AMERICAN DISPOSAL SERVICES INC
S-1, 1996-05-31
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<PAGE>
      AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON MAY 31, 1996
 
                                                     REGISTRATION NO. 333-
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                           --------------------------
 
                                    FORM S-1
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
                            ------------------------
 
                        AMERICAN DISPOSAL SERVICES, INC.
             (Exact name of registrant as specified in its charter)
 
<TABLE>
<S>                              <C>                            <C>
           DELAWARE                          4953                  13-3858494
 (State or other jurisdiction    (Primary Standard Industrial   (I.R.S. Employer
              of                 Classification Code Number)     Identification
incorporation or organization)                                        No.)
</TABLE>
 
                              745 MCCLINTOCK DRIVE
                                   SUITE 305
                           BURR RIDGE, ILLINOIS 60521
                                 (708) 655-1105
              (Address, including zip code, and telephone number,
       including area code, of registrant's principal executive offices)
 
                               ANN L. STRAW, ESQ.
                        AMERICAN DISPOSAL SERVICES, INC.
                              745 MCCLINTOCK DRIVE
                                   SUITE 305
                           BURR RIDGE, ILLINOIS 60521
                                 (708) 655-1105
           (Name, address, including zip code, and telephone number,
                   including area code, of agent for service)
                           --------------------------
 
                          COPIES OF COMMUNICATIONS TO:
 
<TABLE>
<S>                                       <C>
        Stephen W. Rubin, Esq.                   Howard L. Shecter, Esq.
Proskauer Rose Goetz & Mendelsohn LLP          Morgan, Lewis & Bockius LLP
            1585 Broadway                            101 Park Avenue
       New York, New York 10036                  New York, New York 10178
            (212) 969-3000                            (212) 309-6000
</TABLE>
 
                           --------------------------
 
 APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE OF SECURITIES TO THE PUBLIC:
    As soon as possible after the Registration Statement becomes effective.
                           --------------------------
 
    If  any of the securities being registered on this Form are to be offered on
a delayed or continuous basis pursuant to  Rule 415 under the Securities Act  of
1933, 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, please 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(c)
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 delivery of the prospectus is expected  to be made pursuant to Rule  434,
please check the following box. / /
                           --------------------------
 
                        CALCULATION OF REGISTRATION FEE
 
<TABLE>
<CAPTION>
                                                                         PROPOSED MAXIMUM
                       TITLE OF EACH CLASS OF                               AGGREGATE               AMOUNT OF
                    SECURITIES TO BE REGISTERED                         OFFERING PRICE (1)       REGISTRATION FEE
<S>                                                                   <C>                     <C>
Common Stock, par value $.01 per share..............................       $44,275,000              $15,268.00
<FN>
(1)  Estimated  solely  for  the  purpose  of  calculating  the  amount  of  the
     registration fee pursuant to Rule 457(o) under the Securities Act of 1933.
</TABLE>
 
                           --------------------------
 
    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 THEREAFTER 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.
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>
                        AMERICAN DISPOSAL SERVICES, INC.
                     CROSS REFERENCE SHEET SHOWING LOCATION
           IN PROSPECTUS OF INFORMATION REQUIRED BY ITEMS OF FORM S-1
 
<TABLE>
<CAPTION>
REGISTRATION STATEMENT ITEM AND HEADING                                                 LOCATION IN PROSPECTUS
- ------------------------------------------------------------------------  --------------------------------------------------
<C>        <C>        <S>                                                 <C>
       1.  Forepart of the Registration Statement and Outside Front
            Cover Page of Prospectus....................................  Facing Page of Registration Statement; Cross
                                                                           Reference Sheet; Outside Front Cover Page
       2.  Inside Front and Outside Back Cover Pages of Prospectus......  Inside Front Cover Page; Outside Back Cover Page
       3.  Summary Information, Risk Factors and Ratio of Earnings to
            Fixed Charges...............................................  Prospectus Summary; Risk Factors; The Company
       4.  Use of Proceeds..............................................  Use of Proceeds
       5.  Determination of Offering Price..............................  Underwriting
       6.  Dilution.....................................................  Dilution
       7.  Selling Security Holders.....................................  Not applicable
       8.  Plan of Distribution.........................................  Outside Front Cover Page; Underwriting
       9.  Description of Securities to be Registered...................  Description of Capital Stock
      10.  Interest of Named Experts and Counsel........................  Not applicable
      11.  Information With Respect to the Registrant
                 (a)  Description of Business...........................  Prospectus Summary; Business; Management's
                                                                           Discussion and Analysis of Financial Condition
                                                                           and Results of Operations
                 (b)  Description of Property...........................  Business
                 (c)  Legal Proceedings.................................  Business
                 (d)  Dividends and Related Stockholder Matters.........  Risk Factors; Capitalization; Dividend Policy;
                                                                           Description of Capital Stock
                 (e)  Financial Statements..............................  Consolidated Financial Statements; Unaudited
                                                                           Interim Condensed Consolidated Financial
                                                                           Statements; Unaudited Pro Forma Consolidated
                                                                           Financial Statements; Financial Statements of
                                                                           Acquired Companies (CDI Acquisition)
                 (f)  Selected Financial Data...........................  Prospectus Summary; Selected Consolidated
                                                                           Financial Data
                 (g)  Supplementary Financial Information...............  Not applicable
                 (h)  Management's Discussion and Analysis of Financial
                       Condition and Results of Operations..............  Management's Discussion and Analysis of Financial
                                                                           Condition and Results of Operations
                 (i)  Changes in and Disagreements with Accountants on
                       Accounting and Financial Disclosure..............  Experts
                 (j)  Directors and Executive Officers..................  Management
                 (k)  Executive Compensation............................  Management
                 (l)  Security Ownership of Certain Beneficial Owners
                       and Management...................................  Principal Stockholders; Shares Eligible for Future
                                                                           Sale
                 (m)  Certain Relationships and Related Transactions....  Certain Transactions
      12.  Disclosure of Commission Position on Indemnification for
            Securities Act Liabilities..................................  Not applicable
</TABLE>
<PAGE>
INFORMATION   CONTAINED  HEREIN  IS  SUBJECT   TO  COMPLETION  OR  AMENDMENT.  A
REGISTRATION STATEMENT  RELATING TO  THESE SECURITIES  HAS BEEN  FILED WITH  THE
SECURITIES  AND EXCHANGE  COMMISSION. THESE SECURITIES  MAY NOT BE  SOLD NOR MAY
OFFERS TO BUY BE ACCEPTED PRIOR  TO THE TIME THE REGISTRATION STATEMENT  BECOMES
EFFECTIVE.  THIS  PROSPECTUS  SHALL  NOT  CONSTITUTE AN  OFFER  TO  SELL  OR THE
SOLICITATION OF AN OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THESE  SECURITIES
IN  ANY STATE IN WHICH SUCH OFFER,  SOLICITATION OR SALE WOULD BE UNLAWFUL PRIOR
TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF ANY SUCH STATE.
<PAGE>
                   SUBJECT TO COMPLETION, DATED MAY 31, 1996
 
                                2,750,000 SHARES
 
                                     [LOGO]
 
                        AMERICAN DISPOSAL SERVICES, INC.
 
                                  COMMON STOCK
                                 --------------
 
    All of the shares of Common Stock  offered hereby are being issued and  sold
by  American Disposal Services, Inc. (the  "Company"). It is currently estimated
that the initial public offering  price will be between  $12 and $14 per  share.
See "Underwriting" for a discussion of the factors considered in determining the
initial public offering price.
 
    Prior to this offering, there has been no public market for the Common Stock
of  the Company. The Company  has applied to have  the Common Stock approved for
quotation on the Nasdaq National Market under the trading symbol "ADSI."
 
    SEE "RISK FACTORS" ON PAGE 6 FOR  A DISCUSSION OF CERTAIN RISK FACTORS  THAT
SHOULD  BE CONSIDERED  BY PROSPECTIVE PURCHASERS  OF THE SHARES  OF COMMON STOCK
OFFERED HEREBY.
                              -------------------
 
THESE SECURITIES  HAVE  NOT  BEEN  APPROVED OR  DISAPPROVED  BY  THE  SECURITIES
 AND  EXCHANGE  COMMISSION  OR ANY  STATE  SECURITIES COMMISSION,  NOR  HAS THE
   SECURITIES AND  EXCHANGE COMMISSION  OR  ANY STATE  SECURITIES  COMMISSION
     PASSED   UPON   THE   ACCURACY  OR   ADEQUACY   OF   THIS  PROSPECTUS.
      ANY  REPRESENTATION  TO   THE  CONTRARY  IS   A  CRIMINAL   OFFENSE.
<TABLE>
<S>                                 <C>                <C>                <C>
- -------------------------------------------------------------------------------------------
- -------------------------------------------------------------------------------------------
 
<CAPTION>
                                        PRICE TO         UNDERWRITING        PROCEEDS TO
                                         PUBLIC          DISCOUNT (1)        COMPANY (2)
<S>                                 <C>                <C>                <C>
- -------------------------------------------------------------------------------------------
Per Share.........................          $                  $                  $
Total (3).........................          $                  $                  $
- -------------------------------------------------------------------------------------------
- -------------------------------------------------------------------------------------------
</TABLE>
 
(1)  See  "Underwriting"  for  information  concerning  indemnification  of  the
    Underwriters and other information.
 
(2) Before deducting expenses of the  offering payable by the Company  estimated
    at $1,000,000.
 
(3)  The Underwriters  have been granted  an option, exercisable  within 30 days
    from the date hereof, to purchase up to 412,500 additional shares of  Common
    Stock, at the Price to Public per share, less the Underwriting Discount, for
    the  purpose  of  covering  over-allotments,  if  any.  If  the Underwriters
    exercise such  option  in full,  the  total Price  to  Public,  Underwriting
    Discount  and Proceeds  to Company  will be  $             , $           and
    $         , respectively. See "Underwriting."
                              -------------------
 
    The shares of Common Stock are offered  by the Underwriters when, as and  if
delivered to and accepted by them, subject to their right to withdraw, cancel or
reject orders in whole or in part and subject to certain other conditions. It is
expected  that delivery of the certificates representing the shares will be made
against payment on or about             , 1996, at the offices of Oppenheimer  &
Co., Inc., Oppenheimer Tower, World Financial Center, New York, New York 10281.
                              -------------------
OPPENHEIMER & CO., INC.                                          CS FIRST BOSTON
 
               The date of this Prospectus is             , 1996.
<PAGE>
                                  [INSERT MAP]
 
                              -------------------
 
    IN  CONNECTION WITH THIS OFFERING, THE UNDERWRITERS MAY OVER-ALLOT OR EFFECT
TRANSACTIONS WHICH  STABILIZE OR  MAINTAIN  THE MARKET  PRICE OF  THE  COMPANY'S
COMMON  STOCK AT A  LEVEL ABOVE THAT  WHICH MIGHT OTHERWISE  PREVAIL IN THE OPEN
MARKET. SUCH STABILIZING, IF COMMENCED, MAY BE DISCONTINUED AT ANY TIME.
 
    DURING THIS OFFERING, CERTAIN PERSONS AFFILIATED WITH PERSONS  PARTICIPATING
IN THE DISTRIBUTION MAY ENGAGE IN TRANSACTIONS FOR THEIR OWN ACCOUNTS OR FOR THE
ACCOUNTS  OF OTHERS  IN THE COMPANY'S  COMMON STOCK PURSUANT  TO EXEMPTIONS FROM
RULES 10B-6, 10B-7, AND 10B-8 UNDER THE SECURITIES EXCHANGE ACT OF 1934.
 
    The Company intends  to furnish its  stockholders annual reports  containing
financial statements audited by its independent certified public accountants and
quarterly  reports for the  first three quarters of  each fiscal year containing
unaudited financial information.
 
                                       2
<PAGE>
                               PROSPECTUS SUMMARY
 
    THE  FOLLOWING SUMMARY  IS QUALIFIED  IN ITS  ENTIRETY BY  THE MORE DETAILED
INFORMATION AND THE COMPANY'S  CONSOLIDATED FINANCIAL STATEMENTS (INCLUDING  THE
NOTES   THERETO)  APPEARING  ELSEWHERE  IN  THIS  PROSPECTUS.  UNLESS  OTHERWISE
INDICATED,  ALL  FINANCIAL  INFORMATION,  SHARE  AND  PER  SHARE  DATA  IN  THIS
PROSPECTUS:  (I) GIVE EFFECT TO  AN EXCHANGE OF THE  COMPANY'S COMMON STOCK, PAR
VALUE $.01 PER  SHARE ("COMMON STOCK"),  IN CONNECTION WITH  THE FORMATION OF  A
HOLDING COMPANY, EFFECTIVE AS OF JANUARY 1, 1996; (II) GIVE EFFECT TO A 13.5 FOR
1  STOCK SPLIT; (III)  EXCLUDE 1,085,070 SHARES  OF COMMON STOCK  OF THE COMPANY
ISSUABLE UPON  EXERCISE OF  OUTSTANDING  WARRANTS AND  STOCK OPTIONS;  AND  (IV)
ASSUME  NO EXERCISE OF THE UNDERWRITERS'  OVER-ALLOTMENT OPTION. AS USED IN THIS
PROSPECTUS,  THE  TERMS  "COMPANY"   AND  "AMERICAN  DISPOSAL  SERVICES"   REFER
COLLECTIVELY  TO AMERICAN DISPOSAL  SERVICES, INC. AND  ITS SUBSIDIARIES, UNLESS
THE CONTEXT OTHERWISE REQUIRES.
                            ------------------------
 
                                  THE COMPANY
 
    American Disposal Services  is a regional,  integrated, non-hazardous  solid
waste  services  company  that  provides solid  waste  collection,  transfer and
disposal services primarily in  the Midwest. The Company  owns five solid  waste
landfills  and owns, operates  or has exclusive contracts  to receive waste from
seven transfer  stations.  The Company's  landfills  and transfer  stations  are
supported  by its  collection operations,  which serve  over 85,000 residential,
commercial and industrial customers.
 
    The Company began its operations in the Midwest and currently has operations
in Arkansas, Illinois,  Kansas, Missouri, Ohio,  Oklahoma and Pennsylvania.  The
Company  has  adopted  an  acquisition-based  growth  strategy,  and  intends to
continue its expansion in its existing  and proximate markets. A cornerstone  of
the  Company's growth strategy is to  identify and acquire solid waste landfills
located in  secondary  markets  that  are  within  approximately  125  miles  of
significant  metropolitan centers and to secure dedicated waste streams for such
landfills by acquisition or development of transfer stations and acquisition  of
collection  companies. The Company  expects the current  consolidation trends in
the solid waste industry to continue as many independent landfill and collection
operators lack the capital resources, management skills and technical  expertise
necessary to operate in compliance with increasingly stringent environmental and
other  governmental regulations. Due in part  to this consolidation, the Company
believes that significant  opportunities exist to  expand and further  integrate
its  operations in each of its existing markets. Since January 1993, the Company
has acquired 20 solid waste businesses, including four solid waste landfills, 15
solid waste collection companies and one transfer station.
 
    The Company's operating program involves a four-step process: (i)  acquiring
solid waste landfills in its target markets; (ii) securing captive waste streams
for  its landfills through  the acquisition or  development of transfer stations
serving those  markets,  through acquisitions  of  collection companies  and  by
entering   into  long-term  contracts  directly  with  customers  or  collection
companies; (iii)  making  "tuck-in"  acquisitions  of  collection  companies  to
further penetrate its target markets; and (iv) integrating these businesses into
the  Company's  operations to  achieve operating  efficiencies and  economies of
scale. The implementation  of the Company's  operating program is  substantially
complete  in  its  Missouri region  (which  also includes  Arkansas,  Kansas and
Oklahoma), where  the Company  has completed  the acquisition  of 12  collection
companies  and the  acquisition or development  of three  transfer stations. The
Company is in the initial phases of its operating program in the Illinois,  Ohio
and Pennsylvania regions in which the Company began operations in 1995.
 
    The  Company's operating  strategy emphasizes  the integration  of its solid
waste collection  and  disposal  operations and  the  internalization  of  waste
collected.  One  of  the  Company's  goals  is  for  its  captive  waste streams
(including the Company's collection operations and third party haulers operating
under long-term contracts) to provide  in excess of 50%  of the volume of  solid
waste  disposed of at each of its landfills. During the three months ended March
31, 1996, the Company's  captive waste constituted  an average of  approximately
63% of the solid waste disposed of at its landfills.
 
    Each  member of the Company's senior operating management team has worked at
a senior level in the solid waste industry in the Midwest for over 10 years.
 
                                       3
<PAGE>
                                  THE OFFERING
 
<TABLE>
<S>                                 <C>
Common Stock offered..............  2,750,000 shares
Common Stock outstanding after the
 Offering.........................  8,426,901 shares (1)
Use of proceeds...................  Reduction of indebtedness, acquisitions, working capital
                                    and general corporate purposes.
Proposed Nasdaq National Market
 symbol...........................  ADSI
</TABLE>
 
- ------------------------
(1) Does not include 1,085,070 shares of Common Stock issuable upon the exercise
    of warrants and stock options outstanding as of March 31, 1996.
 
                                       4
<PAGE>
                   SUMMARY CONSOLIDATED FINANCIAL INFORMATION
                 (DOLLARS IN THOUSANDS, EXCEPT PER SHARE DATA)
 
<TABLE>
<CAPTION>
                                                                                       PRO FORMA     THREE MONTHS ENDED
                                                         YEAR ENDED DECEMBER 31,       YEAR ENDED         MARCH 31,
                                                     -------------------------------  DECEMBER 31,  ---------------------
                                                       1993       1994       1995       1995 (1)      1995        1996
                                                     ---------  ---------  ---------  ------------  ---------  ----------
<S>                                                  <C>        <C>        <C>        <C>           <C>        <C>
STATEMENT OF OPERATIONS DATA:
Revenues...........................................  $   7,730  $  18,517  $  30,004   $   44,500   $   5,034  $  11,724
Cost of operations.................................      5,750     12,647     17,286       22,330       3,047      6,108
Selling, general and administrative expenses.......      1,646      4,910      5,882        9,493       1,080      1,935
Depreciation and amortization expense..............      1,166      3,226      6,308       13,040         984      2,718
                                                     ---------  ---------  ---------  ------------  ---------  ----------
Operating income (loss)............................       (832)    (2,266)       528         (363)        (77)       963
Interest expense...................................       (417)    (1,497)    (3,030)      (5,314)       (511)    (1,617)
Interest income....................................         35          2        189          189           4         78
                                                     ---------  ---------  ---------  ------------  ---------  ----------
Loss before income taxes and extraordinary item....     (1,214)    (3,761)    (2,313)      (5,488)       (584)      (576)
Income tax benefit (expense).......................        391      1,372       (332)        (332)        156        160
                                                     ---------  ---------  ---------  ------------  ---------  ----------
Loss before extraordinary item.....................       (823)    (2,389)    (2,645)  $   (5,820)       (428)      (416)
                                                                                      ------------
                                                                                      ------------
Extraordinary item -- gain (loss) on early
 retirement of debt................................         74         --       (908)                      --         --
                                                     ---------  ---------  ---------                ---------  ----------
Net loss...........................................       (749)    (2,389)    (3,553)                    (428)      (416)
Preferred stock dividend requirement of
 subsidiary........................................         --         --       (190)                      --        (63)
                                                     ---------  ---------  ---------                ---------  ----------
Net loss to common stockholders....................  $    (749) $  (2,389) $  (3,743)               $    (428) $    (479)
                                                     ---------  ---------  ---------                ---------  ----------
                                                     ---------  ---------  ---------                ---------  ----------
Pro forma net loss per share of common stock.......                                    $     (.96)
                                                                                      ------------
                                                                                      ------------
Pro forma weighted average common stock and common
 stock equivalent shares used to calculate per
 share amounts.....................................                                     6,065,445
                                                                                      ------------
                                                                                      ------------
 
OTHER DATA:
EBITDA (2).........................................  $     334  $     960  $   6,836   $   12,677   $     907  $   3,681
EBITDA margin (3)..................................        4.3%       5.2%      22.8%        28.5%       18.0%      31.4%
</TABLE>
 
<TABLE>
<CAPTION>
                                                                                              MARCH 31, 1996
                                                                                       ----------------------------
                                                                                         ACTUAL     AS ADJUSTED (4)
                                                                                       -----------  ---------------
<S>                                                                                    <C>          <C>
BALANCE SHEET DATA:
Cash and cash equivalents............................................................   $   6,706      $  17,830
Working capital (deficit)............................................................      (9,558)        16,440
Property and equipment, net..........................................................      81,696         81,696
Total assets.........................................................................     115,432        128,555
Long-term debt, net of current portion...............................................      49,006         46,664
Redeemable preferred stock of subsidiary.............................................       1,908             --
Total stockholders' equity...........................................................      33,318         65,566
</TABLE>
 
- ------------------------
(1)  Pro forma information for the year ended December 31, 1995 gives effect  to
     the   CDI  Acquisition  (as  defined   in  "The  Company")  and  borrowings
     outstanding under  the Credit  Facility  (as defined  in "Risk  Factors  --
     Significant  Leverage") and the application  of the net proceeds therefrom,
     as if each of the  foregoing had occurred or been  in effect on January  1,
     1995.  See the Pro  Forma Consolidated Statement  of Operations and related
     notes included elsewhere herein.
 
(2)  EBITDA represents  operating  income plus  depreciation  and  amortization.
     While  EBITDA data  should not be  construed as a  substitute for operating
     income, net income (loss)  or cash flows from  operations in analyzing  the
     Company's  operating performance,  financial position  and cash  flows, the
     Company has included  EBITDA data  (which are  not a  measure of  financial
     performance  under  generally  accepted accounting  principles)  because it
     understands that  such  data are  commonly  used by  certain  investors  to
     evaluate a company's performance in the solid waste industry.
 
(3)  EBITDA margin represents EBITDA expressed as a percentage of revenues.
 
(4)  Adjusted to give effect to borrowings outstanding under the Credit Facility
     and  the application  of the  net proceeds therefrom,  and the  sale of the
     Common Stock  offered  hereby and  the  application of  the  estimated  net
     proceeds therefrom as described in "Use of Proceeds." See "Capitalization."
 
                                       5
<PAGE>
                                  RISK FACTORS
 
    AN INVESTMENT IN THE SHARES OF COMMON STOCK BEING OFFERED BY THIS PROSPECTUS
INVOLVES   A  HIGH  DEGREE  OF  RISK.  IN  ADDITION,  THIS  PROSPECTUS  CONTAINS
FORWARD-LOOKING STATEMENTS  THAT INVOLVE  RISKS AND  UNCERTAINTIES.  DISCUSSIONS
CONTAINING  SUCH FORWARD-LOOKING  STATEMENTS MAY  BE FOUND  IN THE  MATERIAL SET
FORTH UNDER "PROSPECTUS SUMMARY,"  "RISK FACTORS," "MANAGEMENT'S DISCUSSION  AND
ANALYSIS  OF  FINANCIAL  CONDITION  AND  RESULTS  OF  OPERATIONS,"  "BUSINESS --
INTRODUCTION,"  "BUSINESS  --  INDUSTRY  BACKGROUND,"  "BUSINESS  --  STRATEGY,"
"BUSINESS  -- ACQUISITION  PROGRAM," "BUSINESS  -- OPERATIONS"  AND "BUSINESS --
ENVIRONMENTAL REGULATIONS" AS WELL AS IN THE PROSPECTUS GENERALLY. THE COMPANY'S
ACTUAL  RESULTS  COULD  DIFFER  MATERIALLY  FROM  THOSE  ANTICIPATED  IN   THESE
FORWARD-LOOKING  STATEMENTS AS A RESULT OF  CERTAIN FACTORS, INCLUDING THOSE SET
FORTH  IN  THE  FOLLOWING  RISK  FACTORS  AND  ELSEWHERE  IN  THIS   PROSPECTUS.
ACCORDINGLY,  PROSPECTIVE INVESTORS SHOULD CONSIDER CAREFULLY THE FOLLOWING RISK
FACTORS, IN ADDITION  TO THE OTHER  INFORMATION CONCERNING THE  COMPANY AND  ITS
BUSINESS  CONTAINED IN THIS  PROSPECTUS, BEFORE PURCHASING  THE SHARES OF COMMON
STOCK OFFERED HEREBY.
 
ABILITY TO MANAGE GROWTH
 
    The Company's goal is to increase the scale of its operations  significantly
through  the acquisition  of other solid  waste businesses  and through internal
growth. Consequently, the Company  may experience periods  of rapid growth  with
significantly  increased staffing level requirements.  Such growth could place a
significant strain on the Company's management and on its operational, financial
and other resources.  The Company's ability  to maintain and  manage its  growth
effectively  will  require  it  to develop  its  management  information systems
capabilities and improve  its operational  and financial  systems and  controls.
Moreover,  the Company will need to  attract, train, motivate, retain and manage
its senior managers, technical professionals and other employees. Any failure to
expand its management information system capabilities, to implement and  improve
its  operational and  financial systems and  controls or  to recruit appropriate
additional personnel  in an  efficient  manner at  a  pace consistent  with  the
Company's  business growth would have a material adverse effect on the Company's
business, financial condition and results of operations.
 
AVAILABILITY OF ACQUISITION TARGETS; INTEGRATION OF FUTURE ACQUISITIONS
 
    The  Company's  ongoing  acquisition  program  is  a  key  element  of   its
acquisition-based  growth  strategy  for expanding  its  solid  waste management
services. Consequently, the future growth of  the Company depends in large  part
upon  the successful continuation  of this acquisition  program. The Company may
encounter substantial competition in its efforts to acquire landfills,  transfer
stations  and collection companies.  There can be no  assurance that the Company
will succeed  in locating  or acquiring  appropriate acquisition  candidates  at
price levels and on terms and conditions that the Company considers appropriate.
In  addition, if in the  future the Company is  successful in acquiring targeted
companies, it will need to integrate these acquired companies into the Company's
operations. There  can  be  no  assurance that  the  Company  will  successfully
integrate  future acquisitions into its  operations. See "Business -- Strategy,"
"-- Acquisition Program" and "-- Competition."
 
LIMITED OPERATING HISTORY; HISTORY OF LOSSES
 
    Following the  Exchange (as  defined in  "The Company"),  the Company  began
operating  as a consolidated  entity effective as  of January 1,  1996. Prior to
1996, the Company's operations were conducted by ADS, Inc. and County  Disposal,
Inc.,  two subsidiaries of the Company, the operations of which were acquired by
the Company's  stockholders in  1993 and  1995, respectively.  Accordingly,  the
Company has a limited history of operating as a consolidated entity. The Company
has  recorded net losses to common  stockholders of approximately $749,000, $2.4
million and $3.6 million during the  fiscal years ended December 31, 1993,  1994
and  1995,  respectively.  Since  January  1993,  the  Company  has  acquired 20
companies (three  of  which were  acquired  after  December 31,  1995).  The  17
companies  acquired  prior to  December  31, 1995  collectively  comprised $29.6
million, or 98.7%, of the Company's revenues in the year ended December 31, 1995
and $113.4 million, or  98.3%, of the  Company's assets at  March 31, 1996.  See
"Business  --  Acquisition  Program."  The  financial  position  and  results of
operations of the Company will depend to a large extent on the Company's ability
to  integrate  these  acquired  operations  effectively,  to  realize   expected
efficiencies  and economies of scale and  to conduct its operations successfully
as a consolidated entity. There can  be no assurance that the Company's  efforts
to    integrate   these   operations   will    be   effective,   that   expected
 
                                       6
<PAGE>
efficiencies and economies of scale will be realized or that the Company will be
able to consolidate successfully its operations.  The failure to achieve any  of
these  results could have  a material adverse effect  on the Company's business,
financial condition and results of operations.
 
SIGNIFICANT LEVERAGE
 
    The Company has  incurred significant  debt obligations  in connection  with
financing  its acquisitions and business growth. In May 1996 the Company entered
into an $87 million revolving credit and term loan facility with  Internationale
Nederlanden  (U.S.)  Capital Corporation,  as  administrative agent,  and Morgan
Guaranty Trust  Company  of  New  York,  as  documentation  agent  (the  "Credit
Facility").  As of March  31, 1996, the  Company's consolidated indebtedness was
$67.6 million,  its  consolidated  total  assets were  $115.4  million  and  its
stockholders'  equity was  $33.3 million  (or $48.5,  $128.6 and  $65.6 million,
respectively, as adjusted  to give  effect to borrowings  outstanding under  the
Credit  Facility and the application of the net proceeds therefrom, and the sale
of the Common  Stock offered  hereby and the  application of  the estimated  net
proceeds  therefrom  as described  under "Use  of  Proceeds"). During  the three
months ended March 31,  1996, the Company's  operating income plus  depreciation
and  amortization ("EBITDA") was $3.7 million,  and interest expense during this
period was  $1.6  million.  The  Company's ability  to  meet  its  debt  service
obligations   and  to  reduce  its  total  debt  will  depend  upon  its  future
performance, which, in turn, will be subject to general economic conditions  and
to  financial,  business  and  other factors  affecting  the  operations  of the
Company, many of which are beyond the Company's control. If the Company fails to
generate sufficient cash flow to repay its debt, the Company may be required  to
refinance  all  or  a portion  of  its  existing debt  or  to  obtain additional
financing. There can  be no assurance  that such refinancing  or any  additional
financing  could be obtained  on terms favorable  to the Company  or at all. See
"Management's Discussion  and Analysis  of Financial  Condition and  Results  of
Operations -- Liquidity and Capital Resources."
 
COMPETITION
 
    The  solid waste collection and disposal  business is highly competitive and
requires substantial  amounts of  capital. The  Company competes  with  numerous
solid  waste management  companies, many of  which are  significantly larger and
have greater financial  resources than  the Company. The  Company also  competes
with  those  counties, municipalities  and solid  waste districts  that maintain
their  own   waste  collection   and   disposal  operations.   These   counties,
municipalities  and solid waste  districts may have  financial advantages due to
the availability to them of user fees,  charges or tax revenues and the  greater
availability  to  them of  tax-exempt  financing. In  addition,  competitors may
reduce the price of their services in an effort to expand market share or to win
competitively bid  municipal  contracts. There  can  be no  assurance  that  the
Company will be able to compete successfully. See "Business -- Competition."
 
CAPITAL REQUIREMENTS AND LIMITED WORKING CAPITAL
 
    The  Company's acquisition-based  growth strategy  has resulted  in a steady
increase in its  capital requirements,  and such  increase may  continue in  the
future  as the  Company pursues its  strategy. The Company  has incurred working
capital deficits in the past, and there  can be no assurance that its  available
working  capital  will be  sufficient in  the  future as  it pursues  its growth
strategy. At  March 31,  1996, the  Company  had a  working capital  deficit  of
approximately $9.6 million. For calendar year 1996, the Company expects to spend
approximately   $13  million  for  capital  expenditures.  To  the  extent  that
internally generated  cash, the  cash  available to  the  Company from  the  net
proceeds  of the Offering and  cash available under the  Credit Facility are not
sufficient  to  provide  the  cash  required  for  future  operations,   capital
expenditures,  acquisitions, debt repayment  obligations and financial assurance
obligations, the Company  will require  additional equity or  debt financing  in
order  to  provide such  cash. There  can  be no  assurance, however,  that such
financing will be available or, if  available, will be on terms satisfactory  to
the Company. Where appropriate, the Company may seek to minimize the use of cash
to  finance its acquisitions by using  capital stock, assumption of indebtedness
or notes. However, there can  be no assurance the  owners of the businesses  the
Company  may wish to acquire will be willing to accept non-cash consideration in
whole or  in  part.  See  "Management's Discussion  and  Analysis  of  Financial
Condition  and Results  of Operations  -- Liquidity  and Capital  Resources" and
"Business -- Acquisition Program."
 
                                       7
<PAGE>
DEPENDENCE ON THIRD PARTY COLLECTION OPERATIONS
 
    A portion  of  the solid  waste  delivered  to the  Company's  landfills  is
delivered  by third  party collection  companies under  informal arrangements or
without  long-term  contracts.  If   these  third  parties  discontinued   their
arrangements  with the Company and  if the Company were  unable to replace these
third party  arrangements without  incurring significant  additional costs,  the
Company's  business,  financial condition  and  results of  operations  might be
materially adversely affected.
 
LIMITATIONS ON EXPANSION
 
    The Company's operating program depends on its ability to expand and develop
its landfills,  transfer  stations and  collection  operations. The  process  of
obtaining  permits  to  operate or  expand  solid waste  landfills  and transfer
stations has become increasingly difficult  and expensive, often taking  several
years, requiring numerous hearings and compliance with zoning, environmental and
other regulatory measures, and often being subject to resistance from citizen or
other  groups. There can be no assurance  that the Company will be successful in
obtaining the permits it requires or that such permits will not contain  onerous
terms and conditions. An inability to receive such permits could have a material
adverse  effect on  the Company's business,  financial condition  and results of
operations. See "-- Extensive Environmental and Land Use Laws and  Regulations."
In  some areas, suitable land  may be unavailable for  new landfill sites. There
can be  no  assurance that  the  Company will  be  successful in  obtaining  new
landfill sites or expanding the permitted capacity of its current landfills once
its  landfill capacity has  been consumed. In  such event, the  Company could be
forced to dispose of collected waste  at landfills operated by its  competitors,
which  could have a  material adverse effect on  the Company's landfill revenues
and collection expenses. See "Business -- Operations -- Landfills."
 
EXTENSIVE ENVIRONMENTAL AND LAND USE LAWS AND REGULATIONS
 
    The Company is subject to extensive and evolving environmental and land  use
laws  and regulations, which have become  increasingly stringent in recent years
as a  result  of greater  public  interest in  protecting  and cleaning  up  the
environment.  These laws and  regulations affect the  Company's business in many
ways, including as set forth below. See "Business -- Environmental  Regulations"
for further information concerning the matters set forth below.
 
    EXTENSIVE  PERMITTING  REQUIREMENTS.   In  order  to develop  and  operate a
landfill or other solid waste management facility, it is necessary to obtain and
maintain  in  effect  one  or  more  facility  permits  and  other  governmental
approvals,  including those  related to zoning,  environmental and  land use. In
addition, the Company may be required to obtain similar permits and approvals in
order to expand  its existing  landfill and solid  waste management  operations.
These  permits and approvals are difficult and  time consuming to obtain and are
frequently subject to community opposition, opposition by various local  elected
officials  or citizens and other uncertainties.  In addition, after an operating
permit for a landfill or other facility  is obtained, the permit may be  subject
to  modification or revocation by the issuing agency, and it may be necessary to
obtain periodically a renewal of the permit, which may reopen opportunities  for
opposition  to the permit. Moreover, from  time to time, regulatory agencies may
delay the review or grant of these  required permits or approvals or may  modify
the  procedures or  increase the stringency  of the standards  applicable to its
review or grant of such permits or  approvals. In addition, the Company may  not
be  able to ensure that  its landfill operations are  included and remain in the
solid waste management plan of the state or county in which such operations  are
conducted.  The Company may also have  difficulty obtaining host agreements with
counties  or  local  communities,  or  existing  host  communities  may   demand
modifications of existing host agreements in connection with planned expansions,
either of which could increase the Company's costs and reduce its margins. There
can  be  no assurance  that  the Company  will  be successful  in  obtaining and
maintaining in  effect the  permits and  approvals required  for the  successful
operation  and growth of  its business, including  permits or approvals required
for planned landfill  expansions, and the  failure by the  Company to obtain  or
maintain  in  effect  a  permit significant  to  its  business  could materially
adversely affect  the Company's  business, financial  condition and  results  of
operations. See "Management's Discussion and Analysis of Financial Condition and
Results of Operations -- Liquidity and Capital Resources."
 
                                       8
<PAGE>
    DESIGN,  OPERATION  AND CLOSURE  REQUIREMENTS.   The  design,  operation and
closure of landfills  are subject  to extensive  regulations. These  regulations
include,   among  others,   the  regulations  (the   "Subtitle  D  Regulations")
establishing  minimum  federal  requirements   adopted  by  the  United   States
Environmental  Protection Agency (the "EPA") in October 1991 under Subtitle D of
the Resource Conservation  and Recovery  Act of  1976 ("RCRA").  The Subtitle  D
Regulations  generally became effective  on October 9,  1993 (except for certain
municipal solid waste  landfills accepting  less than 100  tons per  day, as  to
which  the  effective  date  was  April 9,  1994,  and  new  financial assurance
requirements, which  are  scheduled to  become  effective April  9,  1997).  The
Subtitle  D  Regulations  require  all  states  to  adopt  regulations regarding
landfill design, operation and closure requirements that are as stringent as, or
more stringent  than,  the Subtitle  D  Regulations.  All states  in  which  the
Company's  landfills are  located have  in place  extensive landfill regulations
consistent with the Subtitle D requirements. These federal and state regulations
require the  Company  to  design  the  landfill  in  accordance  with  stringent
technical  requirements,  monitor  groundwater, post  financial  assurances, and
fulfill landfill closure and  post-closure obligations. These regulations  could
also  require the  Company to  undertake investigatory,  remedial and monitoring
activities, to  curtail  operations  or  to  close  a  landfill  temporarily  or
permanently.  Furthermore, future changes  in these regulations  may require the
Company to modify, supplement, or replace equipment or facilities at costs which
may be substantial.
 
    LEGAL AND  ADMINISTRATIVE  PROCEEDINGS.    In the  ordinary  course  of  its
business,   the  Company  may  become  involved   in  a  variety  of  legal  and
administrative proceedings  relating  to land  use  and environmental  laws  and
regulations.  These may include proceedings by  federal, state or local agencies
seeking to impose civil or criminal  penalties on the Company for violations  of
such  laws and  regulations, or  to impose  liability on  the Company  under the
Comprehensive Environmental Response,  Compensation, and Liability  Act of  1980
("CERCLA")  or comparable  state statutes,  or to  revoke or  deny renewal  of a
permit; actions brought by citizens' groups, adjacent landowners or governmental
entities opposing  the  issuance of  a  permit or  approval  to the  Company  or
alleging  violations of  the permits pursuant  to which the  Company operates or
laws or regulations  to which  the Company is  subject; and  actions seeking  to
impose  liability on  the Company for  any environmental damage  at its landfill
sites or that  its landfills  or other properties  may have  caused to  adjacent
landowners  or others, including groundwater  or soil contamination. The Company
could incur substantial legal expenses  during the course of the  aforementioned
proceedings,  and the adverse outcome of one  or more of these proceedings could
materially adversely  affect the  Company's  business, financial  condition  and
results of operations. See "Business -- Legal Proceedings."
 
    During  the ordinary course of its operations,  the Company has from time to
time received,  and expects  that it  may in  the future  receive, citations  or
notices  from governmental authorities that its operations are not in compliance
with its  permits or  certain  applicable environmental  or  land use  laws  and
regulations. The Company generally seeks to work with the authorities to resolve
the  issues raised  by such  citations or  notices. There  can be  no assurance,
however, that the  Company will  always be successful  in this  regard, and  the
failure  to  resolve a  significant issue  could result  in one  or more  of the
adverse  consequences   to  the   Company  described   below  under   "Potential
Liabilities."
 
    POTENTIAL  LIABILITIES.   There may be  various adverse  consequences to the
Company in the  event that a  facility owned or  operated by the  Company (or  a
predecessor  owner or operator  whose liabilities the  Company may have acquired
expressly or under successor liability theories) causes environmental damage, in
the event  that waste  transported  by the  Company  (or a  predecessor)  causes
environmental  damage at another site, in the event that the Company fails (or a
predecessor failed) to comply  with applicable environmental  and land use  laws
and  regulations or the terms of a permit or outstanding consent order or in the
event the  Company's owned  or  operated facility  or  the soil  or  groundwater
thereunder  is  or becomes  contaminated. These  may  include the  imposition of
substantial monetary  penalties  on  the  Company;  the  issuance  of  an  order
requiring the curtailment or termination of the operations involved or affected;
the  revocation or denial of permits  or other approvals necessary for continued
operation or landfill expansion; the imposition  of liability on the Company  in
respect   of   any   environmental  damage   (including   groundwater   or  soil
contamination) at its landfill sites or  that its landfills or other  facilities
or  other Company-owned or operated facilities  caused to adjacent landowners or
others or environmental damage at another site associated with waste transported
by  the   Company;  the   imposition   of  liability   on  the   Company   under
 
                                       9
<PAGE>
CERCLA or under comparable state laws; and criminal liability for the Company or
its  officers.  Any  of  the foregoing  could  materially  adversely  affect the
Company's business, financial condition and results of operations.
 
    As described  under  "Business  -- Environmental  Regulations,"  CERCLA  and
analogous  state laws impose  retroactive strict joint  and several liability on
various parties that are, or have been, associated with a site from which  there
has  been, or is threatened, a release of any hazardous substance (as defined by
CERCLA) into the environment. Liability  under RCRA, CERCLA and analogous  state
laws  may include responsibility for costs of site investigations, site cleanup,
natural resources damages and property  damages. Liabilities under RCRA,  CERCLA
and  analogous  state laws  can be  very  substantial and,  if imposed  upon the
Company, could  materially adversely  affect the  Company's business,  financial
condition and results of operations.
 
    In  the ordinary course of its  landfill and waste management operations and
in connection with its review of  landfill and other operations to be  acquired,
the  Company  has discovered,  and may  in the  future discover,  indications of
groundwater contamination  at certain  landfills. In  such events,  the  Company
would  seek or be required to determine  the magnitude and source of the problem
and, if  appropriate  or  required  by applicable  regulations,  to  design  and
implement  measures to remedy,  or halt the spread  of, the contamination. There
can be no assurance, however, that contamination discovered at a landfill or  at
other  Company sites will not result in  one or more of the adverse consequences
to the Company described above.
 
    TYPE, QUANTITY AND SOURCE  LIMITATIONS.  Certain  permits and approvals  may
limit  the types of waste that may be  accepted at a landfill or the quantity of
waste that  may  be accepted  at  a landfill  during  a given  time  period.  In
addition,  certain permits  and approvals,  as well  as certain  state and local
regulations, may  limit  a landfill  to  accepting waste  that  originates  from
specified  geographic areas or seek to  restrict the importation of out-of-state
waste  or  otherwise   discriminate  against   out-of-state  waste.   Generally,
restrictions  on  the  importation  of  out-of-state  waste  have  not withstood
judicial challenge. However, from time  to time federal legislation is  proposed
which  would allow  individual states to  prohibit the  disposal of out-of-state
waste or to limit the  amount of out-of-state waste  that could be imported  for
disposal  and would require  states, under certain  circumstances, to reduce the
amounts of waste exported to other states. Although such legislation has not yet
been adopted by Congress, if this  or similar legislation is enacted, states  in
which  the  Company  operates  landfills  could act  to  limit  or  prohibit the
importation of out-of-state waste. Such state actions could materially adversely
affect landfills within those states that receive a significant portion of waste
originating from out-of-state.
 
    In addition, certain states and localities may for economic or other reasons
restrict the exportation  of waste  from their  jurisdiction or  require that  a
specified   amount  of  waste   be  disposed  of   at  facilities  within  their
jurisdiction. In 1994,  the United States  Supreme Court held  unconstitutional,
and  therefore invalid, a local ordinance that sought to impose flow controls on
taking waste out of the locality. However, certain state and local jurisdictions
continue to seek to enforce such restrictions and, in certain cases, the Company
may elect not to challenge such restrictions based upon various  considerations.
In  addition, the aforementioned proposed federal legislation would allow states
and localities to impose certain  flow control restrictions. These  restrictions
could  result in the volume of waste going to landfills being reduced in certain
areas, which may materially  adversely affect the  Company's ability to  operate
its  landfills  at their  full capacity  and/or  affect the  prices that  can be
charged 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, the  Company's
business,  financial  condition and  results of  operations could  be materially
adversely affected.
 
POTENTIAL LIABILITIES ASSOCIATED WITH ACQUISITIONS
 
    Although the  Company performs  an investigation  of each  business that  it
acquires,  there  may  nevertheless  be liabilities  that  the  Company  has not
discovered or  may be  unable to  discover, including  liabilities arising  from
environmental contamination or non-compliance by prior owners with environmental
laws  or  regulatory requirements,  and for  which the  Company, as  a successor
owner, may be  responsible. The Company  seeks to minimize  the impact of  these
liabilities    by    obtaining    indemnities    and    warranties    from   the
 
                                       10
<PAGE>
seller which  may be  supported  by deferring  payment  of, or  depositing  into
escrow,  a  portion  of  the  purchase  price.  However,  these  indemnities and
warranties, if  obtained, may  not  fully cover  the  liabilities due  to  their
limited  scope, amount, or duration, the financial limitations of the indemnitor
or warrantor, or other reasons.
 
DEPENDENCE ON SENIOR MANAGEMENT
 
    The Company is highly dependent on  its senior management team. The loss  of
the  services of  any member  of senior management  may have  a material adverse
effect on the Company's business, financial condition and results of operations.
In an effort  to minimize  this risk, the  Company has  entered into  employment
contracts  with  certain  members of  senior  management. The  Company  does not
maintain "key man" life insurance with  respect to members of senior  management
except for a $2.0 million policy maintained on the Company's President.
 
LIMITS ON INSURANCE COVERAGE
 
    There  can be no assurance that  the Company's pollution liability insurance
will provide sufficient coverage in the  event an environmental claim were  made
against  the Company or that the Company will  be able to maintain in place such
insurance at reasonable costs. An uninsured or underinsured claim of  sufficient
magnitude  could  have  a material  adverse  effect on  the  Company's business,
financial condition  and  results  of operations.  See  "Business  --  Liability
Insurance and Bonding."
 
CAPITALIZED EXPENDITURES
 
    In  accordance with  generally accepted  accounting principles,  the Company
capitalizes certain expenditures and advances relating to acquisitions,  pending
acquisitions   and  landfill   development  and   expansion  projects.  Indirect
acquisition costs,  such  as  executive salaries,  general  corporate  overhead,
public  affairs  and other  corporate services,  are  expensed as  incurred. The
Company's policy  is  to charge  against  earnings any  unamortized  capitalized
expenditures and advances (net of any portion thereof that the Company estimates
will  be recoverable, through sale or  otherwise) relating to any operation that
is permanently shut down, any pending  acquisition that is not consummated,  and
any  landfill development or expansion project that is not or not expected to be
successfully completed. Therefore, the Company may be required to incur a charge
against earnings in future periods,  which charge, depending upon the  magnitude
thereof,  could materially  adversely affect  the Company's  business, financial
condition and results of operations.  See "Management's Discussion and  Analysis
of  Financial  Condition  and Results  of  Operations --  Liquidity  and Capital
Resources" for  a  discussion of  capitalized  expenditures in  connection  with
certain operations and projects.
 
ALTERNATIVES TO LANDFILL DISPOSAL
 
    Alternatives  to landfill  disposal, such  as recycling  and composting, are
increasingly being used. In addition, incineration is an alternative to landfill
disposal in certain of the Company's markets. There also has been an  increasing
trend  at the state and local levels to mandate recycling and waste reduction at
the source and to prohibit the disposal of certain type of wastes, such as  yard
wastes, at landfills. These developments may result in the volume of waste going
to  landfills being  reduced in  certain areas,  which may  affect the Company's
ability to operate  its landfills at  their full capacity  or affect the  prices
that  can be charged for landfill disposal services. For example, Illinois, Ohio
and Pennsylvania, states in which  the Company operates landfills, have  adopted
bans  on the  disposal of  yard waste  or leaves  in landfills  located in those
states, and  all of  the states  in which  the Company  operates landfills  have
adopted  rules  restricting  or  limiting disposal  of  tires  at  landfills. In
addition, each of the states in which the Company operates landfills has adopted
plans or requirements which set goals for specified percentages of certain solid
waste items to be recycled. These recycling  goals are being phased in over  the
next  few years.  These alternatives, if  and when adopted  and implemented, may
have a material adverse effect on the business, financial condition and  results
of  operations of  the Company.  See "Business  -- Environmental  Regulations --
State and Local Regulations."
 
FINANCIAL ASSURANCE OBLIGATIONS
 
    The Company is  required to  post a  performance bond  or a  bank letter  of
credit  or  to provide  other forms  of financial  assurance in  connection with
closure   and    post-closure   obligations    with   respect    to    landfills
 
                                       11
<PAGE>
or  its other solid waste  management operations and may  be required to provide
such financial  assurance in  connection with  municipal residential  collection
contracts.  As of March 31, 1996,  the Company had outstanding approximately $15
million of performance bonds  and $90,000 in letters  of credit. If the  Company
were  unable to obtain surety bonds or  letters of credit in sufficient amounts,
or to provide other required forms of financial assurance, it would be unable to
remain in  compliance  with  the  Subtitle D  Regulations  or  comparable  state
requirements  and, among  other things,  might be  precluded from  entering into
certain  municipal  collection  contracts  and  obtaining  or  holding  landfill
operating  permits.  See  "Management's  Discussion  and  Analysis  of Financial
Condition and  Results of  Operations --  Liquidity and  Capital Resources"  and
"Business -- Liability Insurance and Bonding."
 
SEASONALITY
 
    The  Company's revenues tend to be somewhat lower in the winter months. This
is primarily attributable to the fact that: (i) the volume of waste relating  to
construction  and  demolition activities  tends to  increase  in the  spring and
summer months; and (ii)  the volume of industrial  and residential waste in  the
regions  where the Company operates tends  to decrease during the winter months.
In addition, particularly harsh weather conditions may delay the development  of
landfill capacity and otherwise result in the temporary suspension of certain of
the  Company's operations  and could  materially adversely  affect the Company's
overall business, financial condition and results of operations.
 
CONTROL BY EXISTING STOCKHOLDERS
 
    Immediately following  the Offering,  the Company's  principal  stockholders
will  beneficially  own  approximately  60% of  the  outstanding  shares  of the
Company's Common Stock. See "Principal Stockholders." As a result, such  persons
will  have  the  ability  to exercise  significant  influence  over  all matters
requiring stockholder approval, such as  the election of directors, mergers  and
acquisitions.  Such a high level  of ownership by such  persons and entities may
have a  significant effect  in delaying,  deferring or  preventing a  change  in
control of the Company.
 
ANTI-TAKEOVER PROVISIONS
 
    The  Board of Directors may issue up  to 5,000,000 shares of Preferred Stock
in the  future without  stockholder approval  upon such  terms as  the Board  of
Directors  may determine.  The rights  of the  holders of  Common Stock  will be
subject to, and may be adversely affected  by, the rights of the holders of  any
Preferred  Stock that  may be  issued in the  future. The  issuance of Preferred
Stock, while providing flexibility in connection with possible acquisitions  and
other  corporate purposes,  could have  the effect  of delaying  or preventing a
change in control of the Company without further action by the stockholders. The
Company has  no  present plans  to  issue any  shares  of Preferred  Stock.  See
"Description  of Capital  Stock --  Undesignated Preferred  Stock." In addition,
following the  Offering the  Company will  become subject  to the  anti-takeover
provisions  of Section 203  of the Delaware General  Corporation Law, which will
prohibit  the  Company  from  engaging  in  a  "business  combination"  with  an
"interested  stockholder" for  a period  of three  years after  the date  of the
transaction in which  the person  became an interested  stockholder, unless  the
business  combination is  approved in  a prescribed  manner. The  application of
Section 203 also could  have the effect  of delaying or  preventing a change  of
control  of the  Company. See  "Description of  Capital Stock  -- Delaware Anti-
Takeover Law and Certain Charter Provisions."
 
NO PRIOR TRADING MARKET FOR COMMON STOCK; POTENTIAL VOLATILITY OF STOCK PRICE
 
    Prior to the Offering, there has been no public market for the Common Stock,
and there can be no assurance that  an active trading market will develop or  be
sustained  after  the  Offering.  The  initial  public  offering  price  will be
determined through negotiations between the Company, and the representatives  of
the  Underwriters based  on several  factors and  may not  be indicative  of the
market price of  the Common Stock  after the Offering.  See "Underwriting."  The
market  price of the shares of Common Stock may be highly volatile and is likely
to be affected  by factors  such as actual  or anticipated  fluctuations in  the
Company's  operating results, announcements of new contracts by the Company, its
competitors or  their customers,  government regulatory  action, general  market
conditions   and  other  factors.  In  addition,   the  stock  market  has  from
time-to-time experienced  significant price  and volume  fluctuations that  have
particularly  affected the  market prices  for the  common stock  of solid waste
disposal companies and that have often been unrelated to
 
                                       12
<PAGE>
the  operating  performance   of  particular  companies.   These  broad   market
fluctuations  may also adversely affect the market price of the Company's Common
Stock. In the past,  following periods of  volatility in the  market price of  a
company's  securities, securities  class action litigation  has occurred against
the issuing company.  There can be  no assurance that  such litigation will  not
occur in the future with respect to the Company. Such litigation could result in
substantial costs and a diversion of management's attention and resources, which
could  have  a  material adverse  effect  on the  Company's  business, financial
condition  and  results  of  operations.  Any  adverse  determination  in   such
litigation could also subject the Company to significant liabilities.
 
IMMEDIATE AND SUBSTANTIAL DILUTION
 
    The  assumed initial public offering price  is substantially higher than the
net tangible book value per share  of Common Stock. Investors purchasing  shares
of  Common Stock in the Offering  will therefore incur immediate and substantial
net tangible book value dilution. To the extent that stock options and  warrants
(currently outstanding or subsequently granted) to purchase the Company's Common
Stock are exercised, there may be further dilution. See "Dilution."
 
SHARES ELIGIBLE FOR FUTURE SALE; POSSIBLE ADVERSE EFFECT ON FUTURE MARKET PRICE
 
    Sale  of substantial amounts of shares in  the public market or the prospect
of such sales could  adversely affect the market  price of the Company's  Common
Stock.  Upon  completion  of the  Offering,  the Company  will  have outstanding
8,426,901 shares of Common Stock, of  which the 2,750,000 shares offered  hereby
will  be freely tradeable.  All other outstanding shares  are subject to lock-up
agreements under which the  holders of such  shares have agreed  not to sell  or
otherwise dispose of any of their shares for a period of 180 days after the date
of  this Prospectus without the prior written consent of Oppenheimer & Co., Inc.
In its sole discretion and at any  time without notice, Oppenheimer & Co.,  Inc.
may  release all or any portion of  the shares subject to lock-up agreements. In
addition, following 180 days after the Offering, the holders of 5,032,861 shares
of Common Stock  and warrants to  purchase 215,455 shares  of Common Stock  have
demand  and "piggy-back" rights with respect  to the registration of such shares
of Common Stock for  sale to the  public. If such  holders, by exercising  their
registration  rights, cause a  large number of  shares to be  sold in the public
market, such sales  could have an  adverse effect  on the market  price for  the
Company's  Common Stock. In addition, if the Company is required to include such
shares in Company-initiated registration statements, this could have an  adverse
effect  on the Company's  ability to raise needed  capital. See "Shares Eligible
for Future Sale" and "Underwriting." The Company intends to file a  registration
statement  under the Securities Act of  1933, as amended (the "Securities Act"),
upon completion of  the Offering  or shortly  thereafter, covering  the sale  of
1,100,000  shares of Common Stock reserved for issuance under the Company's 1996
Stock Option Plan. Upon  completion of the Offering,  there will be  outstanding
options  to purchase a total  of 869,615 shares of  Common Stock and warrants to
purchase a total  of 215,455  shares of Common  Stock. See  "Management --  1996
Stock Option Plan."
 
DIVIDEND POLICY
 
    The  Company has never  declared or paid  dividends on its  Common Stock and
does not anticipate paying  dividends in the  foreseeable future. See  "Dividend
Policy."
 
                                       13
<PAGE>
                                  THE COMPANY
 
    American  Disposal Services, Inc. was incorporated  in the State of Delaware
in November 1995. The Company is the sole stockholder of ADS, Inc., an  Oklahoma
corporation  that was formed in January 1991 ("ADS"), and County Disposal, Inc.,
a Delaware  corporation that  was  formed in  April  1995 ("CDI").  The  Company
acquired  all the  shares of the  common stock of  ADS and CDI,  effective as of
January 1, 1996, in exchange for which the previous stockholders of ADS and  CDI
received  shares of the Company's Common Stock  (the "Exchange"). As part of the
Exchange, all options and warrants that  had previously been granted by ADS  and
CDI  were cancelled in exchange for options and warrants granted by the Company.
In addition, effective as  of May 31, 1996,  the Company completed a  13.5-for-1
stock  split of the Company's Common Stock (the "Stock Split"; together with the
Exchange, the "Restructuring").
 
    In January  1993,  affiliates  of  Charterhouse  Group  International,  Inc.
("Charterhouse") acquired a majority interest in ADS, the primary asset of which
was  the Pittsburg County landfill near  McAlester, Oklahoma. In connection with
the Charterhouse investment,  ADS recruited the  Company's President in  January
1993,  and assembled the balance of the Company's senior management team between
1993 and 1995. As  a result of the  management team's substantial experience  in
the  solid waste  industry and the  financial expertise and  capital provided by
Charterhouse, the  Company  was able  to  finance its  acquisition-based  growth
strategy, which from the outset focused on the identification and acquisition of
solid  waste landfills  located in secondary  markets. Using  this strategy, CDI
acquired three landfills in  Illinois, Ohio and Pennsylvania  in 1995 (the  "CDI
Acquisition").  Since  January 1993,  the Company  has  acquired 20  solid waste
businesses, including  four solid  waste landfills,  15 solid  waste  collection
companies and one transfer station.
 
    The  Company's  principal executive  offices are  located at  745 McClintock
Drive, Suite 305, Burr Ridge, Illinois 60521, and its telephone number is  (708)
655-1105.
 
                                USE OF PROCEEDS
 
    The  net proceeds to the  Company from the sale  of the Common Stock offered
hereby, assuming an  initial public offering  price of $13.00  per share,  after
deducting  underwriting discounts and offering  expenses payable by the Company,
are estimated to be approximately $32.2 million (approximately $37.2 million  if
the  Underwriters'  over-allotment option  is  exercised in  full).  The Company
intends to use  such proceeds:  (i) to pay  approximately $16.1  million of  the
approximately  $65.3  million  expected  to  be  outstanding  under  the  Credit
Facility; and  (ii)  to apply  the  remaining approximately  $16.1  million  for
acquisitions,  working capital and general corporate purposes. See "Management's
Discussion and  Analysis of  Financial Condition  and Results  of Operations  --
Liquidity  and Capital Resources." While the Company has entered into letters of
intent for certain  proposed acquisitions, these  proposed transactions are  not
material to the Company's business.
 
    Pending  use of the net proceeds for the above purposes, the Company intends
to invest  such  funds  in short-term,  investment-grade  securities,  including
government obligations and money market instruments.
 
                                DIVIDEND POLICY
 
    The  Company has never declared  or paid any dividends  on its Common Stock,
and neither ADS nor CDI has declared or paid any dividends on its common  stock.
The  Company and its Board of Directors  currently intend to retain any earnings
for use in  the operation and  expansion of  the Company's business  and do  not
anticipate  paying any dividends on the Common Stock for the foreseeable future.
The Credit Facility prohibits the payment  of cash dividends without prior  bank
approval.  See "Management's Discussion and  Analysis of Financial Condition and
Results of Operations -- Liquidity and Capital Resources."
 
                                       14
<PAGE>
                                    DILUTION
 
    The net tangible book value  of the Company's Common  Stock as of March  31,
1996  was  $15,761,000, or  $2.78 per  share.  The "net  tangible book  value as
adjusted" per  share represents  the  amount of  total  tangible assets  of  the
Company  less total liabilities,  divided by 8,426,901, the  number of shares of
Common Stock outstanding after the Offering, after giving effect to the sale  of
2,750,000  shares of Common  Stock offered hereby at  an assumed public offering
price of  $13.00  per  share  and application  of  the  estimated  net  proceeds
therefrom.  The net tangible book  value as adjusted of  the Company as of March
31, 1996 would  have been  $48,009,000 or $5.70  per share.  This represents  an
immediate  increase in net tangible book value as adjusted of $2.92 per share to
existing stockholders  and an  immediate  dilution of  $7.30  per share  to  new
investors purchasing shares in the Offering.
 
    The following table illustrates the dilution per share as described above:
 
<TABLE>
<S>                                                                   <C>        <C>
Assumed public offering price.......................................             $   13.00
  Net tangible book value before the Offering.......................  $    2.78
  Increase attributable to new investors............................       2.92
                                                                      ---------
Net tangible book value as adjusted after the Offering..............                  5.70
                                                                                 ---------
Dilution to new investors...........................................             $    7.30
                                                                                 ---------
                                                                                 ---------
</TABLE>
 
    If  the Underwriters'  over-allotment option is  exercised in  full, the net
tangible book value as adjusted will  be $6.00 per share, resulting in  dilution
to new investors purchasing shares in the Offering of $7.00 per share.
 
    The  following table  sets forth, on  an as  adjusted basis as  of March 31,
1996, the number of shares of Common Stock purchased from the Company, the total
cash consideration paid to the Company and  the average price per share paid  by
the existing stockholders and by new investors purchasing shares of Common Stock
in the Offering, assuming an initial public offering price of $13.00 per share.
 
<TABLE>
<CAPTION>
                                                     SHARES                   TOTAL CASH
                                                  PURCHASED (1)             CONSIDERATION           AVERAGE
                                             -----------------------  --------------------------     PRICE
                                               NUMBER      PERCENT       AMOUNT        PERCENT     PER SHARE
                                             ----------  -----------  -------------  -----------  -----------
<S>                                          <C>         <C>          <C>            <C>          <C>
Existing stockholders......................   5,676,901       67.4%   $  41,589,000       53.8%    $    7.33
New investors..............................   2,750,000       32.6%      35,750,000       46.2%    $   13.00
                                             ----------        ---    -------------        ---
    Total..................................   8,426,901        100%   $  77,339,000        100%
                                             ----------        ---    -------------        ---
                                             ----------        ---    -------------        ---
</TABLE>
 
- ------------------------
(1) The  foregoing table assumes no exercise of the Underwriters' over-allotment
    option or of warrants and stock options outstanding as of March 31, 1996. As
    of March 31, 1996, there were  outstanding warrants and options to  purchase
    an  aggregate  of  1,085,070 shares  of  Common  Stock. To  the  extent that
    additional options are granted under  the Company's 1996 Stock Option  Plan,
    there  could be further dilution  to new investors if  the exercise price of
    such options is less than the  initial public offering price per share.  See
    "Management -- 1996 Stock Option Plan."
 
                                       15
<PAGE>
                                 CAPITALIZATION
 
    The following table sets forth: (i) the actual capitalization of the Company
at  March 31, 1996; and (ii) the capitalization of the Company at March 31, 1996
as adjusted to reflect borrowings outstanding under the Credit Facility and  the
application  of the net proceeds therefrom, and  the sale of 2,750,000 shares of
Common Stock offered hereby  and the application of  the estimated net  proceeds
therefrom. See "Use of Proceeds."
 
<TABLE>
<CAPTION>
                                                                                      MARCH 31, 1996
                                                                                   ---------------------
                                                                                                  AS
                                                                                    ACTUAL     ADJUSTED
                                                                                   ---------  ----------
                                                                                      (IN THOUSANDS)
<S>                                                                                <C>        <C>
Current portion of long-term obligations.........................................  $   4,167  $    1,793
Note payable to stockholder......................................................     12,500          --
                                                                                   ---------  ----------
  Short term debt and current portion of long-term obligations...................  $  16,667  $    1,793
                                                                                   ---------  ----------
                                                                                   ---------  ----------
Long-term obligations............................................................  $  49,006  $   46,664
Redeemable preferred stock of subsidiary.........................................      1,908          --
Stockholders' equity (1):
  Preferred stock: 5,000,000 shares authorized; no shares issued or
   outstanding...................................................................         --          --
  Common stock: 20,000,000 shares authorized; 5,676,901 shares issued and
   outstanding; 8,426,901 shares issued and outstanding as adjusted..............         57          84
  Warrants outstanding...........................................................        107         107
  Additional paid-in capital.....................................................     41,532      73,753
  Accumulated deficit............................................................     (8,378)     (8,378)
                                                                                   ---------  ----------
    Total stockholders' equity...................................................     33,318      65,566
                                                                                   ---------  ----------
      Total capitalization.......................................................  $  84,232  $  112,230
                                                                                   ---------  ----------
                                                                                   ---------  ----------
</TABLE>
 
- ------------------------
(1) Excludes 412,500 additional shares of Common Stock that may be sold pursuant
    to  the Underwriters' over-allotment  option and 1,085,070  shares of Common
    Stock reserved for issuance pursuant to the exercise of outstanding warrants
    and stock options under the Company's 1996 Stock Option Plan.
 
                                       16
<PAGE>
                      SELECTED CONSOLIDATED FINANCIAL DATA
 
    The following table presents selected consolidated statement of  operations,
balance  sheet and other data of the Company for the periods presented. See "The
Company" and  the  Notes  to  the  consolidated  financial  statements  included
elsewhere  herein  for information  concerning  the basis  of  presentation. The
following selected consolidated financial data as of December 31, 1994 and  1995
and  for each of the three years in the period ended December 31, 1995 have been
derived from  the  audited  consolidated financial  statements  of  the  Company
included  elsewhere in  this Prospectus and  should be read  in conjunction with
"Management's Discussion  and Analysis  of Financial  Condition and  Results  of
Operations."  The selected consolidated financial data  as of December 31, 1991,
1992 and 1993 and for  the years ended December 31,  1991 and 1992, are  derived
from audited consolidated financial statements that are not included herein. The
selected  consolidated financial  data as  of March 31,  1996 and  for the three
months ended March 31, 1995 and 1996 are unaudited but have been prepared on the
same basis as  the audited  financial data and,  in the  opinion of  management,
contain  all  adjustments,  consisting  only  of  normal  recurring adjustments,
necessary for a fair presentation of the results of operations for such periods.
The results of  operations for the  three months  ended March 31,  1996 are  not
necessarily indicative of results to be expected for the full fiscal year.
<TABLE>
<CAPTION>
                                                                                                                THREE
                                                                                                               MONTHS
                                                                                                             ENDED MARCH
                                                               YEARS ENDED DECEMBER 31,                          31,
                                            ---------------------------------------------------------------  -----------
                                               1991         1992         1993         1994         1995         1995
                                            -----------  -----------  -----------  -----------  -----------  -----------
                                                          (DOLLARS IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
<S>                                         <C>          <C>          <C>          <C>          <C>          <C>
STATEMENT OF OPERATIONS DATA:
Revenues..................................  $      33    $     146     $   7,730    $  18,517    $  30,004    $   5,034
Cost of operations........................         22          249         5,750       12,647       17,286        3,047
Selling, general and administrative
 expenses.................................        167          625         1,646        4,910        5,882        1,080
Depreciation and amortization expense.....          9          100         1,166        3,226        6,308          984
                                            -----------  -----------  -----------  -----------  -----------  -----------
Operating income (loss)...................       (165)        (828)         (832)      (2,266)         528          (77)
Interest expense..........................         --          (26)         (417)      (1,497)      (3,030)        (511)
Interest income...........................         --           --            35            2          189            4
                                            -----------  -----------  -----------  -----------  -----------  -----------
Loss before income taxes and extraordinary
 item.....................................       (165)        (854)       (1,214)      (3,761)      (2,313)        (584)
Income tax benefit (expense)..............         --           --           391        1,372         (332)         156
                                            -----------  -----------  -----------  -----------  -----------  -----------
Loss before extraordinary item............       (165)        (854)         (823)      (2,389)      (2,645)        (428)
Extraordinary item -- gain (loss) on early
 retirement of debt.......................         --           --            74           --         (908)          --
                                            -----------  -----------  -----------  -----------  -----------  -----------
Net loss..................................       (165)        (854)         (749)      (2,389)      (3,553)        (428)
Preferred stock dividend requirement......         --           --            --           --         (190)          --
                                            -----------  -----------  -----------  -----------  -----------  -----------
Net loss applicable to common
 stockholders.............................  $    (165)   $    (854)    $    (749)   $  (2,389)   $  (3,743)   $    (428)
                                            -----------  -----------  -----------  -----------  -----------  -----------
                                            -----------  -----------  -----------  -----------  -----------  -----------
Loss per share of common stock:
  Loss before extraordinary item..........  $    (.31)   $   (1.42)    $    (.51)   $    (.91)   $    (.76)   $    (.15)
                                            -----------  -----------  -----------  -----------  -----------  -----------
  Extraordinary item......................         --           --           .04           --         (.24)          --
                                            -----------  -----------  -----------  -----------  -----------  -----------
  Net loss................................  $    (.31)   $   (1.42)    $    (.47)   $    (.91)   $   (1.00)   $    (.15)
                                            -----------  -----------  -----------  -----------  -----------  -----------
                                            -----------  -----------  -----------  -----------  -----------  -----------
Weighted average common stock and common
 stock equivalent shares used to calculate
 per share amounts........................    539,508        600,832    1,607,586    2,612,749    3,729,055    2,770,889
 
OTHER DATA:
EBITDA (1)................................  $    (156  ) $    (728  ) $      334   $      960   $    6,836   $      907
EBITDA margin (2).........................     (472.7  )%    (498.6  )%        4.3 %        5.2 %       22.8 %       18.0%
 
<CAPTION>
 
                                               1996
                                            -----------
 
<S>                                         <C>
STATEMENT OF OPERATIONS DATA:
Revenues..................................   $  11,724
Cost of operations........................       6,108
Selling, general and administrative
 expenses.................................       1,935
Depreciation and amortization expense.....       2,718
                                            -----------
Operating income (loss)...................         963
Interest expense..........................      (1,617)
Interest income...........................          78
                                            -----------
Loss before income taxes and extraordinary
 item.....................................        (576)
Income tax benefit (expense)..............         160
                                            -----------
Loss before extraordinary item............        (416)
Extraordinary item -- gain (loss) on early
 retirement of debt.......................          --
                                            -----------
Net loss..................................        (416)
Preferred stock dividend requirement......         (63)
                                            -----------
Net loss applicable to common
 stockholders.............................   $    (479)
                                            -----------
                                            -----------
Loss per share of common stock:
  Loss before extraordinary item..........   $    (.08)
                                            -----------
  Extraordinary item......................          --
                                            -----------
  Net loss................................   $    (.08)
                                            -----------
                                            -----------
Weighted average common stock and common
 stock equivalent shares used to calculate
 per share amounts........................    6,065,445
OTHER DATA:
EBITDA (1)................................  $    3,681
EBITDA margin (2).........................        31.4 %
</TABLE>
 
<TABLE>
<CAPTION>
                                                                                     DECEMBER 31,
                                                                 -----------------------------------------------------   MARCH 31,
                                                                   1991       1992       1993       1994       1995        1996
                                                                 ---------  ---------  ---------  ---------  ---------  -----------
                                                                                           (IN THOUSANDS)
<S>                                                              <C>        <C>        <C>        <C>        <C>        <C>
BALANCE SHEET DATA:
Cash and cash equivalents......................................  $     109  $      12  $   2,134  $     548  $   6,383   $   6,706
Working capital (deficit)......................................        118       (332)       788     (2,237)    (8,819)     (9,558)
Property and equipment, net....................................        393        467     15,156     17,062     81,250      81,696
Total assets...................................................        629        705     35,651     37,557    114,693     115,432
Long-term debt and capital lease obligations, net of current
 portion.......................................................         --         --     16,073     18,487     48,789      49,006
Redeemable preferred stock of subsidiary.......................         --         --         --         --      1,908       1,908
Stockholders' equity...........................................        585         89     12,531     12,132     33,855      33,318
</TABLE>
 
- ------------------------------
(1)  EBITDA  represents  operating  income plus  depreciation  and amortization.
     While EBITDA data  should not be  construed as a  substitute for  operating
     income,  net income (loss)  or cash flows from  operations in analyzing the
     Company's operating  performance, financial  position and  cash flows,  the
     Company  has included  EBITDA data  (which are  not a  measure of financial
     performance under  generally  accepted accounting  principles)  because  it
     understands  that  such  data are  commonly  used by  certain  investors to
     evaluate a company's performance in the solid waste industry.
 
(2)  EBITDA margin represents EBITDA expressed as a percentage of revenues.
 
                                       17
<PAGE>
                      MANAGEMENT'S DISCUSSION AND ANALYSIS
                OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
 
    The  following discussion should  be read in  conjunction with the "Selected
Consolidated Financial Data",  the Company's  Consolidated Financial  Statements
and  the notes thereto and the Company's  Pro Forma Financial Statements and the
notes thereto, included elsewhere herein.
 
INTRODUCTION
 
    The Company has  adopted an acquisition-based  growth strategy that  focuses
on:  (i) the identification and acquisition  of solid waste landfills located in
secondary markets  that  are  within  approximately  125  miles  of  significant
metropolitan  centers;  and  (ii)  securing  dedicated  waste  streams  for such
landfills by  the  acquisition  or  development of  transfer  stations  and  the
acquisition  of collection companies. The  Company has completed 20 acquisitions
since January  1993. All  of these  acquisitions were  accounted for  under  the
purchase  method  of  accounting  for  business  combinations.  Accordingly, the
amortization of goodwill and landfill airspace reflects the fair market value of
the Company's  assets  at  the  time of  their  acquisition  rather  than  their
historical  cost  basis,  and  the  results  of  operations  for  such  acquired
businesses are  included in  the Company's  financial statements  only from  the
applicable date of acquisition. As a result, the Company believes its historical
results of operations for the periods presented are not directly comparable.
 
    There  are several other aspects of the Company's growth strategy that cause
management to believe that  the Company's historical  results of operations  may
not be consistent with future performance, including the following:
 
    - CONCENTRATION  OF LANDFILL ASSETS.  Since  the CDI Acquisition, the mix of
      the Company's assets  has been  concentrated in landfills,  as opposed  to
      collection  and  transfer  station  operations. As  a  result  of goodwill
      associated with the  Company's acquisitions and  the amortization  expense
      associated with its landfill assets and closure obligations, the amount of
      depreciation  and amortization as  a percentage of  the Company's revenues
      for the year ended December 31, 1995 and for the three months ended  March
      31,  1996 was relatively  high as compared to  other solid waste companies
      (21.0% and 23.2%, respectively). Management believes that this  percentage
      is likely to decline as the Company penetrates the market in its Illinois,
      Ohio   and  Pennsylvania  regions  by  acquiring  or  developing  transfer
      stations,   acquiring   collection   operations   and   making   "tuck-in"
      acquisitions of collection companies.
 
    - MANAGEMENT  CAPABILITIES.    Since  1993,  the  Company  has  assembled  a
      management team with substantial experience  in the solid waste  industry.
      The  Company believes that  its senior management team  has the ability to
      manage the Company's  operations as  they expand.  Therefore, the  Company
      believes  that the amount of  selling, general and administrative expenses
      is likely to decline as a percentage of revenues as the Company grows.
 
    - CELL DEVELOPMENT COSTS.  Cells developed to date at the landfills acquired
      in the CDI Acquisition have  been constructed with double liner  composite
      systems.  The Company  is exploring  the possibility  of using alternative
      design systems at its Ohio and Illinois landfills, which should result  in
      lower cell development costs.
 
    Consistent  with its operating program, the Company believes acquisitions of
solid waste  companies will  have a  positive impact  on its  future results  of
operations  and,  accordingly, believes  that  the Company's  historical results
should be considered in  conjunction with the  Unaudited Pro Forma  Consolidated
Financial   Statements  and   the  notes  thereto   included  elsewhere  herein.
Additionally, neither the  historical nor  the pro forma  results of  operations
fully  reflect the operating efficiencies and  improvements that are expected to
be achieved by integrating acquired businesses, internalizing waste flows to the
Company's landfills and realizing other synergies. See "Business -- Strategy."
 
GENERAL
 
    REVENUES.  The Company's revenues are attributable primarily to fees charged
to customers for waste collection, transfer and disposal services. The Company's
collection services are generally provided under
 
                                       18
<PAGE>
direct  agreements   with  its   customers  or   pursuant  to   contracts   with
municipalities.  Commercial and municipal contract  terms, where used, generally
range from one  to five  years and commonly  have automatic  renewal options.  A
relatively  small portion of such agreements  also provide for the prepayment of
certain fees, which  fees are reflected  as deferred revenues.  The table  below
shows  for the periods indicated, the percentage of the Company's total revenues
attributable to services provided:
 
<TABLE>
<CAPTION>
                                                                                           THREE MONTHS ENDED MARCH
                                                          YEARS ENDED DECEMBER 31,                   31,
                                                    -------------------------------------  ------------------------
                                                       1993         1994         1995         1995         1996
                                                    -----------  -----------  -----------  -----------  -----------
<S>                                                 <C>          <C>          <C>          <C>          <C>
Collection (1)....................................       57.8%        68.0%        55.3%        63.5%        39.4%
Transfer..........................................         --(2)       9.1          5.0          8.9          1.9
Landfill (1)......................................       42.2         22.8         39.0         27.0         58.5
Other.............................................         --          0.1          0.7          0.6          0.2
                                                        -----        -----        -----        -----        -----
    Total Revenues................................      100.0%       100.0%       100.0%       100.0%       100.0%
                                                        -----        -----        -----        -----        -----
                                                        -----        -----        -----        -----        -----
</TABLE>
 
- ------------------------
(1) The portion  of collection  revenues attributable  to disposal  charges  for
    waste  collected by the  Company and disposed of  at the Company's landfills
    has  been  excluded  from  collection  revenues  and  included  in  landfill
    revenues.
 
(2) In  1993,  the Company  did  not separately  account  for its  revenues from
    collection and transfer operations and, accordingly, revenues from  transfer
    operations are reflected as collection revenues.
 
    A   component   of  the   Company's   business  strategy   is   to  maximize
internalization of waste it collects and thereby realize higher margins from its
operations. By  disposing  of  waste at  Company-owned  landfills,  the  Company
retains the margin generated through disposal operations that would otherwise be
earned  by third-party landfills. During the  three months ended March 31, 1996,
98%  of  the  total  tonnage  collected  by  the  Company  was  disposed  of  at
Company-owned  landfills. This represents approximately 29% of the total tonnage
disposed of at Company-owned landfills in the three months ended March 31, 1996.
During such  period, 34%  of  the total  tonnage  disposed of  at  Company-owned
landfills was delivered pursuant to long-term contracts.
 
    EXPENSES.    Cost  of  operations include  labor,  maintenance  and repairs,
equipment  and  facility  rent,  utilities  and  taxes,  the  costs  of  ongoing
environmental  compliance,  safety and  insurance, disposal  costs and  costs of
independent haulers transporting Company waste to disposal sites. Disposal costs
include certain landfill taxes, host community fees, landfill site  maintenance,
fuel  and  other equipment  operating  expenses and  provision  for post-closure
expenses, consisting  of cap  maintenance, groundwater  monitoring, methane  gas
control and recovery and leachate treatment/disposal, anticipated to be incurred
in the future.
 
    Selling,  general and  administrative ("SG&A")  expenses include management,
clerical and  administrative  compensation,  overhead,  sales  costs,  community
relations  expenses, provisions for  estimated uncollectible accounts receivable
and unrealizable acquisition costs and management  fees paid to an affiliate  of
Charterhouse.  Upon closing of  the Offering, in lieu  of paying such management
fees, the Company will begin  to pay a salary  to the Company's Chairman  (which
should  result in savings  to the Company of  approximately $300,000 per annum).
See "Certain Transactions."
 
    Depreciation and amortization expense includes depreciation of fixed assets,
closure costs and amortization of landfill airspace, goodwill, other intangibles
and loan origination fees. The  amount of landfill amortization expense  related
to  airspace consumption can vary materially from landfill to landfill depending
upon the purchase price, landfill configuration and cell development costs.
 
    Certain direct landfill development  costs, such as engineering,  upgrading,
construction  and  permitting  costs,  are capitalized  and  amortized  based on
airspace consumed. All  of the  Company's capitalized  expenditures relating  to
cell  development and landfill  expansion work are in  connection with cells for
which the Company holds a permit for development. The Company believes that  the
costs  associated with engineering, owning and operating landfills will increase
in the future as a result of  federal, state and local regulation and a  growing
community awareness of the landfill permitting process. Although there can be no
assurance, the
 
                                       19
<PAGE>
Company believes that it will be able to implement price increases sufficient to
offset  these increased expenses. All  indirect landfill development costs, such
as executive  salaries, general  corporate overhead,  public affairs  and  other
corporate services, are expensed as incurred.
 
    The  Company  capitalizes engineering,  legal,  accounting and  other direct
costs incurred in  connection with potential  acquisitions, accounted for  using
the  purchase method for business  combinations. The Company, however, routinely
evaluates  such  capitalized   costs  and  expenses   those  costs  related   to
acquisitions  not likely to occur. Indirect acquisition costs, such as executive
salaries, general corporate overhead and other corporate services, are  expensed
as incurred.
 
    Accrued  closure and post-closure costs represent an estimate of the current
value of  the  future  obligations  associated  with  closure  and  post-closure
monitoring  of  non-hazardous  solid  waste  landfills  currently  owned  by the
Company. Site specific closure and  post-closure engineering cost estimates  are
prepared  annually  for  landfills owned  by  the Company.  Estimated  costs are
accrued based on accepted tonnage as landfill airspace is consumed. The  Company
periodically  updates its  estimates of  future closure  and post-closure costs.
These changes are accounted for on a prospective basis. The Company expects  its
closure  and  post-closure costs  per  ton to  decrease  as it  expands landfill
capacity and as such costs are amortized over greater airspace.
 
    The Company has  estimated that, as  of December 31,  1995, total costs  for
post-closure  activities,  including  cap  maintenance,  groundwater monitoring,
methane gas control and  recovery and leachate treatment/disposal  for up to  30
years  after  closure  in  certain cases,  will  approximate  $11.3  million. In
addition, the Company has estimated that, as of December 31, 1995, closure costs
expected to occur during  the operating lives of  these facilities and  expensed
over  these facilities' useful lives will approximate $28.4 million. At December
31, 1994  and  1995  and March  31,  1996,  accruals for  landfill  closure  and
post-closure   costs  (including   costs  assumed   through  acquisitions)  were
approximately $1.1 million,  $6.2 million  and $6.6  million, respectively.  The
accruals  reflect  relatively young  landfills  with estimated  remaining lives,
based on current waste flows,  that range from 4 to  46 years, and an  estimated
average remaining life of greater than 20 years.
 
RESULTS OF OPERATIONS
 
    The following table sets forth items in the Company's consolidated statement
of operations as a percentage of revenues for the periods indicated.
 
<TABLE>
<CAPTION>
                                                                                               THREE MONTHS ENDED
                                                              YEARS ENDED DECEMBER 31,             MARCH 31,
                                                         ----------------------------------  ----------------------
                                                            1993        1994        1995        1995        1996
                                                         ----------  ----------  ----------  ----------  ----------
<S>                                                      <C>         <C>         <C>         <C>         <C>
Revenues...............................................      100.0%      100.0%      100.0%      100.0%      100.0%
Cost of operations.....................................       74.4        68.3        57.6        60.5        52.1
Selling, general and administrative expenses...........       21.3        26.5        19.6        21.5        16.5
Depreciation and amortization expenses.................       15.1        17.4        21.0        19.6        23.2
                                                             -----       -----       -----       -----       -----
Operating income (loss)................................      (10.8)      (12.2)        1.8        (1.6)        8.2
Interest expense, net..................................       (4.9)       (8.1)       (9.5)      (10.0)      (13.1)
Income tax (expense) benefit...........................        5.0         7.4       (1.1)         3.1         1.4
Extraordinary gain (loss), net of income tax...........        1.0          --        (3.0)         --          --
                                                             -----       -----       -----       -----       -----
    Net loss...........................................       (9.7)%     (12.9)%     (11.8)%      (8.5)%      (3.5)%
                                                             -----       -----       -----       -----       -----
                                                             -----       -----       -----       -----       -----
EBITDA margin..........................................        4.3%        5.2%       22.8%       18.0%       31.4%
</TABLE>
 
THREE MONTHS ENDED MARCH 31, 1996 AND 1995
 
    REVENUES.   Revenues for  the three months  ended March 31,  1996 were $11.7
million compared to $5.0 million for the three months ended March 31, 1995.  The
increase  in revenues  is due  primarily to the  effects of  the CDI Acquisition
(which occurred after  March 31, 1995).  Revenues of $7.2  million for the  1996
period
 
                                       20
<PAGE>
were  generated from  companies acquired  since March  31, 1995,  while revenues
attributable to  existing operations  amounted to  $4.5 million,  a decrease  of
$492,000.  This decrease was due primarily to the lapse of an exclusive contract
with a transfer station in Oklahoma.
 
    COST OF OPERATIONS.  Cost of operations for the three months ended March 31,
1996 was $6.1 million compared to $3.0 million for the three months ended  March
31, 1995. This increase was attributable primarily to the associated increase in
revenues  described  above.  As a  percentage  of revenues,  cost  of operations
decreased to  52.1% in  the  1996 period  from 60.5%  in  the 1995  period.  The
resulting  increase  in  margins  was  due  primarily  to  the  Company's higher
proportion of  landfill operations  (which generally  have higher  margins  than
disposal  operations), with  landfill revenues  increasing from  $1.4 million to
$6.9 million and from 27.0% to 58.5%  as a percentage of revenues. Margins  also
increased  because  of  increased  operating  efficiencies  resulting  from  the
consolidation of hauling operations and the opening of new transfer stations  in
the Company's Missouri region.
 
    SELLING,  GENERAL AND ADMINISTRATIVE  EXPENSES.  SG&A  expenses increased to
$1.9 million for the three months ended March 31, 1996 compared to $1.1  million
for  the  three months  ended March  31,  1995. The  aggregate increase  in SG&A
expenses resulted  from expenses  associated with  the CDI  Acquisition, and  an
increase  in personnel and  other expenses related to  the anticipated growth of
the Company. As a  percentage of revenues, SG&A  expenses decreased to 16.5%  in
the  1996 period from 21.5% in the 1995 period. The decrease in SG&A expenses as
a percentage of revenues is due  partially to a significant increase in  revenue
producing  assets  while corporate  level personnel  and other  related expenses
increased moderately.  SG&A  expenses in  future  periods should  be  positively
affected  by savings of approximately $300,000 per annum due to the termination,
effective at the closing of the Offering, of the Company's management  agreement
with an affiliate of its principal stockholder. See "Certain Transactions."
 
    DEPRECIATION  AND  AMORTIZATION  EXPENSE.    Depreciation  and  amortization
expense for the three months ended March  31, 1996 was $2.7 million compared  to
$1.0  million  for  the three  months  ended  March 31,  1995.  The  increase in
depreciation and amortization expense  is due primarily  to the CDI  Acquisition
which  significantly increased landfill airspace  amortization and provision for
closure costs, and, to a lesser extent, the capital expenditures associated with
such  acquisition.  See  "--  Introduction."   As  a  percentage  of   revenues,
depreciation  and amortization expense was 23.2%  and 19.6% for the three months
ended March  31, 1996  and March  31, 1995,  respectively. The  relatively  high
percentages  are primarily  due to the  configuration of  the Wheatland landfill
during the three months ended March 31,  1995 and the high concentration of  the
Company's  assets in  landfills following the  CDI Acquisition  during the three
months ended March  31, 1996.  Net fixed assets  increased to  $81.7 million  at
March  31,  1996 from  $17.3  million at  March 31,  1995  and goodwill,  net of
accumulated amortization expense, increased to  $15.6 million at March 31,  1996
from $13.6 million at March 31, 1995.
 
    NET  INTEREST EXPENSE.  Net interest expense  was $1.5 million for the three
months ended March  31, 1996  compared to $507,000  for the  three months  ended
March  31, 1995.  This increase is  attributable to additional  debt incurred to
complete the CDI Acquisition.
 
    INCOME TAXES.  The  Company recorded an income  tax benefit of $160,000  for
the  three months ended March  31, 1996 and $156,000  for the three months ended
March 31, 1995 primarily due to the  effects of differences in the treatment  of
goodwill for book and tax purposes.
 
YEARS ENDED DECEMBER 31, 1995 AND 1994
 
    REVENUES.   Revenues in 1995 were $30.0 million compared to $18.5 million in
1994. The increase  in revenues  was due  primarily to  the effects  of the  CDI
Acquisition  and, to a lesser extent, price and volume increases attributable to
existing operations.  Revenues of  $10.1  million in  1995 were  generated  from
companies  acquired  during 1995,  while  increases in  revenue  attributable to
operations acquired prior to 1996 amounted to $1.3 million.
 
    COST OF OPERATIONS.  Cost of  operations in 1995 was $17.3 million  compared
to  $12.6 million in 1994. This increase  in costs was attributable primarily to
increases in  the  Company's  revenues  described  above.  As  a  percentage  of
revenues,  cost of operations was 57.6% in  1995 compared to 68.3% in 1994. This
decrease
 
                                       21
<PAGE>
was due primarily to operating efficiencies and improvements from the  Company's
development  of its Missouri region and the impact of the CDI Acquisition, which
shifted the relative proportion  of the Company's  assets toward landfills  that
typically operate at higher margins than collection operations.
 
    SELLING,  GENERAL  AND ADMINISTRATIVE  EXPENSES.   SG&A  expenses  were $5.8
million in 1995 compared to $4.9 million  in 1994. The increase was a result  of
expenses  associated with the  CDI Acquisition, expenses  incurred in connection
with the  Company's increase  in personnel  and other  expenses related  to  the
anticipated expansion of the Company's operations. SG&A expenses as a percentage
of revenues were 19.6% in 1995 compared to 26.5% in 1994.
 
    DEPRECIATION  AND  AMORTIZATION  EXPENSE.    Depreciation  and  amortization
expense in 1995 was $6.3 million compared to $3.2 million in 1994. The  increase
in  depreciation and amortization expense  is due to the  acquisition of the CDI
landfills, with their  relatively higher depreciation  and amortization  expense
compared  to  depreciation and  amortization  expense of  collection operations,
depreciation of  increased capital  expenditures  and a  one time  write-off  of
$505,000  following the Company's election in 1995 not to pursue the enforcement
of several covenants not to compete. Net fixed assets increased to $81.3 million
in 1995 from $17.1 million in 1994 and goodwill, net of accumulated amortization
expense, increased to $15.7 million in 1995 from $13.6 million in 1994.
 
    NET INTEREST EXPENSE.   Net interest  expense increased to  $2.8 million  in
1995  from  $1.5 million  in 1994.  This  increase primarily  reflects increased
indebtedness incurred in connection with acquisitions and capital expenditures.
 
    INCOME TAXES.  Although the Company recorded a net loss in 1995, the Company
recorded an  income  tax expense  of  $300,000  in 1995  because  the  Company's
subsidiaries  were not then consolidated and CDI  reported a profit in 1995. The
Company recorded an income tax  benefit of $1.4 million in  1994. See Note 6  of
the Notes to Consolidated Financial Statements included elsewhere herein.
 
    EXTRAORDINARY  EXPENSE.   In 1995,  the Company  recognized an extraordinary
loss of  $908,000,  representing  unamortized deferred  debt  issuance  cost  in
connection  with the  extinguishment of  debt outstanding  under a  prior credit
facility.
 
YEARS ENDED DECEMBER 31, 1994 AND 1993
 
    REVENUES.  Revenues in 1994 were  $18.5 million compared to $7.7 million  in
1993.  The  increase  in revenues  was  due  primarily to  the  effects  of 1993
acquisitions, the operations of which  were included in the Company's  financial
results  for  a  full year  beginning  in  1994, and  the  additional  impact of
acquisitions completed during 1994.
 
    COST OF OPERATIONS.  Cost of operations in 1994 were $12.6 million  compared
to  $5.8 million  in 1993.  The increase in  the cost  of operations principally
reflects costs  associated with  acquired operations.  Cost of  operations as  a
percentage  of revenues, however, decreased from 74.4% in 1993 to 68.3% in 1994.
The improvement in  margins in  1994 resulted primarily  from lower  third-party
disposal  costs  as a  result  of diverting  waste  at acquired  businesses from
third-party landfills to Company-owned  landfills. Margins also benefitted  from
the integration of acquired companies.
 
    SELLING,  GENERAL  AND ADMINISTRATIVE  EXPENSES.   SG&A  expenses  were $4.9
million in 1994 compared to $1.6 million in 1993. SG&A expenses as a  percentage
of revenues were 26.5% in 1994 compared to 21.3% in 1993. This increase reflects
expenses  incurred in  connection with the  Company's increase  in personnel and
other expenses related to the anticipated growth of the Company.
 
    DEPRECIATION  AND  AMORTIZATION  EXPENSE.    Depreciation  and  amortization
expense  in 1994 was $3.2 million compared to $1.2 million in 1993. The increase
in depreciation  and amortization  expense is  due to  the full  year impact  of
acquisitions completed during 1993.
 
    NET  INTEREST EXPENSE.   Net interest  expense increased to  $1.5 million in
1994 from  $382,000  in  1993,  primarily  because  the  Company's  indebtedness
increased  subsequent to 1993 as a  result of acquisitions, landfill development
and other capital expenditures.
 
                                       22
<PAGE>
LIQUIDITY AND CAPITAL RESOURCES
 
    Due to the capital intensive nature of the solid waste industry, the Company
has used, and expects to continue  using, substantially all cash generated  from
operations  to fund acquisitions, capital expenditures and landfill development.
Certain operating equipment has also been acquired using leases which have short
and medium-term  maturities.  As a  result,  the Company  has  incurred  working
capital  deficits in the past, and there  can be no assurance that its available
working  capital  will  be   sufficient  in  the  future   as  it  pursues   its
acquisition-based  growth strategy. Historically, the  Company has satisfied its
acquisition, capital  expenditure and  working capital  needs primarily  through
equity infusions from its principal stockholders and bank financing.
 
    The  Company's  capital expenditure  and  working capital  requirements have
increased significantly, reflecting  the Company's rapid  growth by  acquisition
and  development of revenue  producing assets, and will  increase further as the
Company continues to pursue its acquisition-based growth strategy. During  1994,
the  Company spent $5.6  million in capital expenditures,  of which $1.7 million
was for cell development  at the Company's initial  two landfills. During  1995,
when  the Company acquired three more  landfills, the Company spent $6.2 million
in capital expenditures,  of which  $4.9 million  was for  cell development.  In
connection  with such acquisitions, the Company required $25.5 million in equity
infusions from its  principal stockholders and  $36.7 million in  bank debt.  In
1996,  the  Company  expects  to spend  approximately  $13  million  for capital
expenditures  of  which  $8.1  million  is  anticipated  to  be  used  for  cell
development.  The increase in cell  development costs in 1996  over 1995 will be
due to the Company's ownership of the Clarion, Livingston and Wyandot  landfills
for  the entire year and  the fact that increased  volumes at the landfills will
cause cell development  to occur prior  to the winter  season when  construction
activities cease.
 
    In  May 1996, the Company entered into  the $87 million Credit Facility with
Internationale Nederlanden (U.S.) Capital Corporation, as administrative  agent,
and  Morgan Guaranty  Trust Company of  New York, as  documentation agent, which
refinanced all  of  the Company's  existing  bank debt  and  note payable  to  a
stockholder,  and redeemed  the preferred stock  of a  subsidiary. In connection
with such refinancing, the Company recognized an extraordinary loss of $721,000,
representing unamortized  deferred  debt  issuance  cost.  The  Credit  Facility
provides  the Company with two  term loans of $38  million and $25 million which
have been used to repay existing debt and financing fees, a $7 million revolving
credit facility  for  working capital  purposes,  and a  $17  million  expansion
facility which may only be used for acquisitions. The various loans and lines of
credit  under the Credit Facility bear interest  at rates per annum equal to, at
the Company's discretion, either: (i) the  higher of (a) the federal funds  rate
plus  1/2 of 1%  or (b) the prime  rate, plus an  applicable margin ranging from
1.00% to 1.75%;  or (ii) the  London Interbank Offered  Rate ("LIBOR"), plus  an
applicable  margin ranging from 2.50% to  3.25% and have maturities ranging from
2001 to 2003. As  of June    , 1996,  the actual interest  rates on the  various
loans  and lines of credit under the Credit Facility ranged from   % to   %, and
the total unused availability  under the Credit Facility  was $21.7 million,  of
which  $7.0 million may be  used for working capital  purposes and $14.7 million
may be  used  for acquisitions.  The  Company's  ability to  use  the  expansion
facility  is  based upon  a number  of covenants,  including the  maintenance of
specified debt to  equity and fixed  charge coverage ratios.  The Company is  in
compliance   with  the  terms  of   these  covenants.  Other  covenants  contain
limitations on the payments of dividends, the incurrence of additional debt  and
the  use of proceeds from debt or equity issuances. The Credit Facility requires
the Company to use  50% of the  proceeds of any  equity offering (including  the
Offering)  to  repay a  portion of  the  term loans.  Upon consummation  of this
Offering and the application of the net proceeds therefrom, the Company  expects
to  have $21.7 million of availability under  the Credit Facility, of which $7.0
million may be used for working capital  purposes and $14.7 million may be  used
for acquisitions.
 
    The  Company expects that Subtitle D and other regulations that apply to the
non-hazardous waste  disposal industry  will  require the  Company, as  well  as
others  in the industry, to  alter operations and to  modify or replace existing
facilities. Such expenditures  have been  and will continue  to be  substantial.
Regulatory  changes could  accelerate expenditures for  closure and post-closure
monitoring and obligate the Company to spend sums in addition to those presently
reserved for  such purposes.  These  factors, together  with the  other  factors
discussed above, could substantially increase the Company's operating costs. See
"Risk Factors -- Extensive Environmental and Land Use Laws and Regulations."
 
                                       23
<PAGE>
    The  Company intends to  satisfy its interest obligations  as well as future
capital expenditures  and working  capital requirements,  with cash  flows  from
operations  and borrowings  under the Credit  Facility. After  completion of the
Offering, the  Company  may  need  to  raise  additional  capital  to  fund  the
acquisition  and integration of  additional solid waste  businesses. The Company
may raise such funds through bank  financings or public or private offerings  of
its  securities. There  can be  no assurance  that the  Company will  be able to
secure such funding, if necessary, on favorable terms, if at all. If the Company
is not successful in securing such funding, the Company's ability to pursue  its
business  strategy may be impaired and  results of operations for future periods
may be adversely affected. See "Risk Factors -- Capital Requirements and Limited
Working Capital."
 
CDI ACQUISITION
 
    Through the  CDI  Acquisition,  the Company  acquired  three  landfills  and
certain other assets (the "MSG Facilities") from the Municipal Services Group of
Envirite  Corporation.  See  "The Company."  For  the periods  presented  in the
historical financial statements of the MSG Facilities included elsewhere herein,
the MSG  Facilities' funds  were generated  from operating  activities and  from
financing  through Envirite  Corporation's credit  facility. Separate historical
financial statements  for  the MSG  Facilities  could not  be  prepared  because
Envirite  Corporation did  not maintain  intercompany accounts  that would allow
calculation of corporate overhead allocations  and certain balance sheet  items.
Operating  cash flows from the MSG Facilities for the fiscal years ended January
1, 1994 and December 31, 1994 and the  period from January 1, 1995 to the  dates
of  acquisition  of such  properties were  $3.1 million,  $3.0 million  and $3.8
million, respectively.  Capital  expenditures for  the  MSG Facilities  for  the
fiscal  years ended January  1, 1994 and  December 31, 1994  and the period from
January 1,  1995  to the  dates  of acquisition  of  such properties  were  $4.7
million,  $2.1 million and $2.2 million, respectively. These cash flows may have
been different  if the  MSG Facilities  had operated  independently of  Envirite
Corporation for the periods presented.
 
INFLATION AND PREVAILING ECONOMIC CONDITIONS
 
    To  date,  inflation  has not  had  a  significant impact  on  the Company's
operations. Consistent with industry practice,  most of the Company's  contracts
provide  for a  pass through of  certain costs, including  increases in landfill
tipping fees and, in some cases,  fuel costs. The Company therefore believes  it
should  be  able to  implement price  increases sufficient  to offset  most cost
increases resulting from inflation. However, competitive factors may require the
Company to  absorb at  least a  portion of  these cost  increases,  particularly
during  periods of high inflation. The Company is unable to determine the future
impact of a sustained economic slowdown.
 
SEASONALITY
 
    The Company's revenues tend to be somewhat lower in the winter months.  This
is  primarily attributable to the fact that: (i) the volume of waste relating to
construction and  demolition activities  tends  to increase  in the  spring  and
summer  months; and (ii) the  volume of industrial and  residential waste in the
regions where the Company operates tends  to decrease during the winter  months.
In  addition, particularly harsh weather conditions may delay the development of
landfill capacity and otherwise result in the temporary suspension of certain of
the Company's operations  and could  materially adversely  affect the  Company's
overall business, financial condition and results of operations.
 
                                       24
<PAGE>
                                    BUSINESS
 
INTRODUCTION
 
    American  Disposal Services  is a regional,  integrated, non-hazardous solid
waste services  company  that  provides solid  waste  collection,  transfer  and
disposal  services primarily in  the Midwest. The Company  owns five solid waste
landfills and owns, operates  or has exclusive contracts  to receive waste  from
seven  transfer  stations. The  Company's  landfills and  transfer  stations are
supported by its  collection operations,  which serve  over 85,000  residential,
commercial and industrial customers.
 
    The Company began its operations in the Midwest and currently has operations
in  Arkansas, Illinois, Kansas,  Missouri, Ohio, Oklahoma  and Pennsylvania. The
Company has  adopted  an  acquisition-based  growth  strategy,  and  intends  to
continue  its expansion in its existing  and proximate markets. A cornerstone of
the Company's growth strategy is to  identify and acquire solid waste  landfills
located  in  secondary  markets  that  are  within  approximately  125  miles of
significant metropolitan centers and to secure dedicated waste streams for  such
landfills  by acquisition or development of transfer stations and acquisition of
collection companies. The  Company expects the  current consolidation trends  in
the solid waste industry to continue as many independent landfill and collection
operators  lack the capital resources, management skills and technical expertise
necessary to operate in compliance with increasingly stringent environmental and
other governmental regulations. Due in  part to this consolidation, the  Company
believes  that significant opportunities  exist to expand  and further integrate
its operations in each of its existing markets. Since January 1993, the  Company
has acquired 20 solid waste businesses, including four solid waste landfills, 15
solid waste collection companies and one transfer station.
 
    The  Company's operating program involves a four-step process: (i) acquiring
solid waste landfills in its target markets; (ii) securing captive waste streams
for its landfills through  the acquisition or  development of transfer  stations
serving  those  markets, through  acquisitions  of collection  companies  and by
entering  into  long-term  contracts  directly  with  customers  or   collection
companies;  (iii)  making  "tuck-in"  acquisitions  of  collection  companies to
further penetrate its target markets; and (iv) integrating these businesses into
the Company's  operations to  achieve operating  efficiencies and  economies  of
scale.  The implementation of  the Company's operating  program is substantially
complete in  its  Missouri region  (which  also includes  Arkansas,  Kansas  and
Oklahoma),  where the  Company has  completed the  acquisition of  12 collection
companies and the  acquisition or  development of three  transfer stations.  The
Company  is in the initial phases of its operating program in the Illinois, Ohio
and Pennsylvania regions in which the Company began operations in 1995.
 
    The Company's operating  strategy emphasizes  the integration  of its  solid
waste  collection  and  disposal  operations and  the  internalization  of waste
collected. One  of  the  Company's  goals  is  for  its  captive  waste  streams
(including the Company's collection operations and third party haulers operating
under  long-term contracts) to provide  in excess of 50%  of the volume of solid
waste disposed of at each of its landfills. During the three months ended  March
31,  1996, the Company's  captive waste constituted  an average of approximately
63% of the solid waste disposed of at its landfills.
 
INDUSTRY BACKGROUND
 
    In the United  States, landfilling is  at present the  most common means  of
disposing  of  non-hazardous  municipal  solid  waste  ("MSW"),  which  consists
primarily of refuse and garbage  from households and commercial  establishments.
In  addition, landfilling is  one of the  means of disposing  of certain special
waste. Special waste, some types of which may require special handling, consists
of all waste not regulated as hazardous waste under federal or state laws  other
than MSW and may include asbestos, petroleum contaminated soil, incinerator ash,
foundry sands and sewage and industrial sludges.
 
    In October 1991, the EPA adopted the Subtitle D Regulations, which generally
became  effective on October 9, 1993 (except for certain MSW landfills accepting
less than 100 tons per  day, as to which the  effective date was April 9,  1994,
and  new  financial  assurance  requirements,  which  are  scheduled  to  become
effective April 9,  1997). The  Subtitle D Regulations  specify design,  siting,
operating,   monitoring,  closure   and  financial   requirements  for  landfill
operations  and,  among  other  things,   require  upgraded  or  new   composite
 
                                       25
<PAGE>
landfill  liners, leachate collection and treatment, groundwater and methane gas
monitoring, stricter  siting  and  locational  criteria,  closure  and  extended
post-closure  requirements and financial assurances (such as a surety bond) that
the owner  or operator  can meet  certain of  these obligations.  Each state  is
required  to revise its  applicable solid waste regulations  or programs to meet
the  requirements  of   the  Subtitle   D  Regulations   or  such   requirements
automatically  will  be imposed  by the  EPA. Many  states have  already adopted
regulations or programs as stringent as, or more stringent than, the Subtitle  D
Regulations,  including  all  of  those in  which  the  Company's  landfills are
located.
 
    The Company believes  that in recent  years there has  been a trend  towards
consolidation  of landfill ownership and that a similar trend is emerging in the
solid waste collection  industry, which historically  has been characterized  by
numerous  small companies. The Company believes  that these trends will continue
and are the result of several factors:
 
    - The Subtitle D Regulations and related state regulations and programs have
      significantly increased the amount of capital and the technical  expertise
      required  in  order to  own  and operate  a  landfill. As  a  result, many
      landfill operators  that  lack  the  required  capital  or  expertise  are
      electing to sell their landfills, as an alternative to closing them.
 
    - A  number of  municipalities are electing  to privatize  the operations of
      their municipal  landfills as  an alternative  to funding  the changes  to
      these  landfills that are required in order  to comply with the Subtitle D
      Regulations and related state regulations and programs.
 
    - As a result of  heightened sensitivity to  environmental concerns by  many
      communities,  it is  becoming increasingly  desirable in  many markets for
      collection companies to provide waste  reuse and reduction programs,  such
      as  recycling and composting, in addition to conventional waste collection
      services. This development, as well as more stringent bonding requirements
      being imposed  on waste  collection companies  by various  municipalities,
      have  increased  the  amount  of  capital  generally  required  for  waste
      collection operations, causing private collection companies that lack  the
      requisite   capital  to  sell  their   operations  to  better  capitalized
      companies.
 
STRATEGY
 
    The Company's objective is to build a large regional fully-integrated  solid
waste services company with an established market presence in secondary markets.
The  Company's strategy  for achieving this  objective is to  establish a market
presence anchored by its landfills; to increase volume at its landfills  through
"tuck-in"  acquisitions of collection companies  and marketing to new customers;
to provide  a high  level  of customer  service;  to implement  selective  price
increases;  and  to  continue  to  implement  strict  cost  controls  and reduce
corporate overhead as a percentage of  revenues. The Company believes that  this
strategy  of building  an integrated entity  should provide  it with competitive
cost advantages  in its  targeted  regional markets.  The Company's  ability  to
implement  its strategy is enhanced by the experience of its senior managers and
their knowledge of the solid waste industry.
 
    The Company targets acquisitions in geographic areas characterized by one or
more  of  the  following  criteria:  (i)  the  availability  of  permitted   and
underutilized  landfill capacity located outside of,  but within 125 miles of, a
significant metropolitan center; (ii)  the absence of  a dominant competitor  in
the  area  which  would  preclude the  Company  from  implementing  its business
strategy; (iii) anticipated  economic and  population growth; and  (iv) near  or
medium-term scheduled closures of competing landfills.
 
    The  Company  has  adopted  the  following  four-step  operating  program in
executing its business strategy:
 
        1.  LANDFILL  ACQUISITIONS.  Once  the Company identifies  an area  that
    qualifies under its target market criteria, the Company seeks to acquire one
    or  more landfills in that  area that can be  accessed economically from the
    metropolitan center or from the regional market area, either through  direct
    hauling  or through strategically located transfer stations. In evaluating a
    landfill acquisition,  the Company  considers, among  others, the  following
    factors:  (i) current disposal  costs together with  transportation costs to
    the targeted  landfill  relative to  transportation  and disposal  costs  of
    potential  competitors; (ii) expected landfill life; (iii) opportunities for
    landfill expansion;  and  (iv)  projected short-term  ability  to  secure  a
    minimum of 500 tons per day of disposal volume.
 
                                       26
<PAGE>
        2.   SECURE  CAPTIVE WASTE  VOLUMES.  After  the Company  has acquired a
    landfill, it seeks to build a  market presence and increase the  utilization
    of the landfill by securing captive waste streams, which includes developing
    and  acquiring transfer  stations, entering into  waste collection contracts
    and acquiring waste collection companies. Generally, the Company pursues the
    acquisition  of  collection  companies   that:  (i)  have   well-established
    residential  or  commercial collection  routes  and accounts;  (ii)  own and
    operate transfer stations; or (iii) do not own landfills and are  vulnerable
    to  volatile disposal  pricing, which the  Company believes  it can minimize
    through landfill ownership.
 
        3.   "TUCK-IN"  ACQUISITIONS.   The  Company  acquires  service  rights,
    obligations, machinery and equipment in "tuck-in" acquisitions of collection
    companies  to: (i) increase the waste stream directed to its landfills; (ii)
    maximize its market presence; and (iii) take advantage of economies of scale
    which should increase earnings and return on capital.
 
        4.  INTEGRATION AND EXPANSION  OF OPERATIONS.  Immediately upon  closing
    any  acquisition,  the  Company  integrates the  acquired  company  into its
    operations  by:  (i)  instituting  strict  cost  control  procedures;   (ii)
    consolidating   and  rationalizing  collection  routes  and  pricing;  (iii)
    implementing Company operating policies  and procedures (including  programs
    designed  to improve employee productivity  and equipment utilization); (iv)
    establishing a sales and  marketing force; and  (v) converting the  acquired
    company   to  the  Company's  accounting,  data  processing  and  management
    reporting systems. During the transition period following acquisitions,  the
    Company  retains the management of certain companies it acquires in order to
    benefit from management's local operating knowledge and the goodwill it  has
    developed.  Additionally, on a selective basis,  the Company seeks to expand
    the capacity of its  landfills to accommodate  increasing waste volumes  and
    improve profitability.
 
ACQUISITION PROGRAM
 
    In   January  1993,  representatives  of   Charterhouse  and  the  Company's
management formulated an acquisition-based growth strategy to establish a  large
regional  fully-integrated solid  waste management services  company. To execute
its strategy, affiliates of  Charterhouse acquired a  majority interest in  ADS,
which  owned one landfill in Oklahoma,  and began assembling a senior management
team. See "The Company." Using ADS as a platform for this strategy, the  Company
has increased the number of landfills it owns from one to five and has completed
20 acquisitions of solid waste companies since January 1993.
 
    The  Company  has assembled  an  experienced acquisition  team  comprised of
operations,  environmental,   engineering,  legal,   financial  and   accounting
personnel,  each engaged in identifying and evaluating acquisition opportunities
in  order  to  execute  its  operating  program.  The  Company  has  established
pre-acquisition  review procedures for  acquisition candidates, including legal,
financial, engineering, operational and environmental reviews. The environmental
review includes, where appropriate, investigation of geologic, hydrogeologic and
other site conditions,  past and  current operations (including  types of  waste
deposited),  design  and  construction records,  permits,  regulatory compliance
history, regulatory agency records and available soil sampling, groundwater  and
air  monitoring results.  The Company  uses regional  managers to  assist in the
acquisition  process   by  identifying   suitable  candidates   and   performing
pre-acquisition review and evaluation tasks.
 
    In  considering  whether  to proceed  with  an acquisition,  in  addition to
determining whether the candidate meets the Company's criteria described  above,
the  Company  evaluates  a number  of  factors, including:  (i)  the acquisition
candidate's historical  and  projected  financial  results;  (ii)  any  expected
synergies  with  one or  more of  the Company's  existing operations;  (iii) the
proposed purchase price and  the Company's expected  resultant internal rate  of
return  on  investment and  the expected  impact on  the Company's  earnings per
share; (iv) whether the candidate will  enhance the Company's ability to  effect
other  acquisitions  in  the  vicinity;  (v)  the  candidate's  customer service
reputation and relationships  with the local  communities; (vi) the  composition
and  size of the candidate's customer base; (vii) the types of services provided
by  the  candidate;  and  (viii)   whether  the  candidate  has  definable   and
controllable  liabilities,  including potential  environmental  liabilities. The
Company believes that significant opportunities  exist to acquire new  landfills
and to develop its existing markets, and reviews acquisition opportunities on an
on-going basis.
 
                                       27
<PAGE>
    The  Company has  completed 20 acquisitions  of solid  waste companies since
January 1993, which are summarized in the table below.
 
<TABLE>
<CAPTION>
              COMPANY                         BUSINESS              PRINCIPAL LOCATION          DATE ACQUIRED
- -----------------------------------  --------------------------  -------------------------  ---------------------
<S>                                  <C>                         <C>                        <C>
MISSOURI REGION:
  Wheatland                          Landfill                    Scammon, KS                January 1993
  Pittsburg Sanitation               Collection                  Pittsburg, KS              January 1993
  Ozark Sanitation                   Collection                  Carthage, MO               January 1993
  Trashmaster                        Collection                  Joplin, MO                 January 1993
  A-1 Trash Service                  Collection                  Verona/Aurora, MO          April 1993
  Tate's Transfer                    Transfer Station            Verona/Aurora, MO          April 1993
  Renfro Sanitation                  Collection                  Branson, MO                June 1993
  B&B Trash                          Collection                  Pittsburg, KS              July 1993
  B&B Refuse                         Collection                  Neosho, MO                 December 1993
  Apex Sanitation                    Collection                  Grove, OK and Green        December 1993
                                                                 Forest, AR
  Epps Sanitation                    Collection                  Branson, MO                December 1993
  Cummings Sanitation                Collection                  Nixa, MO                   May 1994
  Light Hauling                      Collection                  Branson, MO                August 1994
  Poole's Sanitation                 Collection                  Bentonville, AR            August 1994
WESTERN PENNSYLVANIA REGION:
  Clarion                            Landfill and Collection     Leeper, PA                 June 1995
  Mauthe Sanitation                  Collection                  Strattanville, PA          March 1996
OHIO REGION:
  Wyandot                            Landfill                    Upper Sandusky, OH         August 1995
  Environmental Transportation and   Collection                  Findlay, OH                May 1996
   Management
  R&R Waste Disposal                 Collection                  Findlay, OH                May 1996
ILLINOIS REGION:
  Livingston                         Landfill                    Pontiac, IL                November 1995
</TABLE>
 
    MISSOURI REGION.  The Company established a market presence in the southwest
Missouri region in January 1993 with the acquisition of its Wheatland  landfill.
The  implementation of the Company's operating program is substantially complete
in its Missouri region. Since purchasing the Wheatland landfill, the Company has
acquired one transfer station and independently developed two transfer stations.
The Company also has exclusive contracts to accept waste from two other transfer
stations. Additionally, the Company acquired 12 collection companies,  including
the  three operations purchased simultaneously  with the Wheatland landfill. The
collection operations and  transfer stations have  been consolidated into  three
divisions.  The Company has  integrated acquired companies  by consolidating and
rationalizing routes  and pricing,  reducing overhead  through consolidating  an
acquired  company's  operations, implementing  the  Company's cost  controls and
operating procedures, converting acquired companies to the Company's  management
reporting  systems  and implementing  a sales  and  marketing team.  The Company
continues to pursue "tuck-in" acquisitions  of collection companies to  increase
its  per ton margins through internalizing waste streams. The Company also seeks
to expand  its  operations by  taking  advantage of  the  economic  efficiencies
provided  by  its integrated  operations  and is  in  the process  of developing
another transfer station. Since the  acquisition of its Wheatland landfill,  the
Company has increased the waste volume at its landfill by approximately 800 tons
per day.
 
    WESTERN  PENNSYLVANIA REGION.  The  Company entered the western Pennsylvania
region in  June  1995  with the  acquisition  of  its Clarion  landfill  and  an
affiliated  collection company. The Clarion landfill is located within 110 miles
of Pittsburgh and Erie, Pennsylvania. The Company is in the early stages of  its
operating  program in the western Pennsylvania  region. Since the acquisition of
the Clarion landfill, the Company has reached the maximum allowable waste volume
by increasing deliveries  to this landfill  by approximately 300  tons per  day,
primarily  through the expansion of its market presence and the geographic scope
of its
 
                                       28
<PAGE>
operations. As part of its ongoing strategy in the western Pennsylvania  market,
the  Company  seeks  to  increase  its  volume  of  internalized  waste  through
additional "tuck-in" acquisitions in order to increase per ton margins. In March
1996, the  Company completed  its first  "tuck-in" acquisition  of a  collection
company in this region.
 
    OHIO  REGION.   The Company established  a market  presence in north-central
Ohio in  August 1995  with the  acquisition of  its Wyandot  landfill, which  is
located   within  approximately  125   miles  of  Cleveland,   Ohio  and  within
approximately 75 miles of Toledo and Columbus, Ohio. The Company is in the early
stages of its  operating program  in the  north-central Ohio  region. Since  the
acquisition  of the Wyandot landfill, the Company has increased the waste volume
at this landfill by approximately 300 tons per day, primarily through  operating
under  contract with two  transfer stations and implementing  a new sales focus.
The Company recently completed  the acquisition of  two collection companies  in
the  Ohio  region  and  is pursuing  the  acquisition  of  additional collection
companies to increase its  volume of internalized waste.  To further expand  its
operations, the Company is seeking to increase capacity at the Wyandot landfill.
See  "-- Operations -- Landfills." Prior to  the acquisition by the Company, the
Wyandot landfill's waste  volume was  composed primarily of  special waste.  The
Company  is seeking  to increase  the volume  of MSW  relative to  special waste
deposited at the Wyandot  landfill through shifting the  focus of its sales  and
marketing efforts towards MSW collections.
 
    ILLINOIS REGION.  The Company established a market presence in north-central
Illinois in November 1995 with the acquisition of its Livingston landfill, which
is  located approximately 90 miles from downtown Chicago. The acquisition of the
Livingston landfill was attractive  to the Company's  management because of  the
expected  closing of two competing landfills  that currently accept an aggregate
of approximately 15,000 tons per day  and the management team's experience  with
the  Chicago market. The Company is in the early stages of its operating program
in the north-central Illinois  region. Since the  acquisition of the  Livingston
landfill,  the  Company  has increased  the  waste  volume at  this  landfill by
approximately 1,000  tons  per  day  through  intensified  sales  and  marketing
efforts. Presently, the Company is independently developing one transfer station
and  is  pursuing  the  acquisition of  another.  Additionally,  the  Company is
pursuing the acquisition of collection companies of varying size to increase its
volume of internalized waste which is currently delivered pursuant to  brokerage
contracts.  The Company  is also  seeking to  expand capacity  at the Livingston
landfill. See "-- Operations -- Landfills."
 
    There  can  be  no  assurance  that  the  Company  will  be  successful   in
implementing  its operating program in  any of these existing  markets or in any
future markets.  See  "Risk  Factors --  Availability  of  Acquisition  Targets;
Integration  of Future Acquisitions," "--  Limited Operating History; History of
Losses" "-- Capital Requirements and  Limited Working Capital," "--  Limitations
on Expansion," and "-- Ability to Manage Growth."
 
OPERATIONS
 
    The   Company's  waste  management  operations  include  the  ownership  and
operation of  solid  waste landfills,  transfer  stations and  waste  collection
services.  The  Company's  landfills are  relatively  underutilized  given their
potential size and the fact that  the Company's operating program in a  majority
of  its markets has not yet been completed. The Company believes that all of its
landfills and transfer stations comply with or exceed the requirements  mandated
by  the Subtitle D Regulations and the applicable state regulations. The Company
regularly monitors incoming waste at its  landfills to determine if such  wastes
are in compliance with its permits.
 
LANDFILLS
 
    The  Company currently  owns five  landfill operations  permitted to receive
solid  waste.  These  landfill  operations   are  located  in  Illinois,   Ohio,
Pennsylvania, Kansas and Oklahoma.
 
    Each  of the Company's landfill  operations is located on  land owned by the
Company. The permitted waste streams at each of these landfills include both MSW
and certain special waste  (the type of special  waste varying from landfill  to
landfill).  During the three months ended  March 31, 1996, the Company's captive
waste (including the  Company's collection  operations and  third party  haulers
operating under long-term contracts) constituted an average of approximately 63%
of the solid waste disposed of at its landfills.
 
                                       29
<PAGE>
    The  table  and  landfill  descriptions  below  provide  certain  additional
information, as of May 1, 1996, regarding the five landfill operations that  the
Company currently owns and operates.
 
<TABLE>
<CAPTION>
                                                                       APPROXIMATE ACREAGE        APPROXIMATE
                                                                   ---------------------------  UNUSED PERMITTED
LANDFILLS                                        LOCATION            TOTAL     PERMITTED (1)      AIRSPACE (2)
- ---------------------------------------  ------------------------  ---------  ----------------  ----------------
<S>                                      <C>                       <C>        <C>               <C>
                                                                                                (IN MILLIONS OF
                                                                                                  CUBIC YARDS)
Livingston.............................  Pontiac, IL                     556          255(3)           31.4(3)
Wyandot................................  Upper Sandusky, OH              344           87               6.7
Clarion................................  Leeper, PA                      606           60               4.7
Wheatland..............................  Scammon, KS                      68           55               1.7
Pittsburg County.......................  Pittsburg, OK                    76           15               0.5
                                                                   ---------          ---               ---
    Total..............................                                1,650          472              45.0
                                                                   ---------          ---               ---
                                                                   ---------          ---               ---
</TABLE>
 
- ------------------------
(1) Permitted  acreage, as used in this table and in this Prospectus, represents
    the portion of  the total  acreage on  which disposal  cells and  supporting
    facilities have been constructed (including any that may have been filled or
    capped)  or may be  constructed based upon  an approval issued  by the state
    generally authorizing  the  development  or  siting of  a  landfill  on  the
    acreage.  Prior to actually constructing  and/or operating each new disposal
    cell on  the permitted  acreage, it  may be  necessary, depending  upon  the
    regulatory  requirements of the particular state,  for the Company to obtain
    additional authorizations with respect  to such cell.  The portion of  total
    acreage  that is not currently permitted  acreage is not currently available
    for waste disposal.
(2) Unused permitted  airspace represents  in  cubic yards  the portion  of  the
    permitted  acreage that has not yet been  used for waste disposal but may be
    available for waste  disposal after  certain approvals are  secured and,  in
    some  instances,  new  disposal  cells are  constructed.  Prior  to actually
    constructing and/or  operating a  new  disposal area  or cell  on  permitted
    acreage,  it may be necessary, depending upon the regulatory requirements of
    the particular  state or  locality,  for the  Company to  obtain  additional
    authorizations.
(3) Includes  approximately 200 acres and 26.0 million cubic yards for which the
    Company has received siting approval,  a prerequisite to obtaining a  permit
    for  a landfill  in Illinois.  The Company  submitted its  application for a
    permit in November 1995. There can be no assurance that any permit  received
    will  be for the same specifications  as the application, or that additional
    terms or conditions will not be imposed.
 
    The Company monitors the available  permitted in-place disposal capacity  at
each  of its  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 expanded capacity.  The Company also considers on an
ongoing basis the extent to which it  is advisable, in light of changing  market
conditions  and/or  regulatory requirements,  to seek  to  expand or  change the
permitted waste  streams  at a  particular  landfill  or to  seek  other  permit
modifications.  Set forth below is certain information concerning certain of the
new permits, permit modifications  and approvals that  the Company is  currently
seeking  or expects to seek to enable  it to expand its disposal capacity. There
can be no  assurance that  the Company  will succeed  in obtaining  any of  such
permits,  permit modifications or approvals,  or that additional permits, permit
modifications or approvals will not be required or that additional  requirements
will not be imposed by regulatory agencies.
 
    LIVINGSTON.  The Livingston landfill consists of approximately 556 acres, of
which  approximately  255  are  permitted acres.  There  are  approximately 31.4
million  cubic  yards   of  unused  permitted   or  sited  airspace,   including
approximately 26.0 million cubic yards for which the Company has received siting
approval, a prerequisite to obtaining a permit for a landfill in Illinois. Cells
developed  to date at the Livingston  landfill have been constructed with double
composite liner  systems.  In October  1995,  Livingston received  local  siting
approval  from  the Livingston  County Board  for a  major lateral  and vertical
expansion and re-permitting of
 
                                       30
<PAGE>
the site.  The  local  siting  approval included  authorization  to  expand  the
residual  waste monofill  into a facility  capable of  accepting various special
wastes and  MSW. The  siting  approval also  included authorization  to  develop
additional  acreage north of the existing site.  The net effect of this approval
was to increase the sited  acreage by 200 acres  to approximately 255 acres  and
increase  the  site's available  capacity from  approximately 6.0  million cubic
yards to an  estimated available  capacity of approximately  31.4 million  cubic
yards  as of January  1, 1996. The  Company submitted its  permit application in
November 1995 and such application is pending before the Illinois  Environmental
Protection   Agency.  In  addition,  the  Company  is  seeking  permission  from
applicable regulatory  authorities  to use  single  composite liner  systems  in
constructing   new  cells,  which  the   Company  believes  should  reduce  cell
development costs. The Company anticipates that after the planned expansion, the
Livingston landfill would  have approximately  20 years  of total  site life  at
current disposal levels.
 
    WYANDOT.   The Wyandot landfill consists of approximately 344 acres in three
proximate  locations,  and  the  Company  has  an  option  to  purchase  up   to
approximately 94 additional acres in the vicinity. Approximately 87 of the owned
acres  are permitted,  and there  are approximately  6.7 million  cubic yards of
unused permitted airspace. Cells developed to date at the Wyandot landfill  have
been  constructed with double composite liner systems. The Company plans to seek
permission from applicable regulatory authorities to use alternative designs  in
constructing   new  cells,  which  the   Company  believes  should  reduce  cell
development costs.  The  Company plans  to  apply for  a  permit from  the  Ohio
Environmental  Protection Agency  to expand its  landfill capacity  by using the
valley between two of the hills that are currently permitted for waste disposal,
as well as the option acreage. The Company anticipates that if it exercised  its
option,  obtained the required  permits and constructed  the additional landfill
areas, the Wyandot landfill would have approximately 20 years of total site life
at current disposal levels.
 
    CLARION.  The Clarion landfill consists of approximately 606 acres, of which
approximately 60 are permitted acres. There are approximately 4.7 million  cubic
yards of unused permitted airspace. Cells developed at the Clarion landfill have
been,  and due to regulatory requirements  will continue to be, constructed with
double liner systems. The Clarion landfill  has approximately 13 years of  total
site life at current disposal levels.
 
    WHEATLAND.   The Wheatland landfill consists  of approximately 68 acres, and
the Company has an option to  purchase up to approximately 800 additional  acres
in  the vicinity. Approximately  55 of the  owned acres are  permitted acres and
there are approximately 1.7  million cubic yards  of unused permitted  airspace.
The  Company anticipates that after a  planned expansion, the Wheatland landfill
would have approximately  eight years  of total  site life  at current  disposal
levels.  In addition, the Company is evaluating several alternatives for further
expansion at the Wheatland landfill or for developing a landfill at a  different
site.
 
    PITTSBURG  COUNTY.  The Pittsburg  County landfill consists of approximately
76 acres, of which approximately 15 are permitted acres. There are approximately
0.5 million cubic yards of unused permitted airspace. The Company plans to apply
for a permit in the near future to build a lateral expansion that would increase
permitted capacity to approximately 30 acres. The Company anticipates that after
the planned expansion, the Pittsburg County landfill would have approximately 25
years of total site life at current disposal levels.
 
TRANSFER STATIONS
 
    The Company has an active program  to acquire, develop and operate  transfer
stations  in its landfill  markets. Presently the Company  owns, operates or has
exclusive contracts to  receive waste from  a total of  seven transfer  stations
(three  of which  are owned and  four of  which are under  exclusive contract to
provide their  waste  to  the  Company) at  which  solid  waste  collected  from
individual customers in Company-owned vehicles or waste delivered by third-party
collection  companies  is  unloaded,  compacted,  reloaded  and  transported  to
Company-owned landfills.  The use  of transfer  stations reduces  the  Company's
costs  by improving  its utilization of  collection personnel  and equipment and
increasing the market area that the Company's landfills can serve. See, however,
"Risk Factors -- Extensive Environmental and Land Use Laws and Regulations." The
Company plans  to  expand  into  contiguous or  proximate  markets  through  the
development or acquisition of additional transfer stations in 1996.
 
                                       31
<PAGE>
COLLECTION OPERATIONS
 
    The  Company collects solid  waste from over  85,000 residential, commercial
and industrial  customers  through its  own  collection operations  and  through
brokerage  arrangements with other haulers.  The Company's collection operations
are conducted generally within a 50-mile radius of either its transfer  stations
or  landfills, which  allows the  Company to  serve a  geographic area  within a
radius of approximately 125 miles from its landfills. The Company also contracts
with local generators of  solid waste and  directs the waste  to either its  own
landfill  or to a third-party landfill or  for additional handling at one of its
transfer stations. During the three months  ended March 31, 1996, the  Company's
captive  waste (including  the Company's  collection operations  and third party
haulers  operating  under  long-term   contracts)  constituted  an  average   of
approximately 63% of the solid waste disposed of at its landfills.
 
    Fees  for the  Company's commercial  and industrial  collection services are
determined by  such  factors as  collection  frequency, type  of  equipment  and
containers  furnished, the type,  volume and weight of  the waste collected, the
distance to the  disposal or  processing facility and  the cost  of disposal  or
processing.  A  majority  of  the  Company's  commercial  and  industrial  waste
collection services  are performed  under contracts.  Substantially all  of  the
Company's   municipal  solid  waste  collection  services  are  performed  under
contracts with  municipalities.  These  contracts grant  the  Company  exclusive
rights  to service  all or  a portion  of the  residential homes  in a specified
community or provide a  central repository for  residential waste drop-off.  The
Company  had 46  municipal contracts  in place as  of March  31, 1996. Municipal
contracts in  the  Company's  market  areas  are  typically  awarded,  at  least
initially,  on a competitive bid basis and usually range in duration from one to
three years. Fees are based primarily on the frequency and type of service,  the
distance  to the  disposal or  processing facility and  the cost  of disposal or
processing.  Municipal  collection   fees  are  usually   paid  either  by   the
municipalities  from  tax  revenues or  through  direct service  charges  to the
residents  receiving  the  service.  The  Company  also  provides   subscription
residential collection services directly to households.
 
SALES AND MARKETING
 
    The  Company has a coordinated marketing strategy which is formulated at the
corporate level and implemented at the regional level to achieve its desired mix
of MSW and special waste in each of its regions. For example, certain  employees
of  the Company in its  Ohio and Pennsylvania regions  focus on securing special
waste generated by industrial customers. In addition to competitive pricing, the
Company's  marketing  strategy  emphasizes  quality  service  particularly  with
respect  to rapid turnaround time at  its landfills. Each manager implements the
Company's marketing strategy, which is overseen by senior management.  Depending
upon  the size  of the region  and its customer  mix, each manager  may focus on
commercial, industrial, residential or municipal  accounts to a varying  degree.
The  Company maintains  periodic contact  with all  of its  accounts to increase
customer retention.  Company salespersons  call on  prospective customers  in  a
specified geographic territory.
 
    Since  the Company acquires  its waste collection  operations primarily from
entrepreneurs who generally do  not have independent  sales forces, the  Company
often  retains these  entrepreneurs during  the transition  period following the
acquisition of such operations  to acquaint the Company's  sales force with  the
acquired companies' customer base.
 
    The  Company has a diverse customer base, with no single customer accounting
for more  than 10%  of the  Company's revenues  in 1995.  The Company  does  not
believe  that the  loss of  any single  customer would  have a  material adverse
effect on the Company's results of operation.
 
COMPETITION
 
    The solid waste collection and  disposal business is highly competitive  and
requires  substantial  amounts of  capital. The  Company competes  with numerous
local and regional  companies and, in  selected areas, with  the large  national
waste  management  companies.  The  industry  is  led  by  four  national  waste
companies, WMX  Technologies, Inc.,  Browning-Ferris Industries,  Inc.,  Laidlaw
Waste Systems, Inc. and USA Waste Services, Inc. and includes numerous local and
regional  companies of varying sizes and competitive resources such as Sanifill,
Inc., United Waste  Systems, Inc.,  Allied Waste Industries,  Inc. and  Republic
 
                                       32
<PAGE>
Industries,  Inc.  The large  national companies,  as  well as  a number  of the
regional  companies,  are  significantly  larger  and  have  greater   financial
resources  than the Company.  The Company also competes  with those counties and
municipalities that maintain their own waste collection and disposal operations.
These counties  and municipalities  may  have financial  advantages due  to  the
availability  to  them of  tax revenues  and tax  exempt financing.  The Company
competes primarily by charging competitive prices and offering quality  service.
Competitors may reduce the price of their services in an effort to expand market
share or to win competitively bid municipal contracts.
 
    The  solid waste  collection and  disposal industry  is currently undergoing
significant consolidation, and the Company encounters competition in its efforts
to acquire  landfills  and collection  operations.  Accordingly, it  may  become
uneconomical  for the Company to make further acquisitions or the Company may be
unable to locate or acquire suitable acquisition candidates at price levels  and
on  terms and conditions that the Company considers appropriate, particularly in
markets the Company does not already serve.
 
    Competition in the disposal industry may also be affected by the  increasing
national  emphasis on  recycling and other  waste reduction  programs, which may
reduce the  volume  of  waste  deposited in  landfills.  See  "Risk  Factors  --
Competition" and "-- Alternatives to Landfill Disposal."
 
LIABILITY INSURANCE AND BONDING
 
    The  Company carries a  broad range of  insurance for the  protection of its
assets and operations  that it  believes is  customary to  the waste  management
industry,  including  pollution liability  coverage.  Specifically, each  of the
Company's five landfills has  pollution liability coverage  of $1.0 million  per
occurrence  or $2.0  million in the  aggregate subject to  a $25,000 deductible.
Nevertheless, if the Company  were to incur  liability for environmental  damage
which  exceeds coverage  limits or  is not  covered by  insurance, its business,
financial condition  and results  of operations  could be  materially  adversely
affected.
 
    The  Company is  required to  post a  performance bond  or a  bank letter of
credit or  to provide  other forms  of financial  assurance in  connection  with
closure  and post-closure  obligations with respect  to landfills  and its other
solid waste management operations and may be required to provide such  financial
assurance  in connection with municipal  residential collection contracts. As of
May  7,  1996,  the  Company  had  outstanding  approximately  $15  million   of
performance  bonds and $90,000 in letters of  credit. If the Company were unable
to obtain surety bonds or letters of credit in sufficient amounts, or to provide
other required forms  of financial assurance,  it would be  unable to remain  in
compliance with the Subtitle D Regulations or comparable state requirements and,
among  other things,  might be  precluded from  entering into  certain municipal
collection contracts and obtaining or holding landfill operating permits.
 
EMPLOYEES
 
    At May 24,  1996, the Company  employed approximately 287  employees, 26  of
whom  were managers  or professionals,  201 of  whom were  hourly paid employees
involved in collection, transfer  and disposal operations, and  60 of whom  were
sales,  clerical, data processing or other administrative employees. None of the
Company's employees is represented by unions,  and the Company has no  knowledge
of any organizational efforts among its employees. The Company believes that its
relations with its employees are good.
 
ENVIRONMENTAL REGULATIONS
 
    The  Company is  subject to  extensive and  evolving environmental  laws and
regulations that have  been enacted  in response to  technological advances  and
increased  concern over environmental issues. These regulations are administered
by  the  EPA  and  various   other  federal,  state  and  local   environmental,
transportation, health and safety agencies. The Company believes that there will
continue  to  be increased  regulation,  legislation and  regulatory enforcement
actions related to the solid waste management, collection and disposal industry.
In light  of  these developments,  the  Company attempts  to  anticipate  future
regulatory requirements that might be imposed and plans accordingly to remain in
compliance with the regulatory framework.
 
    In  order to develop and operate a landfill, transfer station or other solid
waste management  facility,  the  Company  typically  must  go  through  several
governmental review processes and obtain one or more permits and often zoning or
other  land use approvals.  These permits and  zoning or land  use approvals are
difficult
 
                                       33
<PAGE>
and time consuming to obtain or to  secure renewal of and sometimes are  opposed
by  various  local  elected  officials  and  citizens'  groups.  Once  obtained,
operating permits  generally must  be periodically  renewed and  are subject  to
modification and revocation by the issuing agency.
 
    The  Company's operation of solid waste  management facilities subject it to
certain operational, monitoring, site maintenance, closure and post-closure  and
financial  assurance obligations which change from  time to time and which could
give rise to increased capital  expenditures and operating costs. In  connection
with  the Company's acquisition of existing  landfills, it is often necessary to
expend considerable time, effort  and money in  complying with the  governmental
review  and permitting process necessary to maintain or increase the capacity of
these landfills. Governmental authorities have  the power to enforce  compliance
with  these laws and  regulations and to  obtain injunctions or  impose civil or
criminal penalties in the case of violations. During the ordinary course of  its
landfill  operations, the  Company has from  time to time  received citations or
notices from such authorities  that such operations are  not in compliance  with
certain  applicable  environmental laws  and regulations.  Upon receipt  of such
citations or notices,  the Company generally  works with the  authorities in  an
attempt  to resolve the issues  raised by such citations  or notices. Failure to
correct the  problems to  the  satisfaction of  the  authorities could  lead  to
curtailed operations or even closure of a landfill.
 
    In order to transport solid waste, it is generally necessary for the Company
to  possess one or more permits from state or local agencies. These permits must
also be periodically renewed and are  subject to modification and revocation  by
the  issuing agency. In addition,  the Company's waste transportation operations
are subject to evolving law and regulations that impose operational, monitoring,
training and safety requirements. The Company operates in substantial conformity
with its permits.
 
    The principal federal, state and  local statutes and regulations  applicable
to the Company's operations are as follows:
 
    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 insure the safe  disposal
of  solid  waste.  RCRA  divides  solid waste  into  two  groups,  hazardous and
non-hazardous. Wastes are generally classified as hazardous wastes if they:  (i)
either  (a)  are specifically  included on  a  list of  hazardous wastes  or (b)
exhibit  certain  hazardous  characteristics;  and  (ii)  are  not  specifically
designated  as  non-hazardous. Wastes  classified  as hazardous  under  RCRA are
subject to much  stricter regulation  than wastes  classified as  non-hazardous.
Among  the wastes  that are specifically  designated as  non-hazardous waste are
household waste and special wastes. These wastes, which will be accepted at  the
Company's  landfills, may contain  substances that may  be as toxic  or prone to
cause contamination as some wastes classified and regulated as hazardous.
 
    In October  1991, the  EPA adopted  the Subtitle  D Regulations.  These  new
regulations  became generally effective in October  1993 (except for certain MSW
landfills accepting less than 100 tons per  day, as to which the effective  date
was  April  9,  1994, and  new  financial assurance  requirements,  which become
effective April 9,  1997) and  include location  restrictions, siting  criteria,
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, these new regulations require that new landfill units
meet more  stringent  liner  design  criteria  (typically,  composite  soil  and
synthetic  liners or two or more synthetic liners) designed to keep leachate out
of groundwater and have extensive collection systems to carry away leachate  for
treatment  prior  to  disposal.  Groundwater wells  must  also  be  installed at
virtually all landfills  to monitor  groundwater quality.  The Company  believes
that  there is no groundwater contamination at its landfills that is material to
its financial  condition. The  regulations also  require, where  threshold  test
levels  are present, that methane gas generated  at landfills be controlled in a
manner that  will  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 upon  it by the  EPA. Each state  is
also  required  to adopt  and implement  a permit  program or  other appropriate
system to ensure  that landfills  within the state  comply with  the Subtitle  D
criteria.   All  states  in  which  the  Company  owns  landfills  have  adopted
regulations or programs as  stringent as or more  stringent than the Subtitle  D
 
                                       34
<PAGE>
Regulations,  which were first proposed in August  1988. All states in which the
Company's landfills  are  located  have  adopted the  required  plans  and  have
submitted  them to the EPA for review. Pennsylvania, Oklahoma, Ohio and Illinois
have each received full EPA approval for their programs, and Kansas has received
partial approval for its program.
 
    THE FEDERAL WATER  POLLUTION CONTROL  ACT OF  1977, AS  AMENDED (THE  "CLEAN
WATER  ACT").  The Clean Water Act establishes rules regulating the discharge of
pollutants from a variety of sources, including solid waste disposal sites, into
waters of the United States. If runoff or collected leachate from the  Company's
landfills  is discharged into waters  of the United States,  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 new  federal storm  water regulations,  which are  designed  to
prevent  possibly  contaminated storm  water from  flowing into  surface waters.
These regulations required that applications for stormwater discharge permits be
submitted  by  October  1992.  The  Company  is  working  with  the  appropriate
regulatory  agencies to ensure that its  facilities are in compliance with Clean
Water Act requirements, particularly as they apply to treatment and discharge of
leachate and  storm  water. The  Company  has secured  or  has applied  for  the
required   discharge   permits  under   the  Clean   Water  Act   or  comparable
state-delegated programs. In  those instances where  the Company's  applications
for  discharge permits  are pending  and a final  discharge permit  has not been
issued, the Company is substantially  in compliance with applicable  substantive
standards  set by the respective states in administering the Clean Water Act. To
ensure  compliance  with  the  Clean   Water  Act  pretreatment  and   discharge
requirements,  the Company has  arranged to discharge  its effluent to municipal
wastewater treatment facilities, except at the Pittsburg County landfill,  where
the  state regulatory agency has allowed recirculation of the Company's leachate
to a lined area of the landfill.
 
    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 from which there has
been,  or  is  threatened,  a  release  of  any  hazardous  substance  into  the
environment. 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, as well  as the generators of the
hazardous  substances  and  the  transporters  who  arranged  for  disposal   or
transportation  of the hazardous  substances. The costs  of CERCLA investigation
and cleanup can be very substantial. Liability under CERCLA does not depend upon
the existence or disposal of "hazardous waste" but can also be founded upon  the
existence  of  even  very  small  amounts of  the  many  hundreds  of "hazardous
substances" listed by the EPA, many of which can be found in household waste. If
the Company were to  be found to  be a responsible party  for a CERCLA  cleanup,
either  at one of the Company's owned or operated facilities, or at a site where
waste transported by  the Company has  been stored or  disposed of, the  Company
could  be held completely  responsible for all  investigative and remedial costs
even if others may also  be liable. CERCLA also  authorizes the imposition of  a
lien in favor of the United States upon all real property subject to or affected
by  a remedial action for  all costs for which a  party is liable. The Company's
ability to obtain reimbursement  from others for their  allocable share of  such
costs  would  be limited  by  the Company's  ability  to find  other responsible
parties and  prove the  extent  of their  responsibility  and by  the  financial
resources of such other parties. In the past, legislation has been introduced in
Congress  to limit  the liability of  municipalities and others  under CERCLA as
generators and transporters of municipal solid waste. Although such  legislation
has not been enacted, if it were to pass it would limit the Company's ability to
seek  full contribution from municipalities for CERCLA cleanup costs even if the
hazardous substances that were released and  caused the need for cleanup at  one
of  the Company's facilities were generated by or transported to the facility by
a municipality.
 
    Continued funding for implementation of RCRA, the Clean Water Act and CERCLA
is scheduled for reauthorization by  Congress this year. Depending upon  whether
and  how Congress acts, it is possible that each of these laws may be changed in
ways that may significantly affect the Company's business.
 
    THE CLEAN  AIR ACT.   The  Clean  Air Act,  including the  1990  amendments,
provides  for regulation, through state  implementation of federal requirements,
of the emission of air pollutants from certain landfills
 
                                       35
<PAGE>
based upon  the  date  of the  landfill  construction  and volume  per  year  of
emissions  of regulated pollutants. The EPA  has recently promulgated new source
performance standards regulating air  emissions of certain regulated  pollutants
(methane   and  non-methane  organic  compounds)   from  municipal  solid  waste
landfills. The  EPA has  also issued  regulations controlling  the emissions  of
particular  regulated  air  pollutants  from  municipal  solid  waste landfills.
Landfills located in areas  designated as having air  pollution problems 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.
 
    Each   of  the   federal  statutes   described  above   contains  provisions
authorizing, under certain  circumstances, the bringing  of lawsuits by  private
citizens to enforce the provisions of the statutes.
 
    THE  OCCUPATIONAL SAFETY AND HEALTH ACT  OF 1970 ("OSHA").  OSHA establishes
employer responsibilities and  authorizes the promulgation  by the  Occupational
Safety  and Health Administration  of occupational health  and safety standards,
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  of those  promulgated standards  may apply  to the  Company's
operations,  including those 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. The  Company's
employees  are  trained  to  respond  appropriately in  the  event  there  is an
accidental spill or release of  packaged asbestos-containing materials or  other
regulated substances during transportation or landfill disposal.
 
    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,  water
and   air  pollution  and,  in  most   cases,  the  siting,  design,  operation,
maintenance, closure  and post-closure  maintenance  of landfills  and  transfer
stations.  In addition, many states have adopted "Superfund" 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
Company  operations. These include  zoning and health  measures that limit solid
waste management  activities  to specified  sites  or activities,  flow  control
provisions that direct the delivery of solid wastes to specific facilities, laws
that  grant the right  to establish franchises for  collection services and then
put out for bid for the right to provide collection services, and bans or  other
restrictions on the movement of solid wastes into a municipality.
 
    Certain  permits and  approvals may  limit the  types of  waste that  may be
accepted at  a landfill  or the  quantity of  waste that  may be  accepted at  a
landfill during a given time period. In addition, certain permits and approvals,
as  well  as  certain state  and  local  regulations, may  limit  a  landfill to
accepting waste  that originates  from  specified geographic  areas or  seek  to
restrict the importation of out-of-state waste or otherwise discriminate against
out-of-state  waste. Generally, restrictions on  the importation of out-of-state
waste have not withstood judicial challenge. However, from time to time  federal
legislation  is proposed  which would  allow individual  states to  prohibit the
disposal of out-of-state waste or to limit the amount of out-of-state waste that
could  be  imported  for  disposal  and  would  require  states,  under  certain
circumstances, to reduce the amounts of waste exported to other states. Although
such  legislation  has not  been  passed by  Congress  yet, if  this  or similar
legislation is enacted, states in which the Company operates landfills could act
to limit or prohibit the importation  of out-of-state waste. Such state  actions
could  materially adversely affect landfills within  those states that receive a
significant portion of waste originating from out-of-state.
 
    In addition, certain states and localities may for economic or other reasons
restrict the exportation  of waste  from their  jurisdiction or  require that  a
specified   amount  of  waste   be  disposed  of   at  facilities  within  their
jurisdiction. In 1994,  the United States  Supreme Court held  unconstitutional,
and  therefore invalid, a local ordinance that sought to impose flow controls on
taking waste out of the locality. However, certain state and local jurisdictions
continue to seek to enforce such restrictions and, in certain cases, the Company
may
 
                                       36
<PAGE>
elect not to challenge such  restrictions based upon various considerations.  In
addition, the aforementioned proposed federal legislation would allow states and
localities to impose certain flow control restrictions. These restrictions could
result in the volume of waste going to landfills being reduced in certain areas,
which  may  materially adversely  affect the  Company's  ability to  operate its
landfills at their full  capacity and/or affect the  prices that can be  charged
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,  the Company's
business, financial  condition and  results of  operations could  be  materially
adversely affected.
 
    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
affect the Company's ability to operate its facilities at their full capacity.
 
PROPERTY AND EQUIPMENT
 
    The  principal  fixed assets  used  by the  Company  in connection  with its
landfill operations are  its landfills  which are described  under "Business  --
Operations  -- Landfills." The  five landfill operations  currently owned by the
Company are situated on sites owned by the Company.
 
    The principal fixed assets used by the Company in its collection  operations
and  transfer  stations are  approximately 47  acres of  land used  for transfer
stations and  other  facilities  related  to  collection  operations  (of  which
approximately  27 acres are owned and 20 acres are leased); and approximately 68
landfill equipment and machinery units,  14,941 collection containers and  small
equipment  units  and 231  trucks and  trailers (in  each instance,  such number
includes owned and leased units).
 
    The Company's corporate  headquarters are located  in Burr Ridge,  Illinois,
where it leases approximately 4,000 square feet of space.
 
LEGAL PROCEEDINGS
 
    In  the  normal course  of its  business and  as a  result of  the extensive
governmental regulation  of the  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  to revoke,  or to  deny renewal  of, an operating
permit held by the Company. From time  to time, the Company also may be  subject
to actions brought by citizens' groups or adjacent landowners in connection with
the  permitting and licensing of its landfills or transfer stations, or alleging
environmental damage  or violations  of the  permits and  licensees pursuant  to
which the Company operates.
 
    Thirty-four  homeowners in the vicinity  of the Company's Wheatland landfill
initiated a  suit in  1993 seeking  actual and  punitive damages  for  nuisance,
trespass  and negligence. The suit is pending  in the District Court of Crawford
County, Kansas. Plaintiffs claim to have suffered a diminution in real  property
values,  lost  past and  future profits  for three  businesses, reduced  use and
enjoyment of  their residences  for individual  plaintiffs, mental  anguish  and
personal  injury. Three plaintiffs have  since voluntarily withdrawn their cases
and two additional plaintiffs  have reached settlement with  the Company for  an
aggregate of $70,000. The case is being defended on behalf of the Company by its
insurance  carrier. The Company has recently received a settlement offer that is
under consideration. The Company is contesting this suit vigorously and believes
that such  suit will  not materially  adversely affect  the business,  financial
condition or results of operations of the Company.
 
    In  addition, the Company is or may become party to various claims and suits
pending for  alleged  damages to  persons  and property,  alleged  violation  of
certain laws and for alleged liabilities arising out of matters occurring during
the  normal  operation  of the  waste  management  business. In  the  opinion of
management, the  liability, if  any,  under these  claims  and suits  would  not
materially  adversely  affect the  business, financial  condition or  results of
operations of the Company.
 
                                       37
<PAGE>
                                   MANAGEMENT
 
DIRECTORS AND EXECUTIVE OFFICERS
 
    The   following  table  sets  forth  information  concerning  the  Company's
executive officers and directors as of May 31, 1996:
 
<TABLE>
<CAPTION>
NAME                                      AGE                                POSITION
- -------------------------------------  ---------  --------------------------------------------------------------
<S>                                    <C>        <C>
David C. Stoller.....................     46      Chairman; Director
Richard De Young.....................     42      President; Director
Scott H. Flamm.......................     41      Senior Vice President; Chief Financial Officer; Director
Richard Kogler.......................     37      Vice President; Chief Operating Officer
Ann L. Straw.........................     43      Vice President; General Counsel; Secretary
Lawrence R. Conrath..................     39      Vice President; Controller
John J. McDonnell....................     41      Vice President -- Engineering
Merril M. Halpern....................     62      Director
A. Lawrence Fagan (1)................     66      Director
Richard T. Henshaw, III (2)..........     57      Director
G.T. Blankenship (2).................     68      Director
Norman Steisel (1)...................     54      Director
</TABLE>
 
- ------------------------
(1) Member of audit committee
 
(2) Member of compensation committee
 
    DAVID C. STOLLER has been Chairman and  a director of the Company since  the
Exchange.  He has served in the same capacities for ADS (since January 1993) and
CDI (since May  1995). He  has also  been (since  August 1992)  the Chairman  of
Charterhouse  Environmental  Capital  Group,  Inc.  ("Charterhouse Environmental
Capital"), which provides management and  consulting services to companies  with
environmental  operations  including  the  Company.  Charterhouse  Environmental
Capital is an affiliate of  Charterhouse. Mr. Stoller was  a partner at the  law
firm  of Milbank, Tweed, Hadley & McCloy (where he remains as "Of Counsel") from
January 1989 through July 1992.
 
    RICHARD DE YOUNG has been President and a director of the Company since  the
Exchange.  He has  also served  as President of  ADS since  April 1994  and as a
director since  September 1993  and was  the Chief  Operating Officer  and  Vice
President  for ADS from January 1993 through April 1994. Mr. De Young has been a
director of CDI  since May  1995. From  June 1982  through January  1993 he  was
employed by Waste Management of North America, a subsidiary of WMX Technologies,
Inc.  ("WMX"),  most  recently as  a  regional Operations  Vice  President, with
responsibility for landfill and collection operations in the Midwest region.
 
    SCOTT H. FLAMM  has been a  Senior Vice President,  and the Chief  Financial
Officer  of the Company since  May 1996 and a  director since the Exchange. From
the Exchange until May 1996, he was Vice Chairman of the Company. He  previously
served  as Vice Chairman  of CDI since May  1995. He has been  a director of ADS
(since January 1993) and CDI (since May  1995). He has also been Executive  Vice
President  of Charterhouse Environmental  Capital since January  1993. From 1988
until January 1993, he was Executive Vice President and Chief Operating  Officer
and a director of Catalyst Energy, an independent power producer.
 
    RICHARD  KOGLER has been a Vice President and the Chief Operating Officer of
the Company since the Exchange. He previously served in the same capacities  for
ADS since May 1995 and he has been President of CDI since May 1995. From October
1984  through  May 1995  Mr.  Kogler was  employed by  WMX,  most recently  as a
regional Operations Vice President.
 
                                       38
<PAGE>
    ANN L. STRAW  has been  Vice President and  General Counsel  of the  Company
since  the Exchange. She previously served in the same capacities for ADS (since
June 1995) and for CDI (since May 1995). She has been the Secretary of CDI since
July 1995. From 1986 through May 1995 she was employed by WMX, most recently  as
a Group Counsel for WMX's Midwest Group.
 
    LAWRENCE  R. CONRATH has  been Controller of the  Company since the Exchange
and a Vice President since May 1996. He previously served as Controller for  ADS
since  May 1994. Prior to joining the  Company, Mr. Conrath spent two years with
United Waste Systems, Inc., as Regional Controller of its Michigan region.  From
1978  through  1990,  Mr.  Conrath  was employed  by  WMX  in  several financial
positions, most recently as  Director of Accounting for  the WMX Urban  Services
Group.
 
    JOHN  J. MCDONNELL  has been  Vice President  -- Engineering  of the Company
since the  Exchange. He  previously  served as  Environmental Engineer  for  ADS
(since  February 1993)  and CDI  (since June  1995). From  1985 through February
1993, Mr.  McDonnell  was employed  by  WMX,  most recently  as  an  Engineering
Manager.
 
    MERRIL  M.  HALPERN  has served  as  a  director of  the  Company  since the
Exchange. Since October 1984, Mr. Halpern has served as Chairman of the Board of
Charterhouse, which  is  a private  investment  firm specializing  in  leveraged
buy-out acquisitions. From 1973 to October 1984, Mr. Halpern served as President
and  Chief Executive Officer of Charterhouse. Mr.  Halpern is also a director of
Dreyer's Grand Ice  Cream, Inc.,  a manufacturer  and distributor  of ice  cream
products;  Del Monte Corporation,  a processor and marketer  of canned foods and
vegetables; Designer  Holdings  Ltd.,  a  developer  and  marketer  of  designer
sportswear  lines ("Designer Holdings"); Insignia  Financial Group, Inc., a real
estate management firm;  and Microwave  Power Devices, Inc.,  a manufacturer  of
highly  linear power  amplifiers primarily  for the  wireless telecommunications
market ("MPD").
 
    A. LAWRENCE  FAGAN  has  served as  a  director  of the  Company  since  the
Exchange.  He has been Executive Vice  President of Charterhouse since 1984. Mr.
Fagan is also a director of Designer Holdings and MPD.
 
    RICHARD T.  HENSHAW,  III has  been  a director  of  the Company  since  the
Exchange. He has served as a director of ADS (since January 1993) and CDI (since
May  1995). Mr. Henshaw has  been a Senior Vice  President of Charterhouse since
1991. Prior thereto he was a Senior Vice President of The Bank of New York.
 
    G.T. BLANKENSHIP has been a director  of the Company since the Exchange.  He
previously served as a director of ADS (since January 1991). Mr. Blankenship has
been a self-employed private investor since 1990.
 
    NORMAN  STEISEL has  been the President  of EnEssCo  Strategies, a strategic
consulting services  firm specializing  in government  regulated markets,  since
January 1994. From January 1990 through December 1993, Mr. Steisel was the First
Deputy  Mayor of  the City  of New  York. Prior  to 1990,  he was  a Senior Vice
President at Lazard Freres  & Co., specializing  in environmental corporate  and
municipal finance.
 
    See   "Certain  Transactions"  and   "Principal  Stockholders"  for  certain
information concerning the Company's directors and executive officers.
 
    Directors of  the Company  hold  office until  the  next annual  meeting  of
stockholders  and until  their successors  are elected  and qualified,  or until
their earlier resignation or removal. All officers are appointed by and serve at
the discretion of  the Board  of Directors.  There are  no family  relationships
among any directors or officers of the Company.
 
    The Board of Directors has established a compensation committee and an audit
committee.  The compensation  committee reviews  executive salaries, administers
any bonus,  incentive  compensation  and  stock option  plans  of  the  Company,
including  the  American Disposal  Services, Inc.  1996  Stock Option  Plan, and
approves the  salaries and  other  benefits of  the  executive officers  of  the
Company.  In addition,  the compensation  committee consults  with the Company's
management regarding pension and other  benefit plans and compensation  policies
and  practices  of the  Company. The  audit  committee reviews  the professional
services provided by  the Company's  independent auditors,  the independence  of
such auditors from management of the Company, the annual financial statements of
the Company and the Company's system of
 
                                       39
<PAGE>
internal  accounting  controls.  The  audit committee  also  reviews  such other
matters with  respect  to  the  accounting,  auditing  and  financial  reporting
practices  and procedures of  the Company as  it may find  appropriate or may be
brought to  its attention,  and meets  from time  to time  with members  of  the
Company's internal audit staff.
 
EMPLOYMENT AGREEMENTS
 
    In  May 1996,  Mr. De  Young entered into  an employment  agreement with the
Company, effective upon closing  of the Offering, under  which he serves as  the
Company's President. The employment agreement provides for an annual base salary
of  $300,000  and terminates  on the  third  anniversary of  the closing  of the
Offering. The employment  agreement provides that  Mr. De Young  will receive  a
$600,000  payment  in  the  event  his  employment  is  terminated  following  a
"change-in-control" of  the Company.  In  addition, if  the Company  retains  an
officer  (other than the Chairman of the Board)  in a capacity that is senior to
Mr. De Young, or if his  responsibilities are materially diminished (other  than
for  cause), Mr.  De Young will  have the  right to terminate  his employment in
which event he  will be entitled  to receive  payments equal to  the greater  of
$750,000  or the  remaining aggregate  amount of  base salary  otherwise payable
under the employment agreement.
 
    In January 1993,  Mr. McDonnell  entered into an  employment agreement  with
ADS,  under which he serves as the  Company's Vice President -- Engineering. The
employment agreement currently provides  for an annual  base salary of  $127,000
and terminates on January 26, 1998.
 
COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION
 
    During  1995, the Board of Directors  determined the compensation of all the
Company's executive officers. Since  May 16, 1996,  all such deliberations  were
made  by the Company's compensation committee. The compensation committee of the
Board of Directors consists of Messrs. Blankenship and Henshaw. No member of the
compensation committee or executive  officer of the  Company has a  relationship
that  would constitute an interlocking  relationship with the executive officers
or directors of another entity.
 
DIRECTOR COMPENSATION
 
    The only directors who  will be compensated for  services as a director  are
Messrs.  Blankenship  and Steisel,  each of  whom will  receive $2,000  for each
meeting of the Board of Directors which he attends and $500 for each meeting  of
a committee of the Board of Directors which he attends.
 
EXECUTIVE COMPENSATION
 
    The  following table sets forth,  for the year ended  December 31, 1995, the
cash compensation paid and  shares underlying options granted  to Mr. De  Young,
the  President of the Company, and each other executive officer whose salary for
such fiscal year was in excess of  $100,000. The Company did not pay bonuses  to
these individuals during the year ended December 31, 1995.
 
                           SUMMARY COMPENSATION TABLE
 
<TABLE>
<CAPTION>
                                                                                            SHARES
                                                                                          UNDERLYING
                                                                             SALARY    OPTIONS GRANTED
                                                                           ----------  ----------------
<S>                                                                        <C>         <C>
Richard De Young, President..............................................  $  230,092        212,109
Scott H. Flamm, Senior Vice President, Chief Financial Officer...........     122,106(1)        83,989
John J. McDonnell, Vice President -- Engineering.........................     109,447         49,205
</TABLE>
 
- ------------------------
(1) Represents  the salary  received since June  1995, when Mr.  Flamm became an
    employee of the Company.
STOCK OPTIONS
 
    The following table contains information concerning the grant of options  to
purchase  shares of the  Company's Common Stock  to each of  the named executive
officers of  the Company  during the  year  ended December  31, 1995.  No  stock
appreciation rights ("SARS") were granted in 1995.
 
                                       40
<PAGE>
                       OPTION GRANTS IN LAST FISCAL YEAR
 
<TABLE>
<CAPTION>
                                     INDIVIDUAL GRANTS
                           -------------------------------------
                                        PERCENT OF
                                           TOTAL                                POTENTIAL REALIZABLE VALUE
                            NUMBER OF     OPTIONS                               AT ASSUMED ANNUAL RATES OF
                           SECURITIES   GRANTED TO                                STOCK APPRECIATION FOR
                           UNDERLYING    EMPLOYEES    EXERCISE                       OPTION TERM (1)
                             OPTIONS     IN FISCAL      PRICE      EXPIRATION   --------------------------
NAME                         GRANTED       YEAR       ($/SHARE)     DATE (2)         5%           10%
- -------------------------  -----------  -----------  -----------  ------------  ------------  ------------
<S>                        <C>          <C>          <C>          <C>           <C>           <C>
Richard De Young.........     212,109       30.41%    $    7.41       8/1/2005  $  2,741,676  $  5,038,778
Scott H. Flamm...........      83,989       12.04%    $    7.41     12/27/2005     1,119,965     2,099,602
John J. McDonnell........       1,263        0.18%    $    7.17      2/23/2002        12,666        19,322
                               47,942        6.87%    $    7.41       8/1/2005       619,688     1,138,891
</TABLE>
 
- ------------------------
(1) Based  on certain assumed rates of  appreciation from an assumed share price
    of $13.00 as  of June  1, 1996. The  potential realizable  values set  forth
    above  do not take into account applicable tax and expense payments that may
    be associated with such option  exercises. Actual realizable value, if  any,
    will be dependent on the future price of the Common Stock on the actual date
    of  exercise, which may be  earlier than the stated  expiration date. The 5%
    and 10%  assumed  annualized rates  of  stock price  appreciation  over  the
    exercise  period of the options used in  the table above are mandated by the
    rules of the  Securities and Exchange  Commission and do  not represent  the
    Company's  estimate or projection of the future price of the Common Stock on
    any date. There  is no  representation either  express or  implied that  the
    stock  price appreciation rates for the Common Stock assumed for purposes of
    this table will actually be achieved.
 
(2) Each option is subject  to earlier termination  if the officer's  employment
    with the Company is terminated.
 
    The  following table sets forth information  for each of the named executive
officers with respect  to the value  of options outstanding  as of December  31,
1995. There were no options exercised during 1995.
 
                         FISCAL YEAR-END OPTION VALUES
 
<TABLE>
<CAPTION>
                                                     NUMBER OF SECURITIES
                                                    UNDERLYING UNEXERCISED       VALUE OF UNEXERCISED
                                                   OPTIONS AT DECEMBER 31,       IN-THE-MONEY OPTIONS
                                                             1995              AT DECEMBER 31, 1995 (1)
                                                  --------------------------  --------------------------
NAME                                              EXERCISABLE  UNEXERCISABLE  EXERCISABLE  UNEXERCISABLE
- ------------------------------------------------  -----------  -------------  -----------  -------------
<S>                                               <C>          <C>            <C>          <C>
Richard De Young................................      26,537        256,205    $ 154,711    $ 1,444,501
Scott H. Flamm..................................      14,822         69,167       82,855        386,644
John J. McDonnell...............................       8,846         63,904       51,572        361,054
</TABLE>
 
- ------------------------
(1) Represents  the difference between an assumed  share price of $13.00 and the
    exercise price  per share  of the  in-the-money options,  multiplied by  the
    number of shares underlying the in-the-money options.
 
1996 STOCK OPTION PLAN
 
    Effective  as of January 1, 1996,  the Company adopted the American Disposal
Services, Inc. 1996 Stock  Option Plan (the  "Plan"). The Plan  is a stock  plan
providing  for  the  grant of  incentive  stock options  and  nonqualified stock
options to key employees and consultants of the Company and its subsidiaries.
 
    ADMINISTRATION.  The Plan is administrated by the compensation committee  of
the Company's Board of Directors (the "Committee"). The Committee determines the
key employees and consultants eligible to receive options and the terms thereof,
all in a manner consistent with the Plan.
 
    SHARES  SUBJECT TO  OPTIONS.   The Plan  provides that  the total  number of
shares of Common Stock that may be subject to options shall be 1,100,000 shares.
Shares subject to  any option which  terminates or expires  unexercised will  be
available for subsequent grants.
 
    OPTIONS.   The Plan  provides for the  grant of incentive  stock options and
nonqualified stock options to  key employees and  consultants, as determined  by
the  Committee. The exercise price of  incentive stock options granted under the
Plan shall be at least 100% of fair market value of the Common Stock on the date
 
                                       41
<PAGE>
of grant and the exercise price of nonqualified stock options shall be at  least
equal  to the par value of the Common Stock. Nonqualified stock options shall be
exercisable for not  more than  ten years, and  incentive stock  options may  be
exercisable  for up to ten years except as otherwise provided. The Committee may
provide that an optionee may pay for  shares upon exercise of an option: (i)  in
cash;  (ii)  in  already-owned shares  of  Common  Stock; (iii)  by  agreeing to
surrender then exercisable options equivalent in value; (iv) by payment  through
a  cash or margin  arrangement with a  broker; (v) in  shares otherwise issuable
upon exercise of the option; or (vi) by such other medium or by any  combination
of (i), (ii), (iii), (iv) or (v) as authorized by the Committee. The grant of an
option  may be accompanied by a reload  option, which gives an optionee who pays
the exercise price of an option with shares of Common Stock an additional option
to acquire the  same number  of shares  that was used  to pay  for the  original
option.  Under certain  circumstances, including termination  of employment upon
retirement, disability or death, the option may be exercised during an  extended
period.
 
    In  connection with the Restructuring, all options to purchase shares of ADS
and CDI were exchanged for options to purchase shares of Common Stock under  the
Plan.
 
                              CERTAIN TRANSACTIONS
 
    Messrs.  Stoller  and  Flamm  are  officers  of  Charterhouse  Environmental
Capital, an affiliate of Charterhouse,  which has been providing management  and
consulting  services to the Company since 1993. These services include: services
relating to the  Company's banking and  other financial relationships  including
assistance  in  connection  with  the  financing  and  refinancing  of corporate
indebtedness; analysis  and assistance  from both  a financial  and  operational
standpoint   in  connection  with  the   expansion  of  the  Company's  business
operations;  assistance  with   strategic  planning;  and   advice  related   to
acquisitions.  Fees paid  by the  Company to  Charterhouse Environmental Capital
were $314,000 in 1993, $515,000 in  1994 and $659,000 in 1995. These  management
and  consulting  services will  be terminated  effective at  the closing  of the
Offering.
 
    On November 16,  1995, the  Company borrowed  $12,500,000 from  Charterhouse
Equity  Partners  II, L.P.  See "Principal  Stockholders."  The loan  matures on
November 15, 1996 and bears interest at a rate per annum equal to the prime rate
plus 3%. The Company  repaid this loan  in June 1996  with borrowings under  the
Credit   Facility.  See  "Management's  Discussion  and  Analysis  of  Financial
Condition and Results of Operations -- Liquidity and Capital Resources."
 
    Effective as of January  1, 1996, the Company  entered into agreements  with
each  of its executive officers providing  that, upon such officer's exercise of
stock options granted  in exchange for  options previously granted  by CDI,  the
Company  will pay to  such officer an  amount equal to  the tax savings actually
recognized by the  Company as a  result of the  deductions attributable to  such
exercise.  In no event  can the payment  to be received  by an executive officer
under such  agreement  exceed the  difference  between the  federal  income  tax
actually paid by such officer as a result of such option exercise and the amount
of  federal income tax that would have been paid by such officer had such option
exercise been taxed at the capital gains rate.
 
    All future  transactions,  including  loans, between  the  Company  and  its
officers,  directors, principal stockholders or their affiliates will be subject
to  approval  of  a  majority  of  the  independent  and  disinterested  outside
directors,  and will be on terms no less  favorable to the Company than could be
obtained from unaffiliated third parties.
 
                                       42
<PAGE>
                             PRINCIPAL STOCKHOLDERS
 
    The   following  table  sets  forth  certain  information  with  respect  to
beneficial ownership of the Common Stock as  of May 31, 1996 and as adjusted  to
reflect  the sale of the Common Stock  offered hereby, by: (i) each person known
by the Company  to be  the beneficial  owner of more  than 5%  of the  Company's
Common  Stock; (ii) each  of the Company's directors;  (iii) the Company's Chief
Executive Officer and each of the  Company's other executive officers; and  (iv)
the Company's directors and executive officers as a group.
 
<TABLE>
<CAPTION>
                                                                              PERCENTAGE OWNERSHIP (1)
                                                                 NUMBER OF
                                                                  SHARES     --------------------------
                                                                BENEFICIALLY   PRIOR TO       AFTER
            NAME AND ADDRESS OF BENEFICIAL OWNERS                  OWNED       OFFERING      OFFERING
- --------------------------------------------------------------  -----------  ------------  ------------
<S>                                                             <C>          <C>           <C>
Charterhouse Environmental Holdings, L.L.C. (2)...............   1,867,289         32.9%         22.2%
Charterhouse Equity Partners II, L.P. (3).....................   2,511,973         44.2%         29.8%
CDI Equity, LLC (4)...........................................     644,109         11.3%          7.6%
David C. Stoller (5)..........................................      60,271          1.1%        *
Richard De Young (5)(6).......................................      38,540        *             *
Scott H. Flamm (5)............................................      23,764        *             *
Merril M. Halpern (7).........................................      --            --            --
A. Lawrence Fagan (7).........................................      --            --            --
Richard T. Henshaw, III (7)...................................      --            --            --
G.T. Blankenship (8)..........................................     100,935          1.8%          1.2%
Norman Steisel................................................      --            --            --
Richard Kogler (5)............................................       1,177        *             *
Ann L. Straw (5)..............................................         777        *             *
John J. McDonnell (5)(9)......................................      13,441        *             *
Lawrence R. Conrath (5)(10)...................................       5,264        *             *
All directors and executive officers as a group (12 persons)
 (5)..........................................................     244,169          4.3%          2.9%
</TABLE>
 
- ------------------------
 *  Less than one percent.
 
 (1)Assumes  no exercise of the  Underwriters' over-allotment option to purchase
    up to  412,500 additional  shares  of Common  Stock  from the  Company.  See
    "Underwriting."
 
 (2)The   address  of  Charterhouse  Environmental  Holdings,  L.L.C.  ("Charter
    Environmental") is c/o Charterhouse  Group International, Inc., 535  Madison
    Avenue, New York, New York 10022. Charterhouse Equity Partners, L.P. ("CEP")
    and  StollerCo  Partners,  L.P.  ("StollerCo") are  the  members  of Charter
    Environmental, with a majority of the ownership interests being held by CEP.
    The general partner of  CEP is CHUSA Equity  Investors, L.P., whose  general
    partner   is  Charterhouse  Equity,  Inc.,   a  wholly-owned  subsidiary  of
    Charterhouse. As a  result of  the foregoing, all  of the  shares of  Common
    Stock  held by Charter Environmental would, for purposes of Section 13(d) of
    the Securities Exchange Act of 1934, be considered to be beneficially  owned
    by  Charterhouse. Messrs.  Stoller and Flamm  are partners  of StollerCo and
    disclaim beneficial ownership of  shares of Common Stock  held of record  by
    Charter Environmental.
 
 (3)The  address  of Charterhouse  Equity Partners  II, L.P.  ("CEP II")  is c/o
    Charterhouse Group International,  Inc., 535 Madison  Avenue, New York,  New
    York  10022. The  general partner  of CEP II  is CHUSA  Equity Investors II,
    L.P., whose general partner is Charterhouse Equity II, Inc., a  wholly-owned
    subsidiary  of Charterhouse. As a result of the foregoing, all of the shares
    of Common Stock held by CEP II  would, for purposes of Section 13(d) of  the
    Securities  Exchange Act of 1934, be  considered to be beneficially owned by
    Charterhouse.
 
                                       43
<PAGE>
 (4)The address  of CDI  Equity, LLC  is c/o  Aetna Life  and Casualty  Company,
    Conveyor  IG6U,  151  Farmington Avenue,  Hartford,  Connecticut  06156. The
    member interests in CDI Equity, LLC are  held as follows: 99% by Aetna  Life
    Insurance  Company and 1% by CDI  Equity, Inc., a wholly-owned subsidiary of
    Aetna Life and Casualty Company.
 
 (5)Includes options exercisable  within 60  days of  May 31,  1996 to  purchase
    57,804,  36,073, 22,232, 1,177,  12,446, 4,767 and  777 shares granted under
    the American  Disposal Services,  Inc.  1996 Stock  Option Plan  to  Messrs.
    Stoller,  De  Young, Flamm,  Kogler, McDonnell  and  Conrath and  Ms. Straw,
    respectively. For purposes of computing the percentage of outstanding shares
    beneficially held by each person or group of persons named above on a  given
    date,  any security which  such person or  persons has the  right to acquire
    within 60 days after such  date is deemed to  be beneficially owned for  the
    purpose of computing the percentage ownership of such person or persons, but
    is  not deemed to be outstanding for the purpose of computing the percentage
    ownership of any person.
 
 (6)Includes 2,467 shares held jointly by Mr. De Young and his wife.
 
 (7)Merril M. Halpern and  A. Lawrence Fagan  are executive officers,  directors
    and stockholders of Charterhouse and Richard T. Henshaw, III is an executive
    officer  of Charterhouse. Messrs.  Halpern, Fagan and  Henshaw each disclaim
    beneficial ownership of  the shares  of Common Stock  beneficially owned  by
    Charterhouse.
 
 (8)  Includes  7,995  shares  held  by Mr.  Blankenship's  wife,  of  which Mr.
    Blankenship disclaims beneficial ownership.
 
 (9) Includes 996 shares held by Mr. McDonnell's minor children.
 
(10) Includes 498 shares held jointly by Mr. Conrath and his wife.
 
                                       44
<PAGE>
                          DESCRIPTION OF CAPITAL STOCK
 
    The Company's  authorized capital  stock consists  of 20,000,000  shares  of
Common Stock, par value $.01 per share, and 5,000,000 shares of Preferred Stock,
par value $.01 per share, (the "Preferred Stock"). The discussions of the Common
Stock and Preferred Stock here and elsewhere in this Prospectus are qualified in
their  entirety by  reference to:  (i) the  Certificate of  Incorporation of the
Company, as  amended, a  copy of  which  has been  filed as  an exhibit  to  the
Registration  Statement  of  which  this  Prospectus is  a  part;  and  (ii) the
applicable Delaware law.
 
COMMON STOCK
 
    Holders of Common Stock are entitled to one vote for each share held on  all
matters  submitted to a vote  of stockholders and do  not have cumulative voting
rights. Stockholders casting a plurality  of votes of the stockholders  entitled
to  vote in an election of directors may elect all of the directors standing for
election.  Holders  of  Common  Stock  are  entitled  to  receive  ratably  such
dividends,  if any, as  may be declared by  the Board of  Directors out of funds
legally available  therefor,  subject to  any  preferential dividend  rights  of
Preferred  Stock  that may  be issued  at such  future time  or times.  Upon the
liquidation, dissolution or  winding up of  the Company, the  holders of  Common
Stock  are entitled to receive  ratably the net assets  of the Company after the
payment of all debts and  other liabilities and subject  to the prior rights  of
Preferred  Stock that may be  outstanding at such time.  Holders of Common Stock
have  no  preemptive,  subscription,   redemption  or  conversion  rights.   The
outstanding  shares of Common Stock are, and  the shares of Common Stock offered
by the Company in the Offering will be, when issued and paid for, fully paid and
nonassessable. The rights, preferences and privileges of holders of Common Stock
are subject to the rights  of the holders of shares  of any series of  Preferred
Stock which the Company may designate and issue in the future.
 
    As  of May 31, 1996, there were 5,676,901 shares of Common Stock outstanding
and held of record by approximately  65 stockholders after giving effect to  the
Restructuring.  After giving effect  to the issuance of  the 2,750,000 shares of
Common Stock  offered  by  the  Company hereby  (assuming  no  exercise  of  the
Underwriters'  over-allotment option), there will  be 8,426,901 shares of Common
Stock outstanding upon the closing of the Offering.
 
UNDESIGNATED PREFERRED STOCK
 
    The Company's Certificate  of Incorporation authorizes  5,000,000 shares  of
Preferred Stock. The Board of Directors has the authority to issue the Preferred
Stock  in one or more series and  to fix the rights, preferences, privileges and
restrictions thereof,  including  dividend  rights,  conversion  rights,  voting
rights,  terms of redemption, redemption prices, liquidation preferences and the
number of shares  constituting any  series or  the designation  of such  series,
without  further vote or  action by the stockholders.  The issuance of Preferred
Stock may  have the  effect of  delaying, deferring  or preventing  a change  in
control  of  the Company  without  further action  by  the stockholders  and may
adversely affect the voting and other rights of the holders of Common Stock. The
issuance of  Preferred Stock  with voting  and conversion  rights may  adversely
affect  the voting power of  the holders of Common  Stock, including the loss of
voting control of others. At present, the  Company has no plans to issue any  of
the Preferred Stock.
 
DELAWARE ANTI-TAKEOVER LAW AND CERTAIN CHARTER PROVISIONS
 
    The  Company is subject  to Section 203 of  the Delaware General Corporation
Law ("Section 203") which, subject  to certain exceptions, prohibits a  Delaware
corporation  from  engaging  in  any business  combination  with  any interested
stockholder for a period of three years following the date that such stockholder
became an interested stockholder, unless: (i)  prior to such date, the board  of
directors  of the  corporation approved either  the business  combination or the
transaction  which   resulted  in   the  stockholder   becoming  an   interested
stockholder;  (ii) upon  consummation of the  transaction which  resulted in the
stockholder becoming an interested stockholder, the interested stockholder owned
at least 85% of the voting stock of the corporation outstanding at the time  the
transaction  commenced (for  the purposes  of determining  the number  of shares
outstanding, under  Delaware law,  those shares  owned (x)  by persons  who  are
directors  and also officers and  (y) by employee stock  plans in which employee
participants do not have  the right to  determine confidentially whether  shares
held  subject to  the plan will  be tendered in  a tender or  exchange offer are
excluded from the  calculation); or  (iii) on or  subsequent to  such date,  the
business
 
                                       45
<PAGE>
combination is approved by the board of directors and authorized at an annual or
special  meeting of stockholders, and not by written consent, by the affirmative
vote of at least 66 2/3% of the  outstanding voting stock which is not owned  by
the interested stockholder.
 
    Section  203 defines  a business combination  to include: (i)  any merger or
consolidation involving the corporation and the interested stockholder; (ii) any
sale, transfer, pledge or other disposition of 10% or more of the assets of  the
corporation  involving  the  interested stockholder;  (iii)  subject  to certain
exceptions, any transaction  which results in  the issuance or  transfer by  the
corporation  of any stock of the corporation to the interested stockholder; (iv)
any transaction involving the corporation which has the effect of increasing the
proportionate share  of the  stock of  any class  or series  of the  corporation
beneficially  owned by  the interested  stockholder; or  (v) the  receipt by the
interested stockholder  of  the  benefit of  any  loans,  advances,  guarantees,
pledges  or other financial benefits provided  by or through the corporation. In
general, Section 203 defines an interested  stockholder as any entity or  person
beneficially  owning  15%  or  more  of  the  outstanding  voting  stock  of the
corporation  and  any  entity  or  person  affiliated  with  or  controlling  or
controlled by such entity or person.
 
    Certain  provisions  of  the  Company's  Certificate  of  Incorporation  and
Delaware law may have a significant effect in delaying, deferring or  preventing
a change in control of the Company and may adversely affect the voting and other
rights of other holders of Common Stock. In particular, the ability of the Board
of  Directors to issue Preferred Stock  without further stockholder approval may
have the effect of delaying, deferring or preventing a change in control of  the
Company and may adversely affect the voting and other rights of other holders of
Common Stock.
 
REGISTRATION RIGHTS
 
    After  the Offering,  the holders  of 5,032,861  shares of  Common Stock and
warrants to purchase 215,455 shares of Common Stock will be entitled to  certain
rights with respect to the registration of such shares under the Securities Act.
Under  the terms of the  agreements between the Company  and the holders of such
registrable  securities,  if  the  Company  proposes  to  register  any  of  its
securities  under the  Securities Act,  either for  its own  account or  for the
account of other security holders  exercising registration rights, such  holders
are  entitled to notice of such registration  and are entitled to include shares
of such Common  Stock therein. The  holders of such  registrable securities  may
also  require  the Company  on  two separate  occasions  to file  a registration
statement under the  Securities Act  at the  Company's expense  with respect  to
their  shares of Common Stock,  and the Company is  required to use its diligent
reasonable efforts  to effect  such registration.  These rights  are subject  to
certain  conditions and limitations, among them the right of the underwriters of
an offering to limit the number of shares included in such registration.
 
TRANSFER AGENT AND REGISTRAR
 
    The Transfer Agent and Registrar for  the Common Stock is the Trust  Company
of  New Jersey, 35 Journal Square, Jersey  City, New Jersey 07306. Its telephone
number is (201) 420-2621.
 
                        SHARES ELIGIBLE FOR FUTURE SALE
 
    Prior to the Offering, there has been no market for the Common Stock. Future
sales of  substantial  amounts  of  Common Stock  in  the  public  market  could
adversely affect prevailing market prices.
 
    Upon  completion  of  the  Offering,  the  Company  will  have approximately
8,426,901 shares  of  Common Stock  outstanding  (assuming no  exercise  of  the
Underwriters'  overallotment option). Of these shares, the 2,750,000 shares sold
in the Offering will be freely transferable without restriction or  registration
under  the  Securities  Act, except  for  any  shares purchased  by  an existing
"affiliate" of the Company, as  that term is defined  by the Securities Act  (an
"Affiliate"), which shares will be subject to the resale limitations of Rule 144
adopted under the Securities Act.
 
    After  the Offering,  the holders of  5,032,861 shares of  Common Stock, and
warrants to purchase 215,455 shares of Common Stock, will be entitled to certain
rights with respect to the registration of such shares under the Securities Act.
See "Description of Capital Stock -- Registration Rights." Registration of  such
 
                                       46
<PAGE>
shares  under the  Securities Act  would result  in such  shares becoming freely
tradeable without  restriction  under  the Securities  Act  (except  for  shares
purchased   by   Affiliates)  immediately   upon   the  effectiveness   of  such
registration.
 
    All officers and  directors and  holders of 5%  or more  of the  outstanding
shares  of Common Stock  prior to the  Offering have agreed  not to offer, sell,
contract to sell or grant any option to purchase or otherwise dispose of  Common
Stock of the Company for 180 days after the date of this Prospectus, without the
prior  written consent of Oppenheimer &  Co., Inc. Additionally, the Company has
agreed not to offer, sell, contract to  sell or otherwise dispose of any  shares
of   Common  Stock  or  any  securities   convertible  into  or  exercisable  or
exchangeable for Common Stock or any rights to acquire Common Stock for a period
180 days after the date of this Prospectus, without the prior written consent of
Oppenheimer & Co., Inc. subject to certain limited exceptions.
 
    In general, under Rule 144 as  currently in effect, beginning 90 days  after
the  Offering, a person (or person whose  shares are aggregated) who owns shares
that were  purchased from  the Company  (or any  Affiliate) at  least two  years
previously,  including persons who  may be deemed Affiliates  of the Company, is
entitled to sell within any three-month period a number of shares that does  not
exceed  the greater of 1% of the then outstanding shares of the Company's Common
Stock or the average weekly trading volume of the Company's Common Stock in  the
Nasdaq  National Market  during the  four calendar  weeks preceding  the date on
which notice of the  sale is filed with  the Securities and Exchange  Commission
(the  "Commission"). Sales under Rule 144 are  also subject to certain manner of
sale provisions,  notice requirements  and the  availability of  current  public
information  about  the  Company.  Any  person  (or  persons  whose  shares  are
aggregated) who is not deemed  to have been an Affiliate  of the Company at  any
time  during  the 90  days  preceding a  sale, and  who  owns shares  within the
definition of "restricted securities"  under Rule 144  under the Securities  Act
that  were purchased from  the Company (or  any Affiliate) at  least three years
previously, would be  entitled to  sell such  shares under  Rule 144(k)  without
regard  to the volume limitations, manner of sale provisions, public information
requirements or notice requirements. It is anticipated that after the expiration
of such 90 day period no shares of Common Stock will be immediately eligible for
sale under Rule 144.
 
    The Company intends to  file a registration  statement under the  Securities
Act  covering approximately 1,100,000 shares of  Common Stock issued or reserved
for issuance under the  Plan. See "Management --  1996 Stock Option Plan."  Such
registration  statement is  expected to be  filed prior  to the end  of the 1996
calendar year and will automatically become effective upon filing.  Accordingly,
shares  registered under such registration statement  pursuant to the Plan will,
subject to Rule 144  volume limitations applicable  to Affiliates, be  available
for  sale in the open market, except to  the extent that such shares are subject
to vesting restrictions.  At May 31,  1996, options to  purchase 869,615  shares
were issued and outstanding under the Plan.
 
                                       47
<PAGE>
                                  UNDERWRITING
 
    Subject  to  the terms  and conditions  of  the Underwriting  Agreement, the
Company has agreed to sell to each of the Underwriters named below, and each  of
the  Underwriters,  for  whom  Oppenheimer  &  Co.,  Inc.  and  CS  First Boston
Corporation are acting as Representatives, has severally agreed to purchase from
the Company, the respective number of shares of Common Stock set forth  opposite
the name of such Underwriter below:
 
<TABLE>
<CAPTION>
                                                                                            NUMBER OF
                                                                                            SHARES OF
UNDERWRITER                                                                                COMMON STOCK
- ----------------------------------------------------------------------------------------  --------------
<S>                                                                                       <C>
Oppenheimer & Co., Inc..................................................................
CS First Boston Corporation.............................................................
 
                                                                                          --------------
    Total...............................................................................      2,750,000
                                                                                          --------------
                                                                                          --------------
</TABLE>
 
    The Underwriters propose to offer the shares of Common Stock directly to the
public  initially at the  public offering price  set forth on  the cover page of
this Prospectus and in part to certain  securities dealers at such price less  a
concession of $      per share. The Underwriters may allow, and such dealers may
reallow,  a concession not in excess of $       per share to certain brokers and
dealers. After the shares of Common Stock  are released for sale to the  public,
the  offering price and other selling terms may  from time to time be changed by
the Representatives. The Underwriters are obligated  to take and pay for all  of
the  shares of  Common Stock  offered hereby  (other than  those covered  by the
over-allotment option described below) if any are taken.
 
    The Company has granted the Underwriters an option, exercisable for up to 30
days after  the date  of this  Prospectus, to  purchase up  to an  aggregate  of
412,500  additional shares of Common Stock  to cover over-allotments, if any. If
the Underwriters exercise such option,  the Underwriters have severally  agreed,
subject  to certain  conditions, to  purchase approximately  the same percentage
thereof that the number of  shares to be purchased by  each of them as shown  in
the  foregoing  table bears  to  the 2,750,000  shares  of Common  Stock offered
hereby. The Underwriters may exercise such option only to cover  over-allotments
made  in connection with the sale of  the shares of Common Stock offered hereby.
The Representatives have advised the Company that the Underwriters do not intend
to confirm sales in  excess of 5%  of the shares offered  hereby to any  account
over which they exercise discretionary authority.
 
    The  Company has agreed to indemnify the representatives of the Underwriters
and the  several Underwriters  against certain  liabilities, including,  without
limitation liabilities under the Securities Act.
 
    The  Company's officers, directors and  certain stockholders, option holders
and warrant holders who beneficially own an aggregate of approximately 6,761,971
shares of Common Stock have agreed not to offer, sell, contract to sell,  pledge
or  grant any  option to purchase  or otherwise  dispose of Common  Stock of the
Company for 180 days after the date of this Prospectus without the prior written
consent of Oppenheimer &  Co., Inc. The  Company has also  agreed not to  offer,
sell,  contract to sell, or  otherwise dispose of any  shares of Common Stock or
any securities convertible into or exercisable or exchangeable for Common  Stock
or  any rights to acquire Common Stock (other than shares issuable upon exercise
of outstanding options and warrants) for a period of 180 days after the date  of
this  Prospectus, without the prior written  consent of Oppenheimer & Co., Inc.,
subject to certain limited exceptions. See "Shares Eligible for Future Sale."
 
                                       48
<PAGE>
    Prior to the Offering, there has been no public market for the Common  Stock
of  the  Company.  Consequently,  the  initial  public  offering  price  will be
determined by negotiations  between the Company  and the Representatives.  Among
the  factors  to  be  considered  in  such  negotiations  are  prevailing market
conditions, the results  of operations  of the  Company in  recent periods,  the
market  capitalizations and stages  of development of  other companies which the
Company and  the  Representatives  believe  to be  comparable  to  the  Company,
estimates  of the business  potential of the  Company, the present  state of the
Company's development and other factors deemed relevant by the Representatives.
 
                                 LEGAL MATTERS
 
    The legality of the Common Stock offered hereby will be passed upon for  the
Company  by Proskauer Rose Goetz & Mendelsohn  LLP, 1585 Broadway, New York, New
York 10036. Certain legal  matters will be passed  upon for the Underwriters  by
Morgan, Lewis & Bockius LLP, 101 Park Avenue, New York, New York 10178.
 
                                    EXPERTS
 
    The  consolidated financial statements  of the Company  at December 31, 1994
and 1995 and for each  of the two years in  the period ended December 31,  1995,
appearing  in  this  Prospectus and  the  Registration Statement  of  which this
Prospectus forms a  part have  been audited by  Ernst &  Young LLP,  independent
auditors, as set forth in their report thereon appearing elsewhere herein and in
the  Registration Statement, and are included in reliance upon such report given
upon the authority of such firm as experts in accounting and auditing.
 
    The consolidated  statements of  operations, stockholders'  equity and  cash
flows  of the Company for  the fiscal year ended  December 31, 1993, included in
this Prospectus and elsewhere in the Registration Statement have been audited by
Arthur Andersen  LLP,  independent public  accountants,  as indicated  in  their
reports  with  respect thereto,  and are  included herein  in reliance  upon the
authority of said  firm as  experts in accounting  and auditing  in giving  said
reports.
 
    In  1994 the Company appointed Ernst &  Young LLP to replace Arthur Andersen
LLP as  its principal  accountants. The  Company dismissed  Arthur Andersen  LLP
during 1994. The reports of Arthur Andersen LLP on the 1993 financial statements
of  the Company did not contain an adverse opinion or disclaimer of opinion, nor
were they qualified  or modified as  to uncertainty, audit  scope or  accounting
principles.  The decision  to change accountants  was approved  by the Company's
Board of  Directors. There  were no  disagreements with  the former  accountants
during the two fiscal years preceding their replacement or during the subsequent
interim   period  preceding  their  replacement  on  any  matter  of  accounting
principles or practices,  financial statement  disclosure or  auditing scope  or
procedures,  which  disagreements, if  not resolved  to the  former accountants'
satisfaction, would have caused them to make reference to the subject matter  of
the disagreement in connection with their reports.
 
                             ADDITIONAL INFORMATION
 
    The  Company has filed with the  Commission a Registration Statement on Form
S-1 (the "Registration Statement") under the Securities Act with respect to  the
Common  Stock offered hereby. This Prospectus, which is part of the Registration
Statement, does not contain all of the information set forth in the Registration
Statement and the  exhibits and schedules  thereto, certain items  of which  are
omitted as permitted by the rules and regulations of the Commission. For further
information  with respect  to the Company  and the Common  Stock offered hereby,
reference is made to the Registration Statement and to the financial statements,
schedules, and exhibits  filed as  a part thereof.  The Registration  Statement,
including all schedules and exhibits thereto, may be inspected without charge at
the  public reference facilities  maintained by the  Commission at its principal
office at Judiciary Plaza, 450 Fifth  Street, N.W., Washington, D.C. and at  the
Commission's regional offices at 7 World Trade Center, 13th floor, New York, New
York and
 
                                       49
<PAGE>
500  West Madison Street, Suite 1400, Chicago, Illinois. Copies of such material
may be obtained from the Public Reference Section of the Commission at 450 Fifth
Street, N.W., Washington, D.C. 20549 at prescribed rates.
 
    Statements contained  in  this Prospectus  concerning  the contents  of  any
contract  or other document are not  necessarily complete and, in each instance,
reference is made to  the copy of  such contract or other  document filed as  an
exhibit  to the  Registration Statement or  otherwise with  the Commission, each
such statement being qualified in all respects by such reference.
 
                                       50
<PAGE>
                         INDEX TO FINANCIAL STATEMENTS
 
<TABLE>
<CAPTION>
                                                                                                               PAGE
                                                                                                             ---------
<S>                                                                                                          <C>
AMERICAN DISPOSAL SERVICES, INC. AND SUBSIDIARIES:
  CONSOLIDATED FINANCIAL STATEMENTS
  Report of Independent Auditors...........................................................................     F-2
  Report of Independent Public Accountants.................................................................     F-3
  Consolidated Balance Sheets at December 31, 1995 and 1994................................................     F-4
  Consolidated Statements of Operations for the years ended December 31, 1995,
   1994 and 1993...........................................................................................     F-5
  Consolidated Statements of Stockholders' Equity for the years ended December 31,
   1995, 1994 and 1993.....................................................................................     F-6
  Consolidated Statements of Cash Flows for the years ended December 31, 1995, 1994 and 1993...............     F-7
  Notes to Consolidated Financial Statements...............................................................     F-8
 
  UNAUDITED INTERIM CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
  Condensed Consolidated Balance Sheet at March 31, 1996...................................................    F-18
  Condensed Consolidated Statements of Operations for the three months ended March 31, 1996 and 1995.......    F-19
  Condensed Consolidated Statements of Cash Flows for the three months ended March 31, 1996 and 1995.......    F-20
  Notes to Condensed Consolidated Financial Statements.....................................................    F-21
 
  UNAUDITED PRO FORMA CONSOLIDATED FINANCIAL STATEMENTS
  Pro Forma Consolidated Statement of Operations for the year ended December 31, 1995......................    F-22
 
ACQUIRED COMPANIES (CDI ACQUISITION):
  ENVIRITE CORPORATION, MSG FACILITIES
  Report of Independent Auditors...........................................................................    F-24
  Statements of Net Assets Acquired at December 31, 1994 and January 1, 1994...............................    F-28
  Statements of Revenue and Direct Operating Expenses for the fiscal years ended December 31, 1994 and
   January 1, 1994.........................................................................................    F-26
  Notes to Financial Statements............................................................................    F-27
 
  Report of Independent Auditors...........................................................................    F-30
  Statement of Revenue and Direct Operating Expenses for the period ended November 15, 1995................    F-31
  Notes to Financial Statements............................................................................    F-32
</TABLE>
 
                                      F-1
<PAGE>
                         REPORT OF INDEPENDENT AUDITORS
 
The Board of Directors
American Disposal Services, Inc.
 
    We  have audited  the accompanying  consolidated balance  sheets of American
Disposal Services,  Inc. as  of December  31,  1995 and  1994, and  the  related
consolidated  statements of operations, 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 1995 and  1994 financial statements  referred to  above
present fairly, in all material respects, the consolidated financial position of
American  Disposal Services,  Inc. as  of December  31, 1995  and 1994,  and the
consolidated results of  its operations and  its cash flows  for the years  then
ended in conformity with generally accepted accounting principles.
 
                                          ERNST & YOUNG LLP
 
Chicago, Illinois
March 22, 1996 , except as to Note 10 for
which the date is May 30, 1996
 
                                      F-2
<PAGE>
                       REPORT OF INDEPENDENT ACCOUNTANTS
 
To the Stockholders of
American Disposal Services, Inc.:
 
    We  have  audited the  accompanying  consolidated statements  of operations,
stockholders' equity  and cash  flows of  American Disposal  Services, Inc.  and
subsidiaries  for the year  ended December 31,  1993. 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 results  of operations and cash flows of  American
Disposal  Services, Inc. and subsidiaries for  the year ended December 31, 1993,
in conformity with generally accepted accounting principles.
 
                                          ARTHUR ANDERSEN LLP
 
Oklahoma City, Oklahoma
April 15, 1994
 
                                      F-3
<PAGE>
                        AMERICAN DISPOSAL SERVICES, INC.
                          CONSOLIDATED BALANCE SHEETS
                             (DOLLARS IN THOUSANDS)
                                     ASSETS
 
<TABLE>
<CAPTION>
                                                                                                 DECEMBER 31,
                                                                                             ---------------------
                                                                                                1995       1994
                                                                                             ----------  ---------
<S>                                                                                          <C>         <C>
Current assets:
  Cash and cash equivalents................................................................  $    6,383  $     548
  Cash held in escrow......................................................................         156        191
  Trade receivables -- Net of allowance for doubtful accounts of $476 and $408.............       6,331      2,560
  Prepaid expenses.........................................................................         686         97
  Inventory................................................................................         312        184
                                                                                             ----------  ---------
Total current assets.......................................................................      13,868      3,580
Property and equipment, net................................................................      81,250     17,062
Other assets:
  Cost over fair value of net assets of acquired businesses, net of accumulated
   amortization of $823 and $451...........................................................      15,739     13,569
  Other intangible assets, net of accumulated amortization of $305 and $455................       1,081      1,435
  Debt issuance costs, net of accumulated amortization of $71 and $234.....................         815      1,002
  Other....................................................................................       1,940        909
                                                                                             ----------  ---------
                                                                                             $  114,693  $  37,557
                                                                                             ----------  ---------
                                                                                             ----------  ---------
 
                                       LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
  Note payable to stockholder..............................................................  $   12,500  $      --
  Accounts payable.........................................................................       3,185        881
  Accrued liabilities......................................................................       2,360      1,440
  Deferred revenues........................................................................       1,202        948
  Current portion of long-term debt and capital lease obligations..........................       3,440      2,548
                                                                                             ----------  ---------
Total current liabilities..................................................................      22,687      5,817
Long-term debt and capital lease obligations, net of current portion.......................      48,789     18,487
Accrued environmental and landfill costs...................................................       6,214      1,121
Deferred income taxes......................................................................       1,240         --
Redeemable preferred stock of subsidiary...................................................       1,908         --
Stockholders' equity:
  Common stock, $.01 par value, 20,000,000 shares authorized; shares issued and
   outstanding; 1995 -- 5,676,901; 1994 -- 2,382,345.......................................          57         24
  Preferred stock, $.01 par value, 5,000,000 shares authorized; none issued and outstanding
   in 1995 and 1994........................................................................          --         --
  Warrants outstanding.....................................................................         107        107
  Additional paid-in capital...............................................................      41,590     16,157
  Accumulated deficit......................................................................      (7,899)    (4,156)
                                                                                             ----------  ---------
                                                                                                 33,855     12,132
                                                                                             ----------  ---------
                                                                                             $  114,693  $  37,557
                                                                                             ----------  ---------
                                                                                             ----------  ---------
</TABLE>
 
                            See accompanying notes.
 
                                      F-4
<PAGE>
                        AMERICAN DISPOSAL SERVICES, INC.
                     CONSOLIDATED STATEMENTS OF OPERATIONS
                 (DOLLARS IN THOUSANDS, EXCEPT PER SHARE DATA)
 
<TABLE>
<CAPTION>
                                                                                  YEARS ENDED DECEMBER 31,
                                                                          ----------------------------------------
                                                                              1995          1994          1993
                                                                          ------------  ------------  ------------
<S>                                                                       <C>           <C>           <C>
Revenues................................................................  $     30,004  $     18,517  $      7,730
Cost of operations......................................................        17,286        12,647         5,750
Selling, general, and administrative expenses...........................         5,882         4,910         1,646
Depreciation and amortization...........................................         6,308         3,226         1,166
                                                                          ------------  ------------  ------------
Operating income (loss).................................................           528        (2,266)         (832)
Interest expense........................................................        (3,030)       (1,497)         (417)
Interest income.........................................................           189             2            35
                                                                          ------------  ------------  ------------
Loss before income taxes and extraordinary item.........................        (2,313)       (3,761)       (1,214)
Income tax benefit (expense)............................................          (332)        1,372           391
                                                                          ------------  ------------  ------------
Loss before extraordinary item..........................................        (2,645)       (2,389)         (823)
Extraordinary item -- Gain (loss) on early retirement of debt...........          (908)           --            74
                                                                          ------------  ------------  ------------
Net loss................................................................        (3,553)       (2,389)         (749)
Preferred stock dividend requirement of subsidiary......................          (190)           --            --
                                                                          ------------  ------------  ------------
Net loss applicable to common stockholders..............................  $     (3,743) $     (2,389) $       (749)
                                                                          ------------  ------------  ------------
                                                                          ------------  ------------  ------------
 
Per common share:
  Loss before extraordinary item........................................  $       (.76) $       (.91) $       (.51)
  Extraordinary item....................................................          (.24)           --           .04
                                                                          ------------  ------------  ------------
  Net loss..............................................................  $      (1.00) $       (.91) $       (.47)
                                                                          ------------  ------------  ------------
                                                                          ------------  ------------  ------------
 
Weighted average common stock and common stock equivalent shares
 outstanding............................................................     3,729,055     2,612,749     1,607,586
                                                                          ------------  ------------  ------------
                                                                          ------------  ------------  ------------
</TABLE>
 
                            See accompanying notes.
 
                                      F-5
<PAGE>
                        AMERICAN DISPOSAL SERVICES, INC.
                CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY
                             (DOLLARS IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                            COMMON STOCK                       ADDITIONAL                    TOTAL
                                       -----------------------    WARRANTS       PAID-IN    ACCUMULATED   STOCKHOLDERS'
                                         SHARES      AMOUNT      OUTSTANDING     CAPITAL      DEFICIT        EQUITY
                                       ----------  -----------  -------------  -----------  ------------  ------------
<S>                                    <C>         <C>          <C>            <C>          <C>           <C>
Balance -- December 31, 1992.........     212,288   $       2     $      --     $   1,105    $   (1,018)   $       89
Issuance of common stock, net of
 issuance costs......................   1,887,664          19            --        13,065            --        13,084
Issuance of common stock warrants....          --          --           107            --            --           107
Net loss.............................          --          --            --            --          (749)         (749)
                                       ----------         ---         -----    -----------  ------------  ------------
Balance -- December 31, 1993.........   2,099,952          21           107        14,170        (1,767)       12,531
Issuance of common stock, net of
 issuance costs......................     282,393           3            --         1,987            --         1,990
Net loss.............................          --          --            --            --        (2,389)       (2,389)
                                       ----------         ---         -----    -----------  ------------  ------------
Balance -- December 31, 1994.........   2,382,345          24           107        16,157        (4,156)       12,132
Issuance of common stock, net of
 issuance costs......................   3,294,556          33            --        25,433            --        25,466
Net loss.............................          --          --            --            --        (3,553)       (3,553)
Dividends on preferred stock of
 subsidiary..........................          --          --            --            --          (190)         (190)
                                       ----------         ---         -----    -----------  ------------  ------------
Balance -- December 31, 1995.........   5,676,901   $      57     $     107     $  41,590    $   (7,899)   $   33,855
                                       ----------         ---         -----    -----------  ------------  ------------
                                       ----------         ---         -----    -----------  ------------  ------------
</TABLE>
 
                            See accompanying notes.
 
                                      F-6
<PAGE>
                        AMERICAN DISPOSAL SERVICES, INC.
                     CONSOLIDATED STATEMENTS OF CASH FLOWS
                             (DOLLARS IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                                      YEARS ENDED DECEMBER 31,
                                                                                  ---------------------------------
                                                                                     1995       1994        1993
                                                                                  ----------  ---------  ----------
<S>                                                                               <C>         <C>        <C>
OPERATING ACTIVITIES
Net loss........................................................................  $   (3,553) $  (2,389) $     (749)
Adjustments to reconcile net loss to net cash provided by (used in) operating
 activities:
  Extraordinary item, net.......................................................         908         --         (74)
  Depreciation and amortization.................................................       6,308      3,226       1,166
  Provision for environmental and landfill costs................................         292         48          39
  Deferred income taxes.........................................................          47     (1,372)       (391)
  Changes in current assets and liabilities, net of effects from acquisitions:
    Trade receivables...........................................................        (340)      (625)     (1,714)
    Prepaid expenses, cash held in escrow and other assets......................         (33)      (361)       (560)
    Inventory...................................................................        (128)       (96)        (68)
    Accounts payable and accrued liabilities....................................       1,846        235       1,226
    Deferred revenue............................................................         254        210         737
                                                                                  ----------  ---------  ----------
Net cash provided by (used in) operating activities.............................       5,601     (1,124)       (388)
INVESTING ACTIVITIES
Capital expenditures............................................................      (6,173)    (5,600)     (5,592)
Cost of acquisitions............................................................     (62,201)      (580)    (17,469)
                                                                                  ----------  ---------  ----------
Net cash used in investing activities...........................................     (68,374)    (6,180)    (23,061)
FINANCING ACTIVITIES
Net proceeds from issuances of common stock.....................................      25,466      1,990      12,885
Net proceeds from issuance of preferred stock of subsidiary.....................       1,908         --          --
Preferred stock dividend requirements of subsidiary.............................        (190)        --          --
Proceeds from issuance of long-term debt........................................      45,068      6,319      19,836
Repayments of indebtedness......................................................      (2,698)    (2,511)     (6,301)
Debt issuance costs.............................................................        (946)       (80)       (849)
                                                                                  ----------  ---------  ----------
Net cash provided by financing activities.......................................      68,608      5,718      25,571
                                                                                  ----------  ---------  ----------
Net increase (decrease) in cash and cash equivalents............................       5,835     (1,586)      2,122
Cash and cash equivalents, at beginning of year.................................         548      2,134          12
                                                                                  ----------  ---------  ----------
Cash and cash equivalents at end of year........................................  $    6,383  $     548  $    2,134
                                                                                  ----------  ---------  ----------
                                                                                  ----------  ---------  ----------
Supplemental cash flow information:
  Cash paid for interest........................................................  $    2,515  $   1,426  $      331
  Cash paid for income taxes....................................................         478         --          --
</TABLE>
 
                            See accompanying notes.
 
                                      F-7
<PAGE>
                        AMERICAN DISPOSAL SERVICES, INC.
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                        DECEMBER 31, 1995, 1994 AND 1993
 
1.  FORMATION AND BASIS OF PRESENTATION
    ADS,  Inc. (ADS)  was organized January  15, 1991, to  acquire, develop, and
operate nonhazardous municipal  solid waste disposal,  collection, and  transfer
operations  and provide nonhazardous solid waste disposal management services to
commercial, industrial, and residential customers.
 
    County Disposal, Inc. (County) was incorporated  on April 27, 1995, for  the
purpose  of acquiring certain net assets  of Envirite Corporation (Envirite). On
April 28, 1995,  Envirite and County  entered into an  Asset Purchase  Agreement
whereby  County agreed to purchase from Envirite certain landfill facilities and
waste transportation  and collection  equipment  located in  Livingston  County,
Illinois,  and Wyandot County,  Ohio; all of the  issued and outstanding capital
stock of  County  Environmental Services,  Inc.,  a wholly-owned  subsidiary  of
Envirite,  which owned and operated a landfill facility and waste transportation
and collection equipment  located in Clarion  County, Pennsylvania; and  certain
related assets and assumption of certain liabilities.
 
    Effective  January 1,  1996, the  stockholders of  ADS and  County exchanged
their shares  for shares  of a  newly created  holding company  by the  name  of
American  Disposal  Services,  Inc.  (the  Company).  This  share  exchange (the
Exchange) qualifies  as  a  transfer  of companies  under  common  control  and,
accordingly,  the transaction  has been  accounted for  at historical  cost in a
manner similar to pooling of interests accounting. The financial statements have
been prepared as if this Exchange had occurred as of December 31, 1992.
 
2.  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
PRINCIPLES OF CONSOLIDATION
 
    The consolidated financial  statements include the  accounts of the  Company
and  its subsidiaries.  All significant  intercompany balances  and transactions
have been eliminated.
 
CONCENTRATION OF CREDIT RISK
 
    Financial instruments that potentially subject the Company to  concentration
of  credit risks  consist primarily of  trade receivables. Credit  risk on trade
receivables 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.
 
FAIR VALUE OF FINANCIAL INSTRUMENTS
 
    Trade  receivables, trade payables, and debt obligations are carried at cost
which approximates fair value.
 
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 AND CASH EQUIVALENTS
 
    Cash  and cash  equivalents represent cash  in banks  and liquid investments
with original maturities of three months or less.
 
CASH HELD IN ESCROW
 
    Cash held  in  escrow represents  cash  held  in banks  restricted  to  fund
obligations incurred in acquiring businesses.
 
INVENTORY
 
    Inventory  is stated at  the lower of  cost (first in,  first out method) or
market and consists principally of equipment parts, materials, and supplies.
 
                                      F-8
<PAGE>
                        AMERICAN DISPOSAL SERVICES, INC.
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                        DECEMBER 31, 1995, 1994 AND 1993
 
2.  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
PROPERTY AND EQUIPMENT
 
    Property and equipment are  recorded at cost.  Depreciation of equipment  is
computed  using the straight-line method over  the estimated useful lives of the
respective assets as follows:
 
<TABLE>
<S>                                    <C>
Vehicles and equipment...............  3 to 12 years
                                            25 to 30
Buildings............................          years
</TABLE>
 
    Expenditures for  major  renewals  are  capitalized,  and  expenditures  for
routine maintenance and repairs are charged to expense as incurred.
 
    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  these activities,
including  legal,  engineering,  construction  of  landfill  improvements,  cell
development costs, and the direct costs of Company personnel dedicated for these
purposes.  Preparation  costs  for  individual secure  land  disposal  cells are
recorded in property and equipment and amortized as the airspace is filled.
 
INTANGIBLE ASSETS
 
    The cost over fair value of  net assets of acquired businesses is  amortized
on  the  straight-line  method  over  periods  not  exceeding  40  years.  Other
intangible assets, substantially all of which  are covenants not to compete  and
customer  lists, are amortized on the  straight-line method over their estimated
lives, typically no more  than 12 years. Amortization  expense for fiscal  years
1995,  1994, and 1993  related to intangible assets  was $1.4 million, $600,000,
and $345,000,  respectively. In  1995,  the Company  determined not  to  enforce
certain covenants not to compete which arose from 1993 transactions with the net
book value of such covenants of $505,000, fully written-off and included in 1995
amortization expense.
 
DEFERRED ACQUISITION COSTS
 
    The  Company capitalizes  engineering, legal,  accounting, and  other direct
costs paid to  outside parties that  are incurred in  connection with  potential
acquisitions.  The Company, however, routinely  evaluates such capitalized costs
and charges  to  expense those  relating  to abandoned  acquisition  candidates.
Indirect  acquisition  costs,  such  as  executive  salaries,  general corporate
overhead, and other corporate  services are expensed  as incurred. Net  deferred
acquisition  costs,  included  in other  intangible  assets,  were approximately
$370,000 and $379,000 at December 31, 1995 and 1994, respectively.
 
ACCRUED ENVIRONMENTAL AND LANDFILL COSTS
 
    Accrued environmental and landfill  costs represent landfill accruals  which
are  provided for  environmental compliance  costs and  closure and post-closure
costs. These accruals are based on accounting estimates by management determined
primarily  from  the  results  of   engineering  studies  and  reviews  and   on
interpretation  of  the  technical  standards  of  the  Environmental Protection
Agency's Subtitle  D regulations,  or the  approved state  counterpart, and  the
proposed  air emissions  standards under  the Clean  Air Act  as they  are being
applied on a state-by-state basis.  The Company typically provides accruals  for
these  costs as permitted  airspace of such facilities  is consumed. 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.  Certain of  these accrued environmental  and landfill  costs,
principally  capping, leachate collection  and removal, and  methane gas control
and recovery, are  operating and  maintenance costs  to be  incurred during  the
30-year  period after the facility closes,  but are accrued during the operating
life of  the site  in accordance  with the  landfill operation  requirements  of
Subtitle  D  and  the proposed  air  emissions standards.  An  environmental and
landfill cost accrual is provided as a liability assumed for purchased  landfill
operations  based on permitted  airspace consumed prior  to the acquisition date
and is included in the purchase price  allocation (see Note 3). The Company  has
estimated that, as of December 31,
 
                                      F-9
<PAGE>
                        AMERICAN DISPOSAL SERVICES, INC.
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                        DECEMBER 31, 1995, 1994 AND 1993
 
2.  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
1995,  post-closure expenses, including cap maintenance, groundwater monitoring,
methane gas control and  recovery and leachate treatment/disposal  for up to  30
years  after  closure  in  certain cases,  will  approximate  $11.3  million. In
addition, the Company has estimated that, as of December 31, 1995, closure costs
expected to occur during the operating  lives of these facilities' useful  lives
will  approximate  $28.4  million.  These accruals  are  reviewed  by management
periodically and revised  prospectively for  any significant  changes in  future
cost estimates.
 
INCOME TAXES
 
    Deferred  tax  assets and  liabilities are  determined based  on differences
between 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.
 
DEFERRED REVENUES
 
    Revenues billed  prior  to the  performance  of services  are  deferred  and
recorded  as income in  the period in  which the related  services are rendered,
generally over a three-month period.
 
RECLASSIFICATIONS
 
    Certain 1994 and 1993 financial statement amounts have been reclassified  to
conform with the 1995 presentation.
 
EARNINGS PER SHARE
 
    Earnings  per share is based on the  weighted average number of common stock
and common stock equivalent shares outstanding during each year and  incremental
shares from the assumed exercise of options and warrants granted within one year
of the initial public offering computed using the treasury stock method.
 
3.  ACQUISITIONS
    As  described in Note  1, the Company  acquired three landfills  and a waste
collection operation (the  Envirite Acquisition) during  1995. The Company  also
acquired   three  waste  collection  operations  during  1994,  and  nine  waste
collection operations, a transfer station and a landfill during 1993.
 
    The operating results of these businesses since the dates of acquisition are
included in  the consolidated  statements of  operations. All  of the  Company's
acquisitions  were  accounted for  as purchases  and, accordingly,  the purchase
prices have been allocated to the net assets acquired based upon fair values  at
the  dates of acquisition with the residual  amounts allocated to cost over fair
value of net assets  acquired. The purchase prices  allocated to the net  assets
acquired were as follows (in thousands):
 
<TABLE>
<CAPTION>
                                                                    1995       1994       1993
                                                                  ---------  ---------  ---------
<S>                                                               <C>        <C>        <C>
Property and equipment..........................................  $  62,288  $     580  $   9,837
Accounts receivable and inventory...............................      3,363         --         --
Other assets....................................................      1,664         --      1,995
Cost over fair value of net assets acquired.....................      3,060         --     12,003
Acquisition price financed by sellers...........................         --         --     (3,500)
Total liabilities assumed.......................................     (8,174)        --     (2,829)
                                                                  ---------  ---------  ---------
    Total cash paid.............................................  $  62,201  $     580  $  17,506
                                                                  ---------  ---------  ---------
                                                                  ---------  ---------  ---------
</TABLE>
 
                                      F-10
<PAGE>
                        AMERICAN DISPOSAL SERVICES, INC.
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                        DECEMBER 31, 1995, 1994 AND 1993
 
3.  ACQUISITIONS (CONTINUED)
    The  pro forma unaudited results of  operations for the years ended December
31, 1995 and  1994, assuming  the Envirite  Acquisition occurred  at January  1,
1994, were as follows (in thousands, except per share data):
 
<TABLE>
<CAPTION>
                                                                        1995          1994
                                                                    ------------  ------------
<S>                                                                 <C>           <C>
Revenues..........................................................  $     44,500  $     37,338
Operating loss....................................................          (276)       (5,009)
Net loss applicable to common stockholders........................        (6,788)       (8,367)
Pro forma loss per share of common stock..........................         (1.82)        (3.20)
Weighted average common stock and common stock equivalent shares
 outstanding......................................................     3,729,055     2,612,749
</TABLE>
 
4.  PROPERTY AND EQUIPMENT
    Property and equipment are summarized as follows (in thousands):
 
<TABLE>
<CAPTION>
                                                                            DECEMBER 31,
                                                                       -----------------------
                                                                         1995         1994
                                                                       ---------  ------------
<S>                                                                    <C>        <C>
Land.................................................................  $   5,038   $      280
Landfills............................................................     66,529        8,382
Buildings............................................................      2,695          659
Vehicles and equipment...............................................     14,335       10,956
                                                                       ---------  ------------
                                                                          88,597       20,277
Less: Accumulated depreciation and amortization......................     (7,347)      (3,215)
                                                                       ---------  ------------
                                                                       $  81,250   $   17,062
                                                                       ---------  ------------
                                                                       ---------  ------------
</TABLE>
 
                                      F-11
<PAGE>
                        AMERICAN DISPOSAL SERVICES, INC.
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                        DECEMBER 31, 1995, 1994 AND 1993
 
5.  OBLIGATIONS
    Obligations,  which approximate  fair value,  are summarized  as follows (in
thousands):
 
<TABLE>
<CAPTION>
                                                                              DECEMBER 31,
                                                                          --------------------
                                                                            1995       1994
                                                                          ---------  ---------
<S>                                                                       <C>        <C>
Long-term debt:
  Term loan, Bank of America............................................  $  20,000  $      --
  Revolving loan, Bank of America.......................................     10,847         --
  Term loan A, ING Capital Corporation..................................     12,525      9,300
  Term loan B, ING Capital Corporation..................................      4,000         --
  Acquisition loan, ING Capital Corporation.............................         --      8,573
  Revolving loan, ING Capital Corporation...............................      2,423      2,050
  Other long-term borrowings, with interest ranging from 7.0% to
   11.0%................................................................      1,285      1,003
Capital lease obligations:
  Capital lease obligations with interest and principal due monthly
   through 1999, at various interest rates ranging from 6.0% to 9.5%,
   secured by equipment.................................................      1,149        109
                                                                          ---------  ---------
                                                                             52,229     21,035
  Less: Current portion.................................................      3,440      2,548
                                                                          ---------  ---------
  Long-term obligations, net of current portion.........................  $  48,789  $  18,487
                                                                          ---------  ---------
                                                                          ---------  ---------
</TABLE>
 
    On September 21, 1995, County, a  subsidiary of the Company, entered into  a
credit  agreement with Bank of America that provides for borrowings of up to $45
million to  finance  acquisitions  and provide  working  capital.  The  facility
consists  of a $20 million term loan and  a $25 million revolving loan, which is
currently limited to $20  million until certain  earnings requirements are  met.
The  term loan bears a rate of interest  per annum based on the London Interbank
Offered Rate (LIBOR) plus  3.75% (9.1% at  December 31, 1995)  or the higher  of
prime  plus 1.25% (9.75%  at December 31,  1995) or the  Federal Funds Rate plus
1.75% (7.5% at December 31, 1995) and is due in quarterly installments beginning
in December 1996 through September 2000. The revolving loan bears interest based
on LIBOR plus  3.25% (8.6% at  December 31, 1995)  or the higher  of prime  plus
0.75% (9.25% at December 31, 1995) or at the Federal Funds Rate plus 1.25% (7.0%
at  December 31,  1995) and  matures on September  21, 1998.  The revolving loan
provides for commitment fees  of 1/2% per annum  on the unused portions  payable
monthly  in arrears. The facility is secured  by substantially all of the assets
of County. Under the terms of the credit agreement, County is subject to various
debt  covenants,  including   maintenance  of  certain   financial  ratios   and
restrictions  on  additional indebtedness,  payment  of cash  dividends, capital
expenditures, rental obligations,  and asset dispositions.  In conjunction  with
obtaining  the credit agreement, the Company granted 97,575 warrants to purchase
shares of common stock of the Company at $7.41 per share.
 
    On October  13, 1995,  ADS, a  subsidiary of  the Company,  extinguished  an
existing  credit  agreement and  entered into  a new  credit agreement  with the
Internationale Nederlanden  (U.S.)  Capital  Corporation,  as  agent  (ING),  to
provide  for borrowings of up  to approximately $23 million.  As a result of the
early  extinguishment  of  the  credit  agreement,  the  Company  recognized  an
extraordinary  loss of $907,720 representing  unamortized deferred debt issuance
cost. The facility consists of  a $12.5 million term  loan A, $4.0 million  term
loan  B, and a $6.4 million revolving loan. Term loan A bears a rate of interest
per annum based on the London Interbank  Offered Rate (LIBOR) plus 3% (8.35%  at
December  31, 1995), or the  higher of prime plus  1.50% (10.00% at December 31,
1995), or Federal Funds Rate plus 1.75% (7.50% at December 31, 1995), and is due
in quarterly installments through December 31, 2000. Term loan B bears a rate of
 
                                      F-12
<PAGE>
                        AMERICAN DISPOSAL SERVICES, INC.
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                        DECEMBER 31, 1995, 1994 AND 1993
 
5.  OBLIGATIONS (CONTINUED)
interest per annum based on  the higher of prime  plus 3.00% (11.5% at  December
31,  1995) or Federal Funds  Rate plus 3.25% (9.00%  at December 31, 1995, which
can be fixed at March 31, 1996, at the Company's option, and is due in quarterly
installments beginning March 31, 1998  through December 31, 2000. The  revolving
loan  bears interest at  the higher of  prime plus 1.25%  (9.75% at December 31,
1995), or Federal Funds Rate plus 1.5% (7.25% at December 31, 1995), and matures
on December 31, 2000.  The revolving loans provide  for commitment fees of  1/2%
per annum on the unused portions payable monthly in arrears. The ING facility is
secured  by substantially all of  the assets of ADS. Under  the terms of the ING
credit  agreement,  ADS  is  subject   to  various  debt  covenants,   including
maintenance   of  certain  financial  ratios   and  restrictions  on  additional
indebtedness,  payment   of  cash   dividends,  capital   expenditures,   rental
obligations, and asset dispositions.
 
    Maturities  of long-term  obligations (excluding  capital lease obligations)
are as follows (in thousands):
 
<TABLE>
<S>                                                                  <C>
1996...............................................................  $   2,929
1997...............................................................      6,252
1998...............................................................     18,613
1999...............................................................      8,386
2000 and thereafter................................................     14,900
                                                                     ---------
                                                                     $  51,080
                                                                     ---------
                                                                     ---------
</TABLE>
 
    At December 31, 1995,  the Company had  outstanding a $12,500,000  unsecured
note  payable to a stockholder, which was issued on November 16, 1995 and is due
November 15, 1996, bearing an  annual interest rate of  prime plus 3% (11.5%  at
December   31,  1995).  Interest  expense  relating  to  this  note  payable  of
approximately $180,000 was incurred in 1995.
 
                                      F-13
<PAGE>
                        AMERICAN DISPOSAL SERVICES, INC.
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                        DECEMBER 31, 1995, 1994 AND 1993
 
6.  INCOME TAXES
    Deferred income taxes reflect the  net tax effects of temporary  differences
between  the amount of assets and liabilities for financial reporting and income
tax purposes. Significant components  of the Company's  deferred tax assets  and
liabilities were as follows (in thousands):
 
<TABLE>
<CAPTION>
                                                                                DECEMBER 31,
                                                                            --------------------
                                                                              1995       1994
                                                                            ---------  ---------
                                                                               (IN THOUSANDS)
<S>                                                                         <C>        <C>
Deferred tax assets arising from:
  Net operating loss carryforwards........................................  $   3,111  $   2,311
  Bad debt reserves.......................................................         41        118
  Closure and post-closure costs..........................................        421         91
  Amortization of intangibles.............................................        550         76
                                                                            ---------  ---------
    Total deferred tax assets.............................................      4,123      2,596
Valuation allowance.......................................................     (2,323)      (310)
                                                                            ---------  ---------
    Net deferred tax assets...............................................      1,800      2,286
Deferred tax liabilities arising from:
  Property and equipment..................................................      2,898      2,172
  Amortization of intangibles.............................................         84         74
  Capital leases..........................................................         32         11
  Discharge of indebtedness...............................................         26         29
                                                                            ---------  ---------
    Total deferred tax liabilities........................................      3,040      2,286
                                                                            ---------  ---------
    Net deferred tax liability............................................  $  (1,240) $      --
                                                                            ---------  ---------
                                                                            ---------  ---------
</TABLE>
 
    At December 31, 1995, the Company has net operating loss (NOL) carryforwards
of  approximately $8.4 million for income tax purposes that expire in years 2006
to 2010.
 
    The utilization  of  the NOL  carryforwards  is limited  by  future  taxable
earnings  generated at  the subsidiary level.  The Company  recorded a valuation
allowance against  the  NOL  carryforwards  to reflect  uncertainty  as  to  the
utilization  of such benefit for  financial reporting purposes, of approximately
$2.3 million at December 31, 1995.
 
    Significant components of the income tax expense (benefits) were as  follows
(in thousands):
 
<TABLE>
<CAPTION>
                                                                              DECEMBER 31,
                                                                     -------------------------------
                                                                       1995       1994       1993
                                                                     ---------  ---------  ---------
<S>                                                                  <C>        <C>        <C>
Current:
  Federal..........................................................  $     141  $      --  $      --
  State............................................................        144         --         --
                                                                     ---------  ---------  ---------
                                                                           285         --         --
Deferred:
  Federal..........................................................         38     (1,205)      (330)
  State............................................................          9       (167)       (61)
                                                                     ---------  ---------  ---------
                                                                            47     (1,372)      (391)
                                                                     ---------  ---------  ---------
    Total provision................................................  $     332  $  (1,372) $    (391)
                                                                     ---------  ---------  ---------
                                                                     ---------  ---------  ---------
</TABLE>
 
                                      F-14
<PAGE>
                        AMERICAN DISPOSAL SERVICES, INC.
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                        DECEMBER 31, 1995, 1994 AND 1993
 
6.  INCOME TAXES (CONTINUED)
    A  reconciliation from the statutory income tax rate to the effective income
tax rate was as follows:
 
<TABLE>
<CAPTION>
                                                                            DECEMBER 31,
                                                              ----------------------------------------
                                                                  1995          1994          1993
                                                              ------------  ------------  ------------
<S>                                                           <C>           <C>           <C>
Federal statutory income tax rate...........................      (34.0)%       (34.0)%       (34.0)%
Effect of:
  State taxes, net of federal tax effect....................        3.1          (2.9)         (3.5)
  Net operating loss with no benefit........................       39.6           0.1           3.6
  Other, net................................................        1.6           0.3           1.7
                                                                  -----         -----         -----
    Effective tax rate......................................       10.3%        (36.5)%       (32.2)%
                                                                  -----         -----         -----
                                                                  -----         -----         -----
</TABLE>
 
7.  RELATED PARTIES
    During 1995, the  Company entered  into a  new management  agreement with  a
stockholder.  The agreement  specifies certain  services to  be rendered  to the
Company in exchange for annual management  fees of $700,000. Management fees  of
approximately  $659,000, $515,000, and $314,000 were incurred in 1995, 1994, and
1993, respectively.
 
8.  COMMITMENTS AND CONTINGENCIES
 
ENVIRONMENTAL AND REGULATORY REQUIREMENTS
 
    The business  and  activities of  the  Company  are or  may  become  heavily
regulated   by   the  Environmental   Protection   Agency,  the   Department  of
Transportation,  the   Interstate  Commerce   Commission,  and   various   state
environmental  and transportation regulatory authorities. The Company is subject
to various statutes and regulations which  include, but are not limited to,  the
Resource  Conservation and  Recovery Act  of 1976,  the Federal  Water Pollution
Control  Act,  the  Comprehensive   Environmental  Response,  Compensation   and
Liability  Act of 1980,  the Clean Air  Act, and various  state regulations. The
full impact  of these  laws and  regulations and  adoption of  new statutes  and
regulations with respect to the Company's facilities and operations is uncertain
and  could have material  adverse effects on the  Company's business, results of
operations, and financial condition in that  the Company: (i) could be  required
to  incur additional  expenses in  compliance efforts;  (ii) might  be unable to
comply,  forcing  the  Company  to  cease  operations;  and  (iii)  could  incur
additional  liability for past  operation of acquired  assets. These regulations
may also impose restrictions on the  Company's operations, such as limiting  the
expansion   of  disposal  facilities,  limiting   or  banning  the  disposal  of
out-of-state waste  or  certain other  categories  of waste,  or  mandating  the
disposal of local refuse.
 
    Although  the Company believes it is  in substantial compliance with current
regulatory requirements, because of heightened political and public concern over
environmental issues, companies  in the waste  disposal industry, including  the
Company, may become subject to judicial and administrative proceedings involving
federal, state, or local agencies in the normal course of business.
 
    The  Company has obtained pollution  liability insurance covering claims for
sudden or gradual onset environmental damage at its landfill sites. The  Company
carries  a  comprehensive general  liability  insurance policy  which management
considers adequate to protect its assets and operations from other risks.
 
    The Company also may  be subject to claims  for personal injury or  property
damage  arising out of motor vehicle accidents involving its trucks. The Company
currently carries insurance with policy  limits which management believes to  be
sufficient  to cover these  risks. If the  Company were to  incur liabilities in
excess of  its insurance  limits,  its financial  condition could  be  adversely
affected.
 
                                      F-15
<PAGE>
                        AMERICAN DISPOSAL SERVICES, INC.
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                        DECEMBER 31, 1995, 1994 AND 1993
 
8.  COMMITMENTS AND CONTINGENCIES (CONTINUED)
    In  connection with three of the Company's existing landfills (one in 1994),
the Company  has  provided  financial assurance  bonds  for  approximately  $6.3
million  at December 31, 1995 from  a financial institution to provide financial
assurance that closure and post-closure expenses  will be met in the event  that
the Company is not able to fulfill its closure and post-closure obligations.
 
    At  December  31, 1995,  future minimum  lease payments  under noncancelable
lease obligations are as follows (in thousands):
 
<TABLE>
<CAPTION>
                                                                            CAPITAL    OPERATING
                                                                            LEASES      LEASES
                                                                           ---------  -----------
<S>                                                                        <C>        <C>
1996.....................................................................  $     598   $   1,548
1997.....................................................................        431       1,101
1998.....................................................................        192       1,015
1999.....................................................................        104         852
2000 and thereafter......................................................         --         379
                                                                           ---------  -----------
    Total minimum lease payments.........................................      1,325   $   4,895
                                                                                      -----------
                                                                                      -----------
Less: Amount representing interest.......................................        176
                                                                           ---------
    Present value of minimum lease payments..............................  $   1,149
                                                                           ---------
                                                                           ---------
</TABLE>
 
    Rental expense in 1995, 1994, and 1993 was approximately $793,000, $132,000,
and $85,000, respectively.
 
EMPLOYMENT AGREEMENTS
 
    The Company has  entered into employment  agreements with several  officers.
The terms of these agreements include annual salary commitments of approximately
$795,000.  The agreements are effective through  1998. In addition, the officers
were granted options to purchase shares of the Company's common stock (see  Note
9).
 
OTHER
 
    The Company has entered into certain Net Profits Agreements (the Agreements)
in  conjunction with the  September 1991 Pittsburg  County landfill acquisition.
The Agreements require the Company to pay a total of 15% of the net profits,  as
defined  in the Agreements, from the  related acquired landfill operation to two
individuals who  are  not currently  stockholders  of ADS.  These  payments  are
required  for the life of  the acquired landfill. Through  December 31, 1995, no
amounts related to the Agreements were payable.
 
REDEEMABLE PREFERRED STOCK OF SUBSIDIARY
 
    On March 28, 1995, ADS, a subsidiary of the Company, issued 1,950 shares  of
its  Series A Preferred Stock  and 46,549 warrants to  purchase shares of common
stock of the Company,  for $1,950,000. The holder  of the warrants can  purchase
one  common share for each warrant held at the exercise price of $0.10 per share
on or  before December  31, 2002.  The holder  of Series  A Preferred  Stock  is
entitled  to receive, out of funds  legally available, cumulative cash dividends
at a rate of $130 per share per annum, payable in equal quarterly  installments.
ADS  may redeem all or part of the  Series A Preferred Stock then outstanding by
paying to the holders of the shares  being redeemed a redemption price equal  to
the  sum of the amount of accrued  and unpaid cumulative dividends on the shares
being redeemed,  plus  $1,000  per share  redeemed  on  the first  day  of  each
February, May, August, and November in each year, commencing on May 1, 1995.
 
    In  connection with the Exchange, 5,000,000 shares of new preferred stock of
the Company were authorized with none issued at December 31, 1995.
 
                                      F-16
<PAGE>
                        AMERICAN DISPOSAL SERVICES, INC.
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                        DECEMBER 31, 1995, 1994 AND 1993
 
9.  STOCKHOLDERS' EQUITY
 
STOCK OPTIONS
 
    The Company's Board  of Directors  adopted the  American Disposal  Services,
Inc.  1996 Stock Option Plan effective January  1, 1996. The plan permits grants
of options up to an aggregate 1,100,000 shares of common stock to employees  and
certain  consultants of the Company, on such terms as the Company's compensation
committee (or  a  stock  option subcommittee  thereof)  determines.  Options  to
purchase  an aggregate 806,014 shares were granted  under the plan as of January
1, 1996 to replace existing stock options granted by ADS and County.
 
    An aggregate of 123,638 options have  an exercise price of $7.17 per  share,
and vest in 20% increments on each anniversary of the date of the original grant
of  the ADS stock options that they replace. An aggregate of 10,464 options have
an exercise price of  $7.17 per share,  and vest in 33  1/3% increments on  each
anniversary of the date of the original grant of the ADS stock options that they
replace.  An aggregate of  671,912 options have  an exercise price  of $7.41 per
share, and  vest in  part over  a three-year  period and  in part  based on  the
Company's  financial performance through fiscal 1998.  All vesting is subject to
acceleration under specified circumstances. All the foregoing stock options were
originally granted at their  fair value at  the date of  grant. The new  options
granted  under  the 1996  Option  Plan expire  ten years  from  the date  of the
original grant of the ADS and County stock options they replace.
 
    No options were exercised during the three years ended December 31, 1995.
 
    Options to purchase an aggregate 63,601 shares were granted outside the plan
to a former employee  as of January  1, 1996 and are  fully vested. Such  shares
have  an exercise price of $7.17 per share, increasing at 25% per annum from the
date of original grant of the ADS stock options they replace.
 
STOCK WARRANTS
 
    In connection with obtaining a credit agreement in 1993, the Company  issued
warrants  to ING  to purchase  71,330 shares  of common  stock. In  1993, 44,606
warrants were  issued with  an exercise  price  of $4.72  per share  and  26,137
warrants  were issued with an  exercise price of $7.17  per share. An additional
587 shares were  issued in  1995 under  terms of  the credit  agreement with  an
exercise  price of $4.72 per share. The common stock was valued by management at
$7.17 on the date of issuance of the warrants. Given the difference between  the
exercise  price and  the value  of the  common stock,  the Company  recorded the
warrants as a component of equity and recognized debt issuance cost of $106,666.
The warrants expire ten years from date of issuance.
 
10. SUBSEQUENT EVENT
    On May 30, 1996, the stockholders of the Company approved a 13.5 to 1  stock
split. The accompanying financial statements are presented as if the stock split
had taken place on December 31, 1992.
 
                                      F-17
<PAGE>
                        AMERICAN DISPOSAL SERVICES, INC.
                      CONDENSED CONSOLIDATED BALANCE SHEET
                             (DOLLARS IN THOUSANDS)
 
                                     ASSETS
 
<TABLE>
<CAPTION>
                                                                                                        MARCH 31,
                                                                                                          1996
                                                                                                       -----------
                                                                                                       (UNAUDITED)
<S>                                                                                                    <C>
Current assets:
  Cash and cash equivalents (includes restricted cash of $156).......................................   $   6,706
  Trade receivables, net.............................................................................       6,563
  Other current assets...............................................................................         670
                                                                                                       -----------
Total current assets.................................................................................      13,939
Property, plant, and equipment, net..................................................................      81,696
Other assets:
  Cost over fair value of assets acquired, net.......................................................      15,636
  Other intangibles assets, net......................................................................       1,921
  Other assets.......................................................................................       2,240
                                                                                                       -----------
                                                                                                        $ 115,432
                                                                                                       -----------
                                                                                                       -----------
 
                                       LIABILITIES AND STOCKHOLDERS' EQUITY
 
Current liabilities:
  Note payable due to stockholder....................................................................   $  12,500
  Accounts payable...................................................................................       2,821
  Accrued liabilities and deferred revenues..........................................................       4,009
  Current portion of long-term debt and capital lease obligations....................................       4,167
                                                                                                       -----------
Total current liabilities............................................................................      23,497
Long-term debt and capital lease obligations, net of current portion.................................      49,006
Accrued environmental and landfill costs.............................................................       6,623
Deferred income taxes................................................................................       1,080
Redeemable preferred stock of subsidiary.............................................................       1,908
Total stockholders' equity...........................................................................      33,318
                                                                                                       -----------
                                                                                                        $ 115,432
                                                                                                       -----------
                                                                                                       -----------
</TABLE>
 
                            See accompanying notes.
 
                                      F-18
<PAGE>
                        AMERICAN DISPOSAL SERVICES, INC.
                CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
                 (DOLLARS IN THOUSANDS, EXCEPT PER SHARE DATA)
 
<TABLE>
<CAPTION>
                                                                                         THREE MONTHS ENDED MARCH
                                                                                                   31,
                                                                                         ------------------------
                                                                                            1996         1995
                                                                                         ----------  ------------
                                                                                               (UNAUDITED)
<S>                                                                                      <C>         <C>
Revenues...............................................................................  $   11,724  $      5,034
Cost of operations.....................................................................       6,108         3,047
Selling, general, and administrative expenses..........................................       1,935         1,080
Depreciation and amortization..........................................................       2,718           984
                                                                                         ----------  ------------
Operating income (loss)................................................................         963           (77)
Interest expense.......................................................................      (1,617)         (511)
Interest income........................................................................          78             4
                                                                                         ----------  ------------
Loss before income taxes...............................................................        (576)         (584)
Income tax benefit.....................................................................         160           156
                                                                                         ----------  ------------
Net loss...............................................................................        (416)         (428)
Preferred stock dividend requirement of subsidiary.....................................         (63)           --
                                                                                         ----------  ------------
Net loss applicable to common stockholders.............................................  $     (479) $       (428)
                                                                                         ----------  ------------
                                                                                         ----------  ------------
Loss per share of common stock.........................................................  $     (.08) $       (.15)
                                                                                         ----------  ------------
                                                                                         ----------  ------------
Weighted average common stock and common stock equivalent shares outstanding...........   6,065,445     2,770,889
                                                                                         ----------  ------------
                                                                                         ----------  ------------
</TABLE>
 
                            See accompanying notes.
 
                                      F-19
<PAGE>
                        AMERICAN DISPOSAL SERVICES, INC.
                CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
                             (DOLLARS IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                                                THREE MONTHS ENDED
                                                                                                    MARCH 31,
                                                                                               --------------------
                                                                                                 1996       1995
                                                                                               ---------  ---------
                                                                                                   (UNAUDITED)
<S>                                                                                            <C>        <C>
OPERATING ACTIVITIES
Net loss.....................................................................................  $    (416) $    (428)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
  Depreciation and amortization..............................................................      2,718        984
  Provision for environmental and landfill costs.............................................        118         12
  Deferred income taxes......................................................................       (160)      (156)
  Changes in working capital:................................................................
    Trade receivables........................................................................       (232)       109
    Accounts payable.........................................................................       (364)        (5)
    Accrued liabilities and deferred revenue.................................................        447       (317)
    Other working capital....................................................................        (93)      (268)
                                                                                               ---------  ---------
Net cash provided by (used in) operating activities..........................................      2,018        (69)
INVESTING ACTIVITIES
Capital expenditures.........................................................................     (2,674)      (991)
                                                                                               ---------  ---------
Net cash used in investing activities........................................................     (2,674)      (991)
FINANCING ACTIVITIES
Net proceeds from issuance of preferred stock of subsidiary..................................         --      1,908
Preferred stock dividend requirement of subsidiary...........................................        (63)        --
Net borrowings (repayments)..................................................................        944     (1,170)
Cash paid for stock issuance costs...........................................................        (58)        --
                                                                                               ---------  ---------
Net cash provided by financing activities....................................................        823        738
                                                                                               ---------  ---------
Net increase (decrease) in cash and cash equivalents (including restricted cash).............        167       (322)
Cash and cash equivalents (including restricted cash) at beginning of period.................      6,539        739
                                                                                               ---------  ---------
Cash and cash equivalents (including restricted cash) at end of period.......................  $   6,706  $     417
                                                                                               ---------  ---------
                                                                                               ---------  ---------
</TABLE>
 
                            See accompanying notes.
 
                                      F-20
<PAGE>
                        AMERICAN DISPOSAL SERVICES, INC.
              NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
                            MARCH 31, 1996 AND 1995
                                  (UNAUDITED)
 
1.  FORMATION AND BASIS OF PRESENTATION
    The  accompanying unaudited condensed consolidated financial statements have
been prepared in  accordance with generally  accepted accounting principles  for
interim financial information and with the instructions to Form 10-Q and Article
10  of Regulation S-X. 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 accruals) considered necessary for a fair presentation  have
been  included. Operating  results for  the three-month  period ended  March 31,
1996, are not necessarily indicative of the results that may be expected for the
fiscal year ending  December 31,  1996. For  further information,  refer to  the
consolidated financial statements and footnotes included elsewhere herein.
 
    Effective  January 1,  1996, the  stockholders of  ADS and  County exchanged
their shares  for shares  of a  newly created  holding company  by the  name  of
American  Disposal  Services,  Inc.  (the  Company).  This  share  exchange (the
Exchange) qualifies  as  a  transfer  of companies  under  common  control  and,
accordingly,  the transaction  has been  accounted for  at historical  cost in a
manner similar to pooling of interest accounting. The financial statements  have
been prepared as if the Exchange occurred on December 31, 1994.
 
2.  RELATED PARTY INTEREST EXPENSE
 
<TABLE>
<CAPTION>
                                                                              THREE MONTHS ENDED
                                                                                  MARCH 31,
                                                                             --------------------
                                                                               1996       1995
                                                                             ---------  ---------
                                                                                (IN THOUSANDS)
<S>                                                                          <C>        <C>
Charterhouse Equity Partners II, L.P.......................................  $     359  $      --
                                                                             ---------  ---------
                                                                             ---------  ---------
</TABLE>
 
3.  ENVIRONMENTAL MATTERS
    See  Note 8 of Notes to Consolidated Financial Statements included elsewhere
herein for a description of environmental matters.
 
4.  SUBSEQUENT EVENT
    In  May  1996,  the   Company  negotiated  a   new  credit  agreement   with
Internationale  Nederlanden (U.S.) Capital  Corporation (ING), as administrative
agent, and Morgan Guaranty  Trust Company of New  York, as documentation  agent,
that  provides for borrowings of  up to $87 million  to finance acquisitions and
provide working capital, which was used to repay the existing credit  agreements
with  Bank of America  and ING, as well  as the note  payable to stockholder and
redeemable preferred stock of subsidiary. The facility consists of a $38 million
term loan A, $25 million term loan B, $7 million revolving loan, and $17 million
acquisition facility. The rate of interest is  equal to either a base rate  plus
an  applicable  margin or  the  London Interbank  Offered  Rate (LIBOR)  plus an
applicable margin. The base rate  is the higher of  the Federal Funds Rate  plus
0.5% or the prime rate. Term loan A bears an interest rate of the base rate plus
1.25%  or LIBOR  plus 2.75%  and is due  in quarterly  installments beginning in
December 1996 through June 2001. Term loan B bears an interest rate of the  base
rate  plus  1.75% or  LIBOR  plus 3.25%  and  is due  in  quarterly installments
beginning in  December 1996  through  June 2003.  The  revolving loan  bears  an
interest  rate of the  base rate plus 1.00%  or LIBOR plus  2.50% and matures on
June 30, 2001. The acquisition facility bears an interest rate of the base  rate
plus 1.50% or LIBOR plus 3.00% and is due in quarterly installments beginning in
September  1998 through March 2000. The  revolving loan and acquisition facility
provide for  commitment fees  of 1/2%  per  annum on  the unused  portions.  The
facility  is secured by  substantially all of  the assets of  the Company. Under
terms of the credit agreement, the Company is subject to various debt covenants,
including maintenance of  certain financial ratios  and other restrictions.  The
Credit  Facility requires the Company  to use 50% of  the proceeds of any equity
offering to repay a portion of the term loans.
 
                                      F-21
<PAGE>
                        AMERICAN DISPOSAL SERVICES, INC.
                 PRO FORMA CONSOLIDATED STATEMENT OF OPERATIONS
                      FOR THE YEAR ENDED DECEMBER 31, 1995
                 (DOLLARS IN THOUSANDS, EXCEPT PER SHARE DATA)
                                  (UNAUDITED)
 
<TABLE>
<CAPTION>
                                                                ACQUISITIONS
                                                        -----------------------------
                                           HISTORICAL   HISTORICAL (1) ADJUSTMENTS (2) REFINANCING (3)   PRO FORMA
                                           -----------  ------------  ---------------  ---------------  ------------
<S>                                        <C>          <C>           <C>              <C>              <C>
Revenues.................................   $  30,004    $   14,496      $  --            $  --         $     44,500
Cost of operations.......................      17,286         5,044                                           22,330
Selling, general and administrative
 expenses................................       5,882         2,146          1,465                             9,493
Depreciation and amortization............       6,308         5,861            784               87           13,040
                                           -----------  ------------       -------            -----     ------------
Operating income (loss)..................         528         1,445         (2,249)             (87)            (363)
Interest Expense.........................      (3,030)                      (2,241)             (43)          (5,314)
Interest Income..........................         189                                        --                  189
                                           -----------  ------------       -------            -----     ------------
Loss before income taxes and
 extraordinary item......................      (2,313)        1,445         (4,490)            (130)          (5,488)
Income tax benefit (expense).............        (332)                                                          (332)
                                           -----------  ------------       -------            -----     ------------
Net loss.................................   $  (2,645)   $    1,445      $  (4,490)       $    (130)    $     (5,820)
                                           -----------  ------------       -------            -----     ------------
                                           -----------  ------------       -------            -----     ------------
Net loss per share of common stock.......                                                               $       (.96)
                                                                                                        ------------
                                                                                                        ------------
Weighted average common stock and common
 stock equivalent shares outstanding.....                                                                  6,065,445
                                                                                                        ------------
                                                                                                        ------------
EBITDA (4)...............................                                                               $     12,677
                                                                                                        ------------
                                                                                                        ------------
</TABLE>
 
- ------------------------
 
(1)  Reflects the combined historical statement of revenues and direct operating
    expenses for the Municipal Services Group (MSG) of Envirite Corporation  for
    the period of January 1, 1995 through the dates of acquisitions as follows:
 
       -  Clarion County, Pennsylvania -- June 8, 1995
       -  Wyandot County, Ohio -- August 1, 1995
       -  Livingston County, Illinois -- November 16, 1995
 
(2)  Adjustments to reflect the historical amounts for the acquisitions noted in
    footnote (1) as follows (in thousands):
 
<TABLE>
<S>                                                                   <C>
Incremental amortization of landfill costs recorded in purchase
 accounting.........................................................  $     752
Incremental goodwill amortization of assets acquired in excess of
 fair value.........................................................         32
Incremental interest expense on additional debt.....................      2,241
Incremental selling, general and administrative expenses, including
 management salaries and benefits, professional fees and other
 expenses...........................................................      1,465
                                                                      ---------
                                                                      $   4,490
                                                                      ---------
                                                                      ---------
</TABLE>
 
                                      F-22
<PAGE>
                        AMERICAN DISPOSAL SERVICES, INC.
           PRO FORMA CONSOLIDATED STATEMENT OF OPERATIONS (CONTINUED)
                      FOR THE YEAR ENDED DECEMBER 31, 1995
                 (DOLLARS IN THOUSANDS, EXCEPT PER SHARE DATA)
                                  (UNAUDITED)
 
(3) Adjustments to reflect the new credit facility, which replaces: (i) the Bank
    of America term  loan and revolver;  (ii) the ING  Capital Corporation  term
    loans and revolver; (iii) $7.5 million of the note payable to a stockholder;
    and  (iv)  the redeemable  perferred stock  of a  subsidiary as  follows (in
    thousands):
 
<TABLE>
<S>                                                                  <C>
Interest Expense
  Term loan A at $38 million bearing an interest rate of 8.79%.....  $   3,340
  Term loan B at $21 million bearing an interest rate of 9.29%.....      1,974
  Less historical and adjusted interest expense....................     (5,271)
                                                                     ---------
  Net adjustment...................................................  $      43
                                                                     ---------
                                                                     ---------
Debt Issuance Costs
  Amortization for new credit facility.............................  $     345
  Less historical amortization.....................................       (258)
                                                                     ---------
  Net adjustment...................................................  $      87
                                                                     ---------
                                                                     ---------
</TABLE>
 
    An average LIBOR  rate of 6.04%  was used  for the year  ended December  31,
1995.  The  debt  issuance costs  were  allocated  on a  pro-rata  basis  to the
respective components of the new credit facility.
 
(4) EBITDA represents operating income plus depreciation and amortization. While
    EBITDA data should not  be construed as a  substitute for operating  income,
    net  income (loss) or cash flows  from operations in analyzing the Company's
    operating performance, financial  position and cash  flows, the Company  has
    included EBITDA data (which are not a measure of financial performance under
    generally  accepted accounting principles) because  it understands that such
    data are  commonly  used  by  certain  investors  to  evaluate  a  company's
    performance in the solid waste industry.
 
                                      F-23
<PAGE>
                         REPORT OF INDEPENDENT AUDITORS
 
The Board of Directors
Envirite Corporation
 
    We  have audited the  accompanying statements of net  assets acquired of the
MSG Facilities of Envirite  Corporation as of December  31, 1994 and January  1,
1994,  and the related  statements of revenue and  direct operating expenses for
the years  then ended.  These  financial statements  are the  responsibility  of
Envirite  Corporation'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  statements of net  assets acquired  and
revenue  and direct  operating expenses  are free  of material  misstatement. An
audit includes examining, on a test  basis, evidence supporting the amounts  and
disclosures  in the statements. An audit  also includes assessing the accounting
principles used  and  significant  estimates  made by  management,  as  well  as
evaluating  the  overall presentation  of the  statements.  We believe  that our
audits provide a reasonable basis for our opinion.
 
    As described in Note 1, the accompanying financial statements were  prepared
for  the purpose of complying with Rule 3-05 of Regulation S-X of the Securities
and Exchange Commission, as agreed to by representatives of the Commission,  and
are  not intended to  be a complete  presentation of assets  and liabilities and
results of operations on a stand-alone basis of the MSG Facilities.
 
    In our opinion, the financial  statements referred to above present  fairly,
in  all material  respects, the  net assets  acquired of  the MSG  Facilities of
Envirite Corporation at December 31, 1994  and January 1, 1994, and the  revenue
and  direct operating expenses for the years then ended, as described in Note 1,
in conformity with generally accepted accounting principles.
 
                                          ERNST & YOUNG LLP
 
Philadelphia, Pennsylvania
November 8, 1995
 
                                      F-24
<PAGE>
                              ENVIRITE CORPORATION
                                 MSG FACILITIES
                       STATEMENTS OF NET ASSETS ACQUIRED
 
                                     ASSETS
 
<TABLE>
<CAPTION>
                                                                                     DECEMBER 31,    JANUARY 1,
                                                                                         1994           1994
                                                                                     -------------  -------------
<S>                                                                                  <C>            <C>
Accounts receivable................................................................  $   3,329,720  $   1,883,946
Wyandot trust fund.................................................................      1,029,770        664,521
 
Property, plant and equipment, at cost:
  Land, primarily disposal sites...................................................     28,682,963     26,911,426
  Buildings........................................................................        850,276        838,985
  Machinery and equipment..........................................................      6,075,446      5,387,264
                                                                                     -------------  -------------
                                                                                        35,608,685     33,137,675
  Less accumulated depreciation....................................................     (7,073,154)    (5,054,868)
                                                                                     -------------  -------------
Net property, plant and equipment..................................................     28,535,531     28,082,807
                                                                                     -------------  -------------
    Total assets...................................................................  $  32,895,021  $  30,631,274
                                                                                     -------------  -------------
 
                                       LIABILITIES AND NET ASSETS ACQUIRED
Closure and post-closure liabilities...............................................  $   3,790,695  $   2,223,407
Financing agreements...............................................................      1,189,196             --
Capital leases payable.............................................................        270,808        294,793
                                                                                     -------------  -------------
    Total liabilities..............................................................      5,250,699      2,518,200
                                                                                     -------------  -------------
Net assets acquired................................................................  $  27,644,322  $  28,113,074
                                                                                     -------------  -------------
                                                                                     -------------  -------------
</TABLE>
 
                            See accompanying notes.
 
                                      F-25
<PAGE>
                              ENVIRITE CORPORATION
                                 MSG FACILITIES
 
              STATEMENTS OF REVENUE AND DIRECT OPERATING EXPENSES
 
<TABLE>
<CAPTION>
                                                                                         FISCAL YEARS ENDED,
                                                                                     ----------------------------
                                                                                     DECEMBER 31,    JANUARY 1,
                                                                                         1994           1994
                                                                                     -------------  -------------
<S>                                                                                  <C>            <C>
Sales..............................................................................  $  18,820,589  $  14,873,841
Direct operating costs and expenses:
  Cost of sales....................................................................     13,279,680     10,475,968
  Selling and administrative.......................................................      4,452,969      3,445,685
                                                                                     -------------  -------------
Operating profit...................................................................  $   1,087,940  $     952,188
                                                                                     -------------  -------------
                                                                                     -------------  -------------
</TABLE>
 
                            See accompanying notes.
 
                                      F-26
<PAGE>
                              ENVIRITE CORPORATION
                                 MSG FACILITIES
                         NOTES TO FINANCIAL STATEMENTS
        FOR THE FISCAL YEARS ENDED DECEMBER 31, 1994 AND JANUARY 1, 1994
 
1.  SIGNIFICANT ACCOUNTING POLICIES
 
BASIS OF PRESENTATION
 
    On April 28, 1995, Envirite Corporation (Envirite) and County Disposal, Inc.
(County) entered into an Asset Purchase Agreement (the Agreement) whereby County
agreed  to  purchase  from  Envirite  certain  landfill  facilities  and   waste
transportation  and collection equipment located  in Livingston County, Illinois
(Livingston Facility) and Wyandot  County, Ohio (Wyandot  Facility), all of  the
issued  and outstanding capital stock of  County Environmental Services, Inc., a
wholly-owned subsidiary of Envirite, which owns and operates a landfill facility
and waste transportation  and collection  equipment located  in Clarion  County,
Pennsylvania  (Clarion Facility) (collectively, the MSG Facilities), and certain
related assets, and assume certain liabilities.
 
    The accompanying Statements of  Net Assets Acquired  present as of  December
31,  1994 and  January 1, 1994,  the MSG  Facilities' assets to  be acquired and
certain liabilities assumed (including those represented by the capital stock of
County Environmental Services, Inc.) by County pursuant to the Agreement.  Cash,
income  tax benefits and liabilities, and  certain other assets and liabilities,
related to the MSG Facilities will be retained by Envirite and are not  included
herein. Pursuant to the Agreement, County assumes certain other liabilities that
are  not required by generally accepted  accounting principles to be recorded in
these financial  statements.  The Statements  of  Revenue and  Direct  Operating
Expenses   represent  those   revenues  and   expenses  that   are  specifically
identifiable to  the  MSG  Facilities  and  do  not  include  certain  corporate
expenses.  As a  result, the  accompanying Statements are  not intended  to be a
complete presentation of the MSG Facilities' assets and liabilities and  results
of operations had they been operated as a stand-alone entity.
 
ACCOUNTS RECEIVABLE
 
    Pursuant to the Agreement, accounts receivable represent amounts not greater
than 60 days old. All other receivables are retained by Envirite.
 
WYANDOT TRUST FUND
 
    These  amounts are held in trust to  meet legal requirements for closure and
post-closure obligations for the Wyandot Facility.
 
PROPERTY, PLANT, AND EQUIPMENT
 
    Costs associated with the acquisition and development of disposal sites  are
recorded  as  land and  amortized as  landfill capacity  is consumed.  Plant and
equipment is depreciated under the straight-line method. Estimated useful  lives
are  15 to 35 years for buildings and  3 to 8 years for machinery and equipment.
Depreciation and landfill amortization expense was $2,183,000 and $2,110,000  in
1994 and 1993, respectively.
 
    As  of January 2,  1994, the Company  changed the estimated  useful lives of
certain transportation  assets from  five to  eight years.  The effect  of  this
change in useful lives was to increase the operating profit by $136,000 in 1994.
 
FISCAL YEAR
 
    The  Company utilizes a 52 - 53 week fiscal year. There were 53 weeks in the
1993 fiscal year and 52 weeks in the 1994 fiscal year.
 
CLOSURE AND POST-CLOSURE COSTS
 
    The estimated costs associated with meeting regulatory requirements for  the
closure  and  post-closure monitoring  of landfills  are  charged to  expense as
landfill capacity is consumed. Post-closure monitoring is
 
                                      F-27
<PAGE>
                              ENVIRITE CORPORATION
                                 MSG FACILITIES
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
        FOR THE FISCAL YEARS ENDED DECEMBER 31, 1994 AND JANUARY 1, 1994
 
1.  SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
generally required for thirty years from the time the landfill is closed.  These
costs  and  landfill  capacities  are based  on  engineering  estimates  and are
reviewed annually. Landfill  closure and  post-closure costs  of $1,709,000  and
$1,228,000 were expensed in 1994 and 1993, respectively.
 
    In  accordance  with  regulatory requirements,  Envirite  provides financial
assurance for  closure  and  post-closure  monitoring.  These  requirements  are
satisfied  either  by  providing a  letter  of  credit or  funding  a  trust. In
accordance with these requirements, Envirite had $3,239,000 of letters of credit
outstanding at December 31,  1994 for these purposes  and $1,029,770 is held  in
trust.
 
SELLING AND ADMINISTRATIVE EXPENSE
 
    Included  in direct  selling and administrative  expense for  the year ended
December 31, 1994 is approximately $700,000  of one-time charges related to  the
disposition of the landfills.
 
2.  RENT EXPENSE
    Rent  expense for leased office space and certain equipment was $386,000 and
$259,000 in 1994 and 1993, respectively.
 
    Future annual rentals for these operating leases will be as follows:
 
<TABLE>
<S>                                                               <C>
1995............................................................  $ 597,170
1996............................................................    597,170
1997............................................................    484,016
1998............................................................    391,948
1999............................................................    166,332
                                                                  ---------
                                                                  $2,236,636
                                                                  ---------
                                                                  ---------
</TABLE>
 
3.  CAPITAL LEASES
    Property, plant, and equipment includes leased property under capital leases
as follows:
 
<TABLE>
<CAPTION>
                                                                     DECEMBER 31,  JANUARY 1,
                                                                         1994         1994
                                                                     ------------  ----------
<S>                                                                  <C>           <C>
Machinery and equipment............................................   $  552,191   $  456,000
Less accumulated depreciation......................................      213,966      122,766
                                                                     ------------  ----------
                                                                      $  338,225   $  333,234
                                                                     ------------  ----------
                                                                     ------------  ----------
</TABLE>
 
    Future minimum lease payments under  these capital leases together with  the
present  value of  the minimum  lease payments  as of  December 31,  1994 are as
follows:
 
<TABLE>
<S>                                                                 <C>
1995..............................................................  $ 138,649
1996..............................................................     88,124
1997..............................................................     44,221
1998..............................................................     23,261
1999..............................................................     13,572
                                                                    ---------
    Total minimum lease payments..................................    307,827
Less amount representing interest.................................    (37,019)
                                                                    ---------
Present value of minimum lease payments...........................  $ 270,808
                                                                    ---------
                                                                    ---------
</TABLE>
 
                                      F-28
<PAGE>
                              ENVIRITE CORPORATION
                                 MSG FACILITIES
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
        FOR THE FISCAL YEARS ENDED DECEMBER 31, 1994 AND JANUARY 1, 1994
 
4.  FINANCING AGREEMENTS
    Financing agreements  are  secured by  certain  equipment used  at  the  MSG
Facilities  and are at  interest rates ranging  from 7.6% to  10.7% with monthly
principal payments through July  1999. The amount of  the liability is based  on
the  purchased assets  collateralizing the debt.  County Environmental Services,
Inc. is a guarantor of  one financing agreement, a  portion of which relates  to
the  purchased  assets. The  amount of  the guarantee  not related  to purchased
assets is $430,000 as of November 8, 1995.
 
5.  ASSETS PLEDGED AS COLLATERAL
    At December 31, 1994, Envirite had  a loan and security agreement  providing
for  a revolving credit  facility for $28,300,000  including cash borrowings and
letters of  credit  (the "Revolving  Credit  Facility"). Collateral  includes  a
security  interest in accounts receivable and  certain real property included in
the accompanying financial statements and the stock of a subsidiary of Envirite.
 
6.  SUBSEQUENT EVENT
    As of November 8, 1995, the Wyandot and Clarion Facilities have been sold to
County in accordance with the Agreement. Cash borrowings and irrevocable letters
of credit under Envirite's  Revolving Credit Facility at  that date were $0  and
$4,656,424, respectively.
 
                                      F-29
<PAGE>
                         REPORT OF INDEPENDENT AUDITORS
 
The Board of Directors
Envirite Corporation
 
    We  have audited the accompanying statement  of revenue and direct operating
expenses of the MSG Facilities of Envirite Corporation for the period January 1,
1995 to November  15, 1995. This  financial statement is  the responsibility  of
Envirite  Corporation's management. Our responsibility  is to express an opinion
on this financial statement 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 statement of revenue and direct operating
expenses is free  of material misstatement.  An audit includes  examining, on  a
test basis, evidence supporting the amounts and disclosures in the statement. An
audit  also includes  assessing the  accounting principles  used and significant
estimates made by management, as well as evaluating the overall presentation  of
the  statement. We believe  that our audit  provides a reasonable  basis for our
opinion.
 
    As described in Note  1, the accompanying  financial statement was  prepared
for  the purpose of complying with Rule 3-05 of Regulation S-X of the Securities
and Exchange Commission, as agreed to by representatives of the Commission,  and
is  not intended  to be a  complete presentation  of results of  operations on a
stand-alone basis of the MSG Facilities.
 
    In our opinion, the financial  statement referred to above presents  fairly,
in  all material respects, the revenue and  direct operating expenses of the MSG
Facilities of Envirite Corporation  for the period January  1, 1995 to  November
15,  1995,  as  described  in  Note 1,  in  conformity  with  generally accepted
accounting principles.
 
                                          ERNST & YOUNG LLP
 
Philadelphia, Pennsylvania
February 9, 1996
 
                                      F-30
<PAGE>
                              ENVIRITE CORPORATION
                                 MSG FACILITIES
 
               STATEMENT OF REVENUE AND DIRECT OPERATING EXPENSES
 
              FOR THE PERIOD JANUARY 1, 1995 TO NOVEMBER 15, 1995
 
<TABLE>
<S>                                                                           <C>
Sales.......................................................................   $ 14,495,965
Direct operating costs and expenses:
  Cost of sales.............................................................     10,904,948
  Selling and administrative................................................      2,145,510
                                                                              --------------
Operating profit............................................................   $  1,445,507
                                                                              --------------
                                                                              --------------
</TABLE>
 
                            See accompanying notes.
 
                                      F-31
<PAGE>
                              ENVIRITE CORPORATION
                                 MSG FACILITIES
                         NOTES TO FINANCIAL STATEMENTS
              FOR THE PERIOD JANUARY 1, 1995 TO NOVEMBER 15, 1995
 
1.  SIGNIFICANT ACCOUNTING POLICIES
 
BASIS OF PRESENTATION
 
    On April 28, 1995, Envirite Corporation (Envirite) and County Disposal, Inc.
(County) entered into an Asset Purchase Agreement (the Agreement) whereby County
agreed  to  purchase  from  Envirite  certain  landfill  facilities  and   waste
transportation  and collection equipment located  in Livingston County, Illinois
(Livingston Facility) and Wyandot  County, Ohio (Wyandot  Facility), all of  the
issued  and outstanding capital stock of  County Environmental Services, Inc., a
wholly-owned subsidiary of Envirite, which owns and operates a landfill facility
and waste transportation  and collection  equipment located  in Clarion  County,
Pennsylvania  (Clarion Facility) (collectively, the MSG Facilities), and certain
related assets, and to assume certain liabilities.
 
    The Statement  of Revenue  and Direct  Operating Expenses  represents  those
revenues  and expenses from  January 1, 1995 to  the dates of  sale of the three
facilities (June 8, 1995 for Clarion;  August 1, 1995 for Wyandot; November  16,
1995  for Livingston) that  are specifically identifiable  to the MSG Facilities
and do not  include certain corporate  expenses. As a  result, the  accompanying
Statement is not intended to be a complete representation of the MSG Facilities'
results of operations had they been operated as a stand-alone entity.
 
CLOSURE AND POST-CLOSURE COSTS
 
    The  estimated costs associated with meeting regulatory requirements for the
closure and  post-closure monitoring  of  landfills are  charged to  expense  as
landfill capacity is consumed. Post-closure monitoring is generally required for
thirty  years from  the time  the landfill is  closed. These  costs and landfill
capacities are  based  on  engineering  estimates  and  are  reviewed  annually.
Landfill  closure  and post-closure  costs of  $1,472,000  were expensed  in the
period January 1, 1995 to November 15, 1995.
 
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 statement  and
accompanying notes. Actual results could differ from those estimates.
 
2.  RENT EXPENSE
    Rent  expense for leased office space and certain equipment was $482,000 for
the period January 1, 1995 to November 15, 1995.
 
                                      F-32
<PAGE>
- ------------------------------------------------
                                ------------------------------------------------
- ------------------------------------------------
                                ------------------------------------------------
 
    NO  DEALER,  SALESPERSON  OR ANY  OTHER  PERSON  IS AUTHORIZED  TO  GIVE ANY
INFORMATION OR TO MAKE ANY REPRESENTATION IN CONNECTION WITH THIS OFFERING OTHER
THAN THOSE CONTAINED IN THIS PROSPECTUS, AND, IF GIVEN OR MADE, SUCH INFORMATION
OR REPRESENTATIONS MUST  NOT BE  RELIED UPON AS  HAVING BEEN  AUTHORIZED BY  THE
COMPANY OR ANY UNDERWRITER. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER TO SELL
OR A SOLICITATION OF AN OFFER TO BUY BY ANYONE IN ANY JURISDICTION IN WHICH SUCH
OFFER  TO SELL OR SOLICITATION IS NOT  AUTHORIZED, OR IN WHICH THE PERSON MAKING
SUCH OFFER IS NOT QUALIFIED TO DO SO OR TO ANY PERSON TO WHOM IT IS UNLAWFUL  TO
MAKE SUCH OFFER OR SOLICITATION. NEITHER THE DELIVERY OF THIS PROSPECTUS NOR ANY
SALE HEREUNDER SHALL, UNDER ANY CIRCUMSTANCES, CREATE ANY IMPLICATION THAT THERE
HAS  BEEN NO CHANGE IN THE AFFAIRS OF  THE COMPANY SINCE THE DATE HEREOF OR THAT
THE INFORMATION CONTAINED  HEREIN IS CORRECT  AS OF ANY  TIME SUBSEQUENT TO  ITS
DATE.
 
                              -------------------
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                          PAGE
                                                          -----
<S>                                                    <C>
Prospectus Summary...................................           3
Risk Factors.........................................           6
The Company..........................................          14
Use of Proceeds......................................          14
Dividend Policy......................................          14
Dilution.............................................          15
Capitalization.......................................          16
Selected Consolidated Financial Data.................          17
Management's Discussion and Analysis of Financial
  Condition and Results of Operations................          18
Business.............................................          25
Management...........................................          38
Certain Transactions.................................          42
Principal Stockholders...............................          43
Description of Capital Stock.........................          45
Shares Eligible for Future Sale......................          46
Underwriting.........................................          48
Legal Matters........................................          49
Experts..............................................          49
Additional Information...............................          49
Index to Financial Statements........................         F-1
</TABLE>
 
                              -------------------
 
    UNTIL               , 1996 (25 DAYS AFTER THE COMMENCEMENT OF THE OFFERING),
ALL DEALERS EFFECTING TRANSACTIONS IN THE REGISTERED SECURITIES, WHETHER OR  NOT
PARTICIPATING  IN THIS  DISTRIBUTION, MAY BE  REQUIRED TO  DELIVER A PROSPECTUS.
THIS DELIVERY REQUIREMENT IS IN ADDITION TO THE OBLIGATION OF DEALERS TO DELIVER
A PROSPECTUS  WHEN ACTING  AS  UNDERWRITERS AND  WITH  RESPECT TO  THEIR  UNSOLD
ALLOTMENTS OR SUBSCRIPTIONS.
 
                                2,750,000 SHARES
 
                                     [LOGO]
 
                        AMERICAN DISPOSAL SERVICES, INC.
 
                                  COMMON STOCK
 
                               -----------------
 
                              P R O S P E C T U S
 
                               -----------------
 
                            OPPENHEIMER & CO., INC.
 
                                CS FIRST BOSTON
 
                                           , 1996
 
- ------------------------------------------------
                                ------------------------------------------------
- ------------------------------------------------
                                ------------------------------------------------
<PAGE>
                                    PART II
                   INFORMATION NOT REQUIRED IN THE PROSPECTUS
 
ITEM 13.  OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION.
 
    The  following table shows the  expenses, other than underwriting discounts,
which the  Company  expects  to  incur  in  connection  with  the  issuance  and
distribution   of  the  securities  being  registered  under  this  registration
statement. All expenses  are estimated  except for the  Securities and  Exchange
Commission registration fee and the NASD filing fee.
 
<TABLE>
<S>                                                                  <C>
Securities and Exchange Commission registration fee................  $  15,268
Nasdaq entry fee...................................................      *
NASD filing fee....................................................      4,928
Blue Sky fees and expenses.........................................      *
Legal fees and expenses............................................      *
Accounting fees and expenses.......................................      *
Printing and engraving expenses....................................      *
Registrar and transfer agent's fee.................................      *
Miscellaneous......................................................      *
                                                                     ---------
    Total..........................................................  $   *
                                                                     ---------
                                                                     ---------
</TABLE>
 
- ------------------------
*   To be filed by amendment.
 
ITEM 14.  INDEMNIFICATION OF DIRECTORS AND OFFICERS.
 
    Section  145  of  the  General  Corporation Law  of  the  State  of Delaware
("Section 145") permits a Delaware corporation  to 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.
 
    In  the case of an action by or in the right of the corporation, Section 145
permits the corporation  to 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 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)
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. No indemnification may 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 was brought shall determine upon application
that, despite the adjudication of liability but in view of all the circumstances
of 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.
 
    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 the preceding two paragraphs, Section 145  requires
that he be indemnified against expenses (including attorneys' fees) actually and
reasonably incurred by him in connection therewith.
 
                                      II-1
<PAGE>
    Section  145 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.
 
    Article  Fifth of the Company's  Certificate of Incorporation eliminates the
personal liability  of  the directors  of  the Company  to  the Company  or  its
stockholders  for monetary  damages for breach  of fiduciary  duty as directors,
with certain exceptions, and Article Sixth requires indemnification of directors
and officers of the Company, and  for advancement of litigation expenses to  the
fullest  extent permitted by Section 145. Article Sixth of the Company's By-laws
provides for  indemnification of  the Company's  officers and  directors to  the
fullest  extent permitted by Section 145  and other applicable laws as currently
in effect and as they may be amended in the future.
 
    The Underwriting  Agreement  filed  herewith as  Exhibit  1.1  provides  for
indemnification  of the directors, certain  officers, and controlling persons of
the Company by  the Underwriters  against certain  civil liabilities,  including
liabilities  under  the  Securities  Act.  The  Company  has  also  entered into
agreements  with   its   directors   and  executive   officers   providing   for
indemnification in certain circumstances.
 
ITEM 15.  RECENT SALES OF UNREGISTERED SECURITIES.
 
    As part of the Exchange, the Company issued an aggregate of 5,676,901 shares
of  its Common  Stock, options  to purchase 869,615  shares of  Common Stock and
Warrants to purchase 215,454 shares of Common Stock (after giving effect to  the
Stock  Split)  to the  then stockholders,  option  holders and  warrant holders,
respectively, of ADS and CDI, effective  as of January 1, 1996. No  underwriters
were  engaged in connection  with the foregoing sales  of securities. Such sales
were made  in  reliance on  the  exemption set  forth  in Section  4(2)  of  the
Securities  Act of 1933, as amended ("Securities  Act"), relating to sales by an
issuer not involving a public offering.  All of the foregoing shares are  deemed
to be restricted securities for the purposes of the Securities Act.
 
ITEM 16.  EXHIBITS AND FINANCIAL STATEMENT SCHEDULES.
 
    (a) Exhibits
 
<TABLE>
<CAPTION>
EXHIBIT NO.                                        DESCRIPTION OF EXHIBITS
- -----------  ----------------------------------------------------------------------------------------------------
<C>          <S>
        .11  Form of Underwriting Agreement*
       3.1   Restated Certificate of Incorporation of the Company
       3.2   Amendment to Restated Certificate of Incorporation
       3.3   By-laws of the Company
       4.1   Specimen Common Stock Certificate*
       5.1   Opinion of Proskauer Rose Goetz & Mendelsohn LLP*
      10.1   Credit Agreement dated as of May 30, 1996 among the Company, Internationale Nederlanden (U.S.)
              Capital Corporation, as administrative agent, and Morgan Guaranty Trust Company of New York, as
              documentation agent, and the other financial institutions party thereto*
      10.2   Registration Rights Agreement dated as of January 1, 1996 among the Company and certain of its
              stockholders
      10.3   Employment Agreement dated as of June 1, 1996 between the Company and Richard De Young*
      10.4   Employment Agreement dated January 26, 1993 between the Company and John J. McDonnell, as amended
      10.5   Employment Agreement dated May 16, 1995 between the Company and Richard T. Kogler
</TABLE>
 
                                      II-2
<PAGE>
<TABLE>
<CAPTION>
EXHIBIT NO.                                        DESCRIPTION OF EXHIBITS
- -----------  ----------------------------------------------------------------------------------------------------
      10.6   Employment Agreement dated June 2, 1995 between the Company and Ann L. Straw
<C>          <S>
      10.7   Employment Agreement dated May 3, 1994 between the Company and Lawrence R. Conrath
      10.8   American Disposal Services, Inc. 1996 Stock Option Plan*
      10.9   Form of Indemnification Agreement between the Company and its directors
      10.10  Form of Indemnification Agreement between the Company and its executive officers
      10.11  Form of Tax-Sharing Agreement between the Company and its executive officers*
      21.1   Subsidiaries of the Company*
      23.1   Consent of Ernst & Young LLP
      23.2   Consent of Ernst & Young LLP
      23.3   Consent of Arthur Andersen LLP
      23.4   Consent of Proskauer Rose Goetz & Mendelsohn LLP (included in exhibit 5.1)*
      24.1   Powers of Attorney are set forth on the signature page hereof
</TABLE>
 
- ------------------------
(*) To be filed by Amendment.
 
    (b) Financial Statement Schedules
 
        None
 
ITEM 17.  UNDERTAKINGS.
 
    The Registrant hereby undertakes that:
 
        (1)  For purposes of determining any  liability under the Securities Act
    of 1933, the information omitted from  the form of prospectus filed as  part
    of this registration statement in reliance upon Rule 430A and contained in a
    form of prospectus filed by the Registrant pursuant to Rule 424(b)(1) or (4)
    under  the Securities Act  shall be deemed  to be part  of this registration
    statement as of the time it was declared effective.
 
        (2) For the purpose  of determining any  liability under the  Securities
    Act  of  1933,  each  post-effective  amendment  that  contains  a  form  of
    prospectus 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 Registrant  hereby undertakes  to  provide to  the Underwriters  at  the
closing  specified in the Underwriting Agreement (filed herewith as Exhibit 1.1)
certificates in such denominations and registered  in such names as required  by
the Underwriters to permit prompt delivery to each purchaser.
 
    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 provisions described  above in Item 14 or otherwise,
the Registrant  has been  advised that  in  the opinion  of the  Securities  and
Exchange  Commission such indemnification is  against public policy as expressed
in the Securities  Act of 1933  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  against  the Registrant  by  such director,
officer,  or  controlling  person  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 1933 and  will be governed by the
final adjudication of such issue.
 
                                      II-3
<PAGE>
                                   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 Burr  Ridge, State of
Illinois, on May 31, 1996.
 
                                          AMERICAN DISPOSAL SERVICES, INC.
 
                                          By:        /s/ RICHARD DE YOUNG
 
                                             -----------------------------------
                                                      Richard De Young
                                                          PRESIDENT
 
                               POWER OF ATTORNEY
 
    KNOW ALL PERSONS BY THESE PRESENTS, that the persons whose signatures appear
below each severally constitutes and appoints  Richard De Young, Scott H.  Flamm
and  Ann L. Straw,  and each of  them, as true  and lawful attorneys-in-fact and
agents, with full power  of substitution and resubstitution,  for them in  their
name, place and stead, in any and all capacities, to sign any and all amendments
(including  pre-effective  and post-effective  amendments) to  this Registration
Statement, and to file the same, with all exhibits thereto, and other  documents
in  connection therewith, with the  Securities and Exchange Commission, granting
unto said  attorneys-in-fact  and agents,  and  each  of them,  full  power  and
authority to do and perform each and every act and thing requisite and necessary
to  be done in and about  the premises, as fully to  all intents and purposes as
they might or could do in person, hereby ratifying and confirming all which said
attorneys-in-fact  and  agents,  or  any   of  them,  or  their  substitute   or
substitutes, may lawfully do, or cause to be done by virtue hereof.
 
    Pursuant   to  the  requirements  of  the   Securities  Act  of  1933,  this
registration  statement  has  been  signed  by  the  following  persons  in  the
capacities and on the dates indicated.
 
<TABLE>
<C>                                                     <S>                                       <C>
                      SIGNATURE                                          TITLE                         DATE
- ------------------------------------------------------  ----------------------------------------  ---------------
                 /s/ DAVID C. STOLLER                   Chairman and Director                      May 31, 1996
     -------------------------------------------         (principal executive officer)
                   David C. Stoller
 
                 /s/ RICHARD DE YOUNG                   President and Director                     May 31, 1996
     -------------------------------------------
                   Richard De Young
 
                  /s/ SCOTT H. FLAMM                    Senior Vice President, Chief Financial     May 31, 1996
     -------------------------------------------         Officer and Director (principal
                    Scott H. Flamm                       financial officer)
 
               /s/ LAWRENCE R. CONRATH                  Vice President and Controller (principal   May 31, 1996
     -------------------------------------------         accounting officer)
                 Lawrence R. Conrath
 
                /s/ MERRIL M. HALPERN                   Director                                   May 31, 1996
     -------------------------------------------
                  Merril M. Halpern
</TABLE>
 
                                      II-4
<PAGE>
<TABLE>
<C>                                                     <S>                                       <C>
                      SIGNATURE                                          TITLE                         DATE
- ------------------------------------------------------  ----------------------------------------  ---------------
                /s/ A. LAWRENCE FAGAN                   Director                                   May 31, 1996
     -------------------------------------------
                  A. Lawrence Fagan
 
             /s/ RICHARD T. HENSHAW, III                Director                                   May 31, 1996
     -------------------------------------------
               Richard T. Henshaw, III
 
                /s/ G. T. BLANKENSHIP                   Director                                   May 31, 1996
     -------------------------------------------
                  G. T. Blankenship
 
                  /s/ NORMAN STEISEL                    Director                                   May 31, 1996
     -------------------------------------------
                    Norman Steisel
</TABLE>
 
                                      II-5
<PAGE>
                               INDEX TO EXHIBITS
 
<TABLE>
<CAPTION>
EXHIBIT NO.                                    DESCRIPTION OF EXHIBITS                                      PAGE
- -----------  -------------------------------------------------------------------------------------------  ---------
<C>          <S>                                                                                          <C>
       1.1   Form of Underwriting Agreement*
       3.1   Restated Certificate of Incorporation of the Company
       3.2   Amendment to Restated Certificate of Incorporation
       3.3   By-laws of the Company
       4.1   Specimen Common Stock Certificate*
       5.1   Opinion of Proskauer Rose Goetz & Mendelsohn LLP*
      10.1   Credit Agreement dated as of May 30, 1996 among the Company, Internationale Nederlanden
              (U.S.) Capital Corporation, as administrative agent, and Morgan Guaranty Trust Company of
              New York, as documentation agent, and the other financial institutions party thereto*
      10.2   Registration Rights Agreement dated as of January 1, 1996 among the Company and certain of
              its stockholders
      10.3   Employment Agreement dated as of June 1, 1996 between the Company and Richard De Young*
      10.4   Employment Agreement dated January 26, 1993 between the Company and John J. McDonnell, as
              amended
      10.5   Employment Agreement dated May 16, 1995 between the Company and Richard T. Kogler
      10.6   Employment Agreement dated June 2, 1995 between the Company and Ann L. Straw
      10.7   Employment Agreement dated May 3, 1994 between the Company and Lawrence R. Conrath
      10.8   American Disposal Services, Inc. 1996 Stock Option Plan*
      10.9   Form of Indemnification Agreement between the Company and its directors
      10.10  Form of Indemnification Agreement between the Company and its executive officers
      10.11  Form of Tax-Sharing Agreement between the Company and its executive officers*
      21.1   Subsidiaries of the Company*
      23.1   Consent of Ernst & Young LLP
      23.2   Consent of Ernst & Young LLP
      23.3   Consent of Arthur Andersen LLP
      23.4   Consent of Proskauer Rose Goetz & Mendelsohn LLP (included in exhibit 5.1)*
      24.1   Powers of Attorney are set forth on the signature page hereof
</TABLE>
 
- ------------------------
(*) To be filed by Amendment.

<PAGE>

                      RESTATED CERTIFICATE OF INCORPORATION
                                       OF
                        AMERICAN DISPOSAL SERVICES, INC.


          AMERICAN DISPOSAL SERVICES, INC., a corporation incorporated in the
State of Delaware, hereby certifies that (a) this Corporation's present name is
American Disposal Services, Inc., (b) its Certificate of Incorporation was
originally filed with the Secretary of State on November 7, 1995, (c) this
Restated Certificate of Incorporation has been duly adopted by written consent
of the Board of Directors of the Corporation (no shares of capital stock having
been issued as of the date hereof) in accordance with the provisions of Sections
241 and 245 of the General Corporation Law of the State of Delaware, and (d) the
Restated Certificate of Incorporation of this Corporation, as amended to the
date of filing of this Restated Certificate of Incorporation and including
amendments set forth herein but not separately filed, is restated, integrated
and amended in full to read as follows;

          FIRST:  The name of the Corporation is AMERICAN DISPOSAL SERVICES,
INC.

          SECOND:  The registered office of the Corporation is to be located at
1013 Centre Road, Wilmington, New Castle County, Delaware 19805-1297.  The name
of its registered agent at that address is The Prentice-Hall Corporation System,
Inc.

          THIRD:  The purpose of the Corporation is to engage in any lawful act
or activity for which corporations may be organized under the General
Corporation Law of Delaware.

          FOURTH:  (a)   CAPITAL STOCK.

                    (i)  NUMBER AND DESIGNATION OF SHARES.  The Corporation is
authorized to issue three classes of stock designated "Class A Common Stock,"
"Class B Common Stock" and "Preferred Stock," respectively.  The total number of
shares of Class A Common Stock authorized to be issued is 890,000 and each such
share shall have a par value of one cent ($.01).  The total number of shares of
Class B Common Stock authorized to be issued is 10,000 and each such shares
shall have a par value of one cent ($.01).  The total number of shares of
Preferred Stock authorized to be issued is 100,000 and each such share shall
have a par value of one dollar ($1.00).

          (b)  CLASS A COMMON STOCK AND CLASS B COMMON STOCK.

                    (i)  RIGHTS AND PRIVILEGES GENERALLY; VOTING.  The shares of
Class A Common Stock and Class B Common Stock shall be identical in all respects
and shall have equal rights and privileges, except as to voting rights.  Each
holder of shares of
<PAGE>

Class A Common Stock shall be entitled to one (1) vote for each share thereof
held, upon each matter submitted to a vote of the stockholders of the
Corporation.  Each holder of shares of Class B Common Stock shall be entitled to
no votes for each share thereof held, except as otherwise provided by the
Delaware General Corporation Law or any other applicable statute.  Without
limiting the generality of the foregoing, the holders of shares of Class B
Common Stock shall have no right to nominate any person to the board of
directors of the Corporation, but shall be entitled to notification as to any
meeting of the stockholders of the Corporation and may attend such meetings.

                    (ii) CONVERSION OF CLASS B COMMON STOCK.  In the event the
holder of any shares of the Class B Common Stock is a person other than (A)
Internationale Nederlanden (U.S.) Capital Corporation ("ING"), (B) a financial
institution that is or becomes a party to a credit or loan agreement with the
Corporation (a "Lender") or (C) an "affiliate" on ING or a Lender, such holder
shall have the right to convert at such holder's option all or any number of
such shares of Class B Common Stock into an equal number of fully paid and
nonassessable shares of Class A Common Stock; provided such conversion ratio
shall be appropriately adjusted so as to avoid any dilution in the relative
rights of the Class B Common Stock to the Class A Common Stock in the event of
any subdivision (by stock split or otherwise), combination (by reverse stock
split or otherwise) or reclassification of the Class A Common Stock.

          As used herein, the term "affiliate" of any person or entity means any
other person or entity directly or indirectly controlling, controlled by or
under direct or indirect common control with such person or entity, any member
of the immediate family of such person or any person who is the executor,
administrator or other personal representative of such person.

          The holder of any shares of Class B Common Stock may exercise the
conversion right provided herein by giving written notice (the "Class B
Conversion Notice") to the Corporation stating the number of shares of Class B
Common Stock to be converted (the "Class B Conversion Shares") and the name or
names in which the stock certificate or stock certificates for the shares of
class A Common Stock are to be delivered.  The Class B Conversion Notice shall
be accompanied by the stock certificate or stock certificates representing the
Class B Conversion Shares, duly endorsed to the corporation or accompanied by a
written instrument of transfer.

          Conversion of the Class B Common Stock into Class A Common Stock shall
be deemed to have been effected on the date the Class B Conversion Notice is
delivered to the Corporation.  Within ten business days after receipt of the
Class B Conversion Notice, the corporation shall issue and deliver by hand
against a signed receipt therefor or by United States registered mail,


                                        2
<PAGE>

return receipt requested, to the address designated by the holder of the Class B
Conversion Shares in the Class B Conversion Notice, a stock certificate or stock
certificates of the Corporation representing the number of shares of Class A
Common Stock to which such holder is entitled.  In the event that only a portion
of the number of shares of Class B Common Stock represented by a stock
certificate surrendered for conversion shall be Class B Conversion Shares, the
Corporation shall issue and deliver in the manner aforesaid to the holder of the
stock certificate so surrendered for conversion a new stock certificate for the
number of unconverted shares of Class B Common Stock.

          (c)  PREFERRED STOCK.  The Preferred Stock may be issued from time to
time in one or more series.  The Board of Directors is hereby authorized, by
filing a certificate pursuant to the applicable law of the State of Delaware, to
establish from time to time the number of shares to be included in each such
series, and to fix the designation, powers, preferences and rights of the shares
of each such series and the qualifications, limitations or restrictions thereof,
including but not limited to the fixing or alteration of the dividend rights,
dividend rate, conversion rights, voting rights, rights and terms of redemption
(including sinking fund provisions), the redemption price or prices, and the
liquidation preferences of any wholly unissued series of shares of Preferred
Stock, or any of them; and to increase or decrease the number of shares of any
series subsequent to the issue of the shares of that series, but not below the
number of shares of such series then outstanding.  In case the number of shares
of any series shall be so decreased, the shares constituting such decrease shall
resume the status which they had prior to the adoption of the resolution
originally fixing the number of shares of such series.

          FIFTH:  A director of this corporation shall not be personally liable
to the Corporation or its stockholders for monetary damages for the breach of
any fiduciary duty as a director, except for liability (a) for any breach of the
director's duty of loyalty to the Corporation or its stockholders, (b) for acts
or omissions not in good faith or that involve intentional misconduct or a
knowing violation of law, (c) under section 174 of the General Corporation Law
of the State of Delaware or (d) for any transaction from which the director
personally gained in fact a financial profit or other advantage to which he was
not legally entitled.

          SIXTH:  The Corporation shall indemnify each officer or director of
the Corporation and the legal representatives thereof, including but not limited
the heirs, executors and administrators thereof, who was or is a party or is
threatened to be made a party to any action, suit, or proceeding whether civil,
criminal, administrative or investigative (other than an action by or in the
right of the Corporation) (hereinafter, "proceeding"), by reason of the fact
that he or she or a person


                                        3
<PAGE>

for whom he or she is the legal representative is or was a director or officer
of the Corporation or is or was serving at the request of the Corporation as a
director, officer, employee or agent, of another Corporation, or any
partnership, joint venture, trust or other enterprise, including service with
respect to employee benefit plans, to the fullest extent authorized or permitted
by the General Corporation Law, as the same exists or may hereafter be amended
(but, in the case of any amendment, only to the extent that such amendment
permits the Corporation to provide broader indemnification rights than said law
permitted the corporation to provide prior to such amendment), against expenses
(including attorneys' fees) judgments, fines, ERISA excise taxes or penalties
and amounts paid or to be paid in settlement actually and reasonably incurred by
such person in connection with such proceeding; PROVIDED that such person acted
in good faith and in a manner such person 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 or her conduct was
unlawful.  Such indemnification shall continue as to a person who has ceased to
be a director or officer, and shall inure to the benefit of his or her legal
representatives.  Notwithstanding the foregoing, except as provided in this
Article, the Corporation shall indemnify any such person seeking Indemnification
in connection with a proceeding (or part thereof) initiated by such person only
if such proceeding (or part thereof) was authorized by the Board of Directors of
the Corporation.  The right to indemnification conferred in this Article shall
be a contract right and shall include the right to be paid by the Corporation
the expenses incurred in defending any such proceeding in advance of its final
disposition; provided, however, that, if the General Corporation Law requires
that the payment of such expenses incurred by a director or officer in his or
her capacity as a director or officer of the Corporation (and not in any other
capacity in which service was or is rendered by such person while a director or
officer, including, without limitation, service to an employee benefit plan) in
advance of the final disposition of a proceeding may be made only upon delivery
to the Corporation of an undertaking, by or on behalf of such director or
officer, to repay all amounts so advanced if it shall ultimately be determined
that such director or officer is not entitled to be indemnified under this
Article or otherwise, then such advancement of expenses shall be subject to the
receipt of such undertaking.  The right to indemnification pursuant to this
Article is intended to be retroactive and shall, to the extent permitted by
applicable law, be available with respect to events occurring prior to the
adoption hereof and shall continue to exist after any future rescission or
restrictive modification hereof with respect to any alleged cause of action that
accrues, or any other incident or matter that occurs, prior to such rescission
or modification.  The indemnification provided for in this Certificate of
Incorporation shall not be deemed exclusive of any other rights to which a
person seeking indemnification may


                                        4
<PAGE>

be entitled under any by-law, agreement, vote of stockholders or disinterested
directors or otherwise.

          SEVENTH:  Unless, and except to the extent that, the by-laws of the
Corporation shall so require, the election of directors of the Corporation need
not be by written ballot.

          EIGHTH:  The board of directors may from time to time adopt, amend or
repeal the by-laws of the Corporation, subject to the power of the stockholders
to adopt any by-laws or to amend or repeal any by-laws adopted, amended or
repealed by the board of directors.

          NINTH:  Whenever a compromise or arrangement is proposed between the
Corporation and its creditors or any class of them and/or between the
Corporation and its stockholders or any class of them, any court of equitable
jurisdiction within the State of Delaware may, on the application in a summary
way of the Corporation or of any creditor or stockholder thereof or on the
application of any receiver or receivers appointed for the Corporation under the
provisions of Section 291 of Title 8 of the Delaware Code or on the application
of trustees in dissolution or of any receiver or receivers appointed for the
Corporation under the provisions of Section 279 of Title 8 of the Delaware Code
order a meeting of the creditors or class of creditors, and/or of the
stockholders or class of stockholders of the Corporation, as the case may be, to
be summoned in such manner as the said court directs.  If a majority in number
representing three fourths in value of the creditors or class of creditors,
and/or of the stockholders or class of stockholders of the Corporation, as the
case may be, agree to any compromise or arrangement and to any reorganization of
the Corporation as a consequence of such compromise or arrangement, the said
compromise or arrangement and the said reorganization shall, if sanctioned by
the court to which the said application has been made, be binding on all the
creditors or class of creditors, and/or on all the stockholders or class of
stockholders, of the Corporation, as the case may be, and also on the
Corporation.

          IN WITNESS WHEREOF, the undersigned has executed this Restated
Certificate of Incorporation of American Disposal Services, Inc., and
acknowledge, under penalties of perjury, that this instrument is the act and
deed of the Corporation and that the facts stated herein are true.


                                   /s/ Stephen W. Rubin
                                   --------------------
                                   Stephen W. Rubin
                                   Assistant Secretary


                                        5

<PAGE>

                            CERTIFICATE OF AMENDMENT

                                       OF

                          CERTIFICATE OF INCORPORATION

                                       OF

                        AMERICAN DISPOSAL SERVICES, INC.


          The undersigned corporation, in order to amend its Restated
Certificate of Incorporation, hereby certifies as follows:

          FIRST:    The name of the corporation (the "Corporation") is:

                    AMERICAN DISPOSAL SERVICES, INC.

          SECOND:   The Corporation hereby amends its Restated Certificate of
Incorporation as follows:

          Article FOURTH is hereby amended to read, in its entirety, as follows:

          "FOURTH:  The total number of shares of capital stock which the
Corporation shall have authority to issue is twenty-five million (25,000,000)
shares, consisting of twenty million (20,000,000) shares of common stock, par
value one cent ($0.01) per share ("Common Stock"), and five million (5,000,000)
shares of preferred stock, par value ($0.01) per share ("Preferred Stock").

          A.  RECAPITALIZATION:  The number of presently outstanding shares of
Common Stock (418,446.079831 shares of Class A Common Stock with a par value of
$.01 per share and 2,065.15 shares of Class B Common Stock with a par value of
$.01 per share) shall be reclassified and changed on the basis of (i) 13.5
shares of Common Stock for every one (1) share of Class A Common Stock presently
outstanding and (ii) 13.5 shares of Common Stock for every one (1) share of
Class B Common Stock presently outstanding, with the result that (X) the
418,446.079831 presently outstanding shares of Class A Common Stock shall be

<PAGE>

converted into a total of 5,649,022.07771 outstanding shares of Common Stock and
(Y) the 2065.15 presently outstanding shares of Class B Common Stock shall be
converted into a total of 27,879.525 outstanding shares of Common Stock.

     B.   PREFERRED STOCK.  The Preferred Stock may be issued from time to time
in one or more series.  The Board of Directors is hereby authorized, by filing a
certificate pursuant to the applicable law of the State of Delaware, to
establish from time to time the number of shares to be included in each such
series, and to fix the designation, powers, preferences and rights of the shares
of each such series and the qualifications, limitations or restrictions thereof,
including but not limited to the fixing or alteration of the dividend rights,
dividend rate, conversion rights, voting rights, rights and terms of redemption
(including sinking fund provisions), the redemption price or prices, and the
liquidation preferences of any wholly unissued series of shares of Preferred
Stock, or any of them; and to increase or decrease the number of shares of any
series subsequent to the issue of the shares of that series, but not below the
number of shares of such series then outstanding.  In case the number of shares
of any series shall be so decreased, the shares constituting such decrease shall
resume the status which they had prior to the adoption of the resolution
originally fixing the number of shares of such series."

          THIRD:    The written amendment effected herein was authorized by the
written consent, setting forth the action so taken, of the stockholders of the
Corporation entitled to vote thereon pursuant to Sections 228(a) and 242 of the
General Corporation Law of the State of Delaware and written notice has been
given as provided in Section 228(d) of the General Corporation Law of the State
of Delaware.

<PAGE>

          IN WITNESS WHEREOF, the Corporation has caused this Amendment to the
Corporation's Restated Certificate of Incorporation to be signed by its
Vice President this 30th day of May, 1996.


                                   AMERICAN DISPOSAL SERVICES, INC.


                                   By:  /s/ Lawrence R. Conrath
                                        Name:  Lawrence R. Conrath
                                        Title: Vice President


<PAGE>

                                     BY-LAWS

                                       OF

                        AMERICAN DISPOSAL SERVICES, INC.


1.   MEETINGS OF STOCKHOLDERS.

          1.1  ANNUAL MEETING.  The annual meeting of stock-holders shall be
held on the first Monday of May in each year, or as soon thereafter as
practicable, and shall be held at a place and time determined by the board of
directors (the "Board").

          1.2  SPECIAL MEETINGS.  Special meetings of the stockholders may be
called by resolution of the Board or the chairman and shall be called by the
chairman or secretary upon the written request (stating the purpose or purposes
of the meeting) of a majority of the directors then in office or of the holders
of a majority of the outstanding shares entitled to vote.  Only business related
to the purposes set forth in the notice of the meeting may be transacted at a
special meeting.

          1.3  PLACE AND TIME OF MEETINGS.  Meetings of the stockholders may be
held in or outside Delaware at the place and time specified by the Board or the
officers or stockholders requesting the meeting.

          1.4  NOTICE OF MEETINGS; WAIVER OF NOTICE.  Written notice of each
meeting of stockholders shall be given to each stockholder entitled to vote at
the meeting, except that (a) it
<PAGE>

shall not be necessary to give notice to any stockholder who submits a signed
waiver of notice before or after the meeting, and (b) no notice of an adjourned
meeting need be given, except when required under section 1.5 below or by law.
Each notice of a meeting shall be given, personally or by mail, not fewer than
10 nor more than 60 days before the meeting and shall state the time and place
of the meeting, and, unless it is the annual meeting, shall state at whose
direction or request the meeting is called and the purposes for which it is
called.  If mailed, notice shall be considered given when mailed to a
stockholder at his address on the corporation's records.  The attendance of any
stockholder at a meeting, without protesting at the beginning of the meeting
that the meeting is not lawfully called or convened, shall constitute a waiver
of notice by him.

          1.5  QUORUM.  At any meeting of stockholders, the presence in person
or by proxy of the holders of a majority of the shares entitled to vote shall
constitute a quorum for the transaction of any business.  In the absence of a
quorum, a majority in voting interest of those present or, if no stockholders
are present, any officer entitled to preside at or to act as secretary of the
meeting, may adjourn the meeting until a quorum is present.  At any adjourned
meeting at which a quorum is present, any action may be taken that might have
been taken at the meeting as originally called.  No notice of an adjourned
meeting need be given, if the time and place are announced at the meeting at
which the adjournment is taken, except that, if


                                       -2-
<PAGE>

adjournment is for more than 30 days or if, after the adjournment, a new record
date is fixed for the meeting, notice of the adjourned meeting shall be given
pursuant to section 1.4.

          1.6  VOTING; PROXIES.  Each stockholder of record shall be entitled to
one vote for each share registered in his name.  Corporate action to be taken by
stockholder vote, other than the election of directors, shall be authorized by a
majority of the votes cast at a meeting of stockholders, except as otherwise
provided by law or by section 1.8.  Directors shall be elected in the manner
provided in section 2.1.  Voting need not be by ballot, unless requested by a
majority of the stockholders entitled to vote at the meeting or ordered by the
chairman of the meeting.  Each stockholder entitled to vote at any meeting of
stockholders or to express consent to or dissent from corporate action in
writing without a meeting may authorize another person to act for him by proxy.
No proxy shall be valid after three years from its date, unless it provides
otherwise.

          1.7  LIST OF STOCKHOLDERS.  Not fewer than 10 days prior to the date
of any meeting of stockholders, the secretary of the corporation shall prepare a
complete list of stockholders entitled to vote at the meeting, arranged in
alphabetical order and showing the address of each stockholder and the number of
shares registered in his name.  For a period of not fewer than 10 days prior to
the meeting, the list shall be available during ordinary business hours for
inspection by any stockholder for any purpose germane to the meeting.  During
this period, the list


                                       -3-
<PAGE>

shall be kept either (a) at a place within the city where the meeting is to be
held, if that place shall have been specified in the notice of the meeting, or
(b) if not so specified, at the place where the meeting is to be held.  The list
shall also be available for inspection by stockholders at the time and place of
the meeting.

          1.8  ACTION BY CONSENT WITHOUT A MEETING.  Any action required or
permitted to be taken at any meeting of stockholders may be taken without a
meeting, without prior notice and without a vote, if a consent in writing,
setting forth the action so taken, shall be signed by the holders of outstanding
stock having not fewer than the minimum number of votes that would be necessary
to authorize or take such action at a meeting at which all shares entitled to
vote thereon were present and voting.  Prompt notice of the taking of any such
action shall be given to those stockholders who did not consent in writing.

2.   BOARD OF DIRECTORS.

          2.1  NUMBER, QUALIFICATION, ELECTION AND TERM OF DIRECTORS.  The
business of the corporation shall be managed by the entire Board, which
initially shall consist of six directors.  The number of directors may be
changed by resolution of a majority of the Board or by the stockholders, but no
decrease may shorten the term of any incumbent director.  Directors shall be
elected at each annual meeting of stockholders by a plurality of the votes cast
and shall hold office until the next annual meeting of stockholders and until
the election and qualification


                                       -4-
<PAGE>

of their respective successors, subject to the provisions of section 2.9.  As
used in these by-laws, the term "entire Board" means the total number of
directors the corporation would have, if there were no vacancies on the Board.

          2.2  QUORUM AND MANNER OF ACTING.  A majority of the entire Board
shall constitute a quorum for the transaction of business at any meeting, except
as provided in section 2.10.  Action of the Board shall be authorized by the
vote of the majority of the directors present at the time of the vote, if there
is a quorum, unless otherwise provided by law or these by-laws.  In the absence
of a quorum, a majority of the directors present may adjourn any meeting from
time to time until a quorum is present.

          2.3  PLACE OF MEETINGS.  Meetings of the Board may be held in or
outside Delaware.

          2.4  ANNUAL AND REGULAR MEETINGS.  Annual meetings of the Board, for
the election of officers and consideration of other matters, shall be held
either (a) without notice immediately after the annual meeting of stockholders
and at the same place, or (b) as soon as practicable after the annual meeting of
stockholders, on notice as provided in section 2.6.  Regular meetings of the
Board may be held without notice at such times and places as the Board
determines.  If the day fixed for a regular meeting is a legal holiday, the
meeting shall be held on the next business day.


                                       -5-
<PAGE>

          2.5  SPECIAL MEETINGS.  Special meetings of the Board may be called by
the chairman or by a majority of the directors.

          2.6  NOTICE OF MEETINGS; WAIVER OF NOTICE.  Notice of the time and
place of each special meeting of the Board, and of each annual meeting not held
immediately after the annual meeting of stockholders and at the same place,
shall be given to each director by mailing it to him at his residence or usual
place of business at least three days before the meeting, or by delivering or
telephoning or telegraphing it to him at least two days before the meeting.
Notice of a special meeting also shall state the purpose or purposes for which
the meeting is called.  Notice need not be given to any director who submits a
signed waiver of notice before or after the meeting or who attends the meeting
without protesting at the beginning of the meeting the transaction of any
business because the meeting was not lawfully called or convened.  Notice of any
adjourned meeting need not be given, other than by announcement at the meeting
at which the adjournment is taken.

          2.7  BOARD OR COMMITTEE ACTION WITHOUT A MEETING.  Any action required
or permitted to be taken by the Board or by any committee of the Board may be
taken without a meeting, if all the members of the Board or the committee
consent in writing to the adoption of a resolution authorizing the action.  The
resolution and the written consents by the members of the Board or the committee
shall be filed with the minutes of the proceedings of the Board or the
committee.


                                       -6-
<PAGE>

          2.8  PARTICIPATION IN BOARD OR COMMITTEE MEETINGS BY CONFERENCE
TELEPHONE.  Any or all members of the Board or any committee of the Board may
participate in a meeting of the Board or the committee by means of a conference
telephone or similar communications equipment allowing all persons participating
in the meeting to hear each other at the same time.  Participation by such means
shall constitute presence in person at the meeting.

          2.9  RESIGNATION AND REMOVAL OF DIRECTORS.  Any director may resign at
any time by delivering his resignation in writing to the president or secretary
of the corporation, to take effect at the time specified in the resignation; the
acceptance of a resignation, unless required by its terms, shall not be
necessary to make it effective.  Any or all of the directors may be removed at
any time, either with or without cause, by vote of the stockholders.

          2.10  VACANCIES.  Any vacancy in the Board, including one created by
an increase in the number of directors, may be filled for the unexpired term by
a majority vote of the remaining directors, though less than a quorum.

          2.11  COMPENSATION.  Directors shall receive such compensation as the
Board determines, together with reimbursement of their reasonable expenses in
connection with the performance of their duties.  A director also may be paid
for serving the corporation or its affiliates or subsidiaries in other
capacities.


                                       -7-
<PAGE>

3.   COMMITTEES.

          3.1  EXECUTIVE COMMITTEE.  The Board, by resolution adopted by a
majority of the entire Board, may designate an executive committee of one or
more directors, which shall have all the powers and authority of the Board,
except as otherwise provided in the resolution, section 141(c) of the General
Corporation Law of Delaware or any other applicable law.  The members of the
executive committee shall serve at the pleasure of the Board.  All action of the
executive committee shall be reported to the Board at its next meeting.

          3.2  OTHER COMMITTEES.  The Board, by resolution adopted by a majority
of the entire Board, may designate other committees of one or more directors,
which shall serve at the Board's pleasure and have such powers and duties as the
Board determines.

          3.3  RULES APPLICABLE TO COMMITTEES.  The Board may designate one or
more directors as alternate members of any committee, who may replace any absent
or disqualified member at any meeting of the committee.  In case of the absence
or disqualification of any member of a committee, the member or members present
at a meeting of the committee and not disqualified, whether or not a quorum, may
unanimously appoint another director to act at the meeting in place of the
absent or disqualified member.  All action of a committee shall be reported to
the Board at its next meeting.  Each committee shall adopt


                                       -8-
<PAGE>

rules of procedure and shall meet as provided by those rules or by resolutions
of the Board.

4.   OFFICERS.

          4.1  NUMBER; SECURITY.  The executive officers of the corporation
shall be the chairman, a vice chairman, president, one or more vice presidents
(including an executive vice president, if the Board so determines), a secretary
and a treasurer.  Any two or more offices may be held by the same person.  The
board may require any officer, agent or employee to give security for the
faithful performance of his duties.

          4.2  ELECTION; TERM OF OFFICE.  The executive officers of the
corporation shall be elected annually by the Board, and each such officer shall
hold office until the next annual meeting of the Board and until the election of
his successor, subject to the provisions of section 4.4.

          4.3  SUBORDINATE OFFICERS.  The Board may appoint subordinate officers
(including assistant secretaries and assistant treasurers), agents or employees,
each of whom shall hold office for such period and have such powers and duties
as the Board determines.  The Board may delegate to any executive officer or
committee the power to appoint and define the powers and duties of any
subordinate officers, agents or employees.

          4.4  RESIGNATION AND REMOVAL OF OFFICERS.  Any officer may resign at
any time by delivering his resignation in writing to the president or secretary
of the corporation, to take effect


                                       -9-
<PAGE>

at the time specified in the resignation; the acceptance of a resignation,
unless required by its terms, shall not be necessary to make it effective.  Any
officer elected or appointed by the Board or appointed by an executive officer
or by a committee may be removed by the Board either with or without cause, and
in the case of an officer appointed by an executive officer or by a committee,
by the officer or committee that appointed him or by the president.

          4.5  VACANCIES.  A vacancy in any office may be filled for the
unexpired term in the manner prescribed in sections 4.2 and 4.3 for election or
appointment to the office.

          4.6  THE CHAIRMAN.  The Chairman of the Board of Directors must be a
director of the corporation.  The Chairman shall preside at all meetings of the
Board of Directors and of the stockholders and shall have such powers and
perform such other duties as from time to time may be assigned to him by the
Board of Directors.

          4.7  THE VICE CHAIRMAN.  The vice chairman shall have such powers and
perform such duties as the Board or the chairman may from time to time prescribe
or as may be prescribed in these By-laws, and in the event of the absence,
incapacity or inability to act of the chairman, then the vice chairman shall
perform the duties and exercise the powers of the chairman.


                                      -10-
<PAGE>

          4.8  PRESIDENT.  The president shall have such powers and perform such
duties as the Board or the chairman may from time to time prescribe or as may be
prescribed in these By-laws.

          4.9  VICE PRESIDENT.  Each vice president shall have such powers and
duties as the Board or the chairman assigns to him.

          4.10 THE TREASURER.  The treasurer shall be the chief financial
officer of the corporation and shall be in charge of the corporation's books and
accounts.  Subject to the control of the Board, he shall have such other powers
and duties as the Board or the president assigns to him.

          4.11 THE SECRETARY.  The secretary shall be the secretary of, and keep
the minutes of, all meetings of the Board and the stockholders, shall be
responsible for giving notice of all meetings of stockholders and the Board, and
shall keep the seal and, when authorized by the Board, apply it to any
instrument requiring it.  Subject to the control of the Board, he shall have
such powers and duties as the Board or the president assigns to him.  In the
absence of the secretary from any meeting, the minutes shall be kept by the
person appointed for that purpose by the presiding officer.

          4.12  SALARIES.  The Board may fix the officers salaries, if any, or
it may authorize the chairman to fix the salary of any other officer.


                                      -11-
<PAGE>

5.   SHARES.

          5.1  CERTIFICATES.  The corporation's shares shall be represented by
certificates in the form approved by the Board.  Each certificate shall be
signed by the chairman or vice chairman, and by the secretary or assistant
secretary or the treasurer or an assistant treasurer, and shall be sealed with
the corporation's seal or a facsimile of the seal.  Any or all of the signatures
on the certificate may be a facsimile.

          5.2  TRANSFERS.  Shares shall be transferable only on the
corporation's books, upon surrender of the certificate for the shares, properly
endorsed.  The Board may require satisfactory surety before issuing a new
certificate to replace a certificate claimed to have been lost or destroyed.

          5.3  DETERMINATION OF STOCKHOLDERS OF RECORD.  The Board may fix, in
advance, a date as the record date for the determination of stockholders
entitled to notice of or to vote at any meeting of the stockholders, or to
express consent to or dissent from any proposal without a meeting, or to receive
payment of any dividend or the allotment of any rights, or for the purpose of
any other action.  The record date may not be more than 60 or fewer than 10 days
before the date of the meeting or more than 60 days before any other action.

6.   INDEMNIFICATION AND INSURANCE.

          6.1  RIGHT TO INDEMNIFICATION.  Each person who was or is a party or
is threatened to be made a party to or is involved


                                      -12-
<PAGE>

in any action, suit or proceeding, whether civil, criminal, administrative or
investigative (a "proceeding"), by reason of the fact that he, or a person of
whom he is the legal representative, is or was a director or officer of the
corporation or is or was serving at the request of the corporation as a
director, officer, employee or agent of another corporation or of a partnership,
joint venture, trust or other enterprise, including service with respect to
employee benefit plans, whether the basis of such proceeding is alleged action
or inaction in an official capacity or in any other capacity while serving as
director, officer, employee or agent, shall be indemnified and held harmless by
the corporation to the fullest extent permitted by the General Corporation Law
of Delaware, as amended from time to time, against all costs, charges, expenses,
liabilities and losses (including attorneys' fees, judgments, fines, ERISA
excise taxes or penalties and amounts paid or to be paid in settlement)
reasonably incurred or suffered by such person in connection therewith, and that
indemnification shall continue as to a person who has ceased to be a director,
officer, employee or agent and shall inure to the benefit of his heirs,
executors and administrators; provided, however, that, except as provided in
section 6.2, the corporation shall indemnify any such person seeking
indemnification in connection with a proceeding (or part thereof) initiated by
that person, only if that proceeding (or part thereof) was authorized by the
Board.  The right to indemnification conferred in these by-laws shall be a
contract right and shall include the right to be paid by the


                                      -13-
<PAGE>

corporation the expenses incurred in defending any such proceeding in advance of
its final disposition; provided, however, that, if the General Corporation Law
of Delaware, as amended from time to time, requires, the payment of such
expenses incurred by a director or officer in his capacity as a director or
officer (and not in any other capacity in which service was or is rendered by
that person while a director or officer, including, without limitation, service
to an employee benefit plan) in advance of the final disposition of a proceeding
shall be made only upon delivery to the corporation of an undertaking, by or on
behalf of such director or officer, to repay all amounts so advanced, if it
shall ultimately be determined that such director or officer is not entitled to
be indemnified under these by-laws or otherwise.  The corporation may, by action
of its Board, provide indemnification to employees and agents of the corporation
with the same scope and effect as the foregoing indemnification of directors and
officers.

          6.2  RIGHT OF CLAIMANT TO BRING SUIT.  If a claim under section 6.1 is
not paid in full by the corporation within 30 days after a written claim has
been received by the corporation, the claimant may at any time thereafter bring
suit against the corporation to recover the unpaid amount of the claim and, if
successful in whole or in part, the claimant also shall be entitled to be paid
the expense of prosecuting that claim.  It shall be a defense to any such action
(other than an action brought to enforce a claim for expenses incurred in
defending any


                                      -14-
<PAGE>

proceeding in advance of its final disposition, where the required undertaking,
if any, is required and has been tendered to the corporation) that the claimant
has failed to meet a standard of conduct that makes it permissible under
Delaware law for the corporation to indemnify the claimant for the amount
claimed.  Neither the failure of the corporation (including its Board, its
independent legal counsel or its stockholders) to have made a determination
prior to the commencement of such action that indemnification of the claimant is
permissible in the circumstances because he has met that standard of conduct,
nor an actual determination by the corporation (including its Board, its
independent counsel or its stockholders) that the claimant has not met that
standard of conduct, shall be a defense to the action or create a presumption
that the claimant has failed to meet that standard of conduct.

          6.3  NON-EXCLUSIVITY OF RIGHTS.  The right to indemnification and the
payment of expenses incurred in defending a proceeding in advance of its final
disposition conferred in this section 6 shall not be exclusive of any other
right any person may have or hereafter acquire under any statute, provision of
the certificate of incorporation, by-law, agreement, vote of stockholders or
disinterested directors or otherwise.

          6.4  INSURANCE.  The corporation may maintain insurance, at its
expense, to protect itself and any director, officer, employee or agent of the
corporation or another corporation, partnership, joint venture, trust or other


                                      -15-
<PAGE>

enterprise against any such expense, liability or loss, whether or not the
corporation would have the power to indemnify such person against that expense,
liability or loss under Delaware law.

          6.5  EXPENSES AS A WITNESS.  To the extent any director, officer,
employee or agent of the corporation is by reason of such position, or a
position with another entity at the request of the corporation, a witness in any
action, suit or proceeding, he shall be indemnified against all costs and
expenses actually and reasonably incurred by him or on his behalf in connection
therewith.

          6.6  INDEMNITY AGREEMENTS.  The corporation may enter into agreement
with any director, officer, employee or agent of the corporation providing for
indemnification to the fullest extent permitted by Delaware law.

7.   MISCELLANEOUS.

          7.1  SEAL.  The Board shall adopt a corporate seal, which shall be in
the form of a circle and shall bear the corporation's name and the year and
state in which it was incorporated.

          7.2  FISCAL YEAR.  The Board may determine the corporation's fiscal
year.  Until changed by the Board, the last day of the corporation's fiscal year
shall be December 31.


                                      -16-
<PAGE>

          7.3  VOTING OF SHARES IN OTHER CORPORATIONS.  Shares in other
corporations held by the corporation may be represented and voted by an officer
of this corporation or by a proxy or proxies appointed by one of them.  The
Board may, however, appoint some other person to vote the shares.

          7.4  AMENDMENTS.  By-laws may be amended, repealed or adopted by the
stockholders.


                                      -17-


<PAGE>



                          REGISTRATION RIGHTS AGREEMENT

                                      AMONG

                        AMERICAN DISPOSAL SERVICES, INC.

                                       AND

                                  THE INVESTORS








                           DATED AS OF JANUARY 1, 1996
<PAGE>


                                TABLE OF CONTENTS

                                                                            Page
                                                                            ----

1.   Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   3

2.   Required Registration . . . . . . . . . . . . . . . . . . . . . . . . .   3

3.   Incidental Registration . . . . . . . . . . . . . . . . . . . . . . . .   3

4.   Registration Procedures . . . . . . . . . . . . . . . . . . . . . . . .   4

5.   Expenses. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6

6.   Indemnification and Contribution. . . . . . . . . . . . . . . . . . . .   6

7.   Market Stand-Off Agreement. . . . . . . . . . . . . . . . . . . . . . .   9

8.   Miscellaneous . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   9
<PAGE>

                          REGISTRATION RIGHTS AGREEMENT


          Registration Rights Agreement, dated as of JANUARY 1, 1996, among
AMERICAN DISPOSAL SERVICES, INC., a Delaware corporation (the "COMPANY"), and
the Investors (as defined below).

                              W I T N E S S E T H:

          in consideration of the mutual covenants and agreements contained
herein and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, it is agreed as follows:

          1.   DEFINITIONS.  For purposes of this Agreement, the following terms
shall have the following respective meanings (such meanings being equally
applicable to both the singular and plural form of the terms defined):

          "AGREEMENT" means this Registration Rights Agreement, including all
amendments, modifications and supplements and any exhibits or schedules to any
of the foregoing, and shall refer to the Agreement as the same may be in effect
at the time such reference becomes operative.

          "COMMON STOCK" means shares of the Company's Class A Common Stock, par
value $.01 per share.

          "INVESTORS" means those persons and entities executing this Agreement
under the heading "Investors."

          "NASD" means the National Association of Securities Dealers, Inc., or
any successor corporation thereto.

          "REGISTERING SECURITY HOLDER" has the meaning given to it in
Section 3.

          "REGISTRABLE SECURITIES" means, collectively,  the shares of Common
Stock owned by Investors at the time of a Registration Request; PROVIDED,
HOWEVER, that any such securities shall cease to be Registrable Securities when
(i) such securities shall have been transferred, if new certificates or other
evidences of ownership for them not bearing a legend restricting further
transfer and not subject to any stop transfer order or other restrictions on
transfer shall have been delivered by the Company and subsequent disposition of
such securities shall not require registration or qualification of such
securities under the Securities Act or any state securities law then in force,
(ii) such securities shall cease to be outstanding or (iii) such securities
shall be eligible for sale pursuant to Rule 144(k) under the Securities Act or
any successor rule which permits resale of such securities without restriction.
<PAGE>

          "REGISTRATION REQUEST" has the meaning given to it in SECTION 2.

          2.   REQUIRED REGISTRATION.  Commencing one hundred eighty (180) days
after the closing of the Company's first underwritten public offering of its
capital stock, after receipt of a written request (a "REGISTRATION REQUEST")
from Investors collectively holding a majority of the Registrable Securities
then held by the Investors at the time of such request requesting that the
Company effect the registration of Registrable Securities under the Securities
Act and specifying the intended method or methods of disposition thereof, the
Company shall promptly notify all holders of Registrable Securities in writing
of the receipt of such request and each such holder may elect (by written notice
sent to the Company within ten days from the date of such holder's receipt of
the aforementioned Company's notice) to have all or any part of its Registrable
Securities included in such registration thereof pursuant to this SECTION 2.
Thereupon the Company shall, as expeditiously as is possible and subject to the
last sentence of this paragraph, use its best efforts to effect the registration
under the Securities Act of all shares of Registrable Securities which the
Company has been so requested to register by such holders for sale, all to the
extent required to permit the disposition (in accordance with the intended
method or methods thereof, as aforesaid) of the Registrable Securities so
registered; PROVIDED, HOWEVER, that, subject to the provisions of the
immediately following sentence, the Company shall not be required to effect more
than one registration of Registrable Securities pursuant to this SECTION 2.  In
order to count as an "effected" registration statement, such registration
statement shall not have been withdrawn and all shares registered pursuant to it
(excluding any overallotment shares) shall have been sold.  The Company shall
have the right to defer the filing of any registration statement requested
pursuant to this SECTION 2 for a period not to exceed one hundred twenty (120)
days if in the good faith determination of the Board of Directors of the Company
the filing of such registration statement would be seriously detrimental to the
Company.  If the managing underwriter of a proposed public offering of
Registrable Securities under this SECTION 2 shall advise the Company and the
security holders seeking to register such securities in writing that, in its
opinion, the distribution of all the Registrable Securities requested to be
included in the registration by such security holders would not be practicable,
then all security holders shall reduce the amount of securities each intended to
distribute through such offering on a pro rata basis.

          3.   INCIDENTAL REGISTRATION.  If the Company at any time after the
closing of its first underwritten public offering of its capital stock proposes
to file on its behalf and/or on behalf of any of its security holders (the
"REGISTERING SECURITY HOLDERS") a Registration Statement under the Securities
Act on any form (other than a Registration Statement on Form S-4 or S-8


                                        3
<PAGE>

or any successor form for securities to be offered in a transaction of the type
referred to in Rule 145 under the Securities Act or to employees of the Company
pursuant to any employee benefit plan, respectively) for the general
registration of securities to be sold for cash with respect to any class of
equity security (as defined in Section 3(a)(11) of the Securities Exchange Act)
of the Company, it will give written notice to all holders of Registrable
Securities at least thirty (30) days before the initial filing with the
Commission of such Registration Statement, which notice shall set forth the
intended method of disposition of the securities proposed to be registered by
the Company.  The notice shall offer to include in such filing the aggregate
number of shares of Registrable Securities as such holders may request.

          Each holder of any such Registrable Securities desiring to have
Registrable Securities registered under this SECTION 3 shall advise the Company
in writing within ten (10) days after the date of receipt of such offer from the
Company, setting forth the amount of such Registrable Securities for which
registration is requested.  The Company shall thereupon include in such filing
the number of shares of Registrable Securities for which registration is so
requested, subject to the next sentence, and shall use its best efforts to
effect registration under the Securities Act of such shares.  If the managing
underwriter of a proposed public offering shall advise the Company in writing
that, in its opinion, the distribution of the Registrable Securities requested
to be included in the registration concurrently with the securities being
registered by the Company or such registering security holder would materially
and adversely affect the distribution of such securities by the Company or such
registering security holder, then all holders of Registrable Securities shall
reduce the amount of securities each intended to distribute through such
offering on a pro rata basis.

          4.   REGISTRATION PROCEDURES.  If the Company is required by the
provisions of SECTION 2 or 3 to use its best efforts to effect the registration
of any of its securities under the Securities Act, the Company will, as
expeditiously as possible:

               (a)  prepare and file with the Commission a Registration
Statement with respect to such securities and use its best efforts to cause such
Registration Statement to become and remain effective for a period of time
required for the disposition of such securities by the holders thereof, but not
to exceed one hundred eighty (180) days;

               (b)  prepare and file with the Commission such amendments and
supplements to such Registration Statement and the prospectus used in connection
therewith as may be necessary to keep such Registration Statement effective and
to comply with the provisions of the Securities Act with respect to the sale or


                                        4
<PAGE>

other disposition of all securities covered by such Registration Statement until
the earlier of such time as all of such securities have been disposed of in a
public offering or the expiration of one hundred eighty (180) days;

               (c)  furnish to such selling security holders such number of
copies of a summary prospectus or other prospectus, including a preliminary
prospectus, in conformity with the requirements of the Securities Act, and such
other documents, as such selling security holders may reasonably request;

               (d)  use its best efforts to register or qualify the securities
covered by such Registration Statement under applicable state securities or
"blue sky" laws of such jurisdictions within the United States and Puerto Rico
as each holder of such securities shall request (PROVIDED, HOWEVER, that the
Company shall not be obligated to qualify as a foreign corporation to do
business under the laws of any jurisdiction in which it is not then qualified or
to file any general consent to service of process), and do such other reasonable
acts and things as may be required of it to enable such holder to consummate the
disposition in such jurisdiction of the securities covered by such Registration
Statement;

               (e)  furnish, in connection with any registration of Registrable
Securities, on the date that such shares of Registrable Securities are delivered
to the underwriters for sale pursuant to such registration or, if such
Registrable Securities are not being sold through underwriters, on the date that
the Registration Statement with respect to such shares of Registrable Securities
becomes effective, (1) an opinion, dated such date, of the counsel representing
the Company for the purposes of such registration, addressed to the
underwriters, if any, and if such Registrable Securities are not being sold
through underwriters, then to the holders making such request, in customary form
and covering matters of the type customarily covered in such legal opinions; and
(2) a comfort letter dated such date, from the independent certified public
accountants of the Company, addressed to the underwriters, if any, and if such
Registrable Securities are not being sold through underwriters, then to the
holder(s) of Registrable Securities being registered and, if such accountants
refuse to deliver such letter to such holder(s), then to the Company in a
customary form and covering matters of the type customarily covered by such
comfort letters and as the underwriters or such holder(s) shall reasonably
request.  Such opinion of counsel shall additionally cover such other legal
matters with respect to the registration in respect of which such opinion is
being given as such holder(s) of Registrable Securities may reasonably request
consistent with opinions customarily provided in similar transactions.  Such
letter from the independent certified public accountants shall additionally
cover such other financial matters (including information as to the period
ending not more than five (5) business days prior to


                                        5
<PAGE>

the date of such letter) with respect to the registration in respect of which
such letter is being given as such holders of the Registrable Securities being
so registered may reasonably request consistent with comfort letters customarily
provided in similar transactions;

               (a)  enter into customary agreements (including an underwriting
agreement in customary form) and take such other actions as are reasonably
required in order to expedite or facilitate the disposition of such Registrable
Securities; and

               (b)  otherwise use its best efforts to comply with all applicable
rules and regulations of the Commission, and make available to its security
holders, as soon as reasonably practicable, but not later than eighteen (18)
months after the effective date of the Registration Statement, an earnings
statement covering the period of at least twelve (12) months beginning with the
first full month after the effective date of such Registration Statement, which
earnings statements shall satisfy the provisions of Section 11(a) of the
Securities Act.

          It shall be a condition precedent to the obligation of the Company to
take any action pursuant to this Agreement in respect of the securities which
are to be registered at the request of any holder of Registrable Securities that
(i) such holder shall furnish to the Company such information regarding the
securities held by such holder and the intended method of disposition thereof as
the Company shall reasonably request and as shall be required under the
Securities Act in connection with the action taken by the Company and (ii) that
such holder shall deliver and perform under such underwriting and selling
shareholder agreements as may be reasonably requested by the underwriters.

          5.   EXPENSES.  All expenses incurred in complying with this
Agreement, including, without limitation, all registration and filing fees
(including all expenses incident to filing with the NASD), printing expenses,
fees and disbursements of counsel for the Company, expenses of any special
audits incident to or required by any such registration and expenses of
complying with applicable state securities or "blue sky" laws of any
jurisdictions pursuant to SECTION 4(d), shall be paid by the Company, except
that:

               (a)  The Company shall not be liable for any fees, discounts or
commissions to any underwriter in respect of the securities sold by such holder
of Registrable Securities; and

               (b)  The Company shall not be liable for any fees or expenses of
any separate counsel to the selling security holders.


                                        6
<PAGE>

          6.   INDEMNIFICATION AND CONTRIBUTION.  (a)  In the event of any
registration of any Registrable Securities under the Securities Act pursuant to
this Agreement, the Company shall indemnify and hold harmless the holder of such
Registrable Securities, such holder's directors and officers, and each other
Person (including each underwriter) who participated in the offering of such
Registrable Securities and each other Person, if any, who controls such holder
or such participating Person within the meaning of the Securities Act, against
any losses, claims, damages or liabilities, joint or several, to which such
holder or any such director or officer or participating Person or controlling
Person may become subject under the Securities Act or any other statute or at
common law, insofar as such losses, claims, damages or liabilities (or actions
in respect thereof) arise out of or are based upon (i) any alleged untrue
statement of any material fact contained in any Registration Statement under
which such securities were registered under the Securities Act, any preliminary
prospectus or final prospectus contained therein, or any amendment or supplement
thereto, or (ii) any alleged omission to state therein a material fact required
to be stated therein or necessary to make the statements therein not misleading,
and shall reimburse such holder or such director, officer or participating
Person or controlling Person for any legal or any other expenses reasonably
incurred by such holder or such director, officer or participating Person or
controlling Person in connection with investigating or defending any such loss,
claim, damage, liability or action; PROVIDED, HOWEVER, that the Company shall
not be liable in any such case to the extent that any such loss, claim, damage
or liability arises out of or is based upon any alleged untrue statement or
alleged omission made in such Registration Statement, preliminary prospectus,
prospectus or amendment or supplement in reliance upon and in conformity with
written information furnished to the Company by such holder specifically for use
therein.  Such indemnity shall remain in full force and effect regardless of any
investigation made by or on behalf of such holder or such director, officer or
participating Person or controlling Person, and shall survive the transfer of
such securities by such holder.

               (b)  In the event of any registration of any Registrable
Securities under the Securities Act pursuant to this Agreement, each holder of
Registrable Securities selling in connection with such registration shall
severally and not jointly indemnify and hold harmless the Company, its directors
and officers, and each other Person (including each underwriter) who
participated in the offering of such Registrable Securities and each other
Person, if any, who controls the Company or such participating Person within the
meaning of the Securities Act, against any losses, claims, damages or
liabilities, joint or several, to which the Company or any such director or
officer or participating Person or controlling Person may become subject under
the Securities Act or any other statute or at common law, insofar as such
losses, claims, damages or liabilities (or


                                        7
<PAGE>

actions in respect thereof) arise out of or are based upon any alleged untrue
statement of any material fact contained in any Registration Statement under
which such securities were registered under the Securities Act, any preliminary
prospectus or final prospectus contained therein, or any amendment or supplement
thereto, where such statement is in conformity with written information provided
by such holder expressly for use therein, and shall reimburse the Company or
such director, officer or participating Person or controlling Person for any
legal or any other expenses reasonably incurred by the Company or such director,
officer or participating Person or controlling Person in connection with
investigating or defending any such loss, claim, damage, liability or action;
PROVIDED, HOWEVER, that such holder shall not be liable for any amounts in
excess of the net proceeds received by such holder for the sale of its shares.
Such indemnity shall remain in full force and effect regardless of any
investigation made by or on behalf of the Company or such director, officer or
participating Person or controlling Person, and shall survive the transfer of
such securities by such holder.

               (c)  If the indemnification provided for in this SECTION 6 is
unavailable to an indemnified party hereunder in respect of any losses, claims,
damages, liabilities or expenses referred to therein, then the indemnifying
party, in lieu of indemnifying such indemnified party, shall contribute to the
amount paid or payable by such indemnified party as a result of such losses,
claims, damages, liabilities or expenses in such proportion as is appropriate to
reflect the relative fault of the indemnifying party and indemnified parties in
connection with the actions which resulted in such losses, claims, damages,
liabilities or expenses, as well as any other relevant equitable considerations.
The relative fault of such indemnifying party and indemnified parties shall be
determined by reference to, among other things, whether any action in question,
including any untrue or alleged untrue statement of a material fact or omission
or alleged omission to state a material fact, has been made by, or relates to
information supplied by, such indemnifying party or indemnified parties, and the
parties' relative intent, knowledge, access to information and opportunity to
correct or prevent such action.  The amount paid or payable by a party as a
result of the losses, claims, damages, liabilities and expenses referred to
above shall be deemed to include any legal or other fees or expenses reasonably
incurred by such party in connection with any investigation or proceeding.

          The parties hereto agree that it would not be just and equitable if
contribution pursuant to this SECTION 6(c) were determined by pro rata
allocation or by any other method of allocation which does not take account of
the equitable considerations referred to in the immediately preceding paragraph.
No Person guilty of fraudulent misrepresentation (within the meaning of Section
11(f) of the Securities Act) shall


                                        8
<PAGE>

be entitled to contribution from any Person who was not also guilty of such
fraudulent misrepresentation.

          7.   MARKET STAND-OFF AGREEMENT.  If requested by an underwriter of
securities of the Company each holder of Registrable Securities shall not sell
or otherwise transfer or dispose of any securities held by such holder during
the one hundred twenty (120) day period following the effective date of a
Registration Statement.

          8.   MISCELLANEOUS.

               (a)  CHANGES IN REGISTRABLE SECURITIES.  If, and as often as,
there are any changes in Registrable Securities by way of stock split, stock
dividend, combination or reclassification, or through merger, consolidation,
reorganization or by any other means, appropriate adjustment shall be made in
the provisions of this Agreement so that the rights and privileges granted
hereby shall continue with respect to the Registrable Securities as so changed.
Without limiting the generality of the foregoing, the Company will require any
successor by merger or consolidation to assume and agree to be bound by the
terms of this Agreement as a condition to any such merger or consolidation.

               (b)  NO INCONSISTENT AGREEMENTS.  This agreement supersedes all
prior agreements regarding registration rights between the Company and any of
the parties hereto and all such prior agreements are deemed terminated hereby.

               (c)  AMENDMENTS AND WAIVERS.  Except as otherwise provided
herein, the provisions of this Agreement may not be amended, modified or
supplemented, and waivers or consents to departure from the provisions hereof
may not be given unless Company has approved the same in writing and obtained
the written consent of Investors then holding a majority of the Registrable
Securities.

               (d)  NOTICES.  Any notice, demand, request, consent, approval,
declaration, delivery or other communication hereunder to be made pursuant to
the provisions of this Agreement shall be sufficiently given or made if in
writing and (i) delivered in person with receipt acknowledged, (ii) sent by
registered or certified mail, return receipt requested, postage prepaid, (iii)
sent by overnight courier with guaranteed next-day delivery, or (iv) sent by
telex or telecopier, in each case addressed as follows:

                    (i)  If to the Investors, to them at their most current
address on the Company's records.


                                        9
<PAGE>

                    (ii) If to the Company, to it at:


                    American Disposal Services, Inc.
                    745 McClintock Drive, Suite 305
                    Burr Ridge, Illinois  60521
                    Attention:  General Counsel
                    Fax:  (708) 655-1455


                    with a copy to:


                    Proskauer Rose Goetz & Mendelsohn LLP
                    1585 Broadway
                    New York, New York 10036
                    Attention:  Stephen W. Rubin, Esq.
                    Fax:  (212) 969-2900


or at such other address as may be substituted by notice given as herein
provided.  The giving of any notice required hereunder may be waived in writing
by the party entitled to receive such notice.  Every notice, demand, request,
consent, approval, declaration, delivery or other communication hereunder shall
be deemed to have been duly given or served on the date on which personally
delivered, with receipt acknowledged, or three (3) Business Days after the same
shall have been deposited in the United States mail, one business day after sent
by overnight courier or on the day telexed or telecopied.

               (e)  NO ASSIGNMENT.  This Agreement and the rights hereunder may
not be assigned by any party hereto.

               (f)  HEADINGS.  The headings in this Agreement are for
convenience of reference only and shall not limit or otherwise affect the
meaning hereof.

               (g)  GOVERNING LAW.  This Agreement shall be governed by and
construed in accordance with the internal laws of the State of New York (i.e.,
without regard to its conflicts of law rules).

               (h)  SEVERABILITY.  Wherever possible, each provision of this
Agreement shall be interpreted in such manner as to be effective and valid under
applicable law, but if any provision of this Agreement shall be prohibited by or
invalid under applicable law, such provision shall be ineffective to the extent
of such prohibition or invalidity, without invalidating the remainder of such
provision or the remaining provisions of this Agreement.


                                       10
<PAGE>

               (i)  ENTIRE AGREEMENT.  This Agreement represents the complete
agreement and understanding of the parties hereto in respect of the subject
matter contained herein and therein and supersedes all prior agreements and
understandings between the parties with respect to the subject matter hereof.


                                       11
<PAGE>

          IN WITNESS WHEREOF, the parties hereto have executed this Registration
Rights Agreement as of the date first above written.



Company:                      AMERICAN DISPOSAL SERVICES, INC.


                              By:
                                 --------------------------------
                              Title:


Investors:                    CDI EQUITY, LLC


                              By:  Aetna Life Insurance Company, a Member


                              By:
                                 --------------------------------
                                   Timothy A. Holt
                                   Vice President
                                   Portfolio Management Group


                              By:  CDI Equity, Inc., a Member


                              By:
                                 --------------------------------
                                   Thomas W. Hallagan
                                   President


                              CHARTERHOUSE EQUITY
                                PARTNERS II, L.P.


                              By:  CHUSA Equity Investors II, L.P.,
                                   general partner


                                   By:  Charterhouse Equity II,
                                        Inc., general partner


                                   By:
                                      ---------------------------
                                   Title:


                                       12
<PAGE>

                              CHEF NOMINEES LIMITED


                              By:  Charterhouse Group
                                     International, Inc.,
                                     Attorney-in-Fact


                              By:
                                 --------------------------------
                              Title:


                              CHARTERHOUSE ENVIRONMENTAL
                                HOLDINGS, L.L.C.


                              By:
                                 --------------------------------
                              Title:


                                       13

<PAGE>

January 26, 1993

Mr. John J. McDonnell
18404 Marshfield
Homewood, ILL.  60430

Dear John:

This letter should serve as our agreement concerning your employment and is
subject to your spending all of your normal working hours on the business of
American Disposal Services, Inc. ("ADS") during the term of this agreement.

SALARY

A five-year guaranteed contract starting at $80,000 in year one and increasing
15% per year to year five.  This salary would be guaranteed so long as you are
actively employed by ADS and spend all of your normal working hours on the
business of ADS.  This salary would be paid semi-monthly.  ADS shall be relieved
of any further obligation regarding its salary payments to you only if you
should voluntarily elect to terminate your employment with ADS.

STOCK

You will receive options to purchase 100,000 shares of the common stock of ADS
at $.714285 per share.  Your options would be able to be exercised at the rate
of twenty percent (20%) for each completed year of your employment agreement.
All of the options would expire six months after your fifth year anniversary
with ADS.

HEALTH INSURANCE, LIFE INSURANCE

You and your family would be entitled to participate in the Company's health
insurance and life insurance program.  No selection of a company to provide the
coverage has been made as yet, although the coverage would be consistent with
the quality of coverage generally provided to senior executives of Waste
Management.


<PAGE>

Mr. John J. McDonnell
January 26, 1993
Page 2


COMPANY AUTOMOBILE

You would be provided a company automobile and the Company will pay the
operating expenses associated with the vehicle.

This agreement supercedes all prior written or oral discussions between yourself
and ADS.

If all the elements of this letter conform with your understanding, please
acknowledge in the space provided below, and send me one copy in the attached
envelope.


Sincerely yours,

/s/ Ronald H. Burks
- -------------------
Ronald H. Burks,
President
RHB/dk


ACCEPTANCE:

/s/ John J. McDonnell
- -------------------------
John J. McDonnell
<PAGE>

                          RIDER TO EMPLOYMENT AGREEMENT


          THIS RIDER is attached to and made a part of a certain Employment
Contract dated January 26, 1993 between the Employer, American Disposal
Services, Inc. and the Employee, John J. McDonnell.

          NOTWITHSTANDING the terms and conditions of the attached Employment
Contract, the parties further represent and agree as follows:

          1.   The Employer's name and address are American Disposal Services,
Inc. ("ADS"), 5821 Northwest Grand Boulevard, Suite A, Oklahoma City, OK  73118.

          2.   The Employee's name and address are John J. McDonnell, 18404
Marshfield, Homewood, IL  60430.

          3.   The office of the Employee is to be located in the Chicago area,
and the Employee will not be relocated during 1993. If relocation is necessary,
the Employer shall pay relocation expenses including moving and closing costs.
The Employee shall perform the general duties as environmental engineer for
Employer, ADS.

          4.   The term of the Employee's contract is guaranteed for five years
commencing on or about February 8, 1993.

          5.   The salary of the Employee shall be $80,000 per year in year one,
and increasing by 15% each year to and through year five.  This compensation
will be paid in equal semi-monthly payments.

          6.   All options to purchase shares of common stock which are not
exercised shall not terminate or expire until six months after the Employee's
five year anniversary with ADS.

          7.   The Employer shall provide Employee with a company automobile
similar to the size and make of a Ford Explorer.  The Employer shall pay the
operating expenses associated with the vehicle, including but not limited to
gas, insurance, maintenance, repair costs, taxes and other governmental charges.
The Employer shall provide a new replacement automobile to Employee in event of
the following which occurs first:

               a)   The loss of the company automobile via theft, damage, or
                    mechanical breakdown;

               b)   The company vehicle reaching 75,000 miles of travel;


                                       -1-
<PAGE>

               c)   At such time that the Employee has driven the company
                    vehicle for three years.

          8.   The Employee shall be entitled to vacation time per the company
policy or policies which shall be formulated subsequent to the execution of this
contract.  In no event shall Employee be entitled to less than two weeks of
vacation per year, effective immediately.

          9.   The Employee shall be eligible and entitled to participate in any
additional benefits and benefit programs offered to ADS employees per the
company policy or policies which shall be formulated subsequent to the execution
of this contract.

          10.  This Agreement may be amended, terminated, or extended for
additional periods by the parties hereto by agreement in writing.  It contains
the entire agreement of the parties.  It may not be changed orally but only by
an agreement in writing signed by the parties against whom enforcement of any
waiver, change, modification, extension or discharge is sought.

/s/ Ronald H. Burks
- --------------------------------
Ronald H. Burks, President
American Disposal Services, Inc.


Dated: January 26, 1993
      -------------------

/s/John J. McDonnell
- -------------------------
John J. McDonnell


Dated: January 26, 1993
      -------------------


                                       -2-

<PAGE>

                              COUNTY DISPOSAL, INC.
                  C/O CHARTERHOUSE ENVIRONMENTAL CAPITAL GROUP
                         535 MADISON AVENUE - 28TH FLOOR
                            NEW YORK, NEW YORK  10022


May 16, 1995



Mr. Richard T. Kogler
741 Woodlawn Avenue
LaGrange Park, Illinois  60525

Dear Richard:


This letter will serve as our agreement (Agreement) concerning your employment
as a senior executive officer of County Disposal, Inc., (CDI).  The term of this
Agreement shall be for a period of three (3) years beginning on the date you
indicate your acceptance at the foot of this letter ("Initial Period of
Employment") and shall continue on an at-will basis thereafter (collectively the
"Term of Employment").

You agree to spend all of your normal working hours on the business of CDI and
to faithfully and competently perform such duties.

SALARY

CDI agrees to pay or cause to be paid to you for your services hereunder during
the Term of Employment, a salary of $150,000 per year, payable in installments
at least as frequently as monthly and subject to the usual payroll deductions.
CDI's obligation to make these payments during the term of this Agreement shall
be binding upon the successors and assigns of CDI, including a purchaser of all
or substantially all of the assets of CDI.

During the Initial Period of Employment, this Agreement may be terminated by CDI
only as follows:

          1.   Upon your death;

          2.   If you for any reason become unable to carry out all or
               substantially all of your duties and remain so incapacitated for
               a period of six (6) months or more; or

          3.   For cause, which shall be defined as whatever acts or omissions a
               mutually agreeable arbitrator shall determine to be sufficient
               cause for your dismissal.
<PAGE>

Mr. Richard T. Kogler                  -2-                          May 16, 1995


After the Initial Period of Employment, this Agreement may be terminated by
either party with or without cause upon two (2) weeks notice.

CDI may direct that your duties hereunder be performed for and compensation
hereunder be paid by, any affiliate or subsidiary of CDI.  Additionally, CDI may
assign this Agreement in its entirety to any of its subsidiaries or affiliates.
If CDI is consolidated with or merged into, or if all or a part of its assets
are transferred to another corporation carrying on all or a substantial part of
the business of CDI, this Agreement may be assigned to such successor.

STOCK OPTIONS

It is anticipated that you will participate in the following stock options in
the same manner as all other senior executive officers of CDI and will be
treated similarly as all officers in the event of a public offering of CDI's
stock.  You will receive options to purchase .5% of the common stock of CDI (as
of the date of the equity capitalization of CDI) on the same terms as those
contained in the options that are being granted to the other members of
operating management contemporaneously herewith.  You will also receive options
to purchase .25% of the common stock of American Disposal Services, Inc., which,
as of the date of this letter, equates to 59,116 shares of common stock, at a
price of $.71 per share.

HEALTH INSURANCE, LIFE INSURANCE AND OTHER BENEFITS PROVIDED BY CDI

You and your family will be entitled to participate in the Company's health,
disability and life insurance programs during the term of this Agreement.  In
addition, you shall be entitled to participate in any 401(k), bonus, profit-
sharing, defined benefit pension and any other additional compensation plans
that CDI may now, or during the term of this Agreement, offer to other senior
executive officers.

COMPANY AUTOMOBILE

You will be provided a Company automobile and CDI will pay the insurance and all
other operating expenses associated with that vehicle.

INDEMNIFICATION

CDI's Certificate of Incorporation will provide for the indemnification of CDI's
officers to the fullest extent permitted by Delaware law.
<PAGE>

Mr. Richard T. Kogler                  -3-                          May 16, 1995


The Agreement supersedes all prior written or oral discussions between CDI
and/or American Disposal Services, Inc. and you.  If all of the elements of this
letter conform with your understanding, please acknowledge in the space provided
below and return a copy of the letter to me.

Best regards.

Very truly yours,

COUNTY DISPOSAL, INC.



By:  /s/ David C. Stoller
     ---------------------------
     David C. Stoller, Chairman
     and Chief Executive Officer




I Richard T. Kogler, hereby accept such employment upon the terms and conditions
as set forth above.


     /s/ Richard T. Kogler              Date:   5/16/95
     --------------------------------          ----------------------------
     Richard T. Kogler



<PAGE>


                              COUNTY DISPOSAL, INC.
                  C/O CHARTERHOUSE ENVIRONMENTAL CAPITAL GROUP
                         535 MADISON AVENUE - 28TH FLOOR
                               NEW YORK, NY  10022


June 2, 1995


Ms. Ann L. Straw
547 N. Linden
Oak Park, Illinois  60302

Dear Ann:

          In consideration of your agreement to leave your previous employment
and make available to County Disposal, Inc. ("CDI") your executive services on a
full-time basis, CDI enters into this Agreement concerning your employment as
Vice President and General Counsel (collectively, an "Officer") of CDI.

          You agree to spend all of your normal working hours on the business of
CDI.

COMPENSATION

          As set forth in the paragraph captioned "Term" below, the initial term
of this Agreement shall be three years.  For the consideration recited above,
CDI shall pay you as compensation over the initial term an aggregate of $405,000
payable in equal periodic installments at least twice monthly.  Upon a
termination of this Agreement during the initial term, other than (i) pursuant
to the paragraph captioned "Termination" below, or (ii) by you, CDI will be
obligated to continue making periodic installment payments of the unpaid balance
of your compensation.  Notwithstanding the foregoing, you shall have the
obligation to "mitigate" and CDI's obligation to pay the unpaid balance shall be
reduced by such mitigation.

STOCK OPTIONS

          You will receive options to purchase .33% of the common stock of CDI
(based on the equity capitalization necessary to fund CDI's acquisition of the
Envirite Facilities) on the same terms as those contained in the options being
granted to the President of CDI contemporaneously herewith.  You will also
receive options (in the form annexed hereto as Exhibit A) to purchase 39,016
shares of common stock of American Disposal Services, Inc. ("ADS") at a price of
$.71 per share (which represents the right to purchase .165% of the Common Stock
of ADS).  You shall have rights comparable to those of the Presidents of CDI and
ADS in the event of a public offering or
<PAGE>

Ann L. Straw, Esq.
June 2, 1995
Page 2


private sale of CDI's and ADS' stock or a sale of all of or substantially all of
the assets of either CDI or ADS.

INSURANCE AND OTHER BENEFITS

          You and your family will be entitled to participate in CDI's insurance
programs.  You shall receive all other benefits generally available to CDI's
executives, including without limitation the opportunity to participate in any
group health, life and disability insurance plans, in any profit sharing,
401(k), retirement income, pension and bonus and other compensation plans and in
the annual vacation program.

TERM

          The initial term of this Agreement shall be a period beginning on June
19, 1995, and ending on the third anniversary thereof.  Subject to the
termination provisions set forth below, your employment shall thereafter
continue for successive one year terms governed by the provisions hereof.  After
the initial term, this Agreement may be terminated by either you or CDI at any
time upon one month's written notice.  Before and during the initial term, you
may terminate this Agreement after one month's written notice.

TERMINATION

          Notwithstanding anything herein to the contrary, CDI may terminate
this Agreement at any time upon your death or for "Cause" after one month's
written notice setting forth any alleged "Cause".  "Cause" shall be defined as
your willful material breach of your obligations of this Agreement,
determination of which shall be made by a mutually agreeable arbitrator.

MALPRACTICE INSURANCE

          During the term of your employment, CDI will obtain and maintain in
force malpractice insurance covering you and all other lawyers employed in CDI's
law department in an amount and of a type to be mutually agreed to.

INDEMNIFICATION

          CDI's Certificate of Incorporation provides for the indemnification of
CDI's officers to the fullest extent permitted by Delaware law.  To the fullest
extent permitted by law, CDI hereby indemnifies you and agrees to defend you
against, and release you and hold you harmless from all liabilities, losses,

<PAGE>

Ann L. Straw, Esq.
June 2, 1995
Page 3


claims, damages and expenses (the "Indemnified Liabilities") which arise out of
or in any way relate to your being or having been an Officer or employee of CDI
or ADS, including Indemnified Liabilities incurred in connection with the
defense or disposition of any action, suit or other proceeding with which you
may be involved or be threatened.  These indemnification provisions shall
survive the termination of this Agreement.  Indemnified Liabilities include
without limitation all Indemnified Liabilities in connection with the document
entitled "Agreement" dated January 6, 1986 between you and Waste Management,
Inc.  CDI shall not assert such document as a defense to any of its obligations
hereunder.  Indemnified Liabilities, however, shall not include any liabilities
caused by your own gross negligence or willful misconduct, as defined by
Delaware law.

MISCELLANEOUS

          In the event of a bankruptcy filing with respect to CDI or
commencement of any insolvency proceeding with respect to CDI, CDI shall pay you
in a lump sum within 30 days the full amount of compensation hereunder for the
remaining term hereof.

          CDI represents and warrants that it is a corporation duly organized
under the laws of Delaware and has all requisite corporate power and authority
to enter into this Agreement.

          The terms set forth in this Agreement will supersede all prior written
or oral discussions and communications between you, CDI and ADS, as to the
matters treated herein.  This Agreement may be modified only by a written
instrument executed by CDI and yourself.

          The terms of this Agreement shall be binding upon the successors and
assigns of CDI, including a purchaser of all, or substantially all, of the
assets of CDI.  The laws of Illinois shall govern this Agreement.  Should any
final determination of a court of competent jurisdiction affect any provision
hereof, the

<PAGE>

Ann L. Straw, Esq.
June 2, 1995
Page 4


provision or provisions so affected shall be automatically conformed to such
determination and otherwise this Agreement shall continue in full force and
effect.

          Best regards.


                                   COUNTY DISPOSAL, INC.


                                   By: /s/ David C. Stoller
                                       ------------------------------------


AGREED:


/s/ Ann L. Straw
- ------------------------------
     ANN L. STRAW




<PAGE>

May 3, 1994



Mr. Larry Conrath
13345 Oakwood Drive
Homer Township
Lockport, Illinois  60441

Dear Larry:

This letter should serve as our agreement concerning your employment as
Corporate Controller of American Disposal Services, Inc., (ADS).  The term of
this agreement shall be for a period of five (5) years beginning on the date you
indicate acceptance of this agreement.  You will agree to spend all your normal
working hours on the business of ADS and to faithfully and competently perform
such duties.

SALARY

ADS agrees to pay or cause to be paid to you for your services hereunder during
the term of this agreement a one year salary of $80,000 per year.  This salary
would be guaranteed so long as you are actively employed at ADS, and shall be
binding upon the successors and assigns of ADS, including a purchaser of all or
substantially all of the assets of ADS.  This salary would be paid at least
semi-monthly.  ADS shall be relieved of any further obligation regarding its
salary payment to you if you should voluntarily elect to terminate your
employment with ADS, or if terminated for cause, which shall be defined as
whatever acts or omissions a mutually agreeable arbitrator shall determine to be
sufficient cause for your dismissal.  Future year salaries would escalate from
your salary in effect at the time of review (but not less than $80,000) with
adjustment dependent on your overall performance in the prior year.

STOCK

You will receive options to purchase 75,000 shares of the common stock of ADS.
The exercise price of the options at the date of grant and subsequent to that
date will be $.714286 per share.  Your options would be able to be exercised at
the rate of 20% per year for each completed year of your employment agreement.
<PAGE>

Mr. Larry Conrath                      -2-                           May 3, 1994


HEALTH INSURANCE

You and your family would be entitled to participate in the company's health
insurance and life insurance program.  Coverage will be consistent with the
quality of coverage generally provided to senior executives of Waste Management.

VACATION LEAVE

You will receive three weeks of vacation leave per year.

If all the elements of this letter conform with your understanding, please
acknowledge in the space provided below and return one copy to me.

Sincerely yours,


/s/ Rich De Young
- ------------------
Rich De Young
President


RD:ma



ACCEPTANCE:


/s/ Larry Conrath                Date           5/9/94
- ------------------------------          ---------------------------
Larry Conrath



<PAGE>


INDEMNIFICATION AGREEMENT


          INDEMNIFICATION AGREEMENT, dated as of January 1, 1996, between
AMERICAN DISPOSAL SERVICES, INC., a Delaware corporation ("CORPORATION"), and
[Name] ("DIRECTOR").

          WHEREAS, Director is a director of Corporation and in such capacity is
performing a valuable service for Corporation; and

          WHEREAS, the Certificate of Incorporation and By-Laws of Corporation
(collectively, the "CHARTER") provide for the indemnification of the officers,
directors, agents and employees of Corporation to the maximum extent authorized
by the Delaware General Corporation Law (the "STATE STATUTE"); and

          WHEREAS, such Charter and the State Statute specifically provide that
they are not exclusive, and thereby contemplate that contracts may be entered
into between Corporation and its directors with respect to indemnification of
such directors; and

          WHEREAS, to induce Director to serve as a director of Corporation,
Corporation has determined and agreed to enter into this contract with Director;

          NOW, THEREFORE, in consideration of Director's continued service as a
director of Corporation after the date hereof the parties hereto agree as
follows:

          1.   INDEMNITY OF DIRECTOR.  Corporation shall hold harmless and
indemnify Director to the full extent authorized or permitted by the provisions
of the State Statute, or by any amendment thereof or other statutory provisions
authorizing or permitting such indemnification which is adopted after the date
hereof.  All amounts incurred by Director for which the Corporation is obligated
to indemnify Director shall be paid directly by the Corporation to the obligee
thereof prior to its due date, assuming the Corporation is timely notified of
such obligations.  In the event the Corporation cannot pay the obligation when
due, the Corporation shall notify Director and Director may either obtain an
extension of the obligation or pay the obligation.  In any event, the
Corporation shall reimburse Director for any and all amounts which the
Corporation is obligated to indemnify Director pursuant to this Agreement within
thirty (30) days after Director has paid such amounts and submitted evidence of
such payment to the Corporation.

          2.  ADDITIONAL INDEMNITY.  Subject only to the exclusions set forth in
SECTION 3 hereof, Corporation shall hold harmless and indemnify Director:
<PAGE>

               2.1.  Against any and all expenses (including attorneys' fees),
judgments, fines and amounts paid in settlement actually and reasonably incurred
by Director in connection with any threatened, pending or completed action, suit
or proceeding, whether civil, criminal, administrative or investigative
(including an action by or in the right of the Corporation) to which Director
is, was or at any time becomes a party or is threatened to be made a party, by
reason of the fact that Director is, was or at any time becomes a director,
officer, employee or agent of Corporation, or is or was serving or at any time
serves at the request of Corporation as a director, officer, employee or agent
of another corporation, partnership, joint venture, trust or other enterprise;
and

               2.2.  Otherwise to the fullest extent as may be provided to
Director by Corporation under the non-exclusivity provisions of the Charter and
the State Statute.

Notwithstanding anything contained herein to the contrary, Corporation shall
advance legal fees and expenses as and when incurred by Director in connection
with any matter that is the subject of indemnification under this Agreement.

          3.  LIMITATIONS ON ADDITIONAL INDEMNITY.  No indemnity pursuant to
SECTION 2 hereof shall be paid by Corporation:

               3.1.  In respect of remuneration paid to Director if it shall be
determined by a final judgment or other final adjudication that such
remuneration was in violation of law; or

               3.2.  On account of any suit in which judgment is rendered
against Director for an accounting of profits made from the purchase or sale by
Director of securities of Corporation pursuant to the provisions of Section
16(b) of the Securities Exchange Act of 1934 and amendments thereto or similar
provisions of any federal, state or local statutory law; or

               3.3.  On account of Director's conduct which is finally
judicially determined to have been knowingly fraudulent or deliberately
dishonest or to have constituted willful misconduct; or

               3.4.  If a final decision by a court having jurisdiction in the
matter shall determine that such indemnification is not lawful.

          4.  CONTINUATION OF INDEMNITY.  All agreements and obligations of
Corporation contained herein shall continue during the period Director is a
director, officer, employee or agent of Corporation (or is or was serving at the
request of Corporation as a director, officer, employee or agent of another
corporation, partnership, joint venture, trust or other enterprise) and shall
continue thereafter so long as Director shall be subject to any


                                        2
<PAGE>

possible claim or threatened, pending or completed action, suit or proceeding,
whether civil, criminal or investigative, by reason of the fact that Director
was a director of Corporation or serving in any other capacity referred to
herein.

          5.  NOTIFICATION AND DEFENSE OF CLAIM.  Promptly after receipt by
Director of notice of the commencement of any action, suit or proceeding,
Director shall, if a claim in respect thereof is to be made against Corporation
under this Agreement, notify Corporation of the commencement thereof; but the
omission so to notify Corporation shall not relieve it from any liability which
it may have to Director otherwise than under this Agreement.  With respect to
any such action, suit or proceeding as to which Director notifies Corporation of
the commencement thereof:

               5.1.  Corporation shall be entitled to participate therein at its
own expense; and

               5.2.  Except as otherwise provided below, to the extent that it
may wish, Corporation jointly with any other indemnifying party similarly
notified shall be entitled to assume the defense thereof, with counsel
satisfactory to the Director.  After notice from Corporation to Director of its
election so to assume the defense thereof, Corporation will not be liable to
Director under this Agreement for any legal or other expenses subsequently
incurred by Director in connection with the defense thereof other than
reasonable costs of investigation or as otherwise provided below.  Director
shall have the right to employ its counsel in such action, suit or proceeding
but the fees and expenses of such counsel incurred after notice from Corporation
of its assumption of the defense thereof shall be at the expense of Director
unless (i) the employment of counsel by Director has been authorized by
Corporation, (ii) Director shall have reasonably concluded that there may be a
conflict of interest between Corporation and Director in the conduct of the
defense of such action or (iii) Corporation shall not in fact have employed
counsel to assume the defense of such action, in each of which cases the fees
and expenses of counsel shall be at the expense of Corporation.  Corporation
shall not be entitled to assume the defense of any action, suit or proceeding
brought by or on behalf of Corporation or as to which Director shall have made
the conclusion provided for in (ii) above.

               5.3.  Corporation shall not be liable to indemnify Director under
this Agreement for any amounts paid in settlement of any action or claim
effected without its written consent.  Corporation shall not settle any action
or claim in any manner which would impose any penalty or limitation on Director
without Director's written consent.  Neither Corporation nor Director shall
unreasonably withhold their consent to any proposed settlement.


                                        3
<PAGE>

          6.  REPAYMENT OF EXPENSES.  Director shall reimburse Corporation for
all reasonable expenses paid by Corporation in defending any civil or criminal
action, suit or proceeding against Director in the event and only to the extent
that it shall be finally judicially determined that Director is not entitled to
be indemnified by Corporation for such expenses under the provisions of the
State Statute, the Charter, this Agreement or otherwise.

          7.  ENFORCEMENT.

               7.1.  Corporation expressly confirms and agrees that it has
entered into this Agreement and assumed the obligations imposed on Corporation
hereby in order to induce Director to serve as an officer of Corporation, and
acknowledges that Director is relying upon this Agreement in serving in such
capacity.

               7.2.  In the event Director is required to bring any action to
enforce rights or to collect moneys due under this Agreement and is successful
in such action, Corporation shall reimburse Director for all of Director's
reasonable fees and expenses in bringing and pursuing such action.

          8.  SEPARABILITY.  Each of the provisions of this Agreement is a
separate and distinct agreement and independent of the others, so that if any
provision hereof shall be held to be valid or unenforceable for any reason, such
invalidity or unenforceability shall not affect the validity or enforceability
of the other provisions hereof.

          9.  GOVERNING LAW;  BINDING EFFECT; AMENDMENT AND TERMINATION.

               9.1.  This Agreement shall be interpreted and enforced in
accordance with the laws of the State of Delaware.

               9.2.  This Agreement shall be binding upon Director and upon
Corporation, its successors and assigns, and shall inure to the benefit of
Director, his heirs, personal representatives and assigns and to the benefit of
Corporation, its successors and assigns.

               9.3.  No amendment, modification, termination or cancellation of
this Agreement shall be effective unless in writing signed by both parties
hereto.


                                        4
<PAGE>


               IN WITNESS WHEREOF, the parties hereto have executed this
Agreement as of the date first above written.

                              AMERICAN DISPOSAL SERVICES, INC.


                              By________________________________
                              Title:

                              ___________________________________
                              _____________________, Director


                                        5

<PAGE>


                            INDEMNIFICATION AGREEMENT


          INDEMNIFICATION AGREEMENT, dated as of January 1, 1996, between
AMERICAN DISPOSAL SERVICES, INC., a Delaware corporation ("CORPORATION"), and
[Name] ("OFFICER").

          WHEREAS, Officer is a an officer of Corporation and in such capacity
is performing a valuable service for Corporation; and

          WHEREAS, the Certificate of Incorporation and By-Laws of Corporation
(collectively, the "CHARTER") provide for the indemnification of the officers,
directors, agents and employees of Corporation to the maximum extent authorized
by the Delaware General Corporation Law (the "STATE STATUTE"); and

          WHEREAS, such Charter and the State Statute specifically provide that
they are not exclusive, and thereby contemplate that contracts may be entered
into between Corporation and its officers with respect to indemnification of
such officers; and

          WHEREAS, to induce Officer to serve as an officer of Corporation,
Corporation has determined and agreed to enter into this contract with Officer;

          NOW, THEREFORE, in consideration of Officer's continued service as an
officer of Corporation after the date hereof the parties hereto agree as
follows:

          1.   INDEMNITY OF OFFICER.  Corporation shall hold harmless and
indemnify Officer to the full extent authorized or permitted by the provisions
of the State Statute, or by any amendment thereof or other statutory provisions
authorizing or permitting such indemnification which is adopted after the date
hereof.  All amounts incurred by Officer for which the Corporation is obligated
to indemnify Officer shall be paid directly by the Corporation to the obligee
thereof prior to its due date, assuming the Corporation is timely notified of
such obligations.  In the event the Corporation cannot pay the obligation when
due, the Corporation shall notify Officer and Officer may either obtain an
extension of the obligation or pay the obligation.  In any event, the
Corporation shall reimburse Officer for any and all amounts which the
Corporation is obligated to indemnify Officer pursuant to this Agreement within
thirty (30) days after Officer has paid such amounts and submitted evidence of
such payment to the Corporation.

          2.  ADDITIONAL INDEMNITY.  Subject only to the exclusions set forth in
SECTION 3 hereof, Corporation shall hold harmless and indemnify Officer:
<PAGE>

               2.1.  Against any and all expenses (including attorneys' fees),
judgments, fines and amounts paid in settlement actually and reasonably incurred
by Officer in connection with any threatened, pending or completed action, suit
or proceeding, whether civil, criminal, administrative or investigative
(including an action by or in the right of the Corporation) to which Officer is,
was or at any time becomes a party or is threatened to be made a party, by
reason of the fact that Officer is, was or at any time becomes a director,
officer, employee or agent of Corporation, or is or was serving or at any time
serves at the request of Corporation as a director, officer, employee or agent
of another corporation, partnership, joint venture, trust or other enterprise;
and

               2.2.  Otherwise to the fullest extent as may be provided to
Officer by Corporation under the non-exclusivity provisions of the Charter and
the State Statute.

Notwithstanding anything contained herein to the contrary, Corporation shall
advance legal fees and expenses as and when incurred by Officer in connection
with any matter that is the subject of indemnification under this Agreement.

          3.  LIMITATIONS ON ADDITIONAL INDEMNITY.  No indemnity pursuant to
SECTION 2 hereof shall be paid by Corporation:

               3.1.  In respect of remuneration paid to Officer if it shall be
determined by a final judgment or other final adjudication that such
remuneration was in violation of law; or

               3.2.  On account of any suit in which judgment is rendered
against Officer for an accounting of profits made from the purchase or sale by
Officer of securities of Corporation pursuant to the provisions of Section 16(b)
of the Securities Exchange Act of 1934 and amendments thereto or similar
provisions of any federal, state or local statutory law; or

               3.3.  On account of Officer's conduct which is finally judicially
determined to have been knowingly fraudulent or deliberately dishonest or to
have constituted willful misconduct; or

               3.4.  If a final decision by a court having jurisdiction in the
matter shall determine that such indemnification is not lawful.

          4.  CONTINUATION OF INDEMNITY.  All agreements and obligations of
Corporation contained herein shall continue during the period Officer is a
director, officer, employee or agent of Corporation (or is or was serving at the
request of Corporation as a director, officer, employee or agent of another
corporation, partnership, joint venture, trust or other enterprise) and shall
continue thereafter so long as Officer shall be subject to any


                                        2
<PAGE>

possible claim or threatened, pending or completed action, suit or proceeding,
whether civil, criminal or investigative, by reason of the fact that Officer was
an officer of Corporation or serving in any other capacity referred to herein.

          5.  NOTIFICATION AND DEFENSE OF CLAIM.  Promptly after receipt by
Officer of notice of the commencement of any action, suit or proceeding, Officer
shall, if a claim in respect thereof is to be made against Corporation under
this Agreement, notify Corporation of the commencement thereof; but the omission
so to notify Corporation shall not relieve it from any liability which it may
have to Officer otherwise than under this Agreement.  With respect to any such
action, suit or proceeding as to which Officer notifies Corporation of the
commencement thereof:

               5.1.  Corporation shall be entitled to participate therein at its
own expense; and

               5.2.  Except as otherwise provided below, to the extent that it
may wish, Corporation jointly with any other indemnifying party similarly
notified shall be entitled to assume the defense thereof, with counsel
satisfactory to the Officer.  After notice from Corporation to Officer of its
election so to assume the defense thereof, Corporation will not be liable to
Officer under this Agreement for any legal or other expenses subsequently
incurred by Officer in connection with the defense thereof other than reasonable
costs of investigation or as otherwise provided below.  Officer shall have the
right to employ its counsel in such action, suit or proceeding but the fees and
expenses of such counsel incurred after notice from Corporation of its
assumption of the defense thereof shall be at the expense of Officer unless (i)
the employment of counsel by Officer has been authorized by Corporation, (ii)
Officer shall have reasonably concluded that there may be a conflict of interest
between Corporation and Officer in the conduct of the defense of such action or
(iii) Corporation shall not in fact have employed counsel to assume the defense
of such action, in each of which cases the fees and expenses of counsel shall be
at the expense of Corporation.  Corporation shall not be entitled to assume the
defense of any action, suit or proceeding brought by or on behalf of Corporation
or as to which Officer shall have made the conclusion provided for in (ii)
above.

               5.3.  Corporation shall not be liable to indemnify Officer under
this Agreement for any amounts paid in settlement of any action or claim
effected without its written consent.  Corporation shall not settle any action
or claim in any manner which would impose any penalty or limitation on Officer
without Officer's written consent.  Neither Corporation nor Officer shall
unreasonably withhold their consent to any proposed settlement.

          6.  REPAYMENT OF EXPENSES.  Officer shall reimburse Corporation for
all reasonable expenses paid by Corporation in


                                        3
<PAGE>

defending any civil or criminal action, suit or proceeding against Officer in
the event and only to the extent that it shall be finally judicially determined
that Officer is not entitled to be indemnified by Corporation for such expenses
under the provisions of the State Statute, the Charter, this Agreement or
otherwise.

          7.  ENFORCEMENT.

               7.1.  Corporation expressly confirms and agrees that it has
entered into this Agreement and assumed the obligations imposed on Corporation
hereby in order to induce Officer to serve as an officer of Corporation, and
acknowledges that Officer is relying upon this Agreement in serving in such
capacity.

               7.2.  In the event Officer is required to bring any action to
enforce rights or to collect moneys due under this Agreement and is successful
in such action, Corporation shall reimburse Officer for all of Officer's
reasonable fees and expenses in bringing and pursuing such action.

          8.  SEPARABILITY.  Each of the provisions of this Agreement is a
separate and distinct agreement and independent of the others, so that if any
provision hereof shall be held to be valid or unenforceable for any reason, such
invalidity or unenforceability shall not affect the validity or enforceability
of the other provisions hereof.

          9.  GOVERNING LAW;  BINDING EFFECT; AMENDMENT AND TERMINATION.

               9.1.  This Agreement shall be interpreted and enforced in
accordance with the laws of the State of Delaware.

               9.2.  This Agreement shall be binding upon Officer and upon
Corporation, its successors and assigns, and shall inure to the benefit of
Officer, his heirs, personal representatives and assigns and to the benefit of
Corporation, its successors and assigns.

               9.3.  No amendment, modification, termination or cancellation of
this Agreement shall be effective unless in writing signed by both parties
hereto.


                                        4
<PAGE>


               IN WITNESS WHEREOF, the parties hereto have executed this
Agreement as of the date first above written.

                              AMERICAN DISPOSAL SERVICES, INC.


                              By________________________________
                              Title:

                              ___________________________________
                              ________________, Officer


                                        5


<PAGE>

                        American Disposal Services, Inc.

                              As of January 1, 1996

Mr./Ms. _____________

Dear _______:

          We refer to the Nonqualified Stock Option Agreement (the "OPTION
AGREEMENT"), dated as of January 1, 1996, between American Disposal Services,
Inc., a Delaware corporation (the "COMPANY"), and you.

          With respect to each year in which you exercise stock options granted
pursuant to the Option Agreement ("OPTIONS"), the Company will pay to you,
within ten days after it files its federal income return with respect to such
year, an amount equal to the lesser of (i) your Additional Tax (as hereinafter
defined) on the exercise of the Options for such year and (ii) your
Proportionate Share (as hereinafter defined) of the Tax Savings (as hereinafter
defined) for such year, if any.  You will not be entitled to additional payments
and the Company will not be entitled to any refund under this letter if there is
a change in the amount of the Tax Savings as a result of events occurring in
subsequent years.

          For purposes of this letter, the following terms shall have the
meanings set forth below:

          "ADDITIONAL TAX" means an amount equal to the difference between (i)
the federal income tax actually paid by you as a result of your exercise of your
Options and (ii) the federal income tax that would have actually been paid by
you as a result of your exercise of your Options had such exercise been taxed at
capital gains rates.

          "OPERATING MANAGEMENT OPTIONEES" means Richard De Young, John
McDonnell, Richard Kogler, Lawrence Conrath and Ann Straw.

          "OTHER OPTIONS" means options granted to Operating Management
Optionees and other Stollerco Optionees pursuant to Nonqualified Option
Agreements dated as of January 1, 1996.

          "PROPORTIONATE SHARE" means, with respect to any year, the ratio of
(x) the total number of Options exercised by you during such year to (y) the sum
of (i) the total number of Options exercised by you during such year and (ii)
the total number of Other Options exercised by the Operating Management
Optionees and Stollerco Optionees during such year.

          "STOLLERCO OPTIONEES" means Scott H. Flamm and Michael S. Pfeffer.
<PAGE>

          "TAX SAVINGS" means, with respect to any year, the amount of federal
income taxes, if any, actually saved by the Company as a result of deductions
attributable to the exercise of Options and Other Options in that year, assuming
that the Company first utilizes all of the following to the extent then
available to it: (i) losses, (ii) deductions other than those described above
and (iii) credits.

          If you are in agreement with the foregoing, please so indicate by
signing in the space provided below.

                              Very truly yours,

                              AMERICAN DISPOSAL SERVICES, INC.


                              By:______________________
                              Title:

Agreed to and accepted
as of the date first above written:


____________________


                                        2

<PAGE>

                                             Exhibit 23.1

                     Consent of Independent Auditors


We consent to the reference to our firm under the caption "Experts" and to 
the use of our report dated March 22, 1996, except Note 10, as to which the 
date is May 30, 1996, included in the Registration Statement on Form S-1 and 
the related Prospectus of American Disposal Services, Inc. for the 
registration of up to 3,162,500 shares of its common stock.


                                     ERNST & YOUNG LLP

Chicago, Illinois
May 31, 1996


<PAGE>

                                             Exhibit 23.2



                     Consent of Independent Auditors


We consent to the reference to our firm under the caption "Experts" and to 
the use of our reports dated November 8, 1995 and February 9, 1996,
with respect to the financial statements of the MSG Facilities of Envirite
Corporation, included in the Registration Statement on Form S-1 and the
related Prospectus of American Disposal Services, Inc. for the registration
of up to 3,162,500 shares of its commonn stock.


                                     ERNST & YOUNG LLP


Philadelphia, Pennsylvania
May 31, 1996


<PAGE>


                                                                   Exhibit 23.3





                  CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS



As independent public accountants, we hereby consent to the use of our report 
and to all references to our Firm included in this registration statement.



                                       ARTHUR ANDERSEN LLP



Oklahoma City, Oklahoma
May 30, 1996





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