municipal solid waste collection contracts or obtaining or
retaining landfill operating permits.
 
                                      F-64
<PAGE>   140
                         MADERA DISPOSAL SYSTEMS, INC.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                                 (IN THOUSANDS)
 
ENVIRONMENTAL RISKS
 
     Madera is subject to liability for any environmental damage that its solid
waste facilities may cause to neighboring landowners, particularly as a result
of the contamination of drinking water sources or soil, including damage
resulting from conditions existing prior to the acquisition of such facilities
by Madera. Madera may also be subject to liability for any off-site
environmental contamination caused by pollutants or hazardous substances whose
transportation, treatment or disposal was arranged by Madera or its
predecessors. Any substantial liability for environmental damage incurred by
Madera could have a material adverse effect on Madera's financial condition,
results of operations or cash flows.
 
LEGAL PROCEEDINGS
 
     In the normal course of its business and as a result of the extensive
governmental regulation of the solid waste industry, Madera may periodically
become subject to various judicial and administrative proceeding involving
federal, state or local agencies. In these proceedings, an agency may seek to
impose fines on Madera or to revoke or deny renewal of an operating permit held
by Madera. From time to time Madera may also be subject to actions brought by
citizens' groups or adjacent landowners in connection with the permitting and
licensing of landfills and transfer stations, or alleging environmental damage
or violations of the permits and licenses pursuant to which Madera operates.
 
     In addition, Madera may become party to various claims and suits pending
for alleged damages to persons and property, alleged violations of certain laws
and alleged liabilities arising out of matters occurring during the normal
operation of the waste management business. However, as of December 31, 1997,
there is no current proceeding or litigation involving Madera that Madera
believes will have a material adverse impact on Madera's business, financial
condition, results of operations or cash flows.
 
5. RELATED PARTY TRANSACTIONS
 
     Madera performs repair services on equipment owned and operated by
shareholders of Madera. Revenues relating to these activities were $41, $60 and
$51 for the years ended December 31, 1995, 1996 and 1997, respectively. As of
December 31, 1996 and 1997, Madera has receivables of $100 and $113,
respectively, relating to these activities.
 
6. 401(k) PLAN
 
     Madera has a voluntary savings and investment plan (the "401(k) Plan"). The
401(k) Plan is available to all eligible employees of Madera. Under the 401(k)
Plan Madera is required to match 100% of employees' contributions up to a
maximum of 3% of the employees' wages. During the years ended December 31, 1995,
1996 and 1997, Madera's 401(k) Plan expenses were approximately $78, $107 and
$108, respectively.
 
                                      F-65
<PAGE>   141
                         MADERA DISPOSAL SYSTEMS, INC.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                                 (IN THOUSANDS)
 
7. PRO FORMA INCOME TAX INFORMATION (UNAUDITED)
 
     The following unaudited pro forma information reflects income tax expense
(benefit) as if Madera had been subject to federal and state income taxes:
 
<TABLE>
<CAPTION>
                                                         YEAR ENDED DECEMBER 31,
                                                        --------------------------
                                                         1995      1996      1997
                                                        ------    ------    ------
<S>                                                     <C>       <C>       <C>
Current:
  Federal.............................................   $(16)     $(19)     $197
  State...............................................     --        12        57
Deferred:
  Federal.............................................     32       188        33
  State...............................................     14        27         8
                                                         ----      ----      ----
Pro forma income taxes................................   $ 30      $208      $295
                                                         ====      ====      ====
</TABLE>
 
     The pro forma provisions for income taxes for the years ended December 31,
1995, 1996 and 1997 differ from the amounts computed by applying the applicable
statutory federal income tax rate (34%) to income before income taxes due to
state franchise taxes, certain non-deductible expenses and refundable tax
credits.
 
     Madera's pro forma deferred income tax asset of approximately $20 and $54
at December 31, 1996 and 1997, respectively, relates principally to differences
in the recognition of bad debt expenses, state franchise taxes and certain other
temporary differences. Madera also has pro forma deferred tax liabilities at
December 31, 1996 and 1997 of approximately $534 and $570, respectively, which
relate to differences between tax and financial methods of depreciation.
 
8. SUBSEQUENT EVENTS
 
     On January 12, 1998, Madera distributed $131 to its shareholders.
 
                                      F-66
<PAGE>   142
 
               REPORT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS
 
Board of Directors and Shareholders
Arrow Sanitary Service, Inc.
 
     We have audited the accompanying balance sheet of Arrow Sanitary Service,
Inc. as of September 30, 1997, and the related statement of income and retained
earnings, and cash flows for the year then ended. These financial statements are
the responsibility of the Company's management. Our responsibility is to express
an opinion on these financial statements based on our audit.
 
     We conducted our audit in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audit provides a reasonable basis for our opinion.
 
     In our opinion, the financial statements referred to above present fairly,
in all material respects, the financial position of Arrow Sanitary Service, Inc.
at September 30, 1997, and the results of its operations and its cash flows for
the year then ended, in conformity with generally accepted accounting
principles.
 
                                                 /s/ ERNST & YOUNG LLP
 
Sacramento, California
July 8, 1998
 
                                      F-67
<PAGE>   143
 
                          ARROW SANITARY SERVICE, INC.
 
                                 BALANCE SHEETS
                (DOLLARS IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
 
                                     ASSETS
 
<TABLE>
<CAPTION>
                                                              SEPTEMBER 30,     MARCH 31,
                                                                  1997            1998
                                                              -------------    -----------
                                                                               (UNAUDITED)
<S>                                                           <C>              <C>
Current assets:
  Cash and cash equivalents.................................     $  205          $  274
  Accounts receivable.......................................        520             694
  Prepaid expenses and other current assets.................         37              48
                                                                 ------          ------
          Total current assets..............................        762           1,016
Property and equipment, net.................................        815             926
Intangible assets, net......................................        121             118
Other assets................................................         48              13
                                                                 ------          ------
                                                                 $1,746          $2,073
                                                                 ======          ======
 
                           LIABILITIES AND SHAREHOLDERS' EQUITY
Current liabilities:
  Accounts payable..........................................     $  470          $  439
  Deferred revenue..........................................         11              11
  Accrued liabilities.......................................        151             213
  Current portion of long-term debt.........................        168             154
                                                                 ------          ------
          Total current liabilities.........................        800             817
Long-term portion of capital lease obligations..............         --              45
Long-term debt..............................................        429             450
Deferred income taxes.......................................         34              46
Commitments and contingencies (Note 4)
Shareholders' equity:
  Common stock: no par value; 1,000 shares authorized; 600
     shares issued and outstanding..........................         47              47
  Treasury stock payments...................................        (25)            (25)
  Retained earnings.........................................        461             693
                                                                 ------          ------
          Total shareholders' equity........................        483             715
                                                                 ------          ------
                                                                 $1,746          $2,073
                                                                 ======          ======
</TABLE>
 
                            See accompanying notes.
                                      F-68
<PAGE>   144
 
                          ARROW SANITARY SERVICE, INC.
 
                   STATEMENTS OF INCOME AND RETAINED EARNINGS
                             (DOLLARS IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                               SIX MONTHS ENDED
                                                               YEAR ENDED         MARCH 31,
                                                              SEPTEMBER 30,    ----------------
                                                                  1997          1997      1998
                                                              -------------    ------    ------
                                                                                 (UNAUDITED)
<S>                                                           <C>              <C>       <C>
Revenues....................................................     $6,209        $2,872    $3,148
Operating expenses:
  Cost of operations........................................      4,970         2,080     2,255
  Selling, general and administrative.......................        776           448       369
  Depreciation and amortization.............................        143            70        85
                                                                 ------        ------    ------
Income from operations......................................        320           274       439
Interest expense............................................        (72)          (39)      (30)
Other income (expense), net.................................         (2)           (5)       40
                                                                 ------        ------    ------
Income before income taxes..................................        246           230       449
Income tax expense..........................................       (117)          (98)     (217)
                                                                 ------        ------    ------
Net income..................................................        129           132       232
Retained earnings, beginning of period......................        332           332       461
                                                                 ------        ------    ------
Retained earnings, end of period............................     $  461        $  464    $  693
                                                                 ======        ======    ======
</TABLE>
 
                            See accompanying notes.
                                      F-69
<PAGE>   145
 
                          ARROW SANITARY SERVICE, INC.
 
                            STATEMENTS OF CASH FLOWS
                INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                               SIX MONTHS ENDED
                                                               YEAR ENDED         MARCH 31,
                                                              SEPTEMBER 30,    ----------------
                                                                  1997          1997      1998
                                                              -------------    ------    ------
                                                                                 (UNAUDITED)
<S>                                                           <C>              <C>       <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
  Net income................................................      $ 129        $ 132     $ 232
  Adjustments to reconcile net income to net cash provided
     by operating activities:
     Depreciation and amortization..........................        143           70        85
     Deferred income taxes..................................         34           --        12
     Gain on sale of property and equipment.................         (2)          --        --
     Changes in operating assets and liabilities:
       Accounts receivable..................................         (2)        (105)     (174)
       Prepaid expenses and other current assets............         19           17       (11)
       Other assets.........................................          1            2        35
       Accounts payable.....................................         43          (46)      (31)
       Accrued liabilities..................................         70          110        62
                                                                  -----        -----     -----
  Net cash provided by operating activities.................        435          180       210
CASH FLOWS FROM INVESTING ACTIVITIES:
  Capital expenditures for property and equipment...........       (117)         (80)     (134)
  Treasury stock payments...................................         (5)          --        --
                                                                  -----        -----     -----
Net cash used in investing activities.......................       (122)         (80)     (134)
CASH FLOWS FROM FINANCING ACTIVITIES:
  Proceeds from long-term debt..............................         --          200        97
  Principal payments on long-term debt......................       (191)        (298)     (104)
                                                                  -----        -----     -----
Net cash used in financing activities.......................       (191)         (98)       (7)
                                                                  -----        -----     -----
Net increase in cash........................................        122            2        69
Cash and cash equivalents, beginning of period..............         83           83       205
                                                                  -----        -----     -----
Cash and cash equivalents, end of period....................      $ 205        $  85     $ 274
                                                                  =====        =====     =====
SUPPLEMENTARY DISCLOSURES OF CASH FLOW INFORMATION AND
  NON-CASH TRANSACTIONS:
Cash paid for interest......................................      $  74        $  39     $  33
                                                                  =====        =====     =====
</TABLE>
 
                            See accompanying notes.
                                      F-70
<PAGE>   146
 
                          ARROW SANITARY SERVICE, INC.
 
                         NOTES TO FINANCIAL STATEMENTS
                               SEPTEMBER 30, 1997
                             (DOLLARS IN THOUSANDS)
                  (INFORMATION RELATING TO MARCH 31, 1998 AND
           THE SIX MONTHS ENDED MARCH 31, 1997 AND 1998 IS UNAUDITED)
 
 1. ORGANIZATION, BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
ORGANIZATION AND BUSINESS
 
     Arrow Sanitary Service, Inc. (the "Company") is a regional, integrated,
non-hazardous solid waste services company that provides collection, hauling and
disposal of recyclable materials for residential and commercial customers in
various counties of Oregon and Washington in and around Portland, Oregon.
 
SALE OF THE COMPANY
 
     On June 17, 1998, the Company's shareholders entered into an agreement to
sell all capital stock in the Company to Waste Connections, Inc. ("WCI") for
cash and common stock of WCI.
 
INTERIM FINANCIAL INFORMATION
 
     The unaudited interim financial statements as of March 31, 1998 and for the
six months ended March 31, 1997 and 1998 have been prepared in accordance with
generally accepted accounting principles for interim financial information.
Accordingly, they do not include all of the information and footnotes required
by generally accepted accounting principles for complete financial statements.
In the opinion of management, all adjustments (consisting of normal recurring
adjustments) considered necessary for a fair presentation have been included.
Operating results for the six months ended March 31, 1998 are not necessarily
indicative of the results that may be expected for the year ended September 30,
1998.
 
USE OF ESTIMATES
 
     The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the amounts reported in the financial statements and
accompanying notes. Actual results could differ from those estimates.
 
CASH EQUIVALENTS
 
     The Company considers all highly liquid investments with a maturity of
three months or less when purchased to be cash equivalents.
 
CONCENTRATIONS OF CREDIT RISK
 
     Financial instruments that potentially subject the Company to
concentrations of credit risk consist primarily of accounts receivable. Credit
risk on accounts receivable is minimized as a result of the large and diverse
nature of the Company's customer base. Credit losses have been within
management's expectations.
 
PROPERTY AND EQUIPMENT
 
     Property and equipment are stated at cost. Improvements or betterments
which significantly extend the life of an asset are capitalized. Expenditures
for maintenance and repair costs are charged to operations as incurred. The cost
of assets retired or otherwise disposed of and the related accumulated
depreciation are eliminated from the accounts in the year of disposal. Gains and
losses resulting from property disposals are included in other income (expense).
Depreciation is computed using the straight-line method over the estimated
useful lives of the assets, or lease term, whichever is shorter.
 
                                      F-71
<PAGE>   147
                          ARROW SANITARY SERVICE, INC.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                               SEPTEMBER 30, 1997
                             (DOLLARS IN THOUSANDS)
                  (INFORMATION RELATING TO MARCH 31, 1998 AND
           THE SIX MONTHS ENDED MARCH 31, 1997 AND 1998 IS UNAUDITED)
 
 1. ORGANIZATION, BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
(CONTINUED)
     The estimated useful lives of property and equipment are as follows:
 
<TABLE>
<S>                                                       <C>
Buildings...............................................      30 years
Machinery and equipment.................................  3 - 10 years
Rolling stock...........................................      10 years
Furniture and fixtures..................................   3 - 6 years
Containers..............................................  5 - 12 years
</TABLE>
 
INTANGIBLE ASSETS
 
     Intangible assets are comprised of the following at September 30, 1997:
 
<TABLE>
<S>                                                           <C>
Goodwill....................................................  $126
Covenant not to compete.....................................    12
                                                              ----
                                                               138
Accumulated amortization....................................   (17)
                                                              ----
                                                              $121
                                                              ====
</TABLE>
 
     Goodwill represents the excess of the purchase price over the fair value of
the net assets of entities previously acquired by the Company and is amortized
on a straight-line basis over the period of expected benefit of 40 years. The
covenant not to compete is amortized on a straight-line basis over the period of
expected benefit of 5 years.
 
REVENUE RECOGNITION
 
     The Company recognizes revenues as services are provided. Certain customers
are billed in advance and, accordingly, recognition of the related revenues is
deferred until the services are provided.
 
INCOME TAXES
 
     The Company uses the liability method to account for income taxes. Under
this method, deferred tax assets and liabilities are determined based on
differences between the financial reporting and tax bases of assets and
liabilities and are measured using the enacted tax rates and laws that will be
in effect when the differences are expected to reverse.
 
SIGNIFICANT CUSTOMERS AND SUPPLIERS
 
     The Company has three major customers which represent 21%, 14% and 11% of
total sales, respectively, for the year ended September 30, 1997. In addition,
the Company purchases a substantial portion of its recyclable materials and
equipment from four major suppliers.
 
                                      F-72
<PAGE>   148
                          ARROW SANITARY SERVICE, INC.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                               SEPTEMBER 30, 1997
                             (DOLLARS IN THOUSANDS)
                  (INFORMATION RELATING TO MARCH 31, 1998 AND
           THE SIX MONTHS ENDED MARCH 31, 1997 AND 1998 IS UNAUDITED)
 
 2. PROPERTY AND EQUIPMENT
 
     Property and equipment consists of the following:
 
<TABLE>
<CAPTION>
                                                       SEPTEMBER 30,     MARCH 31,
                                                           1997            1998
                                                       -------------    -----------
                                                                        (UNAUDITED)
<S>                                                    <C>              <C>
Land.................................................     $   121         $   121
Buildings............................................         168             168
Machinery and equipment..............................         480             593
Rolling stock........................................       1,026           1,028
Furniture and fixtures...............................         104             109
Containers...........................................         296             342
                                                          -------         -------
                                                            2,195           2,361
Less accumulated depreciation and amortization.......      (1,380)         (1,435)
                                                          -------         -------
                                                          $   815         $   926
                                                          =======         =======
</TABLE>
 
 3. FINANCING ARRANGEMENTS
 
BANK LINE OF CREDIT
 
     The Company maintains a revolving line of credit with a financial
institution. Under the agreement, the Company may borrow an amount up to $150.
Interest on the revolving line of credit accrues at the financial institution's
prime rate (8.5% at September 30, 1997) plus 1.5%. The agreement provides that
the Company comply with various financial and other covenants. The line of
credit had no amounts outstanding at September 30, 1997.
 
LONG-TERM DEBT
 
     Long-term debt as of September 30, 1997 consists of the following:
 
<TABLE>
<S>                                                           <C>
Contract financing notes payable bearing interest at 9%;
  payable in monthly installments of principal and interest
  (ranging from $1 to $2); maturing between October 20, 1998
  and November 15, 2004.....................................  $159
Mortgage financing notes payable bearing interest at 8.25%;
  payable in monthly installments of principal and interest
  of $1; maturing on January 20, 2022; secured by certain
  real estate...............................................   139
Equipment financing notes payable bearing interest (ranging
  from 8.5% to 10.75%); payable in monthly installments of
  principal (ranging from $2 to $5) plus interest; maturing
  on March 20, 1998 and October 12, 2000; secured by the
  Company's accounts receivable, inventory, equipment, and
  certain other assets......................................   299
                                                              ----
                                                               597
Less: current portion.......................................   168
                                                              ----
Long-term debt..............................................  $429
                                                              ====
</TABLE>
 
     One of the equipment financing notes, with no outstanding balance at
September 30, 1997, contains certain restrictive covenants, which among other
things require that specified financial balances and ratios be maintained,
restrict the payment of dividends and prohibit the incurrence of additional
indebtedness.
 
                                      F-73
<PAGE>   149
                          ARROW SANITARY SERVICE, INC.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                               SEPTEMBER 30, 1997
                             (DOLLARS IN THOUSANDS)
                  (INFORMATION RELATING TO MARCH 31, 1998 AND
           THE SIX MONTHS ENDED MARCH 31, 1997 AND 1998 IS UNAUDITED)
 
3. FINANCING ARRANGEMENTS (CONTINUED)
     As of September 30, 1997, aggregate contractual future principal payments
by fiscal year on long-term debt are due as follows:
 
<TABLE>
<S>                                                           <C>
1998........................................................  $168
1999........................................................   121
2000........................................................    81
2001........................................................    27
2002........................................................    26
Thereafter..................................................   174
                                                              ----
                                                              $597
                                                              ====
</TABLE>
 
 4. COMMITMENTS AND CONTINGENCIES
 
COMMITMENTS
 
  Operating Leases
 
     The Company leases its facilities and certain equipment under noncancelable
operating leases. Rent expense under these agreements approximated $50 for the
year ended September 30, 1997.
 
     The future minimum lease payments under these agreements as of September
30, 1997 are as follows:
 
<TABLE>
<S>                                                           <C>
1998........................................................  $ 54
1999........................................................    54
2000........................................................    49
2001........................................................    48
2002........................................................    48
Thereafter..................................................   494
                                                              ----
                                                              $747
                                                              ====
</TABLE>
 
CONTINGENCIES
 
  Legal Proceedings
 
     In the normal course of its business and as a result of the extensive
governmental regulation of the solid waste industry, the Company may
periodically become subject to various judicial and administrative proceedings
involving federal, state or local agencies. In these proceedings, an agency may
seek to impose fines on the Company or to revoke or deny renewal of an operating
permit held by the Company. From time to time the Company may also be subject to
actions brought by citizens' groups or adjacent landowners in connection with
the permitting and licensing of landfills and transfer stations, or alleging
environmental damage or violations of the permits and licenses pursuant to which
the Company operates.
 
     In addition, the Company may become party to various claims and suits
pending for alleged damages to persons and property, alleged violations of
certain laws and alleged liabilities arising out of matters occurring during the
normal operation of the waste management business. However, as of September 30,
1997, there is
 
                                      F-74
<PAGE>   150
                          ARROW SANITARY SERVICE, INC.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                               SEPTEMBER 30, 1997
                             (DOLLARS IN THOUSANDS)
                  (INFORMATION RELATING TO MARCH 31, 1998 AND
           THE SIX MONTHS ENDED MARCH 31, 1997 AND 1998 IS UNAUDITED)
 
 4. COMMITMENTS AND CONTINGENCIES (CONTINUED)
no current proceeding or litigation involving the Company that the Company
believes will have a material adverse impact on the Company's business,
financial condition, results of operations or cash flows.
 
  Employees
 
     Approximately 11 of the Company's route drivers are represented by the
Teamsters Union. The Company entered into a three-year collective bargaining
agreement in March 1998. The Company is not aware of any other organizational
efforts among its employees and believes that its relations with its employees
are good.
 
 5. 401(k) PLAN
 
     The Company has a voluntary savings and investment plan (the "401(k)
Plan"). The 401(k) Plan is available to all eligible employees of the Company.
Under the 401(k) Plan the Company is required to match 3% of employees'
contributions up to a maximum of 6% of the employees' wages once the employee
contributes a minimum of 3%. The Company will match 100% of employee
contributions between 3 and 6%. Sixteen of twenty-one eligible employees
participated in the plan with minimum contributions of at least 3%. During the
year ended September 30, 1997, the Company's 401(k) Plan expense was
approximately $35.
 
 6. INCOME TAXES
 
     The provision for income taxes for the year ended September 30, 1997
consists of the following:
 
<TABLE>
<S>                                                           <C>
Current:
  Federal...................................................  $ 60
  State.....................................................    23
 
Deferred:
  Federal...................................................    29
  State.....................................................     5
                                                              ----
                                                              $117
                                                              ====
</TABLE>
 
     Deferred taxes result from temporary differences in the recognition of
certain expense items for income tax and financial reporting purposes. The
Company's deferred taxes as of September 30, 1997 are substantially comprised of
depreciation deducted for tax purposes that will be recorded in future periods
for financial reporting purposes.
 
     The principal reasons for the difference between the effective income tax
rate and the federal statutory income tax rate are as follows:
 
<TABLE>
<S>                                                           <C>
Federal expense expected at statutory rates.................  $ 84
State and local income taxes, net of Federal benefit........    15
Officers life insurance expense.............................    17
Other.......................................................     1
                                                              ----
                                                              $117
                                                              ====
</TABLE>
 
     The Company paid $10 for income taxes during the year ended September 30,
1997.
 
                                      F-75
<PAGE>   151
                          ARROW SANITARY SERVICE, INC.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                               SEPTEMBER 30, 1997
                             (DOLLARS IN THOUSANDS)
                  (INFORMATION RELATING TO MARCH 31, 1998 AND
           THE SIX MONTHS ENDED MARCH 31, 1997 AND 1998 IS UNAUDITED)
 
7. YEAR 2000 (UNAUDITED)
 
     The Company will need to modify or replace portions of its software so that
its computer systems will function properly with respect to dates in the year
2000 ("Year 2000") and thereafter. To date, the Company has not incurred any
costs related to the Year 2000 project. The Company does not believe that its
expenditures relating to the Year 2000 project will be material. However, if the
required Year 2000 modifications and conversions are not made or are not
completed in a timely manner, the Year 2000 issue could materially affect the
Company's operations.
 
                                      F-76
<PAGE>   152
 
               REPORT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS
 
Board of Directors and Stockholders
Shrader Refuse and Recycling Service Company
 
     We have audited the accompanying balance sheets of Shrader Refuse and
Recycling Service Company as of September 30, 1996 and 1997, and the related
statements of income, stockholders' equity and cash flows for the years then
ended. These financial statements are the responsibility of the Company's
management. Our responsibility is to express an opinion on these financial
statements based on our audits.
 
     We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.
 
     In our opinion, the financial statements referred to above present fairly,
in all material respects, the financial position of Shrader Refuse and Recycling
Service Company at September 30, 1996 and 1997, and the results of its
operations and its cash flows for the years then ended in conformity with
generally accepted accounting principles.
 
GRANT THORNTON LLP
 
Lincoln, Nebraska
August 24, 1998
 
                                      F-77
<PAGE>   153
 
                  SHRADER REFUSE AND RECYCLING SERVICE COMPANY
 
                                 BALANCE SHEETS
               (IN THOUSANDS, EXCEPT SHARE AND PER SHARE AMOUNTS)
 
                                     ASSETS
 
<TABLE>
<CAPTION>
                                                               SEPTEMBER 30,
                                                              ----------------      JUNE 30,
                                                               1996      1997         1998
                                                              ------    ------    -------------
                                                                                   (UNAUDITED)
<S>                                                           <C>       <C>       <C>
Current assets:
  Cash and cash equivalents.................................  $  287    $  116       $  342
  Marketable equity securities..............................     246       403          576
  Accounts receivable, less allowance for doubtful accounts
     of $29 and $32 at September 30, 1996 and 1997,
     respectively...........................................     674       897          808
  Prepaid expenses..........................................      37        69           79
                                                              ------    ------       ------
          Total current assets..............................   1,244     1,485        1,805
Property and equipment, net.................................   3,939     5,195        5,112
Goodwill, net...............................................     223       214          209
Other assets................................................     122       157          208
                                                              ------    ------       ------
                                                              $5,528    $7,051       $7,334
                                                              ======    ======       ======
 
                             LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
  Accounts payable..........................................  $  244    $  202       $  323
  Accrued liabilities.......................................     100       103          117
  Current portion of long-term debt.........................     763       703          703
  Current portion of capital lease obligations..............      18        97           97
                                                              ------    ------       ------
          Total current liabilities.........................   1,125     1,105        1,240
Long-term debt, net of current portion......................   1,676     1,258          959
Capital lease obligations, net of current portion...........     338     1,583        1,511
Commitments and contingencies (Note F)
Stockholders' equity:
     Common stock: $1 par value; 10,000 shares authorized;
       8,571 shares issued and outstanding..................       9         9            9
  Retained earnings.........................................   2,338     3,012        3,465
  Net unrealized gain on marketable equity securities.......      42        84          150
                                                              ------    ------       ------
          Total stockholders' equity........................   2,389     3,105        3,624
                                                              ------    ------       ------
                                                              $5,528    $7,051       $7,334
                                                              ======    ======       ======
</TABLE>
 
        The accompanying notes are an integral part of these statements.
                                      F-78
<PAGE>   154
 
                  SHRADER REFUSE AND RECYCLING SERVICE COMPANY
 
                              STATEMENTS OF INCOME
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                                    NINE
                                                             YEAR ENDED         MONTHS ENDED
                                                           SEPTEMBER 30,          JUNE 30,
                                                          ----------------    ----------------
                                                           1996      1997      1997      1998
                                                          ------    ------    ------    ------
                                                                                (UNAUDITED)
<S>                                                       <C>       <C>       <C>       <C>
Revenues................................................  $5,461    $6,896    $5,027    $5,382
Operating expenses:
  Cost of operations....................................   3,861     4,601     3,241     3,479
  Selling, general and administrative...................     516       567       426       425
  Depreciation and amortization.........................     565       770       546       697
                                                          ------    ------    ------    ------
                                                           4,942     5,938     4,213     4,601
                                                          ------    ------    ------    ------
Income from operations..................................     519       958       814       781
Other income (expense):
  Interest expense......................................    (206)     (292)     (219)     (287)
  Other income, net.....................................      35        59        19        19
                                                          ------    ------    ------    ------
                                                            (171)     (233)     (200)     (268)
                                                          ------    ------    ------    ------
Net income..............................................  $  348    $  725    $  614    $  513
                                                          ======    ======    ======    ======
Pro forma income taxes (unaudited) (Note G).............  $  141    $  290    $  245    $  206
                                                          ------    ------    ------    ------
Pro forma net income (unaudited) (Note G)...............  $  207    $  435    $  369    $  307
                                                          ======    ======    ======    ======
</TABLE>
 
        The accompanying notes are an integral part of these statements.
                                      F-79
<PAGE>   155
 
                  SHRADER REFUSE AND RECYCLING SERVICE COMPANY
 
                       STATEMENT OF STOCKHOLDERS' EQUITY
                    YEARS ENDED SEPTEMBER 30, 1996 AND 1997
                    AND THE NINE MONTHS ENDED JUNE 30, 1998
   (INFORMATION RELATED TO THE NINE MONTHS ENDED JUNE 30, 1998 IS UNAUDITED)
                      (IN THOUSANDS, EXCEPT SHARE AMOUNTS)
 
<TABLE>
<CAPTION>
                                                                                   NET
                                                                                UNREALIZED
                                                                              GAIN (LOSS) ON
                                                  COMMON STOCK                  MARKETABLE         TOTAL
                                                 ---------------   RETAINED       EQUITY       STOCKHOLDERS'
                                                 SHARES   AMOUNT   EARNINGS     SECURITIES        EQUITY
                                                 ------   ------   --------   --------------   -------------
<S>                                              <C>      <C>      <C>        <C>              <C>
Balance October 1, 1995........................  8,571      $9      $2,154         $ (2)          $2,161
Net income.....................................     --      --         348           --              348
Distributions to stockholders..................     --      --        (164)          --             (164)
Change in net unrealized gain (loss) on
  marketable equity securities.................     --      --          --           44               44
                                                 -----      --      ------         ----           ------
Balance at September 30, 1996..................  8,571       9       2,338           42            2,389
Net income.....................................     --      --         725           --              725
Distributions to stockholders..................     --      --         (51)          --              (51)
Change in net unrealized gain (loss) on
  marketable equity securities.................     --      --          --           42               42
                                                 -----      --      ------         ----           ------
Balance at September 30, 1997..................  8,571       9       3,012           84            3,105
Net income.....................................     --      --         513           --              513
Distributions to stockholders..................     --      --         (60)          --              (60)
Change in net unrealized gain (loss) on
  marketable equity securities.................     --      --          --           66               66
                                                 -----      --      ------         ----           ------
Balance at June 30, 1998.......................  8,571      $9      $3,465         $150           $3,624
                                                 =====      ==      ======         ====           ======
</TABLE>
 
         The accompanying notes are an integral part of this statement.
                                      F-80
<PAGE>   156
 
                  SHRADER REFUSE AND RECYCLING SERVICE COMPANY
 
                            STATEMENTS OF CASH FLOWS
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                                         NINE
                                                                 YEAR ENDED          MONTHS ENDED
                                                                SEPTEMBER 30,          JUNE 30,
                                                              -----------------    ----------------
                                                               1996       1997      1997      1998
                                                              -------    ------    ------    ------
                                                                                     (UNAUDITED)
<S>                                                           <C>        <C>       <C>       <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
  Net income................................................  $   348    $  725    $  614    $  513
  Adjustments to reconcile net income to net cash provided
     by operating activities:
     Depreciation and amortization..........................      565       770       546       697
     Realized (gain) loss on marketable equity securities...        8       (23)      (19)      (19)
     Gain on sale of property and equipment.................       (6)       (8)       --        --
     Changes in operating assets and liabilities:
       Accounts receivable, net.............................      (25)     (223)      (49)       89
       Prepaid expenses.....................................       16       (32)       (7)      (10)
       Other assets.........................................       (6)      (35)      (85)      (51)
       Accounts payable.....................................       73       (42)      (30)      121
       Accrued liabilities..................................       23         3        18        14
                                                              -------    ------    ------    ------
          Net cash provided by operating activities.........      996     1,135       988     1,354
                                                              -------    ------    ------    ------
CASH FLOWS FROM INVESTING ACTIVITIES:
  Capital expenditures for property and equipment...........   (2,010)     (655)     (395)     (609)
  Proceeds from sale of property and equipment..............        6        26        --        --
  Purchases of marketable equity securities.................     (272)     (307)     (273)     (232)
  Proceeds from sale of marketable equity securities........       81       215       184       144
                                                              -------    ------    ------    ------
          Net cash used in investing activities.............   (2,195)     (721)     (484)     (697)
                                                              -------    ------    ------    ------
CASH FLOWS FROM FINANCING ACTIVITIES:
  Proceeds from long-term debt..............................    1,777       300       120       250
  Principal payments on long-term debt and capital lease
     obligations............................................     (518)     (834)     (617)     (621)
  Cash distributions made to stockholders...................     (164)      (51)      (39)      (60)
                                                              -------    ------    ------    ------
          Net cash provided by (used in) financing
            activities......................................    1,095      (585)     (536)     (431)
                                                              -------    ------    ------    ------
Net change in cash and cash equivalents.....................     (104)     (171)      (32)      226
Cash and cash equivalents:
  Beginning of period.......................................      391       287       287       116
                                                              -------    ------    ------    ------
  End of period.............................................  $   287    $  116    $  255    $  342
                                                              =======    ======    ======    ======
SUPPLEMENTARY DISCLOSURES OF CASH FLOW INFORMATION AND
  NON-CASH TRANSACTIONS:
  Cash paid for interest....................................  $   206    $  299    $  219    $  287
                                                              =======    ======    ======    ======
  Capital lease obligations incurred for the purchase of
     property and equipment.................................  $   376    $1,380    $1,380    $   --
                                                              =======    ======    ======    ======
</TABLE>
 
        The accompanying notes are an integral part of these statements.
                                      F-81
<PAGE>   157
 
                  SHRADER REFUSE AND RECYCLING SERVICE COMPANY
 
                         NOTES TO FINANCIAL STATEMENTS
                          SEPTEMBER 30, 1996 AND 1997
                             (DOLLARS IN THOUSANDS)
              (INFORMATION RELATING TO JUNE 30, 1998 AND THE NINE
               MONTHS ENDED JUNE 30, 1997 AND 1998 IS UNAUDITED.)
 
NOTE A -- ORGANIZATION, BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
 1. Organization and Business
 
     Shrader Refuse and Recycling Service Company (the "Company") is a
non-hazardous solid waste services company that provides collection, hauling,
disposal and recycling services to residential and commercial customers in
various counties of Nebraska.
 
     The Company derives a portion of its revenue from exclusive municipal
contracts, of which a significant number will be subject to competitive bidding
at some time in the future. The Company intends to bid on additional municipal
contracts as a means of adding customers. There can be no assurance that the
Company will be the successful bidder to obtain or retain contracts that come up
for competitive bidding.
 
 2. Sale of the Company
 
     On July 31, 1998, the Company's stockholders sold all capital stock of the
Company to Waste Connections, Inc. ("WCI") for cash and common stock of WCI.
 
 3. Interim Financial Information
 
     The unaudited interim financial statements as of June 30, 1998 and for the
nine months ended June 30, 1997 and 1998 have been prepared in accordance with
generally accepted accounting principles for interim financial information.
Accordingly, they do not include all of the information and footnotes required
by generally accepted accounting principles for complete financial statements.
In the opinion of management, all adjustments (consisting of normal recurring
adjustments) considered necessary for a fair presentation have been included.
Operating results for the nine months ended June 30, 1998 are not necessarily
indicative of the results that may be expected for the year ending September 30,
1998.
 
 4. Use of Estimates
 
     The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the amounts reported in the financial statements and
accompanying notes. Actual results could differ from those estimates.
 
 5. Cash Equivalents
 
     The Company considers all highly liquid investments with a maturity of
three months or less when purchased to be cash equivalents.
 
 6. Concentrations of Credit Risk
 
     Financial instruments that potentially subject the Company to
concentrations of credit risk consist primarily of accounts receivable. Credit
risk on accounts receivable is minimized as a result of the large and diverse
nature of the Company's customer base. Credit losses have been within
management's expectations.
 
 7. Marketable Equity Securities
 
     The Company's marketable equity securities are classified as "available for
sale" and stated at market value. Unrealized holding gains and losses on such
securities are reported as a separate component of stockholders' equity until
realized.
 
                                      F-82
<PAGE>   158
                  SHRADER REFUSE AND RECYCLING SERVICE COMPANY
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                          SEPTEMBER 30, 1996 AND 1997
                             (DOLLARS IN THOUSANDS)
              (INFORMATION RELATING TO JUNE 30, 1998 AND THE NINE
               MONTHS ENDED JUNE 30, 1997 AND 1998 IS UNAUDITED.)
 
NOTE A -- ORGANIZATION, BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
(CONTINUED)
     Gains and losses on the disposition of marketable equity securities are
determined using the first-in, first-out method. Declines in the fair value of
individual securities below their cost that are other than temporary are
recorded as realized losses through a charge to income.
 
 8. Property and Equipment
 
     Property and equipment are stated at cost. Improvements or betterments
which significantly extend the life of an asset are capitalized. Expenditures
for maintenance and repair costs are charged to operations as incurred. The cost
of assets retired or otherwise disposed of and the related accumulated
depreciation are eliminated from the accounts in the year of disposal. Gains and
losses resulting from property disposals are included in other income or
expense. Depreciation is computed using the straight-line method over the
estimated useful lives of the assets, or lease term, whichever is shorter.
 
     The estimated useful lives of property and equipment are as follows:
 
<TABLE>
<S>                                                        <C>
Buildings under capital leases...........................    10 years
Machinery and equipment..................................  3-10 years
Rolling stock............................................  5-10 years
Containers...............................................  5-12 years
</TABLE>
 
 9. Goodwill
 
     Goodwill represents the excess of the purchase price over the fair value of
the tangible net assets of entities previously acquired by the Company and is
amortized on a straight-line basis over the period of expected benefit of 40
years.
 
10. Revenue Recognition
 
     The Company recognizes revenues as services are provided. Certain customers
are billed in advance and, accordingly, recognition of the related revenues is
deferred until the services are provided.
 
11. Income Taxes
 
     The Company operates under Subchapter "S" of the Internal Revenue Code for
federal and state income tax reporting purposes. Consequently, all of the income
tax attributes and liabilities of the Company's operations flow through to the
individual shareholders.
 
12. Significant Customer
 
     The Company has one major customer which represents 16% of total revenues
for the year ended September 30, 1997.
 
NOTE B -- MARKETABLE EQUITY SECURITIES
 
     At September 30, 1996 and 1997, the aggregate market value of marketable
equity securities exceeded their aggregate cost by $42 and $84, respectively.
Gross unrealized gains totaled $44 and $89 and gross unrealized losses totaled
$2 and $5 at September 30, 1996 and 1997, respectively.
 
                                      F-83
<PAGE>   159
                  SHRADER REFUSE AND RECYCLING SERVICE COMPANY
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                          SEPTEMBER 30, 1996 AND 1997
                             (DOLLARS IN THOUSANDS)
              (INFORMATION RELATING TO JUNE 30, 1998 AND THE NINE
               MONTHS ENDED JUNE 30, 1997 AND 1998 IS UNAUDITED.)
 
NOTE B -- MARKETABLE EQUITY SECURITIES (CONTINUED)
     Proceeds from sales of marketable equity securities during the years ended
September 30, 1996 and 1997 were $81 and $215, respectively. Gross gains of $4
and gross losses of $12 were realized on sales during 1996. Gross gains of $37
and gross losses of $14 were realized on sales during 1997.
 
NOTE C -- PROPERTY AND EQUIPMENT
 
     Property and equipment consists of the following:
 
<TABLE>
<CAPTION>
                                                        SEPTEMBER 30,
                                                       ----------------      JUNE 30,
                                                        1996      1997         1998
                                                       ------    ------    -------------
                                                                            (UNAUDITED)
<S>                                                    <C>       <C>       <C>
Buildings under capital leases.......................  $  376    $1,756       $1,756
Machinery and equipment..............................     440       455          471
Rolling stock........................................   3,359     3,656        4,009
Containers...........................................   1,781     2,089        2,328
                                                       ------    ------       ------
                                                        5,956     7,956        8,564
Less accumulated depreciation and amortization.......   2,017     2,761        3,452
                                                       ------    ------       ------
                                                       $3,939    $5,195       $5,112
                                                       ======    ======       ======
</TABLE>
 
NOTE D -- GOODWILL
 
     Goodwill is comprised of the following:
 
<TABLE>
<CAPTION>
                                                        SEPTEMBER 30,
                                                       ----------------      JUNE 30,
                                                        1996      1997         1998
                                                       ------    ------    -------------
                                                                            (UNAUDITED)
<S>                                                    <C>       <C>       <C>
Goodwill.............................................  $  351    $  351       $  351
Accumulated amortization.............................     128       137          142
                                                       ------    ------       ------
                                                       $  223    $  214       $  209
                                                       ======    ======       ======
</TABLE>
 
NOTE E -- FINANCING ARRANGEMENTS
 
<TABLE>
<CAPTION>
                                                        SEPTEMBER 30,
                                                       ----------------      JUNE 30,
                                                        1996      1997         1998
                                                       ------    ------    -------------
                                                                            (UNAUDITED)
<S>                                                    <C>       <C>       <C>
Notes payable to bank bearing interest at rates
  ranging from 7.75% to 9.50%, payable in monthly
  installments of principal and interest; maturing
  through August 2001................................  $2,244    $1,766       $1,467
Note payable to related party, with interest at 9%
  per annum payable quarterly until monthly
  installments of principal and interest commence on
  November 1997. This note matures July 2003 and is
  without collateral.................................     195       195          195
                                                       ------    ------       ------
                                                        2,439     1,961        1,662
Less current portion.................................     763       703          703
                                                       ------    ------       ------
Long-term debt, net of current portion...............  $1,676    $1,258       $  959
                                                       ======    ======       ======
</TABLE>
 
                                      F-84
<PAGE>   160
                  SHRADER REFUSE AND RECYCLING SERVICE COMPANY
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                          SEPTEMBER 30, 1996 AND 1997
                             (DOLLARS IN THOUSANDS)
              (INFORMATION RELATING TO JUNE 30, 1998 AND THE NINE
               MONTHS ENDED JUNE 30, 1997 AND 1998 IS UNAUDITED.)
 
NOTE E -- FINANCING ARRANGEMENTS (CONTINUED)
     On July 1, 1998, the Company entered into an $875 credit facility with a
bank maturing December 2001. The credit facility is a line of credit through
January 1, 1999, whereupon all borrowings under the facility will be refinanced
on a note payable due in monthly installments through December 2001. Borrowings
bear interest at 8.0% per annum. During July 1998, the Company utilized all of
the credit facility for equipment purchases.
 
     The notes payable to bank and the credit facility are collateralized by
substantially all of the Company's assets and the personal guarantees of the
stockholders. The Company is subject to certain restrictive covenants with the
bank, which among other things, require that a specified debt service coverage
ratio be maintained and restrict the payment of dividends solely to amounts
sufficient to meet the tax requirements of the stockholders relative to the
Company's status as a Subchapter "S" Corporation. The Company was in compliance
with or received waivers of the covenant requirements for the year ended
September 30, 1997.
 
     As of September 30, 1997, aggregate contractual future principal payments
by fiscal year are due as follows:
 
<TABLE>
<S>                                                   <C>
1998................................................  $  703
1999................................................     546
2000................................................     355
2001................................................     284
2002................................................      39
Thereafter..........................................      34
                                                      ------
                                                      $1,961
                                                      ======
</TABLE>
 
     In conjunction with the acquisition of the Company by WCI on July 31, 1998,
all of the outstanding long-term debt of the Company was repaid.
 
NOTE F -- COMMITMENTS AND CONTINGENCIES
 
COMMITMENTS
 
  Leases
 
     The Company leases three facilities from a related party under two ten-year
leases expiring in 2005 and 2007. For financial reporting purposes, minimum
lease rentals relating to the facilities have been capitalized. The related
assets and obligations have been recorded using the Company's implicit borrowing
rate at the inception of the leases. The following amounts are included in
property and equipment as buildings under capital leases:
 
<TABLE>
<CAPTION>
                                                  SEPTEMBER 30,
                                                  --------------     JUNE 30,
                                                  1996     1997        1998
                                                  ----    ------    -----------
                                                                    (UNAUDITED)
<S>                                               <C>     <C>       <C>
Buildings.......................................  $376    $1,756      $1,756
Less accumulated amortization...................    38       121         253
                                                  ----    ------      ------
                                                  $338    $1,635      $1,503
                                                  ====    ======      ======
</TABLE>
 
                                      F-85
<PAGE>   161
                  SHRADER REFUSE AND RECYCLING SERVICE COMPANY
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                          SEPTEMBER 30, 1996 AND 1997
                             (DOLLARS IN THOUSANDS)
              (INFORMATION RELATING TO JUNE 30, 1998 AND THE NINE
               MONTHS ENDED JUNE 30, 1997 AND 1998 IS UNAUDITED.)
 
NOTE F -- COMMITMENTS AND CONTINGENCIES (CONTINUED)
     The following is a schedule by fiscal years of future minimum lease
payments under capital leases together with the present value of the net minimum
lease payments as of September 30, 1997:
 
<TABLE>
<S>                                                           <C>
1998........................................................  $  321
1999........................................................     321
2000........................................................     321
2001........................................................     321
2002........................................................     321
Thereafter..................................................   1,368
                                                              ------
Total minimum lease payments................................   2,973
Less amount representing interest...........................   1,293
                                                              ------
                                                              $1,680
                                                              ======
Current portion.............................................  $   97
Long-term portion...........................................   1,583
                                                              ------
                                                              $1,680
                                                              ======
</TABLE>
 
     Prior to entering into the current leases, the Company leased these
facilities on a month-to-month basis from the related party. The Company
recognized rent expense of $171 and $117 in fiscal 1996 and 1997, respectively.
Total rent and minimum lease payments to the related party during fiscal 1996
and 1997 were $249 and $260, respectively.
 
     In conjunction with the acquisition of the Company by WCI on July 31, 1998,
the current leases were terminated, two of the three facilities were acquired
and the remaining facility was leased under a two-year lease with an option to
extend for an additional two years through July 2002.
 
  Noncompete Agreement
 
     The Company has a noncompete agreement with a related party that requires
the Company to pay $4 a month through October 1997 provided the related party
abides by the noncompete agreement. The Company paid the related party $44 in
each of the fiscal years ended September 30, 1996 and 1997.
 
CONTINGENCIES
 
  Legal Proceedings
 
     In the normal course of its business and as a result of the extensive
governmental regulation of the solid waste industry, the Company may
periodically become subject to various judicial and administrative proceedings
involving federal, state or local agencies. In these proceedings, an agency may
seek to impose fines on the Company or to revoke or deny renewal of an operating
permit held by the Company. From time to time the Company may also be subject to
actions brought by citizens' groups or adjacent landowners in connection with
the permitting and licensing of landfills and transfer stations, or alleging
environmental damage or violations of the permits and licenses pursuant to which
the Company operates.
 
     In addition, the Company may become party to various claims and suits
pending for alleged damages to persons and property, alleged violations of
certain laws and alleged liabilities arising out of matters occurring
                                      F-86
<PAGE>   162
                  SHRADER REFUSE AND RECYCLING SERVICE COMPANY
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                          SEPTEMBER 30, 1996 AND 1997
                             (DOLLARS IN THOUSANDS)
              (INFORMATION RELATING TO JUNE 30, 1998 AND THE NINE
               MONTHS ENDED JUNE 30, 1997 AND 1998 IS UNAUDITED.)
 
NOTE F -- COMMITMENTS AND CONTINGENCIES (CONTINUED)
during the normal operation of the waste management business. As of September
30, 1997, there is no current proceeding or litigation involving the Company
that the Company believes will have a material adverse impact on the Company's
business, financial condition, results of operations or cash flows.
 
NOTE G -- PRO FORMA INCOME TAX INFORMATION (UNAUDITED)
 
     Unaudited pro forma information reflects income tax expense as if the
Company had been subject to federal and state income taxes. The pro forma
provisions for income taxes for the years ended September 30, 1996 and 1997 and
the nine month periods ended June 30, 1997 and 1998 differ from the amounts
computed by applying the applicable statutory federal income tax rate (34%) to
income before income taxes due to state income taxes and certain non-deductible
expenses.
 
     The following is a summary of pro forma income taxes for the years ended
September 30, 1996 and 1997:
 
<TABLE>
<CAPTION>
                                                                YEAR ENDED
                                                              SEPTEMBER 30,
                                                              --------------
                                                              1996     1997
                                                              -----    -----
<S>                                                           <C>      <C>
Current:
  Federal...................................................  $ 47     $ 66
  State.....................................................    10       14
Deferred:
  Federal...................................................    69      171
  State.....................................................    15       39
                                                              ----     ----
Pro forma income taxes......................................  $141     $290
                                                              ====     ====
</TABLE>
 
     The Company's pro forma deferred income tax liabilities of approximately
$739 and $949 at September 30, 1996 and 1997, respectively, relate principally
to differences between tax and financial methods of reporting depreciation
expense and the use of the cash method of accounting for income tax purposes
which gives rise to differences between financial statement and tax return
recognition of receivables, prepaid expenses, accounts payable and accrued
liabilities.
 
NOTE H -- FINANCIAL INSTRUMENTS
 
     The following estimated fair value information pertains to the Company's
financial instruments and does not purport to represent the aggregate net fair
value of the Company.
 
     The following methods and assumptions were used to estimate the fair value
of each class of financial instruments for which it is practicable to estimate
that value:
 
     Cash and cash equivalents: The carrying amount approximates fair value
because of the short maturity of those instruments.
 
     Marketable equity securities: Quoted market prices for the Company's
marketable equity securities are used to estimate fair value.
 
     Long-term debt and capital lease obligations: Current incremental borrowing
rates for similar type borrowings are used to estimate the fair value of the
Company's long-term debt and capital lease obligations.
 
                                      F-87
<PAGE>   163
                  SHRADER REFUSE AND RECYCLING SERVICE COMPANY
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                          SEPTEMBER 30, 1996 AND 1997
                             (DOLLARS IN THOUSANDS)
              (INFORMATION RELATING TO JUNE 30, 1998 AND THE NINE
               MONTHS ENDED JUNE 30, 1997 AND 1998 IS UNAUDITED.)
 
NOTE H -- FINANCIAL INSTRUMENTS (CONTINUED)
     The carrying amounts and estimated fair values of the Company's financial
instruments are as follows:
 
<TABLE>
<CAPTION>
                                                       SEPTEMBER 30, 1996       SEPTEMBER 30, 1997
                                                      ---------------------    ---------------------
                                                                  ESTIMATED                ESTIMATED
                                                      CARRYING      FAIR       CARRYING      FAIR
                                                       AMOUNT       VALUE       AMOUNT       VALUE
                                                      --------    ---------    --------    ---------
<S>                                                   <C>         <C>          <C>         <C>
Financial Assets:
  Cash and cash equivalents.........................   $  287      $  287       $  116      $  116
  Marketable equity securities......................      246         246          403         403
Financial Liabilities:
  Long-term debt....................................    2,439       2,528        1,961       1,970
  Capital lease obligations.........................      356         486        1,680       2,038
</TABLE>
 
                                      F-88
<PAGE>   164
 
               REPORT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS
 
The Members
Contractor's Waste Removal, L.C.
 
     We have audited the accompanying balance sheet of Contractor's Waste
Removal, L.C. as of December 31, 1997, and the related statements of operations
and change in members' deficit and cash flows for the year then ended. These
financial statements are the responsibility of the Company's management. Our
responsibility is to express an opinion on these financial statements based on
our audit.
 
     We conducted our audit in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audit provides a reasonable basis for our opinion.
 
     In our opinion, the financial statements referred to above present fairly,
in all material respects, the financial position of Contractor's Waste Removal,
L.C. at December 31, 1997, and the results of its operations and its cash flows
for the year then ended in conformity with generally accepted accounting
principles.
 
                                                 /s/ ERNST & YOUNG LLP
 
Sacramento, California
August 26, 1998
 
                                      F-89
<PAGE>   165
 
                        CONTRACTOR'S WASTE REMOVAL, L.C.
 
                                 BALANCE SHEETS
                                 (IN THOUSANDS)
 
                                     ASSETS
 
<TABLE>
<CAPTION>
                                                              DECEMBER 31,     MARCH 31,
                                                                  1997           1998
                                                              ------------    -----------
                                                                              (UNAUDITED)
<S>                                                           <C>             <C>
Current assets:
  Accounts receivable, net of allowance for doubtful
     accounts of $75........................................     $  256          $  222
Property and equipment:
  Containers................................................      1,332           1,703
  Furniture and fixtures....................................        104             104
  Vehicles..................................................        454             562
                                                                 ------          ------
                                                                  1,890           2,369
Less: accumulated depreciation and amortization.............        316             375
                                                                 ------          ------
                                                                  1,574           1,994
Other assets................................................         34              14
                                                                 ------          ------
                                                                 $1,864          $2,230
                                                                 ======          ======
 
                            LIABILITIES AND MEMBERS' DEFICIT
Current liabilities:
  Overdraft on bank balance.................................     $   35          $   38
  Accounts payable..........................................        291             135
  Accrued liabilities.......................................        121              71
  Lines of credit...........................................        392             392
  Current portion of long-term debt.........................        510           1,025
  Current portion of notes payable to members...............         50              50
  Current portion of capital lease obligations..............         59              59
                                                                 ------          ------
          Total current liabilities.........................      1,458           1,770
Long-term debt..............................................        375             518
Notes payable to members....................................         95              95
Capital lease obligations...................................        180             178
Commitments and contingencies (Note 6)
Members' deficit............................................       (244)           (331)
                                                                 ------          ------
                                                                 $1,864          $2,230
                                                                 ======          ======
</TABLE>
 
                            See accompanying notes.
                                      F-90
<PAGE>   166
 
                        CONTRACTOR'S WASTE REMOVAL, L.C.
 
            STATEMENTS OF OPERATIONS AND CHANGE IN MEMBERS' DEFICIT
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                              THREE MONTHS ENDED
                                                               YEAR ENDED         MARCH 31,
                                                              DECEMBER 31,    ------------------
                                                                  1997         1997       1998
                                                              ------------    -------    -------
                                                                                 (UNAUDITED)
<S>                                                           <C>             <C>        <C>
Revenues....................................................     $1,903        $ 377      $ 438
Operating expenses:
  Cost of operations........................................      1,234          262        315
  Selling, general and administrative.......................        359           67         97
  Depreciation and amortization.............................        202           48         59
                                                                 ------        -----      -----
Income (loss) from operations...............................        108           --        (33)
Interest expense............................................       (178)         (40)       (54)
                                                                 ------        -----      -----
Net loss....................................................        (70)         (40)       (87)
Members' withdrawals........................................        (14)          --         --
                                                                 ------        -----      -----
Net change in members' deficit..............................        (84)         (40)       (87)
Members' deficit, beginning of period.......................       (160)        (160)      (244)
                                                                 ------        -----      -----
Members' deficit, end of period.............................     $ (244)       $(200)     $(331)
                                                                 ======        =====      =====
</TABLE>
 
                            See accompanying notes.
                                      F-91
<PAGE>   167
 
                        CONTRACTOR'S WASTE REMOVAL, L.C.
 
                            STATEMENTS OF CASH FLOWS
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                              THREE MONTHS ENDED
                                                               YEAR ENDED         MARCH 31,
                                                              DECEMBER 31,    ------------------
                                                                  1997         1997       1998
                                                              ------------    -------    -------
                                                                                 (UNAUDITED)
<S>                                                           <C>             <C>        <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
  Net loss..................................................     $ (70)        $ (40)     $ (87)
  Adjustments to reconcile net loss to net cash provided by
     (used in) operating activities:
     Depreciation and amortization..........................       202            48         59
     Changes in operating assets and liabilities:
       Accounts receivable, net.............................       (83)          (18)        34
       Other assets.........................................       (27)           (1)        20
       Accounts payable.....................................       105           (81)      (156)
       Accrued liabilities..................................        18           (13)       (50)
                                                                 -----         -----      -----
     Net cash provided by (used in) operating activities....       145          (105)      (180)
CASH FLOWS FROM INVESTING ACTIVITIES:
  Capital expenditures for property and equipment...........      (235)           --         --
CASH FLOWS FROM FINANCING ACTIVITIES:
  Proceeds from long-term debt and notes payable to
     members................................................       435           229        208
  Principal payments on long-term debt and notes payable to
     members................................................      (309)         (146)       (29)
  Principal payments on capital lease obligations...........       (45)          (12)        (2)
  Member withdrawals........................................       (14)           --         --
                                                                 -----         -----      -----
Net cash provided by financing activities...................        67            71        177
                                                                 -----         -----      -----
Net change in overdraft in bank balances....................       (23)          (34)        (3)
Overdraft in bank balances at beginning of period...........       (12)          (12)       (35)
                                                                 -----         -----      -----
Overdraft in bank balances at end of period.................     $ (35)        $ (46)     $ (38)
                                                                 =====         =====      =====
SUPPLEMENTARY DISCLOSURES OF CASH FLOW INFORMATION:
Cash paid for interest......................................     $ 151         $  40      $  54
                                                                 =====         =====      =====
</TABLE>
 
                            See accompanying notes.
                                      F-92
<PAGE>   168
 
                        CONTRACTOR'S WASTE REMOVAL, L.C.
 
                         NOTES TO FINANCIAL STATEMENTS
                               DECEMBER 31, 1997
                                 (IN THOUSANDS)
                  (INFORMATION RELATING TO MARCH 31, 1998 AND
          THE THREE MONTHS ENDED MARCH 31, 1997 AND 1998 IS UNAUDITED)
 
 1. ORGANIZATION, BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
ORGANIZATION AND BUSINESS
 
     Contractor's Waste Removal, L.C. (the "Company") is a Utah limited
liability company. The Company is a non-hazardous solid waste services company
that provides collection, hauling and disposal of materials primarily for
commercial customers in various counties in the State of Utah.
 
     Upon the sale or liquidation of the Company, the members have verbally
agreed that each member will receive an amount equal to their original
contribution basis in the Company as a first priority distribution after payment
of all debt and other obligations of the Company including any notes payable to
members. Remaining proceeds, if any, will be split between the members based
upon their respective ownership percentages of the Company.
 
INTERIM FINANCIAL INFORMATION
 
     The unaudited interim financial statements as of March 31, 1998 and for the
three months ended March 31, 1997 and 1998 have been prepared in accordance with
generally accepted accounting principles for interim financial information.
Accordingly, they do not include all of the information and footnotes required
by generally accepted accounting principles for complete financial statements.
In the opinion of management, all adjustments (consisting of normal recurring
adjustments) considered necessary for a fair presentation have been included.
Operating results for the three months ended March 31, 1998 are not necessarily
indicative of the results that may be expected for the year ended December 31,
1998.
 
USE OF ESTIMATES
 
     The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the amounts reported in the financial statements and
accompanying notes. Actual results could differ from those estimates.
 
CONCENTRATIONS OF CREDIT RISK
 
     Financial instruments that potentially subject the Company to
concentrations of credit risks consist primarily of accounts receivable. Credit
risk on accounts receivable is minimized as a result of the large and diverse
nature of the Company's customer base. The Company does maintain an allowance
for such credit losses. Credit losses have been within management's
expectations.
 
PROPERTY AND EQUIPMENT
 
     Property and equipment are stated at cost. Improvements or betterments
which significantly extend the life of an asset are capitalized. Expenditures
for maintenance and repair costs are charged to operations as incurred.
Depreciation is computed using the straight-line method over the estimated
useful lives of the assets, or lease term, whichever is shorter.
 
     The estimated useful lives are as follows:
 
<TABLE>
<S>                                                       <C>
Containers..............................................  10-12 years
Furniture and fixtures..................................    3-5 years
Vehicles................................................      5 years
</TABLE>
 
                                      F-93
<PAGE>   169
                        CONTRACTOR'S WASTE REMOVAL, L.C.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                                 (IN THOUSANDS)
                  (INFORMATION RELATING TO MARCH 31, 1998 AND
          THE THREE MONTHS ENDED MARCH 31, 1997 AND 1998 IS UNAUDITED)
 
REVENUE RECOGNITION
 
     The Company recognizes revenues as services are provided.
 
INCOME TAXES
 
     In conformity with the Internal Revenue Code and applicable state and local
tax statutes, taxable income or loss of the Company is required to be reported
in the tax returns of the individual members and, accordingly, no provision has
been made in the accompanying financial statements for any federal, state, or
local income taxes.
 
 2. SHORT-TERM BORROWINGS
 
     The Company maintains four revolving lines of credit (the "Lines") with a
financial institution. Under the Lines, the Company may borrow an amount up to
$410. Borrowings under the Lines bear interest at the financial institution's
prime rate (8.5% at December 31, 1997) plus 3.25%. The Lines are secured by the
Company's accounts receivable and equipment and are personally guaranteed by the
members. The Lines had $392 in the aggregate outstanding at December 31, 1997.
 
 3. LONG-TERM DEBT
 
     Long-term debt as of December 31, 1997 consists of the following:
 
<TABLE>
<S>                                                           <C>
Unsecured notes payable to private individuals bearing
  interest at 10%; payable in monthly installments of
  interest with the principal amount due at maturity;
  maturing on May 31, 1998 and July 3, 2010.................  $  282
Equipment financing notes payable; bearing interest at rates
  ranging from 8.9% to 13%; payable in monthly installments
  of principal plus interest; maturing June 4, 2000 through
  June 1, 2003; secured by property and equipment and
  personally guaranteed by the members......................     584
Other.......................................................      19
                                                              ------
                                                                 885
Less: current portion.......................................     510
                                                              ------
Long-term debt..............................................  $  375
                                                              ======
</TABLE>
 
     As of December 31, 1997, aggregate contractual future principal payments by
fiscal year on long-term debt are due as follows:
 
<TABLE>
<S>                                                           <C>
1998........................................................  $  510
1999........................................................     101
2000........................................................     101
2001........................................................      54
2002........................................................      14
Thereafter..................................................     105
                                                              ------
                                                              $  885
                                                              ======
</TABLE>
 
                                      F-94
<PAGE>   170
                        CONTRACTOR'S WASTE REMOVAL, L.C.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                                 (IN THOUSANDS)
                  (INFORMATION RELATING TO MARCH 31, 1998 AND
          THE THREE MONTHS ENDED MARCH 31, 1997 AND 1998 IS UNAUDITED)
 
 4. NOTES PAYABLE TO MEMBERS
 
     The Company has various notes payable to members which bear interest at
rates ranging from 11% to 13% payable in monthly installments of principal and
interest. The notes mature on January 1, 1998 through July 1, 2005.
 
     As of December 31, 1997, aggregate contractual future principal payments by
fiscal year on notes payable to members are due as follows:
 
<TABLE>
<S>                                                           <C>
1998........................................................  $   50
1999........................................................      15
2000........................................................      13
2001........................................................      15
2002........................................................      14
Thereafter..................................................      38
                                                              ------
                                                              $  145
                                                              ======
</TABLE>
 
 5. CAPITAL LEASE OBLIGATION
 
     Property and equipment includes $443 of equipment under capital lease as of
December 31, 1997. Accumulated amortization for such equipment was $47 as of
December 31, 1997.
 
     The future minimum lease payments under the capital lease along with the
present value of the minimum lease payments as of December 31, 1997 are as
follows:
 
          Minimum lease payments
          Year ending December 31:
 
<TABLE>
<S>                                                           <C>
1998........................................................  $ 83
1999........................................................    77
2000........................................................    77
2001........................................................    53
                                                              ----
Total minimum lease payments................................   290
Less amount representing interest...........................    51
                                                              ----
Present value of minimum lease payments.....................   239
Current portion.............................................    59
                                                              ----
Amounts due after one year..................................  $180
                                                              ====
</TABLE>
 
 6. COMMITMENTS AND CONTINGENCIES
 
COMMITMENTS
 
  Operating Leases
 
     The Company leases its facilities and certain equipment under
non-cancellable operating leases for periods ranging from 1 to 3 years. Rent
expense under operating leases was approximately $31 for the year ended December
31, 1997. The future minimum lease payments under operating leases are $28, $29
and $15 for the years ended December 31, 1998, 1999, and 2000, respectively.
 
                                      F-95
<PAGE>   171
                        CONTRACTOR'S WASTE REMOVAL, L.C.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                                 (IN THOUSANDS)
                  (INFORMATION RELATING TO MARCH 31, 1998 AND
          THE THREE MONTHS ENDED MARCH 31, 1997 AND 1998 IS UNAUDITED)
 
CONTINGENCIES
 
  Legal Proceedings
 
     In the normal course of its business and as a result of the extensive
governmental regulation of the solid waste industry, the Company may
periodically become subject to various judicial and administrative proceedings
involving federal, state or local agencies. In these proceedings, an agency may
seek to impose fines on the Company or to revoke or deny renewal of an operating
permit held by the Company.
 
     In addition, the Company may become party to various claims and suits
pending for alleged damages to persons and property, alleged violations of
certain laws and alleged liabilities arising out of matters occurring during the
normal operation of the waste management business. However, as of December 31,
1997, there is no current proceeding or litigation involving the Company that
the Company believes will have a material adverse impact on the Company's
business, financial condition, results of operations and cash flows.
 
 7. RELATED PARTY TRANSACTIONS
 
     During the year ended December 31, 1997, the Company purchased
approximately $98 of containers from a Company 50% owned by a member.
 
 8. YEAR 2000 (UNAUDITED)
 
     The Company will need to modify or replace portions of its software so that
its computer systems will function properly with respect to dates in the year
2000 ("Year 2000") and thereafter. To date, the Company has not incurred any
costs related to the Year 2000 project. The Company does not believe that its
expenditures relating to the Year 2000 project will be material. However, if the
required Year 2000 modifications and conversions are not made or are not
completed in a timely manner, the Year 2000 issue could materially affect the
Company's operations.
 
 9. SUBSEQUENT EVENTS
 
ACQUISITION OF UTAH DUMPSTER
 
     The Company entered into an agreement effective January 1, 1998 to purchase
the assets of Utah Dumpster, a non-hazardous solid waste services company, for
total consideration of $600 (consisting primarily of assumed liabilities of Utah
Dumpster). The acquisition will be accounted for as a purchase. No amounts have
been included in the accompanying December 31, 1997 financial statements with
respect to the assets, liabilities, or operations of Utah Dumpster. The
operations of Utah Dumpster have been included in the Company's unaudited
statements of operations for the three months ended March 31, 1998.
 
SALE OF THE COMPANY
 
     On June 1, 1998, the Company's Members entered into an agreement to sell
all of the Company membership interests to Waste Connections, Inc. ("WCI") for
cash and stock of WCI.
 
                                      F-96
<PAGE>   172
 
               REPORT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS
 
Board of Directors and Stockholders
Curry Transfer and Recycling, Inc.
 
     We have audited the accompanying consolidated balance sheet of Curry
Transfer and Recycling, Inc. as of December 31, 1997, and the related
consolidated statements of income and retained earnings, and cash flows for the
year then ended. These financial statements are the responsibility of the
Company's management. Our responsibility is to express an opinion on these
financial statements based on our audit.
 
     We conducted our audit in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audit provides a reasonable basis for our opinion.
 
     In our opinion, the financial statements referred to above present fairly,
in all material respects, the consolidated financial position of Curry Transfer
and Recycling, Inc. at December 31, 1997, and the consolidated results of its
operations and its cash flows for the year then ended, in conformity with
generally accepted accounting principles.
 
                                                 /s/ ERNST & YOUNG LLP
 
Sacramento, California
July 31, 1998
 
                                      F-97
<PAGE>   173
 
                       CURRY TRANSFER AND RECYCLING, INC.
 
                          CONSOLIDATED BALANCE SHEETS
              (IN THOUSANDS, EXCEPT SHARE AND PER SHARE ACCOUNTS)
 
                                     ASSETS
 
<TABLE>
<CAPTION>
                                                              DECEMBER 31,     MARCH 31,
                                                                  1997           1998
                                                              ------------    -----------
                                                                              (UNAUDITED)
<S>                                                           <C>             <C>
Current assets:
  Cash and cash equivalents.................................     $  225         $  297
  Marketable securities.....................................        460            478
  Accounts receivable.......................................        388            379
  Prepaid expenses and other current assets.................         78             49
                                                                 ------         ------
          Total current assets..............................      1,151          1,203
Property and equipment, net.................................      1,244          1,269
Intangible assets, net......................................        110            107
Other assets................................................        185            167
                                                                 ------         ------
                                                                 $2,690         $2,746
                                                                 ======         ======
 
                          LIABILITIES AND STOCKHOLDERS' EQUITY
 
Current liabilities:
  Accounts payable..........................................     $  122         $  114
  Accrued expenses..........................................         97            104
  Accrued income taxes......................................        159            172
  Deferred revenue..........................................        205            206
  Current portion of long-term debt.........................        213            200
  Current portion of capital lease obligations..............         90            101
                                                                 ------         ------
          Total current liabilities.........................        886            897
Long-term debt, net of current portion......................        222            175
Capital lease obligations, net of current portion...........        141            141
Deferred income taxes.......................................         85             85
Commitments and contingencies (Note 5)
Stockholders' equity:
  Common stock; no par value; 2,500 shares authorized,
     issued and outstanding.................................         67             67
  Retained earnings.........................................      1,604          1,660
  Unrealized holding gains on marketable securities.........         39             75
  Treasury stock agreement..................................       (354)          (354)
                                                                 ------         ------
Total stockholders' equity..................................      1,356          1,448
                                                                 ------         ------
                                                                 $2,690         $2,746
                                                                 ======         ======
</TABLE>
 
                            See accompanying notes.
                                      F-98
<PAGE>   174
 
                       CURRY TRANSFER AND RECYCLING, INC.
 
            CONSOLIDATED STATEMENTS OF INCOME AND RETAINED EARNINGS
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                              THREE MONTHS ENDED
                                                               YEAR ENDED         MARCH 31,
                                                              DECEMBER 31,    ------------------
                                                                  1997         1997       1998
                                                              ------------    -------    -------
                                                                                 (UNAUDITED)
<S>                                                           <C>             <C>        <C>
Revenues....................................................     $3,617       $  800     $  795
Operating expenses:
  Cost of operations........................................      2,259          548        481
  Selling, general and administrative.......................        655          147        159
  Depreciation and amortization.............................        260           61         69
                                                                 ------       ------     ------
Income from operations......................................        443           44         86
Other income (expense):
  Interest and dividend income..............................         25            2          7
  Interest expense..........................................        (75)          (9)       (12)
  Gain on sale of assets....................................         41           --          9
  Other income..............................................         23           --         --
                                                                 ------       ------     ------
Income before income taxes..................................        457           37         90
Income tax provision........................................        183           15         34
                                                                 ------       ------     ------
Net income..................................................        274           22         56
Retained earnings, beginning of period......................      1,330        1,330      1,604
                                                                 ------       ------     ------
Retained earnings, end of period............................     $1,604       $1,352     $1,660
                                                                 ======       ======     ======
</TABLE>
 
                            See accompanying notes.
                                      F-99
<PAGE>   175
 
                       CURRY TRANSFER AND RECYCLING, INC.
 
                     CONSOLIDATED STATEMENTS OF CASH FLOWS
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                              THREE MONTHS
                                                                                 ENDED
                                                               YEAR ENDED      MARCH 31,
                                                              DECEMBER 31,    ------------
                                                                  1997        1997    1998
                                                              ------------    ----    ----
                                                                              (UNAUDITED)
<S>                                                           <C>             <C>     <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income..................................................     $ 274        $ 22    $ 56
Adjustments to reconcile net income to net cash provided by
  operating activities:
  Depreciation and amortization.............................       260          61      69
  Deferred income taxes.....................................         9          --      --
  Gain on sale of assets....................................       (41)         --      (9)
  Changes in operating assets and liabilities:
     Accounts receivable....................................       (26)        (22)      9
     Prepaid expenses and other assets......................       (16)        (29)     29
     Accounts payable.......................................        (3)        (21)     (8)
     Accrued expenses.......................................        16          44       7
     Accrued income taxes...................................        88          15      13
     Deferred revenue.......................................        17           5       1
                                                                 -----        ----    ----
Net cash provided by operating activities...................       578          75     167
CASH FLOWS FROM INVESTING ACTIVITIES:
  Purchases of property and equipment.......................      (218)         (9)    (19)
  Proceeds from sale of property and equipment..............        89          --      22
  Purchases of marketable securities........................      (125)        (52)    (18)
  Proceeds from sale of marketable securities...............        72          --      --
                                                                 -----        ----    ----
Net cash used in investing activities.......................      (182)        (61)    (15)
CASH FLOWS FROM FINANCING ACTIVITIES:
  Payments on long-term debt................................     $(156)       $(14)   $(51)
  Proceeds from long-term debt..............................        --          --
  Payments of revolving line of credit......................       (32)        (23)     --
  Payments for acquisition of treasury stock................       (30)         (8)
  Payments on capital lease obligations.....................       (71)         (6)    (29)
                                                                 -----        ----    ----
Net cash used in financing activities.......................      (289)        (51)    (80)
                                                                 -----        ----    ----
Net increase (decrease) in cash and cash equivalents........       107         (37)     72
Cash and cash equivalents, beginning of period..............       118         118     225
                                                                 -----        ----    ----
Cash and cash equivalents, end of period....................     $ 225        $ 81    $297
                                                                 =====        ====    ====
SUPPLEMENTARY DISCLOSURES OF CASH FLOW INFORMATION AND
  NON-CASH TRANSACTIONS:
  Cash paid for interest....................................     $  49
                                                                 =====
  Cash paid for income taxes................................     $ 131
                                                                 =====
  Purchase of equipment with capital lease obligations......     $ 182
                                                                 =====
Sale of land for note receivable............................     $  27
                                                                 =====
</TABLE>
 
                            See accompanying notes.
                                      F-100
<PAGE>   176
 
                       CURRY TRANSFER AND RECYCLING, INC.
 
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
       (INFORMATION RELATING TO MARCH 31, 1998 AND THE THREE MONTHS ENDED
                     MARCH 31, 1997 AND 1998 IS UNAUDITED)
 
 1. ORGANIZATION, BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
ORGANIZATION AND BUSINESS
 
     Curry Transfer and Recycling, Inc. ("CTR") provides full service waste
disposal to residential and commercial customers in the Curry County, Oregon
area including the cities of Brookings, Gold Beach, and Port Orford and the
unincorporated areas of Curry County under exclusive franchise agreements that
expire from 2009 to 2011.
 
     Oregon Waste Technology, Inc. ("OWT"), a wholly-owned subsidiary of CTR,
provides sani-can rentals, septic tank pumping, and drain maintenance to the
general public in the Curry County area including the cities of Brookings, Gold
Beach, and Port Orford and the unincorporated areas of Curry County.
 
SALE OF THE COMPANY
 
     On June 25, 1998, the Company's stockholders entered into an agreement to
sell all capital stock in the Company to Waste Connections, Inc. ("WCI") for
cash.
 
PRINCIPLES OF CONSOLIDATION
 
     The consolidated financial statements includes the accounts of CTR and OWT
(collectively, "the Company"). All significant intercompany transactions and
balances have been eliminated in consolidation.
 
INTERIM FINANCIAL INFORMATION
 
     The unaudited interim financial statements as of March 31, 1998 and for the
three months ended March 31, 1997 and 1998 have been prepared in accordance with
generally accepted accounting principles for interim financial information.
Accordingly, they do not include all of the information and footnotes required
by generally accepted accounting principles for complete financial statements.
In the opinion of management, all adjustments (consisting of normal recurring
adjustments) considered necessary for a fair presentation have been included.
Operating results for the three months ended March 31, 1998 are not necessarily
indicative of the results that may be expected for the year ended December 31,
1998.
 
USE OF ESTIMATES
 
     The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the amounts reported in the consolidated financial
statements and accompanying notes. Actual results could differ from those
estimates.
 
CASH EQUIVALENTS
 
     The Company considers all highly liquid investments with original
maturities of three months or less to be cash equivalents.
 
PROPERTY AND EQUIPMENT
 
     Property and equipment are stated at cost. Expenditures for maintenance,
repairs, and minor renewals are charged to operations as incurred. Improvements
and betterments that significantly extend the life of an asset are capitalized.
 
                                      F-101
<PAGE>   177
                       CURRY TRANSFER AND RECYCLING, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
       (INFORMATION RELATING TO MARCH 31, 1998 AND THE THREE MONTHS ENDED
                     MARCH 31, 1997 AND 1998 IS UNAUDITED)
 
     Depreciation is calculated using the straight-line method over the
estimated useful life of the asset. Machinery and equipment have lives between 5
and 10 years. Buildings and improvements have lives between 15 and 30 years.
Assets purchased under capital leases are depreciated using the straight-line
method over the estimated useful life of the asset or the lease term, whichever
is shorter.
 
CONCENTRATIONS OF CREDIT RISK
 
     Financial instruments that potentially subject the Company to
concentrations of credit risk consist primarily of accounts receivable. The
Company grants credit to qualified local customers and generally does not
require collateral. Credit risk on accounts receivable is minimized as a result
of the large and diverse nature of the Company's customer base. Credit losses
have been within management's expectations.
 
INTANGIBLE ASSETS
 
     Intangible assets are comprised of the following at December 31, 1997:
 
<TABLE>
<S>                                                           <C>
Goodwill....................................................  $ 137
Franchise agreements........................................    235
Covenants not to compete....................................     27
Other.......................................................      1
                                                              -----
                                                                400
Accumulated amortization....................................   (290)
                                                              -----
                                                              $ 110
                                                              =====
</TABLE>
 
     Goodwill represents the excess of the purchase price over the fair value of
the net assets of entities previously acquired by the Company and is amortized
on a straight-line basis over the period of expected benefit of 40 years.
Franchise agreements are amortized on a straight-line basis over the period of
expected benefits of 9 to 10 years. The covenants not to compete are amortized
on a straight-line basis over the period of expected benefit.
 
REVENUE RECOGNITION
 
     The Company recognizes revenues as services are provided. Certain customers
are billed in advance and, accordingly, recognition of the related revenues is
deferred until the services are provided.
 
INCOME TAXES
 
     The Company uses the liability method to account for income taxes. Under
this method, deferred tax assets and liabilities are determined based on
differences between the financial reporting and tax bases of assets and
liabilities and are measured using the enacted tax rates and laws that will be
in effect when the differences are expected to reverse.
 
                                      F-102
<PAGE>   178
                       CURRY TRANSFER AND RECYCLING, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
       (INFORMATION RELATING TO MARCH 31, 1998 AND THE THREE MONTHS ENDED
                     MARCH 31, 1997 AND 1998 IS UNAUDITED)
 
 2. MARKETABLE SECURITIES
 
     Marketable securities consist of the following at December 31, 1997:
 
<TABLE>
<CAPTION>
                                                                           APPROXIMATE
                                                                ORIGINAL   FAIR MARKET
                                             NUMBER OF SHARES     COST        VALUE
                                             ----------------   --------   -----------
<S>                                          <C>                <C>        <C>
Nuveen Municipal Bond Fund.................       30,640          $298        $340
                                                  ======          ====        ====
Putnam Investments Mutual funds............        4,351          $ 96        $ 96
                                                  ======          ====        ====
Nuveen Growth and Income Fund..............          835          $ 21        $ 19
                                                  ======          ====        ====
Certificate of deposit.....................          N/A          $  5        $  5
                                                  ======          ====        ====
</TABLE>
 
     For the year ended December 31, 1997, a gain of $3 was realized using the
average cost of shares sold.
 
     The Nuveen Municipal Bond Fund shares are classified as available for sale
marketable debt securities.
 
     Total approximate fair market values of marketable securities at December
31, 1997 were $460, and were determined using quoted market prices. The net
unrealized holding gains on available for sale securities have been included as
a separate component of stockholders' equity and increased $9 during 1997.
 
 3. PROPERTY AND EQUIPMENT
 
     Property and equipment consist of the following:
 
<TABLE>
<CAPTION>
                                                      DECEMBER 31,     MARCH 31,
                                                          1997           1998
                                                      ------------    -----------
                                                                      (UNAUDITED)
<S>                                                   <C>             <C>
Land................................................    $   112         $   112
Buildings...........................................        340             340
Machinery and equipment.............................      2,080           2,170
Leased machinery and equipment......................        423             424
                                                        -------         -------
                                                          2,955           3,046
Less: accumulated depreciation......................     (1,711)         (1,777)
                                                        -------         -------
          Total fixed assets, net...................    $ 1,244         $ 1,269
                                                        =======         =======
</TABLE>
 
                                      F-103
<PAGE>   179
                       CURRY TRANSFER AND RECYCLING, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
       (INFORMATION RELATING TO MARCH 31, 1998 AND THE THREE MONTHS ENDED
                     MARCH 31, 1997 AND 1998 IS UNAUDITED)
 
 4. LONG-TERM DEBT AND CAPITAL LEASE OBLIGATIONS
 
LONG-TERM DEBT
 
     Long-term debt consists of the following at December 31, 1997:
 
<TABLE>
<S>                                                           <C>
Mortgage payable to an individual; bearing interest at
  10.25%; payable in monthly installments of $1 through June
  26, 2001; secured by land with a net book value of $12 at
  December 31, 1997.........................................  $  32
Notes payable to lending institutions; bearing interest
  ranging from 8.75 to 11%; payable in monthly installments
  ranging from $1 to $2 through December 18, 1999; secured
  by various equipment and vehicles with a net book value of
  $104 at December 31, 1997.................................     54
Note payable to banks; bearing interest ranging from 1.75%
  over prime to 14%; payable in one payment of $112 on
  September 18, 1998 and monthly installments ranging from
  $1 to $2 through February 10, 1999; secured by equipment
  and various vehicles with a net book value of $18 at
  December 31, 1997, and 30,424 shares of marketable
  securities (Note 2).......................................    135
Note payable to an individual interest imputed at 8%,
  payable in monthly installments of $2,500 through December
  15, 2007 under a stock purchase agreement secured by
  treasury stock............................................    214
                                                              -----
          Total long-term debt..............................    435
Less: current portion.......................................   (213)
                                                              -----
                                                              $ 222
                                                              =====
</TABLE>
 
     As of December 31, 1997, the Company has the ability to borrow an
additional $65 on one of its notes payable to a bank.
 
     As of December 31, 1997, aggregate contractual future principal payments by
calendar year on long-term debt are due as follows:
 
<TABLE>
<S>                                                           <C>
1998........................................................  $213
1999........................................................    60
2000........................................................    37
2001........................................................    30
2002........................................................    30
Thereafter..................................................    65
                                                              ----
                                                              $435
                                                              ====
</TABLE>
 
CAPITAL LEASE OBLIGATIONS
 
     Capital lease obligations consist of the following at December 31, 1997:
 
<TABLE>
<S>                                                           <C>
Capital lease obligations payable to banks at an imputed
  interest rate ranging from 9.75% to 13% payable in monthly
  installments ranging from $0.5 to $2 through June 14,
  2002; secured by various equipment. vehicles and buildings
  with a net book value of $365 at December 31, 1997........  $231
                                                              ----
Total present value of capital lease obligations............   231
Less: current portion.......................................   (90)
                                                              ----
                                                              $141
                                                              ====
</TABLE>
 
                                      F-104
<PAGE>   180
                       CURRY TRANSFER AND RECYCLING, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
       (INFORMATION RELATING TO MARCH 31, 1998 AND THE THREE MONTHS ENDED
                     MARCH 31, 1997 AND 1998 IS UNAUDITED)
 
     As of December 31, 1997, aggregate contractual future lease payments on
capital lease obligations by calendar year are due as follows:
 
<TABLE>
<S>                                                           <C>
1998........................................................  $107
1999........................................................    75
2000........................................................    60
2001........................................................    13
2002........................................................     7
                                                              ----
Total payments on capital lease obligations.................   262
Less: amount representing interest..........................   (31)
                                                              ----
Present value of capital lease obligations..................  $231
                                                              ====
</TABLE>
 
 5. COMMITMENTS AND CONTINGENCIES
 
OPERATING LEASES
 
     The Company leases certain office equipment. Office equipment and property
is rented under cancellable, month-to-month leases.
 
     The Company currently leases land, under a month-to-month operating lease,
from a stockholder. The monthly rent expense is $3.
 
     The Company leases two garbage trucks under a month-to-month operating
lease from an affiliated company. The monthly rent expense is $5.
 
     The Company leases a transfer station, under an operating lease which
terminates in December 1998. Future minimum rental payments required under the
transfer station lease are $7 in 1998.
 
     Rent expense for the year ended December 31, 1997 was $133.
 
ENVIRONMENTAL RISKS
 
     The Company is subject to liability for environmental damage that the solid
waste facilities it operates may cause to neighboring landowners, particularly
as a result of the contamination of drinking water sources or soil, including
damage resulting from conditions existing prior to use of such facilities by the
Company. The Company may also be subject to liability for any off-site
environmental contamination caused by pollutants or hazardous substances whose
transportation, treatment or disposal was arranged by the Company or its
predecessors. Any substantial liability for environmental damage incurred by the
Company could have a material adverse effect on the Company's financial
condition, results of operations or cash flows.
 
LEGAL PROCEEDINGS
 
     In the normal course of its business and as a result of the extensive
governmental regulation of the solid waste industry, the Company may
periodically become subject to various judicial and administrative proceedings
involving federal, state or local agencies. In these proceedings, an agency may
seek to impose fines on the Company or to revoke or deny renewal of an operating
permit held by the Company. From time to time the Company may also be subject to
actions brought by citizens' groups or adjacent landowners in connection
 
                                      F-105
<PAGE>   181
                       CURRY TRANSFER AND RECYCLING, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
       (INFORMATION RELATING TO MARCH 31, 1998 AND THE THREE MONTHS ENDED
                     MARCH 31, 1997 AND 1998 IS UNAUDITED)
 
with the permitting and licensing of landfills and transfer stations, or
alleging environmental damage or violations of the permits and licenses pursuant
to which the Company operates.
 
     In addition, the Company may become party to various claims and suits
pending for alleged damages to persons and property, alleged violations of
certain laws and alleged liabilities arising out of matters occurring during the
normal operation of the waste management business. However, as of December 31,
1997, there is no current proceeding or litigation involving the Company that
the Company believes will have a material adverse impact on the Company's
business, financial condition, results of operations or cash flows.
 
 6. TREASURY STOCK AGREEMENT
 
     In November 1993, CTR entered into an agreement to purchase 1,225 shares of
common stock held by one of its stockholders at $368 per share. At December 31,
1997, CTR had paid $139 for 378 shares of stock. The agreement allows for
adjustments to the price per share based on certain future events and requires
the shares to be held in an escrow account pending the Company's payments on a
note payable issued to the former shareholder in connection with the agreement.
As of December 31, 1997, 928 shares were held in escrow.
 
     At December 31, 1997, $354 has been recorded as a contra-equity account,
which reflects $139 of payments made to the former stockholder through December
31, 1997 and a $215 note payable due to the former stockholder (discounted to
its net present value assuming 8% imputed interest).
 
     Subsequent to December 31, 1997, CTR made five payments totaling $13 under
the terms of this agreement, and the entire balance was paid in connection with
the sale of the Company on June 25, 1998.
 
 7. INCOME TAXES
 
     The provision for income taxes for the year ended December 31, 1997
consists of the following:
 
<TABLE>
<S>                                                           <C>
Current:
  Federal...................................................  $140
  State.....................................................    34
Deferred:
  Federal...................................................     8
  State.....................................................     1
                                                              ----
                                                              $183
                                                              ====
</TABLE>
 
     Deferred taxes result from temporary differences in the recognition of
certain revenue and expense items for income tax and financial reporting
purposes. The Company's deferred taxes as of December 31, 1997 are substantially
comprised of depreciation deducted for tax purposes that will be recorded in
future periods for financial reporting purposes.
 
                                      F-106
<PAGE>   182
                       CURRY TRANSFER AND RECYCLING, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
       (INFORMATION RELATING TO MARCH 31, 1998 AND THE THREE MONTHS ENDED
                     MARCH 31, 1997 AND 1998 IS UNAUDITED)
 
     The principal reasons for the difference between the effective income tax
rate and the federal statutory income tax rate are as follows:
 
<TABLE>
<S>                                                           <C>
Federal expense expected at statutory rates.................  $155
State and local income taxes, net of Federal benefit........    23
Other.......................................................     5
                                                              ----
                                                              $183
                                                              ====
</TABLE>
 
 8. 401(k) PLAN
 
     The Company has a voluntary savings and investment plan (the "Plan"). The
Plan is available to all eligible employees of the Company. Eligible employees
are those which have been employed with the Company for a year or more. The
employees are not required to contribute to the Plan. During the year ended
December 31, 1997, twelve of the nineteen eligible employees participated in the
Plan and the Company's expense was $11.
 
 9. TRUST AGREEMENTS
 
     During 1997, the Company acted as an agent for Curry County, Oregon,
pursuant to two trust agreements by and between the Company, various local
governmental agencies, and a national bank (the "Agreements"). The Agreements
require the Company to collect rates established by Curry County from customers
and remit such funds to the trusts established to provide closure/post closure
funding for two landfills located in or around Curry County, Oregon. No trust
assets or liabilities have been recorded in the Company's financial statements
as of December 31, 1997.
 
10. YEAR 2000 (UNAUDITED)
 
     The Company will need to modify or replace portions of its software so that
its computer systems will function properly with respect to dates in the year
2000 ("Year 2000") and thereafter. To date, the company has not incurred any
costs related to the Year 2000 project. The Company does not believe that its
expenditures relating to the Year 2000 project will be material. However, if the
required Year 2000 modifications and conversions are not made or are not
completed in a timely manner, the Year 2000 issue could materially affect the
Company's operations.
 
                                      F-107
<PAGE>   183
 
               REPORT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS
 
Board of Directors and Stockholders
B&B Sanitation
 
     We have audited the accompanying combined balance sheet of B&B Sanitation
(See Note A1) as of December 31, 1997, and the related combined statements of
earnings, stockholders' deficit, and cash flows for the year then ended. These
financial statements are the responsibility of the Companies' management. Our
responsibility is to express an opinion on these financial statements based on
our audit.
 
     We conducted our audit in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audit provides a reasonable basis for our opinion.
 
     In our opinion, the combined financial statements referred to above present
fairly, in all material respects, the combined financial position of B&B
Sanitation as of December 31, 1997, and the combined results of their operations
and their combined cash flows for the year then ended in conformity with
generally accepted accounting principles.
 
GRANT THORNTON LLP
 
Oklahoma City, Oklahoma
October 1, 1998
 
                                      F-108
<PAGE>   184
 
                                 B&B SANITATION
 
                            COMBINED BALANCE SHEETS
                                 (IN THOUSANDS)
 
                                     ASSETS
 
<TABLE>
<CAPTION>
                                                              DECEMBER 31,         MARCH 31,
                                                                  1997               1998
                                                              ------------        -----------
                                                                                  (UNAUDITED)
<S>                                                           <C>                 <C>
CURRENT ASSETS
  Cash......................................................     $   28             $    2
  Accounts receivable.......................................        200                194
                                                                 ------             ------
          Total current assets..............................        228                196
PROPERTY AND EQUIPMENT -- AT COST, net......................        925                975
RESTRICTED INVESTMENTS......................................         41                 41
OTHER ASSETS................................................         32                 26
                                                                 ------             ------
                                                                 $1,226             $1,238
                                                                 ======             ======
 
                            LIABILITIES AND STOCKHOLDERS' DEFICIT
 
CURRENT LIABILITIES
  Accounts payable..........................................     $   26             $   75
  Current portion of long-term debt.........................        364                371
  Accrued liabilities.......................................         33                 26
                                                                 ------             ------
          Total current liabilities.........................        423                472
LONG-TERM DEBT, less current maturities.....................        798                774
LANDFILL CLOSURE LIABILITY..................................        458                477
COMMITMENTS AND CONTINGENCIES (note F)......................         --                 --
STOCKHOLDERS' DEFICIT
  Common stock..............................................     $    3             $    3
  Accumulated deficit.......................................       (456)              (488)
                                                                 ------             ------
                                                                   (453)              (485)
                                                                 ------             ------
                                                                 $1,226             $1,238
                                                                 ======             ======
</TABLE>
 
        The accompanying notes are an integral part of these statements.
                                      F-109
<PAGE>   185
 
                                 B&B SANITATION
 
                        COMBINED STATEMENTS OF EARNINGS
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                             THREE MONTHS
                                                                                ENDED
                                                               YEAR ENDED     MARCH 31,
                                                              DECEMBER 31,   ------------
                                                                  1997       1997    1998
                                                              ------------   ----    ----
                                                                             (UNAUDITED)
<S>                                                           <C>            <C>     <C>
Revenues....................................................     $1,965      $439    $497
Operating expenses
  Cost of operations........................................      1,074       262     275
  Selling, general, and administrative expenses.............        320        75      91
  Depreciation..............................................        259        58      63
                                                                 ------      ----    ----
          Total Operating Expenses..........................      1,653       395     429
                                                                 ------      ----    ----
          Operating income..................................        312        44      68
Other income (expense)
  Interest..................................................       (108)      (25)    (27)
  Other.....................................................          1        --      --
                                                                 ------      ----    ----
          Total other income (expense)......................       (107)      (25)    (27)
                                                                 ------      ----    ----
          NET EARNINGS......................................     $  205      $ 19    $ 41
                                                                 ------      ----    ----
Pro forma income tax expense (unaudited) (Note I)...........     $   78      $  7    $ 16
                                                                 ------      ----    ----
Pro forma net earnings (unaudited) (Note I).................     $  127      $ 12    $ 25
                                                                 ======      ====    ====
</TABLE>
 
        The accompanying notes are an integral part of these statements.
                                      F-110
<PAGE>   186
 
                                 B&B SANITATION
 
                  COMBINED STATEMENT OF STOCKHOLDERS' DEFICIT
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                              COMMON    ACCUMULATED
                                                              STOCK       DEFICIT      TOTAL
                                                              ------    -----------    -----
<S>                                                           <C>       <C>            <C>
Balance at January 1, 1997..................................    $3         $(532)      $(529)
Distributions...............................................    --          (139)       (139)
Contributions...............................................    --            10          10
Net earnings................................................    --           205         205
                                                                --         -----       -----
Balance at December 31, 1997................................     3          (456)       (453)
Distributions, net (unaudited)..............................    --           (73)        (73)
Net earnings (unaudited)....................................    --            41          41
                                                                --         -----       -----
Balance at March 31, 1998 (unaudited).......................    $3         $(488)      $(485)
                                                                ==         =====       =====
</TABLE>
 
         The accompanying notes are an integral part of this statement.
                                      F-111
<PAGE>   187
 
                                 B&B SANITATION
 
                       COMBINED STATEMENTS OF CASH FLOWS
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                              THREE MONTHS ENDED
                                                               YEAR ENDED         MARCH 31,
                                                              DECEMBER 31,    ------------------
                                                                  1997         1997       1998
                                                              ------------    -------    -------
                                                                                 (UNAUDITED)
<S>                                                           <C>             <C>        <C>
Increase (Decrease) in Cash
Cash flows from operating activities
  Net earnings..............................................     $ 205         $  19      $  41
  Adjustments to reconcile net earnings to net cash provided
     by operations
     Depreciation...........................................       259            57         63
     Change in assets and liabilities
       Accounts receivable..................................       (45)          (18)         6
       Other assets.........................................       (19)          (20)         6
       Accounts payable.....................................        10            61         49
       Accrued liabilities..................................        16             2         (7)
       Landfill closure liability...........................        56            11         19
                                                                 -----         -----      -----
          Net cash provided by operations...................       482           112        177
Cash flows from investing activities
  Purchase of property and equipment........................      (383)         (120)      (113)
  Purchase of investments...................................       (41)           --         --
                                                                 -----         -----      -----
          Net cash used in investing activities.............      (424)         (120)      (113)
Cash flows from financing activities
  Proceeds from long-term debt..............................       329            39         --
  Payments on long-term debt................................      (253)           --        (17)
  Distributions to stockholders.............................      (139)          (24)       (73)
  Contributions by stockholders.............................        10            --         --
                                                                 -----         -----      -----
          Net cash provided by (used in) financing
            activities......................................       (53)           15        (90)
                                                                 -----         -----      -----
          NET INCREASE (DECREASE) IN CASH...................         5             7        (26)
Cash at beginning of period.................................        23            23         28
                                                                 -----         -----      -----
Cash at end of period.......................................     $  28         $  30      $   2
                                                                 -----         -----      -----
Cash paid during the period for interest....................     $ 109         $  25      $  27
                                                                 =====         =====      =====
</TABLE>
 
        The accompanying notes are an integral part of these statements.
                                      F-112
<PAGE>   188
 
                                 B&B SANITATION
 
                     NOTES TO COMBINED FINANCIAL STATEMENTS
                               DECEMBER 31, 1997
                  (DOLLARS IN THOUSANDS EXCEPT SHARE AMOUNTS)
 
NOTE A -- BASIS OF PRESENTATION AND NATURE OF OPERATIONS
 
     The accompanying combined financial statements include the accounts of B&B
Sanitation, Inc. ("B&B"), Red Carpet Landfill, Inc. ("Red Carpet"), and Darlin
Equipment, Inc. ("Darlin"), collectively referred to as "B&B Sanitation" or the
"Company" which are all owned by the same two shareholders. All significant
intercompany balances and transactions have been eliminated.
 
     B&B's principal operations consist of collection, transfer, and disposal of
nonhazardous solid waste for commercial and residential customers. Red Carpet's
principal operations consist of the operation of the landfill in which B&B
disposes of waste. Darlin's principal operations consist of leasing heavy
equipment to Red Carpet.
 
NOTE B -- SUMMARY OF ACCOUNTING POLICIES
 
     The summary of the significant accounting policies applied in the
preparation of the accompanying combined financial statements follows.
 
     1. Property and Equipment
 
     Depreciation is provided principally on accelerated methods over estimated
useful lives ranging from three to ten years.
 
     2. Income Taxes
 
     In accordance with B&B's, Red Carpet's, and Darlin's elections under
Subchapter S of the Internal Revenue Code, corporate taxable income is generally
treated as passing directly through to the owners and is not subject to income
tax at the corporate level. Accordingly, no provision has been made for income
taxes.
 
     3. Use of Estimates
 
     The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect certain reported amounts and disclosures; accordingly,
actual results could differ from those estimates.
 
     4. Revenue Recognition
 
     Revenues are recognized as services are provided.
 
     5. Closure and Post-Closure Costs
 
     The Companies have a financial obligation relating to closure and
post-closure costs of its disposal facilities. The Companies have accrued for
these future obligations relating to closure and post-closure costs of its
landfill (generally for a term of thirty years after final closure of the
landfill), based on engineering estimates of current costs of remediation and
consumption of permitted landfill airspace and the remaining useful airspace
volume on the landfill.
 
     6. Restricted Investments
 
     The Companies have placed certain monies to be used only for landfill
closure and post-closure liabilities in a trust account for the benefit of the
State of Oklahoma. The Companies' securities held as restricted investments are
classified as trading and are recorded at fair value on the balance sheet with
the change in fair value for the period included in earnings. The securities
have a fair value of $40 at December 31, 1997 with gross unrealized gains of $0
and gross unrealized losses of $1.
 
                                      F-113
<PAGE>   189
                                 B&B SANITATION
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
                  (DOLLARS IN THOUSANDS EXCEPT SHARE AMOUNTS)
 
NOTE B -- SUMMARY OF ACCOUNTING POLICIES (CONTINUED)
     7. Accounts Receivable
 
     The Companies consider accounts receivable to be fully collectible;
accordingly, no allowance for doubtful accounts is required. If amounts become
uncollectible, they will be charged to operations when that determination is
made.
 
     8. Interim Financial Information
 
     The unaudited interim financial statements as of March 31, 1998 and for the
three months ended March 31, 1997 and 1998 have been prepared in accordance with
generally accepted accounting principles for interim financial information.
Accordingly, they do not include all of the information and footnotes required
by generally accepted accounting principles for complete financial statements.
In the opinion of management, all adjustments (consisting of normal recurring
adjustments) considered necessary for a fair presentation have been included.
Operating results for the three months ended March 31, 1998 are not necessarily
indicative of the results that may be expected for the year ending December 31,
1998.
 
NOTE C -- PROPERTY AND EQUIPMENT
 
     At December 31, 1997, property and equipment consisted of the following:
 
<TABLE>
<S>                                                           <C>
Equipment...................................................  $2,140
Landfill....................................................      83
Modular buildings...........................................      14
                                                              ------
                                                               2,237
  Less accumulated depreciation.............................   1,385
                                                              ------
                                                                 852
Land........................................................      73
                                                              ------
                                                              $  925
                                                              ======
</TABLE>
 
NOTE D -- LONG-TERM DEBT
 
     Long-term debt consists of the following at December 31, 1997:
 
<TABLE>
<S>                                                           <C>
Note payable to bank; payable in monthly installments of
$29, including interest at prime plus 1% (9.5% at December
31, 1997) through May 2001; collateralized by equipment,
accounts receivable, land, and stock of the Companies.......  $      983
Line of credit with bank, monthly interest payments at 9.5%
with principal due May 1998; collateralized by trucks and
equipment...................................................          80
Note payable to individual; payable in monthly installments
of principal and interest at 10.06% through June 2006;
uncollateralized............................................          34
Note payable to individual; payable in monthly installments
of principal and interest at 8% through March 2001;
uncollateralized............................................          30
Note payable to individual; payable in monthly installments
of principal and interest at 9% through July 2002;
uncollateralized............................................          22
Note payable to finance company, payable in monthly
installments of principal and interest at 4.8% through May
2000; collateralized by vehicle.............................          13
                                                              ----------
                                                                   1,162
  Less current maturities...................................         364
                                                              ----------
                                                              $      798
                                                              ==========
</TABLE>
 
                                      F-114
<PAGE>   190
                                 B&B SANITATION
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
                  (DOLLARS IN THOUSANDS EXCEPT SHARE AMOUNTS)
 
NOTE D -- LONG-TERM DEBT (CONTINUED)
     Aggregate annual maturities of long-term debt for years ending December 31
are as follows:
 
<TABLE>
<S>                                                             <C>
1998........................................................    $  364
1999........................................................       312
2000........................................................       338
2001........................................................       113
2002........................................................         6
2003 and thereafter.........................................        29
                                                                ------
                                                                $1,162
                                                                ======
</TABLE>
 
     The note payable to bank contains certain covenants, the most significant
of which are restrictions on personal draws and salaries of the owners and
maintaining no less than a 125% debt service coverage ratio, as defined.
 
NOTE E -- COMMON STOCK
 
     The following is a description of the common stock for the Companies:
 
<TABLE>
<S>         <C>
B&B         $1 par value; authorized, 50,000 shares; issued and
            outstanding, 500 shares
Red Carpet  $1 par value; authorized, 1,000 shares; issued and
            outstanding, 1,000 shares
Darlin      $1 par value; authorized, 1,000 shares, issued and
            outstanding, 1,000 shares
</TABLE>
 
NOTE F -- COMMITMENTS AND CONTINGENCIES
 
     The Companies are subject to liability for any environmental damage that
its solid waste facilities may cause to neighboring landowners or residents,
particularly as a result of the contamination of soil, groundwater, or surface
water, and especially drinking water. The Companies may also be subject to
liability for any off-site environmental contamination caused by pollutants or
hazardous substances whose transportation, treatment, or disposal was performed
by the Companies. Any substantial liability for environmental damage incurred by
the Companies could have a material adverse effect on their financial condition,
results of operations, or cash flows. As of December 31, 1997, the Companies are
not aware of any such environmental liabilities.
 
     The Companies have four operating lease agreements under which the
Companies lease heavy trucks over periods ranging from 48 to 60 months. These
agreements provide for monthly lease payments over the term of the leases and
options to purchase the trucks for fair value at the end of the lease term.
Lease expense was approximately $97 for the year ended December 31, 1997. The
future minimum annual rental commitments on operating leases are as follows:
 
<TABLE>
<CAPTION>
                  YEAR ENDING DECEMBER 31
                  -----------------------
<S>                                                           <C>
         1998...............................................  $ 91
         1999...............................................    76
         2000...............................................    46
         2001...............................................     4
                                                              ----
                                                              $217
                                                              ====
</TABLE>
 
                                      F-115
<PAGE>   191
                                 B&B SANITATION
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
                  (DOLLARS IN THOUSANDS EXCEPT SHARE AMOUNTS)
 
NOTE G -- EMPLOYEE BENEFIT PLAN
 
     The Companies have a defined contribution 401(k) savings and retirement
plan in effect for all qualifying employees. General and administrative expense
includes $18 for the year ended December 31, 1997 for this plan. The Companies
match employee contributions at rates determined by management.
 
NOTE H -- SUBSEQUENT EVENT
 
     On June 5, 1998, the Companies were acquired by Waste Connections, Inc. for
approximately $4,600, including liabilities of the Companies of approximately
$1,400 which were paid off at closing.
 
NOTE I -- PRO FORMA INCOME TAX INFORMATION (UNAUDITED)
 
     Unaudited pro forma information reflects income tax expense as if the
Companies had been subject to federal and state income taxes on a combined
basis. The pro forma provisions for income taxes for the year ended December 31,
1997 and the three month period ended March 31, 1997 and 1998 differ from the
amounts computed by applying the applicable statutory federal income tax rate
(34%) to income before income taxes primarily due to state income taxes.
 
     The following is a summary of pro forma income taxes for the year ended
December 31, 1997:
 
<TABLE>
<S>                                                           <C>
Current:
  Federal...................................................  $ 85
  State.....................................................     5
Deferred:
  Federal...................................................   (11)
  State.....................................................    (1)
                                                              ----
Pro forma income taxes......................................  $ 78
                                                              ====
</TABLE>
 
     The Companies' pro forma deferred income tax assets of approximately $268
at December 31, 1997 relate principally to the use of the cash method of
accounting for income tax purposes and certain landfill closure liabilities not
recognized for tax purposes.
 
                                      F-116
<PAGE>   192
 
               REPORT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS
 
Board of Directors and Stockholders
J & J Sanitation
 
We have audited the accompanying combined balance sheet of J & J Sanitation (See
Note A 1.) as of December 31, 1997, and the related combined statements of
operations, stockholders' and partners' deficit, and cash flows for the year
then ended. These financial statements are the responsibility of J & J
Sanitation's management. Our responsibility is to express an opinion on these
financial statements based on our audit.
 
We conducted our audit in accordance with generally accepted auditing standards.
Those standards require that we plan and perform the audit to obtain reasonable
assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audit provides a reasonable basis for our opinion.
 
In our opinion, the financial statements referred to above present fairly, in
all material respects, the combined financial position of J & J Sanitation at
December 31, 1997, and the combined results of their operations and their
combined cash flows for the year then ended in conformity with generally
accepted accounting principles.
 
GRANT THORNTON LLP
 
Lincoln, Nebraska
October 7, 1998
 
                                      F-117
<PAGE>   193
 
                                J & J SANITATION
 
                            COMBINED BALANCE SHEETS
               (IN THOUSANDS, EXCEPT SHARE AND PER SHARE AMOUNTS)
 
                                     ASSETS
 
<TABLE>
<CAPTION>
                                                              DECEMBER 31,     JUNE 30,
                                                                  1997           1998
                                                              ------------    -----------
                                                                              (UNAUDITED)
<S>                                                           <C>             <C>
Current assets:
  Cash and cash equivalents.................................     $   28         $   48
  Accounts receivable, less allowance for doubtful accounts
     of $14 at December 31, 1997............................        184            220
  Prepaid expenses..........................................          9             14
                                                                 ------         ------
          Total current assets..............................        221            282
Property and equipment, net.................................      1,120          1,054
                                                                 ------         ------
                                                                 $1,341         $1,336
                                                                 ======         ======
 
                   LIABILITIES AND STOCKHOLDERS' AND PARTNERS' DEFICIT
Current liabilities:
  Accounts payable..........................................     $   96         $  154
  Deferred revenue..........................................         28             14
  Accrued liabilities.......................................         53             54
  Note payable..............................................         --              9
  Current portion of long-term debt.........................         67             60
  Current portion of capital lease obligations..............        129            112
                                                                 ------         ------
          Total current liabilities.........................        373            403
Long-term debt, net of current portion......................        616            647
Capital lease obligations, net of current portion...........        372            323
Commitments and contingencies (Note D)
Stockholders' and partners' deficit:
  J & J Sanitation Inc. -- common stock: $10 par value;
     1,000 shares authorized, issued and outstanding........         10             10
  Big Red Roll Off Inc. -- common stock: $10 par value;
     1,000 shares authorized, issued and outstanding........         10             10
  Paid in capital...........................................         77             77
  Accumulated deficit.......................................        (40)           (62)
  Partners' deficit -- J & J Sanitation of South Dakota.....        (77)           (72)
                                                                 ------         ------
          Total stockholders' and partners' deficit.........        (20)           (37)
                                                                 ------         ------
                                                                 $1,341         $1,336
                                                                 ======         ======
</TABLE>
 
        The accompanying notes are an integral part of these statements.
                                      F-118
<PAGE>   194
 
                                J & J SANITATION
 
                       COMBINED STATEMENTS OF OPERATIONS
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                               SIX MONTHS
                                                                                  ENDED
                                                               YEAR ENDED       JUNE 30,
                                                              DECEMBER 31,   ---------------
                                                                  1997        1997     1998
                                                              ------------   ------   ------
                                                                               (UNAUDITED)
<S>                                                           <C>            <C>      <C>
Revenues....................................................     $2,346      $1,162   $1,210
Operating expenses:
  Cost of operations........................................      1,789         884      854
  Selling, general and administrative.......................        319         135      213
  Depreciation and amortization.............................        197         101      107
                                                                 ------      ------   ------
                                                                  2,305       1,120    1,174
                                                                 ------      ------   ------
     Income from operations.................................         41          42       36
Interest expense............................................        108          55       53
                                                                 ------      ------   ------
     Loss before income taxes...............................        (67)        (13)     (17)
Income tax benefit..........................................         --          --       --
                                                                 ------      ------   ------
     NET LOSS...............................................     $  (67)     $  (13)  $  (17)
                                                                 ======      ======   ======
Pro forma income tax benefit (unaudited) (Note E)...........     $   --      $   --   $   --
                                                                 ======      ======   ======
Pro forma net loss (unaudited) (Note E).....................     $  (67)     $  (13)  $  (17)
                                                                 ======      ======   ======
</TABLE>
 
        The accompanying notes are an integral part of these statements.
                                      F-119
<PAGE>   195
 
                                J & J SANITATION
 
            COMBINED STATEMENT OF STOCKHOLDERS' AND PARTNERS' EQUITY
 
      YEAR ENDED DECEMBER 31, 1997 AND THE SIX MONTHS ENDED JUNE 30, 1998
    (INFORMATION RELATED TO THE SIX MONTHS ENDED JUNE 30, 1998 IS UNAUDITED)
                      (IN THOUSANDS, EXCEPT SHARE AMOUNTS)
 
<TABLE>
<CAPTION>
                                                                                                               TOTAL
                                       J & J             BIG RED                                           STOCKHOLDERS'
                                 SANITATION, INC.     ROLL OFF INC.                                             AND
                                   COMMON STOCK       COMMON STOCK                             PARTNERS'     PARTNERS'
                                 -----------------   ---------------   PAID-IN   ACCUMULATED    EQUITY        EQUITY
                                 SHARES    AMOUNT    SHARES   AMOUNT   CAPITAL     DEFICIT     (DEFICIT)     (DEFICIT)
                                 -------   -------   ------   ------   -------   -----------   ---------   -------------
<S>                              <C>       <C>       <C>      <C>      <C>       <C>           <C>         <C>
Balance at January 1, 1997.....      --      $--        --     $--       $--        $ --         $ 11          $ 11
Issuance of common stock.......      --       --     1,000      10        15          --           --            25
Exchange of partners' equity
  for common stock.............   1,000       10        --      --        46          --          (56)           --
Net loss.......................      --       --        --      --        --         (40)         (27)          (67)
Partners' drawings.............      --       --        --      --        --          --           (5)           (5)
Contributions from
  stockholders.................      --       --        --      --        16          --           --            16
                                  -----      ---     -----     ---       ---        ----         ----          ----
Balance at December 31, 1997...   1,000       10     1,000      10        77         (40)         (77)          (20)
Net income (loss)..............      --       --        --      --        --         (22)           5           (17)
                                  -----      ---     -----     ---       ---        ----         ----          ----
Balance at June 30, 1998.......   1,000      $10     1,000     $10       $77        $(62)        $(72)         $(37)
                                  =====      ===     =====     ===       ===        ====         ====          ====
</TABLE>
 
         The accompanying notes are an integral part of this statement.
                                      F-120
<PAGE>   196
 
                                J & J SANITATION
 
                       COMBINED STATEMENTS OF CASH FLOWS
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                               SIX MONTHS
                                                                                  ENDED
                                                               YEAR ENDED       JUNE 30,
                                                              DECEMBER 31,    -------------
                                                                  1997        1997     1998
                                                              ------------    -----    ----
                                                                               (UNAUDITED)
<S>                                                           <C>             <C>      <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
  Net loss..................................................     $ (67)       $ (13)   $(17)
  Adjustments to reconcile net loss to net cash provided by
     operating activities:
     Depreciation and amortization..........................       197          101     107
     Changes in operating assets and liabilities:
     Accounts receivable, net...............................        (6)         (17)    (36)
     Prepaid expenses.......................................        (3)         (10)     (5)
     Accounts payable.......................................        16           85      58
     Deferred revenue.......................................         4          (12)    (14)
     Accrued liabilities....................................        15            2       1
                                                                 -----        -----    ----
          Net cash provided by operating activities.........       156          136      94
                                                                 -----        -----    ----
CASH FLOWS FROM INVESTING ACTIVITIES:
  Capital expenditures for property and equipment...........      (138)          (4)    (53)
                                                                 -----        -----    ----
CASH FLOWS FROM FINANCING ACTIVITIES:
  Proceeds from long-term debt and notes payable............       635           --      76
  Principal payments on long-term debt and capital lease
     obligations............................................      (694)        (142)    (97)
  Issuance of common stock..................................        25           25      --
  Contributions from stockholders...........................        16           --      --
  Partners' drawings........................................        (5)          --      --
                                                                 -----        -----    ----
          Net cash used in financing activities.............       (23)        (117)    (21)
                                                                 -----        -----    ----
Net change in cash and cash equivalents.....................        (5)          15      20
Cash and cash equivalents:
  Beginning of period.......................................        33           33      28
                                                                 -----        -----    ----
  End of period.............................................     $  28        $  48    $ 48
                                                                 =====        =====    ====
SUPPLEMENTARY DISCLOSURES OF CASH FLOW INFORMATION AND
  NON-CASH TRANSACTIONS:
  Cash paid for interest....................................     $ 108        $  55    $ 53
  Capital lease obligations incurred for the purchase of
     property and equipment.................................        88           88      --
  Partners' equity exchanged for J & J Sanitation Inc.
     common stock...........................................        56           56      --
</TABLE>
 
        The accompanying notes are an integral part of these statements.
                                      F-121
<PAGE>   197
 
                                J & J SANITATION
 
                     NOTES TO COMBINED FINANCIAL STATEMENTS
                               DECEMBER 31, 1997
               (INFORMATION RELATING TO JUNE 30, 1998 AND THE SIX
               MONTHS ENDED JUNE 30, 1997 AND 1998 IS UNAUDITED)
                             (DOLLARS IN THOUSANDS)
 
NOTE A -- ORGANIZATION, BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
  1. Basis of Presentation and Organization and Business
 
     The combined financial statements include the accounts of J & J Sanitation
Inc., Big Red Roll Off Inc. and J & J Sanitation of South Dakota (a
partnership), collectively referred to as "J & J Sanitation". These entities are
under common control. All material intercompany accounts and transactions have
been eliminated.
 
     J & J Sanitation is a non-hazardous solid waste services company that
provides collection, hauling, disposal and recycling services to residential and
commercial customers in various counties of Nebraska and South Dakota.
 
     J & J Sanitation derives a portion of its revenue from exclusive municipal
contracts, of which a significant number will be subject to competitive bidding
at some time in the future. J & J Sanitation intends to bid on additional
municipal contracts as a means of adding customers. There can be no assurance
that J & J Sanitation will be the successful bidder to obtain or retain
contracts that come up for competitive bidding.
 
  2. Sale of J & J Sanitation
 
     On July 31, 1998, all capital stock and partnership net assets of J & J
Sanitation were sold to Waste Connections, Inc. ("WCI") for cash and common
stock of WCI.
 
  3. Interim Financial Information
 
     The unaudited interim financial statements as of June 30, 1998 and for the
six months ended June 30, 1997 and 1998 have been prepared in accordance with
generally accepted accounting principles for interim financial information.
Accordingly, they do not include all of the information and footnotes required
by generally accepted accounting principles for complete financial statements.
In the opinion of management, all adjustments (consisting of normal recurring
adjustments) considered necessary for a fair presentation have been included.
Operating results for the six months ended June 30, 1998 are not necessarily
indicative of the results that may be expected for the year ending December 31,
1998.
 
  4. Use of Estimates
 
     The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the amounts reported in the financial statements and
accompanying notes. Actual results could differ from those estimates.
 
  5. Cash Equivalents
 
     J & J Sanitation considers all highly liquid investments with a maturity of
three months or less when purchased to be cash equivalents.
 
  6. Concentrations of Credit Risk
 
     Financial instruments that potentially subject J & J Sanitation to
concentrations of credit risk consist primarily of accounts receivable. Credit
risk on accounts receivable is minimized as a result of the large and diverse
nature of J & J Sanitation's customer base. Credit losses have been within
management's expectations.
 
                                      F-122
<PAGE>   198
                                J & J SANITATION
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
               (INFORMATION RELATING TO JUNE 30, 1998 AND THE SIX
               MONTHS ENDED JUNE 30, 1997 AND 1998 IS UNAUDITED)
                             (DOLLARS IN THOUSANDS)
 
NOTE A -- ORGANIZATION, BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
(CONTINUED)
  7. Property and Equipment
 
     Property and equipment are stated at cost. Improvements or betterments
which significantly extend the life of an asset are capitalized. Expenditures
for maintenance and repair costs are charged to operations as incurred. The cost
of assets retired or otherwise disposed of and the related accumulated
depreciation are eliminated from the accounts in the year of disposal. Gains and
losses resulting from property disposals are included in other income or
expense. Depreciation is computed using the straight-line method over the
estimated useful lives of the assets, or lease term, whichever is shorter.
 
     The estimated useful lives of property and equipment are as follows:
 
<TABLE>
<S>                                                       <C>
Machinery and equipment.................................  3 - 10 years
Rolling stock...........................................  5 - 10 years
Containers..............................................  5 - 12 years
</TABLE>
 
  8. Revenue Recognition
 
     J & J Sanitation recognizes revenues as services are provided. Certain
customers are billed in advance and, accordingly, recognition of the related
revenues is deferred until the services are provided.
 
  9. Income Taxes
 
     Big Red Roll Off Inc. uses the liability method to account for income
taxes. Under this method, deferred tax assets and liabilities are determined
based on differences between the financial reporting and tax bases of assets and
liabilities and are measured using the enacted tax rates and laws that will be
in effect when the differences are expected to reverse.
 
     J & J Sanitation Inc. operates under Subchapter "S" of the Internal Revenue
Code and J & J Sanitation of South Dakota operates as a partnership for federal
and state income tax reporting purposes. Consequently, all of the income tax
attributes and liabilities from the operations of J & J Sanitation Inc. and
J & J Sanitation of South Dakota flow through to the individual shareholders or
partners.
 
  10. Fair Value of Financial Instruments
 
     The carrying values of the long-term debt (Note C) and capital lease
obligations (Note D) approximate their fair values as of December 31, 1997 based
on current incremental borrowing rates for similar types of borrowing
arrangements.
 
  11. Significant Customer
 
     The Company has one major customer which represents 11% of total revenues
for the year ended December 31, 1997.
 
                                      F-123
<PAGE>   199
                                J & J SANITATION
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
               (INFORMATION RELATING TO JUNE 30, 1998 AND THE SIX
               MONTHS ENDED JUNE 30, 1997 AND 1998 IS UNAUDITED)
                             (DOLLARS IN THOUSANDS)
 
NOTE B -- PROPERTY AND EQUIPMENT
 
     Property and equipment consists of the following:
 
<TABLE>
<CAPTION>
                                                      DECEMBER 31,     JUNE 30,
                                                          1997           1998
                                                      ------------    -----------
                                                                      (UNAUDITED)
<S>                                                   <C>             <C>
Rolling stock.......................................     $1,107         $1,074
Containers..........................................        287            287
Other...............................................        161            214
                                                         ------         ------
                                                          1,555          1,575
Less accumulated depreciation and amortization......        435            521
                                                         ------         ------
                                                         $1,120         $1,054
                                                         ======         ======
</TABLE>
 
NOTE C -- FINANCING ARRANGEMENTS
 
<TABLE>
<CAPTION>
                                                      DECEMBER 31,     JUNE 30,
                                                          1997           1998
                                                      ------------    -----------
                                                                      (UNAUDITED)
<S>                                                   <C>             <C>
Notes payable to banks bearing interest at fixed and
  variable rates ranging from 7.9% to 10% at
  December 31, 1997, payable in monthly installments
  of principal and interest; maturing through
  January 2008......................................      $683           $707
Less current portion................................        67             60
                                                          ----           ----
Long-term debt, net of current portion..............      $616           $647
                                                          ====           ====
</TABLE>
 
     At the end of 1997, J & J Sanitation entered into a new credit arrangement
with a bank which included a $60 line of credit maturing December 31, 1998 and a
term note for $625 maturing January 2008. Borrowings bear interest at a variable
rate based on the bank's index rate less 1.75% to 1.80%. The initial rates of
the line of credit and term note were 10% and 9.95%, respectively. The term note
was used for refinancing certain notes payable to banks, equipment purchases and
general operating purposes. At December 31, 1997, no amounts were outstanding on
the line of credit.
 
     The notes payable to banks and the line of credit are collateralized by
substantially all of J & J Sanitation's assets. J & J Sanitation is subject to
certain restrictive covenants with its primary lender, which among other things,
limit the incurring of additional indebtedness without the lender's written
approval.
 
     Subsequent to December 31, 1997, aggregate contractual future principal
payments by year are $67 in 1998, $63 in 1999, $49 in 2000, $54 in 2001, $57 in
2002 and $393 thereafter.
 
     In conjunction with the acquisition of J & J Sanitation by WCI on July 31,
1998, all of the outstanding long-term debt of J & J Sanitation was repaid.
 
NOTE D -- COMMITMENTS AND CONTINGENCIES
 
COMMITMENTS
 
  Leases
 
     J & J Sanitation leases certain rolling stock under long-term leases
expiring through 2002 which have been capitalized. The related assets and
obligations have been recorded using J & J Sanitation's implicit
 
                                      F-124
<PAGE>   200
                                J & J SANITATION
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
               (INFORMATION RELATING TO JUNE 30, 1998 AND THE SIX
               MONTHS ENDED JUNE 30, 1997 AND 1998 IS UNAUDITED)
                             (DOLLARS IN THOUSANDS)
 
NOTE D -- COMMITMENTS AND CONTINGENCIES (CONTINUED)
borrowing rate at the inception of the leases. At the expirations of such
leases, J & J Sanitation has the option to purchase the rolling stock at an
agreed-upon residual value.
 
     The following amounts are included in property and equipment as rolling
stock under capital leases:
 
<TABLE>
<CAPTION>
                                                      DECEMBER 31,     JUNE 30,
                                                          1997           1998
                                                      ------------    -----------
                                                                      (UNAUDITED)
<S>                                                   <C>             <C>
Rolling stock.......................................      $690           $657
Less accumulated amortization.......................       200            236
                                                          ----           ----
                                                          $490           $421
                                                          ====           ====
</TABLE>
 
     The following is a schedule by years of future minimum lease payments under
capital leases together with the present value of the net minimum lease payments
as of December 31, 1997:
 
<TABLE>
<S>                                                           <C>
1998........................................................  $171
1999........................................................   131
2000........................................................   148
2001........................................................   133
2002........................................................    18
                                                              ----
Total minimum lease payments................................   601
Less amount representing interest...........................   100
                                                              ----
                                                              $501
                                                              ====
Current portion.............................................  $129
Long-term portion...........................................   372
                                                              ----
                                                              $501
                                                              ====
</TABLE>
 
     J & J Sanitation also leases certain facilities and other equipment under
operating leases expiring through 1999. Minimum rental payments under such
operating leases in 1998, 1999 and in the aggregate are $5, $2 and $7,
respectively. J & J Sanitation recognized rent expense under these operating
leases totaling $39 in 1997.
 
     In conjunction with the acquisition of J & J Sanitation by WCI on July 31,
1998, the rolling stock under capital leases was acquired at values
approximating the capital lease obligation at that date and the related leases
were terminated.
 
CONTINGENCIES
 
  Legal Proceedings
 
     In the normal course of its business and as a result of the extensive
governmental regulation of the solid waste industry, J & J Sanitation may
periodically become subject to various judicial and administrative proceedings
involving federal, state or local agencies. In these proceedings, an agency may
seek to impose fines on J & J Sanitation or to revoke or deny renewal of an
operating permit held by J & J Sanitation. From time to time J & J Sanitation
may also be subject to actions brought by citizens' groups or adjacent
landowners in connection with the permitting and licensing of landfills and
transfer stations, or alleging environmental damage or violations of the permits
and licenses pursuant to which J & J Sanitation operates.
 
                                      F-125
<PAGE>   201
                                J & J SANITATION
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
               (INFORMATION RELATING TO JUNE 30, 1998 AND THE SIX
               MONTHS ENDED JUNE 30, 1997 AND 1998 IS UNAUDITED)
                             (DOLLARS IN THOUSANDS)
 
NOTE D -- COMMITMENTS AND CONTINGENCIES (CONTINUED)
     In addition, J & J Sanitation may become party to various claims and suits
pending for alleged damages to persons and property, alleged violations of
certain laws and alleged liabilities arising out of matters occurring during the
normal operation of the waste management business. As of December 31, 1997,
there is no current proceeding or litigation involving J & J Sanitation that
management believes will have a material adverse impact on J & J Sanitation's
business, financial condition, results of operations or cash flows.
 
NOTE E -- INCOME TAXES
 
     Unaudited pro forma information reflects income taxes as if all of J & J
Sanitation had been subject to federal and state income taxes.
 
     The income tax benefit and unaudited pro forma income tax benefit for the
year ended December 31, 1997 differs from the amounts computed by applying the
applicable statutory federal income tax rate (34%) to loss before income taxes
as follows:
 
<TABLE>
<CAPTION>
                                                                        PRO FORMA
                                                          INCOME TAX   INCOME TAX
                                                           BENEFIT       BENEFIT
                                                          ----------   -----------
                                                                       (UNAUDITED)
<S>                                                       <C>          <C>
Income tax benefit at the statutory rate................     34.0%         34.0%
Income taxed at shareholder level.......................    (34.0)           --
Valuation allowance.....................................       --         (34.0)
                                                            -----         -----
                                                               --%           --%
                                                            =====         =====
</TABLE>
 
     Unaudited pro forma deferred income tax assets at December 31, 1997 are
fully offset by a valuation allowance as there is no assurance the deferred tax
assets would be realized. Unaudited pro forma deferred tax assets arise
principally from the loss in the current year, differences between tax and
financial methods of reporting depreciation expense, and the use of the cash
method of accounting for income tax purposes which gives rise to differences
between financial statement and tax return recognition of receivables, prepaid
expenses, accounts payable and accrued liabilities.
 
NOTE F -- RELATED PARTY TRANSACTIONS
 
     Great Plains Recycling Inc. (GPR) has an arrangement with J & J Sanitation
to perform solid waste processing, recyclable recovery, transfer and disposal
services. J & J Sanitation's stockholders and partners are majority owners of
GPR. Cost of operations in the combined statement of operations for 1997
includes a charge of $672 for these services. At December 31, 1997, J & J
Sanitation owes GPR $84 which is included in accounts payable.
 
     In conjunction with the acquisition of J & J Sanitation by WCI on July 31,
1998, WCI entered into a long-term agreement with GPR to provide comparable
services. WCI also has the option to acquire GPR effective November 1999
provided GPR achieves defined levels of profitability.
 
                                      F-126
<PAGE>   202
 
                         REPORT OF INDEPENDENT AUDITORS
 
Board of Directors and Stockholders
Amador Disposal Services, Inc. and
  Mother Lode Sani-Hut, Inc.
 
     In our opinion, the accompanying combined balance sheet and the related
combined statements of operations and retained earnings and of cash flows
present fairly, in all material respects, the combined financial position of
Amador Disposal Services, Inc. and Mother Lode Sani-Hut, Inc. (collectively, the
Companies) at June 30, 1998, and the combined results of their operations and
their cash flows for the year then ended, in conformity with generally accepted
accounting principles. These financial statements are the responsibility of the
Companies' management; our responsibility is to express an opinion on these
financial statements based on our audit. We conducted our audit of these
statements in accordance with generally accepted auditing standards, which
require that we plan and perform the audit to obtain reasonable assurance about
whether the financial statements are free of material misstatement. An audit
includes examining, on a test basis, evidence supporting the amounts and
disclosures in the financial statements, assessing the accounting principles
used and significant estimates made by management, and evaluating the overall
financial statement presentation. We believe that our audit provides a
reasonable basis for the opinion expressed above.
 
/s/ PricewaterhouseCoopers LLP
 
Sacramento, California
December 30, 1998
 
                                      F-127
<PAGE>   203
 
         AMADOR DISPOSAL SERVICES, INC. AND MOTHER LODE SANI-HUT, INC.
 
                            COMBINED BALANCE SHEETS
 
                                     ASSETS
 
<TABLE>
<CAPTION>
                                                               JUNE 30,     SEPTEMBER 30,
                                                                 1998           1998
                                                              ----------    -------------
                                                                             (UNAUDITED)
<S>                                                           <C>           <C>
Current assets:
  Cash and cash equivalents.................................  $  162,963     $  239,048
  Trade accounts receivable, net............................     183,369        190,386
  Prepaid expenses and other current assets.................      17,680         76,202
                                                              ----------     ----------
          Total current assets..............................     364,012        505,636
Property, plant and equipment, net..........................   2,174,042      2,106,705
Other assets................................................      30,000         30,000
                                                              ----------     ----------
          Total assets......................................  $2,568,054     $2,642,341
                                                              ==========     ==========
 
                          LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
  Current portion of long-term debt.........................      42,631         38,055
  Accounts payable..........................................      95,249         86,984
  Accrued liabilities.......................................     100,251        144,640
                                                              ----------     ----------
          Total current liabilities.........................     238,131        269,679
Long-term debt, net.........................................   1,164,720      1,157,766
                                                              ----------     ----------
          Total liabilities.................................   1,402,851      1,427,445
                                                              ----------     ----------
Commitments and contingencies (Note 5)
Stockholders' equity:
  Common stock, no par value; 2,500 shares authorized,
     issued and outstanding.................................     181,000        181,000
  Common stock, $100 par value; 5,000 shares authorized, 75
     shares issued and outstanding..........................       7,500          7,500
  Additional paid-in capital................................     118,430        118,430
  Retained earnings.........................................     858,273        907,966
                                                              ----------     ----------
          Total stockholders' equity........................   1,165,203      1,214,896
                                                              ----------     ----------
          Total liabilities and stockholders' equity........  $2,568,054     $2,642,341
                                                              ==========     ==========
</TABLE>
 
    The accompanying notes are an integral part of the financial statements.
                                      F-128
<PAGE>   204
 
         AMADOR DISPOSAL SERVICES, INC. AND MOTHER LODE SANI-HUT, INC.
 
            COMBINED STATEMENTS OF OPERATIONS AND RETAINED EARNINGS
 
<TABLE>
<CAPTION>
                                                                          THREE MONTHS ENDED
                                                          YEAR ENDED        SEPTEMBER 30,
                                                           JUNE 30,     ----------------------
                                                             1998          1997         1998
                                                          ----------    ----------    --------
                                                                             (UNAUDITED)
<S>                                                       <C>           <C>           <C>
REVENUES................................................  $2,996,013    $  758,169    $845,601
OPERATING EXPENSES:
  Cost of operations....................................   2,123,800       532,296     563,277
  General and administrative............................     507,256       110,777     129,165
  Depreciation and amortization.........................     311,731        70,562      73,656
                                                          ----------    ----------    --------
          Income from operations........................      53,226        44,534      79,503
OTHER INCOME AND EXPENSE:
  Interest expense......................................    (115,702)      (25,929)    (29,220)
  Other (expense) income, net...........................     (18,810)          721       1,010
                                                          ----------    ----------    --------
          (Loss) income before income taxes.............     (81,286)       19,326      51,293
Income tax provision....................................       1,600         1,600       1,600
                                                          ----------    ----------    --------
          Net (loss) income.............................     (82,886)       17,726      49,693
Balance of retained earnings, beginning of period.......     991,159       989,823     858,273
  Dividends paid........................................     (50,000)           --          --
                                                          ----------    ----------    --------
Balance of retained earnings, end of period.............  $  858,273    $1,007,549    $907,966
                                                          ==========    ==========    ========
Pro forma income tax (benefit) provision (unaudited)
  (Note 6)..............................................  $  (19,224)   $    4,059    $ 10,901
                                                          ==========    ==========    ========
Pro forma net (loss) income (unaudited) (Note 6)........  $  (62,062)   $   15,267    $ 40,392
                                                          ==========    ==========    ========
</TABLE>
 
    The accompanying notes are an integral part of the financial statements.
                                      F-129
<PAGE>   205
 
         AMADOR DISPOSAL SERVICES, INC. AND MOTHER LODE SANI-HUT, INC.
 
                       COMBINED STATEMENTS OF CASH FLOWS
 
<TABLE>
<CAPTION>
                                                                          THREE MONTHS ENDED
                                                           YEAR ENDED        SEPTEMBER 30,
                                                            JUNE 30,     ---------------------
                                                              1998         1997         1998
                                                           ----------    ---------    --------
                                                                              (UNAUDITED)
<S>                                                        <C>           <C>          <C>
CASH FLOW FROM OPERATING ACTIVITIES:
  Net (loss) income......................................  $ (82,886)    $  17,726    $ 49,693
  Adjustments to reconcile net (loss) income to cash
     provided by operating activities:
     Depreciation and amortization.......................    311,731        70,562      73,656
     Loss (gain) on disposals of property and
       equipment.........................................     21,152           204        (159)
     Cash provided by or (used in) changes in operating
       assets and liabilities, net:
       Accounts receivable...............................    (21,226)        2,323      (7,018)
       Prepaid expenses..................................      7,597       (54,963)    (58,520)
       Other assets......................................         --         8,367          --
       Accounts payable..................................      8,671        13,030      (8,265)
       Accrued liabilities...............................     (1,283)       29,807      44,389
                                                           ---------     ---------    --------
          Net cash provided by operating activities......    243,756        87,056      93,776
                                                           ---------     ---------    --------
CASH FLOWS FROM INVESTING ACTIVITIES:
  Acquisitions of property and equipment.................   (306,658)     (256,727)     (9,160)
  Proceeds from the sale of equipment....................      1,180           700       3,000
                                                           ---------     ---------    --------
          Net cash used in investing activities..........   (305,478)     (256,027)     (6,160)
                                                           ---------     ---------    --------
CASH FLOWS FROM FINANCING ACTIVITIES:
  Proceeds from long-term debt...........................    258,000       258,000          --
  Principal payments on long-term debt...................    (67,893)      (14,640)    (11,531)
  Dividends paid.........................................    (50,000)           --          --
                                                           ---------     ---------    --------
          Net cash provided by (used in) financing
            activities...................................    140,107       243,360     (11,531)
                                                           ---------     ---------    --------
          Net increase in cash balance...................     78,385        74,389      76,085
Cash and cash equivalents at beginning of period.........     84,578        84,578     162,963
                                                           ---------     ---------    --------
Cash and cash equivalents at end of period...............  $ 162,963     $ 158,967    $239,048
                                                           =========     =========    ========
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
  Cash paid for interest.................................  $ 115,136     $  26,042    $ 29,220
                                                           =========     =========    ========
  Cash paid for income taxes.............................  $   2,412     $     683    $    400
                                                           =========     =========    ========
</TABLE>
 
    The accompanying notes are an integral part of the financial statements.
                                      F-130
<PAGE>   206
 
         AMADOR DISPOSAL SERVICES, INC. AND MOTHER LODE SANI-HUT, INC.
 
                     NOTES TO COMBINED FINANCIAL STATEMENTS
 
1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES:
 
BASIS OF COMBINATION
 
     The combined financial statements include the accounts of Amador Disposal
Services, Inc. (Amador Disposal) and Mother Lode Sani-Hut, Inc. (Mother Lode)
(and collectively, the Companies). Amador Disposal and Mother Lode have common
management which exercise significant influence over their operations. All
material intercompany balances and transactions have been eliminated in
combination.
 
BUSINESS AND ORGANIZATION
 
     The Companies, both California corporations, are regional, integrated,
non-hazardous solid waste services companies that provide containers,
collection, transfer, disposal, recycling and landfill services to commercial
and residential customers in Northern California.
 
INTERIM FINANCIAL INFORMATION (UNAUDITED)
 
     The interim combined financial statements as of September 30, 1998 and for
the three month periods ended September 30, 1997 and 1998 have been prepared in
accordance with generally accepted accounting principles for interim financial
information. Accordingly, they do not include all of the information and
footnotes required by generally accepted accounting principles for complete
financial statements. In the opinion of management, all adjustments (consisting
of normal recurring adjustments) considered necessary for a fair presentation
have been included. Operating results for the three months ended September 30,
1998 are not necessarily indicative of the results that may be expected for the
year ending June 30, 1999.
 
CASH AND CASH EQUIVALENTS
 
     The Companies consider all highly liquid investments with maturities of 3
months or less when purchased to be cash equivalents for purposes of the
combined statements of cash flows.
 
PROPERTY, PLANT AND EQUIPMENT
 
     Property, plant and equipment are stated at cost. Improvements or
betterments which significantly extend the life of the assets are capitalized.
Interest costs are also capitalized on self-constructed assets. Expenditures for
maintenance and repairs are charged against operations as incurred. The cost of
assets retired or otherwise disposed of and the related accumulated depreciation
are eliminated from the accounts in the year of disposal. Gains or losses
resulting from property disposal are included in other income (expense).
Depreciation is computed using the straight-line method over the following
estimated useful lives of the assets:
 
<TABLE>
<S>                                                        <C>
Building.................................................    30 years
Containers, machinery and equipment......................  3-10 years
Rolling stock and vehicles...............................   5-7 years
</TABLE>
 
                                      F-131
<PAGE>   207
         AMADOR DISPOSAL SERVICES, INC. AND MOTHER LODE SANI-HUT, INC.
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
 
REVENUE RECOGNITION
 
     Revenues are recognized as services are provided.
 
INCOME TAXES
 
     The Companies have elected to be taxed under the provisions of Subchapter S
of the Internal Revenue Code for federal and California state income tax
purposes. Under S corporation status, the Companies' income is taxable to the
stockholders, with only minimal state income taxes charged to the Companies.
 
CLOSURE AND POST-CLOSURE COSTS
 
     Pursuant to a contract with Amador County to operate the Amador County
Solid Waste Sanitary Landfill (Landfill), Amador Disposal is responsible to
provide specified levels of cover on designated cells on the Landfill in the
normal course of operations; however, the Companies are not responsible for
closure and post-closure activities. The responsibility for closure and
post-closure liabilities is that of Amador County. Consequently, the management
does not believe the Companies have any material financial obligation for
closure and post-closure costs for the Landfill.
 
FAIR VALUE OF FINANCIAL INSTRUMENTS
 
     The carrying value of cash and cash equivalents approximates fair value
because of the short-term maturity of these instruments. The carrying values of
the notes payable approximate their fair values as of June 30, 1998, and
September 30, 1997 and 1998, based on current incremental borrowing rates for
similar types of borrowing arrangements.
 
USE OF ESTIMATES
 
     The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the amounts reported in the financial statements and
accompanying notes. Actual results could differ from those estimates.
 
CONCENTRATIONS OF CREDIT RISK
 
     Financial instruments that potentially subject the Companies to
concentrations of credit risks consist primarily of accounts receivable. Credit
risk on accounts receivable is minimized as the Companies' customer base
consists largely of numerous customers with small individual balances. The
Companies maintain allowances for losses based on the expected collectibility of
accounts receivable. Credit losses have been within management's expectations.
 
The Companies operate under various franchise agreements with local
municipalities. Approximately $1,693,000 or 56% of revenues for the year ended
June 30, 1998, was earned from customers in municipalities covered by five
franchise agreements, which expire from 1998 through 2022, inclusive of options
to extend. One of the five franchise agreements was not renewed upon its
expiration on June 30, 1998. For the year ended June 30, 1998, revenue earned
under this franchise agreement was approximately $425,000.
 
                                      F-132
<PAGE>   208
         AMADOR DISPOSAL SERVICES, INC. AND MOTHER LODE SANI-HUT, INC.
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
 
2. TRADE ACCOUNTS RECEIVABLE:
 
Trade accounts receivable is presented net of an allowance for doubtful accounts
of approximately $15,000 each at June 30, 1998, and September 30, 1997 and 1998.
 
3. PROPERTY, PLANT AND EQUIPMENT:
 
<TABLE>
<CAPTION>
                                                     JUNE 30,      SEPTEMBER 30,
                                                       1998            1998
                                                    -----------    -------------
                                                                    (UNAUDITED)
<S>                                                 <C>            <C>
Land and buildings................................  $ 1,268,548     $ 1,271,910
Containers, machinery and equipment...............      652,069         652,069
Rolling stock and vehicles........................    1,760,102       1,735,761
                                                    -----------     -----------
                                                      3,680,719       3,659,740
Less accumulated depreciation.....................   (1,506,677)     (1,553,035)
                                                    -----------     -----------
                                                    $ 2,174,042     $ 2,106,705
                                                    ===========     ===========
</TABLE>
 
4. LONG-TERM DEBT:
 
Long-term debt as of June 30 and September 30, 1998, consists of the following:
 
<TABLE>
<CAPTION>
                                                              JUNE 30,     SEPTEMBER 30,
                                                                1998           1998
                                                             ----------    -------------
                                                                            (UNAUDITED)
<S>                                                          <C>           <C>
Notes payable to individuals, interest at prime plus 1.5%
  (10% at June 30, 1998 and September 30, 1998), payable in
  monthly installments, principal due September 2001,
  guaranteed by the stockholders of Amador Disposal........  $  950,000     $  950,000
Notes payable to individuals, interest at prime (8% at June
  30, 1998 and September 30, 1998), payable in monthly
  installments of principal and interest of $2,208 through
  September 2007, collateralized by a deed of trust on
  certain real property....................................  $  172,804     $  169,614
Note payable, interest at prime plus 2% (10.5% at June 30,
  1998 and September 30, 1998), payable in monthly
  installments of principal and interest of $655 through
  April 1999, collateralized by certain equipment..........  $    6,106     $    4,285
Note payable, interest at 10.5%, payable in monthly
  installments of principal and interest of $560 through
  October 2002, collateralized by certain equipment........  $   23,306     $   22,229
Contract payable, interest at 10.5%, payable in monthly
  installments of principal and interest of $1,078 through
  October 2002, collateralized by certain equipment........  $   44,873     $   42,797
Contract payable, interest at prime plus 2% (10.25% at June
  30, 1998 and September 1998), payable in monthly
  installments of principal and interest of $1,200 through
  March 1999, collateralized by certain equipment..........      10,262          6,896
                                                             ----------     ----------
                                                              1,207,351      1,195,821
Less current portion                                             42,631         38,055
                                                             ----------     ----------
Total long-term debt                                         $1,164,720     $1,157,766
                                                             ==========     ==========
</TABLE>
 
                                      F-133
<PAGE>   209
         AMADOR DISPOSAL SERVICES, INC. AND MOTHER LODE SANI-HUT, INC.
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
 
Maturities of long-term debt are as follows:
 
<TABLE>
<CAPTION>
                       YEAR ENDING                           AMOUNT
                       -----------                         ----------
<S>                                                        <C>
  1999...................................................  $   42,631
  2000...................................................      28,799
  2001...................................................     981,585
  2002...................................................      34,647
  2003...................................................      24,485
  Thereafter.............................................      95,204
                                                           ----------
                                                           $1,207,351
                                                           ==========
</TABLE>
 
5. COMMITMENTS AND CONTINGENCIES
 
COMMITMENTS
 
  Franchise Agreements, Contracts and Permits
 
The Companies have various franchise agreements with the counties and cities
that they serve. These franchise agreements typically require a franchise fee of
two to five percent of gross annual revenues earned in that jurisdiction, or a
fee per collection truck operated in that jurisdiction during the year, to be
paid to the municipality. These franchise agreements expire between April 2000
and October 2022, inclusive of options to extend.
 
The Companies also have contracts to operate the Landfill and a Materials
Recovery Facility (Facility) at the Landfill, expiring July 2002 and March 2016,
respectively, with an option to extend for the Facility. The disposal fee at the
Landfill and the related surcharge fees vary with the type of refuse. Surcharge
fees collected as a part of the landfill revenue are payable to Amador County.
The landfill rate schedule for the Facility is determined by Amador County
annually.
 
CONTINGENCIES
 
  Environmental Risks
 
     The Companies may be subject to liability for any environmental damage that
their solid waste facilities may cause to neighboring landowners or residents,
particularly as a result of the contamination of soil, groundwater or surface
water, and especially drinking water, including damage resulting from conditions
existing prior to the acquisition of such land and facilities by the Companies.
The Companies may also be subject to liability for any off-site environmental
contamination cause by pollutants or hazardous substance whose transportation,
treatment or disposal was arranged by the Companies. Any substantial liability
for environmental damage incurred by the Companies could have a material adverse
effect on the Companies' combined financial condition, results of operations or
cash flows. As of June 30, 1998 and September 30, 1998, the Companies are not
aware of any such environmental liabilities.
 
  Legal Proceedings
 
     In the normal course of their business and as a result of the extensive
governmental regulations of the solid waste industry, the Companies are
periodically subject to various judicial and administrative proceedings
involving federal, state or local agencies. In these proceedings, an agency may
seek to impose fines on the Companies or to revoke or deny renewal of an
operating permit held by the Companies. From time to time the Companies are also
subject to actions brought by citizens' groups or adjacent
                                      F-134
<PAGE>   210
         AMADOR DISPOSAL SERVICES, INC. AND MOTHER LODE SANI-HUT, INC.
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
 
landowners or residents alleging environmental damage or violations of the
permits and licenses pursuant to which the Companies operate. In addition, the
Companies are parties to various claims and suits pending for alleged damages to
persons and property, alleged violations of certain laws and alleged liabilities
arising out of matters occurring during the normal operation of the waste
management business. However, as of June 30, 1998 and September 30, 1998, there
is no current proceedings or litigation involving the Companies that the
Companies believe will have a material adverse impact on the Companies'
business, combined financial position, results of operations and cash flows.
 
6. PENSION PLAN:
 
     Amador Disposal has a defined contribution pension plan for eligible
employees with at least 1,000 hours within one year of employment. Amador
Disposal contributes up to 10% of participants' compensation, which vest based
on years of employment over seven years. Pension expense was approximately
$49,000 for the year ended June 30, 1998, and approximately $12,000 and $13,000
for the three months ended September 30, 1997 and 1998, respectively.
 
7. SALE OF THE COMPANIES:
 
     On December 30, 1998, the shareholders of the Companies sold their stock to
Waste Connections, Inc. (WCI), a publicly traded company. WCI intends to account
for the acquisition using the purchase method.
 
8. PRO FORMA INCOME TAX INFORMATION (UNAUDITED):
 
     As described in Note 1, the Companies operate under Subchapter S of the
Internal Revenue Code and are not subject to federal or state income taxes. Upon
the sale of the Companies stock by the Companies stockholders to WCI (Note 7),
the Subchapter S election will be terminated. As a result, the Companies will be
subject to corporate income taxes subsequent to the termination of the S
corporation status.
 
     The following unaudited pro forma information reflects income tax (benefit)
expense for the year ended June 30, 1998 as if the Companies had been subject to
federal and state income taxes:
 
<TABLE>
<S>                                                         <C>
Federal taxes:
  Current.................................................  $     --
  Deferred................................................   (15,887)
State taxes:
  Current.................................................     1,600
  Deferred................................................    (4,937)
                                                            --------
          Pro forma income tax benefit....................  $(19,224)
                                                            --------
</TABLE>
 
     The pro forma provision for income taxes for the year ended June 30, 1998
differs from the amounts computed by applying the applicable statutory federal
income tax rate (34%) to loss before income taxes due to graduated income tax
rates.
 
     The Companies' unaudited pro forma deferred tax liability at June 30, 1998
would be approximately $11,000 which relates primarily to differences between
tax and financial methods of depreciation.
 
                                      F-135
<PAGE>   211
 
               REPORT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS
 
Board of Directors and Shareholders
Butler County Landfill, Inc.
Kobus Construction, Inc.
 
     We have audited the accompanying combined balance sheet of Butler County
Landfill, Inc. and Kobus Construction, Inc. (collectively the "Companies") as of
December 31, 1997, and the related combined statements of income and retained
earnings, and cash flows for the year then ended. These financial statements are
the responsibility of the Companies' management. Our responsibility is to
express an opinion on these financial statements based on our audit.
 
     We conducted our audit in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audit provides a reasonable basis for our opinion.
 
     In our opinion, the financial statements referred to above present fairly,
in all material respects, the combined financial position of the Companies at
December 31, 1997, and the combined results of their operations and their cash
flows for the year ended December 31, 1997, in conformity with generally
accepted accounting principles.
 
                                                           /s/ ERNST & YOUNG LLP
 
Sacramento, California
December 30, 1998
 
                                      F-136
<PAGE>   212
 
           BUTLER COUNTY LANDFILL, INC. AND KOBUS CONSTRUCTION, INC.
 
                             COMBINED BALANCE SHEET
               (IN THOUSANDS, EXCEPT SHARE AND PER SHARE AMOUNTS)
 
                                     ASSETS
 
<TABLE>
<CAPTION>
                                                              DECEMBER 31,    SEPTEMBER 30,
                                                                  1997            1998
                                                              ------------    -------------
                                                                               (UNAUDITED)
<S>                                                           <C>             <C>
Current assets:
  Cash and cash equivalents.................................     $   33          $   47
  Short-term investments....................................         28              47
  Accounts receivable.......................................        344             428
  Prepaid expenses and other current assets.................         84             107
                                                                 ------          ------
          Total current assets..............................        489             629
Property, plant and equipment, net..........................      3,219           3,124
Restricted assets...........................................        352             331
Other assets................................................         18              20
                                                                 ------          ------
                                                                 $4,078          $4,104
                                                                 ======          ======
                           LIABILITIES AND SHAREHOLDERS' EQUITY
Current liabilities:
  Short-term borrowings.....................................     $   27          $   --
  Accounts payable..........................................        114             107
  Accrued liabilities.......................................        280             168
  Current portion of closure and post closure costs.........         94              46
  Current portion of long-term debt.........................        452             608
                                                                 ------          ------
          Total current liabilities.........................        967             929
Long-term debt..............................................        960             816
Closure and post closure costs..............................        361             474
Commitments and contingencies (Note 5)
Shareholders' equity:
  Common stock: at par value; 10,100 shares authorized; 300
     shares issued and outstanding..........................         10              10
  Additional paid-in capital................................          2               2
  Retained earnings.........................................      1,778           1,873
                                                                 ------          ------
          Total shareholders' equity........................      1,790           1,885
                                                                 ------          ------
                                                                 $4,078          $4,104
                                                                 ======          ======
</TABLE>
 
                            See accompanying notes.
                                      F-137
<PAGE>   213
 
           BUTLER COUNTY LANDFILL, INC. AND KOBUS CONSTRUCTION, INC.
 
              COMBINED STATEMENTS OF INCOME AND RETAINED EARNINGS
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                              NINE MONTHS ENDED
                                                               YEAR ENDED       SEPTEMBER 30,
                                                              DECEMBER 31,    ------------------
                                                                  1997         1997       1998
                                                              ------------    -------    -------
                                                                                 (UNAUDITED)
<S>                                                           <C>             <C>        <C>
Revenues....................................................     $3,010       $2,470     $2,419
Operating expenses:
  Cost of operations........................................      1,898        1,604      1,659
  Depreciation and amortization.............................        631          470        408
  Selling, general and administrative.......................        236          183        130
                                                                 ------       ------     ------
Income from operations......................................        245          213        222
Interest expense............................................       (180)        (137)      (109)
Other income (expense), net.................................         43            5        109
                                                                 ------       ------     ------
Net income..................................................        108           81        222
Retained earnings, beginning of period......................      1,820        1,820      1,778
Distributions to shareholders...............................       (150)        (121)      (127)
                                                                 ------       ------     ------
Retained earnings, end of period............................     $1,778       $1,780     $1,873
                                                                 ======       ======     ======
Pro forma income taxes (unaudited -- Note 6)................     $  (42)      $  (32)    $  (86)
                                                                 ======       ======     ======
Pro forma net income (unaudited -- Note 6)..................     $   66       $   49     $  136
                                                                 ======       ======     ======
</TABLE>
 
                            See accompanying notes.
                                      F-138
<PAGE>   214
 
           BUTLER COUNTY LANDFILL, INC. AND KOBUS CONSTRUCTION, INC.
 
                       COMBINED STATEMENTS OF CASH FLOWS
                INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS
                                 (IN THOUSANDS)
 
   
<TABLE>
<CAPTION>
                                                                              NINE MONTHS ENDED
                                                               YEAR ENDED       SEPTEMBER 30,
                                                              DECEMBER 31,    ------------------
                                                                  1997          1997       1998
                                                              ------------    --------    ------
                                                                                 (UNAUDITED)
<S>                                                           <C>             <C>         <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
  Net income................................................     $ 108        $    81     $ 222
  Adjustments to reconcile net income to net cash provided
     by operating activities:
     Depreciation and amortization..........................       631            470       408
     Gain on sale of property, plant and equipment..........        (5)            (4)      (51)
     Closure and post closure expenses......................       101             75        65
     Changes in operating assets and liabilities:
       Accounts receivable..................................       (38)           (46)      (84)
       Prepaid expenses and other current assets............        20             34       (23)
       Accounts payable.....................................       (17)            38        (7)
       Accrued liabilities..................................       106            105      (112)
                                                                 -----        -------     -----
  Net cash provided by operating activities.................       906            753       418
CASH FLOWS FROM INVESTING ACTIVITIES:
  Capital expenditures for property, plant and equipment....      (385)          (283)     (473)
  Proceeds from the sale of property, plant and equipment...       162             81       212
  Purchases of short-term investments.......................        --             --       (19)
  Change in restricted assets...............................      (237)          (198)       21
  Change in other assets....................................        (3)            (3)       (2)
                                                                 -----        -------     -----
  Net cash used in investing activities.....................      (463)          (403)     (261)
CASH FLOWS FROM FINANCING ACTIVITIES:
  Proceeds from long-term debt..............................       608            604       436
  Principal payments on short-term borrowings and long-term
     debt...................................................      (972)          (831)     (452)
  Distributions to shareholders.............................      (150)          (121)     (127)
                                                                 -----        -------     -----
Net cash used in financing activities.......................      (514)          (348)     (143)
                                                                 -----        -------     -----
Net (decrease) increase in cash and cash equivalents........       (71)             2        14
Cash and cash equivalents, beginning of period..............       104            104        33
                                                                 -----        -------     -----
Cash and cash equivalents, end of period....................     $  33        $   106     $  47
                                                                 =====        =======     =====
SUPPLEMENTARY DISCLOSURES OF CASH FLOW INFORMATION AND
  NON-CASH TRANSACTIONS:
Cash paid for interest......................................     $ 180        $   137     $ 109
                                                                 =====        =======     =====
</TABLE>
    
 
                            See accompanying notes.
                                      F-139
<PAGE>   215
 
           BUTLER COUNTY LANDFILL, INC. AND KOBUS CONSTRUCTION, INC.
 
                     NOTES TO COMBINED FINANCIAL STATEMENTS
                               DECEMBER 31, 1997
                             (DOLLARS IN THOUSANDS)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
        THE NINE MONTHS ENDED SEPTEMBER 30, 1997 AND 1998 IS UNAUDITED)
 
1. ORGANIZATION, BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
ORGANIZATION AND BUSINESS
 
     Butler County Landfill, Inc. ("Butler") is a solid waste company that owns
and operates a landfill in Butler County, Nebraska. Kobus Construction Inc.
("Kobus") is a solid waste company that provides collection, transfer and
disposal services to residential and commercial customers in Butler County,
Nebraska.
 
BASIS OF COMBINATION
 
     The combined financial statements include the accounts of Butler and Kobus
(collectively, the "Companies") as a result of their common ownership.
Significant inter-company balances and transactions between the Companies have
been eliminated in combination.
 
SALE OF THE COMPANIES
 
     On December 11, 1998, the Companies' shareholders entered into an agreement
to sell all capital stock of the Companies to Waste Connections, Inc. ("WCI")
for cash and common stock of WCI.
 
INTERIM FINANCIAL INFORMATION
 
     The unaudited interim combined financial statements as of September 30,
1998 and for the nine months ended September 30, 1997 and 1998 have been
prepared in accordance with generally accepted accounting principles for interim
financial information. Accordingly, they do not include all of the information
and footnotes required by generally accepted accounting principles for complete
financial statements. In the opinion of management, all adjustments (consisting
of normal recurring adjustments) considered necessary for a fair presentation
have been included. Operating results for the nine months ended September 30,
1998 are not necessarily indicative of the results that may be expected for the
year ending December 31, 1998.
 
USE OF ESTIMATES
 
     The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the amounts reported in the financial statements and
accompanying notes. Actual results could differ from those estimates.
 
CASH EQUIVALENTS
 
   
     The Companies consider all highly liquid investments with an original
maturity of three months or less to be cash equivalents.
    
 
                                      F-140
<PAGE>   216
           BUTLER COUNTY LANDFILL, INC. AND KOBUS CONSTRUCTION, INC.
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                             (DOLLARS IN THOUSANDS)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
        THE NINE MONTHS ENDED SEPTEMBER 30, 1997 AND 1998 IS UNAUDITED)
 
CONCENTRATIONS OF CREDIT RISK
 
     Financial instruments that potentially subject the Companies to
concentrations of credit risk consist primarily of accounts receivable. Credit
risk on accounts receivable is minimized as a result of the large and diverse
nature of the Companies' customer bases. Historically, credit losses have been
immaterial.
 
PROPERTY, PLANT AND EQUIPMENT
 
     Property, plant and equipment are stated at cost. Improvements or
betterments which significantly extend the life of an asset are capitalized.
Expenditures for maintenance and repair costs are charged to operations as
incurred. The cost of assets retired or otherwise disposed of and the related
accumulated depreciation are eliminated from the accounts in the year of
disposal. Gains and losses resulting from property disposals are included in
other income (expense). Depreciation is computed using the straight-line method
over the estimated useful lives of the assets, or lease term, whichever is
shorter.
 
     The estimated useful lives of property, plant and equipment (excluding
landfill related assets) are as follows:
 
<TABLE>
<S>                                                    <C>
Building and land improvements.......................  15 - 39 years
Equipment and vehicles...............................   3 - 7 years
</TABLE>
 
     Capitalized landfill costs include expenditures for land and related
airspace, permitting costs and preparation costs. Landfill permitting and
preparation costs represent only direct costs related to those activities,
including legal, engineering and construction. Interest is capitalized on
landfill permitting and construction projects and other projects under
development while the assets are undergoing activities to ready them for their
intended use. The interest capitalization rate is based on the Companies'
weighted average cost of indebtedness. Landfill permitting, acquisition and
preparation costs, excluding the estimated residual value of land, are amortized
as permitted airspace of the landfill is consumed. Landfill preparation costs
include the costs of construction associated with excavation, liners, site berms
and the installation of leak detection and leachate collection systems. In
determining the amortization rate for a landfill, preparation costs include the
total estimated costs to complete construction of the landfills' permitted
capacity. Units-of-production amortization rates are determined annually for the
Companies' operating landfill. The rates are based on estimates provided by the
Companies' outside engineers and consider the information provided by surveys
which are performed at least annually.
 
LONG-LIVED ASSETS
 
     The Companies continually evaluate the value and future benefits of their
long-lived assets. The Companies assess recoverability based on estimates of
future undiscounted cash flows. Under this approach, the carrying value would be
reduced to fair value if it becomes probable that the Companies' best estimates
for expected undiscounted future cash flows would be less than the carrying
amount of the long-lived assets. Through December 31, 1997, there were no
adjustments to the carrying amounts of long-lived assets resulting from these
evaluations.
 
                                      F-141
<PAGE>   217
           BUTLER COUNTY LANDFILL, INC. AND KOBUS CONSTRUCTION, INC.
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                             (DOLLARS IN THOUSANDS)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
        THE NINE MONTHS ENDED SEPTEMBER 30, 1997 AND 1998 IS UNAUDITED)
 
RESTRICTED ASSETS
 
   
     The Companies are required to fund certain portions of their estimated
closure and post closure liabilities. These amounts are held in a trust account
restricted for expenditures on closure and post closure costs.
    
 
     During 1997, the Companies were awarded two grants from the Nebraska
Department of Environmental Quality ("DEQ") totaling $184 for the purchase of
composting and recycling equipment. Grant funds of $96 were received in 1997,
however at year end no expenditures had been made. During 1996, the Companies
received a $25 grant from the DEQ for the abatement of scrap tires collected at
the landfill. As of December 31, 1997, $17 had been received under this grant
and had not been spent.
 
     As of December 31, 1997, restricted assets consist of the following:
 
<TABLE>
<S>                                                           <C>
Unspent funds received under DEQ grants.....................  $113
Closure and post closure trust fund amounts.................   239
                                                              ----
                                                              $352
                                                              ====
</TABLE>
 
CLOSURE AND POST CLOSURE COSTS
 
     Accrued closure and post-closure costs include the current and non-current
portion of accruals associated with obligations for closure and post-closure
monitoring and maintenance of the landfill. The Companies, based as input from
outside engineers, estimate future closure and post-closure monitoring and
maintenance costs for sold waste landfills based on its interpretation of the
technical standards of the U.S. Environmental Protection Agency's Subtitle D
regulations and the air emissions standards under the Clean Air Act as they are
being applied on a state-by-state basis. Closure and post closure monitoring and
maintenance costs represent the costs related to cash expenditures yet to be
incurred when a landfill facility ceases to accept waste and closes. Accruals
for closure and post-closure monitoring and maintenance requirements in the U.S.
consider final capping of the site, site inspection, groundwater monitoring,
leachate management, methane gas control and recovery, and operating and
maintenance costs to be incurred during the period after the facility closes.
Certain of these environmental costs, principally capping and methane gas
control costs, are also incurred during the operating life of the site in
accordance with the landfill operation requirements of Subtitle D and the air
emissions standards. Reviews of the future requirements for closure and
post-closure monitoring and maintenance costs for the Companies' operating
landfills are performed by the Companies' consulting engineers at least annually
and are the basis upon which the Companies' estimates of these future costs and
the related accrual rates are revised. The Companies provides accruals for these
estimated costs as the remaining permitted airspace of such facilities is
consumed. The State of Nebraska requires a specified portion of these accrued
closure and post-closure obligations to be funded at any point in time.
 
REVENUE RECOGNITION
 
     The Companies recognize revenues as services are provided related to
hauling and disposal and upon the receipt and acceptance of waste material at
its landfill and materials recovery facility.
 
                                      F-142
<PAGE>   218
           BUTLER COUNTY LANDFILL, INC. AND KOBUS CONSTRUCTION, INC.
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                             (DOLLARS IN THOUSANDS)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
        THE NINE MONTHS ENDED SEPTEMBER 30, 1997 AND 1998 IS UNAUDITED)
 
INCOME TAXES
 
     The Companies operate under Subchapter S of the Internal Revenue Code for
federal and state income tax reporting purposes. Consequently all of the income
tax attributes and liabilities of the Companies' operations flow through to the
individual shareholders and no provision for income taxes has been made in the
combined financial statements.
 
2. PROPERTY, PLANT AND EQUIPMENT
 
     Property, plant and equipment as of December 31, 1997 and September 30,
1998 consists of the following:
 
<TABLE>
<CAPTION>
                                                     DECEMBER 31,    SEPTEMBER 30,
                                                         1997            1998
                                                     ------------    -------------
                                                                      (UNAUDITED)
<S>                                                  <C>             <C>
Buildings and land improvements....................    $   737          $   870
Landfill related assets............................      2,982            2,982
Equipment and vehicles.............................      1,796            1,780
                                                       -------          -------
                                                         5,515            5,632
Less accumulated depreciation and amortization.....     (2,296)          (2,508)
                                                       -------          -------
                                                       $ 3,219          $ 3,124
                                                       =======          =======
</TABLE>
 
3. SHORT-TERM BORROWINGS
 
     The Companies maintain an equipment line of credit (the "Line") with a
financial institution. Under the Line, the Companies may borrow an amount up to
$100 for the purchase of equipment. Interest on the Line is payable at 9.5%
semi-annually. All outstanding principal plus accrued interest was paid off on
January 15, 1998. The Line was secured by substantially all of the Companies'
assets and was also guaranteed by the Companies' shareholders.
 
                                      F-143
<PAGE>   219
           BUTLER COUNTY LANDFILL, INC. AND KOBUS CONSTRUCTION, INC.
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                             (DOLLARS IN THOUSANDS)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
        THE NINE MONTHS ENDED SEPTEMBER 30, 1997 AND 1998 IS UNAUDITED)
 
4. LONG-TERM DEBT
 
     Long-term debt as of December 31, 1997 consists of the following:
 
   
<TABLE>
<CAPTION>
                                                              DECEMBER 31,
                                                                  1997
                                                              ------------
<S>                                                           <C>
Construction note payable bearing interest at 10.75%;
  payable in monthly installments of principal and interest
  of $30; maturing December 2000; secured by the landfill
  and Materials Recovery Facility with a net carrying value
  of $854 as of December 31, 1997...........................     $  908
Notes payable bearing various rates of interest (ranging
  from 8.75% to 9.5%), payable in monthly installments of
  principal and interest (aggregating $23), maturing at
  various dates through February 2002; secured by
  substantially all of the Companies' assets................        308
Note payable bearing interest at 6%; payable in annual
  installments of principal and interest of $10; maturing
  February 1, 2012; secured by land with a net carrying
  value of $125 as of December 31, 1997.....................         97
Equipment financing notes payable bearing interest at
  various rates (ranging from 9.5% to 9.9%); payable in
  monthly installments of principal and interest
  (aggregating $4); maturing through November 2000; secured
  by substantially all of the Companies' assets.............         99
                                                                 ------
                                                                  1,412
Less current portion........................................        452
                                                                 ------
Long-term debt..............................................     $  960
                                                                 ======
</TABLE>
    
 
     As of December 31, 1997, aggregate contractual future principal payments by
calendar year on long-term debt are due as follows:
 
<TABLE>
<S>                                                           <C>
1998........................................................  $  452
1999........................................................     465
2000........................................................     392
2001........................................................      18
2002........................................................      10
Thereafter..................................................      75
                                                              ------
                                                              $1,412
                                                              ======
</TABLE>
 
5. COMMITMENTS AND CONTINGENCIES
 
COMMITMENTS
 
  Operating Leases
 
     The Companies leases certain equipment under cancelable and noncancelable
operating leases. Rent expense under these agreements amounted to $106 for the
year ended December 31, 1997.
 
                                      F-144
<PAGE>   220
           BUTLER COUNTY LANDFILL, INC. AND KOBUS CONSTRUCTION, INC.
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                             (DOLLARS IN THOUSANDS)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
        THE NINE MONTHS ENDED SEPTEMBER 30, 1997 AND 1998 IS UNAUDITED)
 
     As of December 31, 1997, future minimum lease payments under these
noncancelable operating leases, by calendar year, are as follows:
 
   
<TABLE>
<S>                                                           <C>
1998........................................................  $ 90
1999........................................................    81
2000........................................................    38
2001........................................................     9
                                                              ----
                                                              $218
                                                              ====
</TABLE>
    
 
CONTINGENCIES
 
  Environmental Risks
 
     The Companies are subject to liability for any environmental damage that
the solid waste facilities they operate may cause to neighboring landowners,
particularly as a result of the contamination of drinking water sources or soil,
including damage resulting from conditions existing prior to the operation of
such facilities by the Companies. The Companies may also be subject to liability
for any off-site environmental contamination caused by pollutants or hazardous
substances whose transportation, treatment or disposal was arranged by the
Companies. Any substantial liability for environmental damage incurred by the
Companies could have a material adverse effect on the Companies' combined
financial condition, results of operations or cash flows.
 
  Legal Proceedings
 
     In the normal course of their business and as a result of the extensive
governmental regulation of the solid waste industry, the Companies may
periodically become subject to various judicial and administrative proceedings
involving federal, state or local agencies. In these proceedings, an agency may
seek to impose fines on the Companies or to revoke or deny renewal of an
operating permit held by the Companies. From time to time the Companies may also
be subject to actions brought by citizens' groups or adjacent landowners in
connection with the permitting and licensing of landfills and transfer stations,
or alleging environmental damage or violations of the permits and licenses
pursuant to which the Companies operates.
 
   
     In addition, the Companies may become party to various claims and suits
pending for alleged damages to persons and property, alleged violations of
certain laws and alleged liabilities arising out of matters occurring during the
normal operation of the waste management business. However, as of December 31,
1997 and September 30 1998, there are no current proceedings or litigation
involving the Companies that the Companies believe will have a material adverse
impact on the Companies' business, financial condition, results of operations or
cash flows.
    
 
6. PRO FORMA INCOME TAX INFORMATION (UNAUDITED)
 
     As described in Note 1, the Companies operate under Subchapter S of the
Internal Revenue Code and are not subject to Federal income taxes. The pro form
income taxes represent estimates of income tax expense had the Companies filed
income tax returns as regular corporations.
 
                                      F-145
<PAGE>   221
           BUTLER COUNTY LANDFILL, INC. AND KOBUS CONSTRUCTION, INC.
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1997
                             (DOLLARS IN THOUSANDS)
                (INFORMATION RELATING TO SEPTEMBER 30, 1998 AND
        THE NINE MONTHS ENDED SEPTEMBER 30, 1997 AND 1998 IS UNAUDITED)
 
   
     The pro forma provisions for income taxes for the year ended December 31,
1997 and the nine months ended September 30, 1997 and 1998, differ from the
amounts computed by applying the applicable statutory federal income tax rate
(34%) to income before income taxes due primarily to state franchise taxes.
    
 
7. YEAR 2000 (UNAUDITED)
 
     The Companies will need to modify or replace portions of its software so
that its computer systems will function properly with respect to dates in the
year 2000 ("Year 2000") and thereafter. To date, the Companies have not incurred
any costs related to the Year 2000 project. The Companies do not believe that
their expenditures relating to the Year 2000 project will be material. However,
if the required Year 2000 modifications and conversions are not made or are not
completed in a timely manner, the Year 2000 issue could materially affect the
Companies' operations.
 
                                      F-146
<PAGE>   222
 
             ------------------------------------------------------
             ------------------------------------------------------
 
PROSPECTIVE INVESTORS MAY RELY ONLY ON THE INFORMATION IN THIS PROSPECTUS.
NEITHER THE COMPANY NOR ANY SELLING STOCKHOLDER HAS AUTHORIZED ANYONE TO PROVIDE
PROSPECTIVE INVESTORS WITH INFORMATION DIFFERENT FROM THAT IN THIS PROSPECTUS.
THIS PROSPECTUS IS NOT AN OFFER TO SELL, AND IT DOES NOT SEEK AN OFFER TO BUY,
THESE SECURITIES IN ANY JURISDICTION WHERE THE OFFER OR SALE IS NOT PERMITTED.
THE INFORMATION IN THIS PROSPECTUS IS CORRECT ONLY AS OF THE DATE OF THIS
PROSPECTUS, REGARDLESS OF WHEN THIS PROSPECTUS IS DELIVERED OR THESE SECURITIES
ARE SOLD.
 
                            ------------------------
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                      PAGE
                                      ----
<S>                                   <C>
Available Information...............    2
Prospectus Summary..................    3
Risk Factors........................    8
Dividend Policy.....................   17
Price Range of Common Stock.........   17
Selected Historical and Pro Forma
  Financial and Operating Data......   18
Management's Discussion and Analysis
  of Financial Condition and Results
  of Operations.....................   22
Business............................   35
Management..........................   53
Certain Transactions................   61
Principal Stockholders..............   64
Description of Capital Stock........   66
Shares Eligible for Future Sale.....   69
Outstanding Securities Covered by
  This Prospectus...................   70
Legal Matters.......................   71
Experts.............................   72
Index to Financial Statements.......  F-1
</TABLE>
 
             ------------------------------------------------------
             ------------------------------------------------------
             ------------------------------------------------------
             ------------------------------------------------------
                                3,000,000 SHARES
 
                                     [LOGO]
 
                                  COMMON STOCK
 
                              --------------------
                                   PROSPECTUS
                              --------------------
 
                                JANUARY   , 1999
             ------------------------------------------------------
             ------------------------------------------------------
<PAGE>   223
 
                                    PART II
 
                     INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 20. INDEMNIFICATION OF DIRECTORS AND OFFICERS
 
The Amended and Restated Certificate of Incorporation (the "Restated
Certificate") of the Company provides that a director will not be personally
liable to the Company or its stockholders for monetary damages for breach of
fiduciary duty as a director, except for liability (i) for any breach of the
director's duty of loyalty to the corporation or its stockholders, (ii) for acts
or omissions not in good faith or which involve intentional misconduct or a
knowing violation of law, (iii) under Section 174 of the Delaware General
Corporation Law (the "Delaware Law"), which concerns unlawful payments of
dividends, stock purchases or redemptions, or (iv) for any transaction from
which the director derived an improper personal benefit. If the Delaware Law is
subsequently amended to permit further limitation of the personal liability of
directors, the liability of a director of the Company will be eliminated or
limited to the fullest extent permitted by the Delaware Law as amended.
 
Section 145(a) of the Delaware Law provides that a corporation may indemnify any
person who was or is a party or is threatened to be made a party to any
threatened, pending or completed action, suit or proceeding, whether civil,
criminal, administrative or investigative (other than an action by or in the
right of the corporation) by reason of the fact that he is or was a director,
officer, employee or agent of the corporation, or is or was serving at the
request of the corporation as a director, officer, employee or agent of another
corporation, partnership, joint venture, trust or other enterprise, against
expenses (including attorneys' fees), judgments, fines and amounts paid in
settlement actually and reasonably incurred by him in connection with such
action, suit or proceeding if he acted in good faith and in a manner he
reasonably believed to be in or not opposed to the best interests of the
corporation, and, with respect to any criminal action or proceeding, had no
reasonable cause to believe his conduct was unlawful. The termination of any
action, suit or proceeding by judgment, order, settlement, conviction, or upon a
plea of non contendere or its equivalent, shall not, of itself, create a
presumption that the person did not act in good faith and in a manner which he
reasonably believed to be in or not opposed to the best interest of the
corporation, and, with respect to any criminal action or proceeding, had
reasonable cause to believe that his conduct was unlawful.
 
Section 145(b) of the Delaware Law states that a corporation may indemnify any
person who was or is a party or is threatened to be made a party to any
threatened, pending or completed action or suit by or in the right of the
corporation to procure a judgment in its favor by reason of the fact that he is
or was a director, officer, employee or agent of the corporation, or is or was
serving at the request or agent of another corporation, partnership, joint
venture, trust or other enterprise against expenses (including attorneys' fees)
actually and reasonably incurred by him in connection with the defense or
settlement of such action or suit if he acted in good faith and in a manner he
reasonably believed to be in or not opposed to the best interests of the
corporation and except that no indemnification shall be made in respect of any
claim, issue or matter as to which such person shall have been adjudged to be
liable to the corporation unless and only to the extent that the Court of
Chancery or the court in which such action or suit is brought shall determine
upon application that, despite the adjudication of liability but in view of all
the circumstances of
 
                                      II-1
<PAGE>   224
 
the case, such person is fairly and reasonably entitled to indemnity for such
expenses which the Court of Chancery or such other court shall deem proper.
 
Section 145(c) of the Delaware Law provides that to the extent that a director,
officer, employee or agent of a corporation has been successful on the merits or
otherwise in defense of any action, suit or proceeding referred to in
subsections (a) and (b) of section 145, or in defense of any claim, issue or
matter therein, he shall be indemnified against expenses (including attorneys'
fees) actually and reasonably incurred by him in connection therewith.
 
Section 145(d) of the Delaware Law states that any indemnification under
subsections (a) and (b) of section 145 (unless ordered by a court) shall be made
by the corporation only as authorized in the specific case upon a determination
that indemnification of the director, officer, employee or agent is proper in
the circumstances because he has met the applicable standard of conduct set
forth in subsections (a) and (b). Such determination shall be made (i) by the
board of directors by a majority vote of a quorum consisting of directors who
were not parties to such action, suit or proceeding, or (ii) if such a quorum is
not obtainable, or, even if obtainable, a quorum of disinterested directors so
directs, by independent legal counsel in a written opinion, or (iii) by the
stockholders.
 
Section 145(e) of the Delaware Law provides that expenses (including attorneys'
fees) incurred by an officer or director in defending any civil, criminal,
administrative or investigative action, suit or proceeding may be paid by the
corporation in advance of the final disposition of such action, suit or
proceeding upon receipt of an undertaking by or on behalf of such director or
officer to repay such amount if it shall ultimately be determined that he is not
entitled to be indemnified by the corporation as authorized in section 145. Such
expenses (including attorneys' fees) incurred by other employees and agents may
be so paid upon such terms and conditions, if any, as the board of directors
deems appropriate.
 
Section 145(f) of the Delaware Law states that the indemnification and
advancement of expenses provided by, or granted pursuant to, the other
subsections of section 145 shall not be deemed exclusive of any other rights to
which those seeking indemnification or advancement of expenses may be entitled
under any bylaw, agreement, vote of stockholders or disinterested directors or
otherwise, both as to action in his official capacity and as to action in
another capacity while holding such office.
 
Section 145(g) of the Delaware Law provides that a corporation shall have the
power to purchase and maintain insurance on behalf of any person who is or was a
director, officer, employee or agent of the corporation, or is or was serving at
the request of the corporation as a director, officer, employee or agent of
another corporation, partnership, joint venture, trust or other enterprise,
against any liability asserted against him and incurred by him in any such
capacity, or arising out of his status as such, whether or not the corporation
would have the power to indemnify him against such liability under the
provisions of section 145.
 
Section 145(j) of the Delaware Law states that the indemnification and
advancement of expenses provided by, or granted pursuant to, section 145 shall,
unless otherwise provided when authorized or ratified, continue as to a person
who has ceased to be a director, officer, employee or agent, and shall inure to
the benefit of the heirs, executors and administrators of such a person.
 
                                      II-2
<PAGE>   225
 
Pursuant to Section 145 of the Delaware Law, the Registrant has purchased
insurance on behalf of its present and former directors and officers against any
liability asserted against or incurred by them in such capacity or arising out
of their status as such. The Company has entered into indemnification agreements
with each of its directors and officers providing for mandatory indemnification
and advancement of expenses to the maximum extent permitted by the Delaware Law.
 
ITEM 21. EXHIBITS AND FINANCIAL STATEMENT SCHEDULE
 
a. EXHIBITS.
 
   
<TABLE>
<CAPTION>
 EXHIBIT
 NUMBER                      DESCRIPTION OF EXHIBITS
- ---------                    -----------------------
<S>        <C>
 3.1*      Amended and Restated Certificate of Incorporation of the
           Company, in effect as of the date hereof
 3.2*      Amended and Restated By-laws of the Company, in effect as of
           the date hereof
 4.1*      Form of Common Stock Certificate
 5.1##     Opinion of Shartsis, Friese & Ginsburg LLP
10.1##     Amended and Restated Revolving Credit Agreement, dated as of
           November 20, 1998, between the Company and various banks
           represented by BankBoston, N.A
10.2*      1997 Stock Option Plan
10.3*      Form of Option Agreement(1)
10.4*      Form of Warrant Agreement(2)
10.5*      Warrant Agreement and related Anti-Dilution Agreement issued
           to Imperial Bank
10.6*      Warrant Agreement and related Anti-Dilution Agreement issued
           to BankBoston, N.A
10.7*      Form of Stock Purchase Agreement dated as of September 30,
           1997(3)
10.8##     Form of Third Amended and Restated Investors' Rights
           Agreement dated as of December 31, 1998(3)
10.9*      Employment Agreement among the Company, J. Bradford Bishop,
           Frank W. Cutler, James N. Cutler, Jr. and Ronald J.
           Mittelstaedt, dated as of October 1, 1997
10.10*     First Amended Employment Agreement between the Company and
           Darrell Chambliss, dated as of October 1, 1997
10.11*     First Amended Employment Agreement between the Company and
           Michael Foos, dated as of October 1, 1997
10.12*     First Amended Employment Agreement between the Company and
           Eric Moser, dated as of October 1, 1997
10.13*     Employment Agreement between the Company and Steven Bouck,
           dated as of February 1, 1998
10.14*     Employment Agreement between the Company and Eugene V.
           Dupreau, dated as of February 23, 1998
</TABLE>
    
 
                                      II-3
<PAGE>   226
 
<TABLE>
<CAPTION>
 EXHIBIT
 NUMBER                      DESCRIPTION OF EXHIBITS
- ---------                    -----------------------
<S>        <C>
10.15*     Employment Agreement between the Company and Charles B.
           Youngclaus, dated as of February 23, 1998
10.16+*    Purchase and Sale Agreement, dated as of September 29, 1997,
           between Browning-Ferris Industries, Inc., Browning-Ferris,
           Inc. and Browning-Ferris Industries of Idaho, Inc., as
           Sellers, and the Company, Waste Connections of Idaho, Inc.
           and Continental Paper Recycling, L.L.C. as Buyers
10.17+*    Stock Purchase Agreement, dated as of January 26, 1998,
           among the Company, Waste Connections of Idaho, Inc. and the
           shareholders of Waste Connections of Idaho, Inc.
10.18+*    Stock Purchase Agreement, dated as of February 4, 1998,
           among the Company and the shareholders of Madera Disposal
           Company, Inc.
10.19+*    Asset Purchase Agreement, dated as of March 1, 1998, among
           the Company, Waste Connections of Idaho, Inc., Hunter
           Enterprises, Inc. and the shareholder of Hunter Enterprises,
           Inc.
10.20*     Form of Indemnification Agreement entered into by the
           Company and each of its directors and officers
10.21+*    Asset Purchase Agreement, dated as of April 8, 1998, between
           the Company, Waste Connections of Wyoming, Inc., A-1
           Disposal, Inc., David Jones and Thomas Fries
10.22+*    Asset Purchase Agreement, dated as of April 8, 1998, between
           the Company, Waste Connections of Wyoming, Inc. and
           Gwendolyn L. Sullivan
10.23+*    Stock Purchase Agreement, dated as of May 8, 1998, by and
           among the Company, Sunshine Sanitation, Incorporated, Robert
           E. Ewing and Sherry D. Ewing
10.24+*    Stock Purchase Agreement, dated as of May 8, 1998, by and
           among the Company, Sowers' Sanitation, Inc., James C. Sowers
           and Mildred A. Sowers
10.25+*    Stock Purchase Agreement, dated as of May 11, 1998, by and
           among the Company, T&T Disposal, Inc. and Timothy Thomas
10.26+**   Asset Purchase Agreement, dated as of June 1, 1998, by and
           among the Company, Waste Connections of Utah, Inc.,
           Contractor's Waste, L.C., and Brad Kitchen, Heath Johnston
           and R. Scott McQuarrie
10.27+#    Stock Purchase Agreement, dated as of June 5, 1998, by and
           among the Company, B&B Sanitation, Inc., Red Carpet
           Landfill, Inc., Darlin Equipment, Inc., Lyle J. Buller,
           Larue A. Buller, the Lyle J. Buller Revocable Trust dated
           10/11/96 and Larue A. Buller, Trustee of the Larue A. Buller
           Revocable Trust dated 10/11/96
10.28++    Stock Purchase Agreement dated as of June 17, 1998, by and
           among the Company, Arrow Sanitary Service, Inc., Steven
           Giusto, Dennis Giusto, John Giusto, Michael Giusto and
           Kenneth Giusto
10.29++    Stock Purchase Agreement dated as of June 25, 1998, by and
           among the Company, Curry Transfer and Recycling, Oregon
           Waste Technology, Petty H. Smart and A. Lewis Rucker
</TABLE>
 
                                      II-4
<PAGE>   227
 
<TABLE>
<CAPTION>
 EXHIBIT
 NUMBER                      DESCRIPTION OF EXHIBITS
- ---------                    -----------------------
<S>        <C>
10.30*** + Purchase and Sale Agreement dated as of June 25, 1998, by
           and between Petty H. Smart and the Company
10.31*** + Loan Agreement dated as of June 1, 1998, between Madera
           Disposal Systems, Inc. and the California Pollution Control
           Financing Authority
10.32***   Employment Agreement between the Company and David M. Hall,
           dated as of July 8, 1998
10.33*** + Asset Purchase Agreement, dated as of July 27, 1998, by and
           among the Company, Waste Connections of Utah, Inc., Miller
           Containers, Inc., and Douglas L. Miller
10.34+++ + Agreement and Plan of Merger, dated as of July 30, 1998, by
           and among the Company, WCI Acquisition Corporation, Shrader
           Refuse and Recycling Service Company, Duane E. Shrader,
           Myrlen A. Shrader, Daniel L. Shrader, Mark S. Shrader,
           Michael D. Shrader and Daren L. Shrader
10.35+++ + Purchase and Sale Agreement dated as of July 31, 1998, by
           and between Ambler Vincent Development Company and Shrader
           Refuse and Recycling Service Company
10.36*** + Asset Purchase Agreement dated as of August 21, 1998, among
           the Company, Waste Connection of Utah, Inc. and Joseph E.
           Cunningham and Scott L. Helm
10.37*** + Asset Purchase Agreement, dated as of August 10, 1998, by
           and among the Company, Waste Connections of Utah, Inc., ABC
           Waste Inc., and David Boren
10.38***   Form of Investors' Rights Agreement, dated as of July 31,
           1998(4)
10.39*** + Purchase Agreement, dated as of July 31, 1998, by and among
           the Company, Waste Connections of Nebraska, Inc., J & J
           Sanitation Inc., Big Red Roll Off Inc., Garry L. Jeffords,
           Darin R. Mueller, Leslie J. Jeffords, Leland J. Jeffords,
           Bradley Rowan, Great Plains Recycling, Inc., Roma L.
           Jeffords, Kristie K. Mueller, Sheri L. Jeffords and Betty L.
           Hargis
10.40##    Asset Purchase Agreement, dated as of September 18, 1998, by
           and among the Company, Waste Connections of Nebraska, Inc.,
           Affiliated Waste Services, L.L.C., Leroy's Sanitary Service,
           Inc., Elden's Sanitary Service, Inc., Dennis' Sanitary
           Service, Inc., LeRoy Hintz and Janice Hintz, Dennis J. Mrsny
           and Mary Mrsny, and Elden W. Mrsny and Doris Mrsny
10.41##    Asset Purchase Agreement, dated as of September 9, 1998, by
           and among the Company, Madera Disposal Systems, Inc. and
           Charles B. Youngclaus
10.42##    Asset Purchase Agreement, dated as of September 21, 1998, by
           and among the Company, Waste Connections of Utah, Inc.,
           Country Garbage Service Inc., Jay Mecham, Karl Bankowski,
           and Robert Lopez
10.43##    Asset Purchase Agreement, dated as of September 18, 1998, by
           and among the Company, Waste Connections of Nebraska, Inc.,
           Gary D. Wolff and Elizabeth L. Wolff
</TABLE>
 
                                      II-5
<PAGE>   228
 
   
<TABLE>
<CAPTION>
 EXHIBIT
 NUMBER                      DESCRIPTION OF EXHIBITS
- ---------                    -----------------------
<S>        <C>
10.44##    Agreement and Plan of Merger, dated as of September 21,
           1998, by and among the Company, WCI Acquisition Corporation,
           Evergreen Waste Systems Inc., Keith H. Alexander and Todd D.
           Alexander
10.45##    Asset Purchase Agreement, dated as of September 22, 1998, by
           and among the Company, Curry Transfer & Recycling, Inc.,
           Harrell's Septic, Ralph Hirt and Renate Hirt
10.46##    Asset Purchase Agreement, dated as of September 25, 1998, by
           and among the Company, Curry Transfer & Recycling, Inc.,
           Westlane Disposal, Loren Parker and Roberta Parker
10.47##    Asset Purchase Agreement, dated as of October 15, 1998, by
           and among the Company, Waste Connections of Idaho, Inc., R&N
           LLC, Rumsey Sanitation, Inc., NADL Sanitation Inc., Bradley
           D. Rumsey, Emil Nejdl, and Kathy K. Rumsey
10.48##    Purchase and Sale Agreement, dated as of October 15, 1998,
           by and between R&N LLC and Waste Connections of Idaho, Inc.
10.49##    Agreement and Plan of Merger dated as of October 22, 1998,
           by and among Waste Connections, WCI Acquisition Corporation
           I, WCI Acquisition Corporation II, WCI Acquisition
           Corporation III, WCI Acquisition Corporation IV, Murrey's
           Disposal Company, Inc., American Disposal Company, Inc.,
           D.M. Disposal Co., Inc., Tacoma Recycling Company, Inc., the
           Murrey Trust UTA August 5, 1993, as amended, the Bonnie L.
           Murrey Revocable Trust UTA August 5, 1993, as amended,
           Donald J. Hawkins and Irmgard R. Wilcox
21.1##     Subsidiaries of the Registrant
23.1##     Consent of Shartsis, Friese & Ginsburg LLP (included in
           Exhibit 5.1)
23.2       Consent of Ernst & Young LLP, Independent Auditors
23.3       Consent of Grant Thornton LLP, Independent Auditors
23.4       Consent of PricewaterhouseCoopers LLP, Independent Auditors
23.5##     Consent of Williams, Kastner & Gibbs PLLC
24.1##     Power of Attorney (included in Part II of the Registration
           Statement under the caption "Signatures")
</TABLE>
    
 
- ---------------
*   Incorporated by reference to the exhibits filed with the Registrant's
    Registration Statement on Form S-1, Registration No. 333-48029.
 
**  Incorporated by reference to the exhibit filed with the Registrant's Form
    8-K filed on June 15, 1998.
 
#   Incorporated by reference to the exhibit filed with the Registrant's Form
    8-K filed on June 22, 1998.
 
++  Incorporated by reference to the exhibit filed with the Registrant's Form
    8-K filed on July 1, 1998.
 
+++ Incorporated by reference to the exhibit filed with the Registrant's Form
    8-K filed on August 11, 1998.
 
                                      II-6
<PAGE>   229
 
+   Filed without exhibits and schedules (to be provided supplementally on
    request of the Commission).
 
*** Incorporated by reference to the exhibits filed with the Registrant's
    Registration Statement on Form S-4, Registration No. 333-59199.
 
## Previously filed.
 
(1) Pursuant to the 1997 Stock Option Plan, the Company issued options in this
    form to the following officers of the Company (or in certain cases to an
    entity controlled by such individual) for the number of shares of Common
    Stock indicated: Darrell W. Chambliss (150,000); Michael R. Foos (150,000);
    Ronald J. Mittelstaedt (100,000); Eric J. Moser (85,000); Steven F. Bouck
    (200,000); Eugene V. Dupreau (10,000) and Charles B. Youngclaus (10,000).
    The Company also issued options in this form to the following directors of
    the Company: Michael W. Harlan (15,000); and William J. Razzouk (15,000).
 
(2) The Company issued warrants in this form to the following directors of the
    Company (or in certain cases to an entity controlled by such individual) for
    the number of shares of Common Stock indicated: James N. Cutler, Jr.
    (247,000); J. Bradford Bishop (247,000); Ronald J. Mittelstaedt (100,000).
    The Company also issued warrants in this form as follows: warrants to
    purchase 247,000 shares of Common Stock to Board consultant Frank W. Cutler;
    warrants to purchase an aggregate of 200,000 shares of Common Stock to the
    shareholders of Madera in connection with the Company's acquisition of
    Madera; warrants to purchase 66,794 shares of Common Stock to four
    consultants to the Company; and warrants to purchase 50,000 shares of Common
    Stock to Steven Bouck.
 
(3) Each purchaser of shares in the Company's September 1997 private placement
    of 2,300,000 shares of Common Stock and 2,499,998 shares of Series A
    Preferred Stock entered into a Stock Purchase Agreement and an Investors'
    Rights Agreement in these forms with respect to the shares purchased.
    Subsequent holders of the Company's Common Stock have also become parties to
    the Investors' Rights Agreement.
 
(4) Each of the selling shareholders of Shrader Refuse and Recycling Service
    Company is a party to this Investors' Rights Agreement.
 
b. FINANCIAL STATEMENT SCHEDULE.
 
The following Financial Statement Schedule is filed herewith and made a part
hereof:
 
     Schedule II -- Valuation and Quantifying Accounts.
 
All other schedules for which provision is made in the applicable accounting
regulations of the Commission are not required under the related instructions or
are inapplicable, and therefore have been omitted.
 
ITEM 22. UNDERTAKINGS
 
The undersigned Registrant hereby undertakes:
 
(1) To file, during any period in which offers or sales are being made, a
post-effective amendment to this Registration Statement:
 
     (i) To include any prospectus required by section 10(a)(3) of the
     Securities Act of 1933;
 
                                      II-7
<PAGE>   230
 
     (ii) To reflect in the prospectus any facts or events arising after the
     effective date of the Registration Statement (or the most recent
     post-effective amendment thereof) which, individually or in the aggregate,
     represent a fundamental change in the information set forth in the
     Registration Statement;
 
     (iii) To include any material information with respect to the plan of
     distribution not previously disclosed in the registration statement or any
     material change to such information in the Registration Statement.
 
(2) That, for the purpose of determining any liability under the Securities Act
of 1933, each such post-effective amendment shall be deemed to be a new
registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.
 
(3) To remove from registration by means of a post-effective amendment any of
the securities being registered which remain unsold at the termination of the
offering.
 
The undersigned Registrant hereby undertakes that, for purposes of determining
any liability under the Securities Act of 1933, each filing of the registrant's
annual report pursuant to section 13(a) or 15(d) of the Securities Exchange Act
of 1934 (and, where applicable, each filing of an employee benefit plan's annual
report pursuant to section 15(d) of the Securities Exchange Act of 1934) that is
incorporated by reference in the Registration Statement shall be deemed to be a
new registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.
 
The undersigned Registrant hereby undertakes that prior to any public reoffering
of the securities registered hereunder through use of a prospectus which is part
of this Registration Statement, by any person or party who is deemed to be an
underwriter within the meaning of Rule 145(c), such reoffering prospectus will
contain the information called for by the applicable registration form with
respect to reofferings by persons who may be deemed underwriters, in addition to
the information called for by the other items of the applicable form.
 
The undersigned Registrant undertakes that every prospectus that (i) is filed
pursuant to the immediately preceding paragraph, or (ii) purports to meet the
requirements of section 10(a)(3) of the Securities Act of 1933 and is used in
connection with an offering of securities subject to Rule 415, will be filed as
part of an amendment to the Registration Statement and will not be used until
such amendment is effective, and that, for purposes of determining any liability
under the Securities Act of 1933, each such post-effective amendment shall be
deemed to be a new registration statement relating to the securities offered
therein, and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof.
 
Insofar as indemnification for liabilities arising under the Securities Act of
1933 may be permitted to directors, officers and controlling persons of the
Registrant pursuant to the foregoing provisions, or otherwise, the Registrant
has been advised that in the opinion of the Commission such indemnification is
against public policy as expressed in the Securities Act of 1993 and is,
therefore, unenforceable. In the event that a claim for indemnification against
such liabilities (other than the payment by the Registrant of expenses incurred
or paid by a director, officer or controlling person of the Registrant in the
successful defense of any action, suit or proceeding) is asserted by such
director, officer or controlling person
 
                                      II-8
<PAGE>   231
 
in connection with the securities being registered, the Registrant will, unless
in the opinion of its counsel the matter has been settled by controlling
precedent, submit to a court of appropriate jurisdiction the question whether
such indemnification by it is against public policy as expressed in the
Securities Act of 1993 and will be governed by the final adjudication of such
issue.
 
The undersigned Registrant hereby undertakes to supply by means of a
post-effective amendment all information concerning a transaction, and the
company being acquired involved therein, that was not the subject of and
included in the Registration Statement when it became effective, except where
the transaction in which the securities being offered pursuant to this
Registration Statement would be exempt from registration (but for the
possibility of integration) and which have an immaterial effect on the
Registrant.
 
                                      II-9
<PAGE>   232
 
                                   SIGNATURES
 
Pursuant to the requirements of the Securities Act of 1933, the Registrant has
duly caused this registration statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Roseville, State of
California, on January   , 1999.
 
                                   WASTE CONNECTIONS, INC.
 
   
                                   By:      /s/ RONALD J. MITTELSTAEDT*
    
                                      ------------------------------------------
                                                Ronald J. Mittelstaedt
                                       President, Chief Executive Officer and
                                       Chairman
 
Pursuant to the requirements of the Securities Act of 1933, this Registration
Statement has been signed by the following persons in the capacities indicated
on January  , 1999.
 
   
<TABLE>
<CAPTION>
                  SIGNATURE                               TITLE                    DATE
                  ---------                               -----                    ----
<C>                                            <S>                           <C>
         /s/ RONALD J. MITTELSTAEDT*           President, Chief Executive    January   , 1999
- ---------------------------------------------  Officer and Chairman
           Ronald J. Mittelstaedt
 
           /s/ EUGENE V. DUPREAU*              Director and Vice             January   , 1999
- ---------------------------------------------  President -- Madera
              Eugene V. Dupreau
 
           /s/ MICHAEL W. HARLAN*              Director                      January   , 1999
- ---------------------------------------------
              Michael W. Harlan
 
           /s/ WILLIAM J. RAZZOUK*             Director                      January   , 1999
- ---------------------------------------------
             William J. Razzouk
 
            /s/ STEVEN F. BOUCK*               Executive Vice President and  January   , 1999
- ---------------------------------------------  Chief Financial Officer
               Steven F. Bouck
 
            /s/ MICHAEL R. FOOS*               Vice President and Corporate  January   , 1999
- ---------------------------------------------  Controller
               Michael R. Foos
 
            * /s/ STEVEN F. BOUCK                                            January   , 1999
- ---------------------------------------------
               Steven F. Bouck
              Attorney-in-Fact
</TABLE>
    
 
                                      II-10
<PAGE>   233
 
                    WASTE CONNECTIONS, INC. AND PREDECESSORS
 
                SCHEDULE II -- VALUATION AND QUALIFYING ACCOUNTS
                  YEARS ENDED DECEMBER 31, 1995, 1996 AND 1997
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                          ADDITIONS
                                                   -----------------------    DEDUCTIONS
                                      BALANCE AT   CHARGED TO   CHARGED TO   (WRITE-OFFS,    BALANCE
                                      BEGINNING    COSTS AND      OTHER         NET OF       AT END
            DESCRIPTION               OF PERIOD     EXPENSES     ACCOUNTS    COLLECTIONS)   OF PERIOD
            -----------               ----------   ----------   ----------   ------------   ---------
<S>                                   <C>          <C>          <C>          <C>            <C>
Deducted from asset accounts:
  Allowance for doubtful accounts:
     Fibres International, Inc.:
       January 1, 1995 through
          November 30, 1995.........     $ 18         $ 10         $--           $ --         $ 28
     The Disposal Group Combined:
       Year ended December 31,
          1995......................       73          139          --            (99)         113
       Period from January 1, 1996
          through July 31, 1996.....      113           72          --            (94)          91
     Predecessors Combined:
       One month ended December 31,
          1995......................       28           --          --             --           28
       Period ended December 31,
          1996......................       28           61          --             (8)          81
       Nine months ended September
          30, 1997..................       81          139          --            (97)         123
     Waste Connections, Inc.:
       Period from inception
          (September 9, 1997)
          through December 31,
          1997......................       --           19          --             --           19
</TABLE>
<PAGE>   234
 
                                 EXHIBIT INDEX
 
   
<TABLE>
<CAPTION>
 EXHIBIT                                                                 PAGE
 NUMBER                       DESCRIPTION OF EXHIBITS                   NUMBER
- ---------                     -----------------------                   ------
<C>          <S>                                                        <C>
 3.1*        Amended and Restated Certificate of Incorporation of the
             Company, in effect as of the date hereof.................
 3.2*        Amended and Restated By-laws of the Company, in effect as
             of the date hereof.......................................
 4.1*        Form of Common Stock Certificate.........................
 5.1##       Opinion of Shartsis, Friese & Ginsburg LLP...............
10.1##       Amended and Restated Revolving Credit Agreement, dated as
             of November 20, 1998, between the Company and various
             banks represented by BankBoston, N.A.....................
10.2*        1997 Stock Option Plan...................................
10.3*        Form of Option Agreement(1)..............................
10.4*        Form of Warrant Agreement(2).............................
10.5*        Warrant Agreement and related Anti-Dilution Agreement
             issued to Imperial Bank..................................
10.6*        Warrant Agreement and related Anti-Dilution Agreement
             issued to BankBoston, N.A................................
10.7*        Form of Stock Purchase Agreement dated as of September
             30, 1997(3)..............................................
10.8##       Form of Third Amended and Restated Investors' Rights
             Agreement dated as of December 31, 1998(3)...............
10.9*        Employment Agreement among the Company, J. Bradford
             Bishop, Frank W. Cutler, James N. Cutler, Jr. and Ronald
             J. Mittelstaedt, dated as of October 1, 1997.............
10.10*       First Amended Employment Agreement between the Company
             and Darrell Chambliss, dated as of October 1, 1997.......
10.11*       First Amended Employment Agreement between the Company
             and Michael Foos, dated as of October 1, 1997............
10.12*       First Amended Employment Agreement between the Company
             and Eric Moser, dated as of October 1, 1997..............
10.13*       Employment Agreement between the Company and Steven
             Bouck, dated as of February 1, 1998......................
10.14*       Employment Agreement between the Company and Eugene V.
             Dupreau, dated as of February 23, 1998...................
10.15*       Employment Agreement between the Company and Charles B.
             Youngclaus, dated as of February 23, 1998................
10.16+*      Purchase and Sale Agreement, dated as of September 29,
             1997, between Browning-Ferris Industries, Inc.,
             Browning-Ferris, Inc. and Browning-Ferris Industries of
             Idaho, Inc., as Sellers, and the Company, Waste
             Connections of Idaho, Inc. and Continental Paper
             Recycling, L.L.C. as Buyers..............................
</TABLE>
    
<PAGE>   235
 
<TABLE>
<CAPTION>
 EXHIBIT                                                                 PAGE
 NUMBER                       DESCRIPTION OF EXHIBITS                   NUMBER
- ---------                     -----------------------                   ------
<C>          <S>                                                        <C>
10.17+*      Stock Purchase Agreement, dated as of January 26, 1998,
             among the Company, Waste Connections of Idaho, Inc. and
             the shareholders of Waste Connections of Idaho, Inc......
10.18+*      Stock Purchase Agreement, dated as of February 4, 1998,
             among the Company and the shareholders of Madera Disposal
             Company, Inc.............................................
10.19+*      Asset Purchase Agreement, dated as of March 1, 1998,
             among the Company, Waste Connections of Idaho, Inc.,
             Hunter Enterprises, Inc. and the shareholder of Hunter
             Enterprises, Inc.........................................
10.20*       Form of Indemnification Agreement entered into by the
             Company and each of its directors and officers...........
10.21+*      Asset Purchase Agreement, dated as of April 8, 1998,
             between the Company, Waste Connections of Wyoming, Inc.,
             A-1 Disposal, Inc., David Jones and Thomas Fries.........
10.22+*      Asset Purchase Agreement, dated as of April 8, 1998,
             between the Company, Waste Connections of Wyoming, Inc.
             and Gwendolyn L. Sullivan................................
10.23+*      Stock Purchase Agreement, dated as of May 8, 1998, by and
             among the Company, Sunshine Sanitation, Incorporated,
             Robert E. Ewing and Sherry D. Ewing......................
10.24+*      Stock Purchase Agreement, dated as of May 8, 1998, by and
             among the Company, Sowers' Sanitation, Inc., James C.
             Sowers and Mildred A. Sowers.............................
10.25+*      Stock Purchase Agreement, dated as of May 11, 1998, by
             and among the Company, T&T Disposal, Inc. and Timothy
             Thomas...................................................
10.26+**     Asset Purchase Agreement, dated as of June 1, 1998, by
             and among the Company, Waste Connections of Utah, Inc.,
             Contractor's Waste, L.C., and Brad Kitchen, Heath
             Johnston and R. Scott McQuarrie..........................
10.27+#      Stock Purchase Agreement, dated as of June 5, 1998, by
             and among the Company, B&B Sanitation, Inc., Red Carpet
             Landfill, Inc., Darlin Equipment, Inc., Lyle J. Buller,
             Larue A. Buller, the Lyle J. Buller Revocable Trust dated
             10/11/96 and Larue A. Buller, Trustee of the Larue A.
             Buller Revocable Trust dated 10/11/96....................
10.28++      Stock Purchase Agreement dated as of June 17, 1998, by
             and among the Company, Arrow Sanitary Service, Inc.,
             Steven Giusto, Dennis Giusto, John Giusto, Michael Giusto
             and Kenneth Giusto.......................................
10.29++      Stock Purchase Agreement dated as of June 25, 1998, by
             and among the Company, Curry Transfer and Recycling,
             Oregon Waste Technology, Petty H. Smart and A. Lewis
             Rucker...................................................
10.30*** +   Purchase and Sale Agreement dated as of June 25, 1998, by
             and between Petty H. Smart and the Company...............
</TABLE>
<PAGE>   236
 
<TABLE>
<CAPTION>
 EXHIBIT                                                                 PAGE
 NUMBER                       DESCRIPTION OF EXHIBITS                   NUMBER
- ---------                     -----------------------                   ------
<C>          <S>                                                        <C>
10.31*** +   Loan Agreement dated as of June 1, 1998, between Madera
             Disposal Systems, Inc. and the California Pollution
             Control Financing Authority..............................
10.32***     Employment Agreement between the Company and David M.
             Hall, dated as of July 8, 1998...........................
10.33*** +   Asset Purchase Agreement, dated as of July 27, 1998, by
             and among the Company, Waste Connections of Utah, Inc.,
             Miller Containers, Inc., and Douglas L. Miller...........
10.34+++ +   Agreement and Plan of Merger, dated as of July 30, 1998,
             by and among the Company, WCI Acquisition Corporation,
             Shrader Refuse and Recycling Service Company, Duane E.
             Shrader, Myrlen A. Shrader, Daniel L. Shrader, Mark S.
             Shrader, Michael D. Shrader and Daren L. Shrader.........
10.35+++ +   Purchase and Sale Agreement dated as of July 31, 1998, by
             and between Ambler Vincent Development Company and
             Shrader Refuse and Recycling Service Company.............
10.36*** +   Asset Purchase Agreement dated as of August 21, 1998,
             among the Company, Waste Connection of Utah, Inc. and
             Joseph E. Cunningham and Scott L. Helm...................
10.37*** +   Asset Purchase Agreement, dated as of August 10, 1998, by
             and among the Company, Waste Connections of Utah, Inc.,
             ABC Waste Inc., and David Boren..........................
10.38***     Form of Investors' Rights Agreement, dated as of July 31,
             1998(4)..................................................
10.39*** +   Purchase Agreement, dated as of July 31, 1998, by and
             among the Company, Waste Connections of Nebraska, Inc., J
             & J Sanitation Inc., Big Red Roll Off Inc., Garry L.
             Jeffords, Darin R. Mueller, Leslie J. Jeffords, Leland J.
             Jeffords, Bradley Rowan, Great Plains Recycling, Inc.,
             Roma L. Jeffords, Kristie K. Mueller, Sheri L. Jeffords
             and Betty L. Hargis......................................
10.40##      Asset Purchase Agreement, dated as of September 18, 1998,
             by and among the Company, Waste Connections of Nebraska,
             Inc., Affiliated Waste Services, L.L.C., Leroy's Sanitary
             Service, Inc., Elden's Sanitary Service, Inc., Dennis'
             Sanitary Service, Inc., LeRoy Hintz and Janice Hintz,
             Dennis J. Mrsny and Mary Mrsny, and Elden W. Mrsny and
             Doris Mrsny..............................................
10.41##      Asset Purchase Agreement, dated as of September 9, 1998,
             by and among the Company, Madera Disposal Systems, Inc.
             and Charles B. Youngclaus................................
10.42##      Asset Purchase Agreement, dated as of September 21, 1998,
             by and among the Company, Waste Connections of Utah,
             Inc., Country Garbage Service Inc., Jay Mecham, Karl
             Bankowski, and Robert Lopez..............................
10.43##      Asset Purchase Agreement, dated as of September 18, 1998,
             by and among the Company, Waste Connections of Nebraska,
             Inc., Gary D. Wolff and Elizabeth L. Wolff...............
</TABLE>
<PAGE>   237
 
   
<TABLE>
<CAPTION>
 EXHIBIT                                                                 PAGE
 NUMBER                       DESCRIPTION OF EXHIBITS                   NUMBER
- ---------                     -----------------------                   ------
<C>          <S>                                                        <C>
10.44##      Agreement and Plan of Merger, dated as of September 21,
             1998, by and among the Company, WCI Acquisition
             Corporation, Evergreen Waste Systems Inc., Keith H.
             Alexander and Todd D. Alexander..........................
10.45##      Asset Purchase Agreement, dated as of September 22, 1998,
             by and among the Company, Curry Transfer & Recycling,
             Inc., Harrell's Septic, Ralph Hirt and Renate Hirt.......
10.46##      Asset Purchase Agreement, dated as of September 25, 1998,
             by and among the Company, Curry Transfer & Recycling,
             Inc., Westlane Disposal, Loren Parker and Roberta
             Parker...................................................
10.47##      Asset Purchase Agreement, dated as of October 15, 1998,
             by and among the Company, Waste Connections of Idaho,
             Inc., R&N LLC, Rumsey Sanitation, Inc., NADL Sanitation
             Inc., Bradley D. Rumsey, Emil Nejdl, and Kathy K.
             Rumsey...................................................
10.48##      Purchase and Sale Agreement, dated as of October 15,
             1998, by and between R&N LLC and Waste Connections of
             Idaho, Inc...............................................
10.49##      Agreement and Plan of Merger dated as of October 22,
             1998, by and among Waste Connections, WCI Acquisition
             Corporation I, WCI Acquisition Corporation II, WCI
             Acquisition Corporation III, WCI Acquisition Corporation
             IV, Murrey's Disposal Company, Inc., American Disposal
             Company, Inc., D.M. Disposal Co., Inc., Tacoma Recycling
             Company, Inc., the Murrey Trust UTA August 5, 1993, as
             amended, the Bonnie L. Murrey Revocable Trust UTA August
             5, 1993, as amended, Donald J. Hawkins and Irmgard R.
             Wilcox...................................................
21.1##       Subsidiaries of the Registrant...........................
23.1##       Consent of Shartsis, Friese & Ginsburg LLP (included in
             Exhibit 5.1).............................................
23.2         Consent of Ernst & Young LLP, Independent Auditors.......
23.3         Consent of Grant Thornton LLP, Independent Auditors......
23.4         Consent of PricewaterhouseCoopers LLP, Independent
             Auditors.................................................
23.5##       Consent of Williams, Kastner & Gibbs PLLC................
24.1##       Power of Attorney (included in Part II of the
             Registration Statement under the caption "Signatures")...
</TABLE>
    
 
- ---------------
*   Incorporated by reference to the exhibits filed with the Registrant's
    Registration Statement on Form S-1, Registration No. 333-48029.
 
**  Incorporated by reference to the exhibit filed with the Registrant's Form
    8-K filed on June 15, 1998.
 
#   Incorporated by reference to the exhibit filed with the Registrant's Form
    8-K filed on June 22, 1998.
 
++  Incorporated by reference to the exhibit filed with the Registrant's Form
    8-K filed on July 1, 1998.
 
+++ Incorporated by reference to the exhibit filed with the Registrant's Form
    8-K filed on August 11, 1998.
<PAGE>   238
 
+   Filed without exhibits and schedules (to be provided supplementally on
    request of the Commission).
 
*** Incorporated by reference to the exhibits filed with the Registrant's
    Registration Statement on Form S-4, Registration No. 333-59199.
 
## Previously filed.
 
(1) Pursuant to the 1997 Stock Option Plan, the Company issued options in this
    form to the following officers of the Company (or in certain cases to an
    entity controlled by such individual) for the number of shares of Common
    Stock indicated: Darrell W. Chambliss (150,000); Michael R. Foos (150,000);
    Ronald J. Mittelstaedt (100,000); Eric J. Moser (85,000); Steven F. Bouck
    (200,000); Eugene V. Dupreau (10,000) and Charles B. Youngclaus (10,000).
    The Company also issued options in this form to the following directors of
    the Company: Michael W. Harlan (15,000); and William J. Razzouk (15,000).
 
(2) The Company issued warrants in this form to the following directors of the
    Company (or in certain cases to an entity controlled by such individual) for
    the number of shares of Common Stock indicated: James N. Cutler, Jr.
    (247,000); J. Bradford Bishop (247,000); Ronald J. Mittelstaedt (100,000).
    The Company also issued warrants in this form as follows: warrants to
    purchase 247,000 shares of Common Stock to Board consultant Frank W. Cutler;
    warrants to purchase an aggregate of 200,000 shares of Common Stock to the
    shareholders of Madera in connection with the Company's acquisition of
    Madera; warrants to purchase 66,794 shares of Common Stock to four
    consultants to the Company; and warrants to purchase 50,000 shares of Common
    Stock to Steven Bouck.
 
(3) Each purchaser of shares in the Company's September 1997 private placement
    of 2,300,000 shares of Common Stock and 2,499,998 shares of Series A
    Preferred Stock entered into a Stock Purchase Agreement and an Investors'
    Rights Agreement in these forms with respect to the shares purchased.
    Subsequent holders of the Company's Common Stock have also become parties to
    the Investors' Rights Agreement.
 
(4) Each of the selling shareholders of Shrader Refuse and Recycling Service
    Company is a party to this Investors' Rights Agreement.

<PAGE>   1
                                                                    EXHIBIT 23.2

               CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS

We consent to the reference to our firm under the caption "Experts" and to the
use of our report dated March 6, 1998, with respect to the consolidated
financial statements of Waste Connections, Inc. and Predecessors included in
Post Effective Amendment No. 4 to the Registration Statement (Form S-4 No.
333-65615) and related Prospectus of Waste Connections, Inc. for the
registration of 3,000,000 shares of its common stock.

Our audits also included the financial statement schedule of Waste Connections, 
Inc. and Predecessors listed in Item 31(b). This schedule is the responsibility 
of the Company's management. Our responsibility is to express an opinion based 
on our audits. In our opinion, the financial statement schedule referred to 
above, when considered in relation to the basic financial statements taken as a 
whole, presents fairly in all material respects the information set forth 
therein.

We also consent to the reference to our firm under the caption "Experts" and to
the use of our report dated October 2, 1998 (except for Note 12, as to which the
date is October 22, 1998) with respect to the combined financial statements of
the Murrey Companies included in Post Effective Amendment No. 4 to the
Registration Statement (Form S-4 No. 333-65615) and related Prospectus of Waste
Connections, Inc. for the registration of 3,000,000 shares of its common stock.

We also consent to the reference to our firm under the caption "Experts" and to 
the use of our report dated February 20, 1998, with respect to the financial 
statements of Madera Disposal Systems, Inc. included in Post Effective Amendment
No. 4 to the Registration Statement (Form S-4 No. 333-65615) and related
Prospectus of Waste Connections, Inc. for the registration of 3,000,000 shares
of its common stock.

We also consent to the reference to our firm under the caption "Experts" and to
the use of our report dated July 8, 1998, with respect to the financial
statements of Arrow Sanitary Service, Inc. included in Post Effective Amendment
No. 4 to the Registration Statement (Form S-4 No. 333-65615) and related
Prospectus of Waste Connections, Inc. for the registration of 3,000,000 shares
of its common stock.

We also consent to the reference to our firm under the caption "Experts" and to
the use of our report dated August 36, 1998, with respect to the financial
statements of Contractor's Waste Removal, L.C., included in Post Effective
Amendment No. 4 to the Registration Statement (Form S-4 No. 333-65615) and
related Prospectus of Waste Connections, Inc. for the registration of 3,000,000
shares of its common stock.

We also consent to the reference to our firm under the caption "Experts" and to
the use of our report dated July 31, 1998, with respect to the consolidated
financial statements of Curry Transfer and Recycling, Inc. included in Post
Effective Amendment No. 4 to the Registration Statement (Form S-4 No. 333-65615)
and related Prospectus of Waste Connections, Inc. for the registration of
3,000,000 shares of its common stock.

We also consent to the reference to our firm under the caption "Experts" and to
the use of our report dated December 30, 1998, with respect to the combined
financial statements of Butler County Landfill, Inc. and Kobus Construction,
Inc. included in Post Effective Amendment No. 4 to the Registration Statement
(Form S-4 No. 333-65615) and related Prospectus of Waste Connections, Inc. for
the registration of 3,000,000 shares of its common stock.



                                                          /s/  ERNST & YOUNG LLP

Sacramento, California
January 6, 1999

<PAGE>   1
                                                                    EXHIBIT 23.3


               CONSENT OF GRANT THORNTON LLP, INDEPENDENT AUDITORS



We have issued our report dated August 24, 1998 accompanying the financial
statements of Shrader Refuse and Recycling Service Company included in the Post
Effective Amendment No. 4 to the Registration Statement (Form S-4 No. 333-65615,
effective October 19, 1998) and related Prospectus of Waste Connections, Inc.
for the registration of 3,000,000 shares of its common stock.

We have also issued our report dated October 1, 1998 accompanying the combined
financial statements of B&B Sanitation included in the Post Effective Amendment
No. 4 to the Registration Statement (Form S-4 No. 333-65615, effective October
19, 1998) and related Prospectus of Waste Connections, Inc. for the registration
of 3,000,000 shares of its common stock.

We have also issued our report dated October 7, 1998 accompanying the combined
financial statements of J & J Sanitation included in the Post Effective
Amendment No. 4 to the Registration Statement (Form S-4 No. 333-65615, effective
October 19, 1998) and related Prospectus of Waste Connections, Inc. for the
registration of 3,000,000 shares of its common stock.

We consent to the use of the aforementioned reports in this Post Effective
Amendment No. 4 to the Registration Statement (Form S-4 No. 333-65615, effective
October 19, 1998) and related Prospectus of Waste Connections, Inc. and to the
use of our name as it appears under the caption "Experts."

GRANT THORNTON LLP

Lincoln, Nebraska
January 6, 1999

<PAGE>   1
 
                                                                    EXHIBIT 23.4
 
          CONSENT OF PRICEWATERHOUSECOOPERS LLP, INDEPENDENT AUDITORS
 
   
     We consent to the inclusion in this post-effective amendment No. 4 to
registration statement on Form S-4 (File No. 333-65615) and the related
Prospectus of Waste Connections, Inc. for the registration of 3,000,000 shares
of common stock of our report dated December 30, 1998, on our audit of the
combined financial statements of Amador Disposal Services, Inc. and Mother Lode
Sani-Hut, Inc. We also consent to the reference to our firm under the caption
"Experts".
    
 
/s/ PricewaterhouseCoopers LLP
 
Sacramento, California
January 4, 1999


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