STERICYCLE INC
424B3, 1999-12-21
HAZARDOUS WASTE MANAGEMENT
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                                                Filed pursuant to Rule 424(b)(3)
                                            Registration Statement No. 333-91831
PROSPECTUS
[LOGO OF STERICYCLE, INC.]

                                  $125,000,000
                                OFFER TO EXCHANGE

       ALL OUTSTANDING 12 3/8% SERIES A SENIOR SUBORDINATED NOTES DUE 2009
             FOR 12 3/8% SERIES B SENIOR SUBORDINATED NOTES DUE 2009
                                       OF
                                STERICYCLE, INC.

                  This Exchange Offer will Expire at 5:00 P.M.,
                 New York City Time, on Friday, January 21, 2000

================================================================================
Material Terms of the Exchange Offer:

o    This  exchange  offer is not subject to any  condition  other  than that it
     must not violate  applicable  law or any applicable  interpretation  of the
     staff of the Securities and Exchange Commission.
o    All outstanding  series A notes that are validly  tendered and  not validly
     withdrawn will be exchanged for an equal principal amount of series B notes
     which are registered under the Securities Act of 1933.
o    You may withdraw tendered  outstanding series A notes at any time  prior to
     the expiration of this exchange offer.
o    This exchange of notes will not be a taxable event for U.S. federal  income
     tax purposes.  We will not receive any proceeds from the exchange offer.
o    You may  tender  outstanding  notes  only in  denominations  of $1,000  and
     multiples of $1,000.

The Series B Notes:

o    The  terms of the new series of notes are  substantially  identical  to the
     outstanding notes, except for transfer restrictions and registration rights
     relating to the outstanding notes.
o    There  is no existing  market for the series B notes,  and we do not intend
     to apply for their listing on any securities exchange.

PLEASE  CONSIDER  CAREFULLY  THE  "RISK  FACTORS"  BEGINNING  ON  PAGE 9 OF THIS
PROSPECTUS.

- --------------------------------------------------------------------------------

Neither  the  Securities  and  Exchange  Commission  nor  any  state  securities
commission  has  approved of the notes or  determined  that this  prospectus  is
accurate or complete. Any representation to the contrary is a criminal offense.

- --------------------------------------------------------------------------------


                The date of this prospectus is December 16, 1999.


<PAGE>


                              AVAILABLE INFORMATION

         We are subject to the  informational  requirements of the Exchange Act,
and in accordance  therewith we file reports,  proxy and information  statements
and other  information  with the  Securities  and Exchange  Commission.  You can
inspect  and copy these  reports,  proxy and  information  statements  and other
information at:

         o    the public reference facilities maintained by the SEC at 450 Fifth
              Street, N.W., Washington, DC 20549; and

         o    the regional offices of the SEC located at:

         o    500 West Madison Street, Room 1400 Chicago, Illinois 60606; and

         o    7 World Trade Center, 13th Floor New York, New York 10048.

         You also can obtain copies of these materials from the Public Reference
Section of the SEC at 450 Fifth Street, N.W., Washington, DC 20549 at prescribed
rates.  You can obtain  electronic  filings  made  through the  Electronic  Data
Gathering,   Analysis   and   Retrieval   System   at  the   SEC's   web   site,
http://www.sec.gov.

         In addition, you can inspect material filed by us at the offices of the
Nasdaq Stock Market, Reports Section, at 1735 K Street, Washington,  D.C. 20006,
on which shares of our common stock are traded.


<PAGE>



                                     SUMMARY

         The following is a summary of the more detailed  information  appearing
elsewhere in this prospectus.  You should read this entire prospectus carefully,
including the "Risk Factors" and the financial statements and related notes.

         Unless the context otherwise requires, the statements of operations and
other data provided on a "pro forma combined  basis" assume that for each period
presented the  acquisition  of the medical waste  businesses of  Browning-Ferris
Industries,  Inc. and Allied Waste  Industries,  Inc.  and each  acquisition  we
completed  during  that period was  completed  at the  beginning  of the period.
Balance sheet information provided on a "pro forma combined basis" assumes those
same events occurred at the date of the balance sheet.

                                                THE EXCHANGE OFFER

Securities Offered......................    Up to $125,000,000  principal amount
                                            of   12   3/8%   Series   B   Senior
                                            Subordinated Notes due 2009.

The Exchange Offer......................    We are offering the  series  B notes
                                            in  exchange  for a  like  principal
                                            amount  of our  series A notes.  You
                                            may exchange  series A notes only in
                                            integral multiples of $1,000. We are
                                            issuing   the   series  B  notes  to
                                            satisfy  our  obligations  under the
                                            terms  of  the  registration  rights
                                            agreement  among us, our  subsidiary
                                            guarantors and  Donaldson,  Lufkin &
                                            Jenrette   Securities   Corporation,
                                            Bear,  Stearns & Co.,  Inc.,  Credit
                                            Suisse First Boston  Corporation and
                                            Warburg  Dillon  Read LLC,  who were
                                            the initial purchasers of the series
                                            A notes.

Tenders; Expiration Date;
  Withdrawal............................    This exchange offer will  expire  at
                                            5:00 p.m.,  New York City  time,  on
                                            Friday,  January  21,  2000,  or any
                                            later  date  and time to which it is
                                            extended.   You  may  withdraw  your
                                            tender of series A notes pursuant to
                                            this  exchange  offer  at  any  time
                                            prior  to  its  expiration.  In  the
                                            event  we  terminate  this  exchange
                                            offer and do not accept for exchange
                                            any series A notes, we will promptly
                                            return  tendered  series  A notes to
                                            their holders.

Accrued Interest on the Notes...........    The  series  B   notes   will   bear
                                            interest from and including the date
                                            of  issuance  of the series A notes.
                                            Accordingly, if you receive series B
                                            notes  in  exchange   for  series  A
                                            notes,  you will forego  accrued but
                                            unpaid  interest  on your  exchanged
                                            series A notes for the  period  from
                                            and  including  the date of issuance
                                            of your  series  A notes to the date
                                            of   exchange,   but  you   will  be
                                            entitled  to   interest   under  the
                                            series B notes.

Conditions to the Exchange
  Offer.................................    This exchange offer  is  subject  to
                                            customary conditions,  any or all of
                                            which   may  be  waived  by  us.  We
                                            currently  expect  that  each of the
                                            conditions  will  be  satisfied  and
                                            that no waivers will be necessary.

Procedures for Tendering
  Series A Notes........................    If you wish to tender your  series A
                                            notes in this  exchange  offer,  you
                                            must complete and sign the letter of
                                            transmittal,  in accordance with the
                                            instructions,  and submit the letter
                                            of   transmittal   to  the  exchange
                                            agent.



<PAGE>


Guaranteed Delivery
  Procedures............................    If you wish to tender your  series A
                                            notes  and your  series A notes  are
                                            not  immediately  available  or  you
                                            cannot  deliver  your series A notes
                                            and  letter of  transmittal  and any
                                            other  documents   required  by  the
                                            letter   of   transmittal   to   the
                                            exchange    agent   prior   to   the
                                            expiration of this  exchange  offer,
                                            you must  tender your series A notes
                                            according to the guaranteed delivery
                                            procedures   set   forth   in   "The
                                            Exchange  Offer--Guaranteed Delivery
                                            Procedures."

Acceptance of Series A
  Notes and Delivery of
  Series B Notes........................    We will accept for exchange any  and
                                            all series A notes that are properly
                                            tendered  in  this  exchange   offer
                                            prior to 5:00  P.M.,  New York  City
                                            time, on Friday, January 21, 2000.

Material Federal Income
  Tax Considerations....................    The exchange of series  A  notes for
                                            series B notes will not constitute a
                                            taxable event for federal income tax
                                            purposes.

Rights of Dissenting Holders............    As a holder of series A notes you do
                                            not    have   any    appraisal    or
                                            dissenters'    rights    under   the
                                            Delaware General  Corporation Law in
                                            connection with this exchange offer.

Exchange Agent..........................    State Street Bank and Trust Company.

Use of Proceeds.........................    We will  receive  no  cash  proceeds
                                            from exchanges made pursuant to this
                                            exchange  offer.  We used  the  cash
                                            proceeds from the sale of the series
                                            A notes to fund the  acquisition  of
                                            the  medical  waste   businesses  of
                                            Browning-Ferris Industries, Inc. and
                                            Allied Waste Industries, Inc., which
                                            we    refer    to   as   the    "BFI
                                            acquisition."

CONSEQUENCES OF EXCHANGING SERIES A NOTES PURSUANT TO THE EXCHANGE OFFER

         Based on interpretive letters issued by the staff of the Securities and
Exchange Commission to other parties in unrelated transactions,  we believe that
you may offer, sell or otherwise transfer your series B notes, as long as:

         o    you  are not  our "affiliate" within the meaning of Rule 405 under
              the Securities Act;

         o    you acquired  your series B notes in the  ordinary course of  your
              business; and

         o    you  have no  arrangement  with  any person to  participate  in  a
              distribution of the series B notes.

         If you fail to satisfy any of these  conditions  and you  transfer  any
series B notes without  delivering a proper prospectus or without qualifying for
a registration  exemption,  you may incur liability under the Securities Act. We
will not be  responsible  for, or indemnify  you against,  any liability you may
incur.

         Each  broker-dealer that receives series B notes for its own account in
exchange for series A notes must  acknowledge  that it will deliver a prospectus
in connection with any resale of the series B notes. See "Plan of Distribution."
In  addition,  to  comply  with the  securities  laws of some  jurisdictions,  a
broker-dealer  may not  offer  or sell  series B notes  unless  they  have  been
registered  or qualified  for sale in that  jurisdiction  or an  exemption  from
registration or  qualification  is available and the conditions to the exemption
have been met.


<PAGE>

         We have agreed,  under the registration  rights  agreement,  subject to
specified  limitations,  to  register or qualify the series B notes for offer or
sale under the  securities  or blue sky laws of the  jurisdictions  in which any
holder of series A or series B notes reasonably  requests in writing.  If you do
not exchange  your series A notes for series B notes  pursuant to this  exchange
offer,  your series A notes will continue to be subject to the  restrictions  on
transfer  contained in the legend set forth on your series A notes.  In general,
you may not offer or sell series A notes  unless they are  registered  under the
Securities  Act,  except  pursuant to an exemption from, or in a transaction not
subject to, the Securities Act and applicable  state  securities  laws. See "The
Exchange Offer--Purposes of the Exchange Offer" and "--Resales of Notes."


                                            TERMS OF THE SERIES B NOTES

Issuer..................................    Stericycle, Inc.

Securities Offered......................    $125.0 million  in  principal amount
                                            of   12   3/8%   Series   B   Senior
                                            Subordinated Notes due 2009.

Maturity Date...........................    November 15, 2009.

Interest................................    Annual   rate  --  12 3/8%.  Payment
                                            frequency--in  cash every six months
                                            on  November  15 and May  15.  First
                                            payment--May 15, 2000.

Guarantors..............................    Each of  our  wholly  owned domestic
                                            subsidiaries  will  initially  be  a
                                            guarantor.             Non-guarantor
                                            subsidiaries      accounted      for
                                            approximately  9.9% of our pro forma
                                            combined  revenues  for  the  twelve
                                            months  ended June 30,  1999.  If we
                                            cannot make payments on the series B
                                            notes   when   they  are  due,   the
                                            subsidiary guarantors must make them
                                            instead.

Ranking.................................    The   series   B   notes   and   the
                                            subsidiary   guarantees  are  senior
                                            subordinated debts. They rank behind
                                            all  of  our  and   our   subsidiary
                                            guarantors'   current   and   future
                                            indebtedness   except   indebtedness
                                            that  expressly  provides that it is
                                            not senior to the series B notes and
                                            the subsidiary guarantees.

                                            As of September 30, 1999, the series
                                            B notes would have been subordinated
                                            to,   on   a   pro   forma    basis,
                                            approximately   $235.9   million  of
                                            outstanding  senior  debt and  would
                                            have  ranked  effectively  junior to
                                            $22.5 million of other  liabilities,
                                            including   trade    payables,    of
                                            non-guarantor subsidiaries.

Optional Redemption.....................    We may redeem some  or  all  of  the
                                            series  B notes  at any  time at the
                                            redemption   prices  listed  in  the
                                            section "Description of Notes" under
                                            the heading  "Optional  Redemption."
                                            Before  November  15,  2002,  we may
                                            redeem  up to 35% of  the  series  B
                                            notes with the  proceeds  of certain
                                            offerings   of  our  equity  at  the
                                            prices   listed   in   the   section
                                            "Description  of  Notes"  under  the
                                            heading "Optional Redemption."

Mandatory Offer to
  Repurchase............................    If we   sell   specific   assets  or
                                            experience specific kinds of changes
                                            of   control,   we  must   offer  to
                                            repurchase the series B notes at the
                                            prices   listed   in   the   section
                                            "Description  of  Notes"  under  the
                                            heading "Repurchase at the Option of
                                            Holders."


<PAGE>


Covenants...............................    The indenture covering the  series B
                                            notes contains covenants that, among
                                            other  things,  restrict our ability
                                            and the  ability  of our  restricted
                                            subsidiaries to:

                                            o   borrow money;

                                            o   pay dividends on stock or
                                                purchase stock;

                                            o   make investments;

                                            o   allow the imposition of dividend
                                                restrictions on subsidiaries;

                                            o   use  assets as security in other
                                                transactions;

                                            o   sell  specific  assets  or merge
                                                with or  into  other  companies;
                                                and

                                            o   create specified liens.

                                            For  more  details,  see the section
                                            "Description  of  Notes"  under  the
                                            heading "Certain Covenants."

Absence of a Public Market
  for the Notes.........................    No  active  public  market  for  the
                                            series   B   notes   is    currently
                                            anticipated.  We  currently  do  not
                                            intend to apply for the  listing  of
                                            the series B notes on any securities
                                            exchange,  although  we  expect  the
                                            series  B notes to be  eligible  for
                                            trading  in PORTAL.  Firms  making a
                                            market  in the  series  B notes  may
                                            cease  their  market-making  at  any
                                            time.  Accordingly,  we can  give no
                                            assurance as to the liquidity or the
                                            trading  market  for  the  series  B
                                            notes.




<PAGE>


                                   THE COMPANY

         We are the largest regulated medical waste management  company in North
America,  serving over 235,000 customers.  We operate the only fully integrated,
national medical waste management network and have an estimated 22% share of the
regulated  medical  waste  market in the United  States.  We use this network to
provide the  industry's  broadest  service  offering,  including  medical  waste
collection,  transportation,  treatment,  recycling,  and  disposal to unrelated
parties,  together with related consulting,  training and education services and
products.  Our treatment  technologies include our proprietary,  environmentally
friendly  and  efficient   electro-thermal   deactivation  system,  as  well  as
traditional  methods  such  as  autoclaving  and  incineration.  On a pro  forma
combined  basis,  for the year ended  December  31, 1998 and for the nine months
ended  September  30, 1999, we generated  revenues of $290.3  million and $229.4
million, respectively.

         On November  12,  1999,  we completed  the BFI  acquisition  whereby we
purchased from Allied Waste  Industries,  Inc. the medical waste business of BFI
and the  medical  waste  operations  of  Allied.  The  purchase  price for these
operations was $410.5 million in cash, subject to post-closing adjustment.

         An independent  study estimated the size of the regulated medical waste
market in the United States in 1999 to be approximately $1.4 billion. We believe
the worldwide market for regulated medical waste services is approximately  $3.0
billion. Including ancillary services such as training, education, product sales
and consulting  services,  we believe the worldwide market is in excess of $10.0
billion.  Industry  sources  estimate  the  current  annual  growth  rate of the
regulated  medical waste industry in the United States to be 7-10%,  driven by a
number of factors, including:

         o    cost  reduction  pressures  in the health care  industry  that are
              expected to increasingly lead hospitals to outsource their medical
              waste management needs;

         o    the continued expansion of small  account  customers,  due to  the
              continued growth of the alternate site health care market;

         o    the  increasing  average  age of  the  United  States  population,
              resulting  in  people  requiring  more  medical  attention,  which
              increases the generation of medical waste;

         o    broader awareness of and  compliance with an  increasingly complex
              environmental and safety regulatory environment; and

         o    increased costs of operating  medical waste  incinerators  and the
              anticipated  closures of a significant number of on-site treatment
              facilities,  thereby  increasing the demand for off-site treatment
              services,  as a result of Clean  Air Act  regulations  adopted  in
              1997.

         Our principal executive offices are located at 28161 North Keith Drive,
Lake Forest, Illinois 60045. Our telephone number is (847) 367-5910.



<PAGE>


                           PRICE RANGE OF COMMON STOCK

         The  following  table shows for the periods  indicated the high and low
closing sales prices of our common stock as reported on the Nasdaq Stock Market.

           Fiscal Year Ended                                High        Low
           -----------------                                ----        ---

           December 31, 1997
               First Quarter............................    $11.125      $8
               Second Quarter...........................      9.25        7.25
               Third Quarter............................     10.25        7.625
               Fourth Quarter...........................     14.625       9.125
           December 31, 1998
               First Quarter............................     16.50       12.25
               Second Quarter...........................     17.25       11.125
               Third Quarter............................     19.75       13.50
               Fourth Quarter...........................     21          13.625
           December 31, 1999
               First Quarter............................     17.9375     11.75
               Second Quarter...........................     15.0625      9.875
               Third Quarter............................     16.0625     12.375
               Fourth Quarter through December 13 ......     19.125      14.9375

         Our common  stock is traded on the Nasdaq Stock Market under the symbol
"SRCL." On December 13, 1999, the closing price for our common stock was $17 3/8
per share, and there were  approximately 14.7 million shares of our common stock
outstanding,  resulting  in a  market  capitalization  of  approximately  $  255
million.

                                  RISK FACTORS

         See the  section  entitled  "Risk  Factors"  beginning  on page 9 for a
discussion of factors you should consider carefully before deciding to invest in
the series B notes.



<PAGE>


                   SUMMARY UNAUDITED PRO FORMA FINANCIAL DATA

         Below are summary unaudited pro forma financial data for Stericycle and
the BFI medical waste business presented on a combined basis. The information in
the  following  table is  qualified  by  reference  to,  and  should  be read in
conjunction with the sections  "Unaudited Pro Forma Condensed Combined Financial
Statements  of  Stericycle  and  the  BFI  Medical  Waste  Business,"  "Selected
Consolidated Financial and Other Data," "Management's Discussion and Analysis of
Financial  Condition and Results of Operations"  and  Stericycle's  consolidated
financial  statements  and the  financial  statements  of the BFI medical  waste
business and, in each case,  the related notes  thereto,  included  elsewhere in
this prospectus.

         The summary  unaudited  pro forma  financial  data set forth below have
been derived from the unaudited pro forma  financial data included  elsewhere in
this prospectus and give effect to the following:

         (i)      the BFI acquisition;

         (ii)     the offering of the series A notes;

         (iii) $225 million of borrowings under our credit facility with various
         financial institutions, DLJ Capital Funding, Inc., as syndication agent
         for the  financial  institutions,  lead  arranger and sole book running
         manager,  Bank  of  America,  N.A.,  as  administrative  agent  for the
         financial  institutions,  and Bankers Trust Company,  as  documentation
         agent  for  the  financial  institutions  (See  "Description  of  Other
         Indebtedness -- Credit Facility");

         (iv) $75.0  million of gross  proceeds  from the sale by us on November
         12,  1999  of our  convertible  preferred  stock  to  investment  funds
         associated with Bain Capital,  Inc. and with Madison Dearborn Partners,
         Inc., which represents  approximately  22.6% of our outstanding  common
         stock on an as-if converted basis (See "Description of Capital Stock --
         Convertible Preferred Stock");

         (v)      the application  of the net proceeds received from (ii), (iii)
         and (iv) above; and

         (vi) the costs and expenses associated with (i)-(iv) above.

         The unaudited pro forma  statements of operations  data, other data and
related  ratio  information,  give effect to these  transactions  as if each had
occurred as of the  beginning of the period  presented and the pro forma balance
sheet  data  give  effect  to  these  transactions  as if each had  occurred  on
September 30, 1999. The unaudited pro forma  statements of operations  data also
include our  acquisition  of Waste  Systems,  Inc.,  the  majority  owner of 3CI
Complete Compliance  Corporation,  which closed in October 1998, the acquisition
of Med-Tech  Environmental  Limited and related  transactions,  which  closed in
December 1998, and the acquisition of Medical Disposal Services, which closed in
April 1999, as if each had occurred as of the beginning of the period presented.
The  unaudited  pro forma  financial  data do not purport to represent  what our
financial position and results of operations would have been if the transactions
listed above and the other  acquisitions  had actually  occurred as of the dates
indicated and are not intended to project our  financial  position or results of
operations for any future period.



<PAGE>


<TABLE>

THE COMBINED COMPANIES--UNAUDITED PRO FORMA DATA

<CAPTION>

                                                                                                          NINE MONTHS
                                                                                   YEAR ENDED                ENDED
                                                                                  DECEMBER 31,           SEPTEMBER 30,
                                                                                     1998(1)                1999(2)
                                                                                     -------                -------
                                                                                     (IN THOUSANDS, EXCEPT RATIOS)
<S>                                                                               <C>                   <C>
STATEMENTS OF OPERATIONS DATA:
Revenues.....................................................................     $   290,275           $    229,438
Cost of revenues.............................................................         190,355                146,124
                                                                                  -----------           ------------
Gross profit.................................................................          99,920                 83,314
Selling, general and administrative
  expenses...................................................................          40,719                 30,454
Special charges..............................................................             435                    189
                                                                                  -----------           ------------
Operating income.............................................................          58,766                 52,671
Net income applicable to common
  shareholders...............................................................          11,740                 15,147
OTHER DATA:
Ratio of earnings to fixed charges(3)........................................            1.5x                     1.8x

                                                                                         AS OF SEPTEMBER 30, 1999
                                                                                         ------------------------
                                                                                      ACTUAL               PRO FORMA
                                                                                      ------               ---------
                                                                                              (IN THOUSANDS)

BALANCE SHEET DATA:
Cash and cash equivalents....................................................     $    16,017           $     12,348
Working capital..............................................................          28,192                 18,679
Total assets.................................................................         128,728                555,434
Long-term debt, including current portion....................................           5,778                360,910
Convertible Preferred Stock..................................................              --                 70,275
Common shareholders' equity..................................................         111,812                110,012

(1)       The BFI medical waste  business  component of the combined  companies'
          statement of operations is for the year ended September 30, 1998.

(2)       The BFI medical waste  business  component of the combined  companies'
          statement of operations is for the nine months ended June 30, 1999.

(3)       The  ratio of  earnings  to fixed  charges  is  computed  by  dividing
          earnings by fixed charges.  For this purpose,  "earnings"  include pro
          forma income  (loss)  before income taxes and fixed charges and "fixed
          charges" include pro forma interest expense,  amortization of deferred
          financing  fees and  costs,  and a  portion  of rent  expense  that is
          representative of the interest factor in these rentals.


</TABLE>

<PAGE>


                                  RISK FACTORS

         Before you invest in the series B notes, you should consider  carefully
the following  factors,  in addition to the other information  contained in this
prospectus.

SUBSTANTIAL LEVERAGE--OUR SUBSTANTIAL INDEBTEDNESS MAY HAVE A NEGATIVE IMPACT ON
OUR BUSINESS AND FINANCIAL CONDITION, WHICH COULD PREVENT US FROM FULFILLING OUR
OBLIGATIONS UNDER THE NOTES.

         We have now and,  after this  exchange  offer,  will continue to have a
substantial   amount  of   indebtedness.   This  leverage   could  have  adverse
consequences both for us and for you. It could, for example:

         o    make it more difficult for us to satisfy our obligations under the
              notes and our other financial obligations;

         o    make us more vulnerable to unfavorable economic conditions;

         o    make  it  more difficult for us to pursue the  purchase  of  other
              medical waste management businesses;

         o    limit  our  ability  to obtain  necessary  financing  for  working
              capital, for the purchase of machinery,  equipment and other major
              assets, and for other general corporate requirements;

         o    require us to dedicate or reserve a large portion of our cash flow
              from  operations  to  payments  on our  indebtedness,  which would
              prevent us from using it for other purposes;

         o    limit  our  ability  to  plan  for  and  react  to  changes in our
              business; and

         o    place  us at a  competitive  disadvantage  compared to competitors
              that have less debt.

         Assuming that we had completed the offering of the series A notes,  the
BFI  acquisition,  the  issuance  of our  convertible  preferred  stock  and the
borrowing of funds for the BFI acquisition under our credit agreement at January
1, 1998 our pro forma  ratio of  earning  to fixed  charges  for the year  ended
December 31, 1998 would have been 1.5x.

ADDITIONAL BORROWINGS AVAILABLE--DESPITE CURRENT INDEBTEDNESS LEVELS, WE AND OUR
SUBSIDIARIES  MAY STILL BE ABLE TO INCUR  SUBSTANTIALLY  MORE DEBT THAT WOULD BE
SENIOR TO THE SERIES B NOTES, WHICH COULD EXACERBATE THE RISKS DESCRIBED ABOVE.

         The terms of the indenture do not fully prohibit us or our subsidiaries
from incurring  substantial  additional  indebtedness in the future.  Our credit
facility permits additional  borrowings of up to $50 million, all of which would
be senior to the notes and the  subsidiary  guarantees.  If new debt is added to
our and our  subsidiaries'  current debt levels,  the related  risks that we and
they now face could  intensify.  See  "Capitalization,"  "Selected  Consolidated
Financial  and  Other  Data"  and  "Description  of  Other  Indebtedness--Credit
Facility."

COVENANT  RESTRICTIONS--COVENANT  RESTRICTIONS  IN OUR CREDIT  FACILITY  AND THE
INDENTURE MAY LIMIT OUR ABILITY TO OPERATE OUR BUSINESS.

         Our credit facility and the indenture  contain  covenants that restrict
our  ability  to make  distributions  or other  payments  to our  investors  and
creditors  unless certain  financial  tests or other criteria are satisfied.  We
must also comply with financial ratios and tests. In some cases our subsidiaries
are subject to similar  restrictions  which may restrict  their  ability to make
distributions  to us. If we do not  comply  with  these or other  covenants  and
restrictions contained in our credit facility or the indenture, we could default
under those agreements and the debt, together with accrued interest,  could then
be  declared  immediately  due and  payable.  Our  ability to comply  with these
provisions  of our credit  facility and the indenture may be affected by changes
in economic or business conditions or other events beyond our control.


<PAGE>


         Our  credit  facility  contains  additional  affirmative  and  negative
covenants,  which could  affect our ability to operate our  business,  including
limitations  on our  ability  to  incur  additional  indebtedness  and  to  make
acquisitions  and capital  expenditures.  The  indenture  for the series B notes
restricts,  among other  things,  our  ability to incur  additional  debt,  sell
assets, create liens or other encumbrances,  make certain payments and dividends
or merge or  consolidate,  all of which could  affect our ability to operate our
business  and may limit our  ability to take  advantage  of  potential  business
opportunities  as they  arise.  A failure  to comply  with these  covenants  and
restrictions  could  result  in an event of  default  under  either  our  credit
facility  or the  indenture  which could lead to an  acceleration  of debt under
other debt  instruments  that may contain  cross-acceleration  or  cross-default
provisions.

SUBORDINATION--YOUR  RIGHT TO  RECEIVE  PAYMENTS  ON THE  SERIES B NOTES WILL BE
JUNIOR TO OUR CREDIT FACILITY AND POSSIBLY ALL OF OUR FUTURE BORROWINGS.

         The series B notes and the subsidiary  guarantees rank junior to all of
our and our  subsidiary  guarantors'  existing  indebtedness  and all of our and
their future borrowings,  except any future indebtedness that expressly provides
that it ranks equal with, or is  subordinated  in right of payment to, the notes
and the subsidiary guarantees. In addition, a substantial portion of our and our
subsidiary  guarantors' existing indebtedness is secured by substantially all of
our and their assets. As a result, upon any distribution to our creditors or the
creditors  of  the   subsidiary   guarantors  in  a   bankruptcy,   liquidation,
reorganization or similar proceeding relating to us or the subsidiary guarantors
or our or their property,  the holders of our senior debt and of the senior debt
of our subsidiary  guarantors will be entitled to be paid in full in cash before
any payment may be made on the notes or the subsidiary guarantees.  In addition,
all payments on the series B notes and the subsidiary guarantees will be blocked
if we default on the payment of our senior debt and may be blocked for up to 179
of 360 consecutive  days if a non-payment  default occurs on our senior debt. If
we had completed  this exchange on September 30, 1999,  the series B notes would
have been junior or effectively  junior to  approximately  $258.4 million of our
and  our  subsidiary  guarantors'  senior  indebtedness  and  other  liabilities
(including trade payables) of our non-guarantor subsidiaries.

         In the event of a bankruptcy,  liquidation,  reorganization  or similar
proceeding relating to us or our subsidiary guarantors,  holders of the series B
notes will participate  with all other holders of our subordinated  indebtedness
and that of the subsidiary  guarantors in the assets  remaining after we and the
subsidiary guarantors have paid all of our and their senior debt,  respectively.
However,  because the  indenture  requires  that  amounts  otherwise  payable to
holders of the series B notes in a bankruptcy  or similar  proceeding be paid to
holders of senior debt instead,  holders of the notes may receive less, ratably,
than holders of trade payables in any proceeding.  In any of these cases, we and
our  subsidiary  guarantors  may not  have  sufficient  funds  to pay all of our
creditors  and the  holders of the notes may  receive  less,  ratably,  than the
holders of senior debt.

ABILITY TO SERVICE DEBT--WE WILL REQUIRE A SIGNIFICANT AMOUNT OF CASH TO SERVICE
OUR INDEBTEDNESS, INCLUDING THE SERIES B NOTES, AND OUR ABILITY TO GENERATE CASH
DEPENDS ON MANY FACTORS, SOME OF WHICH ARE BEYOND OUR CONTROL.

         Our ability to make payments on our indebtedness,  including the series
B notes, as well as to fund our operations and future growth, will depend on our
ability to generate  cash. Our success in doing so will depend on the results of
our operations,  which in turn depend on many factors, including those described
in this "Risk Factors" section and elsewhere in this prospectus.  Our ability to
generate  adequate  cash  is  also  subject  to  general  economic,   financial,
competitive, legislative, regulatory and other factors beyond our control.

         Based on our current level of operations and  anticipated  cost savings
and  operating  improvements,  we  believe  that our cash flow from  operations,
available  cash and  available  borrowings  under our  credit  facility  will be
sufficient to meet our future liquidity needs, including potential acquisitions.

         We  cannot  assure  you,  however,  that  our  business  will  generate
sufficient cash flow from  operations,  that currently  anticipated cost savings
and  operating  improvements  will  be  realized  on  schedule  or  that  future
borrowings  will be  available  to us under  our  credit  facility  in an amount
sufficient to enable us to pay our  indebtedness,  including  these notes, or to
fund our other liquidity needs. We may need to refinance all or a portion of our
indebtedness,  including the series B notes,  on or before  maturity.  We cannot
assure you that we will be able to


<PAGE>

refinance any of our indebtedness,  including our credit facility and the series
B notes, on commercially reasonable terms or at all.

SECURED INDEBTEDNESS--OUR ASSETS ARE ENCUMBERED TO SECURE OUR CREDIT FACILITY.

         The  series  B notes  will not be  secured  by any of our  assets.  Our
obligations under our credit facility,  however, are secured by a first priority
pledge of and  security  interest  in the stock of all our  present  and  future
domestic  subsidiaries,  other  than the  publicly  held  stock of 3CI  Complete
Compliance   Corporation  and  other   subsidiaries   which  are  designated  as
unrestricted subsidiaries, and by a first priority pledge of 65% of the stock of
all our present and future first-tier  foreign  subsidiaries,  and substantially
all of our  assets and the assets of our  domestic  subsidiaries.  If we were to
become  insolvent or  liquidated,  or if payment under our credit  facility were
accelerated, the lenders under the credit facility would be entitled to exercise
the remedies  available to a secured lender under  applicable law.  Accordingly,
all secured lenders would be effectively senior to the holders of series B notes
in right of payment to the extent of the assets securing the  indebtedness  owed
to the secured lenders.

NOT ALL  SUBSIDIARIES  ARE  GUARANTORS--YOUR  RIGHT TO RECEIVE  PAYMENTS  ON THE
SERIES  B  NOTES  COULD  BE  ADVERSELY  AFFECTED  IF ANY  OF  OUR  NON-GUARANTOR
SUBSIDIARIES DECLARE BANKRUPTCY, LIQUIDATE, OR REORGANIZE.

         Some but not all of our subsidiaries will guarantee the series B notes.
In the  event  of a  bankruptcy,  liquidation  or  reorganization  of any of the
non-guarantor  subsidiaries,  holders  of their  indebtedness  and  their  trade
creditors  will generally be entitled to payment of their claims from the assets
of those  subsidiaries  before any assets are made available for distribution to
us.

         Assuming we had  completed  this  exchange on September  30, 1999,  the
series  B  notes  would  have  been  effectively  junior  to  $22.5  million  of
indebtedness  and  other   liabilities   (including  trade  payables)  of  these
non-guarantor subsidiaries. The non-guarantor subsidiaries generated 9.9% of our
pro forma revenues for the twelve-month period ended June 30, 1999 and held 4.9%
of our pro forma combined assets as of September 30, 1999.

BFI ACQUISITION--WE MAY NOT SUCCESSFULLY INTEGRATE THE BFI ACQUISITION.

         The BFI acquisition  greatly increases our size and geographical  scope
of operations. We have completed 42 previous acquisitions,  however, none of our
prior acquisitions were as large as the BFI acquisition.

         The table below sets forth differences  between our business before the
BFI acquisition and our business after the BFI acquisition.

<TABLE>

                                                                                     BEFORE                   AFTER
                                                                                     ------                   -----
                                                                                         (IN THOUSANDS, EXCEPT
                                                                                           STATES AND SITES)

<S>                          <C> <C>                                              <C>                     <C>
Total assets as of September 30, 1999........................................     $  128,728              $  555,434
Annual revenues for year ending December 31, 1998............................     $   66,681              $  290,275(1)
Customers....................................................................             85                     235
Number of states doing business in...........................................             40                      46
Treatment sites..............................................................             11                      35(2)

(1)      Revenues for the BFI medical waste business  included in this total are
         actually revenues for the fiscal year ended September 30, 1998.
(2)      Adjusted  for  three  duplicative  facilities  which  have been or  are
         being  closed.

</TABLE>

         This  increase  in our  size and  geographic  scope  of  operations  is
expected  to  present  our  management  with  new  and  unique  challenges.  Our
management resources may be stretched to the point where our business, financial
condition and results of operations could be adversely affected.


<PAGE>


RISKS OF  ACHIEVEMENT  OF COST  SAVINGS--WE  MAY NOT  ACHIEVE  ANTICIPATED  COST
SAVINGS AND OTHER  BENEFITS  FROM THE BFI  ACQUISITION  AND OUR OTHER RECENT AND
FUTURE ACQUISITIONS.

         Our integration plan for the BFI acquisition  contemplates certain cost
savings,  including the elimination of duplicative personnel and facilities. The
potential  cost  savings  are based on  analyses  completed  by  members  of our
management.  These analyses necessarily involve assumptions as to future events,
including  general  business  and  industry  conditions,  costs to  operate  our
business and competitive  factors,  many of which are beyond our control and may
not   materialize.   While  we  believe  these  analyses  and  their  underlying
assumptions to be reasonable,  they are inherently estimates which are difficult
to predict and are necessarily  speculative in nature. We cannot assure you that
unforeseen  factors  will  not  offset  the  estimated  cost  savings  or  other
components of our integration plan in whole or in part. As a result,  our actual
cost savings may vary considerably,  or be considerably delayed, compared to the
estimates in this prospectus. We also cannot assure you that we will realize any
cost savings or other  benefits  from our recent  acquisitions  other than those
already  realized,  or that we will realize any cost  savings or other  benefits
from other future acquisitions.

RISKS RELATED TO UNAUDITED PRO FORMA FINANCIAL DATA--INVESTORS ARE CAUTIONED NOT
TO PLACE UNDUE  RELIANCE ON THE UNAUDITED  PRO FORMA  FINANCIAL  DATA  PRESENTED
HEREIN.

         The  unaudited  pro  forma  financial  information  set  forth  in this
prospectus is based on a number of assumptions  and estimates  related to, among
other things,  the cost of running the BFI medical waste business.  See "--Risks
of  Achievement  of Cost  Savings."  The  historical  financial  data of the BFI
medical waste business  presented in this prospectus are of limited relevance in
understanding  what our results of operations,  financial position or cash flows
would have been for the  historical  periods  presented had the BFI  acquisition
been  completed at the beginning of those  periods.  In  particular,  the actual
historical  selling,  general and  administrative  expenses  for the BFI medical
waste  business  cannot be  determined  with  precision  from  BFI's  accounting
records. Only that portion of the selling,  general and administrative  expenses
directly  attributable  to the BFI medical  waste  business is  reflected in the
historical  financial  statements and other BFI medical waste business financial
data  included  in this  prospectus.  No portion  of the  selling,  general  and
administrative expenses associated with the employees and operations of BFI that
were employed in multiple  segments of BFI's overall business have been included
in the  historical  results of the BFI medical waste  business.  Our  management
believes that selling,  general and administrative  expenses for the BFI medical
waste business should properly include a portion of these indirect expenses.  We
have  made  supplemental   disclosures  to  the  pro  forma  combined  financial
information  presented in this prospectus to present  information  that includes
our management's  estimate of the indirect selling,  general and  administrative
expenses of the BFI  medical  waste  business.  See Note 5 of Notes to Pro Forma
Condensed  Combined  Statements of Operations.  The actual selling,  general and
administrative  expenses  incurred in the future could be  materially  different
than those  presented  herein  and,  accordingly,  you  should  not place  undue
reliance on the  unaudited  pro forma and adjusted pro forma  combined  selling,
general and administrative expense information presented herein.

ENVIRONMENTAL AND OTHER  LIABILITIES--WE WILL ALWAYS FACE THE RISK OF LIABILITY,
AND INSURANCE MAY NOT ALWAYS BE AVAILABLE OR SUFFICIENT.

         Our industry presents risks of liability under:

         o     statutes and regulations;

         o     contracts; and

         o     tort law.

         If we fail to  comply  with  any  duty  imposed  by laws or  contracts,
liability for environmental  contamination,  personal injury, or property damage
might result. We maintain  pollution  liability and general liability  insurance
which we believe is adequate to protect our business and  employees.  If a claim
is made  against  us for  which we are  uninsured,  or for  which we do not have
enough  insurance,  it could have a  material  adverse  effect on our  business,
financial condition and results of operations.


<PAGE>


         The federal  Comprehensive  Environmental  Response,  Compensation  and
Liability  Act of 1980,  as amended  (CERCLA),  and similar  state laws,  impose
strict  liability on current and former owners and operators of facilities which
have  released  hazardous  substances  into  the  environment,  as  well  as the
businesses that generate and transport the hazardous  substances that come to be
located at those facilities.  Responsible  parties may be liable for substantial
investigation  and  clean-up  costs and damage to the  environment  even if they
operated  their  businesses  properly  and  complied  with  applicable  laws and
regulations. Liability under CERCLA may be joint and several. Accordingly, if we
were found to be a business with  responsibility  related to a particular CERCLA
site--even if we were not the party responsible for the release of the hazardous
substance--we  could be required to pay the entire cost of the investigation and
clean-up,  even though other parties might also be liable.  We might not be able
to identify who the other responsible parties might be, and we might not be able
to compel them to  contribute  to these  expenses or they might be  insolvent or
unable to afford to  contribute.  Our  pollution  liability  insurance  excludes
liabilities under CERCLA.  Thus, if we do incur liability under CERCLA and if we
cannot  identify  other parties  responsible  under the law who we can compel to
contribute to our expenses and who are financially  able to do so, it could have
a material  adverse effect on our business,  financial  condition and results of
operations. See "Business--Potential Liability and Insurance."

         We may also be susceptible  to negative  publicity if we are identified
as the source of potential environmental contamination.  If an accident occurred
with one of our  transportation  trucks,  with the potential  risk of even minor
medical waste  environmental  contamination,  the resulting media coverage could
have a material adverse effect on our business,  financial condition and results
of operations.

GOVERNMENT  REGULATION--WE ARE SUBJECT TO EXTENSIVE GOVERNMENTAL REGULATION WITH
WHICH IT IS FREQUENTLY DIFFICULT, TIME-CONSUMING AND EXPENSIVE TO COMPLY.

         The medical  waste  industry is subject to  extensive  federal,  state,
local and foreign laws and regulations. These regulations pertain to the:

         o    collection,                                   o   documentation,
         o    transportation,                               o   reporting,
         o    packaging,                                    o   treatment, and
         o    labeling,                                     o   disposal
         o    handling,

of regulated  medical  waste.  Our business  requires us to obtain many permits,
authorizations,  approvals,  certificates,  consent  orders,  or other  types of
governmental  permission  from  every  jurisdiction  where we  operate.  In some
states,  we are  required to obtain  governmental  approval of our  pricing.  We
believe that we currently have all the permits that the  applicable  regulations
require and that we are complying in all material  respects with all  applicable
laws and regulations.

         State and local  regulations  change often and new ones are  frequently
enacted.  This could  require  us to obtain new  permits or to change the way we
operate.  It is  possible  that we would  not be able to  obtain  newly-required
permits.  It is also  possible  that the cost of  complying  with new or changed
regulations  could have a material  adverse  effect on our  business,  financial
condition and results of operations. See "Business--Governmental Regulation."

         A permit may be revoked by the  government if we do not comply with the
conditions  of the permit or with the  regulations  pursuant to which the permit
was issued or with any other regulation.  Inspections by regulatory agencies, as
well as complaints  filed or anonymously  sponsored by our competitors or others
alleging that we are not complying with regulations, could result in proceedings
to modify,  suspend or revoke a permit.  If successful,  this type of proceeding
could have a material  adverse effect on our business,  financial  condition and
results of  operations.  Some  permits must be renewed  periodically,  and it is
possible  that a  particular  permit  might not be renewed  or that  unfavorable
conditions  would be placed on its  renewal.  The failure to obtain a renewal or
the imposition of new permit  conditions could have a material adverse effect on
our   business,   financial   condition   and   results   of   operations.   See
"Business--Governmental Regulation."


<PAGE>


         The permits that our business or  operations  require,  especially  the
permits that we need to build and operate treatment and transfer  facilities and
to transport medical waste, are difficult and time-consuming to obtain. They may
also  contain  conditions  or  restrictions  which  limit our ability to operate
efficiently,  and  they  may not be  issued  as  quickly  as we need to  operate
efficiently.  If we cannot  obtain the permits we need when we need them,  or if
they contain unfavorable conditions,  it could have a material adverse effect on
our business, financial condition and results of operations.

         Applications  for operating and  transportation  permits are frequently
opposed by elected officials, local residents, or citizen groups. It is possible
that public  opposition  could force us to delay or  withdraw  applications  and
abandon  our  plans to expand  into or locate  our  operations  at a  particular
location.  Even after a permit is issued,  opponents may initiate administrative
proceedings or litigation to force the applicable regulatory agency to place new
conditions on the permit, or even to revoke it.

         We own a treatment technology called electro-thermal-deactivation (ETD)
that is an alternative to incineration  (burning) and  autoclaving  (pressurized
steam heating) for the treatment of regulated  medical  waste.  ETD has not been
approved in all states for the  treatment  of medical  waste.  We have  received
permits or  legislative  approval  to use ETD in 15 states and we have filed for
permits in other states. We cannot be sure,  however,  that ETD will be approved
in other  jurisdictions  where we might  want to  install  it.  Our ETD  process
involves  grinding medical waste within a containment  room, which may result in
the aerosolization of pathogens. While we believe that our containment and other
safety systems fully protect our employees through multiple protective measures,
equipment  failure or human  error  possibly  could  result in  exposure  of our
employees to pathogens that may be present in medical waste.

         In addition  to ETD, we  currently  employ  incineration,  autoclaving,
chemclaving (steam heating with disinfectant  chemicals) and microwaving for the
treatment of regulated medical waste.  Incineration is subject to more stringent
regulation  than  ETD  and  may  expose  us  to  unfavorable  regulations.   See
"Business--Treatment Technologies" and "--Governmental Regulation."

         If we expand into other countries,  we will be subject to regulation by
foreign  governments.  These  regulations may include  pricing tariffs  (taxes),
controls over the location and operation of facilities,  and permit requirements
similar to, or more stringent  than,  those imposed by federal,  state and local
governments in the United States. See "Business--Governmental Regulation."

ENVIRONMENTAL REGULATION--THE VIGOR OF GOVERNMENTAL ENFORCEMENT OF ENVIRONMENTAL
REGULATIONS HAS AN UNCERTAIN EFFECT ON OUR BUSINESS.

         We  believe  that  the  government's  strict  enforcement  of laws  and
regulations relating to medical waste collection and treatment has been good for
our business.  These laws and regulations increased the demand for our services.
We also  believe  that  laws and  regulations  that  made it more  difficult  or
expensive  to use  technologies  that  compete  with  our ETD  process,  such as
incineration,  have previously given us a competitive advantage.  This advantage
has  diminished,  however,  and is likely to be further  reduced because we have
increased  our use of  autoclaving  and  incineration,  mainly  as a  result  of
purchasing companies,  including the BFI medical waste business,  that use these
processes.  We estimate that during 1998, prior to the BFI acquisition,  we used
incineration  or autoclaving at our own facilities or those of other parties for
approximately  49%  of  the  regulated  medical  waste  that  we  treated.  This
percentage  has  increased as a result of the BFI  acquisition  and is likely to
further  increase  as we  acquire  other  companies  in  the  future  which  use
incineration and autoclaving.
See "Business--Treatment Technologies."

         Changes in governmental regulation of medical waste, such as:

         o    encouraging the use of landfills;

         o    removing obstacles to the use of  incineration and autoclaving; or

         o    reducing  manpower  and   money   used  to  enforce  environmental
              regulations favorable to our operations


<PAGE>


could have a material  adverse effect on our business,  financial  condition and
results of operations.

         We cannot  predict the type or size of the effect  that any  government
action or inaction will have on our business.

GOVERNMENTAL  ENFORCEMENT  PROCEEDINGS--WE MAY BE SUBJECT TO FINES AND PENALTIES
FOR VIOLATIONS OF REGULATIONS.

         From time to time we are subject to governmental proceedings to enforce
regulations.  We have had to pay fines and penalties  and to undertake  remedial
work at our facilities.  We may be subject to similar proceedings in the future.
Government  enforcement actions also may be initiated against us for the purpose
of revoking or modifying  our  permits.  It is possible  that these  proceedings
could have a material  adverse effect on our business,  financial  condition and
results of operations.

         In April 1997, a worker at our Morton,  Washington  treatment  facility
was diagnosed with active tuberculosis. Testing revealed two additional cases of
active  tuberculosis and 15 additional  workers who tested positive for exposure
to tuberculosis.  Officials of the Washington Departments of Health and of Labor
and  Industries  have  concluded  that the  workers  were  probably  exposed  to
tuberculosis  bacteria  from the  medical  waste being  processed  at the Morton
facility. We believe that the actual source of exposure has not been determined.
However, we have complied with the recommendations of all regulatory authorities
to  outfit  the  facility's  workers  with  personal  protective  equipment.  In
addition, we have complied with governmental recommendations to modify equipment
at the Morton facility. We are also taking these actions, as applicable,  at our
other  treatment  facilities.  The safety  measures  being taken  include  those
recommended by the National  Institute for  Occupational  Safety and Health in a
report issued in December 1998.

         While future claims are  possible,  to date we have not been subject to
any court  proceedings  by the  affected  employees  as a result  of the  Morton
incident, which the Washington Department of Labor and Industries has determined
is covered by the state workers' compensation program. Incidents like the one in
Morton could result in adverse publicity and could cause governments to:

         o    require us to adopt additional safety measures;

         o    impose fines or other penalties on us; or

         o    modify  or revoke our permits, or deny our future applications for
              permits.

         These incidents could also lead to lawsuits by the employees  involved.
Costs associated with conducting or settling these proceedings, the amount of an
adverse judgment, or the negative publicity and loss of customers,  could have a
material  adverse  effect on our  business,  financial  condition and results of
operations.   See  "Business--Governmental Regulation"  and  "--Legal and  Other
Proceedings."

ACQUISITIONS--OUR  GROWTH  DEPENDS IN PART ON OUR ACQUIRING  OTHER MEDICAL WASTE
BUSINESSES OR OTHER RELATED SERVICE BUSINESSES, WHICH WE MAY BE UNABLE TO DO.

         Our growth  strategy is based in part on our  ability to acquire  other
medical waste  businesses.  We do not know whether in the future we will be able
to:

         o    identify suitable businesses to buy;

         o    complete the purchase of those businesses on terms  acceptable  to
              us;

         o    improve  the  operations  of  the  businesses  that  we  buy  and
              successfully integrate their operations into our own; or

         o    avoid or overcome any concerns expressed by regulators,  including
              antitrust concerns.


<PAGE>


         We compete with other  potential  buyers for the  acquisition  of other
medical waste companies.  This competition may result in fewer  opportunities to
purchase  companies  that are for sale.  It may also  result in higher  purchase
prices for the businesses that we want to purchase.

         In addition, we also cannot be sure that we will: have enough money; be
able to borrow enough money on reasonable  terms; be able to issue stock or debt
instruments  (like promissory  notes) as consideration  for the purchase;  or be
able to raise enough money by issuing stock or through other  financing  methods
to complete the purchases of the businesses that we want to buy.

          We also do not know whether our growth  strategy  will  continue to be
effective following the BFI acquisition. As a result of the BFI acquisition, our
business is significantly larger, and the BFI acquisition and other acquisitions
may not have  the  desired  benefits  that we have  expected  in the  past.  Our
increased  size as a result of the BFI  acquisition  also  means  that state and
federal government regulators,  such as antitrust regulators,  will be examining
our  acquisitions  more  closely.  They may  object to some  purchases  or place
conditions on them that would limit their benefit to us.

COMPETITION--OUR ABILITY TO GROW MAY BE LIMITED BY COMPETITION.

         The medical waste industry is very competitive. This has required us in
the past to discount our prices,  especially  to large  account  customers,  and
competition  may  require us to discount  our prices in the future.  Substantial
price reductions could have a material adverse effect on our business, financial
condition and results of operations.

         We face  important  competition  from a large  number of  small,  local
competitors. Because companies can enter the collection and transport aspects of
the medical waste industry with very little money or technical  know-how,  there
are a large number of regional  and local  companies  in the  industry.  We face
competition  from  these  businesses  and  that  competition  may  exist in each
location into which we try to expand in the future.  Our competitors  could take
actions  that  would  hurt  our  growth  strategy,   including  the  support  of
regulations  which could delay or prevent us from obtaining or keeping  permits.
They might also give financial support to citizens' groups that oppose our plans
to locate a  treatment  or  transfer  facility  at a  particular  location.  See
"Business--Competition."

Y2K PROBLEMS--COMPUTER  PROBLEMS RELATED TO THE YEAR 2000 COULD ADVERSELY AFFECT
OUR BUSINESS.

         We are highly dependent on our computer software programs and operating
systems in operating our business.  For example,  we use our computers to assist
in the  scheduling  and  routing  of the  trucks  which  pick up waste  from our
customers and deliver it to transfer stations and treatment facilities.  We also
depend on the proper  functioning  of the  computer  systems  of other  parties,
particularly  those parties whose ability to pay us on a timely basis depends on
their computers working correctly.

         The failure of any of these  systems to  correctly  interpret  calendar
year 2000 could cause business  interruptions  or shutdowns,  financial  losses,
regulatory  actions,  harm to our reputation,  and legal  liability,  any one of
which could have a material adverse effect on our business,  financial condition
and results of operations.

         We have established  plans and conducted tests of our critical hardware
and financial and administrative software, which have verified that our internal
systems  are Year 2000  compliant.  We are also  communicating  with  customers,
suppliers,  financial  institutions  and  others  with which we do  business  to
coordinate  Year 2000  conversion.  However,  given the  complexity of Year 2000
issues and the  uncertainty  surrounding the responses of other parties to these
issues,  we cannot assure you that we will be effective in eliminating  all Year
2000 problems  relating to our business.  For more  information on our Year 2000
program,  see "Management's  Discussion and Analysis of Financial  Condition and
Results of Operations--Year 2000 Issues."



<PAGE>


PROPRIETARY  INFORMATION--OUR  ETD  PROCESS  AND OTHER  ASPECTS OF OUR  BUSINESS
DEPEND ON PATENTS AND PROPRIETARY INFORMATION.

         We own nine United States patents relating to the ETD treatment process
and other  aspects  of  processing  medical  waste.  We have  filed or have been
assigned  patent  applications  in several  foreign  countries and have received
patents in five of them.  We also own one United  States patent for our reusable
container, for which we have the registered trademark "Steri-Tub(R)."

         We believe that our patents are important to our prospects for success.
However, we cannot be sure that our patent applications will issue as patents or
that  any  issued  patents  will  give us a  competitive  advantage.  It is also
possible that our patents could be  successfully  challenged or  circumvented by
competitors or other parties. In addition,  we cannot be sure that our treatment
processes do not infringe patents or other proprietary rights of other parties.

         We may need to sue any company that is infringing  our patents,  and we
may need to  defend  against  claims  of patent  infringement  brought  by other
companies.  Any  litigation  could be very costly and demand a great deal of our
management's  time and  attention.  We also could be required to  participate in
proceedings  before the United States  Patent and Trademark  Office to determine
the priority of inventions or the validity of patents,  which also could involve
a  substantial  expense  and  significant  management  time  and  attention.  An
unfavorable judgment or decision in any lawsuit or proceeding could:

         o    result in substantial monetary liability, or

         o    prevent us from continuing to use our waste treatment processes or
              equipment.

         If we are prevented  from using our  processes or  equipment,  we could
attempt to  negotiate a license  from the party  owning the patent,  or we could
attempt to redesign  our  processes  to avoid  infringement.  If we did suffer a
large monetary  liability,  or if we could not negotiate a license on reasonable
terms or redesign our processes to avoid infringement,  it could have a material
adverse effect on our business,  financial  condition and results of operations.
See "Business--Patents and Proprietary Rights."

         In addition to filing for patent protection where  appropriate,  we try
to protect our proprietary information through  confidentiality  agreements with
our employees,  consultants  and other people who must use our  information.  We
cannot  be sure  that  these  agreements  will be  complied  with or that we can
enforce them  effectively.  Our  proprietary  information  could become known to
competitors in other ways, and  competitors  might develop the same  information
themselves. See "Business--Patents and Proprietary Rights."

         We own federal registrations of:

         o   the trademarks "Steri-Fuel(R)," "Steri-Plastic(R)," "Steri-Tub(R),"
              and "Steri-Cement(R);"

         o    the service mark "Stericycle(R);" and

         o    the  service  mark   consisting  of  the  nine  green  disks  that
              Stericycle  uses in association  with its name and services in the
              United States (it appears on the cover of this prospectus).

We cannot be sure that our  trademarks or service marks will not infringe on the
rights of other  parties.  If we had to change any  trademark,  service  mark or
trade name, we might lose the goodwill  associated  with it. A change could also
be very  expensive  and could have a material  adverse  effect on our  business,
financial  condition  and  results of  operations.  See  "Business--Patents  and
Proprietary Rights."

         Our competitors and others are  continuously  trying to develop new and
better medical waste treatment and disposal technologies. These technologies may
operate more  cheaply,  handle more waste,  produce fewer waste  by-products  or
pollutants,  or have other  advantages  over our processes.  If our  competitors
successfully  introduce these technologies,  we could be placed at a competitive
disadvantage.  New  treatment  and disposal  technologies  could also render our
processes obsolete. It might not be possible to replace or improve our equipment
and processes to compete  effectively with new  technologies,  and even if it is
possible it could be extremely expensive.


<PAGE>


KEY MANAGEMENT--WE DEPEND HEAVILY ON OUR SENIOR EXECUTIVES.

         We depend on a small number of senior  executives.  Our future  success
will depend upon,  among other things,  our ability to keep these executives and
to hire other highly  qualified  employees at all levels.  We compete with other
potential  employers for  employees,  and we may not be successful in hiring and
keeping the executives and other  employees that we need. We do not have written
employment  agreements  with our President and Chief  Executive  Officer and our
four  other  most  highly  compensated  officers,  and  officers  and  other key
employees may leave us with little or no prior notice, either individually or as
part of a group.  Our loss of or  inability to hire key  employees  could have a
material  adverse  effect on our  business,  financial  condition and results of
operations.

INTERNATIONAL OPERATIONS--SALES OVERSEAS PRESENT NEW AREAS OF RISK.

         We plan to grow both in the United States and in foreign countries.  We
have  already  begun to establish  operations  in some  foreign  countries.  Our
international activities may include the export of ETD technology and equipment.

         Foreign  operations  carry  special  risks.  Our  business  in  foreign
countries may be limited or disrupted by:

         o  government controls;         o  changes in tariffs and taxes;
         o  import and export license    o  restrictions on repatriating foreign
            requirements;                   profits back to the United States;
         o  political or economic        o  our unfamiliarity with foreign laws
            instability;                    and regulations; or
         o  trade restrictions;          o  difficulties in staffing and
                                            managing international operations.

         Foreign  governments and agencies often establish permit and regulatory
standards different from those in the United States. If we cannot obtain foreign
regulatory  approvals,  or if we cannot get them when we expect, it could have a
material  adverse  effect  on  our  international  business  and  its  financial
condition and results of operations.

         Fluctuations in currency exchange rates and increases in duty rates for
ETD  equipment  could  have  similar  effects.  On a pro forma  combined  basis,
revenues  from  customers  and other  sources  outside the United States for the
twelve months ending June 30, 1999 were 5.2% of total revenues for the period.

         We cannot assure  you that we will  be able to successfully  operate in
any foreign  market.  See  "Business--Business Strategy"  and  "--Marketing  and
Sales."

LACK OF PUBLIC  MARKET--NO  PUBLIC MARKET EXISTS FOR THE SERIES B NOTES, AND YOU
MAY NOT BE ABLE TO RESELL YOUR SERIES B NOTES.

         The series B notes are a new issue of  securities  with no  established
trading  market and will not be listed on any securities  exchange,  although we
expect  that the  series B notes  will be  eligible  for  trading  in the PORTAL
market.  Firms making a market in these notes may cease their  market-making  at
any time.  In addition,  the  liquidity  of the trading  market for the series B
notes,  if any, and the market  price quoted for the series B notes,  or, in the
case of  non-tendering  holders of series A notes the trading  market and market
price for the  series A notes,  may be  adversely  affected  by the  changes  in
interest  rates in the market for  high-yield  securities  and by changes in our
financial  performance  or  prospects,  or in the prospects for companies in the
medical waste management  industry  generally.  As a result,  you cannot be sure
than an active trading market will develop for these notes.

FRAUDULENT  CONVEYANCE  MATTERS--FEDERAL  AND STATE STATUTES ALLOW COURTS, UNDER
SPECIFIC  CIRCUMSTANCES,  TO VOID  GUARANTEES AND REQUIRE  NOTEHOLDERS TO RETURN
PAYMENTS RECEIVED FROM GUARANTORS.

         Under the federal  bankruptcy  law and  comparable  provisions of state
fraudulent transfer laws, a guarantee,  such as the subsidiary guarantees of the
series B notes by our  subsidiary  guarantors,  could be  voided,  or  claims in

<PAGE>


respect  of a  guarantee  could  be  subordinated  to all  other  debts  of that
guarantor if, among other  things,  the  guarantor,  at the time it incurred the
indebtedness   evidenced  by  its  guarantee,   received  less  than  reasonably
equivalent value or fair  consideration  for the incurrence of a guarantee;  and
any one of the following:

         o    was insolvent or rendered insolvent by reason of any incurrence;

         o    was engaged in a business or transaction for which the guarantor's
              remaining assets constituted unreasonably small capital; or

         o    intended to incur,  or believed that it would incur,  debts beyond
              its ability to pay debts as they mature.

In addition,  any payment by that guarantor  pursuant to its guarantee  could be
voided  and  required  to be  returned  to the  guarantor,  or to a fund for the
benefit of the creditors of the guarantor.

         The measures of insolvency  for purposes of these  fraudulent  transfer
laws will vary  depending  upon the law applied in any  proceeding  to determine
whether a fraudulent  transfer has  occurred.  Generally,  however,  a guarantor
would be considered insolvent if:

         o    the sum of its debts, including contingent liabilities, were
              greater than the fair saleable value of all of its assets;

         o    if the present  fair  saleable  value of its assets were less than
              the amount that would be required to pay its probable liability on
              its existing  debts,  including  contingent  liabilities,  as they
              become absolute and mature; or

         o    it could not pay its debts as they become due.

         On the basis of  historical  financial  information,  recent  operating
history and other factors,  we believe that each of our  subsidiary  guarantors,
after giving  effect to its  subsidiary  guarantee  of these notes,  will not be
insolvent, will not have unreasonably small capital for the business in which it
is engaged and will not have incurred  debts beyond its ability to pay any debts
as they mature. There can be no assurance,  however, as to what standard a court
would apply in making these  determinations or that a court would agree with our
conclusions in this regard.

FINANCING  CHANGE OF  CONTROL  OFFER--WE  MAY NOT HAVE THE  ABILITY TO RAISE THE
FUNDS  NECESSARY  TO  FINANCE  THE  CHANGE  OF  CONTROL  OFFER  REQUIRED  BY THE
INDENTURE.

         Upon the occurrence of specific  change of control  events,  we will be
required to offer to  repurchase  all  outstanding  series A and series B notes.
However,  it is possible that we will not have  sufficient  funds at the time of
the  change  of  control  to make  the  required  repurchase  of  notes  or that
restrictions in our credit facility will not allow any repurchases. In addition,
certain important  corporate events,  such as leveraged  recapitalizations  that
would increase the level of our indebtedness,  would not constitute a "change of
control" under the  indenture.  See  "Description  of  Notes--Repurchase  at the
Option of Holders--Change of Control."



<PAGE>


                SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

         Statements of our intentions,  beliefs, expectations or predictions for
the future, denoted by the words "anticipate,"  "believe," "estimate," "expect,"
"project,"   "imply,"   "intend,"   "foresee"   and  similar   expressions   are
forward-looking  statements  that reflect our current views about future events.
For example,  our current estimate of the timing and amount of cost savings that
we  will  realize  as a  result  of the  BFI  acquisition  is a  forward-looking
statement.  All of  these  forward-looking  statements  are  subject  to  risks,
uncertainties  and  assumptions.  These  risks,  uncertainties  and  assumptions
include those  identified in the "Risk Factors" and "Business"  sections of this
prospectus and the following:

         o    changes  in  laws  or  regulations  affecting  the  medical  waste
              industry generally and our operations in particular;

         o    our success in integrating the  BFI  acquisition and achieving the
              expected cost savings and other benefits of the acquisition;

         o    the success of our acquisition strategy generally;

         o    management  of  our  cash  resources, particularly in light of our
              substantial leverage; and

         o    industry-wide  market  factors  and  other  general  economic  and
              business conditions.

         Although  we  believe   that  the   expectations   reflected  in  these
forward-looking  statements  are  reasonable,  our actual  results  could differ
materially from those projected in these forward-looking  statements as a result
of these factors and others, many of which are beyond our control.  There can be
no assurance our expectations  will prove to have been correct.  We are under no
obligation  to update or revise  any  forward-looking  statements,  whether as a
result of new information,  future events or otherwise. In light of these risks,
uncertainties  and  assumptions,  the  forward-looking  events discussed in this
prospectus might not occur.


<PAGE>


                               THE EXCHANGE OFFER

PURPOSE OF THE EXCHANGE OFFER

         We have commenced  this exchange  offer to provide  holders of series A
notes with an opportunity  to acquire series B notes which,  unlike the series A
notes,  will be freely  tradable at all times,  subject to any  restrictions  on
transfer  imposed by state "blue sky" laws.  On November 12, 1999, we issued and
sold the outstanding series A notes in the aggregate  principal amount of $125.0
million in order to provide a portion of the financing for the BFI  acquisition.
We did not  register  the sale of the series A notes to the  initial  purchasers
under the Securities Act in reliance upon the exemption provided by Section 4(2)
of the  Securities  Act. The initial  purchasers did not register the concurrent
resale of the series A notes to investors  under the  Securities Act in reliance
upon the  exemptions  provided by Rule 144A and  Regulation S of the  Securities
Act.

         You may not reoffer,  resell or transfer your series A notes other than
by means of a  registration  statement  filed  pursuant to the Securities Act or
unless an exemption from the registration  requirements of the Securities Act is
available. Pursuant to Rule 144, you generally may resell your series A notes:

         o    commencing  one year after their original issue date, in an amount
              up to, for any three-month period, the greater of 1% of the series
              A notes then  outstanding  or the average weekly trading volume of
              the series A notes  during  the four  calendar  weeks  immediately
              preceding the filing of the required notice of sale with the SEC;

         o    commencing  two years after the original issue date, in any amount
              and otherwise without restriction as long as you are not, and have
              not been for the preceding 90 days, an affiliate of ours.

         The series A notes are eligible for trading in the PORTAL  market,  and
you may resell your series A notes to qualified institutional buyers pursuant to
Rule 144A.  Other exemptions may also be available under other provisions of the
federal securities laws for the resale of the series A notes.

         In connection  with the original  issue and sale of series A notes,  we
entered into a  registration  rights  agreement,  pursuant to which we agreed to
file with the SEC a  registration  statement  covering the exchange by us of the
series B notes  for the  series  A  notes.  The  registration  rights  agreement
provides that:

         o    we will  file a registration statement with the SEC on or prior to
              120 days after the issue date of the series A notes;

         o    we will  use  all  commercially  reasonable  efforts  to have  the
              registration  statement  declared effective by the SEC on or prior
              to 210 days after the original issue date;

         o    unless this  exchange  offer would not be permitted by  applicable
              law or SEC policy, we will use all commercially reasonable efforts
              to  commence  this  exchange  offer and  issue,  on or prior to 30
              business days after the date on which the  registration  statement
              is declared  effective by the SEC,  series B notes in exchange for
              all series A notes tendered in this exchange offer; and

         o    if obligated to file a shelf  registration  statement covering the
              series A notes, we will file the shelf registration statement with
              the SEC on or prior to 30 days after the filing  obligation arises
              and will use all  commercially  reasonably  efforts  to cause  the
              shelf  registration  statement to be declared effective by the SEC
              on or prior to 60 days after the obligation arises.

         We will pay  liquidated  damages to each holder of  transfer-restricted
securities, as described below, if any of the following occurs:

         o    we fail to file any of the registration statements required by the
              registration  rights agreement on or before the date specified for
              the filing;

<PAGE>


         o    any of the registration statements is not declared effective by
              the SEC on or prior to the date specified for the effectiveness;

         o    we fail to consummate  this exchange offer within 30 business days
              after the date on which the  registration  statement  covering the
              exchange  of  series  B  notes  for  series  A notes  is  declared
              effective; or

         o    any  registration  statement  filed by us pursuant to the terms of
              the  registration  rights  agreement  is  declared  effective  but
              thereafter  ceases to be  effective or usable in  connection  with
              resales  of  transfer-restricted  securities  during  the  periods
              specified in the registration rights agreement.

         We will pay  liquidated  damages to the holders of  transfer-restricted
securities,  with respect to the first 90-day period  immediately  following the
occurrence  of a  default,  in an  amount  equal to $.05  per  week  per  $1,000
principal amount of transfer-restricted securities. The amount paid by us to the
holders  of series A notes  will  increase  by an  additional  $.05 per week per
$1,000 principal amount of  transfer-restricted  securities with respect to each
subsequent  90-day  period  until all  defaults  have been cured up to a maximum
amount  of $.50 per week per  $1,000  principal  amount  of  transfer-restricted
securities, regardless of whether one or more default is outstanding.  Following
the cure of all defaults, the accrual of damages will cease.

         "Transfer-restricted securities" means each series B note received by a
broker-dealer in exchange for a series A note until the date on which the series
B note is disposed of by the broker-dealer  pursuant to the procedures  outlined
under  the  caption  "Plan of  Distribution,"  including  the  delivery  of this
prospectus and each series A note until:

         o    the date on which  the  series A note has been  exchanged  in this
              exchange  offer for a series B note which is entitled to be resold
              to the public by the holder  thereof  without  complying  with the
              prospectus delivery requirements of the Securities Act;

         o    the date on which  the  series  A note  has  been  disposed  of in
              accordance with a shelf registration  statement and the purchasers
              thereof have been issued series B notes; or

         o    the date on which the series A  note is  distributed to the public
              pursuant to Rule 144 under the Securities Act.

         The series B notes  otherwise  will be  substantially  identical in all
material respects,  including interest rate, maturity,  security and restrictive
covenants,  to the series A notes for which they may be  exchanged  pursuant  to
this exchange offer.

TERMS OF THE EXCHANGE OFFER

         Upon  the  terms  and  subject  to the  conditions  set  forth  in this
prospectus  and in the  accompanying  letter of  transmittal,  we will  exchange
$1,000  principal  amount of series B notes for each $1,000  principal amount of
our outstanding  series A notes.  Series B notes will be issued only in integral
multiplies of $1,000 to each  tendering  holder of series A notes whose series A
notes are accepted in this exchange offer.

         The series B notes will bear  interest  from and including the original
issue date of the series A notes. Accordingly,  if you receive series B notes in
exchange for series A notes, you will forego accrued but unpaid interest on your
exchanged series A notes for the period from and including the issue date of the
series A notes  to the date of your  exchange  for  series B notes,  but will be
entitled to interest under the series B notes.

         As of the date of this prospectus,  $125.0 million aggregate  principal
amount of series A notes were  outstanding.  This  prospectus  and the letter of
transmittal  are being  sent to all  registered  holders of series A notes as of
this date.  You will not be required to pay  brokerage  commissions  or fees or,
subject to the  instructions in the letter of  transmittal,  transfer taxes with
respect to your exchange of series A notes pursuant to this exchange  offer.  We

<PAGE>


will pay all charges and expenses,  other than specific  transfer taxes that may
be imposed,  in connection with this exchange offer. See "--Payment of Expenses"
below.

         As a  holder  of  series A notes,  you do not  have  any  appraisal  or
dissenters' rights under the Delaware General Corporation Law in connection with
this exchange offer.

EXPIRATION DATE; EXTENSIONS; TERMINATION

         This  exchange  offer will expire at 5:00 p.m.,  New York City time, on
Friday,  January 21,  2000,  subject to our  extension by notice to State Street
Bank and Trust Company,  the exchange agent. We reserve the right to extend this
exchange offer in our  discretion,  in which event the expiration  date shall be
the time and date on which this exchange offer as so extended  shall expire.  We
shall notify the exchange  agent of any extension by oral or written  notice and
shall mail to you an  announcement  thereof,  each prior to 9:00 a.m.,  New York
City time, on the next business day after the  previously  scheduled  expiration
date.

         We reserve the right to extend or terminate this exchange offer and not
accept for  exchange  any  series A notes if any of the  events set forth  below
under  "--Conditions  to the Exchange  Offer" occur and are not waived by us, by
giving  oral or written  notice of this  delay or  termination  to the  exchange
agent.  See  "--Conditions to the Exchange Offer." The rights we reserve in this
paragraph  are in  addition  to our rights set forth below under the caption "--
Conditions to the Exchange Offer."

PROCEDURES FOR TENDERING

         Your  tender of series A notes  pursuant to one of the  procedures  set
forth below and our acceptance will  constitute an agreement  between you and us
in  accordance  with the terms and subject to the  conditions  set forth in this
prospectus and the letter of transmittal.

         Except as set forth  below,  if you who wish to  tender  your  series A
notes for exchange pursuant to this exchange offer, you must transmit a properly
completed and duly executed letter of transmittal, including all other documents
required by the letter of transmittal,  to the exchange agent at the address set
forth  below  under  "Exchange  Agent" on or prior to the  expiration  date.  In
addition, either:

         o    certificates  for the  series A notes  must  be  received  by  the
              exchange agent along with the letter of transmittal; or

         o    a timely  confirmation  of a  book-entry  transfer of the series A
              notes,  if the procedure is available,  into the exchange  agent's
              account at The Depository  Trust Company pursuant to the procedure
              for book-entry  transfer  described below, must be received by the
              exchange agent prior to the expiration date; or

         o    the  holder  must comply with the guaranteed  delivery  procedures
              described below.

         Letters of transmittal  and series A notes should not be sent to us. We
are not asking you for a proxy, and you are requested not to send us a proxy.

         Signatures on a letter of  transmittal  must be  guaranteed  unless the
series A notes are tendered (1) by a registered holder of series A notes who has
not completed the box entitled "Special  Issuance and Delivery  Instructions" on
the letter of transmittal or (2) for the account of any firm that is a member of
a  registered   national  securities  exchange  or  a  member  of  the  National
Association of Securities  Dealers,  Inc. or a commercial  bank or trust company
having an office in the U.S., sometimes referred to as an eligible  institution.
In the event that  signatures  on a letter of  transmittal  are  required  to be
guaranteed, the guarantee must be by an eligible institution.

         Your method of delivery  of series A notes and other  documents  to the
exchange  agent is at your  election  and risk,  but if  delivery  is by mail we
suggest that the mailing be made  sufficiently in advance of the expiration date
to permit delivery to the exchange agent before the expiration date.


<PAGE>


         If the  letter  of  transmittal  is  signed  by a person  other  than a
registered  holder  of any  tendered  series A note,  the  series A note must be
endorsed  or  accompanied  by  appropriate  bond  powers,  in either case signed
exactly as the name or names of the  registered  holder or holders appear on the
series A note.

         If the letter of  transmittal  or any series A notes or bond powers are
signed by trustees,  executors,  administrators,  guardians,  attorneys-in-fact,
officers  of  corporations  or others  acting in a fiduciary  or  representative
capacity,  they should  indicate the  capacity in which they are  signing,  and,
unless  waived by us,  should  provide  proper  evidence  satisfactory  of their
authority to act.

         We will resolve all  questions as to the validity,  form,  eligibility,
including  time of receipt  and  acceptance  of tendered  series A notes,  which
determination will be final and binding. We reserve the absolute right to reject
any or all tenders that are not in proper form or the acceptance of which would,
in the opinion of our counsel,  be unlawful.  We also reserve the right to waive
any  irregularities or conditions of tender as to particular series A notes. Our
interpretation of the terms and conditions of this exchange offer, including the
instructions  in the letter of  transmittal,  will be final and binding.  Unless
waived,  any  irregularities in connection with tenders must be cured within the
period of time  determined by us. Neither we nor the exchange agent is under any
duty to give notification of defects in these tenders or shall incur liabilities
for failure to give  notification.  Tenders of series A notes will not be deemed
to have been made until any irregularities have been cured or waived. Any series
A notes received by the exchange agent that are not properly  tendered and as to
which the  irregularities  have not been cured or waived will be returned by the
exchange agent to the tendering holder,  unless otherwise provided in the letter
of transmittal, as soon as practicable following the expiration date.

         Our  acceptance of your series A notes  pursuant to this exchange offer
will  constitute  a  binding  agreement  between  you and us upon the  terms and
subject to the conditions of this exchange offer.

BOOK-ENTRY TRANSFER

         The  exchange  agent will make a request to  establish  an account with
respect to the series A notes at DTC for purposes of this exchange  offer within
two business days after the date of effectiveness of the registration  statement
of which this prospectus  forms a part, and any financial  institution that is a
participant in DTC's systems may make  book-entry  delivery of series A notes by
causing DTC to transfer series A notes into the exchange  agent's account at DTC
in accordance with DTC's procedures for transfer.  However, although delivery of
series A notes may be effected through book-entry transfer at DTC, the letter of
transmittal or facsimile thereof with any required signature  guarantees and any
other  required  documents  must, in any case, be transmitted to and received by
the  exchange  agent at one of the  addresses  set forth below  under  "Exchange
Agent" on or prior to the expiration date or the guaranteed  delivery procedures
described below must be complied with.

GUARANTEED DELIVERY PROCEDURES

         If you wish to tender  your  series A notes and (1) your series A notes
are not immediately available or (2) you cannot deliver your series A notes, the
letter of  transmittal  or any other  required  documents to the exchange  agent
prior to the expiration date, you may effect a tender if:

         o    your tender is made through an eligible institution;

         o    prior  to the  expiration date, the exchange agent  receives  from
              your  designated  eligible  institution a properly  completed  and
              duly  executed   notice  of  guaranteed   delivery  by   facsimile
              transmission,  mail or hand delivery  setting forth your  name and
              address,  the  certificate  number(s) of your  tendered   series A
              notes and the principal  amount of your tendered  series  A notes,
              stating  that the tender is being made  thereby and   guaranteeing
              that,  within five NYSE trading days after the  expiration   date,
              the letter of transmittal or facsimile  thereof together  with the
              certificate(s)  representing your series A notes, or a  book-entry
              confirmation,  as the  case  may  be,  and  any  other   documents
              required by the letter of  transmittal  will be  deposited  by the
              eligible institution with the exchange agent; and


<PAGE>


         o    your properly  completed  and executed  letter of  transmittal  or
              facsimile thereof, as well as the certificate(s)  representing all
              your  tendered  series A notes in proper form for  transfer,  or a
              book-entry  confirmation,  as the  case  may  be,  and  all  other
              documents  required by the letter of  transmittal  are received by
              the  exchange  agent  within  five  NYSE  trading  days  after the
              expiration date.

         Upon request of the exchange agent,  the exchange agent or we will send
a notice of guaranteed delivery to you if you wish to tender your series A notes
according to the guaranteed delivery procedures set forth above.

CONDITIONS TO THE EXCHANGE OFFER

         Notwithstanding  any other  provisions  of this  exchange  offer or any
extension  of this  exchange  offer,  we will not be required to issue  series B
notes  in  respect  of any  properly  tendered  series  A notes  not  previously
accepted, and may terminate this exchange offer by oral or written notice to the
exchange agent and the holders, or at our option, modify or otherwise amend this
exchange  offer,  if any  material  change  occurs that is likely to affect this
exchange offer, including, but not limited to, the following:

         o    there shall be instituted  or threatened  any action or proceeding
              before any court or governmental  agency challenging this exchange
              offer  or  otherwise  directly  or  indirectly  relating  to  this
              exchange offer or otherwise affecting us;

         o    there  shall  occur  any  development  in any  pending  action  or
              proceeding that, in our sole judgment,  would or might (1) have an
              adverse  effect on our business,  (2) prohibit,  restrict or delay
              consummation of this exchange offer or (3) impair the contemplated
              benefits of this exchange offer;

         o    any  statute,  rule or  regulation  shall  have been  proposed  or
              enacted,  or any action shall have been taken by any  governmental
              authority which, in our sole judgment,  would or might (1) have an
              adverse  effect on our business,  (2) prohibit,  restrict or delay
              consummation of this exchange offer or (3) impair the contemplated
              benefits of this exchange offer; or

         o    there exists, in our sole judgment, any actual or threatened legal
              impediment,  including a default or  prospective  default under an
              agreement, indenture or other instrument or obligation to which we
              are a party or by which we are bound,  to the  consummation of the
              transactions contemplated by this exchange offer.

         We expressly reserve the right to terminate this exchange offer and not
accept  for  exchange  any  series  A notes  upon the  occurrence  of any of the
foregoing conditions.  In addition, we may amend this exchange offer at any time
prior to 5:00 p.m.,  New York City time,  on the  expiration  date if any of the
conditions  listed above  occur.  Moreover,  regardless  of whether any of these
conditions has occurred, we may amend this exchange offer in any manner that, in
our good faith judgment, is advantageous to you.

         These  conditions  are for our sole benefit and may be waived by us, in
whole or in part, in our sole discretion.  Any  determination we make concerning
an event,  development  or  circumstance  described or referred to above will be
final and binding on all parties.

ACCEPTANCE OF SERIES A NOTES FOR EXCHANGE; DELIVERY OF SERIES B NOTES

         Upon the terms and subject to the conditions of this exchange offer, we
will accept all series A notes  validly  tendered  prior to 5:00 p.m.,  New York
City time, on the  expiration  date. We will deliver  series B notes in exchange
for series A notes promptly following the expiration date.

         For  purposes  of this  exchange  offer,  we  shall be  deemed  to have
accepted  validly  tendered series A notes when, as and if we have given oral or
written notice of acceptance to the exchange agent.  The exchange agent will act
as agent for the  tendering  holders for the purpose of  receiving  the series A
notes.  Under no circumstances will interest be paid by the exchange agent or us
for any delay in making payment or delivery.


<PAGE>


         If we do not accept your tendered  series A notes for exchange  because
of an invalid  tender,  the occurrence of other events listed in this prospectus
or  otherwise,  we will  return  your  unaccepted  series A notes to you, at our
expense,  as promptly as practicable after the expiration or termination of this
exchange offer.

WITHDRAWAL RIGHTS

         Your tender of series A notes may be withdrawn at any time prior to the
expiration date.

         For your withdrawal to be effective,  you must deliver a written notice
of  withdrawal  to the  exchange  agent at the  address  set forth  below  under
"Exchange Agent." Your notice of withdrawal must specify your name, identify the
series A notes to be  withdrawn,  including  the principal  amount,  and,  where
certificates for series A notes have been transmitted, specify the name in which
the series A notes are registered,  if different from your name. If certificates
for series A notes have been  delivered or otherwise  identified to the exchange
agent,  then prior to the release of the  certificates  you must also submit the
serial  numbers of the  particular  certificates  to be  withdrawn  and a signed
notice of  withdrawal  with  signatures  guaranteed  by an eligible  institution
unless  you are an  eligible  institution.  If your  series  A notes  have  been
tendered pursuant to the procedure for book-entry transfer described above, your
notice of  withdrawal  must specify the name and number of the account at DTC to
be credited  with the  withdrawn  series A notes and  otherwise  comply with the
procedures of the facility.  We will determine all questions as to the validity,
form  and  eligibility  (including  time of  receipt)  of these  notices,  which
determination shall be final and binding on all parties.

         Any series A notes that are  withdrawn  will be deemed not to have been
validly  tendered for exchange for purposes of this exchange offer. Any series A
notes that have been  tendered for exchange but that are not  exchanged  for any
reason will be returned to the holder thereof without cost to the holder, or, in
the case of series A notes  tendered by  book-entry  transfer  into the exchange
agent's account at DTC pursuant to the book-entry transfer procedures  described
above,  will be  credited  to an  account  maintained  with DTC for the series A
notes,  as  soon  as  practicable  after  withdrawal,  rejection  of  tender  or
termination  of this  exchange  offer.  You may retender any properly  withdrawn
series A notes by following one of the procedures  described under "--Procedures
for Tendering" above at any time on or prior to the expiration date.

MATERIAL FEDERAL INCOME TAX CONSEQUENCES

         The following  discussion  summarizes  the material  federal income tax
consequences of this exchange  offer.  This discussion is not binding on the IRS
or the courts,  and we cannot assure you that the IRS will not take,  and that a
court would not  sustain,  a position  contrary to that  described  below.  This
summary  is  based on the  current  provisions  of the tax  code and  applicable
Treasury regulations, judicial authority and administrative pronouncements.  The
tax  consequences  described  below could be  modified by future  changes in the
relevant law, which could have retroactive  effect.  You should consult your own
tax adviser as to these and any other federal  income tax  consequences  of this
exchange  offer as well as any tax  consequences  to you under  foreign,  state,
local or other law.

         The exchange of the series A notes for series B notes  pursuant to this
exchange  offer should not be treated as an "exchange"  for U.S.  federal income
tax  purposes  because  the  series B notes  will not be  considered  to  differ
materially in kind or extent from the series A notes. Rather, any series B notes
received by you should be treated as a  continuation  of your  investment in the
series A notes. As a result, there should be no material U.S. federal income tax
consequences to you resulting from the exchange  offer. In addition,  you should
have the same adjusted  issue price,  adjusted  basis and holding  period in the
series  B  notes  as you had in the  series  A notes  immediately  prior  to the
exchange. See "Federal Income Tax Considerations."



<PAGE>


EXCHANGE AGENT

         State  Street  Bank and Trust  Company has been  appointed  as exchange
agent  for this  exchange  offer.  You  should  address  all  correspondence  in
connection  with this  exchange  offer  and the  letter  of  transmittal  to the
exchange agent as follows:

<TABLE>

                                        State Street Bank and Trust Company

   By Registered or Certified Mail:              By Hand /Overnight Delivery:                  By Facsimile:
- ----------------------------------------    ----------------------------------------    -----------------------------
<S>                                           <C>                                           <C>
  State Street Bank and Trust Company         State Street Bank and Trust Company              (617) 662-1452
             P.O. Box 778                           Two Avenue de Lafayette
         Boston, MA 02102-0078                 5th Floor, Corporate Trust Window            Confirm by Telephone
       Attention: Kellie Mullen                      Boston, MA 02111-1724                     (617) 662-1525
                                                 Attention: Kellie Mullen/
                                                      MacKenzie Elijah
</TABLE>

         You may request  additional  copies of this prospectus or the letter of
transmittal from the exchange agent or us.

PAYMENT OF EXPENSES

         We have not retained any  dealer-manager or similar agent in connection
with this exchange  offer and will not make any payments to brokers,  dealers or
others for soliciting  acceptances of this exchange offer. We, however, will pay
reasonable  and  customary  fees and  reasonable  out-of-pocket  expenses to the
exchange agent in connection with the solicitation of acceptances.  We will also
pay the cash  expenses to be incurred in connection  with this  exchange  offer,
including accounting, legal, printing and related fees and expenses.

ACCOUNTING TREATMENT

         We will  record  the series B notes at the same  carrying  value as the
series  A notes,  as  reflected  in our  accounting  records  on the date of the
exchange.  Accordingly,  we  will  recognize  no gain  or  loss  for  accounting
purposes.  We will capitalize our expenses of this exchange offer for accounting
purposes.

RESALES OF NOTES

         With  respect  to  resales  of  series B notes,  based on  interpretive
letters  issued  by the staff of the SEC to third  parties,  we  believe  that a
holder of series B notes who exchanged  series A notes for series B notes in the
ordinary  course of business  and who is not  participating,  does not intend to
participate  and  has  no  arrangement  or  understanding  with  any  person  to
participate  in a  distribution  of the series B notes will be allowed to resell
the  series  B notes  to the  public  without  further  registration  under  the
Securities  Act and without  delivering  to  purchasers  of the series B notes a
prospectus that satisfies the requirements of the Securities Act, except for:

         o    a broker-dealer  who purchases  series B notes directly from us to
              resell  pursuant  to Rule  144A or any other  available  exemption
              under the Securities Act, or

         o    a  person who  is  our "affiliate" within  the meaning of Rule 405
              under the Securities Act.

         However,  a  broker-dealer  who holds series A notes that were acquired
for its own account as a result of market-making or other trading activities may
be deemed to be an  underwriter  within the  meaning of the  Securities  Act and
must, therefore, deliver a prospectus meeting the requirements of the Securities
Act. If any other  holder is deemed to be an  underwriter  within the meaning of
the  Securities  Act or acquires  series B notes in this exchange  offer for the
purpose of  distributing or  participating  in a distribution of series B notes,
the  holder  must  comply  with  the   registration   and  prospectus   delivery
requirements  of the  Securities  Act in  connection  with  a  secondary  resale

<PAGE>


transaction,  unless an exemption from registration is otherwise  available.  We
have agreed  that for a period of up to one year from the  expiration  date,  we
will make this prospectus, as amended or supplemented,  available to any broker-
dealer for use in connection with any resale.


<PAGE>


                               THE BFI ACQUISITION

TRANSACTION OVERVIEW

         On November 12, 1999,  we acquired from Allied all of the medical waste
management  operations of BFI and Allied in the United States, Canada and Puerto
Rico.  The purchase price was $410.5  million in cash,  subject to  post-closing
adjustment.  Our purchase of the BFI medical waste  business  excluded  accounts
receivable and accounts payable. As a result,  based on historical  requirements
of the BFI medical waste business, we expect to make a net investment in working
capital of approximately $15.0 million in the twelve months following closing.

         Prior to the BFI acquisition, BFI was the largest provider of regulated
medical waste  services in the United  States.  For the twelve months ended June
30, 1999,  BFI's  medical  waste  business had revenues of $201.7  million.  The
medical waste business that Allied owned prior to the BFI acquisition represents
an insignificant amount of the businesses we acquired.

TRANSITION AGREEMENT

         We have entered into a transition  agreement  with Allied that requires
Allied, for a period of one year following the closing,  to provide  operational
and administrative support to us and to make facilities available to us in order
to  facilitate  a  smooth  transition  of the BFI  medical  waste  business.  In
particular, this agreement requires Allied to: (1) continue to operate permitted
treatment and disposal facilities and transfer stations of the BFI medical waste
business for us until we receive the necessary  permits and approvals to operate
them, (2) make  available to us at operating  locations of the BFI medical waste
business  substantially  the  same  space  used by that  business  prior  to the
closing, and (3) to provide operational and administrative  support to us at the
operating  locations  of  the  BFI  medical  waste  business  as we  require  to
facilitate  a  smooth  transition,  including  vehicle  maintenance,   telephone
answering,  dispatching,  backup  drivers,  personnel  assistance  and  customer
billing.  The  transition  agreement  requires us to reimburse  Allied for these
services on a direct cost,  pass-through  basis,  except that for services other
than  facility  operation  there are no  charges  during  the  first six  months
following the closing of the BFI acquisition provided we use our reasonable best
efforts to stop using these services as soon as possible.



<PAGE>


                                 CAPITALIZATION

         The  following  table  sets  forth  our  consolidated   cash  and  cash
equivalents and  capitalization  as of September 30, 1999 on an actual basis and
pro  forma  to  give  effect  to  the  BFI  acquisition  and  related  financing
transactions  as if those events all occurred on September 30, 1999.  You should
read this table in  conjunction  with  "Management's  Discussion and Analysis of
Financial   Condition  and  Results  of   Operations,"   "Description  of  Other
Indebtedness" and our financial statements and notes thereto.

<TABLE>

                                                                                   AS OF SEPTEMBER 30,
                                                                                          1999
                                                                                  ACTUAL        PRO FORMA
                                                                                  ------        ---------
                                                                                     (IN THOUSANDS)


<S>                                                                         <C>             <C>
Cash and cash equivalents...............................................    $    16,017     $      12,348
                                                                            ===========     =============
Long-term debt (including current portion):
    Credit facility:
      Revolving credit facility(1)......................................    $        --     $          --
      Term loan A.......................................................             --            75,000
      Term loan B.......................................................             --           150,000
   Series A notes.......................................................             --           125,000
   Capital leases assumed...............................................             --             5,132
   Existing indebtedness................................................          5,778             5,778
                                                                            -----------     -------------
      Total long-term debt, including current portion...................          5,778           360,910
Convertible Preferred Stock.............................................             --            70,275
Common shareholders' equity:
   Common stock.........................................................            147               147
   Additional paid-in capital...........................................        136,148           136,148
   Accumulated deficit..................................................        (24,483)          (26,283)
                                                                            -----------     -------------
      Common shareholders' equity.......................................        111,812           110,012
                                                                            -----------     -------------
      Total capitalization..............................................    $   117,590     $     541,197
                                                                            ===========     =============

(1)      Our revolving credit facility has a total availability of $50.0 million, subject to satisfaction of
         customary conditions. See "Description of Other Indebtedness-- Credit Facility."

</TABLE>

<PAGE>


           UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL STATEMENTS
                OF STERICYCLE AND THE BFI MEDICAL WASTE BUSINESS

         The  unaudited  pro  forma  condensed  combined  balance  sheet  as  of
September  30, 1999 gives  effect to the  following,  as if each had occurred on
September 30, 1999:

         (i)  the BFI acquisition;

         (ii) the offering of the series A notes;

         (iii)$225 million of borrowings  under our credit facility with various
              financial institutions,  DLJ Capital Funding, Inc., as syndication
              agent for the financial institutions,  lead arranger and sole book
              running manager,  Bank of America,  N.A., as administrative  agent
              for the  financial  institutions,  and Bankers Trust  Company,  as
              documentation   agent   for  the   financial   institutions   (See
              "Description of Other Indebtedness -- Credit Facility");

         (iv) $75.0  million of gross  proceeds  from the sale by us on November
              12, 1999 of our convertible  preferred  stock to investment  funds
              associated  with Bain  Capital,  Inc.  and with  Madison  Dearborn
              Partners,  Inc.,  which  represents  approximately  22.6%  of  our
              outstanding   common  stock  on  an  as-if  converted  basis  (See
              "Description of Capital Stock -- Convertible Preferred Stock");

         (v) the application of the net proceeds  received from (ii),  (iii) and
             (iv) above; and

         (vi) the costs and expenses associated with (i)-(iv) above.

         The unaudited pro forma condensed combined statements of operations for
the year ended  December  31, 1998 and for the nine months ended  September  30,
1999 give effect to these  transactions  as if each occurred at the beginning of
the period presented.  In addition,  the unaudited pro forma condensed  combined
statements of operations  include our  acquisition of Waste  Systems,  Inc., the
majority owner of 3CI Complete Compliance  Corporation,  which closed in October
1998,   the   acquisition   of  Med-Tech   Environmental   Limited  and  related
transactions,  which closed in December  1998,  and the  acquisition  of Medical
Disposal  Systems,  which  closed in April 1999,  as if each had occurred at the
beginning of the period presented.

         The unadited pro forma condensed combined  financial  statements do not
include  adjustments  to reflect (a) cost savings that we expect to realize over
the year following the BFI  acquisition  or (b) an increase in selling,  general
and administrative expense to reflect the allocation of historical BFI corporate
and shared services costs to the BFI medical waste business. See Note 5 of Notes
to Pro Forma  Condensed  Combined  Statements of  Operations.  The unaudited pro
forma financial data do not purport to represent what our financial position and
results of operations would have been if the  transactions  listed above and the
other  acquisitions had actually  occurred as of the dates indicated and are not
intended to project our  financial  position  or results of  operations  for any
future  period.  See "Special Note  Regarding  Forward-Looking  Statements"  and
"Management's  Discussion  and  Analysis of Financial  Condition  and Results of
Operations."

         The  pro  forma  adjustments  to  the  purchase  price  allocation  and
financing of the BFI medical waste  business  acquisition  are  preliminary  and
based on information  obtained to date that is subject to revision as additional
information  becomes  available.  Revision  to the  preliminary  purchase  price
allocation  and financing may have a significant  impact on total assets,  total
liabilities and  shareholders'  equity,  cost of revenue,  selling,  general and
administrative expenses, depreciation and amortization and interest expense.

         The unaudited pro forma condensed combined financial  statements should
be read in  conjunction  with the notes  thereto,  the  historical  consolidated
financial  statements of Stericycle and related notes thereto  included  herein,
and the  historical  financial  statements of the BFI medical waste business and
related notes thereto included herein.


<PAGE>

<TABLE>

                               UNAUDITED PRO FORMA CONDENSED COMBINED BALANCE SHEET
                                             AS OF SEPTEMBER 30, 1999
                                                  (IN THOUSANDS)
<CAPTION>


                                                                  BFI MEDICAL
                                                  STERICYCLE         WASTE           PRO FORMA
                                                   HISTORICAL     HISTORICAL        ADJUSTMENTS               PRO FORMA
                                                   ----------     ----------        -----------               ---------
                                                   (NOTE 1)        (NOTE 2)          (NOTE 3)


                                     ASSETS

<S>                                              <C>              <C>              <C>                     <C>
Cash and cash equivalents...................     $      16,017    $         --     $      (3,669)   (a)    $      12,348
Other current assets........................            25,213          18,152           (16,552)   (b)           26,813
                                                 -------------    ------------     --------------          -------------
Total current assets........................            41,230          18,152           (20,221)                 39,161
Property and equipment, net.................            22,435          60,548            (6,001)   (c)           76,982
Other assets................................             5,539           3,061            16,359    (d)           24,959
Goodwill, net...............................            59,524          53,100           301,708    (e)          414,332
                                                 -------------    ------------     -------------           -------------
Total assets................................     $     128,728    $    134,861     $     291,845           $     555,434
                                                 =============    ============     =============           =============

                      LIABILITIES AND SHAREHOLDERS' EQUITY

Other current liabilities...................     $      11,138    $      3,198     $         (99)   (f)    $      14,237
Current portion of long-term debt...........             1,900             970             3,375    (g)            6,245
                                                 -------------    ------------     -------------           -------------
Total current liabilities...................            13,038           4,168             3,276                  20,482
Long-term debt, net of current portion......             3,878           4,162           346,625    (g)          354,665
Other long-term liabilities.................                --             938              (938)   (h)               --
Convertible preferred stock.................                --              --            70,275    (i)           70,275
Common shareholders' equity.................           111,812         125,593          (127,393)   (j)          110,012
                                                 -------------    ------------     --------------          -------------
Total liabilities and
    shareholders' equity....................     $     128,728    $    134,861     $     291,845           $     555,434
                                                 =============    ============     =============           =============

                   The accompanying notes are an integral part
                      of this unaudited pro forma condensed
                             combined balance sheet.

</TABLE>


<PAGE>


         NOTES TO UNAUDITED PRO FORMA CONDENSED COMBINED BALANCE SHEET

1.       STERICYCLE HISTORICAL

         The historical  balances  represent the  consolidated  balance sheet of
Stericycle  as of  September  30, 1999 as reported in the  unaudited  historical
consolidated financial statements of Stericycle.

2.       BFI MEDICAL WASTE BUSINESS HISTORICAL

         The amounts  related to the BFI medical waste business in the pro forma
condensed combined balance sheet represent the historical assets and liabilities
of the BFI medical waste business (which includes the Medical  Disposal  Systems
acquisition)  as of June 30,  1999,  as  reported  in the  unaudited  historical
financial  statements of the BFI medical waste business.  The amount included in
common  shareholders'  equity  in the  unaudited  pro forma  condensed  combined
balance  sheet for the BFI medical waste  business is its directly  identifiable
assets in excess of its directly identifiable liabilities.

3.       PRO FORMA ADJUSTMENTS

         The  pro  forma  adjustments  reflected  in  the  unaudited  pro  forma
condensed  combined  balance sheet give effect to the  following (in  thousands,
except share data):

         (a) The use of  Stericycle  cash on hand to fund a portion  of the cash
         required in connection with the BFI  acquisition and related  financing
         transactions, as follows:

Total Stericycle cash required..........................  $      6,475
Transaction costs paid by September 30, 1999............        (2,806)
                                                          ------------
                                                          $      3,669
                                                          ============

         (b) The  elimination  of the  historical  book value of the BFI medical
         waste business accounts receivable of $16,552, which is not included in
         the net assets acquired.

         (c) Based on preliminary appraisal information, the historical net book
         values of the acquired  property and  equipment  exceed the fair market
         values of these assets by approximately $6,001.

         (d) The  increase  in the  fair  value  of  intangible  assets  and the
         capitalization of deferred financing fees and costs, as follows:

Increase in fair value of intangible assets...............$    5,109
Payment of deferred financing fees and costs..............    11,250
                                                          ----------
                                                          $   16,359
                                                          ==========

         (e)  The  incremental  increase  in  goodwill  resulting  from  the BFI
acquisition, as follows:

<TABLE>

<S>                                                                             <C>
Cost in excess of the estimated fair value of the acquired net assets......     $    358,315
Elimination of historical goodwill of the BFI medical waste business.......          (53,100)
Transaction costs incurred by September 30, 1999...........................           (3,507)
                                                                                ------------
                                                                                $    301,708
                                                                                ============
</TABLE>

         (f)  Adjustments  to  exclude  the  historical  book  value of  accrued
         liabilities  which are not  included in the net assets  acquired and to
         record liabilities in accordance with EITF Issue 95-3,  "Recognition of
         Liabilities in Connection  with a Purchase  Business  Combination"  and
         EITF Issue 94-3, "Liability Recognition of Certain Employee Termination
         Benefits and Other Costs to Exit an Activity  (Including  Certain Costs
         Incurred in a Restructuring)." The liabilities recognized in accordance
         with EITF 95-3 and EITF 94-3  represent  severance  and  closure  costs
         estimated to be incurred in the  expected  elimination  of  duplicative

<PAGE>


         personnel  and  closing  of  certain  duplicative  facilities  of  both
         Stericycle and the BFI medical waste  business.  The adjustments are as
         follows:

<TABLE>

<S>                                                                                   <C>
Liabilities relating to the BFI medical waste business severance and facility
    closings........................................................................  $     2,000
Liabilities relating to Stericycle severance and facility closings, net of tax......        1,800
Elimination of historical accrued liabilities of the BFI medical waste business.....       (3,198)
Transaction costs accrued at September 30, 1999.....................................         (701)
                                                                                      ------------
                                                                                      $       (99)
                                                                                      ===========
</TABLE>

         (g) The  offering  of series A notes and  borrowings  under our  credit
facility calculated as follows:

Proceeds from our credit facility................................  $     225,000
Proceeds from the series A notes.................................        125,000
                                                                   -------------
                                                                   $     350,000
                                                                   =============

         The net increase in long-term debt has been classified as follows:

Current portion of long-term debt................................  $       3,375
Long-term debt, net of current portion...........................        346,625
                                                                   -------------
                                                                   $     350,000
                                                                   =============

         (h) The elimination of other long-term  liabilities of $938, which were
         not assumed in the BFI acquisition.

         (i) The issuance of 75,000  shares of 3.375%  payment-in-kind  series A
         convertible  preferred stock and payment of the related  financing fees
         and costs, as follows:

Issuance of Convertible Preferred Stock..........................  $     75,000
Payment of financing fees and costs..............................        (4,725)
                                                                   -------------
                                                                   $     70,275
                                                                   =============

         (j) The elimination of the historical  shareholders'  equity of the BFI
         medical  waste  business and an accrual for a Stericycle  restructuring
         charge in accordance with EITF 94-3, as follows:

Elimination of historical shareholders' equity..................... $  (125,593)
Liabilities relating to Stericycle severance and facility
     closings, net of tax...........................                     (1,800)
                                                                    ------------
                                                                    $  (127,393)


<PAGE>

<TABLE>

                          UNAUDITED PRO FORMA CONDENSED COMBINED STATEMENT OF OPERATIONS
                                       FOR THE YEAR ENDED DECEMBER 31, 1998
                                                  (IN THOUSANDS)
<CAPTION>


                                                    BFI           ADJUSTMENTS          OTHER
                               STERICYCLE      MEDICAL WASTE       FOR PRIOR         PRO FORMA
                               HISTORICAL       HISTORICAL       ACQUISITIONS       ADJUSTMENTS       PRO FORMA
                               ----------       ----------       ------------       -----------       ---------
                                (NOTE 1)         (NOTE 2)          (NOTE 3)          (NOTE 4)

<S>                           <C>               <C>              <C>                <C>             <C>
Revenues..................... $    66,681       $   198,222      $    25,372        $        --     $    290,275
Cost of revenues.............     (45,328)         (132,629)         (19,282)             6,884 (a)     (190,355)
Selling, general and
   administrative expense....     (14,929)          (13,273)          (4,964)            (7,553)(b)      (40,719)
Special charges..............          --              (257)            (178)                --             (435)
                              -----------       -----------      -----------        -----------     ------------
Operating income.............       6,424            52,063              948               (669)          58,766
Interest income..............         714                --               --                 --              714
Interest expense.............        (777)               --           (1,619)           (36,770)(d)      (39,166)
                              -----------       -----------      -----------        ------------    ------------
Income before income taxes...       6,361            52,063             (671)           (37,439)          20,314
Income tax expense...........        (648)               --               --             (5,438)(e)       (6,086)
Minority interest............          --                --               43                 --               43
                              -----------       -----------      -----------        -----------     ------------
Net income...................       5,713            52,063             (628)           (42,877)          14,271
Dividends on convertible
   preferred stock...........          --                --               --             (2,531)(f)       (2,531)
                              -----------       -----------      -----------        ------------    ------------
Net income applicable to
   common shareholders....... $     5,713       $    52,063      $      (628)       $   (45,408)    $     11,740
                              ===========       ===========      ===========        ============    ============

Basic earnings per share..... $      0.54                --               --                 --     $       1.10
                              ===========                                                           ============
Weighted average common
   shares outstanding........      10,647                --               37                 --           10,684
                              ===========                        ===========                        ============
Diluted earnings per share... $      0.51                --               --                 --     $       0.92
                              ===========                                                           ============
Weighted average common
   and common equivalent
   shares outstanding........      11,264                --               37              4,286 (g)       15,586
                              ===========                        ===========        ===========     ============
OTHER DATA:
Ratio of earnings to
   fixed charges.............                                                                               1.5x


     The accompanying notes are an integral part of this unaudited pro forma
                  condensed combined statement of operations.

</TABLE>

<PAGE>

<TABLE>

                          UNAUDITED PRO FORMA CONDENSED COMBINED STATEMENT OF OPERATIONS
                                   FOR THE NINE MONTHS ENDED SEPTEMBER 30, 1999
                                                  (IN THOUSANDS)
<CAPTION>


                                                    BFI           ADJUSTMENTS          OTHER
                               STERICYCLE      MEDICAL WASTE       FOR PRIOR         PRO FORMA
                               HISTORICAL       HISTORICAL       ACQUISITIONS       ADJUSTMENTS       PRO FORMA
                               ----------       ----------       ------------       -----------       ---------
                                (NOTE 1)         (NOTE 2)          (NOTE 3)          (NOTE 4)

<S>                           <C>               <C>              <C>                <C>             <C>
Revenues..................... $    74,285       $   152,266      $     2,887        $        --     $    229,438
Cost of revenues.............     (48,998)          (99,831)          (2,137)             4,842 (a)     (146,124)
Selling, general and
   administrative expense....     (15,541)           (8,824)            (525)            (5,564)(b)      (30,454)
Special (charges) credit.....          --               469             (178)              (480)(c)         (189)
                              -----------       -----------      ------------       -----------     ------------
Operating income.............       9,746            44,080               47             (1,202)          52,671
Interest income..............         576                --               --                 --              576
Interest expense.............        (689)               --               --            (27,632)(d)      (28,321)
Other income.................         404                --               --                 --              404
                              -----------       -----------      -----------        -----------     ------------
Income before income taxes...      10,037            44,080               47            (28,834)          25,330
Income tax expense...........      (2,168)               --               --             (6,117)(e)       (8,285)
                              -----------       -----------      -----------        -----------     ------------
Net income...................       7,869            44,080               47            (34,951)          17,045
Dividends on convertible
   preferred stock...........          --                --               --             (1,898)(f)       (1,898)
                              -----------       -----------      -----------        -----------     ------------
Net income applicable to
   common shareholders....... $     7,869       $    44,080      $        47        $   (36,849)    $     15,147
                              ===========       ===========      ===========        ===========     ============
Basic earnings per shares.... $      0.56                --               --                 --     $      $1.08
                              ===========                                                           ============
Weighted average common
   shares outstanding........      14,073                --               --                 --     $       14,073
                              ===========                                                           ==============
Diluted earnings per shares.. $      0.54                --               --                 --     $        0.91
                              ===========                                                           =============
Weighted average common
   and common equivalent
   shares outstanding........      14,482                --               --              4,286 (g)         18,768
                              ===========                                           ===========     ==============
OTHER DATA:
Ratio of earnings to
   fixed charges.............                                                                               1.8x

     The accompanying notes are an integral part of this unaudited pro forma
                  condensed combined statement of operations.

</TABLE>

<PAGE>


                          NOTES TO UNAUDITED PRO FORMA
                   CONDENSED COMBINED STATEMENTS OF OPERATIONS

1.       STERICYCLE HISTORICAL

         The  historical  balances in this  column  represent  the  consolidated
results  of  operations  of  Stericycle  for each of the  indicated  periods  as
reported in the historical consolidated financial statements of Stericycle.

2.       BFI MEDICAL WASTE BUSINESS HISTORICAL

         The amounts  related to the BFI medical  waste  business in this column
represent the historical  revenues and direct  expenses of the BFI medical waste
business for its fiscal year ended  September 30, 1998 and the nine months ended
June 30, 1999 as  reported in the  historical  financial  statements  of the BFI
medical  waste  business.  The  historical  statements  of  revenues  and direct
expenses for the BFI medical waste business  exclude specific costs for selling,
general  and  administrative  efforts  which were  performed  by BFI on a shared
service basis.

3.       ADJUSTMENTS FOR PRIOR ACQUISITIONS

         The pro forma  adjustments in this column  reflect,  in accordance with
SEC  regulations,   the  unaudited  pro  forma  condensed  combined  results  of
operations for the year ended December 31, 1998 of Waste Systems, Inc., acquired
by Stericycle in October 1998, and Med-Tech Environmental  Limited,  acquired by
Stericycle  in December  1998 and the related  purchase  price  allocations  and
financing,  all to give effect to these  transactions as if each had occurred at
the beginning of the period presented. The results of operations of Med-Tech for
the year ended  December  31,  1998 have been  adjusted  to exclude  $803,000 of
direct acquisition costs, principally professional fees, incurred by Med-Tech as
a result of its sale to Stericycle.  This column also reflects the unaudited pro
forma condensed  combined results of operations for the year ended September 30,
1998,  and the nine  months  ended June 30,  1999 of Medical  Disposal  Systems,
acquired by BFI in April 1999, and the related purchase price allocations.

4.       OTHER PRO FORMA ADJUSTMENTS

         The pro forma adjustments in this column reflect the following:

          (a) A decrease in depreciation  expense relating to acquired  property
         and equipment based on estimated useful lives and appraised values. The
         preliminary appraised values of the acquired property and equipment are
         not less than the BFI  historical net book value.  The following  table
         indicates  the  components  of the  adjustments  by asset class and the
         amount by which current  estimates of average  useful lives differ from
         the average  remaining  lives in the  depreciation  accounts of BFI (in
         thousands, except lives in years):



<PAGE>

<TABLE>

                                                                                             DEPRECIATION EXPENSE
                                                                                             --------------------
                                                  PRELIMINARY   CURRENT       APPROXIMATE     YEAR     NINE MONTHS
                                                   ESTIMATED    AVERAGE       BFI AVERAGE     ENDED       ENDED
                                                 FAIR VALUE  ESTIMATED LIFE  REMAINING LIFE  12/31/98     9/30/99
                                                 ----------  --------------  --------------  --------     -------

<S>                                             <C>                                       <C>           <C>
Land.......................................     $      7,222       N/A            N/A     $      --     $     --
Buildings and improvements.................           19,782      28.2            21            701          526
Machinery and equipment....................           26,284       6.3             3          4,146        3,110
Office equipment and furniture.............            1,055         5             2            211          158
Construction in process....................              204       N/A            N/A            --           --
                                                ------------                              ---------     --------
                                                $     54,547                                  5,058        3,794
                                                ------------
BFI medical waste business depreciation expense (including Medical
     Disposal Systems)..........................................................             12,361        8,982
                                                                                          ---------     --------
Decrease in depreciation expense................................................              7,303        5,188
Less:  decrease allocated to selling, general and administrative expense........               (419)        (346)
                                                                                          ---------     --------
Decrease in cost of revenues....................................................          $   6,884     $  4,842
                                                                                          =========     ========
</TABLE>

                  The decrease in  depreciation  expense is due to a decrease in
         the fair value of the acquired  assets compared to their net book value
         and our belief  that the assets  acquired  will have an average  useful
         life  longer  than that  originally  determined  by BFI.  The  expected
         remaining  useful  lives  added to the  current  age of the  assets  is
         consistent  with the  useful  lives  Stericycle  assigns  to its  other
         similar assets when acquired.

         (b) An increase in amortization expense relating to acquired intangible
         assets and  goodwill  based on  estimated  lives,  net of a decrease in
         depreciation   expense  as   computed   in  Note  4(a)  above  and  the
         reclassification  of interest  expense  which has been  included in the
         historical  selling,  general  and  administrative  expense  of the BFI
         medical waste business,  on capital leases which are being assumed,  as
         follows (in thousands, except estimated lives in years):

<TABLE>

                                                                                         AMORTIZATION EXPENSE
                                                                                         --------------------
                                                PRELIMINARY         CURRENT           YEAR           NINE MONTHS
                                                 ESTIMATED         ESTIMATED          ENDED             ENDED
                                                FAIR VALUE       AVERAGE LIFE       12/31/98           9/30/99
                                                ----------       ------------       --------           -------

<S>                                         <C>                       <C>           <C>              <C>
Non-compete agreement................       $       5,300              5            $   1,060        $     795
Employee work force..................               2,870              3                  957              718
Goodwill.............................             358,315             40                8,958            6,718
                                                                                    ---------        ---------
                                                                                       10,975            8,231

BFI medical waste business amortization expense (including Medical
   Disposal Systems)............................................................        2,845            2,148
                                                                                    ---------        ---------
Increase in amortization expense................................................        8,130            6,083
Reclassification of interest expense on capital leases assumed..................         (158)            (173)
Decrease in depreciation expense................................................         (419)            (346)
                                                                                    ---------        ---------
Increase in selling, general, and administrative expense........................    $   7,553        $   5,564
                                                                                    =========        =========
</TABLE>

         (c)  The  elimination  of a gain  on the  sale  of  customer  lists  to
         Stericycle  of $480,000 for the nine months ended June 30, 1999,  which
         is included in the historical  financial  statements of the BFI medical
         waste business during this period.

         (d) A net increase in interest expense  reflecting the draw down of our
         credit  facility,  issuance  of the  notes,  amortization  of  deferred
         financing costs and a  reclassification  of interest  expense which has
         been included in the  historical  selling,  general and  administrative
         expenses of the BFI medical waste  business on capital leases which are
         being  assumed,  calculated as follows (in thousands,  except  interest
         rates):

<PAGE>

<TABLE>

                                                                                          INTEREST EXPENSE
                                                                                          ----------------
                                                                                      YEAR           NINE MONTHS
                                                  AMOUNT           INTEREST           ENDED             ENDED
                                                 BORROWED            RATE           12/31/98           9/30/99
                                                 --------            ----           --------           -------

Credit facility:
<S>                                         <C>                     <C>             <C>              <C>
   Term loan A............................  $      75,000           8.25%           $   6,188        $   4,641
   Term loan B............................        150,000           9.00%              13,500           10,125
Series A notes............................        125,000          12.375%             15,469           11,602
Amortization of deferred financing costs..                                              1,455            1,091
Reclassification of interest expense on
   capital leases assumed.................                                                158              173
                                                                                    ---------        ---------
Increase in interest expense..............                                          $  36,770        $  27,632
                                                                                    =========        =========
</TABLE>

         (e) Income tax expense  resulting  from a pro forma increase in taxable
         income  at  an  effective  rate  of  40%,  net  of  an  elimination  of
         alternative minimum taxes of $143 for the year ended December 31, 1998.

         (f)  Payment-in-kind  dividends  at an annual rate of 3.375% on the $75
         million liquidation value of our convertible preferred stock.

         (g)  Incremental  issuance of common shares on an as if converted basis
         for the convertible  preferred  shares at a conversion  price of $17.50
         per share.

5.  EXCLUDED  COSTS AND EXPECTED  COST SAVINGS (IN  THOUSANDS,  EXCEPT PER SHARE
DATA)

         The  statements of operations  data for the BFI medical waste  business
and the pro forma condensed  combined  statements of operations exclude indirect
selling,  general and administrative  expenses of the BFI medical waste business
of $13,298 for the nine months ended September 30, 1999 and $17,090 for the year
ended September 30, 1998. See note 3 to the Notes to Financial Statements of the
BFI Medical  Waste  Business.  The pro forma  condensed  combined  statements of
operations  also do not  reflect  the  effect  of the  expected  elimination  of
duplicative  personnel and facilities  costs related to both  Stericycle and the
BFI  medical  waste  business.  Based upon our  detailed  transition  plans,  we
estimate that if these  expected  eliminations  had been in effect on January 1,
1998,  they  would  have  had the  effect  of  reducing  transportation,  plant,
operations  and  facilities  costs  by  $9,581,  during  the nine  months  ended
September  30, 1999 and by $12,805,  during the year ended  December  31,  1998.
Adjusting  for  the  indirect  selling,   general  and  administrative  expenses
mentioned  above,  the  reduction  in  transportation,   plant,  operations  and
facilities  costs,  and the  related tax  effects of each,  would  result in net
income to common shareholders, basic earnings per share and diluted earnings per
share of $13,213,  $0.94, and $0.81 for the nine months ended September 30, 1999
and $9,554, $0.89 and $0.78 for the year ended December 31, 1998, respectively.



<PAGE>


                 SELECTED CONSOLIDATED FINANCIAL AND OTHER DATA

STERICYCLE

         You should read Stericycle's selected historical consolidated financial
data set forth below in conjunction with  "Management's  Discussion and Analysis
of Financial  Condition and Results of Operations," our  consolidated  financial
statements and the notes thereto,  and the other financial  information included
herein.  The  data  for the full  years  have  been  derived  from  our  audited
consolidated financial statements.  The data for the nine months ended September
30, 1998 and 1999 have been derived from our  unaudited  consolidated  financial
statements  and,  in the  opinion of our  management,  include  all  adjustments
(consisting  of  only  normal  recurring   adjustments)  necessary  for  a  fair
presentation  of the  results  of  operations  for  the  periods  and  financial
condition  as of the dates  presented.  The results of  operations  for the nine
months ended September 30, 1999 are not necessarily indicative of the results of
operations for the full year.

<TABLE>

                                                                                                       NINE MONTHS ENDED
                                                              YEAR ENDED DECEMBER 31,                    SEPTEMBER 30,
                                                              -------------------------------            -------------
                                                1994        1995       1996      1997      1998        1998       1999
                                                ----        ----       ----      ----      ----        ----       ----
                                                                               (IN THOUSANDS)
<S>                                           <C>        <C>         <C>       <C>       <C>        <C>         <C>
STATEMENTS OF OPERATIONS DATA:
Revenues.............................         $ 16,141   $  21,339   $ 24,542  $ 46,166  $  66,681  $  44,759   $  74,285
Cost of revenues.....................           13,922      17,478     19,423    34,109     45,328     30,492      48,998
Selling, general and administrative
  expenses...........................            7,927       8,137      7,556    10,671     14,929     10,151      15,541
                                              --------   ---------   --------  --------  ---------  ---------   ---------
Total costs and expenses.............           21,849      25,615     26,979    44,780     60,257     40,643      64,539
                                              --------   ---------   --------  --------  ---------  ---------   ---------
Income (loss) from operations........           (5,708)     (4,276)    (2,437)    1,386      6,424      4,116       9,746
Interest income (expense), net.......             (104)       (268)        48       190        (63)        66        (113)
Other income.........................               --          --         --        --         --         20         404
                                              --------   ---------   --------  --------  ---------  ---------   ---------
Income (loss) before income taxes....           (5,812)     (4,544)    (2,389)    1,576      6,361      4,202      10,037
Income tax expense...................               --          --         --       146        648        781       2,168
                                              --------   ---------   --------  --------  ---------  ---------   ---------
Net income (loss)....................           (5,812)     (4,544)    (2,389)    1,430      5,713      3,421       7,869
Less cumulative preferred dividends(1)          (4,481)         --        --        --         --          --          --
                                              --------   ---------   --------  --------  ---------  ---------   ---------
Income (loss) applicable to common stock      $(10,293)  $  (4,544)  $ (2,389) $  1,430   $  5,713   $  3,42    $   7,869
                                              ========   =========   ========  ========  =========  =========   =========

OTHER DATA:
Ratio of earnings to fixed charges(2)              --          --        --        1.9x       4.3x       3.9x        5.5x

                                                                AS OF DECEMBER 31,                       AS OF SEPTEMBER 30,
                                                                ------------------                       -------------------
                                                  1994       1995       1996      1997       1998        1998        1999
                                                  ----       ----       ----      ----       ----        ----        ----
                                                                               (IN THOUSANDS)
BALANCE SHEET DATA:
Cash and cash equivalents............         $  1,206   $     138   $ 11,950  $  5,374  $   1,283  $     775   $  16,017
Working capital......................            2,510         438     14,617     4,879      1,166      3,298      28,192
Property, plant and equipment, net...           11,633      10,228     12,007    11,241     23,100     12,043      22,435
Total assets.........................           27,809      23,491     55,155    61,226     97,755     68,183     128,728
Long-term debt (including current portion)       5,441       5,919      7,806     6,527     28,959      9,527       5,778
Convertible redeemable preferred stock(1)       62,909          --         --        --         --        --           --
Shareholders' equity (capital deficiency)      (45,363)     12,574     40,014    45,026     53,651     50,550     111,812

(1)       In  August   1995,   our  Board  of   Directors   adopted  a  plan  of
          recapitalization  which was approved by our  stockholders in September
          1995,  pursuant to which we  reclassified  our previously  outstanding
          convertible redeemable preferred stock as common stock. As part of the
          plan of recapitalization,  all conversion,  redemption and liquidation
          rights associated with the convertible redeemable preferred stock were
          terminated in exchange for the issuance of shares of common stock.

(2)       The  ratio of  earnings  to fixed  charges  is  computed  by  dividing
          earnings by fixed charges. For this purpose, "earnings" include income
          (loss)  before  income  taxes and fixed  charges  and "fixed  charges"
          include interest expense,  amortization of deferred financing fees and
          costs,  and a portion of rent  expense that is  representative  of the
          interest  factor in these  rentals.  For the years ended  December 31,
          1994,  1995,  and 1996,  earnings  were  insufficient  to cover  fixed
          charges by $4,093, $2,563, and $50, respectively.

</TABLE>

THE BFI MEDICAL WASTE BUSINESS

         You should  read the  selected  historical  financial  data for the BFI
medical  waste  business  set  forth  below in  conjunction  with  "Management's
Discussion  and Analysis of Financial  Condition and Results of  Operations--BFI
Medical Waste  Business," the financial  statements and the notes thereto of the
BFI medical waste business, and the other financial information included in this
prospectus.  The financial  statements of the BFI medical waste business are not

<PAGE>


intended to be a complete presentation of the assets and liabilities and results
of operations and cash flows of the BFI medical waste  business.  Rather,  these
financial  statements  were prepared for the purpose of complying with the rules
and  regulations  of the SEC.  In  particular,  the actual  historical  selling,
general and administrative expenses for the BFI medical waste business cannot be
determined with precision from BFI's  accounting  records.  Only that portion of
the selling,  general and administrative  expenses directly  attributable to the
BFI medical waste  business is reflected in the  historical  financial  data for
that business  included in this prospectus.  No portion of the selling,  general
and administrative  expenses associated with the employees and operations of BFI
that were  employed in multiple  segments of BFI's  overall  business  have been
included in the historical results of the BFI medical waste business. Therefore,
the  selling,  general and  administrative  expenses  of the BFI  medical  waste
business  are not  comparable  to  those of  Stericycle.  See Note 3 of Notes to
Financial Statements of Browning-Ferris Industries, Inc. Medical Waste Business.

         In  addition,  in  connection  with the  installation  of new  computer
systems in 1998,  the manner of  accounting  for  certain  selling,  general and
administrative  costs  was  changed.  Beginning  in  January  1998,  some  costs
previously  identifiable directly with medical waste operations were pooled with
similar costs related to BFI's other business  operations by marketplace so that
only the selling, general and administrative costs related to medical waste-only
geographic  locations  could be  specifically  identified and charged to the BFI
medical waste business in fiscal year 1998 and subsequent financial  statements.
Therefore,  the  financial  data  of the  BFI  medical  waste  business  are not
comparable between the fiscal year ended September 30, 1998 and prior years.

         The data for the  fiscal  years  have  been  derived  from the  audited
financial  statements of the BFI medical waste  business.  The data for the nine
months  ended  June 30,  1998 and 1999  have  been  derived  from the  unaudited
financial  statements  of  the  BFI  medical  waste  business.  The  results  of
operations for the nine months ended June 30, 1999 are not necessary  indicative
of the results of operations for the full fiscal year.

<TABLE>


                                                                                                 NINE MONTHS ENDED
                                                  FISCAL YEAR ENDED SEPTEMBER 30,                    JUNE 30,
                                                  -------------------------------                    --------
                                               1996            1997           1998             1998            1999
                                               ----            ----           ----             ----            ----
                                                                         (IN THOUSANDS)
<S>                                        <C>              <C>            <C>             <C>             <C>
STATEMENT OF REVENUES IN EXCESS
OF DIRECT EXPENSES DATA:
Revenues...........................        $     199,886    $   199,060    $    198,222    $     148,837   $    152,266
Cost of revenues...................              140,482        138,000         132,629           99,406         99,831
                                           -------------    -----------    ------------    -------------   ------------
Gross profit.......................               59,404         61,060          65,593           49,431         52,435
Direct selling, general
  and administrative
  expenses.........................               22,468         20,948          13,273            8,937          8,824
Special charges
  (credits)(1).....................                9,236          4,500             257              257           (469)
                                           -------------    -----------    ------------    -------------   ------------
Revenues in excess of direct
   expenses........................        $      27,700    $    35,612    $     52,063    $      40,237   $     44,080
                                           =============    ===========    ============    =============   ============
OTHER DATA:
Depreciation and amortization......        $      20,098    $    17,327    $     14,972    $      11,525   $     11,010
Capital expenditures...............               10,794          4,149           6,847            5,790          6,456

</TABLE>
<TABLE>

                                                                              AS OF SEPTEMBER 30,          AS OF JUNE 30,
                                                                              -------------------
                                                                            1997              1998              1999
                                                                            ----              ----              ----
                                                                                           (IN THOUSANDS)
<S>                                                                   <C>              <C>               <C>
BALANCE SHEET DATA:
Cash and cash equivalents...................................          $          --    $           --    $           --
Working capital.............................................                 13,132            14,820            13,984
Total directly identifiable assets..........................                129,503           125,632           134,861
Long-term debt, including current portion...................                  1,766             3,015             5,132
Total directly identifiable assets in
  excess of directly identifiable liabilities...............                121,719           117,967           125,593

(1)  See Note 11 of Notes to Financial Statements of Browning-Ferris Industries, Inc. Medical Waste Business.

</TABLE>

<PAGE>


           MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
                            AND RESULTS OF OPERATIONS

STERICYCLE

BACKGROUND

         Stericycle derives its revenues from services to two principal types of
customers:  (i) small account customers,  including outpatient clinics,  medical
and dental offices and long-term and sub-acute care  facilities;  and (ii) large
account  customers,   including   hospitals,   blood  banks  and  pharmaceutical
manufacturers.  Substantially  all of our  services  are  provided  pursuant  to
long-term customer contracts specifying either scheduled or on-call services, or
both.  Contracts with small accounts are generally two to three years in length,
usually can be  terminated  only for cause,  generally  provide for annual price
increases  and renew  automatically  unless the  customer  notifies  us prior to
expiration of the contract.  Contracts with hospitals and other large  accounts,
which  generally run for one to five years,  typically  include price  escalator
provisions which allow for price increases, generally tied to an inflation index
or to a fixed percentage. As of June 30, 1999, we served over 85,000 customers.

         In addition to various wholly owned domestic  subsidiaries,  we own 55%
of 3CI Complete  Compliance  Corporation and have international  investments and
operations,  including: Med-Tech Environmental Limited, a Canadian medical waste
services  subsidiary;  Medam S.A.  de C.V.,  a joint  venture  company in Mexico
formed by us and others for the collection,  treatment and disposal of regulated
medical  waste in the Mexico  City  metropolitan  market;  and a  licensing  and
equipment  sales  agreement  for our ETD  technology  in Brazil  with  Companhia
Auxiliar de Viacao e Obrar.

         We recognize  revenue when the treatment of the regulated medical waste
is  completed  on-site  or the waste is  shipped  off-site  for  processing  and
disposal.  For waste shipped  off-site,  all associated  costs are recognized at
time of  shipment.  Revenue  and costs on  contracts  to supply our  proprietary
treatment  equipment are accounted for by the  percentage of completion  method,
whereby income is recognized  based on the estimated  stage of completion of the
individual contract.

         We currently  expense as incurred all  permitting,  design and start-up
costs  associated  with  our  facilities.  We elect to  expense  rather  than to
capitalize  the costs of  obtaining  permits  and  approvals  for each  proposed
facility  regardless  of whether we are  ultimately  successful in obtaining the
desired  permits  and  approvals  and  developing  the  facility.  We  currently
recognize  as a current  expense  all  legal  fees and other  costs  related  to
obtaining  and  maintaining  permits and  approvals.  In addition,  we currently
expense all costs related to research and development as incurred.

         Our cost of revenues  includes all costs of treatment,  transportation,
disposal and  supplies,  depreciation  of operating  assets,  and some  indirect
overhead  costs  such  as  operations   managers.   Our  selling,   general  and
administrative  expenses  are  comprised  of  accounting,  information  systems,
selling,  district and area management offices and corporate headquarters costs.
In addition,  we include  amortization  of intangible  assets,  such as goodwill
resulting from acquisitions, in selling, general and administrative expenses.

         We do not own or operate any landfills or waste storage facilities.  We
dispose of any waste  remaining  after  completion of the  treatment  process at
facilities of unrelated parties.  Accordingly,  the calculation of our operating
costs is not  subject  to the  estimates  inherently  associated  with  landfill
accounting.

NINE MONTHS ENDED SEPTEMBER 30, 1999 COMPARED TO THE NINE MONTHS ENDED SEPTEMBER
30, 1998

         Revenues.  Revenues  increased  $29,526,000,  or 66.0%,  to $74,285,000
during the nine months  ended  September  30, 1999 from  $44,759,000  during the
comparable period in 1998 as we continued to implement our strategy of acquiring
selected  businesses  and  focusing  on sales  to  higher-margin  small  account
customers while simultaneously paring specified  higher-revenue but lower-margin
accounts  with large  account  customers.  Revenues  generated  from the sale of
machinery  internationally  was  $5,161,000  during the nine month  period ended
September  30, 1999 as compared  to  $3,802,000  during the same period in 1998.

<PAGE>


During the nine months ended  September 30, 1999,  acquisitions  made during the
last 12 months contributed approximately $24,846,000 to the increase in revenues
as compared to the prior year.

         Cost of Revenues. Cost of revenues increased $18,506,000,  or 60.7%, to
$48,998,000  during the nine months ended  September  30, 1999 from  $30,492,000
during the  comparable  period in 1998.  This  increase was primarily due to the
substantial increase in revenues during 1999 compared to the same period in 1998
and an increase in the cost of equipment sold internationally.  The gross margin
percentage  increased to 34.0% during the nine months ended  September  30, 1999
from 31.9% during the  comparable  period in 1998 due to further  integration of
new acquisitions into the existing infrastructure, lower relative costs relating
to the changing mix of small account versus large account  customers,  increased
utilization  of  treatment  capacity  and an  increase  in  sales  of  equipment
internationally.

         Selling,  General and  Administrative  Expenses.  Selling,  general and
administrative  expenses  increased  to  $15,541,000  for the nine months  ended
September  30, 1999 from  $10,151,000  for the  comparable  period in 1998.  The
increase was largely the result of increases in selling and  marketing  expenses
and  goodwill  amortization  as a result of our  acquisitions,  expansion of the
sales  network,  and  increased  administrative  expenses  related to the higher
volume. Selling, general and administrative expenses as a percentage of revenues
decreased to 20.9% during the nine months  ended  September  30, 1999 from 22.7%
during the comparable period in 1998. Excluding amortization,  selling,  general
and  administrative  expenses as a percent of revenue  decreased to 18.5% during
the nine months ended September 30, 1999 from 20.4% during the comparable period
in 1998.

         Interest  Expense and Interest Income.  Interest  expense  increased to
$689,000  during the nine months ended  September 30, 1999, from $242,000 during
the  comparable  period in 1998,  primarily  due to increased  interest  expense
related to borrowings associated with acquisitions completed prior to our public
offering in February 1999. Interest income also increased to $576,000 during the
nine months ended September 30, 1999, from $308,000 during the comparable period
in 1998,  primarily due to the investment of proceeds from the public  offering,
offset by lower cash balances prior to the stock issuance.

         Other  Income and Expense.  A one-time  gain of $656,000 on the sale of
routes by 3CI Complete Compliance  Corporation of which Waste Systems, Inc. (our
wholly owned  subsidiary)  is majority  shareholder,  was partially  offset by a
one-time  non-cash  expense of  $192,000  for  warrants  issued with bridge loan
borrowings in December 1998 and January 1999. See "Certain Transactions."

         Income Tax Expense.  The estimated  effective tax rate of approximately
21.6% for the nine months ended  September  30, 1999  reflects  federal  taxable
income  expected in excess of Internal  Revenue Code Section 382  limitations on
the annual  utilization of our net operating loss  carryforward and state income
taxes in states where we have no offsetting net operating losses.

YEAR ENDED DECEMBER 31, 1998 COMPARED TO YEAR ENDED DECEMBER 31, 1997

         Revenues.  Revenues  increased  $20,515,000,  or 44.4%,  to $66,681,000
during 1998 from  $46,166,000  during 1997 as we  continued to focus on sales to
higher margin, small account customers,  while simultaneously  paring some lower
margin  accounts  with large  account  customers.  The  increase  also  reflects
$5,952,000  in revenues  from the sale of equipment  to  Companhia  Auxiliar and
Medam.  During 1998,  acquisitions  completed since January 1, 1997  contributed
approximately $13,103,000 to the increase in revenues from 1997. Excluding these
incremental  revenues from acquisitions,  revenues increased from $46,166,000 to
$53,578,000 or 16.1%.  For the year,  internal  revenue growth for small account
customers  increased 14.8% while revenues from large account customers decreased
by 7.2%.

         Cost of Revenues. Cost of revenues increased $11,219,000,  or 32.9%, to
$45,328,000  during  1998,  from  $34,109,000  during  1997.  The  increase  was
primarily  due to the  substantial  increase in revenues  during 1998 and to the
cost of  equipment  supplied to Companhia  Auxiliar and Medam.  The gross margin
percentage  increased to 32.0% during 1998 from 26.1% during 1997 as a result of
the  sale  of  equipment   internationally,   the  further  integration  of  new
acquisitions into our existing  infrastructure,  improved profitability relating
to the changing mix of small account and large  account  customers and increased
utilization of existing treatment capacity.

         Selling,  General and  Administrative  Expenses.  Selling,  general and
administrative  expenses  increased to $14,929,000  during 1998 from $10,671,000
during  1997 due to our  continued  progress  in  strengthening  our  sales  and

<PAGE>


administrative  organizations  and due to the  increase in the  amortization  of
goodwill and other  incremental  costs  associated with  acquisitions.  Selling,
general and  administrative  expenses as a percentage  of revenues  decreased to
22.4% during 1998 from 23.1% during 1997.  Amortization of goodwill increased to
$1,505,000  during 1998 from  $1,042,000 in 1997,  and  excluding  amortization,
selling,  general and administrative expenses as a percent of revenues decreased
to 20.1% in 1998 from 20.9% in 1997.

         Interest  Expense and Interest Income.  Interest  expense  increased to
$777,000 during 1998, from $428,000 during 1997,  primarily due to borrowings on
our revolving line of credit  partially  offset by the repayment of certain debt
issued  in  connection  with  one  of our  acquisitions.  Interest  income  also
increased to $714,000  during 1998 from $618,000  during 1997,  primarily due to
interest  income on the  Med-Tech  subordinated  debt  acquired in October  1998
partially offset by lower interest income on invested cash balances.

         Income Tax Expense.  The estimated  effective tax rate of approximately
10.2% for 1998 reflects the  utilization of our net operating  losses for income
tax purposes, offset by alternative minimum tax and state income taxes in states
where we have no offsetting net operating losses.

YEAR ENDED DECEMBER 31, 1997 COMPARED TO YEAR ENDED DECEMBER 31, 1996

         Revenues.  Revenues  increased  $21,624,000,  or 88.1%,  to $46,166,000
during  1997 from  $24,542,000  during 1996 as we  continued  to  implement  our
strategy  of  focusing  on  higher   margin  small   account   customers   while
simultaneously  paring  certain  higher  revenue but lower margin  accounts with
large  account  customers.  This  increase also reflects the inclusion of a full
year's revenues from the acquisition of a major portion of the regulated medical
waste business of Waste Management,  Inc., which was completed in December 1996,
eight months of revenues from the  Environmental  Control Co., Inc.  acquisition
completed in May 1997, and a partial year's  revenues from various other smaller
acquisitions.   During  1997,  acquisitions  completed  since  January  1,  1996
contributed  approximately  $20,975,000  to the increase in revenues  from 1996.
Excluding these incremental revenues from acquisitions,  revenues increased from
$24,542,000  in 1996 to  $25,191,000  in 1997, or 2.6%.  For the year,  internal
revenue growth for small account customers was 13.0%,  while revenues from large
account customers decreased by 4.0%.

         Cost of Revenues. Cost of revenues increased $14,686,000,  or 75.6%, to
$34,109,000  during 1997 from $19,423,000 during 1996. The principal reasons for
the increase  were higher  transportation,  treatment  and  disposal  costs as a
result of the higher volume  attributable  to our  acquisitions  and integration
expenses  related to our expansion into new geographic  service areas. The gross
margin percentage  increased to 26.1% during 1997 from 20.9% during 1996, due to
the continuing shift to small account customers and increased utilization of our
treatment capacity.

         Selling,  General and  Administrative  Expenses.  Selling,  general and
administrative  expenses  increased to $10,671,000  during 1997 from  $7,556,000
during 1996.  The increase was largely due to increases in selling and marketing
expenses as a result of our acquisitions and expansion of our sales network, and
increased  administrative costs related to the higher volume.  Selling,  general
and  administrative  expenses as a  percentage  of revenues  decreased  to 23.1%
during  1997  from  30.8%   during   1996  due  to  improved   leverage  of  the
administrative  structure  versus the sales  growth.  Amortization  of  goodwill
increased  to  $1,042,000  during  1997 from  $390,000  in 1996  and,  excluding
amortization,  selling,  general  and  administrative  expenses  as a percent of
revenues decreased to 20.9% in 1997 from 29.2% in 1996.

         Interest  Expense and Interest Income.  Interest  expense  increased to
$428,000  during 1997 from  $373,000  during 1996.  This  increase was primarily
attributable  to  higher  indebtedness  related  to  the  Waste  Management  and
Environmental Control acquisitions. Interest income increased to $618,000 during
1997 from  $421,000  during 1996 due to  interest  earned on the  invested  cash
proceeds from our initial public offering in August 1996.

         Income Tax Expense.  The estimated  effective tax rate of 9.3% for 1997
reflects the  utilization  of our net operating  losses for income tax purposes,
offset by alternative minimum tax and state income taxes in states where we have
no offsetting net operating losses. We did not pay any income taxes in 1996.


<PAGE>


BFI MEDICAL WASTE BUSINESS

         The  following  discussion  of the  financial  condition and results of
operations of the BFI medical waste business should be read in conjunction  with
the BFI Medical Waste Business  Statements of Directly  Identifiable  Assets and
Liabilities  and  Statements  of Revenues and Direct  Expenses and related notes
included elsewhere in this prospectus.

BACKGROUND

         On November 12, 1999,  we acquired from Allied all of the medical waste
operations  of BFI in the United  States,  Canada and Puerto Rico.  The purchase
price for these  operations was $410.5 million in cash,  subject to post-closing
adjustment. Allied purchased BFI on July 30, 1999.

         The BFI medical  waste  business  provides  medical  waste  collection,
transportation,   treatment  and  disposal  services  to  hospitals,  healthcare
providers and other small quantity  generators in the United States,  Canada and
Puerto  Rico.  Until  November 12, 1999,  the BFI medical  waste  business was a
service line of BFI.

         BFI's operating  organization  was aligned along  functional lines into
five  groups:  sales  and  marketing,  collection,   post-collection,   business
development and business  analysis.  As a result,  BFI did not maintain separate
books and records for the  medical  waste  operations  other than  service  line
revenues and direct operating costs. Therefore, the financial statements include
only those costs that are directly  attributable to the medical waste operations
and that are separately  identifiable in BFI's accounting  records.  Significant
additional  costs were  incurred by BFI on a shared  service basis and have been
excluded  because these costs have not been allocated to the various BFI service
lines. As a result,  the accompanying  financial  statements are not intended to
be, and are not, a complete presentation of the assets,  liabilities and results
of  operations  of the BFI medical  waste  business.  Rather,  the  accompanying
financial  statements  were prepared for the purpose of complying with rules and
regulations of the SEC, which  indicate that specific  financial  statements are
required for the BFI medical waste business. All significant  transactions among
units of the BFI medical  waste  business  have been  eliminated.  For a further
description  of the  bases of the  financial  statements,  see the  notes to the
financial statements of the BFI medical waste business.

         The BFI medical  waste  business  derives its revenues from services to
two  principal  types of  customers:  (i)  small  account  customers,  including
outpatient clinics,  medical and dental offices, and long-term and subacute care
facilities;  and (ii) large account customers,  including hospitals, blood banks
and pharmaceutical  manufacturers.  Substantially all of the services of the BFI
medical waste  business are provided  pursuant to long-term  customer  contracts
specifying either scheduled or on-call services,  or both.  Contracts with small
accounts are generally  two to three years in length,  usually can be terminated
only for  cause,  generally  provide  for  annual  price  increases  and have an
automatic  renewal provision which operates unless the customer notifies the BFI
medical waste  business  prior to completion  of the  contract.  Contracts  with
hospitals and other large  accounts,  which generally run for one to five years,
typically  include price escalator  provisions  which allow for price increases,
generally tied to an inflation  index or to a fixed  percentage.  As of June 30,
1999, the BFI medical waste business served over 150,000 customers.

         Direct selling,  general and administrative expense and special charges
(credits)  include  only those costs which are  incurred  solely for the medical
waste  operations and are  separately  identified in BFI's  accounting  records.
These costs include payroll costs for sales and  administrative  employees whose
function  is to solely  support  the  medical  waste  business  and  general and
administrative  costs of medical waste only facilities.  Further,  in connection
with the installation of new computer systems in January 1998,  certain selling,
general and  administrative  costs previously  identifiable  directly to medical
waste  operations  through  December  1997 were no longer  accounted for in this
manner.  Beginning in January  1998,  these costs were pooled with similar costs
related to BFI's  other  business  operations  by  marketplace  so that only the
selling,  general  and  administrative  costs  related to  geographic  locations
devoted  exclusively  to medical  waste  could be  specifically  identified  and
charged  to  medical  waste  in  fiscal  year  1998  and  subsequent   financial
statements.  For these reasons, the selling, general and administrative costs of
the BFI medical waste business are not comparable to those of Stericycle and are
not comparable between the fiscal year ended September 30, 1998 and prior fiscal
years.


<PAGE>


         For processing  activities,  the BFI medical waste business  recognizes
revenue when the  treatment of the  regulated  medical waste is completed at its
facilities or the waste is shipped  off-site for  processing  and disposal.  For
waste shipped off-site, all associated costs are recognized at time of shipment.
For collection  activities,  the BFI medical waste business  recognizes  revenue
when regulated medical waste is collected from its customers.

         The BFI medical  waste  business  expenses  costs  associated  with the
operation  of new plants  prior to the  commencement  of services to  customers.
Initial  plant permit costs are  capitalized  as part of  property,  plant,  and
equipment and are amortized using the straight-line method over the useful lives
up to 25 years. All ongoing permit costs are expensed.

         BFI's cost of  revenues  does not  include  depreciation  of  operating
assets.

         The BFI medical waste business does not own or operate any landfills or
waste storage facilities. It disposes of any waste remaining after completion of
the  treatment  process at  facilities of unrelated  parties.  Accordingly,  the
calculation  of its operating  costs is not subject to the estimates  inherently
associated with landfill accounting.

NINE MONTHS ENDED JUNE 30, 1999 COMPARED TO NINE MONTHS ENDED JUNE 30, 1998

         Revenues.  Revenues  for the  nine  months  ended  June 30,  1999  were
$152,266,000  representing  an increase of  $3,429,000  or 2.3% over revenues of
$148,837,000  for the nine months  ended June 30,  1998.  During the nine months
ended June 30, 1999, the BFI medical waste business  completed six  acquisitions
which contributed approximately $3,000,000 in revenue for the nine-month period.
The  estimated  annual  revenues  for the six  acquisitions  were  approximately
$9,800,000.  The  remaining  increase in revenues  is  attributable  to internal
growth in other marketplaces.

         Direct Operating Costs. Direct operating costs increased $1,108,000, or
1.2%, to  $91,568,000  for the nine months ended June 30, 1999 from  $90,460,000
for  the  nine  months  ended  June  30,  1998,  primarily  as a  result  of the
acquisition  transactions completed during the period.  However, as a percentage
of revenues,  the direct gross operating  margin  increased from 39.2% to 39.9%,
primarily as a result of the  continuing  implementation  of  additional  safety
training,  which reduced costs  associated with accidents and injuries,  and the
consolidation  of  certain  small  collection   operations  into  nearby  larger
collection  facilities.  Including the depreciation of operating  assets,  gross
margin  increased to 34.4% for the nine months ended June 30, 1999 from 33.2% in
the prior year period.

         Selling,  General and  Administrative  Expenses.  Selling,  general and
administrative  expenses  decreased  $281,000 to $6,077,000  for the nine months
ended June 30, 1999 from $6,358,000 for the nine months ended June 30, 1998. The
nine months ended June 30, 1998 includes the January 1, 1998  conversion date of
BFI to its SAP management software system.  Therefore,  for three months of this
nine-month  period,  the BFI  medical  waste  business  was  charged  for shared
selling,  general and administrative costs. After the conversion,  only directly
related  selling,  general  and  administrative  costs  were  charged to the BFI
medical waste business.

         Depreciation  and   Amortization   Expense.   Total   depreciation  and
amortization expense decreased $515,000 to $11,010,000 for the nine months ended
June 30, 1999 from  $11,525,000 for the nine months ended June 30, 1998 and as a
percentage  of  revenues,  decreased  from  7.7% to 7.2%.  These  decreases  are
primarily due to assets  becoming  fully  depreciated in 1998, and longer useful
lives of assets  acquired  in the nine  months  ended June 30,  1999 than in the
prior period.

         Special Charges (Credits).  During the nine months ended June 30, 1999,
the BFI medical waste business  recorded special credits of $469,000 relating to
a gain on the sale of customer lists totaling  $480,000,  offset by a write-down
of a non-core business asset totaling $11,000. During the nine months ended June
30, 1998, the BFI medical waste business  recorded  special  charges of $257,000
relating to the write-down of a non-core business asset.


<PAGE>


YEAR ENDED SEPTEMBER 30, 1998 COMPARED TO YEAR ENDED SEPTEMBER 30, 1997

         Revenues.   Revenues   remained   relatively   flat  between   periods,
$198,222,000  for the year ended September 30, 1998 compared to $199,060,000 for
the year ended  September  30, 1997.  In December,  1997,  the BFI medical waste
business divested its Arizona collection and processing operations  representing
approximately  $3,000,000 or 1.5% of revenues in fiscal 1997. However,  internal
growth and acquisitions in other markets largely offset the reduction in revenue
resulting from the Arizona divestiture. The BFI medical waste business completed
three acquisitions  during the year ended September 30, 1998, which collectively
contributed approximately $1,000,000 in revenues.

         Direct Operating Costs. Direct operating costs decreased $3,060,000, or
2.5%, to $121,096,000  for the year ended September 30, 1998, from  $124,156,000
during the year ended  September  30,  1997.  As a percentage  of revenues,  the
direct gross operating  margin  increased from 37.6% to 38.9%,  primarily due to
the implementation of cost control measures at all of the processing facilities,
and a reduction of accident and injury costs due to continuing implementation of
additional  safety training.  Costs were also reduced by $800,000 as a result of
the divestiture of the Arizona operation.

         Selling,  General and  Administrative  Expenses.  Selling,  general and
administrative  expenses,  as reported on the  Statements of Revenues and Direct
Expenses,  decreased  $7,631,000,  or 43.7%,  to  $9,834,000  for the year ended
September 30, 1998, from  $17,465,000  during the year ended September 30, 1997.
As indicated  elsewhere herein,  selling,  general and  administrative  expenses
include  only those  expenses  which are incurred  solely for the medical  waste
operations  and are  separately  identified  in  BFI's  accounting  records.  In
connection with the installation of a new general ledger system in January 1998,
certain  selling,  general  and  administrative  expenses  assigned  directly to
medical waste  operations  through December 1997 were no longer accounted for in
this manner.  Beginning in January 1998, these expenses were pooled with similar
expenses related to BFI's other business  operations by marketplace so that only
the selling,  general and administrative  expenses related to medical waste only
geographic  locations  could be  specifically  charged to the BFI medical  waste
business in fiscal year 1998 and  subsequent  periods.  Also,  in May 1998,  BFI
announced that its corporate office and marketplace level offices, which provide
shared selling,  general and  administrative  expenses,  had undertaken  various
cost-cutting  measures.  Further,  the year ended  September  30, 1997  included
$1,500,000 in expenses  related to fines paid for  violations of the Clean Water
Act.

         Depreciation  and   Amortization   Expense.   Total   depreciation  and
amortization  expense  decreased  $2,355,000,  to $14,972,000 for the year ended
September 30, 1998,  from  $17,327,000  during the year ended September 30, 1997
and as a percentage of revenues  decreased  from 8.7% to 7.6%.  These  decreases
were due primarily to the divestiture of the Arizona operation in December 1997,
and due to a  significant  number of medical  waste  containers  becoming  fully
depreciated.

         Special Charges.  In the year ended September 30, 1998, the BFI medical
waste business  recorded special charges of $257,000  relating to the write-down
of one non-core  business asset. In 1997 the BFI medical waste business recorded
special  charges of $4,500,000  relating to the closure of an incinerator at the
Bronx, New York facility.

YEAR ENDED SEPTEMBER 30, 1997 COMPARED TO YEAR ENDED SEPTEMBER 30, 1996

         Revenues. Revenues remained relatively flat between periods, decreasing
slightly to  $199,060,000  for the year ended  September  30,  1997  compared to
$199,886,000  for the year ended  September  30,  1996.  The BFI  medical  waste
business  completed one  acquisition  during the year ended  September 30, 1997,
which  contributed  approximately  $300,000  in  revenues.  The  closure  of  an
incinerator at the Bronx, New York facility in July 1997 resulted in a reduction
in revenues of approximately $500,000.

         Direct Operating Costs. Direct operating costs remained relatively flat
at   $124,156,000   during  the  year  ended  September  30,  1997  compared  to
$123,801,000 for the year ended September 30, 1996. As a percentage of revenues,
the direct gross operating margin decreased from 38.1% to 37.6%. Increased costs
for repair and maintenance of equipment of approximately  $604,000 were incurred
in  the  Arizona  operations  prior  to its  divestiture.  However,  these  cost
increases  were offset by cost reduction  programs  instituted in the year ended


<PAGE>

September 30, 1997. These cost reduction programs include centralized purchasing
of materials and supplies,  re-routing of collection operations, and a balancing
of the volumes of waste processed among the various processing facilities.

         Selling,  General and  Administrative  Expenses.  Selling,  general and
administrative expenses decreased $1,586,000 during the year ended September 30,
1997 to  $17,465,000  compared to $19,051,000  for the year ended  September 30,
1996. This decrease was due primarily to the internal  reorganization within BFI
of the corporate sales,  marketing,  and accounting service groups during fiscal
1997.  Selling,  general and  administrative  expenses include specific directly
charged shared services  provided by BFI's corporate and district level offices.
Further,  the year ended September 30, 1997 included $1,500,000 in costs related
to fines paid for violations of the Clean Water Act.

         Depreciation  and   Amortization   Expense.   Total   depreciation  and
amortization   expense   decreased   $2,771,000  to  $17,327,000  in  1997  from
$20,098,000  in 1996 and as a  percentage  of revenues  decreased  from 10.1% to
8.7%.  These  decreases  were  primarily due to a significant  number of medical
waste containers  becoming fully  depreciated,  due primarily to a change in the
useful life of medical  waste  containers.  This change  retired the  containers
which had been in service in excess of three years, and accordingly, reduced the
following year's depreciation and amortization. These decreases were also due in
part to the  curtailment  of  acquisitions  in that  only  one  acquisition  was
completed during the year ended September 30, 1997, adding less than $200,000 in
assets.  Additionally,  capital expenditures decreased due to BFI's reduction of
capital spending.

         Special  Charges.  In 1997  the BFI  medical  waste  business  recorded
special  charges of $4,500,000  relating to the closure of an incinerator at the
Bronx,  New York  facility.  In 1996,  the BFI medical waste  business  recorded
$9,236,000  in special  charges  related to the future  closures  of  processing
facilities at Rancho Cordova, California,  Washington, D.C., Bartow, Florida and
Vancouver,  Washington.  Waste  processed at these  locations was  redirected to
other  facilities of the BFI medical waste business after those  facilities were
closed. Collection operations continued at each of these locations.

LIQUIDITY AND CAPITAL RESOURCES

         At September 30, 1999, our working capital was $28,192,000  compared to
working  capital of  $1,166,000  at December 31,  1998.  The increase in working
capital was primarily due to higher cash balances and lower current  liabilities
as a result of the public offering completed in February 1999.

         Net cash provided by operating  activities  was  $5,834,000  during the
nine months ended  September 30, 1999 compared to $1,346,000  for the comparable
period  in  1998.  This  increase  primarily  reflects  higher  net  income  and
depreciation and amortization expense, offset by changes in working capital.

         Net  cash  used in  investing  activities  for the  nine  months  ended
September 30, 1999 was  $15,074,000  compared to $8,955,000  for the  comparable
period in 1998.  The change is  primarily  attributable  to the increase in cash
used for funding  acquisitions and international  investments  completed in 1999
and an increase in capital  expenditures.  Capital  expenditures were $2,367,000
for the nine months ended September 30, 1999 compared to $1,825,000 for the same
period in 1998.  The  increase in capital  spending is a result of  improvements
made to existing treatment facilities, the movement of the corporate office to a
new facility and facility  improvements made by our  subsidiaries,  3CI Complete
Compliance  Corporation  and  Med-Tech   Environmental  Limited.   Payments  for
acquisitions and international  investments  amounted to $11,667,000  during the
nine months ended September 30, 1999.

         In order to  finance  the BFI  acquisition,  we  conducted  a series of
financings in addition to the sale of the series A notes. As a result,  we are a
substantially  leveraged  company.  See  "Risk  Factors--Substantial  Leverage,"
"--Additional  Borrowings  Available,"  and "--Ability to Service Debt." We also
recorded a  substantial  increase in  goodwill  and other  intangible  assets in
connection  with the BFI  acquisition,  and we will have a  corresponding  large
increase in amortization expense.

         We have a credit agreement with a group of lenders that provides for an
aggregate of up to $275.0 million in senior secured financing comprised of (i) a
six-year  term loan A amortizing  facility of $75.0  million,  (ii) a seven-year
term loan B amortizing  facility of $150.0  million,  and (iii) a $50.0  million
revolving  loan  facility.  Stericycle  has drawn the $225.0  million  term loan
facilities  to  finance  the  BFI   acquisition.   See   "Description  of  Other
Indebtedness" for a more detailed description of these credit facilities.

         Pursuant to a Series A Convertible  Preferred Stock Purchase Agreement,
on November 12, 1999 we issued and sold to investment funds associated with Bain
Capital and with Madison  Dearborn  75,000 shares of our  convertible  preferred
stock for $1,000 per share, or an aggregate of $75.0 million, in cash, less some
of the fees and expenses which are described  below. See "Description of Capital
Stock" for a more  detailed  description  of the  convertible  preferred  stock.
Dividends on the  convertible  preferred stock are payable in kind in additional
shares and accrue at the annual rate of 3.375%, subject to adjustment.

         Our  ability to make  payments  on our  indebtedness,  including  these
notes,  as well as to fund our operations and future growth,  will depend on our
ability to generate  cash. Our success in doing so will depend on the results of
our  operations,  which in turn will  depend on many  factors,  including  those
described in the "Risk Factors" section of this prospectus and elsewhere in this
prospectus.  Our ability to generate  adequate  cash is also  subject to general
economic,  financial,  competitive,  legislative,  regulatory  and other factors
beyond our  control.  We also will  continue  to  evaluate  and pursue  selected
acquisitions.

         Based on our current level of operations and  anticipated  cost savings
and  operating  improvements,  we  believe  that our cash flow from  operations,
available  cash and  available  borrowings  under our  credit  facility  will be
sufficient to meet our future liquidity needs, including potential acquisitions,
however,  we cannot  assure you that this will be the case.  We also may need to
refinance all or a portion of our indebtedness, including the series B notes, on
or before  maturity.  We cannot assure you that we will be able to refinance any
of our  indebtedness,  including our credit  facility and the series B notes, on
commercially  reasonable terms or at all. See "Risk  Factors--Ability to Service
Debt."

         Capital  expenditures for Stericycle and the BFI medical waste business
on a pro forma  combined  basis for the twelve  months  ended June 30, 1999 were
approximately $14.4 million. In addition,  we currently  anticipate that we will
spend  approximately  $14.0  million on a pro forma  combined  basis for capital
expenditures in 2000, which includes  approximately  $4.0 million to install air
pollution  control  systems  so that  our  incinerators  will  comply  with  EPA
regulations which become effective in 2002.

         As part of the BFI acquisition,  we anticipate taking a non-cash charge
of  approximately  $1.8  million,  net of tax, and  recording  accrued  purchase
accounting  liabilities of approximately $2.0 million for severance and facility
closing  costs  expected  to be  incurred as part of the  integration  plan.  We
anticipate  incurring the cash costs related to these  initiatives over the next
twelve months.

         We are  purchasing the BFI medical waste  business  excluding  accounts
receivable and accounts payable. As a result,  based on historical  requirements
of the BFI medical waste business, we expect to make a net investment in working
capital of approximately $15.0 million in the twelve months following closing.

         Our exposure to market risk includes the possibility of rising interest
rates in connection with our credit  facility,  thereby  increasing debt service
obligations,  which could  adversely  affect our cash flows.  We have borrowings
outstanding subject to variable interest rates of approximately $225.0 million.

         Net cash provided by financing  activities was  $23,974,000  during the
nine months ended  September 30, 1999 compared to $3,010,000  for the comparable
period in 1998. The difference  between the two periods  results  primarily from
the  completion  of our second  public  offering of common  stock,  which raised
$47,158,000  net  of  offering  costs,  partially  offset  by the  repayment  of
$25,881,000 in debt in 1999.

         Our other financial obligations include industrial  development revenue
bonds issued on behalf of and guaranteed by us to finance our Woonsocket,  Rhode
Island treatment  facility and equipment.  These bonds, which had an outstanding
aggregate balance of $1,071,000 as of September 30, 1999 at fixed interest rates
ranging from 6.30% to 7.375%,  are due in various  amounts through June 2017. In
addition,   we  have  issued  various   promissory   notes  in  connection  with
acquisitions during 1997 and 1998, consisting primarily of a 10-year note issued
as part of the  Environmental  Control  acquisition,  which  had an  outstanding
balance of $1,840,000 at September 30, 1999.

<PAGE>


         As a  consequence  of changes in stock  ownership,  it is expected  our
annual  utilization  of net operating loss  carryforwards  permitted by Internal
Revenue Code Section 382 will be limited and that,  as a result,  our  effective
tax rate will increase.

         For all periods for which financial statements of the BFI medical waste
business are  presented in this  prospectus,  all treasury  related  activities,
including  cash  payments,  receipts  and  borrowings  were  performed  by BFI's
corporate headquarters and are not separately  identifiable with the BFI medical
waste business. BFI did not separately identify intercompany loans receivable or
payable  associated  with  different  service lines.  Accordingly,  all treasury
related assets and  liabilities  (cash and debt and the related  interest income
and expense) and  intercompany  loans  receivable and payable have been excluded
from the BFI medical waste business financial statements.

YEAR 2000 ISSUES

         Stericycle.  We have developed a plan to modify our information systems
in  anticipation of the year 2000. We currently have  substantially  implemented
this plan at a cost of less than $200,000.  In light of our progress to date and
the  fact  that our  business  is not  significantly  affected  by the  software
employed by our vendors and customers,  we do not anticipate  that the year 2000
will present any material  problems in respect of our key products and services.
We are continuously  making acquisitions and in the course of an acquisition may
acquire software or hardware that is not year 2000 compliant.  In the event that
this  situation  arises,  we will  take  the  necessary  steps  to  correct  the
compliance issues in a timely manner.

         Our plan for the year 2000  comprises  both  remediating  our  existing
hardware and software and upgrading our business  information systems generally.
We initiated the upgrading  process in 1998 in order to respond to the growth in
size of our business  and the  inefficiencies  caused by disparate  hardware and
software. Undertaken for reasons unrelated to year 2000 issues, our upgrading of
our business  information  systems has the benefit of enabling us to become year
2000 compliant in the course of the upgrade.

         We have  conducted an extensive  review of potential  year 2000 issues.
Our assessment of our treatment  facilities  and equipment  concluded that there
was no material risk that we would be unable to treat regulated medical waste as
a result of year 2000  issues.  The new  software  that we  adopted  in 1998 for
accounting  and  related  purposes  is already  year 2000  compliant.  Our other
software  and computer  hardware are  currently  being  tested,  and upgrades or
appropriate adjustments have been or will be made in accordance with our upgrade
plans or as  required.  We are also in the  process of  reviewing  the year 2000
compliance status of our significant vendors.

         We believe that we have an effective plan in place to resolve year 2000
issues in a timely  manner.  In the event  that we are  unable to  complete  the
remaining  phases of our year 2000 plan,  we believe  that,  as a result of year
2000  issues  solely  affecting  us,  the  principal  effect  on us  would be an
inability to invoice a portion of our customers for our services.

         We are also  developing  contingency  plans to take  into  account  any
inability  of us and others to become fully year 2000  compliant in time.  These
plans involve,  among other actions,  implementing  manual  systems,  increasing
inventories of parts and supplies and adjusting staffing strategies.

         The BFI medical waste business. In fiscal 1995, BFI initiated a project
to  implement  the SAP suite of business  systems  software  (which is year 2000
compliant) to replace  essentially  all of its existing  business  systems.  The
first phase of this project, implemented in January 1998, replaced approximately
45%  of  the  existing  business  systems  of  BFI.  Due to  timing  related  to
implementation  of the second phase of this  project,  BFI commenced a year 2000
project to ensure compliance of remaining legacy systems.

         As of June 30, 1999 nearly all of the  facilities and operations of the
BFI medical waste business utilized BFI's SAP suite of business systems software
as well as BFI's legacy  system known as CMS.  Both SAP and CMS are already year
2000 compliant systems.  Conversions of the remaining  facilities and operations
are planned for  completion  before  December  1999.  The costs related to these
conversions are not material to the results of operations or financial  position
of the BFI medical waste business.

<PAGE>


         The  risk to the BFI  medical  waste  business  of not  completing  the
conversions  of the  remaining  facilities  and  operations  are  that  customer
invoices from those  facilities  may have to be prepared  manually and therefore
may be delayed.  Our  contingency  plan for the BFI medical waste business is to
enter all customer  information  into CMS so as to produce  invoices in a timely
manner.  This entry may have to be  performed  manually  which may cause a short
delay in customer invoices.

         In  addition,  BFI has  initiated  a process to (1)  identify  critical
supplier  and customer  related  issues,  (2) assess the year 2000  readiness of
equipment  located at all of its operating  facilities  and (3)  determine  what
contingency  plans may be required.  At this time, the potential  effects in the
event that the BFI medical  waste  business  and/or third  parties are unable to
resolve year 2000 problems timely are not determinable.

RECENTLY ISSUED ACCOUNTING STANDARDS

         In June 1998, the Financial  Accounting Standards Board issued SFAS No.
133, "Accounting for Derivative  Instruments and Hedging Activity." SFAS No. 133
provides   comprehensive  and  consistent  standards  for  the  recognition  and
measurement of derivative and hedging  activities.  It requires that derivatives
be recorded on the  consolidated  balance  sheets at fair value and  establishes
criteria for hedges of changes in the fair value of assets,  liabilities or firm
commitments, hedges of variable cash flows of forecasted transactions and hedges
of foreign currency exposures of net investments in foreign operations.  Changes
in the fair value of derivatives  that do not meet the criteria for hedges would
be recognized in the consolidated statement of earnings.  This statement will be
effective for us beginning  January 1, 2001. The adoption of SFAS No. 133 is not
expected to have a material impact on us.


<PAGE>


                                    BUSINESS

OVERVIEW

         We are the largest regulated medical waste management  company in North
America, serving over 235,000 customers throughout the United States, Canada and
Puerto  Rico.  We  have  the  only  fully  integrated,  national  medical  waste
management  network and an estimated  22% share of the United  States  regulated
medical waste market. Our network includes 35  treatment/collection  centers and
93 additional  transfer and collection sites. We use this network to provide the
industry's  broadest  service  offering,  including  medical  waste  collection,
transportation, treatment, recycling and disposal to unrelated parties, together
with related  consulting,  training and  education  services and  products.  Our
treatment  technologies  include our proprietary,  environmentally  friendly and
efficient  electro-thermal  deactivation  system, as well as traditional methods
such as autoclaving and  incineration.  On a pro forma combined  basis,  for the
year ended  December 31, 1998 and for the nine months ended  September 30, 1999,
we generated revenues of $290.3 million and $229.4 million, respectively.

         On November 12,  1999,  we acquired  from Allied the BFI medical  waste
business and Allied's  medical waste  operations.  The purchase  price for these
operations was $410.5 million in cash, subject to post-closing adjustment.

         Our operations benefit significantly from the stability associated with
our long-term  customer  relationships.  We have long-term customer contracts of
between one and five years with substantially all of our customers.  In general,
our contracts with small account customers have automatic renewal provisions. We
believe the  services we offer are  compelling  to our  customers,  because they
allow our customers to avoid the  significant  capital and operating  costs that
they would have to incur to internally  manage their  regulated  medical  waste.
Furthermore,  by outsourcing these services and purchasing  consulting and other
services  from us, our  customers  reduce or  eliminate  their risk of the large
fines associated with regulatory non-compliance.

         We benefit from significant  customer  diversification,  with no single
customer  accounting  for more  than 2% of  revenues,  and our top 10  customers
accounting  for  approximately  7% of  revenues,  in each  case  on a pro  forma
combined basis for the year ended December 31, 1998. Our two principal groups of
customers  include:  over 230,700  small  account  customers  (e.g.,  outpatient
clinics, medical and dental offices and long-term and sub-acute care facilities)
and over  4,300  large  account  customers  (e.g.,  hospitals,  blood  banks and
pharmaceutical manufacturers). Small account customers tend to be most likely to
outsource medical waste management services and tend to be more service oriented
and less price  sensitive,  resulting in higher margins for us. We are targeting
new small account  customers  through our  proprietary  database of over 330,000
potential small account  customers not presently  served by us and our dedicated
small account sales force. We successfully  increased the proportion of revenues
from small account  customers from 33% of revenues in the fourth quarter of 1996
to 57% in the second quarter of 1999, which helped increase our operating income
margin significantly.

INDUSTRY OVERVIEW

         The  large,   fragmented   medical  waste   industry  has   experienced
significant  growth since its  inception.  The regulated  medical waste industry
began with the Medical Waste Tracking Act of 1988, which was enacted by Congress
in response to media  attention  after  medical  waste washed ashore on beaches,
particularly  in New York and New  Jersey.  Since  the  1980s,  the  public  and
government  regulators  have  increasingly  demanded  the  proper  handling  and
disposal of the medical waste  generated by the health care industry.  Regulated
medical  waste is  generally  described  as any medical  waste that can cause an
infectious  disease,  including:  single-use  disposable items, such as needles,
syringes,  gloves and other medical supplies;  cultures and stocks of infectious
agents; and blood and blood products.

         An independent  study estimated the size of the regulated medical waste
market in the United States in 1999 to be approximately $1.4 billion. We believe
the worldwide market for regulated medical waste management  services  currently
is  approximately  $3.0  billion  and,  including  ancillary  services  such  as
training,  education,  product sales and consulting services, in excess of $10.0
billion.   We  also  believe  the  regulated  medical  waste  industry  is  less
susceptible than most industries to the effects of a general economic  downturn.

<PAGE>


Industry  sources  estimate the current  annual growth rate of the United States
regulated  medical  waste  industry to be 7-10%,  driven by a number of factors,
including:

         Pressure to Reduce Hospital Costs Leads to Outsourcing of Services. The
health care industry is under  pressure to reduce costs and improve  efficiency.
To accomplish  this, it is using outside  contractors  to perform some services,
including medical waste management. We believe that our medical waste management
services help health care providers reduce costs by reducing their medical waste
tracking,  handling and compliance  costs,  reducing their  potential  liability
related to  employee  exposure  to  bloodborne  pathogens  and other  infectious
material  and  reducing  the amount of money  invested in on-site  treatment  of
medical waste.

         Growing  Importance  of Smaller  Account  Customers.  We  believe  that
managed  care and other  health  care  cost-containment  pressures  are  causing
patient care to shift from institutional higher-cost acute-care settings to less
expensive,  smaller,  off-site treatment alternatives.  Many common diseases and
conditions  are now being  treated in  smaller  non-institutional  settings.  We
believe that these  non-institutional  alternate-site  health care  expenditures
will continue to grow as cost-cutting pressures increase.

         Aging of the Population.  According to industry  statistics,  the "baby
boom" generation (births between 1946 and 1964) constitutes approximately 30% of
the United States  population.  The relative size of this  generation,  combined
with  declining  birth  rates,  will  continue  to result in an  increase in the
average age of the  population,  while falling  mortality  rates ensure that the
average  person will live longer.  As people age,  they  typically  require more
medical attention and a wider variety of tests and procedures.  In addition,  as
technology  improves,  more tests and procedures become available.  All of these
factors lead to increased generation of medical waste.

         Environmental  and Safety  Regulation.  We believe that many businesses
currently not using  outsourced  medical waste  services are unaware of the need
for  proper  training  of  employees  and the  Occupational  Safety  and  Health
Administration  requirements  regarding  the  handling of medical  waste.  These
businesses  include  restaurants,  casinos,  hotels and generally all businesses
where  employees may come in contact with  blood-borne  pathogens.  In addition,
home  health care is  currently  unregulated  and may become  subject to similar
blood-borne pathogen regulations in the future.

         Our industry is subject to extensive  regulation  beyond the MWTA.  For
example,  the new stringent Clean Air Act regulations  adopted in 1997 limit the
discharge  into  the   atmosphere  of  pollutants   released  by  medical  waste
incineration.  This is expected to increase the costs of operating medical waste
incinerators  and  to  result  in  significant  closures  of  on-site  treatment
facilities,  thereby increasing the demand for off-site treatment services.  The
EPA estimates  that  approximately  83-90% of small medical waste  incinerators,
60-95% of medium medical waste incinerators and up to 35% of large medical waste
incinerators in the United States will be closed over the next several years. In
addition, OSHA has issued regulations concerning employee exposure to bloodborne
pathogens and other potentially  infectious materials that require,  among other
things,  special  procedures  for the handling and disposal of medical waste and
annual  training  of all  personnel  who may be  exposed to blood and other body
fluids. We believe that these regulations will help to expand the market for our
services beyond traditional providers of health care.



<PAGE>


COMPETITIVE STRENGTHS

         We believe that we benefit from the following competitive strengths:

         MARKET  LEADER.  We are the largest and the only  national  provider of
medical waste management  services in the United States.  We estimate our market
share to be  approximately  22% in the  United  States  and that we have over 11
times the  revenues of our next  largest  competitor.  As a result of our market
leadership  position,  we  provide  our  customers  with  superior,   vertically
integrated  services  as well  as a  variety  of  products  and we are the  only
industry  participant able to service national accounts.  We believe our leading
market  position  provides  us  with  more  operating   leverage  and  a  unique
competitive  advantage in attracting and retaining  customers as compared to our
smaller regional and local competitors.

         BROADEST RANGE OF HIGH QUALITY SERVICES.  We offer our customers a wide
range of services to help them  develop  internal  systems and  processes  which
allow them to  efficiently  and safely manage their medical waste from the point
of generation  through  treatment and disposal.  For example,  we have developed
programs  to help  train our  customers'  employees  on the  proper  methods  of
handling medical waste in order to reduce  potential  employee  exposure.  Other
services  include those designed to help clients ensure and maintain  compliance
with OSHA and other  relevant  regulations.  We also supply  specially  designed
containers  for  use by most  of our  large  account  customers,  including  our
Steri-Tub(R) container, a reusable leak- and puncture-resistant  container, made
from recycled plastic, which we developed and patented.

         ESTABLISHED NATIONAL NETWORK. Our 35  treatment/collection  centers and
our 235,000  customers  in 46 states  give us the largest and the only  national
network in the regulated medical waste industry.  The extensive  federal,  state
and local laws and  regulations  governing the regulated  medical waste industry
typically require some type of governmental  approval for new facilities.  These
approvals  are  frequently  opposed by elected  officials,  local  residents  or
citizen groups,  and can be difficult to obtain. We have significant  experience
in obtaining and maintaining  these permits,  authorizations  and other types of
governmental  approvals. We believe a network similar in scale and scope to ours
would be expensive and time-consuming for a competitor to develop.

         LOW COST  OPERATOR.  We are  often the  low-cost  provider  within  the
markets we serve.  This results from our vertically  integrated  network and our
broad  geographic  presence.  As a result,  we are able to:  increase  our route
densities,  which permits our drivers to make more stops per shift; minimize the
distance  traveled by our  collection  vehicles  to  treatment  facilities;  and
increase the  utilization  of our equipment and  facilities to internally  treat
more of the waste we collect. Our next largest competitor in the U.S. market has
five  treatment  facilities  and we believe most of our  competitors do not have
fully integrated  operations.  We believe our vertically  integrated  operations
provide us a competitive advantage over smaller, less integrated competitors.

         DIVERSE CUSTOMER BASE AND REVENUE  STABILITY.  We have developed strong
contracts  and  service   agreements  with  a  diverse  network  of  established
customers.  Our top 10 customers only accounted for approximately 7% of revenues
and no single customer accounted for more than 2% of revenues, in each case on a
pro forma  combined  basis for the year ended December 31, 1998. We believe that
our  diverse  customer  base  would  mitigate  the  impact  of the  loss  of any
particular  customer.  We are also generally  protected from regulatory  changes
which affect our costs, because our contracts generally contain provisions which
allow us to adjust our prices to reflect any additional  costs caused by changes
in regulations.

         STRONG SALES  NETWORK AND  PROPRIETARY  DATABASE.  We have the largest,
most well-established  sales force in the medical waste industry,  with over 277
sales representatives and telemarketing personnel. We use both telemarketing and
direct sales efforts to obtain new customers.  In addition,  we have developed a
proprietary  database of over 330,000  potential  small  account  customers  not
presently  served by us, which we believe  gives us a  competitive  advantage in
identifying and reaching higher margin, small account customers. We believe that
we have been  particularly  effective at attracting new small account  customers
through  our  innovative  "flex-rep"  program  in which  part-time  field  sales
representatives  work  in  tandem  with  telemarketers.   We  believe  that  the
combination of the two allows us to  cost-effectively  sell  "face-to-face" with
potential  small  account  customers and is more  effective at converting  sales
leads into customers than telemarketing alone.

<PAGE>


         EXPERIENCED MANAGEMENT TEAM. The Chairman of our Board of Directors and
our five most senior  executives  collectively  have over 45 years of management
experience  in the  health  care and  waste  management  industries.  Our  Chief
Executive  Officer,  had more than 15 years of senior  management  experience at
Abbott  Laboratories  and, since joining us in 1992 as Chief Executive  Officer,
has led us from an early stage venture capital  concept to the industry  leader.
Frank  ten  Brink,  our  Chief  Financial  Officer,  previously  served as Chief
Financial Officer of Hexacomb Corporation.  Richard Kogler recently joined us as
executive vice president for domestic  operations and Chief  Operating  Officer.
Previously,  Mr. Kogler served in senior roles with American Disposal  Services,
Inc. Jack Schuler, our Chairman, is also the current Chairman of Ventana Medical
Systems.  Previously,  Mr. Schuler was the President and Chief Operating Officer
of  Abbott  Laboratories.  Anthony  J.  Tomasello  has been our  Executive  Vice
President and Chief Technical Officer since January 1999, and previously was our
Vice President,  Operations  beginning in 1990.  Previously,  Mr.  Tomasello was
President and Chief  Operating  Officer of Pi Enterprises  and Orbital  Systems.
Collectively,  our directors and senior executives have beneficial  ownership of
approximately 16.4% of our common stock.

BUSINESS STRATEGY

         Our goals are to  maintain  our  position  as the  largest  provider of
integrated  services in the regulated medical waste industry and to continuously
improve our  profitability.  Components  of our strategy to achieve  these goals
include:

         TARGET HIGHER MARGIN,  SMALL ACCOUNT  CUSTOMERS.  We intend to continue
actively  targeting  and  growing  our  base of  higher  margin,  small  account
customers. Prior to the BFI acquisition,  our management had successfully raised
the percentage of our revenues from small account customers from 33% of revenues
in the fourth quarter of 1996 to 57% in the second quarter of 1999, which helped
increase our operating  income  margin  significantly.  Small account  customers
typically do not produce a sufficient  volume of regulated  medical  waste on an
individual  basis to justify  capital  expenditures on their own waste treatment
facilities  or the  expense of hiring  regulatory  compliance  personnel.  Small
account  customers  are  more  service  sensitive  and  typically  rely on fully
integrated  service providers like us for timely waste removal,  staff training,
assistance with  recordkeeping and OSHA compliance  consulting.  We believe that
the  number  of small  account  customers  and the  opportunities  for  sales of
ancillary  services and products to these customers will continue to grow, which
will generate significant additional revenue growth opportunities.

         CAPITALIZE ON OUTSOURCING  DUE TO NEWLY ENACTED CLEAN AIR  REGULATIONS.
The Clean Air Act regulations  have increased both the capital costs required to
bring many existing  incinerators  into  compliance  and the operating  costs of
continued  compliance.  The EPA expects that most hospitals will shut down their
incinerators  in  response  to  regulations  adopted  in 1997,  which  limit the
discharge  into  the   atmosphere  of  pollutants   released  by  medical  waste
incineration.  We plan to capitalize on the anticipated movement by hospitals to
outsource  medical waste treatment  rather than incur the cost of installing the
air pollution control systems necessary to comply with these EPA regulations. We
believe that  approximately  35% of the total medical waste  disposal  market is
treated  on-site  at  hospitals.  Because  our  facilities  are  modern and well
maintained,  we believe  that our  capital  expenditures  required  to bring our
incinerators   into  compliance   with  these  new  regulations   will  only  be
approximately $4.0 million.

         EXPAND  RANGE OF SERVICES  AND  PRODUCTS.  We believe  that we have the
opportunity  to expand our  business by  increasing  the range of  products  and
services that we offer to our existing customers. For example, we may expand our
collection and treatment of materials like  photographic  chemicals,  lead foils
and amalgam used in dental and radiology laboratories.  In addition, because our
drivers call on numerous  medical  facilities on a routine basis,  we offer many
single-use  disposable  medical  supplies  to our  customers  and we  intend  to
increase these offerings in the future.

ACQUISITION AND INTEGRATION HISTORY

         We believe  that our  management  team has  substantial  experience  in
evaluating potential acquisition candidates and determining whether a particular
medical  waste  management  business  can be  successfully  integrated  into our
business.  In  determining  whether to proceed with a business  acquisition,  we
evaluate a number of factors including:

         o    the financial impact of  the  proposed  acquisition, including the
              effect on our cash flow and earnings per share;

<PAGE>

         o    the  historical  and  projected financial results  of  the  target
              company;

         o    the purchase  price negotiated  with  the seller and  our expected
              internal rate of return;

         o    the composition and size of the target company's customer base;

         o    the efficiencies we can achieve  by integrating the target company
              with one or more of our existing operations;

         o    the potential for  enhancing or expanding our  geographic  service
              area  and  allowing  us to make  other  acquisitions  in the  same
              service area;

         o    the experience, reputation and personality of the target company's
              management;

         o    the  target   company's  reputation   for  customer   service  and
              relationships with the communities that it serves; and

         o    whether the acquisition gives us any strategic advantages over our
              competition.

         We  have   established   an   efficient   procedure   for   integrating
newly-acquired  companies into our business while  minimizing  disruption of our
operations.  Once a business is  acquired,  we  implement  programs  designed to
improve customer service,  sales,  marketing,  routing,  equipment  utilization,
employee productivity, operating efficiencies and overall profitability.

         We have completed the following 43 acquisitions:

<TABLE>

SELLER                                                       DATE                       MARKETS SERVED
- ------                                                       ----                       --------------

<S>                                                          <C>                        <C>
Allied Waste Industries, Inc. (BFI acquisition)......        November 1999              United States, Canada and
                                                                                        Puerto Rico
All-Med Safewaste Inc................................        July 1999                  Massachusetts
Ionization Research Company, Inc.....................        July 1999                  California
Enviro-Tech Services.................................        June 1999                  Arizona
Foster Environmental Services Corp...................        May 1999                   New York
Environmental Guardian, Inc..........................        May 1999                   Wisconsin
Browning-Ferris Industries, Inc......................        April 1999                 Texas
Arizona Medical Waste Management.....................        March 1999                 Arizona
Enviro-Tech Disposal Division of
    Lancaster General Services Business Trust........        March 1999                 Pennsylvania
Medical Express and General Courier
   Service, Inc......................................        February 1999              Pennsylvania
Southwest Medecol L.C................................        February 1999              Kansas, Texas and Colorado
Medical Resources Recycling Systems, Inc.............        February 1999              Washington and Idaho
Medical Resources Corporation........................        February 1999              New Mexico, Colorado and
                                                                                        Arizona
Environmental Transloading Services, Inc.............        January 1999               California
Med-Tech Environmental Limited.......................        January 1999 and
                                                             December 1998              Alberta, British
                                                                                        Columbia,
                                                                                        Ontario, Quebec,
                                                                                        Connecticut,
                                                                                        Maine, Massachusetts,
                                                                                        New Hampshire,
                                                                                        New York, Rhode Island
                                                                                        and Vermont
Mid-America Environmental, Inc.......................        December 1998              Indiana


<PAGE>


Waste Systems, Inc. (3CI)............................        October 1998               Alabama, Arkansas,
                                                                                        Florida, Georgia, Kansas,
                                                                                        Louisiana, Mississippi,
                                                                                        Missouri, Oklahoma,
                                                                                        Tennessee and Texas
Medical Compliance Services, Inc.....................        September 1998             New Mexico and Texas
Regional Recycling, Inc..............................        August 1998                New Jersey
Allegro Carting and Recycling, Inc...................        August 1998                New York
Mediwaste Disposal Services LLC......................        July 1998                  Texas
Superior of Wisconsin, Inc...........................        July 1998                  Wisconsin
Arizona Hazardous Waste Disposal.....................        July 1998                  Arizona
Controlled Medical Disposal, Inc.....................        June 1998                  New Jersey
Arizona Hazardous Waste Disposal.....................        June 1998                  Arizona
Medisin, Inc.........................................        April 1998                 Kentucky and Ohio
Bridgeview, Inc......................................        March 1998                 Pennsylvania
Browning-Ferris Industries, Inc......................        December 1997              Arizona
Phoenix Services, Inc................................        November 1997              Maryland
Cal-Va, Inc..........................................        November 1997              Virginia and
                                                                                        Washington, D.C.
Envirotech Enterprises, Inc..........................        August 1997                Arizona
Rumpke Container Service, Inc........................        July 1997                  Ohio
Regional Carting, Inc................................        July 1997                  New Jersey
Waste Management, Inc................................        June 1997                  Wisconsin
Environmental Control Co., Inc.......................        May 1997                   Connecticut, New Jersey
                                                                                        and New York
Waste Management, Inc................................        December 1996              Arizona, Colorado,
                                                                                        Indiana, Kentucky,
                                                                                        Maryland, North Carolina,
                                                                                        Ohio, Pennsylvania, South
                                                                                        Carolina, Tennessee,
                                                                                        Utah,
                                                                                        Washington and Washington
                                                                                        D.C.
Doctors Environmental Control, Inc...................        May 1996                   California
WMI Medical Services of New England..................        February 1996              New Hampshire,
                                                                                        Massachusetts and
                                                                                        Maine
Bio-Med of Oregon, Inc...............................        January 1996               Oregon
Safetech Health Care.................................        June 1995                  California
Safe Way Disposal Systems, Inc.......................        September 1994             Connecticut and New York
Recovery Corporation of America......................        March 1994                 Illinois, Indiana and
                                                                                        Michigan

</TABLE>

SERVICES AND OPERATIONS

         Our   services   and    operations   are   comprised   of   collection,
transportation,   treatment,  disposal  and  recycling,  together  with  related
training and education programs,  consulting services and product sales. We have
35   treatment/collection   facilities  that  service  over  235,000  customers,
consisting of over 230,700 small account  customers and over 4,300 large account
customers.  We develop  programs  to help our  customers  handle,  separate  and
contain  medical  waste.  We also  advise  health care  providers  on the proper
methods of recording and  documenting  their medical waste  management to comply
with federal,  state and local  regulations.  In addition,  we offer  consulting
services to our health care  customers  to assist them in reducing the amount of
medical waste they generate.

         Collection and Transportation. We consider efficiency of collection and
transportation to be a critical element of our operations  because it represents
the largest  component of our operating  costs. We try to maximize the number of

<PAGE>


stops on each route. We use a tracking  system for our collection  vehicles that
helps to improve efficiency. We try to match the size of our collection vehicles
to the amount of medical  waste to be  collected  at a  particular  stop or on a
particular  route.  We collect  containers or corrugated  boxes of medical waste
from our customers at intervals depending upon customer  requirements,  terms of
the service  agreement and the volume of medical waste produced.  The containers
or boxes are inspected at the customer's site prior to pickup. The waste is then
transported  directly  to  one  of  our  treatment  facilities  or to one of our
transfer  stations where it is combined with other medical waste and transported
to a treatment  facility.  In some  circumstances  we  transport  waste to other
specially-licensed  medical  waste  treatment  facilities.  We  transport  small
quantities of specific hazardous  substances,  such as photographic  fixer, lead
foils and  dental  amalgam,  from some of our  customers  to a metals  recycling
operation.

         The use of transfer  stations  is another  important  component  of our
collection and transportation operations. We utilize transfer stations in a "hub
and spoke"  configuration  which allows us to expand our geographic service area
and  increase  the volume of medical  waste that can be treated at a  particular
facility. Smaller loads of waste containers are temporarily held at the transfer
stations until they can be consolidated  into full truckloads and transported to
a treatment facility.

         As part of our  collection  operations,  we  supply  specially-designed
containers for use by most of our large account customers and many of our larger
small account  customers.  We have  developed and patented a reusable  leak- and
puncture-resistant  container,  made from  recycled  plastic,  which we call the
Steri-Tub(R)  container.  The plastic  container enables our customers to reduce
costs by reducing the number of times that medical waste is handled, eliminating
the cost (and weight) of corrugated  boxes and  potentially  reducing  liability
resulting  from human contact with medical  waste.  The plastic  containers  are
designed to maximize  the loads that will fit within the cargo  compartments  of
standard  trucks and trailers.  We believe these features make the  Steri-Tub(R)
plastic  container  superior  to  our  competitors'  reusable  containers.  If a
customer  generates  a large  volume of waste,  we will place a large  temporary
storage  container or trailer on the customer's  premises.  In order to maximize
regulatory  compliance  and  minimize  potential  liability,  we will not accept
medical waste unless it is properly  packaged by customers in containers that we
have either supplied or approved.

         Treatment  and  Disposal.   Upon  arrival  at  a  treatment   facility,
containers  or boxes of medical  waste are  scanned  to verify  that they do not
contain any unacceptable substances, like radioactive material. Any container or
box  that is  discovered  to  contain  unacceptable  waste  is  returned  to the
customer. In some cases our operating permits require that unacceptable waste be
reported to regulatory authorities. After inspection, the waste is treated using
one of our various  treatment  technologies.  Upon  completion of the particular
process,  the resulting  waste or incinerator  ash is  transported  for resource
recovery,  recycling or disposal in a nonhazardous  waste  landfill  operated by
parties  unaffiliated  with us. After the Steri-Tub(R)  plastic  containers have
been emptied, they are washed, sanitized and returned to customers for re-use.

         Consulting  Services.  Before medical waste is picked up by our trucks,
our integrated  waste  management  approach  attempts to "build in" efficiencies
that will yield logistic  advantages.  For example,  our consulting services can
assist our customers in reducing the volume of medical waste they  generate.  In
addition,  we provide customers with the documentation  necessary for compliance
with laws which, if they complete them properly,  will reduce  interruptions  to
their businesses to verify compliance.

         Documentation.  We provide complete  documentation to our customers for
all medical waste that we collect,  including the name of the generator, date of
pick-up  and date of  delivery  to a  treatment  facility.  We believe  that our
documentation  system meets all applicable federal,  state and local regulations
regarding  the packaging and labeling of medical  waste,  including  regulations
issued  by the U.S.  Department  of  Transportation,  OSHA and  state  and local
authorities. This documentation is sometimes used by our customers to prove that
they are in compliance  with these  regulations.  These customers will often pay
for us to retrieve and reprint old manifests and other documentation. We believe
that our ability to offer document archiving and retrieval services represents a
competitive advantage.


<PAGE>


MARKETING AND SALES

MARKETING STRATEGY

         We have the largest, most  well-established  sales force in the medical
waste industry, with over 277 sales representatives and telemarketing personnel.
We use both  telemarketing and direct sales efforts to obtain new customers.  In
addition,  we developed a proprietary  database of over 330,000  potential small
account  customers  not  presently  served by us,  which we  believe  gives us a
competitive  advantage in identifying and reaching higher margin,  small account
customers. We believe that we have been particularly effective at attracting new
small  account  customers  through our  innovative  "flex-rep"  program in which
part-time  field sales  representatives  work in tandem with  telemarketers.  We
believe  that the  combination  of the two  allows us to  cost-effectively  sell
"face-to-face"  with potential small account  customers and is more effective at
converting sales leads into customers than telemarketing alone.

         In addition to our sales representatives and telemarketing personnel we
have 21 account  managers  responsible  for customer  service  centers.  Our 868
drivers  also  participate  in  our  marketing  and  sales  effort  by  actively
soliciting small account customers while they service their routes.

SMALL ACCOUNT CUSTOMERS

         We have targeted  small account  customers as a growth area. We believe
that these  customers  offer high profit  potential  compared to other potential
customers.  Typical  small account  customers are  individual or small groups of
doctors,  dentists and other health care providers who are widely  dispersed and
generate only small amounts of medical waste. These customers are very concerned
about  having the medical  waste picked up and  disposed of in  compliance  with
applicable  state and federal  regulations.  We believe the  potential  risks of
non-compliance  by these  customers with  applicable  state and federal  medical
waste  regulations  is  viewed  by them as  disproportionate  to the cost of the
services we provide.  We believe  this has been the basis for the  significantly
higher gross margins we have achieved with our small account customers  relative
to our large account customers.  Our telemarketers use our proprietary  database
to identify and qualify these small account  customers and arrange  appointments
for our trained "flex-reps." We believe that our telemarketing  program provides
a  cost-effective  way  to  reach  the  numerous  but  scattered  small  account
customers.

         We have a "mail-back"  service through which we can reach small account
customers located in outlying areas that would be inefficient to serve using our
regular  route  structure.  In  addition,  we have  introduced  a medical  waste
management  and  compliance  program  specifically  targeted  to  small  account
customers  who are  required  to  comply  with  the  OSHA  bloodborne  pathogens
regulations but who lack the internal personnel and systems to do so.

LARGE ACCOUNT CUSTOMERS

         We  believe  that we have been  successful  in  serving  large  account
customers and plan to continue to serve those  customers as long as satisfactory
levels of  profitability  can be maintained.  Our marketing and sales efforts to
large  account  customers are conducted by full-time  account  executives  whose
responsibilities  include  identifying  and attracting new customers and serving
our existing account base of  approximately  4,300 large account  customers.  In
addition to securing new contracts,  our marketing and sales  personnel  provide
consulting services to our health care customers, assisting them in reducing the
amount of medical waste they generate, training their employees on safety issues
and implementing  programs to audit,  classify and segregate  medical waste in a
proper manner. We have several  strategic  alliances to supplement our marketing
and sales efforts to large account customers.

         We believe that the  implementation of more stringent Clean Air Act and
other federal regulations  directly and indirectly  affecting medical waste will
enable us to improve our marketing  efforts to large account  customers  because
the additional costs they will incur to comply with these  regulations will make
the costs of our services more attractive, particularly relative to their use of
their own incinerators.


<PAGE>


NATIONAL ACCOUNTS

         As a  result  of our  extensive  geographic  coverage,  we are the only
company capable of servicing  national account customers (i.e.,  those customers
requiring  medical waste disposal services at various  geographically  dispersed
locations).  The BFI medical waste business has historically focused on national
accounts and, as a result of its extensive  geographic  coverage,  has been very
successful with this type of account.

CONTRACT AND SERVICE AGREEMENTS

         We have long-term contracts with substantially all of our customers. We
negotiate  individual  service  agreements  with each  large  account  and small
account  customer.  Although we have a standard form of agreement,  particularly
for small  account  customers,  terms  may vary  depending  upon the  customer's
service  requirements  and the volume of medical  waste  generated  and, in some
jurisdictions, requirements imposed by statute or regulation. Service agreements
typically  include  provisions  relating to types of  containers,  frequency  of
collection,  pricing,  treatment and documentation for tracking  purposes.  Each
agreement also specifies the customer's  obligation to pack its medical waste in
approved  containers.  Substantially  all of our  agreements  with small account
customers contain automatic renewal provisions.

         Service  agreements  are  generally  for a period of one to five years,
although  customers may terminate on written  notice and, in most service areas,
upon payment of a penalty.  Many payment  options are available,  including flat
monthly or quarterly  charges.  We may set our prices on the basis of the number
of containers  that we collect,  the weight of the medical waste that we collect
and treat, the number of collection stops that we make on the customer's  route,
the number of collection stops that we make for a particular multi-site customer
and other factors.

         We have a diverse customer base, with no single customer accounting for
more than 2% of revenues,  and our top 10 customers accounting for approximately
7% of revenues,  in each case on a pro forma  combined  basis for the year ended
December 31, 1998. We do not believe that the loss of any single  customer would
have a material adverse effect on our business,  financial  condition or results
of operations.

INTERNATIONAL

         We have also expanded beyond the United States and Canada.  In 1996, we
entered  into an  agreement  with a  Brazilian  company  to assist in  exploring
opportunities  for  the   commercialization  of  our  medical  waste  management
technology in South America.  This  relationship was expanded in July 1998, when
we entered into an agreement for an exclusive  license to use our ETD technology
in Brazil and for the sale to  Companhia  Auxiliar of two fully  integrated  ETD
processing  lines for use in  treating  medical  waste in the Sao Paulo,  Brazil
metropolitan  market.  In February  1998, we announced the formation of Medam, a
Mexican joint venture  company,  to utilize our ETD  technology to treat medical
and  infectious  waste,  primarily in the Mexico City market.  Medam,  which was
formed with an established Mexican company and an American firm of international
consulting  engineers,  has obtained the  appropriate  permits to construct  and
operate a treatment  facility  with a 150-ton per day capacity.  This  facility,
which is the largest  medical  waste  treatment  facility  permitted  to date in
Mexico,  became  operational  in June 1998.  In  addition,  Medam has acquired a
transportation service company in Mexico.

TREATMENT TECHNOLOGIES

         We primarily use three treatment  technologies  for treating  regulated
medical waste: autoclaving,  incineration and our proprietary ETD technology. On
a pro forma combined basis, the percentages of medical waste, by volume, that we
treated in 1998, by the type of treatment technology used, were as follows:

         o    autoclaving, 63%;

         o    incineration, 27%; and

         o    our proprietary ETD technology, 10%.

<PAGE>


         We vary our  treatment  of  medical  waste  among  available  treatment
technologies based on the type of waste and capacity and pricing  considerations
in each  service  area,  in  order  to  minimize  operating  costs  and  capital
investments.

         AUTOCLAVING.  We estimate that autoclaving  accounts for  approximately
20-25% of United States capacity to treat medical waste at a site other than its
source.  Autoclaving  treats  medical waste with steam at high  temperature  and
pressure to kill pathogens.  Autoclaving alone does not change the appearance of
waste,  and  recognizable  medical  waste may not be accepted  by some  landfill
operators,  but autoclaving may be combined with a shredding or grinding process
to render the medical waste unrecognizable.

         INCINERATION.  We estimate that incineration accounts for approximately
65-70% of United States capacity to treat medical waste at a site other than its
source. Incineration burns medical waste at elevated temperatures and reduces it
to ash.  Incineration  reduces  the volume of waste,  and it is the  recommended
treatment and disposal option for some types of medical waste such as anatomical
waste or residues from chemotherapy procedures.  However,  incineration has come
under  criticism  from the public and from federal,  state and local  regulators
because  of  the  air  emissions  which  must  be  controlled.   Emissions  from
incinerators can contain pollutants which are subject to federal,  state and, in
some  cases,  local  regulation.  In some  circumstances  the ash  byproduct  of
incineration  may be  regulated.  As a result,  it is  expensive  to permit  and
construct new incineration facilities.

         ETD  TREATMENT  PROCESS.  We estimate  that our patented ETD  treatment
process accounts for approximately 8% of United States capacity to treat medical
waste at a site  other than its  source.  ETD  includes  a system  for  grinding
medical waste.  After grinding,  ETD uses an oscillating  field of low-frequency
radio waves to heat medical waste to temperatures that destroy pathogens such as
viruses,  bacteria,  fungi and yeast, without melting the plastic content of the
waste. ETD employs  low-frequency  radio waves because they can penetrate deeper
than high-frequency waves, like microwaves, which can penetrate medical waste of
a  typical  density  only to a depth  of  approximately  five  inches.  ETD uses
frequencies  that match the physical  properties of medical waste,  enabling the
ETD  treatment  process  to kill  pathogens  at  temperatures  as low as 90(0)C.
Although ETD is effective in destroying  pathogens  present in anatomical waste,
we do not currently treat anatomical waste using the ETD process.

         We believe that ETD offers  advantages  over other  methods of treating
medical  waste.  We believe that it is easier to get permits for ETD  facilities
than for  incineration  facilities  because  ETD does not  produce  fluid or air
pollution.  ETD facilities are also cheaper to construct  than  incinerators  or
autoclaves   with  shredding   capability.   ETD  also  renders   medical  waste
unrecognizable  and thus more acceptable for landfills and reduces the volume of
waste as well. It may also facilitate  recycling of  polypropylene  plastics and
some  of the  ETD-treated  waste  may be  used  for  fuel  in  "waste-to-energy"
electrical plants.

FACILITIES

         We  lease  office  space  for our  corporate  offices  in Lake  Forest,
Illinois.  We own or lease  three  ETD  treatment  facilities,  12  incineration
facilities, 14 autoclave facilities,  three facilities that use a combination of
these methods,  and three facilities that use other methods. We also operate one
ETD treatment facility through Medam, our Mexican joint venture company.  All of
our  treatment  facilities  also serve as collection  sites.  We own or lease 93
additional  transfer and collection sites. We consider these facilities adequate
for our present and anticipated needs. Substantially all of these facilities are
pledged to secure the indebtedness under our credit facility.

         We do not own or operate  any  landfills  or any other type of disposal
site. After treatment,  all remaining waste materials are transported to parties
unaffiliated with us for permanent disposal.

COMPETITION

         The medical waste services industry is highly competitive.  It consists
of many  different  types of  service  providers,  including  a large  number of
regional and local companies. Another major source of competition is the on-site
treatment  of  medical  waste by some  large-quantity  generators,  particularly
hospitals. We believe this internal capacity represents approximately 35% of the
total industry and that we have approximately a 22% share of the industry.


<PAGE>


         In addition,  we face potential  competition  from  businesses that are
attempting  to  commercialize   alternate  treatment  technologies  or  products
designed  to reduce or  eliminate  the  generation  of  medical  waste,  such as
reusable or degradable medical products.

         We  compete  for  service   agreements   primarily   on  the  basis  of
cost-effectiveness,  quality of service and geographic location. We also attempt
to compete by demonstrating to customers that we can do a better job in reducing
their potential  liability.  Our ability to obtain new service agreements may be
limited  by the fact that a  potential  customer's  current  vendor  may have an
excellent service history or a long-term service contract or may offer prices to
the potential customer that are lower than ours.

GOVERNMENTAL REGULATION

         We operate  within the  medical  waste  management  industry,  which is
subject to extensive and frequently  changing federal,  state and local laws and
regulations.  This statutory and regulatory framework imposes compliance burdens
and risks on us,  including  requirements  to  obtain  and  maintain  government
permits. These permits grant us the authority:

         o    to construct and operate treatment and transfer facilities,

         o    to  transport  medical   waste   within   and   between   relevant
              jurisdictions, and

         o    to handle particular regulated substances,

among other things. Our permits must be periodically  renewed and are subject to
modification or revocation by the regulatory  authority.  We are also subject to
regulations  that  govern the  definition,  generation,  segregation,  handling,
packaging, transportation,  treatment, storage and disposal of medical waste. We
are also subject to extensive regulations designed to minimize employee exposure
to medical waste. In addition, we are subject to foreign laws and regulations.

FEDERAL REGULATION

         There are at least  four  federal  agencies  that have  authority  over
medical  waste.  These  agencies  are the  EPA,  OSHA,  the U.S.  Department  of
Transportation  and the U.S. Postal  Service.  These agencies  regulate  medical
waste under a variety of statutes and regulations.

         Medical Waste Tracking Act of 1988. In the late 1980s, the EPA outlined
a two-year  demonstration  program pursuant to the Medical Waste Tracking Act of
1988 (MWTA),  which was added to the Resource  Conservation  and Recovery Act of
1976. The MWTA was adopted in response to health and environmental concerns over
infectious   medical  waste  after  medical  waste  washed  ashore  on  beaches,
particularly  in New York and New  Jersey,  during  the  summer of 1988.  Public
safety concerns grew following  media reports of careless  management of medical
waste.  The MWTA was intended to be the first step in addressing these problems.
The primary  objective of the MWTA was to ensure that medical  wastes which were
generated in a covered state and which posed environmental  problems,  including
an unsightly appearance, were delivered to disposal or treatment facilities with
minimum exposure to waste management workers and the public. The MWTA's tracking
requirements included accounting for all waste transported and imposed civil and
criminal sanctions for violations.

         In regulations implementing the MWTA, the EPA defined medical waste and
established guidelines for its segregation,  handling, containment, labeling and
transport.  Under the MWTA,  the EPA was to deliver three reports to Congress on
different   aspects  of  medical  waste   management  and  the  success  of  the
demonstration  program for tracking  medical  waste.  Two of these  reports were
completed;  the  third  report  has not yet been  issued.  The  third  report is
expected to cover the use of alternative  medical waste treatment  technologies,
including our ETD technology. It is possible that this third report will contain
findings  or make  recommendations  that are  unfavorable  to our  business  and
technology.


<PAGE>


         The  MWTA   demonstration   program  expired  in  1991,  but  the  MWTA
established a model followed by many states in developing their specific medical
waste regulatory frameworks.

         Clean Air Act Regulations.  In August 1997, the EPA adopted regulations
under the Clean Air Act  Amendments  of 1990 that limit the  discharge  into the
atmosphere  of  pollutants  released  by  medical  waste   incineration.   These
regulations  required  every  state to submit to the EPA for  approval a plan to
meet minimum  emission  standards for these  pollutants.  See "--State and Local
Regulation." The EPA estimates that of the approximately 1,100 small, 690 medium
and 460 large medical waste incinerators in operation in May 1996, approximately
83-90% of the small  incinerators,  60-95% of the medium  incinerators and up to
35% of the large  incinerators  will be closed as hospitals  seek less expensive
methods of medical waste  disposal  rather than incur the cost of installing the
necessary air pollution control systems to comply with the EPA's regulations. We
currently  operate 10  incinerators.  Because our facilities are modern and well
maintained,  we believe  that our  capital  expenditures  required  to bring our
incinerators   into  compliance   with  these  new  regulations   will  only  be
approximately  $4.0 million.  We believe that we will be successful in obtaining
all  necessary  federal  and state  permits to  continue  the  operation  of our
incinerators.   The  Natural   Resources   Defense  Council,   an  environmental
organization,  has sued the EPA  challenging  the validity of its regulations on
the grounds that the minimum emissions standards are too lenient. If successful,
this  lawsuit  could  result in the EPA's  adoption  of stricter  air  emissions
standards for medical waste  incinerators.  Stricter  emissions  standards could
benefit us if the result is that  hospitals  and other  generators  increase  or
accelerate  their use of outside  medical waste treatment  contractors  like us.
Stricter emissions  standards could also have a material adverse effect on us to
the extent  that we incur  increased  costs to bring our own  incinerators  into
compliance with the more stringent standards. We might also face price increases
for   treatment  of  medical   waste  that  we  deliver  to  other  parties  for
incineration.

         Occupational Safety and Health Act of 1970. The Occupational Safety and
Health  Act of 1970  authorizes  OSHA to issue  occupational  safety  and health
standards.  OSHA  regulations are designed to minimize the exposure of employees
to hazardous work environments. Various standards apply to our operations. These
regulations govern, among other things:

         o    exposure  to bloodborne pathogens and other potentially infectious
              materials;

         o    lock out/tag out procedures;

         o    medical surveillance requirements;

         o    use of respirators and personal protective equipment;

         o    emergency planning;

         o    hazard communication;

         o    noise;

         o    ergonomics; and

         o    forklift safety.

We are subject to unannounced OSHA safety inspections at any time.

         Our  employees  are  required  by our  policy to receive  new  employee
training,  annual  refresher  training and training in their specific  tasks. As
part of our  medical  surveillance  program,  employees  receive  pre-employment
physicals,  including drug testing,  annually-required  medical surveillance and
exit physicals. We also subscribe to a drug-free workplace policy.

         Resource  Conservation  and  Recovery  Act of 1976.  In 1976,  Congress
passed RCRA as a response to growing public  concern about  problems  associated
with the handling and disposal of solid and hazardous  waste.  RCRA required the
EPA to promulgate  regulations  identifying  hazardous wastes. RCRA also created
standards for the generation, transportation, treatment, storage and disposal of
solid and hazardous wastes. These standards included a documentation program for
the  transportation  of  hazardous  wastes  and a permit  system  for  solid and
hazardous  waste disposal  facilities.  Medical wastes are currently  considered

<PAGE>


non-hazardous solid wastes under RCRA. However,  some substances collected by us
from some of our customers,  including  photographic fixer developer  solutions,
lead foils and dental amalgam, are considered hazardous wastes.

         We use landfills  operated by parties  unrelated to us for the disposal
of treated  medical waste from two of our ETD facilities and for the disposal of
incinerator ash and autoclaved waste.  Waste is not regulated as hazardous under
RCRA unless it contains hazardous  substances  exceeding specific  quantities or
concentration  levels,  meets  specified  descriptions,   or  exhibits  specific
hazardous characteristics. Following treatment, waste from our ETD and autoclave
facilities is disposed of as nonhazardous waste. At our incineration facilities,
we test  ash from the  incineration  process  to  determine  whether  it must be
disposed of as hazardous waste.

         We employ quality control  measures to check incoming medical waste for
specific types of hazardous substances. Our customer agreements also require our
customers to exclude  different  kinds of hazardous  substances  or  radioactive
materials  from the medical  waste they  provide us. We use a different  type of
contract  for the  relatively  small  number of  customers  from whom we pick up
hazardous wastes.

         DOT  Regulations.   The  U.S.  Department  of  Transportation  has  put
regulations   into  effect   under  the   Hazardous   Materials   Transportation
Authorization  Act of 1994.  These  regulations  require us to package and label
medical  waste  in  compliance  with  designated   standards,   and  incorporate
bloodborne  pathogens standards issued by OSHA. Under these standards,  we must,
among other  things,  identify our packaging  with a "biohazard"  marking on the
outer packaging,  and our medical waste container must be sufficiently rigid and
strong  to  prevent  tearing  or  bursting,   and  must  be  puncture-resistant,
leak-resistant, properly sealed and impervious to moisture.

         DOT  regulations   also  require  that  a  transporter  be  capable  of
responding  on a  24-hour-a-day  basis in the event of an  accident,  spill,  or
release to the  environment  of a hazardous  material.  We have  entered into an
agreement with CHEMTREC,  an organization  that provides 24-hour emergency spill
notification  in the United  States and Canada,  to provide  this service and we
also have agreements with several  emergency  response  organizations to provide
spill cleanup services in some of our service areas.

         Our drivers are trained on topics such as safety,  hazardous materials,
medical  waste,  hazardous  chemicals and infectious  substances.  Employees are
trained to deal with emergency spills and releases of hazardous  materials,  and
we have a written  contingency plan for these events. Our vehicles are outfitted
with spill control equipment and the drivers are trained in its use.

         Comprehensive Environmental Response, Compensation and Liability Act of
1980. The Comprehensive  Environmental Response,  Compensation and Liability Act
of 1980  established  a  regulatory  and  remedial  program to  provide  for the
investigation  and  cleanup of  facilities  that have  released  or  threaten to
release hazardous substances into the environment. CERCLA and state laws similar
to it may impose strict,  joint and several  liability on the current and former
owners and operators of facilities  from which releases of hazardous  substances
have occurred and on the generators and transporters of the hazardous substances
that come to be located at these facilities.  Responsible  parties may be liable
for  substantial  site  investigation  and cleanup  costs and  natural  resource
damages,  regardless  of  whether  they  exercised  due care and  complied  with
applicable laws and regulations.  If we were found to be a responsible party for
a  particular  site,  we  could  be  required  to pay  the  entire  cost of site
investigation  and cleanup,  even though other parties also may be liable.  This
would be the case if we were unable to identify other responsible parties, or if
those parties were financially unable to contribute money to the cleanup.

         United States Postal  Service.  We have obtained a permit from the U.S.
Postal Service to conduct our "mail-back"  program,  pursuant to which customers
mail approved "sharps" (needles,  knives,  broken glass and the like) containers
directly to our treatment facilities.

STATE AND LOCAL REGULATION

         We  conduct  business  in  numerous  states.  Each  state  has  its own
regulations  related to the handling,  treatment  and storage of medical  waste.
Although  there  are  many   differences   among  the  various  state  laws  and
regulations,  many states have  followed the medical  waste model under the MWTA
and are implementing programs under RCRA. In each of the states where we operate
a  treatment  facility  or a transfer  station,  we are  required to comply with

<PAGE>


numerous state and local laws and  regulations as well as our operating plan for
each site. State agencies  involved in regulating the medical waste industry are
frequently the departments of health and environmental  protection agencies.  In
addition,  many local  governments have ordinances,  local laws and regulations,
such as zoning and health regulations, that affect our operations.

         In recent years, a number of communities have instituted "flow control"
requirements,  which require that waste  collected  within a particular  area be
deposited at a designated  facility.  In May 1994, the U.S.  Supreme Court ruled
that a flow control  ordinance was inconsistent  with the Commerce Clause of the
Constitution of the United States.  A number of lower federal courts have struck
down similar measures.  The U.S. Congress may consider legislation that would at
least partially overturn these court decisions.

         Similarly,  the U.S. Supreme Court has consistently held that state and
local  measures  that  seek to  restrict  the  importation  of  waste  into  the
particular  jurisdiction,  or to  tax  imported  waste  at a  higher  rate,  are
unconstitutional.  To date,  congressional  efforts  to enable  states to impose
differential taxes on out-of-state waste or restrict waste importation have been
unsuccessful.

         In the absence of federal  legislation,  various local laws that direct
waste to  designated  facilities,  or limit or tax the  interstate  movement  of
waste, may continue to be invalidated by the courts. If the U.S. Congress adopts
legislation   allowing  for  specific  types  of  flow  control  or  authorizing
restriction  on the  importation  of waste,  or if valid  legislation  affecting
interstate transportation of waste is adopted at the federal or state level, our
business,  financial  condition  and results of  operations  could be materially
adversely affected.  In addition,  we cannot assure you that municipalities will
not pass  ordinances  which  effectively  block or discourage us from locating a
treatment or transfer facility within their limits.

         States usually regulate medical waste as a solid or "special" waste and
not as a hazardous waste under RCRA. State definitions of medical waste include:

         o    microbiological waste (cultures and stocks of infectious agents);

         o    pathology  waste  (human  body  parts from surgical procedures and
              autopsies);

         o    blood and blood products; and

         o    sharps.

Most states  require  segregation  of  different  types of medical  waste at the
hospital or other location where they were created. A majority of states require
that  the  universal  biohazard  symbol  or a  label  appear  on  medical  waste
containers. Storage regulations may apply to the party generating the waste, the
treatment facility,  the transport vehicle, or all three.  Storage rules seek to
identify and secure the storage area for public  safety as well as set standards
for the manner and length of storage.  Many states require employee training for
safe environmental  cleanup through emergency spill and  decontamination  plans.
Many states also  require  that  transporters  carry  spill  equipment  in their
vehicles.  Those states whose regulatory framework relies on the MWTA model have
tracking  document  systems in place.  Some  states  (Washington,  for  example)
regulate the prices we may charge.

         We maintain numerous  governmental  permits and licenses to conduct our
business.  Our permits vary from state to state based upon our activities within
that state and on the  applicable  state and local laws and  regulations.  These
permits include:

         o    transport  permits  for  solid  waste, medical waste and hazardous
              substances;

         o    permits to construct and operate treatment facilities;

         o    permits to construct and operate transfer stations;

         o    permits  governing discharge of sanitary water and registration of
              equipment under air regulations;

         o    approvals for the use of ETD to treat medical waste; and

         o    various business operator's licenses.

<PAGE>

         We believe that we are currently in compliance in all material respects
with our permits and with applicable laws and regulations.

         Pursuant to medical waste incinerator regulations adopted by the EPA in
1997,  every state was required by September 1998 to adopt a plan to comply with
federal guidelines which, among other things, limit the release of some airborne
pollutants from medical waste incinerators to levels prescribed by the EPA. Each
state's  implementation  plan  must be at least as  restrictive  as the  federal
emissions  standards.  If a state in which we operate an incinerator adopts more
stringent  limits  than  the  federal  emissions  standards,  it  could  be very
expensive  for us to bring our  incinerator  into  compliance  with the  state's
requirements. See "--Governmental Regulation--Federal  Regulation--Clean Air Act
Regulations."

         Subsequent to the issuance of our original  license for our Woonsocket,
Rhode Island treatment  facility,  the State of Rhode Island enacted legislation
that  required  us to  obtain  an  additional  license  for  our  medical  waste
management operations.  We applied for but have not yet received this additional
license.  Until regulatory  action is taken on this additional  license,  we are
being permitted to continue to operate under our current license. Denial of this
additional  license could result in us being required to cease our operations in
Rhode  Island  and it could  have a  material  adverse  effect on our  business,
financial condition and results of operations.

         Our ETD treatment  technology  has not been approved in all states.  We
have received  permits or been granted  legislative  approval to operate our ETD
treatment  technology in 15 states,  with additional  applications  pending.  We
cannot be sure, however,  that our treatment technology will be approved for the
treatment of medical waste in each state or other jurisdiction where we may want
to use it. Our  inability to obtain  regulatory  approval  could have a material
adverse effect on our business, financial condition and results of operations.

FOREIGN AND TERRITORIAL REGULATION

         We  presently  conduct  business in several  provinces  in Canada.  Our
activities in British Columbia are governed at the federal level by the Canadian
Transportation of Dangerous Goods Act and the Canadian Environmental  Protection
Act,  and at the  provincial  level  by  comparable  legislation.  The  Canadian
Environmental  Protection Act  regulates,  among other things,  the  transborder
movement of medical waste.  The federal  Transportation  of Dangerous  Goods Act
regulates the movement of dangerous goods, including infectious  substances,  by
all modes of  transportation.  It imposes  joint and  several  liability  on all
persons who are responsible  for, or who caused or contributed to the release of
any  dangerous  substance  into  the  environment.  Any  business  engaged  in a
regulated activity is presumed to be liable for any release, unless the business
can demonstrate that it acted reasonably.

         Provincial legislation typically regulates the storage,  transportation
and disposal of waste, including biomedical waste, and imposes strict, joint and
several liability for all the costs of cleanup of contaminated sites. We believe
that  we  have  obtained  all  permits   required  by  federal  and   provincial
legislation.

         We presently  conduct business in the United States territory of Puerto
Rico.  Our storage and  treatment  activities in Puerto Rico are governed at the
territorial level by the Puerto Rico Environmental Quality Board, while the U.S.
Department of  Transportation  regulates the  transportation of medical waste in
Puerto  Rico  and  applies  the  regulations  promulgated  under  the  Hazardous
Materials  Transportation  Authorization Act of 1994. We believe that we have in
place all permits required by federal and territorial  legislation applicable to
Puerto Rico.

         We  cannot  give  you any  assurances,  however,  that  we will  not be
required  in the future to pay for  cleanup  costs  incurred  under  Canadian or
Puerto Rican environmental laws, or that we will not incur additional  operating
or capital costs required by changes to laws, regulations or permits.

         We also conduct  business in Mexico through our joint  venture,  Medam,
which  collects  medical waste and transports it for treatment to a new facility
close to Mexico  City.  Medical  waste is  regulated  in Mexico as a category of
waste  distinct  from  solid or  "municipal"  waste.  Mexican  regulations  have
established  collection  schedules  that  are  specific  to the type and size of
generator.  The Secretariat of the Environment,  Natural Resources and Fisheries


<PAGE>


is responsible  for the  enforcement  of Mexico's  medical waste law. We believe
that  our  joint  venture  operations  in  Mexico  are in  compliance  with  all
applicable laws, rules and regulations.

         If we expand our operations into other foreign  jurisdictions,  we will
be  required  to  comply  with  the  laws  and  regulations  of  each  of  these
jurisdictions.

PERMITTING PROCESS

         Each state in which we  currently  operate,  and each state in which we
may  operate in the future,  has a specific  permitting  process.  After we have
identified a geographic  area in which we want to locate a treatment or transfer
facility, we identify one or more locations for a potential new site. Typically,
we will develop a site  contingent  on obtaining  zoning  approval and local and
state operating authority. Most communities rely on state authorities to provide
operating rules and safeguards for their  community.  Usually the state provides
public notice of the project and, if enough public  interest is shown,  a public
hearing  may  be  held.  If  we  are   successful  in  meeting  all   regulatory
requirements,  the state may issue a permit to construct the treatment  facility
or transfer station. Once the facility is constructed, the state may again issue
public  notice of its intent to issue an  operating  permit  and may  provide an
opportunity for public opposition or other action that may impede our ability to
construct  or  operate  the  planned  facility.  Permitting  for  transportation
operations   frequently  involves   registration  of  vehicles,   inspection  of
equipment, and background investigations on our officers and directors.

         We have been  successful in obtaining  permits for our current  medical
waste transfer,  treatment and processing  facilities and for our transportation
operations.  Several of our past attempts to construct and operate medical waste
treatment  facilities,  however, have met with significant community opposition.
In some of these cases, we have withdrawn our permit application.

PATENTS AND PROPRIETARY RIGHTS

         We consider the  protection  of our  technology  to be important to our
business.  Our  policy is to  protect  our  technology  by a  variety  of means,
including  applying  for  patents  in the  United  States  and in  some  foreign
countries.

         We hold  nine  United  States  patents  relating  to the ETD  treatment
process and other aspects of  processing  medical  waste.  We have filed or have
been  assigned  patent  applications  in several  foreign  countries and we have
received patents in Russia, Hungary,  Canada, Mexico and Australia. We also hold
one United  States  patent for our reusable  container,  which is used under the
registered trademark Steri-Tub(R).

         In November  1995, we entered into a  cross-license  agreement with IIT
Research Institute (IITRI). Under this agreement,  IITRI granted us an exclusive
royalty-free  license in North  America,  portions of Europe  (including  all 15
member  countries  of  the  European  Union),  Japan  and  other  industrialized
countries  throughout the world to use and  commercialize  various patent rights
and know-how held by IITRI relating to the use of radio-frequency  technology in
the treatment of medical waste, and we granted to IITRI a royalty-free exclusive
license  in the  remaining  countries  of the  world  to use  and  commercialize
specified  corresponding  patent  rights and know-how  held by us. The agreement
continues  until the  expiration  of the  last-to-expire  of any of the  subject
patents held by either IITRI or us.

         The term of the  first-to-end  of our existing  United  States  patents
relating to our ETD  treatment  process will end in October 2009 at the earliest
or in September  2010 at the latest,  and the term of the  last-to-end  of these
patents will end in January 2015.

         In addition, we own additional technology relating to the processing of
medical waste and other health care waste that we believe is patentable.  We are
evaluating the technology to determine  whether to file for patent protection on
it.

         There  can  be  no  assurance   that  any  pending  or  future   patent
applications  will be  granted;  that any issued  patents  will  provide us with
competitive  advantages;  that  our  patents  will  not be  challenged  by other
parties;  or that the existing or future  patents of other parties will not have
an adverse effect on our ability to carry out our business.  In addition,  there

<PAGE>


can be no assurance that other companies will not independently  develop similar
processes or avoid our patents.  Litigation or administrative proceedings may be
necessary  to enforce the  patents  issued to us or to  determine  the scope and
validity  of  others'  proprietary  rights.  Any  litigation  or  administrative
proceeding  could  result  in  substantial  cost  to us and  distraction  of our
management.  A ruling against us in any litigation or administrative  proceeding
could have a material  adverse effect on our business,  financial  condition and
results of operations.

         Our commercial  success may also depend on our not  infringing  patents
issued to other  parties.  There can be no assurance  that patents  belonging to
other parties will not require us to alter our processes, pay licensing fees, or
cease development of our current or future processes. In addition,  there can be
no assurance that we would be able to license the technology  rights that we may
require at a reasonable  cost or at all. If we could not obtain a license to any
infringing  technology  that we currently use, it could have a material  adverse
effect on our  business,  financial  condition  and  results of  operations.  In
addition,  to determine the priority of inventions or patent applications we may
have to participate in proceedings  before the U.S. Patent and Trademark  Office
or in  proceedings  before  foreign  agencies,  any of  which  could  result  in
substantial costs to us and distraction of our management.

         We  own  federal  registrations  of  the  trademarks   "Steri-Fuel(R),"
"Steri-Plastic(R),"  "Steri-Tub(R),"  and  "Steri-Cement(R),"  the service  mark
Stericycle(R)  and a service mark  consisting  of six green disks that we use in
the United States (which appears on the front of this prospectus).  There can be
no assurance  that our  registered or  unregistered  trademarks or service marks
will not infringe upon the rights of other  parties.  The  requirement to change
any  trademark,  service  mark or trade name of ours could result in the loss of
any  goodwill  associated  with that  trademark,  service mark or trade name and
could entail significant expense.

         We also rely on unpatented and unregistered trade secrets,  trademarks,
proprietary know-how and continuing technological  innovation. We try to protect
this  information,  in part, by  confidentiality  agreements with our employees,
vendors and  consultants.  There can be no assurance that these  agreements will
not be breached, that we would have adequate remedies for any breach or that our
trade  secrets or know-how  will not  otherwise  become  known or  independently
discovered by other parties.

EMPLOYEES

         As of November  30,  1999,  we had 2,165  full-time  and 120  part-time
employees. Approximately 37 of our drivers and transportation helpers at our New
York City  facilities and drivers at Med-Tech's  Montreal,  Quebec  facility are
covered by collective bargaining  agreements with the International  Brotherhood
of Teamsters. Our production and maintenance employees at our Morton, Washington
facility were previously represented by the Teamsters but voted in April 1998 to
decertify the union. Approximately 100 former employees of the BFI medical waste
business  that are now our  employees  are  covered by a total of 16  collective
bargaining  agreements  with local  Teamster  unions.  Two of these  agreements,
covering a total of six BFI medical waste  employees,  have expiration  dates of
September  30, 1999 and  October 31,  1999.  Both of these  agreements  are area
agreements  involving  multiple  employers  and  management  expects  both to be
renewed  without  any  work  stoppage  or other  disruption.  The  remaining  14
agreements  expire at various  dates from April 2000 to April 2004.  We consider
our employee relations to be satisfactory.

POTENTIAL LIABILITY AND INSURANCE

         The medical waste industry  involves  potentially  significant risks of
statutory,   contractual,  tort  and  common  law  liability  claims.  Potential
liability claims could involve, for example:

         o    cleanup costs;

         o    personal injury;

         o    damage to the environment;

         o    employee matters;

         o    property damage; and

<PAGE>



         o    alleged  negligence  or  professional  errors  or omissions in the
              planning or performance of work.

         We could also be  subject  to fines or  penalties  in  connection  with
violations of regulatory requirements.

         We carry  $26.0  million of  liability  insurance  (including  umbrella
coverage), and under a separate policy, $10.0 million of aggregate pollution and
legal  liability  insurance  ($5.0  million  per  incident),  which we  consider
sufficient  to meet  regulatory  and  customer  requirements  and to protect our
employees,  assets and operations.  Our pollution  liability  insurance excludes
liabilities under CERCLA. There can be no assurance that we will not face claims
under CERCLA or similar state laws resulting in substantial  liability for which
we are uninsured and which could have a material adverse effect on our business,
financial condition and results of operations.

         Our  insurance  programs  utilize large  deductible  plans offered by a
commercial  insurance  company.  Large deductible plans allow us the benefits of
cost-effective  risk financing while protecting us from  catastrophic  risk with
specific stop loss insurance limiting the amount of self-funded exposure for any
one loss and aggregate stop loss insurance  limiting the  self-funding  exposure
for any one year.

LEGAL AND OTHER PROCEEDINGS

         We operate in a highly regulated industry and are exposed to regulatory
inquiries  or  investigations  from  time to time.  Government  authorities  can
initiate  investigations  for a variety of  reasons.  We have been  involved  in
several legal and administrative proceedings that have been settled or otherwise
resolved on terms  acceptable to us, without having a material adverse effect on
our  business.  From time to time,  we may  consider it more  cost-effective  to
settle  proceedings  than  to  become  involved  in  costly  and  time-consuming
administrative  actions  or  litigation.  We are also a party to  various  legal
proceedings  arising in the  ordinary  course of  business.  We believe that the
resolution of these other matters will not have a material adverse effect on us.

         In April 1997, a worker at our Morton,  Washington  treatment  facility
was diagnosed with active tuberculosis. Testing revealed two additional cases of
active  tuberculosis and 15 additional  workers who tested positive for exposure
to tuberculosis.  Officials of the Washington Departments of Health and of Labor
and Industries have concluded that workers were probably exposed to tuberculosis
bacteria  from the medical  waste being  processed  at the Morton  facility.  We
believe that the actual source of exposure has not been determined.  However, we
have complied with the  recommendations of all regulatory  authorities to outfit
the facility's workers with personal protective equipment.  In addition, we have
complied with  governmental  recommendations  to modify  equipment at the Morton
facility.  We are  also  taking  these  actions,  as  applicable,  at our  other
treatment facilities.  The safety measures being taken include those recommended
by the National Institute for Occupational  Safety and Health in a report issued
in December  1998.  While future claims are  possible,  to date we have not been
subject to any civil  proceedings by the affected  employees as a result of this
incident, which the Washington Department of Labor and Industries has determined
is covered by the state workers' compensation program.

         In 1998, BFI filed a plea agreement with the U.S. Department of Justice
regarding  possible  violations  of the Clean Water Act by the BFI medical waste
business  arising from its Washington,  D.C.  treatment  facility.  The possible
violations arose from the wastewater  treatment system used to contain and treat
all  wastewater  produced by the facility.  BFI pled guilty to three  violations
under the  Clean  Water Act and  agreed  to pay  $1,500,000  in fines and make a
$100,000 community service  contribution.  These obligations have been satisfied
and the Washington, D.C. facility was closed in 1997.

         In 1997, the BFI medical waste business  voluntarily  ceased  operating
its  incinerator  at the  Bronx,  New  York  facility  due to its  inability  to
consistently  meet its permit  requirements.  In 1999, BFI executed an agreement
with the New York  Department  of  Environmental  Conservation  to dismantle and
dispose of the  incinerator  of the BFI medical  waste  business  located in the
Bronx,  New York, pay a civil penalty of $50,000,  institute a pilot program for
the use of natural gas powered trucks within six months of the date of the order
and establish and fund an Environmental  Benefit Program for projects benefiting
the  community and the  environment  in the amount of $200,000 to be paid within
two years of the date of the  agreement.  The  agreement  also  allows us, on an
interim  basis,  to continue to operate the former BFI medical  waste  business,
collection and transfer operation at the same site.

<PAGE>

                                   MANAGEMENT

         The following table contains  certain  information  with respect to our
directors, executive officers and certain key employees:

<TABLE>

NAME                                               AGE       POSITION
- ----                                               ---       --------

<S>                                                <C>       <C>
Mark C. Miller..............................       43        President, Chief Executive Officer and Director
Richard T. Kogler...........................       40        Chief Operating Officer
Anthony J. Tomasello........................       53        Executive Vice President and Chief Technical Officer
Frank J.M. ten Brink........................       42        Vice President, Finance and Chief Financial Officer
Michael J. Bernert..........................       45        Vice President, Sales and Marketing
Joel P. Wilson..............................       40        Vice President, Operations
Jack W. Schuler.............................       58        Chairman of the Board of Directors
Rod F. Dammeyer.............................       58        Director
Patrick F. Graham...........................       58        Director
John Patience...............................       51        Director
Peter Vardy.................................       68        Director
L. John Wilkerson, Ph.D.....................       55        Director
John P. Connaughton.........................       33        Director
Thomas R. Reusche...........................       44        Director

</TABLE>

         Our  directors  are  elected  annually  to serve  until the next annual
meeting and until their successors have been elected and qualified. Our officers
serve at the discretion of our Board of Directors. Thomas R. Reusche and John P.
Connaughton  joined our Board of Directors in November 1999 as the selections of
Bain Capital and Madison  Dearborn,  respectively,  pursuant to the terms of the
preferred  stock purchase  agreement by which we issued and sold our convertible
preferred  stock to  investment  funds  associated  with Bain  Capital  and with
Madison  Dearborn.  See  "Description  of Capital  Stock--Convertible  Preferred
Stock."

         Mark C. Miller has served as President and Chief Executive  Officer and
a director  since joining us in May 1992.  From May 1989 until he joined us, Mr.
Miller  served  as Vice  President  for the  Pacific,  Asia  and  Africa  in the
International Division of Abbott Laboratories, which he joined in 1976 and where
he held a number of  management  and  marketing  positions.  He is a director of
Affiliated  Research  Centers,   Inc.,  which  provides  clinical  research  for
pharmaceutical  companies and is a director of Lake Forest Hospital.  Mr. Miller
received a B.S.  degree in computer  science  from Purdue  University,  where he
graduated Phi Beta Kappa.

         Richard T.  Kogler  joined us as Chief  Operating  Officer in  December
1998.  From May 1995 through  October 1998,  Mr.  Kogler was Vice  President and
Chief  Operating  Officer of American  Disposal  Services,  Inc.,  a solid waste
management  company.  From October 1984 through May 1995, Mr. Kogler served in a
variety of management positions with Waste Management,  Inc. Mr. Kogler received
a B.A. degree in chemistry from St. Louis University.

         Anthony J.  Tomasello  has served as our Executive  Vice  President and
Chief  Technical  Officer since January 1999 and  previously  had served as Vice
President,  Operations since joining us in August 1990. For eight years prior to
joining  us, Mr.  Tomasello  was  President  and Chief  Operating  Officer of Pi
Enterprises  and Orbital  Systems,  companies  providing  process and automation
services. From 1980 to 1982, he served as Vice President of Operations for Spang
and Company,  an operating  service firm  specializing in resource  recovery and
recycling for manufacturing  and process  industries.  Mr. Tomasello  received a
B.S. degree in mechanical engineering from the University of Pittsburgh.

         Frank J.M.  ten Brink has  served as our Vice  President,  Finance  and
Chief Financial Officer since June 1997. From 1991 until 1996 he served as Chief
Financial  Officer of Hexacomb  Corporation,  and from 1996 until joining us, he
served as Chief Financial Officer of Telular Corporation. Prior to 1991, he held
various   financial   management   positions  with  Interlake   Corporation  and
Continental  Bank of  Illinois.  Mr.  ten  Brink  received  a B.B.A.  degree  in
international  business and a M.B.A.  degree in finance from the  University  of
Oregon.


<PAGE>

         Michael  J.  Bernert  has  served  as our  Vice  President,  Sales  and
Marketing, with responsibility for sales and marketing throughout North America,
since January 1999.  Since joining us in 1992, Mr. Bernert had held the position
of Vice President, Eastern Region. Prior to joining us in 1992, he held a series
of management  positions with Abbott  Laboratories.  Mr. Bernert received a B.A.
degree in economics from Brown University and a M.B.A.
degree from the University of Dallas.

         Joel P.  Wilson  has  served as our Vice  President,  Operations,  with
responsibility  for operations  throughout  North  America,  since January 1999.
Since joining us in 1991,  Mr. Wilson had held the positions of Vice  President,
Midwest Region, Director of Engineering,  General Manager of the Midwest Region,
General  Manager of  Operations  and  District  Manager of  Wisconsin.  Prior to
joining  us, he held  several  management  positions  with  Orbital  Systems and
Orbital Engineering. Mr. Wilson received a B.S. degree in civil engineering from
Brigham Young University.

         Jack W.  Schuler has served as our  Chairman of the Board of  Directors
since  January 1990.  From January 1987 to August 1989,  Mr.  Schuler  served as
President  and Chief  Operating  Officer of Abbott  Laboratories,  a diversified
health  care  company,  where he served as a director  from April 1985 to August
1989. Mr. Schuler serves as a director of Chiron  Corporation,  Medtronic,  Inc.
and Ventana Medical Systems, Inc. He is a co-founder of Crabtree Partners LLC, a
private investment firm in Lake Forest, Illinois, which was formed in June 1995.
Mr.  Schuler  received  a B.S.  degree  in  mechanical  engineering  from  Tufts
University and a M.B.A.  degree from the Stanford  University Graduate School of
Business Administration.

         Rod F. Dammeyer has served as a director  since January 1998. He is the
Managing  Partner of Equity Group Corporate  Investments and Vice Chairman and a
director of Anixter  International  Inc., where he has been employed since 1985.
Mr. Dammeyer is a director of Antec Corporation,  CNA Surety Corporation,  Grupo
Azucarero  Mexico,  IMC  Global,  Inc.,  Jacor   Communications,   Inc.,  Matria
Healthcare, Inc., Metal Management, Inc., TeleTech Holdings, Inc. and Transmedia
Network,  Inc., and a trustee of Van Kampen Investments,  Inc. closed-end funds.
He received a B.S. degree from Kent State University.

         Patrick F. Graham has served as a director  since May 1991.  Mr. Graham
is a Vice President of A. T. Kearney and is the head of Global Strategy Practice
and a director of  Intelidata  Technologies,  Inc. He was a co-founder of Bain &
Company, Inc., a management consulting firm in Boston,  Massachusetts,  where he
served in a number of positions from 1973 to 1997. He received a B.A.  degree in
economics  from Knox College and a M.B.A.  degree from the  Stanford  University
Graduate School of Business Administration.

         John Patience has served as a director since our incorporation in March
1989.  He is a  co-founder  and  partner  of  Crabtree  Partners  LLC, a private
investment  firm in Lake Forest,  Illinois,  which was formed in June 1995. From
January  1988 to March 1995,  Mr.  Patience  was a general  partner of Marquette
Venture Partners, L.P., a venture capital fund which he co-founded and which led
our initial capitalization. Mr. Patience is a director of TRO Learning, Inc. and
Ventana  Medical  Systems,  Inc.  He received  B.A.  and B.L.  degrees  from the
University of Sydney in Sydney,  Australia, and a M.B.A. degree from the Wharton
School of Business of the University of Pennsylvania.

         Peter  Vardy has  served  as a  director  since  July  1990.  He is the
Managing  Director of Peter Vardy & Associates,  an international  environmental
consulting firm in Chicago,  Illinois, which he founded in June 1990. From April
1973 to May 1990, Mr. Vardy served at Waste Management, Inc., a waste management
services company, where he was Vice President, Environmental Management. He is a
director of EMCON, which he co-founded in 1971. Mr. Vardy received a B.S. degree
in geological engineering from the University of Nevada.

         L. John Wilkerson,  Ph.D., has served as a director since July 1992. He
is a consultant to The Wilkerson  Group, a health care products  consulting firm
in New York, New York. Dr.  Wilkerson has served with The Wilkerson  Group since
1980 and prior to its  acquisition  by IBM  Corporation  was its  Chairman.  Dr.
Wilkerson  also serves as a general  partner of Galen  Partners,  L.P. and Galen
Partners  International,  L.P., affiliated health care venture capital funds. He
is a director of British  Biotech  Plc. and several  privately  held health care
companies. Dr. Wilkerson received a B.S. degree in biological sciences from Utah
State  University  and a Ph.D.  degree in  managerial  economics  and  marketing
research from Cornell University.

         John P.  Connaughton  has served as a director  since November 1999. He
has been a Managing Director of Bain Capital since 1997 and a member of the firm
since 1989. Prior to joining Bain Capital,  Mr.  Connaughton was a consultant at

<PAGE>


Bain & Company,  where he worked in consumer  products and  healthcare  strategy
consulting.  He is also a director of Epoch Senior  Living and Dade Behring Inc.
Mr.  Connaughton  received a B.S.  degree in  commerce  from the  University  of
Virginia  and a M.B.A.  degree from the Harvard  University  Graduate  School of
Business.

         Thomas R. Reusche has served as a director since November 1999. He is a
Managing Director and co-founder of Madison Dearborn.  Prior to founding Madison
Dearborn,  Mr. Reusche was a senior investment  manager of First Chicago Venture
Capital,  which  comprised  the private  equity  investment  activities of First
Chicago  Corporation,  the  holding  company  parent of First  National  Bank of
Chicago.  Mr.  Reusche  serves on the board of directors of Hines  Horticulture,
Inc., Woods Equipment Company and a number of private companies. He has received
an A.B.  degree  from Brown  University  and a M.B.A.  degree  from the  Harvard
University Graduate School of Business.



<PAGE>


                             EXECUTIVE COMPENSATION

1998 COMPENSATION

         The  following  table  provides  certain   information   regarding  the
compensation  paid to or earned by our President and Chief Executive Officer and
our four other most highly compensated  executive officers (the "named executive
officers") for services rendered in 1998, 1997 and 1996:

<TABLE>

                                            SUMMARY COMPENSATION TABLE
<CAPTION>

                                                                                             LONG-TERM
                                                                                        COMPENSATION AWARDS
                                                                                       NUMBER OF SECURITIES
                                           FISCAL         ANNUAL COMPENSATION               UNDERLYING         ALL OTHER
NAME AND PRINCIPAL POSITION                YEAR        SALARY           BONUS(1)            OPTIONS(2)      COMPENSATION(3)
- ---------------------------                ----        ------           --------            ----------      ---------------


<S>           <C>                       <C>             <C>                <C>                 <C>                 <C>
Mark C. Miller(4)                       1998            $235,000           $30,500             $51,429             $300
President and                           1997             235,000                --              60,000              300
Chief Executive Officer                 1996             148,481                --              41,220              300

Anthony J. Tomasello                    1998             150,000             1,750              22,000              300
Executive Vice President and            1997             150,000                --              20,972              300
Chief Technical Officer                 1996             136,025                --               9,946              300

Frank J.M. ten Brink(5)                 1998             150,000            11,867              20,429              300
Vice President, Finance and             1997              70,619                --              55,000              300
Chief Financial Officer                 1996                  --                --                  --               --

Linda D. Lee(6)                         1998             130,000            13,400              11,286              300
Vice President, Regulatory              1997             130,000                --              16,830              300
Affairs and Quality Assurance           1996             120,583                --               5,086              300

Michael J. Bernert                      1998             127,462            21,569              11,000              300
Vice President,                         1997             123,833                --              21,174              300
Sales and Marketing                     1996             112,615                --              22,101              300

(1)      The bonuses paid during 1998 to Messrs.  Miller,  Tomasello,  ten Brink
         and Bernert and Ms. Lee were awarded  under our cash bonus  program for
         executive officers. Under this program executive officers may elect, in
         advance  of any  award,  to  forego  some  portion  or all of any bonus
         otherwise  payable  under the bonus  program  and  receive  instead  an
         immediately  vested  nonstatutory  stock  option.  The  option  has  an
         exercise  price per share equal to the closing  price of a share of our
         common stock on the bonus award date. For the bonuses paid in 1998, the
         number of shares  for which an option was  granted  was  determined  by
         dividing  the product of four times the amount of the cash bonus that a
         participating executive officer elected to forego by the closing price.
         Without  giving effect to their prior  elections to forego  portions of
         their cash bonuses, the cash bonuses paid to Messrs. Miller,  Tomasello
         and ten Brink and Ms. Lee would have been $70,500, $36,750, $16,867 and
         $28,400,  respectively. Mr. Bernert did not elect to forego any portion
         of his cash bonus.

(2)      The stock options granted during 1998 to Messrs. Miller,  Tomasello and
         ten Brink and Ms. Lee include options to purchase 11,429, 10,000, 1,429
         and 4,286 shares,  respectively.  These options were granted to them in
         lieu of portions of the cash  bonuses  otherwise  payable to them under
         our cash bonus program for executive officers. See Note 1.

(3)      These  amounts  represent  our matching  contribution  under our 401(k)
         plan. For 1996, 1997 and 1998, the matching contribution was 30% of the
         first $1,000 contributed by each participant.

<PAGE>

(4)      The salary for 1996 shown for Mr. Miller  includes  $22,917 paid to him
         in February 1997. This amount represented the additional salary that we
         would  have  paid to Mr.  Miller in 1996 if,  like our other  executive
         officers,  he had  resumed  receiving  his full  base  salary  upon the
         termination  in  mid-October  1996  of  a  voluntary   12-month  salary
         reduction  program  for  management.  The amount in  question  has been
         excluded from the salary for 1997 shown for Mr. Miller.

(5)     Mr. ten Brink joined us in June 1997.

(6)     Ms. Lee resigned as an employee in March 1999.

</TABLE>

1998 STOCK OPTION GRANTS

         The  following  table  provides  certain  information  regarding  stock
options granted to the named executive  officers in 1998. In accordance with the
rules of the SEC, the following  table also  provides the  potential  realizable
value over the term of the options  (i.e.,  the period from the date of grant to
the date of expiration) based upon assumed rates of stock appreciation of 5% and
10%, compounded annually.  These amounts do not represent our estimate of future
appreciation  of  the  price  of  its  common  stock.  We did  not  grant  stock
appreciation rights to any named executive officer in 1998.

<TABLE>

                        OPTION GRANTS IN LAST FISCAL YEAR
<CAPTION>

                                                          INDIVIDUAL GRANTS
                                                          -----------------
                                                                                              POTENTIAL REALIZABLE
                                              % OF TOTAL                                      VALUE AT ASSUMED
                                 NUMBER OF      OPTIONS                                     ANNUAL RATES OF STOCK
                                 SECURITIES   GRANTED TO     EXERCISE                      PRICE APPRECIATION FOR
                                 UNDERLYING  EMPLOYEES IN      PRICE      EXPIRATION           OPTION TERM(4)
                                 OPTIONS(1) FISCAL YEAR(2) PER SHARE(3)     DATE            5%               10%
                                 ---------- -------------- ------------     ----            --               ---


<S>                              <C>              <C>        <C>             <C>  <C>      <C>             <C>
Mark C. Miller                   8,545            2.90%      $13.625         3/31/08       $   73,219      $    185,552
                                11,429            3.88%       14.00          3/31/08          100,627           255,008
                                31,455           10.69%       13.625         3/31/08          269,528           683,037

Anthony J. Tomasello            12,000            4.08%       13.625         3/31/08          102,824           260,577
                                10,000            3.40%       14.00          3/31/08           88,045           223,124

Frank J.M. ten Brink             7,725            2.62%       13.625         3/31/08           66,193           167,746
                                 1,429            0.49%       14.00          3/31/08           12,582            31,884
                                11,275            3.83%       13.625         3/31/08           96,612           244,834

Linda D. Lee                     7,000            2.38%       13.625         3/31/08           59,981           152,003
                                 4,286            1.46%       14.00          3/31/08           37,736            95,631

Michael J. Bernert              11,000            3.74%       13.625         3/31/08           94,256           238,862

(1)       All of the stock options granted to the named executive  officers were
          granted  under our 1997 Stock Option Plan.  Each option  granted vests
          over a four-year period: one-quarter of the option vests at the end of
          the first year,  and the balance of the option vests in equal  monthly
          increments  over the next 36 months.  The options for 11,429,  10,000,
          1,429 and 4,286 shares  granted to Messrs.  Miller,  Tomasello and ten
          Brink and Ms. Lee,  respectively,  were granted in lieu of portions of
          the cash  bonuses  otherwise  payable  to them  under  our cash  bonus
          program for executive officers.

(2)       The  percentages  shown in the table  reflect  options  for a total of
          294,368 shares granted to employees  during 1998. All of these options
          were granted under our 1997 Stock Option Plan.

(3)      The exercise price per share shown in the table is equal to the closing
          price of a share of common stock on the date of grant.

<PAGE>

(4)       The  potential  realizable  value was  calculated  on the basis of the
          10-year term of each option on its grant date,  assuming that the fair
          market value of the underlying  stock on the grant date appreciates at
          the indicated  annual rate compounded  annually for the entire term of
          the term of the option and that the  option is  exercised  and sold on
          the  last  day of its  term  for  the  appreciated  stock  price.  The
          potential  realizable  value of each option was  calculated  using the
          exercise  price  of  the  option  as  the  fair  market  value  of the
          underlying stock on the grant date.

</TABLE>

1998 OPTION EXERCISES AND YEAR END OPTION VALUES

         The following table provides certain information regarding stock option
exercises  in 1998 by the named  executive  officers  and the value of the stock
options  that  they  held at  December  31,  1998.  No named  executive  officer
exercised  any  stock  appreciation  rights  during  the  year or had any  stock
appreciation rights outstanding at the end of the year.

<TABLE>

                 AGGREGATED OPTION EXERCISES IN LAST FISCAL YEAR AND FISCAL YEAR END OPTION VALUES
<CAPTION>

                                                                      NUMBER OF
                                                                     SECURITIES
                                                                     UNDERLYING                 VALUE OF UNEXERCISED
                                                                     UNEXERCISED                    IN-THE-MONEY
                                     SHARES                       OPTIONS AT FISCAL                  OPTIONS AT
                                    ACQUIRED       VALUE              YEAR END                   FISCAL YEAR END(2)
                                   ON EXERCISE  REALIZED(1)    VESTED       UNVESTED         VESTED           UNVESTED
                                   -----------  -----------    ------       --------         ------           --------


<S>                                  <C>         <C>             <C>            <C>         <C>                <C>
Mark C. Miller                       26,400      $300,246        95,904         90,941      $1,163,146         $579,651
Anthony J. Tomasello                  6,000        81,750        20,925         28,121         133,756          173,814
Frank J.M. ten Brink                     --            --        17,925         57,504         147,067          360,345
Linda D. Lee                         11,354       159,532         5,658         19,292          21,770          123,791
Michael J. Bernert                    2,000        29,940        62,361         31,929         901,741          238,446

(1)       The value realized was determined by multiplying  the number of option
          shares acquired by the closing price of a share of our common stock on
          the date of exercise,  and then  subtracting  the  aggregate  exercise
          price.

(2)       The value of in-the-money  stock options was determined by multiplying
          the number of vested (exercisable) or unvested (unexercisable) options
          by $16.125 per share, which was the closing price of a share of common
          stock on  December  31,  1998,  and  then  subtracting  the  aggregate
          exercise price.

</TABLE>

STOCK OPTION PLANS

         We have  adopted two stock  option  plans in addition to the  Directors
Stock Option Plan:  (1) the 1997 Stock Option Plan (the "1997 Plan"),  which was
approved by our  stockholders at the 1997 Annual Meeting;  and (2) the Incentive
Compensation Plan (the "1995 Plan"), which was adopted in August 1995. Each plan
authorizes a total of 1,500,000  shares of common stock to be issued pursuant to
options  granted  under  the plan or, in the case of the 1995  Plan,  restricted
stock  awarded  under the plan.  If an option  granted under either plan expires
unexercised  or is  surrendered,  or,  in the  case  of  the  1995  Plan,  if we
repurchase shares of restricted stock awarded under the plan, the shares subject
to the option or repurchased by it once again become available for option grants
or, in the case of the 1995 Plan, restricted stock awards.

         As of December  31,  1998,  924,224  shares were  available  for future
option grants under the 1997 Plan,  and 377,942 shares were available for future
option grants or  restricted  stock awards under the 1995 Plan. No option grants
or restricted  stock awards were made under the 1995 Plan during 1998. Each plan
has a 10-year  term,  and no option may be granted under the 1997 Plan after its
expiration in January 2007, and no option may be granted or shares of restricted
stock awarded under the 1995 Plan after its expiration in July 2005.

         Both plans provide for the grant of incentive stock options intended to
satisfy the requirements of section 422 of the Internal Revenue Code of 1986, as
amended,  nonstatutory  stock  options  and,  in  the  case  of the  1995  Plan,

<PAGE>


restricted stock awards. Incentive stock options may be granted and, in the case
of the  1995  Plan,  shares  of  restricted  stock  may be  awarded  only to our
employees.  Nonstatutory  stock  options  may be granted  under the 1997 Plan to
employees,  directors and  consultants and may be granted under the 1995 Plan to
employees and consultants. Both plans are administered by our Board of Directors
in respect of all  eligible  persons  other than  executive  officers and by the
Compensation  Committee  of our  Board of  Directors  in  respect  of  executive
officers. Our Board of Directors or the Compensation  Committee, as the case may
be, selects the eligible  persons to whom options are granted or, in the case of
the 1995 Plan, restricted stock is awarded and, subject to the provisions of the
particular plan, determines the terms of each option or award, including, in the
case of an  option,  the number of shares,  type of option,  exercise  price and
vesting  schedule,  and, in the case of an award of  restricted  stock under the
1995 Plan, the purchase  price, if any, and the  restrictions  applicable to the
award.

         The exercise price per share of options  granted under either plan must
be at least equal to the closing price of a share of common stock on the date of
grant,  with the  exception  that the  exercise  price per share of an incentive
stock option  granted to an employee  holding  more than 10% of our  outstanding
common stock must be at least 110% of the closing price.  The maximum term of an
option  granted  under  either  plan may not  exceed 10 years.  An option may be
exercised  only when it is vested  and,  in the case of an option  granted to an
employee,  only while the holder of the option  remains an  employee  of ours or
during the 90-day period following the termination of his or her employment.  In
the discretion of our Board of Directors or the Compensation  Committee,  as the
case may be,  this 90-day  period may be  extended  in the case of  nonstatutory
stock options to any date ending on or before the expiration date of the option.
In addition, our Board of Directors or the Compensation  Committee,  as the case
may be, may accelerate the exercisability of an option at any time.

OTHER PLANS

         We maintain a 401(k) plan in which  employees  who have  completed  one
year's  employment  and attained age 21 are  eligible to  participate.  The plan
permits us to make  matching  contributions  of a  percentage  of  participants'
deferrals as determined  each year by the Board of Directors.  For 1998, we made
matching  contributions of 30% of the first $1,000  contributed by participants.
We also  maintain a  nonqualified  employee  stock  purchase  plan  under  which
employees  may  purchase  common  stock  on  the  open  market  through  payroll
deductions.

EMPLOYMENT AGREEMENTS

         We have not entered into written employment  agreements with any of our
executive  officers or employees.  All of our  executive  officers and employees
have signed confidentiality agreements with us.


<PAGE>


                             PRINCIPAL STOCKHOLDERS

         The following  table  provides  information  regarding  the  beneficial
ownership  of our common  stock as of November 30, 1999 by (i) each person known
by us to be the  beneficial  owner  of more  than 5% of our  outstanding  common
stock, (ii) each of our directors,  (iii) each of our executive  officers listed
in the Summary  Compensation  Table and (iv) all of our  directors and executive
officers as a group:

<TABLE>

                                                                                          OPTION AND
                                                                                        WARRANT SHARES
                                                                                          INCLUDED IN
                                                                           SHARES        BENEFICIALLY
                                                                           BENEFICIALLY      OWNED            COMBINED
                                                                           OWNED           SHARES(1)        PERCENTAGE(2)
                                                                           -----           ---------        -------------


<S>                                                                       <C>               <C>                 <C>
The TCW Group, Inc.(3)
       865 South Figueroa Street
     Los Angeles, CA 90017........................................        1,043,700             --               7.1%
Bain Capital Group(4)(6)
     c/o Bain Capital, Inc.
     Two Copley Place
     Boston, MA 02116.............................................        2,121,427             --              11.2
Madison Dearborn Partners, LLC (5)(6)
     70 W. Madison Street
     Chicago, IL 60602............................................        2,142,857             --              11.3
Mark C. Miller(7).................................................          682,415        138,483               4.6
Anthony J. Tomasello..............................................          168,625         39,612               1.1
Frank J.M. ten Brink..............................................           32,220         32,167               *
Michael J. Bernert(8).............................................           89,645         83,274               *
Jack W. Schuler(9)................................................          946,484         51,969               6.4
Rod F. Dammeyer(10)...............................................           27,583         16,583               *
Patrick F. Graham.................................................           29,350         19,567               *
John Patience.....................................................          263,653         52,596               1.8
Peter Vardy(11)...................................................          206,911         43,549               1.4
L. John Wilkerson, Ph.D.(12)......................................           46,611         17,385               *
Thomas R. Reusche(13).............................................               --             --               *
John P. Connaughton(14)...........................................               --             --               *
All directors and executive officers
     as a group (14 persons)(15)..................................        2,496,600        488,944              16.4

*        Less than 1%.

(1)       This column shows shares of common stock issuable upon the exercise of
          stock  options or warrants  exercisable  as of or within 60 days after
          June 30, 1999.

(2)       Shares of common stock  issuable upon the exercise of stock options or
          warrants  exercisable  as of or within 60 days after June 30, 1999 are
          considered outstanding for purposes of computing the percentage of the
          person   holding  the  option  or  warrant  but  are  not   considered
          outstanding  for purposes of  computing  the  percentage  of any other
          person.

(3)       The shares shown as  beneficially  owned by The TCW Group,  Inc.,  are
          derived from a Schedule 13F, filed by the TCW Group,  Inc. on June 30,
          1999.  Schedule 13G filings are more  comprehensive  than Schedule 13F
          filings but filed less  frequently.  A Schedule 13G,  jointly filed by
          The TCW Group,  Inc.,  a parent  holding  company,  and Robert Day, an
          individual who may be deemed to control The TCW Group, Inc.,  reported
          that, as of December 31, 1998,  for reporting  purposes,  each of them
          held sole  voting and  dispositive  power  over  785,300  shares.  The
          Schedule 13G  indicated  that:  (i) no shares are held directly by The
          TCW Group,  Inc.;  (ii) The TCW Group,  Inc.  indirectly  held  shares
          through  its  subsidiaries,  Trust  Company  of the  West,  TCW  Asset
          Management  Company and TCW Funds  Management,  Inc.;  and (iii) aside

<PAGE>

          from the indirect holdings of The TCW Group,  Inc., Robert Day did not
          directly or indirectly hold any of these shares.

(4)      The  shares  shown as  beneficially  owned by Bain  Capital  Group  are
         derived  from a joint  Schedule  13D  filed  on  November  22,  1999 by
         investment   funds  associated  with  Bain  Capital  and  with  Madison
         Dearborn.  The shares of common stock  reported as beneficial  owned by
         these  funds  are  derived  from  the   beneficial   ownership  of  our
         convertible   preferred  stock  on  an  as-if  converted   basis.   See
         "Description  of  Capital  Stock--Convertible   Preferred  Stock."  The
         Schedule  13D reports that the  following  funds  associated  with Bain
         Capital are the beneficial owners of the following shares, and each has
         sole voting and sole dispositive power with respect to these shares:

                                                        Shares of               Shares of
                                               Convertible Preferred Stock    Common Stock          Percentage of
         Fund                                      Beneficially Owned      Beneficially Owned    Outstanding Shares
         ----                                      ------------------      ------------------    ------------------

         <S>                                            <C>                   <C>                       <C>
         Bain Capital Fund VI, L.P.                     25,403.76             1,451,643                 7.64%
         BCIP Associates II                              4,491.38               256,650                 1.35
         BCIP Associates II-B                              615.62                35,178                 0.19
         BCIP Associates II-C                            1,319.76                75,415                 0.40
         BCIP Trust Associates II                        1,291.22                73,784                 0.39
         BCIP Trust Associates II-B                        206.08                11,776                 0.06
         Pep Investments Pty Limited                        84.68                 4,839                 0.03
         Brookside Capital Partners Fund L.P.            1,856.25               106,071                 0.56
         Sankaty High Yield Asset Partners, L.P.         1,856.25               106,071                 0.56

         The Schedule 13D further  reports that other  entities  related to Bain
         Capital, in their roles as general partners of the funds, may be deemed
         to control  some of these funds and thus share  voting and  dispositive
         power with respect to those common shares. In addition, W. Mitt Romney,
         an individual, may be deemed to share voting and dispositive power with
         respect to  2,116,588  shares of common  stock in his  capacity as sole
         shareholder of Bain Capital and of other entities that serve as general
         partners of the funds.

(5)      The Schedule 13D jointly filed by investment funds associated with Bain
         Capital  and  with  Madison  Dearborn  reports  that  Madison  Dearborn
         Partners,  LLC, as sole general  partner of Madison  Dearborn  Partners
         III,  L.P.,  shares  voting  and  dispositive  power  with  respect  to
         2,142,857 common share based on the beneficial ownership of convertible
         preferred  stock by the  following  investment  funds for which Madison
         Dearborn Partners III is the general partner:

                                                        Shares of               Shares of
                                               Convertible Preferred Stock    Common Stock          Percentage of
         Fund                                      Beneficially Owned      Beneficially Owned    Outstanding Shares
         ----                                      ------------------      ------------------    ------------------

         <S>                                            <C>                   <C>                       <C>
         Madison Dearborn Capital Partners III, L.P.    36,538.68             2,087,925                10.99%
         Madison Dearborn Special Equity III, L.P.         811.32                46,361                 0.24
         Special Advisors Fund I, LLC, L.P..               150                    8,571                 0.05

(6)       The funds  associated with Bain Capital and with Madison Dearborn have
          agreed  to  vote  their  shares  of  convertible  preferred  stock  in
          accordance with the terms of an inter-investor  agreement. As a result
          of the terms of the  inter-investor  agreement,  the Bain  Capital and
          Madison  Dearborn  funds  may be deemed to  constitute  a "group"  for
          purposes of the Exchange  Act.  Accordingly,  the Schedule 13D reports
          that by  virtue of their  beneficial  ownership  of  75,000  shares of
          convertible  preferred  stock,  the funds associated with Bain Capital
          and with Madison  Dearborn may be deemed to beneficially own 4,285,714
          shares of common stock, representing  approximately 22.6% of the total
          number  of  outstanding  shares  of  common  stock.  For  purposes  of
          computing  the  percentages  for  each of  Bain  Capital  and  Madison
          Dearborn,  all of our  convertible  preferred  stock is  assumed to be
          converted into common stock.

(7)       The shares shown as  beneficially  owned by Mr. Miller  include 76,346
          shares  owned by trusts for the  benefit of his sons,  as to which Mr.
          Miller disclaims beneficial ownership.

<PAGE>


(8)       The shares shown as beneficially  owned by  Mr. Bernert  include 1,000
          shares owned by his wife, as to which Mr. Bernert disclaims beneficial
          ownership.

(9)       The shares shown as  beneficially  owned by Mr. Schuler include 35,218
          shares  owned by his wife and trusts for the benefit of his  children,
          as to which Mr. Schuler disclaims any beneficial ownership, and 30,000
          shares owned by a family  foundation of which Mr.  Schuler is the sole
          trustee, as to which Mr. Schuler disclaims beneficial ownership.

(10)      The shares  shown as  beneficially owned by Mr. Dammeyer include 1,000
          shares  owned  by  his  wife,   as to  which  Mr.  Dammeyer  disclaims
          beneficial ownership.

(11)      The shares shown as  beneficially  owned by Mr. Vardy  include  67,614
          shares  owned by trusts for the benefit of his  children,  as to which
          Mr. Vardy disclaims beneficial ownership.

(12)      Dr. Wilkerson is an indirect  general partner of Galen Partners,  L.P.
          and Galen  Partners  International,  L.P.,  which together own 290,484
          shares  (including  16,279 shares  issuable upon the exercise of stock
          options and warrants exercisable as of or within 60 days after May 31,
          1999). Dr. Wilkerson  disclaims any beneficial  interest in the shares
          held by these two  limited  partnerships  except to the  extent of his
          individual   ownership  of  limited  partnership   interests  and  his
          pecuniary  interest  arising  from his  indirect  general  partnership
          interest.

(13)      Mr.  Reusche is a Managing  Director of Madison  Dearborn which may be
          deemed to beneficially own 2,142,857 shares. Mr. Reusche disclaims any
          beneficial  interest  in  the  shares  held  by the  investment  funds
          associated with Madison  Dearborn,  and theses shares are not included
          in the number of shares  beneficial owned by Mr. Reusche or the number
          of shares  beneficial  owned by all of our directors and officers as a
          group.

 (14)     Mr.  Connaughton  is a Managing  Director of Bain Capital which may be
          deemed to beneficially own 2,121,427 shares. Mr. Connaughton disclaims
          any  beneficial  interest in the shares held by the  investment  funds
          associated  with Bain  Capital,  and theses shares are not included in
          the number of shares  beneficial owned by Mr. Reusche or the number of
          shares  beneficial  owned by all of our  directors  and  officers as a
          group.

(15)     The group of directors and executive officers does not include Ms. Lee,
         who resigned as an employee in  March 1999.

</TABLE>

<PAGE>


                              CERTAIN TRANSACTIONS

         In December 1998, we entered into a subordinated  loan agreement with a
group of  lenders  consisting  of six of our seven  directors  at that time (Mr.
Graham being the only director not participating), pursuant to which the lenders
agreed to provide us with up to  $5,500,000  of  short-term  financing  upon our
request.  In December  1998,  we borrowed  $2,750,000,  and in January  1999, we
borrowed the remaining  balance  available under the loan  agreement.  Each loan
bore  interest  at 6.0% per annum and was  repaid in March  1999  following  the
completion  in February 1999 of our public  offering  which was pending when the
loans were made. Under the terms of the subordinated loan agreement, the lenders
were  granted  five-year  warrants  to  purchase  shares  of our  common  stock,
exercisable  at any time after the first  anniversary  of the grant  date.  Upon
entering into the loan agreement,  each lender was granted a warrant to purchase
a number of shares of common  stock  equal to the  amount of the  lender's  loan
commitment  multiplied  by 0.05 and then divided by the closing price of a share
of common stock on the trading day immediately prior to the date of the lender's
execution of the loan  agreement.  This closing price is also the exercise price
of the warrant. In addition, at the time of each loan, each lender was granted a
warrant to  purchase a number of shares of common  stock  equal to the amount of
the loan  multiplied by 0.30 and then divided by the closing price of a share of
common stock on the trading day immediately prior to date of disbursement of the
lender's loan. This closing price is also the exercise price of the warrant.  In
connection with their loans, the lenders were granted  warrants to purchase,  in
the aggregate,  18,970 shares of common stock at $14.50 per share, 43,551 shares
of common stock at $15.50 per share and 59,092  shares of common stock at $16.50
per share.

         In May 1996,  we borrowed  $1,000,000  under a  short-term  loan from a
group of nine lenders consisting of directors (Messrs. Schuler, Miller, Patience
and Vardy),  executive  officers  (Messrs.  Tomasello and Bernert and our former
Vice  President,  Finance)  and  stockholders  (Galen  Partners,  L.P. and Galen
Partners  International,  L.P.). Our loan was interest-free if paid when due and
was due within 30 days after  completion of an initial  public  offering or upon
the occurrence of other events.  We repaid the loan following the closing of our
initial public  offering in August 1996. In connection  with the loan, we issued
warrants to members of the lending group to purchase, in the aggregate,  226,036
shares  of our  common  stock at an  exercise  price of $7.96 per  share.  These
warrants  expire  in May 2001  and are  exercisable  at any time  prior to their
expiration.  During 1998, warrants to purchase 35,940 shares were exercised, and
at December 31, 1998, warrants to purchase 190,096 shares remained outstanding.

         In November  1999, in  connection  with the  preferred  stock  purchase
agreement,  we paid a  closing  fee to  investment  funds  associated  with Bain
Capital and with Madison Dearborn,  the purchasers of our convertible  preferred
stock,  of  $750,000  and  agreed  to  pay  $600,000  of  their  expenses.   See
"Description of Capital Stock--Convertible Preferred Stock."


<PAGE>


                        DESCRIPTION OF OTHER INDEBTEDNESS

CREDIT FACILITY

         We  have a  term  loan  and  revolving  credit  facility  with  various
financial  institutions from time to time parties thereto,  DLJ Capital Funding,
Inc., as  syndication  agent for the financial  institutions,  lead arranger and
sole book running manager,  Bank of America,  N.A., as administrative  agent for
the financial institutions and Bankers Trust Company, as documentation agent for
the  financial  institutions,  consisting  of (a) a  six-year  revolving  credit
facility of up to $50.0  million,  (b) a six-year  term loan A in the  principal
amount of $75.0 million and (c) a seven-year term loan B in the principal amount
of $150.0 million.

REPAYMENT

         The  term  loan A  matures  in  quarterly  installments,  resulting  in
aggregate annual amortization  payments as a percentage of the initial principal
amount as follows:

         YEAR AFTER CLOSING                             ANNUAL AMORTIZATION
         ------------------                             -------------------
                                                       (IN PERCENTAGE OF THE
                                                     INITIAL PRINCIPAL AMOUNT)


         1..................................................      2.5%
         2..................................................      7.5
         3..................................................     12.5
         4..................................................     22.5
         5..................................................     25.0
         6..................................................     30.0

         The  term  loan B  matures  in  quarterly  installments,  resulting  in
aggregate annual amortization  payments as a percentage of the initial principal
amount as follows:

         YEAR AFTER CLOSING                            ANNUAL AMORTIZATION
         ------------------                            -------------------
                                                      (IN PERCENTAGE OF THE
                                                    INITIAL PRINCIPAL AMOUNT)


         1-6...............................................      1%
         7.................................................     94

GUARANTEES; SECURITY

         The  credit  facility  is  secured  by  a  first-priority  (subject  to
customary exceptions), perfected lien on: (i) substantially all our property and
assets and substantially all the property and assets of our subsidiaries,  other
than unrestricted subsidiaries and foreign subsidiaries,  (ii) all capital stock
(or similar  equity  interests) of all of our direct and indirect  subsidiaries,
provided  that  no  more  than  65% of the  capital  stock  (or  similar  equity
interests)  of  our  foreign  subsidiaries  directly  held  by us or  one of our
non-foreign  subsidiaries  is required to be pledged and no capital stock of our
foreign subsidiaries held by our foreign subsidiaries is required to be pledged,
and (iii) all  intercompany  notes  other  than  intercompany  notes held by our
foreign subsidiaries.

         The credit facility is guaranteed on a senior secured basis by entities
customary  for  transactions  of this  nature,  including  all of our direct and
indirect non-foreign subsidiaries (other than any unrestricted subsidiaries).

INTEREST

         At our option, the interest rates per annum applicable to the revolving
credit  facility,  term  loan A and term  loan B will be a  fluctuating  rate of
interest  determined  by  reference  to (a) the London  Interbank  Offered  Rate
(LIBOR) plus the applicable  margin,  or (b) a base rate which is the greater of
the  prime  rate  and the  rate  which is 1/2 of 1% in  excess  of the  rates on
overnight Federal funds transactions as published by the Federal Reserve Bank of

<PAGE>


New York, plus the applicable  margin.  The applicable margin will be determined
based on our total leverage ratio.

USE OF PROCEEDS

         The term loans were used to  finance in part the BFI  acquisition,  the
refinancing  of  existing  debt and fees and  expenses  associated  with the BFI
acquisition and related financing transactions. The revolving credit facility is
available to be used for working capital and general corporate purposes.

PREPAYMENTS

         We are permitted to voluntarily  prepay the obligations  under the term
loans and to reduce the amount  committed  under the revolving  credit  facility
without any penalty or premium at any time.  We are  required to prepay the term
loans with:

          (i) 100%  net  proceeds  of  specified  asset  sales,   proceeds  from
              condemnation  and the like and  proceeds  from  loss or  casualty,
              subject to customary exceptions for repairs and replacements;

          (ii) 100%  of the net  proceeds  from  the  sale or  issuance  of debt
               securities;

          (iii)50%  of the net proceeds from the issuance of equity  securities,
               subject to customary adjustments to be mutually determined;

          (iv) 75% of excess cash flow,  subject to customary  adjustments to be
               mutually determined; and

          (v) 100% of  payments  by or on behalf of  Allied  in  respect  of any
              purchase price adjustment under the purchase agreements  regarding
              the BFI acquisition.

         Prepayments will be applied pro rata to term loan A and term loan B and
will be  applied to  scheduled  installments  on each loan on a pro rata  basis;
provided that the lenders with respect to term loan B can decline to be prepaid.

COVENANTS; EVENTS OF DEFAULT

         The credit facility contains covenants  restricting our ability and the
ability of any of our  subsidiaries  to (with limited  exceptions),  among other
things:

         o    incur debt;

         o    subject our assets to liens;

         o    make investments;

         o    incur contingent liabilities;

         o    pay dividends;

         o    merge or sell assets;

         o    make capital expenditures;

         o    enter into sale/lease-back transactions;

         o    enter into new businesses;

         o    discount receivables; and

         o    enter into affiliate transactions.

<PAGE>


         In  addition,  the  credit  facility  requires  us  to  meet  financial
performance  tests,  including  a maximum  leverage  ratio  and a  minimum  cash
interest coverage ratio and, as we elect, either a minimum fixed charge coverage
ratio or minimum EBITDA.

         The credit facility contains conditions under which an event of default
under the credit facility will exist, including:

         o    failure to make payments when due under the credit facility;

         o    defaults in other agreements;

         o    breach of covenants;

         o    material misrepresentations;

         o    involuntary or voluntary bankruptcy;

         o    judgments or attachments against us;

         o    dissolution; and

         o    changes in control.

OTHER INDEBTEDNESS

         Our other financial obligations include industrial  development revenue
bonds issued on behalf of and guaranteed by us to finance our Woonsocket,  Rhode
Island treatment  facility and equipment.  These bonds, which had an outstanding
aggregate balance of $1,071,000 as of September 30, 1999 at fixed interest rates
ranging from 6.300% to 7.375%,  are due in various amounts through June 2017. In
addition,   we  have  issued  various   promissory   notes  in  connection  with
acquisitions during 1997 and 1998, consisting primarily of a 10-year note issued
as part of the Environmental  Control Co. acquisition,  which had an outstanding
balance of $1,840,000 at September 30, 1999.




<PAGE>


                              DESCRIPTION OF NOTES

         You can find the definitions of various terms used in this  description
under the subheading "Certain Definitions." In this description, the words "we,"
"us," "our" and similar  terms refer to  Stericycle,  Inc. and not to any of our
subsidiaries.

         We  issued  the  series  A notes  under  an  indenture  among  us,  our
subsidiary  guarantors and State Street Bank and Trust Company, as trustee, in a
private transaction that was not subject to the registration requirements of the
Securities  Act. The terms of the  indenture  apply to the series A notes and to
the Series B notes to be issued in exchange  for the series A notes  pursuant to
the exchange offer.  The terms of the series B notes include those stated in the
indenture  and  those  made  part of the  indenture  by  reference  to the Trust
Indenture Act of 1939. The series B notes are subject to all of these terms.

         The following  description  is a summary of the material  provisions of
the indenture and the registration  rights agreement.  It does not restate those
agreements  in  their  entirety.  We urge  you to  read  the  indenture  and the
registration  rights agreement  because they, and not this  description,  define
your  rights  as  Holders  of  the  notes.  Copies  of  the  indenture  and  the
registration  rights  agreement  are  filed  as  exhibits  to  the  registration
statement of which this prospectus is a part and are also available as set forth
below under "--Additional Information."

         Generally  terms used in this  description  but not defined below under
the subheading  "Certain  Definitions" have the meanings assigned to them in the
indenture.  Unless the context  requires  otherwise,  "notes" refers to both the
series A and the series B notes. We us the term "Guarantors" in this description
since it is used in the indenture, but elsewhere in this prospectus we have used
the term "subsidiary guarantors" to have the same meaning.

BRIEF DESCRIPTION OF THE SERIES B NOTES AND THE GUARANTEES

THE SERIES B NOTES

         The series B notes:

         o    are general unsecured obligations of ours;

         o    are subordinated in right of payment  to all  of our  existing and
              future Senior Debt;

         o    are pari passu  in right  of payment with any of our future senior
              subordinated Indebtedness; and

         o    are unconditionally guaranteed by our Guarantors.

THE SUBSIDIARY GUARANTEES

         The series B notes will be  guaranteed by all of our current and future
Domestic  Subsidiaries  that are  Restricted  Subsidiaries,  except 3CI Complete
Compliance  Corporation,  a  publicly  traded  corporation  in  which  we hold a
controlling interest, and our foreign subsidiaries.

         The guarantees of the series B notes:

         o    are general unsecured obligations of each Guarantor;

         o    are subordinated  in right  of payment  to all existing and future
              Senior Debt of each Guarantor; and

         o    are  pari  passu  in  right of  payment  with  any  future  senior
              subordinated Indebtedness of each Guarantor.

         Not all of our subsidiaries will guarantee the series B notes. Med-Tech
Environmental  Limited,   Med-Tech  Environmental  (CDA),  Ltd.,  Bio-Med  Waste
Disposal Systems, Ltd., and 507375 N.B. Ltd., our existing foreign subsidiaries,
and 3CI Complete Compliance Corporation will not be guarantors.  In the event of

<PAGE>


a  bankruptcy,  liquidation  or  reorganization  of any of  these  non-guarantor
subsidiaries,  these  non-guarantor  subsidiaries  will pay the holders of their
debts and their trade  creditors  before they will be able to distribute  any of
their assets to us. The  non-guarantor  subsidiaries  generated  9.9% of our pro
forma revenues for the twelve-month  period ended June 30, 1999 and held 4.9% of
our pro forma combined assets as of September 30, 1999.

         As of  the  date  of  the  indenture,  all  of  our  subsidiaries  were
"Restricted  Subsidiaries."  However,  under the  circumstances  described below
under  the  subheading  "--Certain   Covenants--Designation  of  restricted  and
unrestricted  subsidiaries,"  we  will be  permitted  to  designate  some of our
subsidiaries  as  "Unrestricted  Subsidiaries."  The  effect  of  designating  a
Subsidiary as an "Unrestricted Subsidiary" will be

         o    an Unrestricted  Subsidiary  will not be subject  to  many  of the
              restrictive covenants in the indenture;

         o    a  Subsidiary  that has  previously  been a Guarantor  and that is
              designated  an  Unrestricted  Subsidiary  will be removed from its
              Subsidiary Guarantee; and

         o    the assets,  income,  cash flow and other financial  results of an
              Unrestricted  Subsidiary  will not be  consolidated  with ours for
              purposes of calculating  compliance with the restrictive covenants
              contained in the indenture.

PRINCIPAL, MATURITY AND INTEREST

         The  indenture  provides for the issuance by us of notes with a maximum
aggregate  principal amount of $200.0 million, of which $125.0 million of series
A notes were issued in the initial offering.  We may issue additional notes (the
"Additional  Notes")  from time to time.  Any  offering of  Additional  Notes is
subject  to  the  covenant   described   below  under  the  caption   "--Certain
Covenants--Incurrence  of  Indebtedness  and Issuance of  Preferred  Stock." The
series A and series B notes and any Additional Notes  subsequently  issued under
the  indenture  would be treated as a single  class for all  purposes  under the
indenture, including, without limitation,  waivers, amendments,  redemptions and
offers to  purchase.  We have  issued and will issue notes in  denominations  of
$1,000  and  integral  multiples  of $1,000.  The series B notes will  mature on
November 15, 2009.

         Interest  on the series B notes will  accrue at the rate of 12 3/8% per
annum and will be payable  semi-annually  in arrears on  November 15 and May 15,
commencing on May 15, 2000. We will make each interest payment to the Holders of
record on the immediately preceding November 1 and May 1.

         Interest  on the series B notes will  accrue  from the date of original
issuance  or, if  interest  has  already  been  paid,  from the date it was most
recently  paid.  Interest  will be  computed  on the  basis  of a  360-day  year
comprised of twelve 30-day months.

METHODS OF RECEIVING PAYMENTS ON THE SERIES B NOTES

         If you  have  given  wire  transfer  instructions  to us at  least  ten
business days prior to the  applicable  payment date, we will pay all principal,
interest and premium and Liquidated  Damages,  if any, on your series B notes in
accordance  with those  instructions.  All other  payments on the series B notes
will be made at the office or agency of the paying agent and  registrar  for the
notes  within  the City and State of New York  unless we elect to make  interest
payments  by check  mailed to the  Holders at their  addresses  set forth in the
register of Holders.

PAYING AGENT AND REGISTRAR FOR THE SERIES B NOTES

         The trustee will  initially act as paying agent and  registrar.  We may
change the paying  agent or  registrar  without  prior  notice to the Holders of
series B notes,  and we or any of our  Subsidiaries  may act as paying  agent or
registrar.


<PAGE>


TRANSFER AND EXCHANGE

         A Holder may transfer or exchange series B notes in accordance with the
indenture.  The  registrar  and the  trustee  may  require a Holder  to  furnish
appropriate endorsements and transfer documents in connection with a transfer of
series B notes.  Holders will be required to pay all taxes due on  transfer.  We
are not required to transfer or exchange any note selected for redemption. Also,
we are not  required to  transfer  or exchange  any note for a period of 15 days
before a selection of series B notes to be redeemed.

         The  registered  holder of a series B note will be treated as its owner
for all purposes.

SUBSIDIARY GUARANTEES

         The  Guarantors  will jointly and severally  guarantee our  obligations
under the series B notes. Each Subsidiary  Guarantee will be subordinated to the
prior payment in full in cash of all Senior Debt of that  Guarantor  (including,
without limitation, Senior Debt incurred after the date of the indenture) to the
extent the payment of  Subordinated  Note  Obligations  are  subordinated to our
Senior  Debt,  as  described  below  under  the  caption   "Subordination."  The
obligations of each Guarantor under its Subsidiary  Guarantee will be limited as
necessary to prevent that  Subsidiary  Guarantee from  constituting a fraudulent
conveyance  under  applicable  law.  See  "Risk  Factors--Fraudulent  Conveyance
Matters--Federal and state statutes allow courts, under specific  circumstances,
to void  guarantees  and require  noteholders to return  payments  received from
guarantors."

         A Guarantor may not sell or otherwise  dispose of all or  substantially
all of its assets to, or consolidate  with or merge with or into (whether or not
the Guarantor is the surviving Person), another Person, other than us or another
Guarantor, unless:

                   (1)     immediately after giving effect to that transaction,
                   no Default or Event of Default exists; and

                   (2)     either:

                            (a) the Person acquiring the property in any sale or
                           disposition  or the Person formed by or surviving any
                           consolidation  or merger assumes all the  obligations
                           of that Guarantor under the indenture, its Subsidiary
                           Guarantee  and  the  registration   rights  agreement
                           pursuant to a supplemental  indenture satisfactory to
                           the trustee; or

                            (b) any sale or other disposition  complied with the
                           "Asset Sale" provisions of the indenture.

         The Subsidiary Guarantee of a Guarantor will be released:

                  (1) in connection with any sale or other disposition of all or
                  substantially  all of the assets of that Guarantor  (including
                  by way of merger  or  consolidation)  to a Person  that is not
                  (either  before or after giving effect to the  transaction)  a
                  Restricted  Subsidiary of ours,  if the Guarantor  applies the
                  Net Proceeds of that sale or other  disposition  in accordance
                  with the "Asset Sale" provisions of the indenture;

                  (2) in connection with any sale of all of the Capital Stock of
                  a Guarantor  to a Person  that is not (either  before or after
                  giving effect to the  transaction) a Restricted  Subsidiary of
                  ours,  if we apply the Net Proceeds of that sale in accordance
                  with the "Asset Sale" provisions of the indenture; or

                  (3) if we properly designate any Restricted Subsidiary of ours
                  that  is  a  Guarantor  as  an   Unrestricted   Subsidiary  in
                  accordance with the applicable provisions of the indenture.

See "--Repurchase at the Option of Holders--Asset Sales."


<PAGE>


SUBORDINATION

         The payment of Subordinated  Note  Obligations  will be subordinated to
the prior  payment in full in cash of all of our Senior Debt,  including  Senior
Debt incurred after the date of the indenture.

         The holders of Senior Debt will be entitled to receive  payment in full
in cash of all  Obligations  due in respect of Senior Debt  (including  interest
after the commencement of any bankruptcy proceeding at the rate specified in the
applicable Senior Debt) before the Holders of series B notes will be entitled to
receive any payment with respect to Subordinated  Note Obligations  (except that
Holders of series B notes may receive and retain Permitted Junior Securities and
payments made from the trust  described  under "--Legal  Defeasance and Covenant
Defeasance"), in the event of any distribution to our creditors:

                  (1)  in our liquidation or dissolution;

                  (2)  in a bankruptcy, reorganization, insolvency, receivership
                  or similar proceeding relating to us or our property;

                  (3)  in an assignment for the benefit of creditors; or

                  (4)  in any marshaling of our assets and liabilities.

         We also may not make  any  payment  in  respect  of the  series B notes
(except  in  Permitted  Junior  Securities  or from the  trust  described  under
"--Legal Defeasance and Covenant Defeasance") if:

                  (1)  a payment default on Designated Senior Debt occurs and is
                  continuing; or

                  (2) any other  default  occurs and is continuing on Designated
                  Senior Debt that permits holders of the Designated Senior Debt
                  as to which that default  relates to  accelerate  its maturity
                  and the  trustee  receives a notice of the default (a "Payment
                  Blockage  Notice")  from us or the  holders of any  Designated
                  Senior Debt.

         Payments on the series B notes may and shall be resumed:

                  (1) in the case of a payment  default,  upon the date on which
                  the default is cured or waived; and

                  (2) in case of a nonpayment  default,  the earlier of the date
                  on which the nonpayment default is cured or waived or 179 days
                  after the date on which the applicable Payment Blockage Notice
                  is received, unless the maturity of any Designated Senior Debt
                  has been accelerated.

         No new Payment  Blockage  Notice may be delivered  unless and until 360
days have elapsed since the delivery of the immediately  prior Payment  Blockage
Notice.

         No  nonpayment  default that existed or was  continuing  on the date of
delivery of any Payment Blockage Notice to the trustee shall be, or be made, the
basis for a subsequent  Payment  Blockage  Notice  unless the default shall have
been cured or waived for a period of not less than 90 days.

         If the trustee or any Holder of the notes receives a payment in respect
of the notes (except in Permitted Junior  Securities or from the trust described
under  "--Legal  Defeasance  and  Covenant  Defeasance")  when  the  payment  is
prohibited by these subordination provisions,  the trustee or the Holder, as the
case may be, shall  promptly turn over the payment to the holders of Senior Debt
or their proper representative. Until the trustee or the Holder, as the case may
be,  shall have so turned over the  payment,  the trustee or the Holder,  as the
case may be,  shall hold the  payment in trust for the benefit of the holders of
Senior Debt.

         We must promptly notify Holders of Senior Debt if payment of the series
B notes is accelerated because of an Event of Default.


<PAGE>


         As a result of the  subordination  provisions  described  above, in the
event of our  bankruptcy,  liquidation  or  reorganization,  Holders of series B
notes may recover less ratably than trade  creditors and our other creditors who
are holders of Senior Debt. See "Risk Factors--Subordination."

OPTIONAL REDEMPTION

         At any  time  prior to  November  15,  2002,  we may on any one or more
occasions  redeem up to 35% of the aggregate  principal amount of series B notes
issued under the  indenture at a redemption  price of 112.375% of the  principal
amount of the series B notes  redeemed,  plus  accrued and unpaid  interest  and
Liquidated  Damages,  if any, to the redemption date, with the net cash proceeds
of one or more Equity Offerings; provided that:

                  (1) at  least  65% of the  series  B notes  issued  under  the
                  indenture remain outstanding  immediately after the occurrence
                  of the redemption (excluding series B notes held by any of our
                  Subsidiaries or us); and

                  (2)  the redemption  occurs within  60 days of the date of the
                  closing of the Equity Offering.

         Except pursuant to the preceding paragraph, the series B notes will not
be redeemable  at our option prior to November 15, 2004. We are not  prohibited,
however, from acquiring series B notes by means other than a redemption, whether
pursuant to an issuer tender offer or otherwise,  assuming the acquisition  does
not otherwise violate the terms of the indenture.

         After  November 15,  2004,  we may redeem all or a part of the series B
notes  upon not less than 30 nor more than 60 days'  notice,  at the  redemption
prices  (expressed  as  percentages  of  principal  amount) set forth below plus
accrued and unpaid  interest  and  Liquidated  Damages,  if any, on the series B
notes  redeemed  to the  applicable  redemption  date,  if  redeemed  during the
twelve-month period beginning on November 15 of the years indicated below:

         YEAR                                                       PERCENTAGE
         ----                                                       ----------

         2004................................................      106.1875%
         2005................................................      104.1250%
         2006................................................      102.0625%
         2007 and thereafter.................................      100.0000%

MANDATORY REDEMPTION

         Except as described in "Repurchase at the Option of  Holders--Change of
Control"  and  "Repurchase  at the Option of  Holders--Asset  Sales," We are not
required to make  mandatory  redemption or sinking fund payments with respect to
the series B notes.

REPURCHASE AT THE OPTION OF HOLDERS

CHANGE OF CONTROL

         If a Change of Control occurs,  each Holder of series B notes will have
the right to require  us to  repurchase  all or any part  (equal to $1,000 or an
integral  multiple of $1,000) of that  Holder's  series B notes  pursuant to the
Change of Control Offer on the terms set forth in the  indenture.  In the Change
of Control  Offer,  we will  offer a Change of Control  Payment in cash equal to
101% of the  aggregate  principal  amount  of  series B notes  repurchased  plus
accrued and unpaid  interest  and  Liquidated  Damages,  if any, on the series B
notes  repurchased to the date of purchase.  Within 30 days following any Change
of Control,  we will mail a notice to each Holder  describing the transaction or
transactions  that  constitute  the Change of Control and offering to repurchase
series B notes on the Change of Control  Payment  Date  specified in the notice,
which date  shall be no earlier  than 30 days and no later than 60 days from the
date the notice is mailed,  pursuant to the procedures required by the indenture
and described in the notice.  We will comply with the requirements of Rule 14e-1

<PAGE>


under the Exchange Act and any other securities laws and regulations  thereunder
to the extent those laws and  regulations  are applicable in connection with the
repurchase  of the notes as a result of a Change of Control.  To the extent that
the provisions of any securities laws or regulations conflict with the Change of
Control  provisions  of the  indenture,  we  will  comply  with  the  applicable
securities  laws and  regulations  and will not be deemed to have  breached  our
obligations under the Change of Control provisions of the indenture by virtue of
this conflict.

         On the Change of Control Payment Date, we will, to the extent lawful:

                  (1) accept for payment all series B notes or portions of notes
                  properly tendered pursuant to the Change of Control Offer;

                  (2)  deposit  with the  paying  agent an  amount  equal to the
                  Change of Control  Payment in respect of all series B notes or
                  portions of notes properly tendered; and

                  (3) deliver or cause to be delivered to the trustee the series
                  B notes so accepted  together  with an  officers'  certificate
                  stating the  aggregate  principal  amount of series B notes or
                  portions of series B notes being purchased by us.

         The paying  agent will  promptly  mail to each Holder of series B notes
properly  tendered the Change of Control Payment for the series B notes, and the
trustee will promptly  authenticate and mail (or cause to be transferred by book
entry) to each Holder a new note equal in  principal  amount to any  unpurchased
portion of the notes  surrendered,  if any; provided that each new series B note
will be in a principal amount of $1,000 or an integral multiple of $1,000.

         Prior  to  complying  with any of the  provisions  of this  "Change  of
Control"  covenant,  but in any  event  within  90 days  following  a Change  of
Control,  we will  either  repay  all  outstanding  Senior  Debt or  obtain  the
requisite consents,  if any, under all agreements  governing  outstanding Senior
Debt to permit the repurchase of series B notes  required by this  covenant.  We
will publicly  announce the results of the Change of Control Offer on or as soon
as practicable after the Change of Control Payment Date.

         The  provisions  described  above  that  require us to make a Change of
Control  Offer  following a Change of Control will be  applicable  regardless of
whether  any  other  provisions  of the  indenture  are  applicable.  Except  as
described  above with  respect to a Change of Control,  the  indenture  does not
contain provisions that permit the Holders of the series B notes to require that
we  repurchase  or  redeem  the  series  B notes  in the  event  of a  takeover,
recapitalization or similar transaction.

         We will not be required to make a Change of Control Offer upon a Change
of Control if a third party makes the Change of Control Offer in the manner,  at
the times and otherwise in  compliance  with the  requirements  set forth in the
indenture  applicable  to a Change of Control Offer made by us and purchases all
series B notes properly  tendered and not withdrawn  under the Change of Control
Offer.

         "Change of Control" means the occurrence of any of the following:

                   (1) the direct or  indirect  sale,  transfer,  conveyance  or
                  other   disposition   (other   than  by  way  of   merger   or
                  consolidation), in one or a series of related transactions, of
                  all or  substantially  all of the  properties or assets of our
                  Subsidiaries  and us taken as a whole to any "person" (as that
                  term is used in Section  13(d)(3) of the  Exchange  Act) other
                  than a Principal or a Related Party of a Principal;

                  (2)  the adoption  of a plan  relating to  our liquidation  or
                  dissolution;

                  (3) the  consummation of any transaction  (including,  without
                  limitation,  any merger or consolidation)  the result of which
                  is that  any  "person"  (as  defined  above),  other  than the
                  Principals and their Related  Parties,  becomes the Beneficial
                  Owner, directly or indirectly,  of more than 50% of our Voting
                  Stock,  measured by voting power rather than number of shares;
                  or


<PAGE>


                  (4) the first day on which a  majority  of the  members of our
                  Board of Directors are not Continuing Directors.

         The definition of Change of Control in the indenture  includes a phrase
relating to the direct or indirect sale,  lease,  transfer,  conveyance or other
disposition  of "all or  substantially  all" of the  properties or assets of our
Subsidiaries  and us taken as a whole.  Although there is a limited body of case
law interpreting the phrase "substantially all," there is no precise established
definition of the phrase under  applicable  law.  Accordingly,  the ability of a
Holder of series B notes to  require  us to  repurchase  the series B notes as a
result of a sale, lease, transfer,  conveyance or other disposition of less than
all of our assets  and our  Subsidiaries  taken as a whole to another  Person or
group may be uncertain.

ASSET SALES

         We will not, and will not permit any of our Restricted Subsidiaries to,
consummate an Asset Sale unless:

                  (1) We (or the  Restricted  Subsidiary,  as the  case  may be)
                  receive  consideration  at the time of the Asset Sale at least
                  equal  to the  fair  market  value  of the  assets  or  Equity
                  Interests issued or sold or otherwise disposed of;

                  (2) in the  case of Asset  Sales  involving  consideration  in
                  excess of $5.0 million, the fair market value is determined by
                  our Board of Directors  and  evidenced by a resolution  of the
                  Board  of  Directors  set  forth in an  officers'  certificate
                  delivered to the trustee; and

                  (3) at least 75% of the  consideration  received  in the Asset
                  Sale by the  Restricted  Subsidiary or us from or on behalf of
                  the transferee consists of:

                           (a)  cash or readily marketable Cash Equivalents;

                           (b)  the   assumption   of   Indebtedness   or  other
                           liabilities  reflected  on the  consolidated  balance
                           sheet of us and and our  Restricted  Subsidiaries  in
                           accordance with GAAP  (excluding  Indebtedness or any
                           other  liabilities  that are  subordinate in right of
                           payment to the series B notes) and the  release  from
                           all   liability   on  the   Indebtedness   or   other
                           liabilities assumed;

                           (c)  all or substantially all  of the assets of, or a
                           majority  of the Voting Stock  of,  another Permitted
                           Business;

                           (d)  other long-term  assets that are used  or useful
                           in a Permitted Business;

                           (e)  any  securities,   notes  or  other  obligations
                           received by us or any  Restricted  Subsidiary of ours
                           from a  transferee  that are  converted  by us or the
                           Restricted Subsidiary into cash within 90 days of the
                           receipt  thereof,  to the extent of the cash received
                           in that conversion or Cash Equivalents, to the extent
                           of the Cash Equivalents received in that conversion;

                           (f)  any Permitted Investment; or

                           (g)  any combination thereof.

         Within 365 days after the  receipt  of any Net  Proceeds  from an Asset
Sale, we may apply those Net Proceeds at our option:

                  (1) to repay  Senior  Debt and,  if the Senior  Debt repaid is
                  revolving  credit  Indebtedness,   to  correspondingly  reduce
                  commitments with respect thereto;

<PAGE>


                  (2) to acquire all or substantially all of the assets of, or a
                  majority of the Voting Stock of, another Permitted Business;

                  (3)  to make a capital expenditure;

                  (4) to acquire other long-term  assets that are used or useful
                  in a Permitted Business;

                  (5) to redeem the notes with the Net Proceeds of an Asset Sale
                  pursuant to any of the  provisions  described  above under the
                  caption "Optional Redemption;" or

                  (6)  any combination of the foregoing.

         Pending the final  application of any Net Proceeds,  we may temporarily
reduce revolving credit borrowings  (without reducing  commitments) or otherwise
invest the Net Proceeds in any manner that is not prohibited by the indenture.

         Any Net  Proceeds  from Asset Sales that are not applied or invested as
provided in the preceding  paragraph will constitute "Excess Proceeds." When the
aggregate amount of Excess Proceeds exceeds $10.0 million, we will make an Asset
Sale  Offer  to all  Holders  of  series  B  notes  and  all  holders  of  other
Indebtedness  that is pari passu with the series B notes  containing  provisions
similar to those set forth in the indenture  relating to the series B notes with
respect to offers to purchase or redeem with the  proceeds of sales of assets to
purchase  the  maximum  principal  amount of series B notes and such  other pari
passu  Indebtedness that may be purchased out of the Excess Proceeds.  The offer
price in any Asset Sale Offer will be equal to 100% of the principal amount plus
accrued  and unpaid  interest  and  Liquidated  Damages,  if any, to the date of
purchase,  and will be payable  in cash.  If any Excess  Proceeds  remain  after
consummation  of an Asset Sale Offer,  we may use those Excess  Proceeds for any
purpose not otherwise  prohibited by the indenture.  If the aggregate  principal
amount of series B notes and other  Indebtedness  tendered  into the Asset  Sale
Offer exceeds the amount of Excess Proceeds,  the trustee will select the series
B notes and the other  Indebtedness to be purchased on a pro rata basis based on
the  principal  amount of series B notes and the other pari  passu  Indebtedness
tendered.  Upon  completion  of each  Asset  Sale  Offer,  the  amount of Excess
Proceeds will be reset at zero.

         We will comply with the  requirements  of Rule 14e-1 under the Exchange
Act and any other securities laws and regulations thereunder to the extent these
laws and regulations are applicable in connection with each repurchase of series
B notes  pursuant to an Asset Sale Offer.  To the extent that the  provisions of
any securities laws or regulations  conflict with the Asset Sales  provisions of
the  indenture,   we  will  comply  with  the  applicable  securities  laws  and
regulations  and will not be deemed to have breached our  obligations  under the
Asset Sale provisions of the indenture by virtue of the conflict.

         The agreements governing our outstanding Senior Debt currently prohibit
us from  purchasing  any series B notes,  and also  provide  that some change of
control or asset sale events with respect to us would constitute a default under
these agreements.  Any future credit agreements or other agreements  relating to
Senior  Debt to which we become a party may  contain  similar  restrictions  and
provisions. In the event a Change of Control or Asset Sale occurs at a time when
we are prohibited from  purchasing  series B notes, we could seek the consent of
our  senior  lenders  to the  purchase  of  series B notes or could  attempt  to
refinance the  borrowings  that contain the  prohibition.  If we do not obtain a
consent or repay the  borrowings,  we will  remain  prohibited  from  purchasing
series B notes.  In that case, our failure to purchase  tendered  series B notes
would  constitute an Event of Default under the indenture  which would, in turn,
constitute  a  default  under  the  Senior  Debt.  In these  circumstances,  the
subordination  provisions in the indenture would likely restrict payments to the
Holders of series B notes.

SELECTION AND NOTICE

         If less than all of the series B notes are to be  redeemed at any time,
the trustee will select series B notes for redemption as follows:


<PAGE>


                   (1) if  the  series  B  notes  are  listed  on  any  national
                  securities  exchange,  in compliance with the  requirements of
                  the principal national securities exchange on which the series
                  B notes are listed; or

                   (2) if the  series B notes  are not  listed  on any  national
                  securities  exchange,  on a pro rata  basis,  by lot or by any
                  method as the trustee shall deem fair and appropriate.

         No series B notes of $1,000 or less will be redeemed  in part.  Notices
of  redemption  will be mailed by first class mail at least 30 but not more than
60 days  before  the  redemption  date to each  Holder  of  series B notes to be
redeemed  at  its  registered   address.   Notices  of  redemption  may  not  be
conditional.

         If any  series B note is to be  redeemed  in part  only,  the notice of
redemption  that  relates to that  series B note will  state the  portion of the
principal  amount of that series B note that is to be  redeemed.  A new series B
note in principal amount equal to the unredeemed  portion of the original series
B note will be issued in the name of the Holder thereof upon cancellation of the
original series B note.  Series B notes called for redemption  become due on the
date fixed for redemption.  On and after the redemption date, interest ceases to
accrue on series B notes or portions of them called for redemption.

CERTAIN COVENANTS

RESTRICTED PAYMENTS

         We will not, and will not permit any of our Restricted Subsidiaries to,
directly or indirectly:

                  (1) declare or pay any  dividend or make any other  payment or
                  distribution  on account of our Equity  Interests  (including,
                  without limitation,  any payment in connection with any merger
                  or  consolidation  involving  us) or to the direct or indirect
                  holders of our Equity  Interests in that capacity  (other than
                  dividends or distributions  payable in Equity Interests (other
                  than Disqualified Stock) of ours);

                  (2) purchase,  redeem or otherwise acquire or retire for value
                  (including,  without limitation, in connection with any merger
                  or  consolidation  involving us) any Equity Interests of us or
                  any direct or indirect parent of ours;

                  (3) make any  payment  on or with  respect  to,  or  purchase,
                  redeem,  defease or otherwise  acquire or retire for value any
                  Indebtedness that is subordinated to the series B notes or the
                  Subsidiary  Guarantees,   except  a  payment  of  interest  or
                  principal at the Stated Maturity thereof; or

                  (4) make any  Restricted  Investment  (all of the payments and
                  other actions set forth in these clauses (1) through (4) above
                  being collectively referred to as "Restricted Payments"),

unless, at the time of and after giving effect to the Restricted Payment:

                  (1) no  Default  or  Event  of  Default  has  occurred  and is
                  continuing or would occur as a consequence thereof; and

                  (2) we would, at the time of the Restricted  Payment and after
                  giving pro forma effect thereto as if the  Restricted  Payment
                  had been made at the beginning of the applicable  four-quarter
                  period,  have  been  permitted  to  incur  at  least  $1.00 of
                  additional  Indebtedness pursuant to the Fixed Charge Coverage
                  Ratio test set forth in the first  paragraph  of the  covenant
                  described   below   under   the   caption   "--Incurrence   of
                  Indebtedness and Issuance of Preferred Stock;" and

                  (3) the Restricted Payment, together with the aggregate amount
                  of all  other  Restricted  Payments  made  by  our  Restricted
                  Subsidiaries and us after the date of the indenture (excluding
                  Restricted  Payments  permitted by clauses (2), (3), (4), (6),
                  (7),  (8), (9) and (10) of the next  succeeding  paragraph) is
                  less than the sum, without duplication, of:


<PAGE>


                           (a) 50% of our Consolidated Net Income for the period
                           (taken as one  accounting  period) from the beginning
                           of the first fiscal quarter commencing after the date
                           of the  indenture  to the  end of our  most  recently
                           ended  fiscal  quarter for which  internal  financial
                           statements   are   available   at  the  time  of  the
                           Restricted  Payment  (or,  if  the  Consolidated  Net
                           Income for the period is a deficit,  less 100% of the
                           deficit), plus

                           (b) 100% of the aggregate net cash proceeds  received
                           by  us  since  the  date  of  the   indenture   as  a
                           contribution to our common equity capital or from the
                           issue or sale of our  Equity  Interests  (other  than
                           Disqualified  Stock) or from the issue or sale of our
                           convertible  or  exchangeable  Disqualified  Stock or
                           convertible or exchangeable debt securities that have
                           been  converted  into or  exchanged  (pursuant to the
                           terms thereof) for the Equity  Interests  (other than
                           Equity  Interests  (or  Disqualified  Stock  or  debt
                           securities) sold to a Subsidiary of ours), plus

                           (c) to the extent that any Restricted Investment that
                           was made after the date of the  indenture is sold for
                           cash or otherwise  liquidated or repaid for cash, the
                           lesser of (i) the cash return of capital with respect
                           to  the  Restricted  Investment  (less  the  cost  of
                           disposition,  if any) and (ii) the initial  amount of
                           the Restricted Investment.

         So long as no Default has occurred and is continuing or would be caused
thereby, the preceding provisions will not prohibit:

                  (1)  the   payment   of  any   dividend,   other   payment  or
                  distribution,  within 60 days  after  the date of  declaration
                  notice thereof,  if at said date of declaration the payment or
                  distribution  would have complied  with the  provisions of the
                  indenture;

                  (2) the  redemption,  repurchase,  retirement,  defeasance  or
                  other  acquisition  of any  subordinated  Indebtedness  of any
                  Guarantor or us or of any of our Equity  Interests in exchange
                  for,  or out of the net  cash  proceeds  of the  substantially
                  concurrent  sale (other  than to a  Restricted  Subsidiary  of
                  ours) of our Equity Interests (other than Disqualified Stock);
                  provided  that the  amount of any net cash  proceeds  that are
                  utilized   for   any   redemption,   repurchase,   retirement,
                  defeasance or other  acquisition  will be excluded from clause
                  (3)(b) of the preceding paragraph;

                  (3) any purchase,  repurchase,  redemption defeasance or other
                  acquisition   or   retirement   for   value  of   subordinated
                  Indebtedness, either

                           (i)  solely in  exchange  for  Permitted  Refinancing
                           Indebtedness   that  is   permitted  to  be  incurred
                           pursuant to the covenant  described under the caption
                           "Incurrence of Indebtedness and Issuance of Preferred
                           Stock," or

                           (ii) through the application of the net proceeds of a
                           substantially  current sale for cash (other than to a
                           Subsidiary  of  ours)  of our  Permitted  Refinancing
                           Indebtedness   that  is   permitted  to  be  incurred
                           pursuant to the covenant  described under the caption
                           "Incurrence of Indebtedness and Issuance of Preferred
                           Stock;"

                  (4)  repurchases of Equity  Interests from Persons who are not
                  our  Affiliates  who have sold  assets or stock of a Permitted
                  Business to us within the prior 18 months in exchange  for the
                  Equity Interests repurchased;

                  (5) the declaration and payment of dividends to holders of any
                  class or series of  Designated  Preferred  Stock  (other  than
                  Disqualified  Stock)  issued after the date of the  indenture;
                  provided,  that at the  time  of the  issuance,  after  giving
                  effect  to the  issuance  as if the same had  occurred  at the
                  beginning of the applicable four-quarter period on a pro forma
                  basis, we would have been permitted to incur at least $1.00 of
                  additional  Indebtedness pursuant to the Fixed Charge Coverage

<PAGE>


                  Ratio test set forth in the first  paragraph  of the  covenant
                  described   below   under   the   caption   "--Incurrence   of
                  Indebtedness and Issuance of Preferred Stock;"

                  (6)  repurchases  of  Capital  Stock  deemed to occur upon the
                  exercise of stock  options if the Capital  Stock  represents a
                  portion of the exercise price thereof;

                  (7)  payments  in  connection  with  the BFI  acquisition  and
                  related transactions made on the date of the indenture;

                  (8)  payment  to  holders  of our  Capital  Stock  in  lieu of
                  issuance  of  fractional  shares  of our  Capital  Stock in an
                  amount not to exceed $100,000 per annum;

                  (9)  the  repurchase,   redemption  or  other  acquisition  or
                  retirement  for value of any  Equity  Interests  of our or any
                  Subsidiary  of us held by any former  member of our (or any of
                  our Subsidiaries') management committee or any former officer,
                  employee  or  director  of  ours  or any  of our  Subsidiaries
                  pursuant to any equity  subscription  agreement,  stock option
                  agreement,  employment  agreement or other similar  agreements
                  provided  that the aggregate  price paid for all  repurchased,
                  redeemed,  acquired  or  retired  Equity  Interests  shall not
                  exceed $2.0 million in any calendar year (with unused  amounts
                  in any calendar year being carried over to succeeding calendar
                  years);

                  (10) the  payment of  dividends  on the  series A  convertible
                  preferred  stock  pursuant to the  provisions of the Preferred
                  Stock Agreement as in effect on the date of the indenture; and

                  (11) other  Restricted  Payments in an aggregate amount not to
                  exceed $5.0 million since the date of the indenture.

         The amount of all  Restricted  Payments  (other  than cash) will be the
fair  market  value on the date of the  Restricted  Payment of the  asset(s)  or
securities  proposed to be  transferred  or issued to or by us or any Restricted
Subsidiary,  as the case may be,  pursuant to the Restricted  Payment.  The fair
market value of any assets or securities  that are required to be valued by this
covenant  will be  determined by the Board of Directors  whose  resolution  with
respect  thereto  shall be  delivered to the  trustee.  The Board of  Directors'
determination  must  be  based  upon  an  opinion  or  appraisal  issued  by  an
accounting,  appraisal or  investment  banking firm of national  standing if the
fair market value exceeds $10.0  million.  Not later than the date of making any
Restricted  Payment,  we will  deliver to the trustee an  officers'  certificate
stating that the  Restricted  Payment is permitted  and setting  forth the basis
upon which the calculations required by this "Restricted Payments" covenant were
computed,  together with a copy of any fairness opinion or appraisal required by
the indenture.

INCURRENCE OF INDEBTEDNESS AND ISSUANCE OF PREFERRED STOCK

         We will not, and will not permit any of our  Subsidiaries  to, directly
or indirectly,  create,  incur,  issue,  assume,  guarantee or otherwise  become
directly or  indirectly  liable,  contingently  or  otherwise,  with  respect to
(collectively,  "incur") any Indebtedness (including Acquired Debt), and we will
not issue any Disqualified  Stock and will not permit any of our Subsidiaries to
issue any  shares  of  preferred  stock;  provided,  however,  that we may incur
Indebtedness  (including  Acquired Debt) or issue  Disqualified  Stock,  and our
Restricted  Subsidiaries may incur Indebtedness or issue preferred stock, if the
Fixed  Charge  Coverage  Ratio for our most  recently  ended  four  full  fiscal
quarters for which  internal  financial  statements  are  available  immediately
preceding  the date on which the  additional  Indebtedness  is  incurred  or the
Disqualified  Stock or preferred stock is issued would have been at least 2.0 to
1.0 in the case of any incurrence or issuance occurring on or prior to the third
anniversary  of the  date of the  indenture  and  2.25 to 1.0 in the case of any
incurrence or issuance that occurs thereafter,  in each case determined on a pro
forma basis (including a pro forma  application of the net proceeds  therefrom),
as if the additional  Indebtedness  had been incurred or the preferred  stock or
Disqualified  Stock had been issued, as the case may be, at the beginning of the
four-quarter period.

         The first  paragraph of this covenant will not prohibit the  incurrence
of any of the following items of Indebtedness (collectively, "Permitted Debt"):

<PAGE>


                  (1) the  incurrence  by us and  any  Guarantor  of  additional
                  Indebtedness and letters of credit under Credit  Facilities in
                  an  aggregate  principal  amount  at any one time  outstanding
                  under this clause (1) (with  letters of credit being deemed to
                  have  a  principal  amount  equal  to  the  maximum  potential
                  liability of any Guarantors  and us thereunder)  not to exceed
                  $275.0  million less the aggregate  amount of all Net Proceeds
                  of Asset  Sales  that  have been  applied  by us or any of our
                  Restricted  Subsidiaries  since the date of the  indenture  to
                  repay any term  Indebtedness  under a Credit Facility pursuant
                  to the covenant  described under the caption  "--Repurchase at
                  the Option of  Holders--Asset  Sales"  and less the  aggregate
                  amount of all Net Proceeds of Asset Sales applied by us or any
                  of our Restricted  Subsidiaries to repay any revolving  credit
                  Indebtedness   under  a   Credit   Facility   and   effect   a
                  corresponding  commitment reduction thereunder pursuant to the
                  covenant  described  under the  caption  "--Repurchase  at the
                  Option of Holders--Asset  Sales" and less the aggregate amount
                  of  Indebtedness  of  Receivables   Subsidiaries   outstanding
                  pursuant to clause (13) below;

                  (2)  the incurrence by us and our Subsidiaries of the Existing
                  Indebtedness;

                  (3) the incurrence by the  Guarantors  and us of  Indebtedness
                  represented by the series A and series B notes and the related
                  Subsidiary Guarantees;

                  (4) the incurrence by us or any of our Restricted Subsidiaries
                  of  Indebtedness  represented  by Capital  Lease  Obligations,
                  mortgage  financings or purchase  money  obligations,  in each
                  case, incurred for the purpose of financing all or any part of
                  the purchase price or cost of  construction  or improvement of
                  property,  plant or  equipment  used in the business of any of
                  the  Restricted  Subsidiary  or us, in an aggregate  principal
                  amount,   including  all  Permitted  Refinancing  Indebtedness
                  incurred  to refund,  refinance  or replace  any  Indebtedness
                  incurred  pursuant  to this clause  (4),  not to exceed  $10.0
                  million at any time outstanding;

                  (5) the incurrence by any of our Restricted Subsidiaries or us
                  of Permitted Refinancing  Indebtedness in exchange for, or the
                  net proceeds of which are used to refund, refinance or replace
                  Indebtedness  (other than intercompany  Indebtedness) that was
                  permitted  by the  indenture  to be  incurred  under the first
                  paragraph of this  covenant or clauses (2),  (3), (4), (5), or
                  (14) of this paragraph;

                  (6) the incurrence by us or any of our Restricted Subsidiaries
                  of  intercompany  Indebtedness  between  or  among  any of our
                  Restricted Subsidiaries and us; provided, however, that:

                           (a) if we or any  Guarantor  are the  obligor  on the
                           Indebtedness and the holders of Senior Debt under the
                           Credit  Facilities  do not have a  security  interest
                           therein,   the   Indebtedness   must   be   expressly
                           subordinated  to the prior payment in full in cash of
                           all  Obligations  with respect to the series B notes,
                           in our case, or the Subsidiary Guarantee, in the case
                           of a Guarantor; and

                           (b) (i) any subsequent issuance or transfer of Equity
                           Interests that results in the Indebtedness being held
                           by a Person other than us or a Restricted  Subsidiary
                           of ours and (ii)  any sale or other  transfer  of the
                           Indebtedness  to a  Person  that  is not  either  our
                           Restricted  Subsidiary or us will be deemed,  in each
                           case, to constitute an incurrence of the Indebtedness
                           by us or the Restricted  Subsidiary,  as the case may
                           be, that was not permitted by this clause (6);

                  (7)  Indebtedness consisting of Permitted Hedging Agreements;

                  (8)  the  guarantee  by  us  or  any  of  the   Guarantors  of
                  Indebtedness of us or a Restricted Subsidiary of ours that was
                  permitted  to  be  incurred  by  another   provision  of  this
                  covenant;

                  (9)  the  incurrence  by  our  Unrestricted   Subsidiaries  of
                  Non-Recourse Debt, provided, however, that if the Indebtedness
                  ceases to be Non-Recourse Debt of an Unrestricted  Subsidiary,

<PAGE>


                  that  event  will be deemed to  constitute  an  incurrence  of
                  Indebtedness  by a Restricted  Subsidiary of ours that was not
                  permitted by this clause (9);

                  (10) the accrual of interest, the accretion or amortization of
                  original  issue  discount,  the  payment  of  interest  on any
                  Indebtedness in the form of additional  Indebtedness  with the
                  same terms, and the payment of dividends on Disqualified Stock
                  in the  form  of  additional  shares  of  the  same  class  of
                  Disqualified  Stock will not be deemed to be an  incurrence of
                  Indebtedness or an issuance of Disqualified Stock for purposes
                  of this  covenant;  provided,  in each  case,  that the amount
                  thereof is included in our Fixed Charges as accrued;

                  (11)  obligations in respect of  performance  and surety bonds
                  and  completion  guarantees  provided  by us  or  any  of  our
                  Restricted Subsidiaries in the ordinary course of business;

                  (12)  Indebtedness  incurred  by us or any  of our  Restricted
                  Subsidiaries   constituting   reimbursement  obligations  with
                  respect to letters of credit issued in the ordinary  course of
                  business  in  respect  of  workers'   compensation  claims  or
                  self-insurance,   or  other   Indebtedness   with  respect  to
                  reimbursement type obligations regarding workers' compensation
                  claims;

                  (13)  the   incurrence   by  a   Receivables   Subsidiary   of
                  Indebtedness in a Qualified  Receivables  Transaction  that is
                  without recourse to us or any other  Restricted  Subsidiary of
                  ours  or our or  their  assets  (other  than  the  Receivables
                  Subsidiary  and its assets and, as to us or any  Subsidiary of
                  ours,  other than  pursuant  to  representations,  warranties,
                  covenants and indemnities  customary for these  transactions);
                  and

                  (14)  the   incurrence   by  us  or  any  of  our   Restricted
                  Subsidiaries of additional Indebtedness and/or the issuance of
                  Permitted Domestic Subsidiary  Preferred Stock by our Domestic
                  Subsidiaries  in an  aggregate  principal  amount (or accreted
                  value, as applicable) at any time  outstanding,  including all
                  Permitted   Refinancing   Indebtedness   incurred  to  refund,
                  refinance  or replace any  Indebtedness  incurred  pursuant to
                  this clause (14), not to exceed $20.0 million.

         For  purposes  of  determining  compliance  with  this  "Incurrence  of
Indebtedness  and Issuance of Preferred  Stock"  covenant,  in the event that an
item of  proposed  Indebtedness  meets  the  criteria  of more  than  one of the
categories of Permitted Debt described in clauses (1) through (14) above,  or is
entitled to be incurred  pursuant to the first  paragraph of this  covenant,  we
will be  permitted  to  classify  the  item of  Indebtedness  on the date of its
incurrence in any manner that complies with this covenant. Indebtedness incurred
under Credit Facilities  outstanding on the date on which notes are first issued
and  authenticated  under the indenture shall be deemed to have been incurred on
that date in reliance on the exception  provided by clause (1) of the definition
of Permitted Debt.

NO SENIOR SUBORDINATED DEBT

         We will not incur, create, issue, assume, guarantee or otherwise become
liable for any Indebtedness that is subordinate or junior in right of payment to
any of our  Senior  Debt and  senior in any  respect  in right of payment to the
series B notes. No Guarantor will incur,  create,  issue,  assume,  guarantee or
otherwise  become liable for any  Indebtedness  that is subordinate or junior in
right of payment to the Senior Debt of the  Guarantor  and senior in any respect
in right of payment to the Guarantor's Subsidiary Guarantee.

LIENS

         We will not, and will not permit any of our Restricted Subsidiaries to,
directly or indirectly, create, incur, assume or suffer to exist any Lien of any
kind  securing  Indebtedness  that is pari  passu  or  subordinated  in right of
payment  to the  series B notes on any asset now  owned or  hereafter  acquired,
except Permitted Liens,  unless the series B notes are secured by the Lien on an
equal and ratable basis.

<PAGE>


DIVIDEND AND OTHER PAYMENT RESTRICTIONS AFFECTING SUBSIDIARIES

         We will not, and will not permit any of our Restricted Subsidiaries to,
directly  or  indirectly,  create or permit  to exist or  become  effective  any
consensual   encumbrance  or  restriction  on  the  ability  of  any  Restricted
Subsidiary to:

                  (1) pay  dividends  or make  any  other  distributions  on its
                  Capital Stock to us or any of our Restricted Subsidiaries,  or
                  with  respect to any other  interest or  participation  in, or
                  measured by, its profits,  or pay any Indebtedness  owed to us
                  or any of our Restricted Subsidiaries;

                  (2)  make loans  or advances  to us or  any of  our Restricted
                  Subsidiaries; or

                  (3) transfer any of its  properties  or assets to us or any of
                  our Restricted Subsidiaries.

         However,  the preceding  restrictions will not apply to encumbrances or
restrictions existing under or by reason of:

                  (1)  agreements existing  on the date  of the indenture, as in
                  effect on the date of the indenture;

                  (2)  the indenture,  the series  B notes  and  the  Subsidiary
                  Guarantees;

                  (3)  applicable law;

                  (4) any instrument governing  Indebtedness or Capital Stock of
                  a Person acquired by us or any of our Restricted  Subsidiaries
                  as in effect  at the time of the  acquisition  (except  to the
                  extent the  Indebtedness was incurred in connection with or in
                  contemplation  of  the  acquisition),   which  encumbrance  or
                  restriction is not applicable to any Person, or the properties
                  or  assets  of any  Person,  other  than  the  Person,  or the
                  property or assets of the Person, so acquired,  provided that,
                  in the case of Indebtedness, the Indebtedness was permitted by
                  the terms of the indenture to be incurred;

                  (5) customary  non-assignment  provisions in leases,  licenses
                  and other  agreements  entered into in the ordinary  course of
                  business;

                  (6) purchase money  obligations  for property  acquired in the
                  ordinary  course of business that impose  restrictions  on the
                  property so acquired of the nature  described in clause (3) of
                  the preceding paragraph;

                  (7) any  agreement  for the  sale or  other  disposition  of a
                  Restricted  Subsidiary  that restricts  distributions  by that
                  Restricted Subsidiary pending its sale or other disposition;

                  (8)  Permitted  Refinancing  Indebtedness,  provided  that the
                  restrictions   contained  in  the  agreements   governing  the
                  Permitted  Refinancing  Indebtedness are no more  restrictive,
                  taken as a  whole,  than  those  contained  in the  agreements
                  governing the Indebtedness being refinanced;

                  (9) Liens  securing  Indebtedness  otherwise  permitted  to be
                  incurred pursuant to the provisions of the covenant  described
                  above under the caption  "--Liens" that limit the right of the
                  debtor to dispose of the assets subject to the Lien;

                  (10)   provisions   with   respect  to  the   disposition   or
                  distribution   of  assets  or   property   in  joint   venture
                  agreements,  asset sale agreements,  stock sale agreements and
                  other similar  agreements  entered into in the ordinary course
                  of business;

                  (11)  restrictions  on cash or  other  deposits  or net  worth
                  imposed  by  customers  under  contracts  entered  into in the
                  ordinary course of business;

<PAGE>

                  (12)  Indebtedness  or  other  contractual  requirements  of a
                  Receivables   Subsidiary  in   connection   with  a  Qualified
                  Receivables Transaction,  provided that the restrictions apply
                  only to the Receivables Subsidiary and its Subsidiaries; and

                  (13)  any   encumbrances  or   restrictions   imposed  by  any
                  amendments, modifications,  restatements, renewals, increases,
                  supplements,  refundings,  replacements or refinancings of the
                  contracts,  instruments or obligations  referred to in clauses
                  (1)  through  (12)  above;   provided  that  the   amendments,
                  modifications, restatements, renewals, increases, supplements,
                  refundings,  replacements  or  refinancings  are,  in the good
                  faith judgment of our Board of Directors,  no more restrictive
                  with  respect to the  dividend or other  payment  restrictions
                  prior to the amendment,  modification,  restatement,  renewal,
                  increase, supplement, refunding, replacement or refinancing.

MERGER, CONSOLIDATION OR SALE OF ASSETS

         We may not (1)  consolidate  or  merge  with  or  into  another  Person
(whether  or  not  we  are  the  surviving  corporation);  or  (2)  directly  or
indirectly,  sell,  assign,  transfer,  convey or  otherwise  dispose  of all or
substantially  all  of  the  properties  or  assets  of us  and  our  Restricted
Subsidiaries taken as a whole, in one or more related  transactions,  to another
Person; unless:

                  (1) either: (a) we are the surviving  corporation;  or (b) the
                  Person formed by or surviving any  consolidation or merger (if
                  other  than  us) or to  which  a sale,  assignment,  transfer,
                  conveyance  or other  disposition  shall  have  been made is a
                  corporation organized or existing under the laws of the United
                  States, any state thereof or the District of Columbia;

                  (2) the Person  formed by or surviving  the  consolidation  or
                  merger  (if  other  than  us) or the  Person  to which a sale,
                  assignment,  transfer,  conveyance or other  disposition shall
                  have been made assumes all our Obligations  under the series B
                  notes,  the indenture and the  registration  rights  agreement
                  pursuant to agreements reasonably satisfactory to the trustee;

                  (3)  immediately  after the transaction no Default or Event of
                  Default exists; and

                  (4) we, or the Person formed by or surviving the consolidation
                  or merger (if other than us), or to which a sale,  assignment,
                  transfer, conveyance or other disposition shall have been made
                  will,  on the date of the  transaction  after giving pro forma
                  effect thereto and any related  financing  transactions  as if
                  the same  had  occurred  at the  beginning  of the  applicable
                  four-quarter  period,  be permitted to incur at least $1.00 of
                  additional  Indebtedness pursuant to the Fixed Charge Coverage
                  Ratio test set forth in the first  paragraph  of the  covenant
                  described   above   under   the   caption   "--Incurrence   of
                  Indebtedness and Issuance of Preferred Stock."

         In  addition,  we  may  not,  directly  or  indirectly,  lease  all  or
substantially  all  of  our  properties  or  assets,  in  one  or  more  related
transactions,  to any  other  Person.  This  "Merger,  Consolidation  or Sale of
Assets" covenant will not apply to a sale, assignment,  transfer,  conveyance or
other  disposition  of  assets  between  or among  us and any of our  Restricted
Subsidiaries.

DESIGNATION OF RESTRICTED AND UNRESTRICTED SUBSIDIARIES

         Our Board of Directors may designate any Restricted Subsidiary to be an
Unrestricted  Subsidiary  if that  designation  would not cause a Default.  If a
Restricted Subsidiary is designated as an Unrestricted Subsidiary, the aggregate
fair market value of all outstanding  Investments owned by us and our Restricted
Subsidiaries in the Restricted  Subsidiary so designated will be deemed to be an
Investment  made as of the time of the  designation  and will either  reduce the
amount  available  for  Restricted  Payments  under the first  paragraph  of the
covenant described above under the caption "--Restricted Payments" or reduce the
amount  available  for  future  Investments  under  one or more  clauses  of the
definition of Permitted  Investments,  as we shall  determine.  That designation
will only be permitted if the Investment  would be permitted at that time and if
the Restricted  Subsidiary  otherwise  meets the  definition of an  Unrestricted

<PAGE>


Subsidiary.  Our Board of Directors may redesignate any Unrestricted  Subsidiary
to be a Restricted Subsidiary if the redesignation would not cause a Default.

TRANSACTIONS WITH AFFILIATES

         We will not, and will not permit any of our Restricted Subsidiaries to,
make any payment to, or sell, lease, transfer or otherwise dispose of any of our
or their  properties  or assets to, or purchase any property or assets from,  or
enter into or make or amend any transaction, contract, agreement, understanding,
loan,  advance or guarantee with, or for the benefit of, any Affiliate (each, an
"Affiliate Transaction"), unless:

                  (1) the  Affiliate  Transaction  is on terms  that are no less
                  favorable to us or the  relevant  Restricted  Subsidiary  than
                  those  that  would  have  been   obtained   in  a   comparable
                  transaction  by  us  or  the  Restricted  Subsidiary  with  an
                  unrelated Person; and

                  (2) with  respect to any  Affiliate  Transaction  or series of
                  related    Affiliate    Transactions    involving    aggregate
                  consideration  in  excess  of  $2.0  million,   the  Affiliate
                  Transaction  complies  with this  covenant  and the  Affiliate
                  Transaction   has  been   approved   by  a  majority   of  the
                  disinterested members of our Board of Directors; and

                  (3) with  respect to any  Affiliate  Transaction  or series of
                  related    Affiliate    Transactions    involving    aggregate
                  consideration  in  excess  of  $10.0  million,  our  Board  of
                  Directors  or  the  Board  of  Directors  of  any   Restricted
                  Subsidiary  party  to the  Affiliate  Transaction  shall  have
                  received  an opinion as to the  fairness to the Holders of the
                  Affiliate Transaction from a financial point of view issued by
                  an  accounting,   appraisal  or  investment  banking  firm  of
                  national standing.

         The  following  items shall not be deemed to be Affiliate  Transactions
and, therefore, will not be subject to the provisions of the prior paragraph:

                  (1) any employment  agreement entered into by us or any of our
                  Restricted Subsidiaries in the ordinary course of business and
                  consistent  with the  past  practice  of us or the  Restricted
                  Subsidiary;

                  (2)  transactions  between or  among  us and/or our Restricted
                  Subsidiaries;

                  (3)  transactions  with a Person that is our Affiliate  solely
                  because we own an Equity Interest in the Person;

                  (4)  payment of reasonable directors fees;

                  (5)  sales of Equity Interests (other than Disqualified Stock)
                  to our Affiliates;

                  (6)  Restricted  Payments that are permitted by the provisions
                  of  the   indenture   described   above   under  the   caption
                  "--Restricted Payments;"

                  (7) loans by us and our Restricted  Subsidiaries  to employees
                  of us of our Restricted  Subsidiaries  that are entered in the
                  ordinary course of business and that are approved by our Board
                  of Directors in good faith;

                  (8) payments of customary  arms'-length  fees by us and any of
                  our  Restricted  Subsidiaries  to  investment  banking  firms,
                  financial  consultants  and  financial  advisors  made for any
                  financial  advisory,  financing,   underwriting  or  placement
                  services or in respect of other investment banking activities,
                  including, without limitation, in connection with acquisitions
                  and divestitures, in each case to the extent that the same are
                  approved  by a majority  of the  disinterested  members of our
                  Board of Directors in good faith;

<PAGE>


                  (9) transactions  with customers,  clients,  suppliers,  joint
                  venture   partners  or  purchasers  or  sellers  of  goods  or
                  services,  in each case in the  ordinary  course  of  business
                  (including,  without  limitation,  pursuant  to joint  venture
                  agreements)  and otherwise in compliance with the terms of the
                  indenture that are fair to us or our Restricted  Subsidiaries,
                  in the reasonable  determination  of our Board of Directors or
                  senior  management,  or are on terms at least as  favorable as
                  might  reasonably  have  been  obtained  at the  time  from an
                  unaffiliated party;

                  (10) any  agreement as in effect on the date of the  indenture
                  or any amendment to the agreement (so long as the amendment is
                  not  disadvantageous  to the  Holders of the series B notes in
                  any respect) or any transaction contemplated thereby;

                  (11)  transactions  between or among us and/or our  Restricted
                  Subsidiaries or transactions between a Receivables  Subsidiary
                  and any  Person in which  the  Receivables  Subsidiary  has an
                  Investment; and

                  (12)  any  transaction   with  an  Affiliate  where  the  only
                  consideration paid by us or any of our Restricted Subsidiaries
                  is our Capital Stock (other than Disqualified Stock).

ADDITIONAL SUBSIDIARY GUARANTEES

         If we or any of our Restricted  Subsidiaries  acquire or create another
Domestic  Subsidiary  after the date of the indenture  (other than a Receivables
Subsidiary), then that newly acquired or created Domestic Subsidiary will become
a  Guarantor  and  execute a  supplemental  indenture  and deliver an opinion of
counsel satisfactory to the trustee within 20 business days of the date on which
it was acquired or created.  This covenant will not apply to any Subsidiary that
has been properly  designated as an  Unrestricted  Subsidiary in accordance with
the  indenture  for so  long  as it  continues  to  constitute  an  Unrestricted
Subsidiary.  The  designation  may be made effective  concurrent with the Person
becoming a Domestic Subsidiary.

BUSINESS ACTIVITIES

         We will not,  and will not  permit  any  Subsidiary  to,  engage in any
business other than Permitted  Businesses,  except to the extent as would not be
material to us and our Subsidiaries taken as a whole.

PAYMENTS FOR CONSENT

         We will not, and will not permit any of our Restricted Subsidiaries to,
directly or indirectly,  pay or cause to be paid any consideration to or for the
benefit of any Holder of series B notes for or as an  inducement to any consent,
waiver or amendment of any of the terms or  provisions  of the  indenture or the
notes unless the  consideration is offered to be paid and is paid to all Holders
of the  series B notes that  consent,  waive or agree to amend in the time frame
set forth in the  solicitation  documents  relating  to the  consent,  waiver or
agreement.

REPORTS

         Whether  or  not  required  by the  SEC,  so  long  as  any  notes  are
outstanding,  we will furnish to the Holders of series B notes,  within the time
periods specified in the SEC's rules and regulations:

                   (1) all quarterly and annual financial information that would
                  be required to be  contained in a filing with the SEC on Forms
                  10-Q  and  10-K  if we were  required  to  file  these  Forms,
                  including a "Management's Discussion and Analysis of Financial
                  Condition and Results of Operations"  and, with respect to the
                  annual  information  only,  a report on the  annual  financial
                  statements by our certified independent accountants; and

                   (2) all  current  reports  that would be required to be filed
                  with the SEC on Form  8-K if we were  required  to file  these
                  reports.

<PAGE>


         In  addition,   following  the   consummation  of  the  exchange  offer
contemplated by the registration  rights  agreement,  whether or not required by
the SEC, we will file a copy of all of the information  and reports  referred to
in clauses  (1) and (2) above with the SEC for  public  availability  within the
time periods  specified in the SEC's rules and regulations  (unless the SEC will
not accept the filing) and make the information available to securities analysts
and prospective  investors upon request. In addition, we and the Guarantors have
agreed  that,  for so long as any  series B notes  remain  outstanding,  we will
furnish to the Holders and to  securities  analysts and  prospective  investors,
upon their request,  the information  required to be delivered  pursuant to Rule
144A(d)(4) under the Securities Act.

EVENTS OF DEFAULT AND REMEDIES

         Each of the following is an Event of Default:

                  (1) default  for 30 days in the  payment  when due of interest
                  on, or Liquidated  Damages with respect to, the series B notes
                  whether or not prohibited by the  subordination  provisions of
                  the indenture;

                  (2)  default  in  payment  when due of the  principal  of,  or
                  premium,  if  any,  on the  series  B  notes,  whether  or not
                  prohibited by the subordination provisions of the indenture;

                  (3)  failure by any of our  Subsidiaries  or us to comply with
                  the provisions  described under the captions  "--Repurchase at
                  the Option of Holders--Change of Control" and "--Repurchase at
                  the Option of Holders--Asset Sales;"

                  (4)  failure by any of our  Subsidiaries  or us to comply with
                  any of the other  agreements  in the indenture or the series B
                  notes for 60 days after notice from the trustee or the Holders
                  of at least 25% in  principal  amount of the then  outstanding
                  series B notes;

                  (5) default under any mortgage,  indenture or instrument under
                  which  there may be issued or by which there may be secured or
                  evidenced any  Indebtedness for money borrowed by us or any of
                  our  Subsidiaries (or the payment of which is guaranteed by us
                  or any of our  Subsidiaries),  which default  continues for at
                  least  10 days  whether  the  Indebtedness  or  guarantee  now
                  exists, or is created after the date of the indenture, if that
                  default:

                           (a) is caused by a failure to pay Indebtedness at its
                           stated final  maturity  (after  giving  effect to any
                           applicable    grace    period    provided   in   that
                           Indebtedness) (a "Payment Default"); or

                           (b)  results  in the acceleration of the Indebtedness
                           prior to its stated final maturity,

                  and, in each case, the principal  amount of the  Indebtedness,
                  together with the principal  amount of any other  Indebtedness
                  under which there has been a Payment  Default or the  maturity
                  of which has been so accelerated,  aggregates $10.0 million or
                  more;

                  (6)  failure  by us or any of our  Subsidiaries  to pay  final
                  judgments  aggregating  in  excess  of  $7.5  million,   which
                  judgments  are not paid,  discharged or stayed for a period of
                  60 days  after the  judgment  or  judgments  become  final and
                  non-appealable;

                  (7) any  Guarantor,  or any  Person  acting  on  behalf of any
                  Guarantor,  shall deny or disaffirm its obligations  under its
                  Subsidiary Guarantee;

                  (8)  except as  permitted  by the  indenture,  any  Subsidiary
                  Guarantee  issued by any Significant  Subsidiary shall be held
                  in any judicial  proceeding to be  unenforceable or invalid or
                  shall cease for any reason to be in full force and effect; and


<PAGE>


                  (9)  events  of  bankruptcy  or  insolvency  described  in the
                  indenture  with  respect  to  us or  any  of  our  Significant
                  Subsidiaries  or  any  group  of  Subsidiaries   that,   taken
                  together, would constitute a Significant Subsidiary.

         In the case of an Event of  Default  arising  from  specific  events of
bankruptcy  or  insolvency  with  respect  to  us  or  any  of  our  Significant
Subsidiaries,  all  outstanding  series  B notes  will  become  due and  payable
immediately  without  further  action or notice.  If any other  Event of Default
occurs  and is  continuing,  the  trustee  or the  Holders  of at  least  25% in
principal  amount of the then  outstanding  series B notes may  declare  all the
series  B  notes  to be due and  payable  immediately.  However,  so long as any
Indebtedness  permitted to be incurred pursuant to the Credit Agreement shall be
outstanding,  an acceleration of the series B notes shall not be effective until
the earlier of an acceleration of any  Indebtedness  under the Credit  Agreement
and five business days after  receipt by us and the  administrative  agent under
the Credit Agreement of written notice of that acceleration.

         Holders  of the series B notes may not  enforce  the  indenture  or the
series  B notes  except  as  provided  in the  indenture.  Subject  to  specific
limitations,  Holders of a majority in principal  amount of the then outstanding
series B notes may direct the trustee in its exercise of any trust or power. The
trustee may withhold from Holders of the series B notes notice of any continuing
Default or Event of Default if it determines that withholding notice is in their
interest,  except a Default  or Event of  Default  relating  to the  payment  of
principal or interest or Liquidated Damages.

         The Holders of a majority in  aggregate  principal  amount of the notes
then outstanding by notice to the trustee may on behalf of the Holders of all of
the notes waive any  existing  Default or Event of Default and its  consequences
under the  indenture  except a  continuing  Default  or Event of  Default in the
payment of interest or Liquidated  Damages on, or the principal of, the series B
notes.

         In the case of any Event of Default  occurring by reason of any willful
action or inaction  taken or not taken by or on behalf of us with the  intention
of avoiding  payment of the premium that we would have had to pay if we then had
elected  to  redeem  the  series B notes  pursuant  to the  optional  redemption
provisions  of the  indenture,  an  equivalent  premium  will also become and be
immediately due and payable to the extent permitted by law upon the acceleration
of the series B notes. If an Event of Default occurs prior to November 15, 2004,
by reason of any  willful  action  (or  inaction)  taken (or not taken) by or on
behalf of us with the intention of avoiding the prohibition on redemption of the
notes prior to November 15, 2004,  then the premium  specified in the  indenture
will also become immediately due and payable to the extent permitted by law upon
the acceleration of the series B notes.

         We  are  required  to  deliver  to the  trustee  annually  a  statement
regarding  compliance with the indenture.  Upon becoming aware of any Default or
Event of  Default,  we are  required  to  deliver  to the  trustee  a  statement
specifying the Default or Event of Default.

NO PERSONAL LIABILITY OF DIRECTORS, OFFICERS, EMPLOYEES AND STOCKHOLDERS

         No director,  officer,  employee,  incorporator or stockholder of us or
any Guarantor, as such, will have any liability for any obligations of us or the
Guarantors under the series B notes, the indenture, the Subsidiary Guarantees or
for any claim based on, in respect of, or by reason of, the obligations or their
creation.  Each Holder of series B notes by accepting a series B note waives and
releases all liability. The waiver and release are part of the consideration for
issuance of the notes.  The waiver might not be  effective to waive  liabilities
under the federal securities laws.

LEGAL DEFEASANCE AND COVENANT DEFEASANCE

         We may,  at our  option  and at any  time,  elect  to  have  all of our
Obligations  discharged with respect to the  outstanding  series B notes and all
Obligations  of the  Guarantors  discharged  with  respect  to their  Subsidiary
Guarantees ("Legal Defeasance") except for:

                  (1) the  rights of Holders  of  outstanding  series B notes to
                  receive  payments in respect of the  principal of, or interest
                  or premium  and  Liquidated  Damages,  if any, on the series B
                  notes when the  payments  are due from the trust  referred  to
                  below;


<PAGE>


                  (2)  our  obligations  with  respect  to the  series  B  notes
                  concerning  issuing temporary series B notes,  registration of
                  series B notes, mutilated, destroyed, lost or stolen notes and
                  the  maintenance  of an office or agency for payment and money
                  for security payments held in trust;

                  (3) the rights,  powers,  trusts, duties and immunities of the
                  trustee, and our and the Guarantor's obligations in connection
                  therewith; and

                  (4)  the Legal Defeasance provisions of the indenture.

         In addition,  we may, at our option and at any time,  elect to have the
obligations of us and the Guarantors released with respect to specific covenants
that are described in the indenture  ("Covenant  Defeasance") and thereafter any
omission to comply with those  covenants shall not constitute a Default or Event
of Default with respect to the series B notes. In the event Covenant  Defeasance
occurs,  some  events  (not  including  non-payment,  bankruptcy,  receivership,
rehabilitation  and insolvency  events) described under "Events of Default" will
no longer constitute an Event of Default with respect to the series B notes.

         In order to exercise either Legal Defeasance or Covenant Defeasance:

                  (1) we must  irrevocably  deposit with the trustee,  in trust,
                  for the benefit of the Holders of the series B notes,  cash in
                  U.S.  dollars,   non-callable  government  securities,   or  a
                  combination thereof, in the amounts as will be sufficient,  in
                  the opinion of a  nationally  recognized  firm of  independent
                  public  accountants,  to pay the principal of, or interest and
                  premium and  Liquidated  Damages,  if any, on the  outstanding
                  series B notes on the  stated  maturity  or on the  applicable
                  redemption  date,  as the  case  may be,  and we must  specify
                  whether  the series B notes are being  defeased to maturity or
                  to a particular redemption date;

                  (2) in the case of Legal  Defeasance,  we shall have delivered
                  to the trustee an opinion of counsel reasonably  acceptable to
                  the trustee  confirming  that (a) we have  received  from,  or
                  there has been  published by, the Internal  Revenue  Service a
                  ruling or (b) since the date of the indenture,  there has been
                  a change in the  applicable  federal income tax law, in either
                  case to the effect  that,  and based  thereon  the  opinion of
                  counsel  shall confirm  that,  the Holders of the  outstanding
                  series B notes  will not  recognize  income,  gain or loss for
                  federal   income  tax  purposes  as  a  result  of  the  Legal
                  Defeasance  and will be subject  to federal  income tax on the
                  same  amounts,  in the same  manner  and at the same  times as
                  would  have  been the  case if the  Legal  Defeasance  had not
                  occurred;

                  (3)  in  the  case  of  Covenant  Defeasance,  we  shall  have
                  delivered  to the  trustee an  opinion  of counsel  reasonably
                  acceptable to the trustee  confirming  that the Holders of the
                  outstanding series B notes will not recognize income,  gain or
                  loss for  federal  income  tax  purposes  as a  result  of the
                  Covenant  Defeasance and will be subject to federal income tax
                  on the same amounts,  in the same manner and at the same times
                  as would have been the case if the Covenant Defeasance had not
                  occurred;

                  (4) no Default or Event of Default  shall have occurred and be
                  continuing on the date of the deposit (other than a Default or
                  Event of Default resulting from the incurrence of Indebtedness
                  all or a  portion  of the  proceeds  of which  will be used to
                  defease the series B notes pursuant to either Legal Defeasance
                  or Covenant Defeasance concurrently with the incurrence);

                  (5) the  Legal  Defeasance  or  Covenant  Defeasance  will not
                  result in a breach or  violation  of, or  constitute a Default
                  under any  material  agreement or  instrument  (other than the
                  indenture) to which we or any of our  Subsidiaries are a party
                  or by which we, or any of our Subsidiaries are bound;

                  (6) we must  deliver to the trustee an  officers'  certificate
                  stating that the deposit was not made by us with the intent of
                  preferring  the  Holders  of  series B notes  over  our  other
                  creditors with the intent of defeating, hindering, delaying or
                  defrauding our creditors or others; and


<PAGE>


                  (7) we must  deliver to the trustee an  officers'  certificate
                  and an opinion of counsel,  each stating  that all  conditions
                  precedent  relating to the Legal  Defeasance  or the  Covenant
                  Defeasance have been complied with.

AMENDMENT, SUPPLEMENT AND WAIVER

         Except  as  provided  in the  next  three  succeeding  paragraphs,  the
indenture  or the notes may be amended or  supplemented  with the consent of the
Holders of at least a majority in principal amount of the notes then outstanding
(including, without limitation,  consents obtained in connection with a purchase
of, or tender offer or exchange offer for,  notes),  and any existing default or
compliance  with any  provision of the indenture or the notes may be waived with
the  consent  of the  Holders  of a  majority  in  principal  amount of the then
outstanding  notes  (including,   without   limitation,   consents  obtained  in
connection with a purchase of, or tender offer or exchange offer for, notes).

         Without the consent of each Holder affected, an amendment or waiver may
not (with respect to any notes held by a non-consenting Holder):

                  (1) reduce  the  principal  amount of notes whose Holders must
                  consent to an amendment, supplement or waiver;

                  (2) reduce the  principal  of or change the fixed  maturity of
                  any  note  or  alter  the  provisions   with  respect  to  the
                  redemption of the notes (other than provisions relating to the
                  covenants  described above under the caption  "--Repurchase at
                  the Option of Holders");

                  (3)  reduce  the rate  of or  change  the time  for payment of
                  interest on any note;

                  (4) waive  a Default  or Event of  Default  in the  payment of
                  principal of, or interest or premium,  or Liquidated  Damages,
                  if any, on the notes (except a rescission of  acceleration  of
                  the notes by the Holders of at least a majority  in  aggregate
                  principal  amount of the  notes  and a waiver  of the  payment
                  default that resulted from the acceleration);

                  (5) make any note  payable in money other than that stated  in
                  the notes;

                  (6)  make  any  change  in  the  provisions  of the  indenture
                  relating to waivers of past  Defaults or the rights of Holders
                  of notes to receive  payments of principal  of, or interest or
                  premium or Liquidated Damages, if any, on the notes;

                  (7)  waive  a  redemption  payment  with  respect  to any note
                  (other  than a  payment  required  by  one  of  the  covenants
                  described above under the caption  "--Repurchase at the Option
                  of Holders");

                  (8) release  any Guarantor from any of its  obligations  under
                  its  Subsidiary   Guarantee  or  the   indenture,   except  in
                  accordance with the terms of the indenture; or

                  (9) make any  change in the  preceding  amendment  and  waiver
                  provisions.

         Notwithstanding  the  preceding,  without  the consent of any Holder of
notes, the Guarantors,  the trustee and we may amend or supplement the indenture
or the notes:

                  (1)  to cure any ambiguity, defect or inconsistency;

                  (2)  to provide for uncertificated notes in addition to  or in
                  place of certificated notes;

                  (3) to  provide  for  the  assumption  of our  Obligations  to
                  Holders of notes in the case of a merger or  consolidation  or
                  sale of all or substantially all of our assets;


<PAGE>

                  (4) to  make any change  that  would  provide  any  additional
                  rights or  benefits  to the  Holders of notes or that does not
                  adversely  affect the legal rights under the  indenture of any
                  Holder; or

                  (5) to comply with requirements of the SEC in order to  effect
                  or maintain the qualification of the indenture under the Trust
                  Indenture Act.

SATISFACTION AND DISCHARGE

         The indenture will be discharged and will cease to be of further effect
as to all notes issued thereunder, when:

                  (1)  either:

                            (a) all notes that have been  authenticated  (except
                           lost,  stolen  or  destroyed  notes  that  have  been
                           replaced  or paid and notes for whose  payment  money
                           has   theretofore   been   deposited   in  trust  and
                           thereafter  repaid to us) have been  delivered to the
                           trustee for cancellation; or

                            (b) all notes  that have not been  delivered  to the
                           trustee for cancellation  have become due and payable
                           by reason of the making of a notice of  redemption or
                           otherwise  or will become due and payable  within one
                           year we or any Guarantor has irrevocably deposited or
                           caused  to be  deposited  with the  trustee  as trust
                           funds in trust solely for the benefit of the Holders,
                           cash  in  U.S.   dollars,   non-callable   government
                           securities,  or a combination  thereof, in amounts as
                           will  be  sufficient  without  consideration  of  any
                           reinvestment  of interest,  to pay and  discharge the
                           entire Indebtedness on the notes not delivered to the
                           trustee for cancellation  for principal,  premium and
                           Liquidated  Damages,  if any, and accrued interest to
                           the date of maturity or redemption;

                  (2) no Default or Event of Default shall have occurred and  be
                  continuing  on the date of the  deposit  or  shall  occur as a
                  result of the  deposit  and the  deposit  will not result in a
                  breach or violation  of, or  constitute a default  under,  any
                  other instrument to which we or any Guarantor is a party or by
                  which we or any Guarantor is bound;

                  (3) we or any Guarantor has paid or caused to be paid all sums
                  payable by us under the indenture; and

                  (4) we have delivered irrevocable instructions to the  trustee
                  under the  indenture to apply the  deposited  money toward the
                  payment of the notes at maturity or the  redemption  date,  as
                  the case may be.

In addition,  we must deliver an officers' certificate and an opinion of counsel
to the  trustee  stating  that all  conditions  precedent  to  satisfaction  and
discharge have been satisfied.

CONCERNING THE TRUSTEE

         If the trustee becomes a creditor of us or any Guarantor, the indenture
limits  its right to obtain  payment of claims in some  cases,  or to realize on
property  received in respect of a claim as security or  otherwise.  The trustee
will be permitted to engage in other  transactions;  however, if it acquires any
conflicting interest it must eliminate the conflict within 90 days, apply to the
SEC for permission to continue or resign.

         The Holders of a majority in principal  amount of the then  outstanding
notes will have the right to direct the time, method and place of conducting any
proceeding  for  exercising  any remedy  available  to the  trustee,  subject to
exceptions.  The indenture provides that in case an Event of Default shall occur
and be continuing,  the trustee will be required,  in the exercise of its power,
to use the degree of care of a prudent  man in the  conduct of his own  affairs.
Subject to the  provisions,  the trustee will be under no obligation to exercise

<PAGE>


any of its rights or powers under the  indenture at the request of any Holder of
series B notes, unless the Holder shall have offered to the trustee security and
indemnity satisfactory to it against any loss, liability or expense.

ADDITIONAL INFORMATION

         Anyone who receives this  prospectus may obtain a copy of the indenture
and registration rights agreement without charge by writing to Stericycle, Inc.,
28161 N. Keith Drive, Lake Forest, IL 60045, Attention: Chief Financial Officer.

BOOK-ENTRY, DELIVERY AND FORM

         The series B notes will be issued in the form of one or more registered
global notes without interest coupons  (collectively,  the "Global Notes"). Upon
issuance,  the Global Notes will be deposited with the trustee, as custodian for
The Depository Trust Company  ("DTC"),  in New York, New York, and registered in
the name of DTC or its  nominee for credit to the  accounts of DTC's  Direct and
indirect participants (as defined below).

         The Global Notes may be transferred,  in whole and not in part, only to
another  nominee  of DTC or to a  successor  of DTC or its  nominee  in  limited
circumstances.  Beneficial  interests in the Global  Notes may be exchanged  for
series  B  notes  in  certificated  form  in  some  limited  circumstances.  See
"--Transfer of Interests in Global Notes for  Certificated  Notes." In addition,
transfer  of  beneficial  interests  in any  Global  Note will be subject to the
applicable  rules and procedures of DTC and its direct or indirect  participants
(including, if applicable,  those of Euroclear and CEDEL), which may change from
time to time.

         Initially,  the trustee  will act as paying  agent and  registrar.  The
series B notes may be presented for registration of transfer and exchange at the
offices of the registrar.

DEPOSITARY PROCEDURES

         The following  description  of the  operations  and  procedures of DTC,
Euroclear  and Cedel are  provided  solely  as a matter  of  convenience.  These
operations  and  procedures  are solely  within the control of their  respective
settlement  systems and are subject to change by them. We take no responsibility
for these  operations  and  procedures  and urge  investors  to contact the DTC,
Euroclear or Cedel or their participants directly to discuss these matters.

         DTC has advised us that it is a  limited-purpose  trust company created
to hold  securities  for its  participating  organizations,  referred to in this
prospectus  as  "direct  participants,"  and to  facilitate  the  clearance  and
settlement of  transactions  in those  securities  between  direct  participants
through electronic  book-entry changes in accounts of direct  participants.  The
direct  participants  include  securities  brokers  and dealers  (including  the
initial  purchasers),  banks, trust companies,  clearing  corporations and other
organizations,  including  Euroclear  and CEDEL.  Access to DTC's system is also
available to other entities that clear through or maintain a direct or indirect,
custodial relationship with a direct participant, referred to in this prospectus
as "indirect participants."

         DTC has advised us that, pursuant to DTC's procedures:

                   (1) upon  deposit of the Global  Notes,  DTC will  credit the
                  accounts of the direct participants designated by the exchange
                  agent  with  portions  of the  principal  amount of the Global
                  Notes; and

                   (2) DTC will maintain  records of the ownership  interests by
                  and between direct participants. DTC will not maintain records
                  of the  ownership  interests  of, or the transfer of ownership
                  interests  by and  between,  indirect  participants  or  other
                  owners of  beneficial  interests in the Global  Notes.  direct
                  participants and indirect participants must maintain their own
                  records of the  ownership  interests  of, and the  transfer of
                  ownership interests by and between,  indirect participants and
                  other owners of beneficial interests in the Global Notes.

<PAGE>


         The laws of some states in the United States  require that some Persons
take physical delivery in definitive, certificated form, of securities that they
own. This may limit or curtail the ability to transfer beneficial interests in a
Global  Note to these  Persons.  Because  DTC can act only on  behalf  of direct
participants,  which in turn act on behalf of indirect  participants and others,
the ability of a Person having a beneficial  interest in a Global Note to pledge
the interest to Persons or entities that are not direct  participants in DTC, or
to otherwise  take actions in respect of the  interests,  may be affected by the
lack of physical certificates  evidencing the interests.  For other restrictions
on the transferability of the notes see the subheading "--Transfers of Interests
in Global Notes for Certificated Notes."

         EXCEPT AS DESCRIBED  UNDER THE SUBHEADING  "--TRANSFERS OF INTERESTS IN
GLOBAL NOTES FOR  CERTIFICATED  NOTES,"  OWNERS OF  BENEFICIAL  INTERESTS IN THE
GLOBAL NOTES WILL NOT HAVE SERIES B NOTES  REGISTERED  IN THEIR NAMES,  WILL NOT
RECEIVE PHYSICAL DELIVERY OF SERIES B NOTES IN CERTIFICATED FORM AND WILL NOT BE
CONSIDERED THE REGISTERED  OWNERS OR HOLDERS THEREOF UNDER THE INDENTURE FOR ANY
PURPOSE.

         Under the terms of the  indenture,  we, the  Guarantors and the trustee
will  treat  the  Persons  in whose  names  the  series B notes  are  registered
(including the series B notes represented by Global Notes) as the owners thereof
for the  purpose  of  receiving  payments  and for  any and all  other  purposes
whatsoever.  Payments in respect of the principal,  premium, Liquidated Damages,
if any,  and  interest  on  Global  Notes  registered  in the name of DTC or its
nominee  will be payable by the trustee to DTC or its nominee as the  registered
Holder under the indenture.  Consequently, neither we, the trustee nor any agent
of ours or of the trustee has or will have any responsibility or liability for:

                   (1) any aspect of DTC's  records or any direct  participant's
                  or indirect participant's records relating to or payments made
                  on account of  beneficial  ownership  interests  in the Global
                  Notes or for  maintaining,  supervising  or  reviewing  any of
                  DTC's  records  or  any  direct   participant's   or  indirect
                  participant's  records  relating to the  beneficial  ownership
                  interests in any Global Note; or

                   (2) any other matter relating to the actions and practices of
                  DTC   or  any  of  its   direct   participants   or   indirect
                  participants.

         DTC has advised us that its current  payment  practice (for payments of
principal,  interest and the like) with respect to securities such as the series
B notes is to credit the accounts of the relevant direct  participants  with the
payment on the payment date in amounts proportionate to the direct participant's
respective  ownership  interests in the Global Notes as shown on DTC's  records.
Payments by direct  participants  and indirect  participants  to the  beneficial
owners of the notes will be  governed  by standing  instructions  and  customary
practices  between them and will not be the  responsibility of DTC, the trustee,
the Guarantors or us. Neither we, the Guarantors, nor the trustee will be liable
for any delay by DTC or its direct  participants  or  indirect  participants  in
identifying  the  beneficial  owners of the notes,  and the  trustee  and we may
conclusively  rely on and will be protected in relying on instructions  from DTC
or its nominee as the registered owner of the notes for all purposes.

         The Global Notes will trade in DTC's Same-day Funds  Settlement  System
and, therefore, transfers between direct participants in DTC will be effected in
accordance with DTC's procedures,  and will be settled in immediately  available
funds. Transfers between indirect participants (other than indirect participants
who hold an  interest  in the notes  through  Euroclear  or  CEDEL)  who hold an
interest  through a direct  participant  will be effected in accordance with the
procedures of the direct  participant  but generally  will settle in immediately
available  funds.  Transfers  between and among indirect  participants  who hold
interests  in the notes  through  Euroclear  and CEDEL will be  effected  in the
ordinary way in accordance with their respective rules and operating procedures.

         Subject to compliance with the transfer restrictions  applicable to the
series  B  notes  described  herein,   cross-market   transfers  between  direct
participants  in DTC,  on the one  hand,  and  indirect  participants  who  hold
interests in the series B notes through  Euroclear or CEDEL,  on the other hand,
will be effected by Euroclear's  or CEDEL's  respective  Nominee  through DTC in
accordance with DTC's rules on behalf of Euroclear or CEDEL;  however,  delivery
of instructions  relating to crossmarket  transactions  must be made directly to
Euroclear or CEDEL,  as the case may be, by the  counterparty in accordance with
the rules and  procedures  of Euroclear  or CEDEL and within  their  established
deadlines  (Brussels  time  for  Euroclear  and UK  time  for  CEDEL).  indirect
participants who hold interests in the notes through Euroclear and CEDEL may not
deliver  instructions  directly to Euroclear's or CEDEL's Nominee.  Euroclear or
CEDEL  will,  if the  transaction  meets its  settlement  requirements,  deliver

<PAGE>


instructions  to its  respective  Nominee to deliver  or  receive  interests  on
Euroclear's  or CEDEL's  behalf in the relevant  Global Note in DTC, and make or
receive  payment  in  accordance  with  normal   procedures  for  same-day  fund
settlement applicable to DTC.

         Because  of  time  zone  differences,  the  securities  accounts  of an
indirect  participant  that  comes  to hold an  interest  in the  series B notes
through Euroclear or CEDEL purchasing an interest in a Global Note from a direct
participant  in DTC will be  credited,  and that  crediting  will be reported to
Euroclear or CEDEL during the European  business day  immediately  following the
settlement  date of DTC in New  York.  Although  recorded  in  DTC's  accounting
records as of DTC's  settlement date in New York,  Euroclear and CEDEL customers
will not have access to the cash amount  credited to their  accounts as a result
of a sale of an  interest  in a  Global  Note  to a DTC  Participant  until  the
European  business  day for  Euroclear  or  CEDEL  immediately  following  DTC's
settlement date.

         DTC has advised us that it will take any action  permitted  to be taken
by a  Holder  of  series B notes  only at the  direction  of one or more  direct
participants  to whose  account  interests  in the Global Notes are credited and
only in respect of the portion of the aggregate principal amount of the series B
notes to which the direct  participant or direct  participants has or have given
direction.  However,  if there is an Event of Default  under the series B notes,
DTC reserves the right to exchange Global Notes (without the direction of one or
more of its direct  participants)  for series B legended  notes in  certificated
form, and to distribute the  certificated  forms of series B notes to its direct
participants.  See  "--Transfers  of Interests in Global Notes for  Certificated
Notes."

         Although  DTC,  Euroclear  and  CEDEL  have  agreed  to  the  foregoing
procedures  to facilitate  transfers of interests in the Global Notes,  they are
under no obligation to perform or to continue to perform these  procedures,  and
these  procedures may be discontinued  at any time.  Neither we, the Guarantors,
the initial  purchasers  nor the trustee shall have any  responsibility  for the
performance by DTC,  Euroclear or CEDEL or their respective  direct and indirect
participants  of their  respective  obligations  under the rules and  procedures
governing any of their operations.

TRANSFERS OF INTERESTS IN GLOBAL NOTES FOR CERTIFICATED NOTES

         An entire Global Note may be exchanged for definitive series B notes in
registered,  certificated form without interest coupons  ("Certificated  Notes")
if:

                  (1)  DTC:

                           (a)  notifies us that it is  unwilling  or unable  to
                           continue as  depositary  for the Global  Notes and we
                           thereupon  fail to  appoint  a  successor  depositary
                           within 90 days, or

                           (b)  has  ceased to  be a  clearing agency registered
                           under the Exchange Act;

                  (2) we, at our option,  notify the trustee in writing that we
                  elect to cause the issuance of Certificated Notes; or

                  (3) there shall have  occurred and be continuing a Default  or
                  an Event of Default with respect to the series B notes. In any
                  case,  we will  notify  the  trustee  in  writing  that,  upon
                  surrender  by the direct and  indirect  participants  of their
                  interest in the Global Note, Certificated Notes will be issued
                  to each Person that the direct and indirect  participants  and
                  DTC  identify  as being the  beneficial  owner of the  related
                  series B notes.

         Beneficial  interests  in Global  Notes held by any direct or  indirect
participant may be exchanged for Certificated  Notes upon request to DTC, by the
direct participant (for itself or on behalf of an indirect participant),  to the
trustee  in  accordance  with  customary  DTC  procedures.   Certificated  notes
delivered  in exchange  for any  beneficial  interest in any Global Note will be
registered in the names, and issued in any approved denominations,  requested by
DTC on behalf of the direct or indirect  participants  (in accordance with DTC's
customary procedures).


<PAGE>


         Neither we, the Guarantors nor the trustee will be liable for any delay
by the Holder of any Global Note or DTC in identifying the beneficial  owners of
series B notes,  and we and the  trustee may  conclusively  rely on, and will be
protected in relying on,  instructions from the Holder of the Global Note or DTC
for all purposes.

SAME DAY SETTLEMENT AND PAYMENT

         The  indenture  will require  that  payments in respect of the series B
notes represented by the Global Notes,  including  principal,  premium,  if any,
interest and Liquidated Damages, if any, be made by wire transfer of immediately
available same day funds to the accounts specified by the Holder of interests in
the Global Note. With respect to  Certificated  Notes, we will make all payments
of principal,  premium, if any, interest and Liquidated Damages, if any, by wire
transfer of immediately  available  same day funds to the accounts  specified by
the Holders  thereof or, if no account is specified,  by mailing a check to each
of the Holder's  registered  address.  We expect that  secondary  trading in the
Certificated Notes will also be settled in immediately available funds.

REGISTRATION RIGHTS; LIQUIDATED DAMAGES

         The following  description  is a summary of the material  provisions of
the  registration  rights  agreement.  It does not restate that agreement in its
entirety. We urge you to read the proposed form of registration rights agreement
in its entirety because it, and not this description,  defines your registration
rights as Holders of these notes. See "--Additional Information."

         We,  the  Guarantors  and  the  initial  purchasers  entered  into  the
registration  rights  agreement upon the closing of the initial  offering of the
series  A notes.  Pursuant  to the  registration  rights  agreement,  we and the
Guarantors agreed to file with the SEC the Exchange Offer Registration Statement
on the  appropriate  form under the  Securities Act with respect to the series B
notes. Upon the effectiveness of the Exchange Offer Registration Statement,  the
Guarantors  and we will offer to the Holders of Transfer  Restricted  Securities
pursuant to the Exchange Offer who are able to make specific representations the
opportunity to exchange their Transfer Restricted Securities for series B notes.

         If:

                  (1) we  and the  Guarantors  are  not  required  to  file  the
                  Exchange  Offer  Registration   Statement,   or  permitted  to
                  consummate  the Exchange  Offer because the Exchange  Offer is
                  not permitted by applicable law or SEC policy; or

                  (2) any  Holder of Transfer Restricted  Securities notifies us
                  prior to the 20th  business  day  following  the  consummation
                  deadline for the Exchange Offer that:

                           (a)  it  is  prohibited  by  law  or  SEC policy from
                           participating in the Exchange Offer; or

                           (b) it may not resell the Exchange Notes acquired  by
                           it in  the  Exchange  Offer  to  the  public  without
                           delivering a prospectus and the prospectus  contained
                           in the Exchange Offer  Registration  Statement is not
                           appropriate or available for the resales; or

                          (c) it is a broker-dealer  and  owns  series  B  notes
                          acquired directly from any of our Affiliates or us,

we and the Guarantors will file with the SEC a Shelf  Registration  Statement to
cover  resales  of the  series  B  notes  by the  Holders  thereof  who  satisfy
conditions relating to the provision of information in connection with the Shelf
Registration Statement.

         The Guarantors and we will use all commercially  reasonable  efforts to
cause the applicable registration statement to be declared effective as promptly
as possible by the SEC.


<PAGE>



         For purposes of the preceding, "Transfer Restricted Securities" means:

                   (1) each series A note until:

                            (a) the  date on  which  the  series A note has been
                           exchanged in the  Exchange  Offer for a series B note
                           which is  entitled  to be resold to the public by the
                           Holder thereof without  complying with the prospectus
                           delivery requirements of the Securities Act;

                            (b) the  date on  which  the  series A note has been
                           disposed of in accordance  with a Shelf  Registration
                           Statement and the purchasers thereof have been issued
                           Exchange Notes;

                            (c)  the  date  on  which  the   series  A  note  is
                           distributed to the public  pursuant to Rule 144 under
                           the Securities Act; and

                  (2) each series B note held by a broker-dealer  until the date
                  on which the series B note is disposed  of by a  broker-dealer
                  to a purchaser who receives from the broker-dealer on or prior
                  to the date of sale a copy of the prospectus  contained in the
                  Exchange Offer Registration Statement.

         The registration rights agreement provides:

                   (1) we  and  the  Guarantors  will  file  an  Exchange  Offer
                  Registration  Statement  with  the SEC on or prior to 120 days
                  after the closing of the offering of the series A notes;

                   (2)  we  and  the  Guarantors   will  use  all   commercially
                  reasonable  efforts to have the  Exchange  Offer  Registration
                  Statement  declared  effective  by the  SEC  at  the  earliest
                  possible  time but in no event  later  than 210 days after the
                  closing of this offering;

                   (3) unless  the  Exchange  Offer  would not be  permitted  by
                  applicable law or SEC policy, we and the Guarantors will

                            (a)  use  all  commercially  reasonable  efforts  to
                           commence the Exchange  Offer and to keep the Exchange
                           Offer open for a period of not less than the  minimum
                           period  required under  applicable  federal and state
                           securities  laws  provided that in no event shall the
                           period be less than 20 business days; and

                            (b) use all commercially reasonable efforts to issue
                           on or  prior  to 30  business  days,  or  longer,  if
                           required by the federal  securities  laws,  after the
                           date  on  which  the  Exchange   Offer   Registration
                           Statement was declared effective by the SEC, series B
                           notes in  exchange  for all  series A notes  tendered
                           prior thereto in the Exchange Offer; and

                   (4) if obligated to file the Shelf Registration Statement, we
                  and the Guarantors will file the Shelf Registration  Statement
                  with  the  SEC  on  or  prior  to 30  days  after  the  filing
                  obligation arises and use all commercially  reasonable efforts
                  to cause the shelf  registration  to be declared  effective by
                  the SEC on or prior to 60 days after the obligation arises.

         If:

                   (1)  we  and  the   Guarantors   fail  to  file  any  of  the
                  registration  statements  required by the registration  rights
                  agreement on or before the date specified for the filing; or

                   (2) any  required  registration  statements  is not  declared
                  effective by the SEC on or prior to the date specified for its
                  effectiveness (the "Effectiveness Target Date"); or

                   (3) the  Guarantors  and we fail to  consummate  the Exchange
                  Offer within 30 business days of the Effectiveness Target Date
                  with respect to the Exchange Offer Registration Statement; or


<PAGE>


                   (4) the Shelf  Registration  Statement or the Exchange  Offer
                  Registration  Statement is declared  effective but  thereafter
                  ceases to be effective or usable in connection with resales of
                  Transfer Restricted Securities during the periods specified in
                  the  registration  rights agreement (each event referred to in
                  clauses (1) through (4) above, a "Registration Default"),

then the Guarantors and we will pay Liquidated  Damages to each Holder of series
A notes,  with  respect to the first 90-day  period  immediately  following  the
occurrence of the first Registration Default in an amount equal to $.05 per week
per $1,000 principal amount of series A notes held by the Holder.

         The amount of the  Liquidated  Damages will  increase by an  additional
$.05 per week per $1,000 principal amount of series A notes with respect to each
subsequent 90-day period until all Registration  Defaults have been cured, up to
a maximum amount of Liquidated Damages for all Registration Defaults of $.50 per
week per $1,000 principal amount of series A notes.

         All accrued  Liquidated Damages with respect to the Global Note will be
paid by us and the  Guarantors  on each Damages  Payment Date to the Global Note
Holder by wire transfer of immediately available funds or by federal funds check
and to Holders of Certificated  Notes by wire transfer to the accounts specified
by them or by mailing checks to their  registered  addresses if no accounts have
been specified.

         Following  the  cure  of all  Registration  Defaults,  the  accrual  of
Liquidated Damages will cease.

         Holders  of  series  A  notes  will  be  required   to  make   specific
representations  to us (as described in the  registration  rights  agreement) in
order to  participate  in the  Exchange  Offer and will be  required  to deliver
information to be used in connection with the Shelf  Registration  Statement and
to provide comments on the Shelf Registration  Statement within the time periods
set forth in the  registration  rights agreement in order to have their series A
notes  included  in the  Shelf  Registration  Statement  and  benefit  from  the
provisions  regarding  Liquidated Damages set forth above. By acquiring Transfer
Restricted  Securities,  a Holder will be deemed to have agreed to indemnify the
Guarantors and us against  losses  arising out of  information  furnished by the
Holder in writing for inclusion in any Shelf Registration Statement.  Holders of
series A notes  will also be  required  to suspend  their use of the  prospectus
included  in the Shelf  Registration  Statement  under some  circumstances  upon
receipt of written notice to that effect from us.

CERTAIN DEFINITIONS

         Set forth  below are some of the defined  terms used in the  indenture.
Reference is made to the indenture for a full disclosure of these terms, as well
as other terms used herein.

         "Acquired Debt" means, with respect to any specified Person:

                 (1)  Indebtedness  of any other Person existing at the time the
         other Person is merged with or into or became a  Restricted  Subsidiary
         of the specified Person, whether or not the Indebtedness is incurred in
         connection with, or in contemplation  of, the other Person merging with
         or into, or becoming a Restricted  Subsidiary of, the specified Person;
         and

                 (2)  Indebtedness  secured  by a  Lien  encumbering  any  asset
acquired by the specified Person.

         "Affiliate" of any specified  Person means any other Person directly or
indirectly  controlling  or  controlled  by or under  direct or indirect  common
control with the specified Person.  For purposes of this definition,  "control,"
as used with  respect to any  Person,  shall mean the  possession,  directly  or
indirectly,  of the power to direct or cause the direction of the  management or
policies of the Person,  whether through the ownership of voting securities,  by
agreement or otherwise; provided that beneficial ownership of 10% or more of the
Voting  Stock of a Person  shall be deemed to be control.  For  purposes of this
definition,  the terms "controlling,"  "controlled by" and "under common control
with" shall have  correlative  meanings.  No Person (other than us or any of our
Subsidiaries) in whom a Receivables Subsidiary makes an Investment in connection
with a Qualified Receivables Transaction will be deemed to be an Affiliate of us
or any of our Subsidiaries solely by reason of the Investment.


<PAGE>


         "Asset Sale" means:

                 (1) the sale,  lease,  conveyance or other disposition by us or
         any of our Restricted  Subsidiaries of any assets or rights (other than
         director's  qualifying shares);  provided that the sale,  conveyance or
         other  disposition of all or substantially  all of the assets of us and
         our  Restricted  Subsidiaries  taken as a whole will be governed by the
         provisions  of  the  indenture   described   above  under  the  caption
         "--Repurchase at the Option of  Holders--Change  of Control" and/or the
         provisions    described    above   under   the    caption    "--Certain
         Covenants--Merger,  Consolidation  or  Sale of  Assets"  and not by the
         provisions of the Asset Sale covenant; and

                 (2) the issuance of Equity  Interests by any of our  Restricted
         Subsidiaries or the sale of Equity Interests in any of our Subsidiaries
         (other than director's qualifying shares).

         Notwithstanding the preceding,  the following items shall not be deemed
to be Asset Sales:

                 (1) any single  transaction  or series of related  transactions
         that  involves  assets  having a fair  market  value of less  than $1.0
         million;

                 (2) a transfer of assets between or among us and our Restricted
         Subsidiaries;

                 (3) an issuance of Equity Interests by a Restricted  Subsidiary
         to us or to another Restricted Subsidiary;

                 (4)  the  sale  or  lease  of  equipment,  inventory,  accounts
         receivable or other assets in the ordinary course of business;

                 (5)  the sale or other disposition of cash or Cash Equivalents;

                 (6) a  Restricted  Payment  or  Permitted  Investment  that  is
         permitted by the covenant  described above under the caption "--Certain
         Covenants--Restricted Payments;"

                 (7) the  licensing  of  intellectual  property in the  ordinary
         course of business;

                 (8) sales of accounts receivable and related assets of the type
         specified in the definition of "Qualified Receivables Transaction" to a
         Receivables  Subsidiary  for the fair market value  thereof,  including
         cash in an amount at least  equal to 90% of the book  value  thereof as
         determined in accordance with GAAP, it being  understood  that, for the
         purposes  of this  clause  (8),  notes  received  in  exchange  for the
         transfer of accounts  receivable and related assets will be deemed cash
         if the Receivables  Subsidiary or other payor is required to repay said
         notes as soon as  practicable  from  available  cash  collections  less
         amounts required to be established as reserves  pursuant to contractual
         agreements  with entities that are not Affiliates of us entered into as
         part of a Qualified Receivables Transaction; and

                 (9) transfers of accounts  receivable and related assets of the
         type specified in the definition of "Qualified Receivables Transaction"
         (or  a  fractional   undivided   interest  therein)  by  a  Receivables
         Subsidiary in a Qualified Receivables Transaction.

         "Beneficial  Owner" has the meaning  assigned to the term in Rule 13d-3
and Rule 13d-5 under the Exchange Act, except that in calculating the beneficial
ownership of any particular  "person" (as that term is used in Section  13(d)(3)
of the Exchange Act), the "person" shall be deemed to have beneficial  ownership
of all  securities  that the "person" has the right to acquire by  conversion or
exercise of other securities,  whether the right is currently  exercisable or is
exercisable  only  upon  occurrence  of a  subsequent  condition  (other  than a
condition that the  noteholders  waive one or more provisions of the indenture).
The terms "Beneficially Owns" and "Beneficially  Owned" shall have corresponding
meanings.

<PAGE>



         "Board of Directors" means:

                 (1) with  respect to a  corporation,  the board of directors of
         the corporation;

                 (2) with  respect to a  partnership,  the Board of Directors of
         the general partner of the partnership; and

                 (3) with respect to any other Person, the board or committee of
         the Person serving a similar function.

         "Capital Lease Obligation" means, at the time any determination thereof
is to be made,  the amount of the  liability in respect of a capital  lease that
would  at that  time  be  required  to be  capitalized  on a  balance  sheet  in
accordance with GAAP.

         "Capital Stock" means:

                 (1)  in the case of a corporation, corporate stock;

                 (2) in the case of an association or business  entity,  any and
         all  shares,  interests,  participations,  rights or other  equivalents
         (however designated) of corporate stock;

                 (3) in the case of a partnership or limited liability  company,
         partnership or membership interests (whether general or limited); and

                 (4) any other  interest  or  participation  that  confers  on a
         Person  the right to receive a share of the  profits  and losses of, or
         distributions of assets of, the issuing Person.

         "Cash Equivalents" means:

                 (1)  United States dollars;

                 (2)  securities  issued or  directly  and fully  guaranteed  or
         insured   by  the   United   States   government   or  any   agency  or
         instrumentality thereof (provided that the full faith and credit of the
         United States is pledged in support  thereof) having  maturities of not
         more than one year from the date of acquisition;

                 (3)  certificates  of deposit and eurodollar time deposits with
         maturities of six months or less from the date of acquisition, bankers'
         acceptances with maturities not exceeding six months and overnight bank
         deposits,  in each case, with any lender party to the Credit  Agreement
         or with any  domestic  commercial  bank  having  capital and surplus in
         excess of $500.0  million  and a Thomson  Bank  Watch  Rating of "B" or
         better;

                 (4) marketable  direct  obligations  issued by any state of the
         United States of America or any political  subdivision  of any state or
         any public  instrumentality  thereof  maturing within one year from the
         date of acquisition thereof and, at the time of acquisition, having one
         of the two highest  ratings  obtainable  from either  Standard & Poor's
         Rating Services or Moody's Investors Service, Inc.;

                 (5)  certificates  of deposit or bankers'  acceptance (or, with
         respect to foreign banks, similar instruments) maturing within one year
         from the date of acquisition  thereof issued by a bank organized  under
         the laws of the United  States of  America or any state  thereof or the
         District  of  Columbia,  Japan or any member of the  European  Economic
         Community  or any U.S.  branch of a foreign  bank having at the date of
         acquisition  thereof  combined  capital  and  surplus  of not less than
         $500.0 million;

                 (6) repurchase  obligations  with a term of not more than seven
         days for underlying  securities of the types  described in clauses (2),
         (3) and (4) above entered into with any financial  institution  meeting
         the qualifications specified in clauses (3) or (4) above;

                 (7)  commercial  paper  having  a rating  of at least  P-1 from
         Moody's Investors  Service,  Inc. or at least A1 from Standard & Poor's
         Rating  Services  and in each case  maturing  within one year after the
         date of acquisition; and


<PAGE>


                 (8)  money  market  funds at least  95% of the  assets of which
         constitute  Cash  Equivalents  of the kinds  described  in clauses  (1)
         through (7) of this definition.

         "Consolidated  Cash Flow" means,  with respect to any specified  Person
for any period, the Consolidated Net Income of the Person for the period plus:

                 (1) an amount equal to any extraordinary loss plus any net loss
         realized  by  the  Person  or any of  its  Restricted  Subsidiaries  in
         connection  with an Asset Sale,  to the extent  losses were deducted in
         computing Consolidated Net Income; plus

                 (2)  provision  for taxes  based on income  or  profits  of the
         Person and its Restricted  Subsidiaries  for the period,  to the extent
         that  provision  for taxes was deducted in computing  Consolidated  Net
         Income; plus

                 (3)  consolidated  interest  expense  of  the  Person  and  its
         Restricted  Subsidiaries  for the period,  whether  paid or accrued and
         whether or not capitalized (including, without limitation, amortization
         of debt issuance costs and original issue discount,  non-cash  interest
         payments,  the interest component of any deferred payment  obligations,
         the interest  component of all payments  associated  with Capital Lease
         Obligations, commissions, discounts and other fees and charges incurred
         in respect of letter of credit or bankers' acceptance  financings,  and
         net of the effect of all payments made or received  pursuant to Hedging
         Agreements),  to the extent that any expense was  deducted in computing
         Consolidated Net Income; plus

                 (4)  depreciation,   amortization  (including  amortization  of
         goodwill and other  intangibles  but excluding  amortization of prepaid
         cash  expenses  that were paid in a prior  period)  and other  non-cash
         expenses  (excluding  any  non-cash  expense  to  the  extent  that  it
         represents  an accrual of or reserve  for cash  expenses  in any future
         period or  amortization  of a prepaid  cash  expense that was paid in a
         prior  period) of the Person and its  Restricted  Subsidiaries  for the
         period to the extent that depreciation, amortization and other non-cash
         expenses were deducted in computing Consolidated Net Income; minus

                 (5) non-cash items  increasing  Consolidated Net Income for the
         period, other than normal accruals in the ordinary course of business,

in each case, on a consolidated basis and determined in accordance with GAAP.

         "Consolidated  Net Income" means,  with respect to any specified Person
for any period, the aggregate of the Net Income of the Person and its Restricted
Subsidiaries for the period, on a consolidated  basis,  determined in accordance
with GAAP; provided that:

                 (1) the  Net  Income  of any  Person  that is not a  Restricted
         Subsidiary  of the  specified  Person or that is  accounted  for by the
         equity method of accounting  shall be included in the  Consolidated Net
         Income of the  specified  Person  only to the  extent of the  amount of
         dividends or  distributions  paid in cash to the specified  Person or a
         Restricted Subsidiary thereof;

                 (2)  the Net  Income  of any  Restricted  Subsidiary  shall  be
         excluded to the extent that the  declaration or payment of dividends or
         similar  distributions by that Restricted Subsidiary of that Net Income
         is not  at the  date  of  determination  permitted  without  any  prior
         governmental  approval  (that has not been  obtained)  or,  directly or
         indirectly,  by operation of the terms of its charter or any  agreement
         (other than an agreement with us or our Restricted  Subsidiaries  or an
         agreement  in effect on the date of the  indenture as in effect on that
         date),   instrument,   judgment,   decree,   order,  statute,  rule  or
         governmental regulation applicable to that Restricted Subsidiary or its
         stockholders;

                 (3) the Net  Income of any  Person  acquired  in a  pooling  of
         interests  transaction  for  any  period  prior  to  the  date  of  the
         acquisition shall be excluded;

                 (4) the cumulative effect of a change in accounting  principles
         shall be excluded;


<PAGE>


                 (5) gains and losses  from Asset Sales  (without  regard to the
         $1.0  million  limitation  set  forth  in the  definition  thereof)  or
         abandonments or reserves  relating  thereto and the related tax effects
         according to GAAP shall be excluded;

                 (6) gains and  losses due solely to  fluctuations  in  currency
         values and the related tax effect  according to GAAP shall be excluded;
         and

                 (7) one-time non-cash  compensation  charges arising from stock
         options or stock grant plans shall be excluded.

         "Continuing  Directors"  means,  as  of any date of  determination, any
member of our Board of Directors who:

                 (1) was a member of the Board of  Directors  on the date of the
         indenture; or

                 (2) was  nominated  for  election  or  elected  to the Board of
         Directors with the approval of a majority of the  Continuing  Directors
         who were members of the Board at the time of nomination or election.

         "Credit Agreement" means the Credit Agreement, dated as of November 12,
1999,  by and among us, the  various  financial  institutions  from time to time
parties  thereto,  DLJ  Capital  Funding,  Inc.,  as  syndication  agent for the
financial  institutions,  lead arranger and sole book running  manager,  Bank of
America,  N.A.,  as  administrative  agent for the  financial  institutions  and
Bankers Trust Company,  as documentation  agent for the financial  institutions,
including any related notes, guarantees,  collateral documents,  instruments and
agreements  executed  in  connection  therewith,  and in each  case as  amended,
modified, renewed, refunded, replaced or refinanced from time to time.

         "Credit  Facilities"  means, (a) the Credit Agreement and (b) following
written notice thereof by us to the trustee, other debt facilities or commercial
paper  facilities,  in each  case  with  banks  or other  institutional  lenders
providing for revolving credit loans,  term loans,  note issuances,  receivables
financing  (including  through the sale of  receivables to lenders or to special
purpose  entities formed to borrow from lenders against  receivables) or letters
of credit.  Without  limiting the generality of the foregoing,  the term "Credit
Facilities" shall include any amendment,  amendment and restatement,  supplement
or other modification to the Credit Agreement, all other debt facility documents
and ancillary documents and all renewals, extensions,  refundings,  replacements
and  refinancings  thereof,  including,  without  limitation,  any  agreement or
agreements (i) extending or shortening the maturity of any Indebtedness incurred
thereunder  or  contemplated  thereby,  (ii)  adding or  deleting  borrowers  or
guarantors  thereunder or (iii)  increasing the amount of Indebtedness  incurred
thereunder or available to be borrowed  thereunder to the extent permitted under
the indenture.

         "Default"  means any event that is, or with the  passage of time or the
giving of notice or both would be, an Event of Default.

         "Designated   Preferred   Stock"  means  preferred  stock  that  is  so
designated as Designated Preferred Stock,  pursuant to an officers'  certificate
executed by our principal  executive officer and principal financial officer, on
the issuance  date  thereof,  the cash  proceeds of which are excluded  from the
calculation  set forth in clause  (3)(b) of the first  paragraph of the covenant
described under the caption "--Restricted Payments."

         "Designated Senior Debt" means:

                 (1) any Indebtedness  outstanding  under the Credit  Agreement;
         and

                 (2) in the  event no  Indebtedness  is  outstanding  under  the
         Credit  Agreement,  any other Senior Debt permitted under the indenture
         the  principal  amount of which is $25.0  million  or more and that has
         been designated by us as "Designated Senior Debt."

         "Disqualified  Stock" means any Capital Stock that, by its terms (or by
the  terms of any  security  into  which it is  convertible,  or for which it is
exchangeable,  in each case at the  option of the holder  thereof),  or upon the
happening  of any event,  matures or is  mandatorily  redeemable,  pursuant to a
sinking fund obligation or otherwise,  or redeemable at the option of the holder
thereof,  in whole or in part, on or prior to the date that is 91 days after the
date on which the series B notes mature. Notwithstanding the preceding sentence,

<PAGE>


any Capital Stock that would  constitute  Disqualified  Stock solely because the
holders  thereof have the right to require us to  repurchase  the Capital  Stock
upon the occurrence of a change of control or an asset sale shall not constitute
Disqualified  Stock if the terms of the Capital  Stock  provide  that we may not
repurchase or redeem any Capital  Stock  pursuant to the  provisions  unless the
repurchase or redemption  complies with the covenant  described  above under the
caption "--Certain Covenants--Restricted Payments."

         "Domestic  Subsidiary"  means any Subsidiary  that was formed under the
laws of the United  States or any state  thereof or the  District of Columbia or
that  guarantees  or otherwise  provides  direct  credit  support for any of our
Indebtedness.

         "Equity  Interests"  means Capital  Stock and all warrants,  options or
other rights to acquire  Capital Stock (but  excluding any debt security that is
convertible into, or exchangeable for, Capital Stock).

         "Equity Offering" means any offering of our Qualified Capital Stock.

         "Existing  Indebtedness" means our Indebtedness and the Indebtedness of
our Restricted Subsidiaries (other than Indebtedness under the Credit Agreement)
in existence on the date of the indenture.

         "Fixed  Charges"  means,  with respect to any specified  Person for any
period, the sum, without duplication, of:

                 (1) the  consolidated  interest  expense  of the Person and its
         Restricted  Subsidiaries  for the  period,  whether  paid  or  accrued,
         including, without limitation,  amortization of debt issuance costs and
         original  issue  discount,  non-cash  interest  payments,  the interest
         component of any deferred payment  obligations,  the interest component
         of all payments associated with Capital Lease Obligations, commissions,
         discounts  and other fees and charges  incurred in respect of letter of
         credit or bankers' acceptance financings,  and net of the effect of all
         payments  made or received  pursuant to Hedging  Agreements  (excluding
         amortization of capitalized deferred financing fees in existence on the
         date of the indenture); plus

                 (2) the consolidated  interest of the Person and its Restricted
         Subsidiaries that was capitalized during the period; plus

                 (3) any interest expense on Indebtedness of another Person that
         is Guaranteed by the Person or one of its  Restricted  Subsidiaries  or
         secured  by a Lien on  assets of the  Person  or one of its  Restricted
         Subsidiaries, whether or not the Guarantee or Lien is called upon; plus

                 (4) the product of (a) all  dividends,  whether paid or accrued
         and  whether or not in cash,  on any series of  preferred  stock of the
         Person or any of its Restricted  Subsidiaries,  other than dividends on
         (i) Equity Interests payable solely in our Equity Interests (other than
         Disqualified  Stock), (ii) the series A convertible  preferred stock to
         the extent  dividends are paid in kind in accordance with the Preferred
         Stock  Agreement as in effect on the date of the  indenture or (iii) to
         us or a  Restricted  Subsidiary  of ours,  times  (b) a  fraction,  the
         numerator of which is one and the denominator of which is one minus the
         then current combined effective federal,  state and local statutory tax
         rate  of the  Person,  expressed  as a  decimal,  in  each  case,  on a
         consolidated basis and in accordance with GAAP.

         "Fixed  Charge  Coverage  Ratio"  means with  respect to any  specified
Person  and  its  Restricted  Subsidiaries  for any  period,  the  ratio  of the
Consolidated  Cash Flow of the Person and its  Restricted  Subsidiaries  for the
period to the Fixed Charges of the Person and its  Restricted  Subsidiaries  for
the  period.  In the event that the  specified  Person or any of its  Restricted
Subsidiaries incurs,  assumes,  Guarantees,  repays,  repurchases or redeems any
Indebtedness  (other  than  ordinary  working  capital  borrowings)  or  issues,
repurchases or redeems  preferred  stock  subsequent to the  commencement of the
period for which the Fixed Charge  Coverage Ratio is being  calculated and on or
prior to the date on which the event  for  which  the  calculation  of the Fixed
Charge Coverage Ratio is made (the  "Calculation  Date"),  then the Fixed Charge
Coverage  Ratio shall be calculated  giving pro forma effect to the  incurrence,
assumption,  Guarantee,  repayment, repurchase or redemption of Indebtedness, or
the issuance,  repurchase or redemption of preferred  stock,  and the use of the
proceeds  therefrom  as if  the  same  had  occurred  at  the  beginning  of the
applicable four-quarter reference period.


<PAGE>

         In addition,  for  purposes of  calculating  the Fixed Charge  Coverage
Ratio:

                 (1) acquisitions that have been made by the specified Person or
         any  of its  Restricted  Subsidiaries,  including  through  mergers  or
         consolidations and including any related financing transactions, during
         the four-quarter reference period or subsequent to the reference period
         and on or prior to the Calculation Date shall be given pro forma effect
         as if they had occurred on the first day of the four-quarter  reference
         period and  Consolidated  Cash Flow for the  reference  period shall be
         calculated on a pro forma basis (including Pro Forma Cost Savings), but
         without  giving  effect to clause (3) of the  proviso  set forth in the
         definition of Consolidated Net Income;

                 (2) the  Consolidated  Cash Flow  attributable  to discontinued
         operations,  as determined in accordance  with GAAP,  and operations or
         businesses  disposed  of  prior  to  the  Calculation  Date,  shall  be
         excluded;

                 (3) the Fixed Charges attributable to discontinued  operations,
         as  determined in accordance  with GAAP,  and  operations or businesses
         disposed of prior to the Calculation Date, shall be excluded,  but only
         to the extent that the  obligations  giving  rise to the Fixed  Charges
         will  not  be  obligations  of  the  specified  Person  or  any  of its
         Restricted Subsidiaries following the Calculation Date;

                 (4) notwithstanding  the foregoing,  the Consolidated Cash Flow
         for any period that  includes  the period from July 1, 1999 through and
         including  September 30, 1999, shall be determined by assuming that the
         Consolidated  Cash Flow  attributable to the BFI medical waste business
         for that  period was equal to one-half  of the  Consolidated  Cash Flow
         attributable  to that business for the six-month  period ended June 30,
         1999; and

                 (5) notwithstanding  the foregoing,  the Consolidated Cash Flow
         for any period that  includes  the period from  October 1, 1999 through
         and  including  the  date of the  indenture,  shall  be  determined  by
         assuming  that  the  Consolidated  Cash  Flow  attributable  to the BFI
         medical  waste  business for that period was equal to the  Consolidated
         Cash Flow  attributable to that business for the six-month period ended
         June 30, 1999 times a fraction the  numerator of which is the number of
         days in the period from October 1, 1999 through and  including the date
         of the indenture and the denominator of which is 181.

         "GAAP" means generally accepted accounting  principles set forth in the
opinions and  pronouncements of the Accounting  Principles Board of the American
Institute of Certified Public  Accountants and statements and  pronouncements of
the Financial  Accounting  Standards  Board or in other  statements by the other
entity  as  have  been  approved  by a  significant  segment  of the  accounting
profession, which are in effect on the date of the indenture.

         "Guarantee"  means a guarantee  other than by endorsement of negotiable
instruments  for  collection  in the  ordinary  course  of  business,  direct or
indirect,  in any manner including,  without  limitation,  by way of a pledge of
assets or  through  letters  of credit or  reimbursement  agreements  in respect
thereof, of all or any part of any Indebtedness.

         "Guarantors" means each of:

                 (1)  Stericycle of Arkansas,  Inc.,  Stericycle of  Washington,
         Inc., SWD Acquisition  Corp.,  Environmental  Control Co., Inc.,  Waste
         Systems,  Inc., Med-Tech  Environmental,  Inc., Med-Tech  Environmental
         (MA), Inc., Ionization Research Company, Inc., BFI Medical Waste, Inc.,
         Browning-Ferris Industries of Connecticut, Inc.; and

                 (2) any other  Domestic  Subsidiary  that executes a Subsidiary
         Guarantee in accordance with the provisions of the indenture;

and their respective successors and assigns.

         "Hedging  Agreement" means,  with respect to any specified Person,  any
interest rate protection agreement (including, without limitation, interest rate
swaps, caps, floors,  collars,  derivative  instruments and similar agreements),
and/or other types of interest  hedging  agreements and any currency  protection
agreement (including,  without limitation,  foreign exchange contracts, currency
swap agreements or other currency hedging arrangements) of the Person.


<PAGE>


         "Holder" means a Person in whose name a note is registered.

         "Indebtedness"  means,  with  respect  to  any  specified  Person,  any
indebtedness of the Person, whether or not contingent:

                 (1)  in respect of borrowed money;

                 (2)   evidenced  by  bonds,   notes,   debentures   or  similar
         instruments  or  letters  of credit  (or  reimbursement  agreements  in
         respect thereof);

                 (3)  in respect of banker's acceptances;

                 (4)  representing Capital Lease Obligations;

                 (5) in  respect  of the  balance  deferred  and  unpaid  of the
         purchase price of any property,  except any balance that constitutes an
         accrued expense or trade payable; or

                 (6)  representing  any net  payment  obligation  under  Hedging
         Agreements at the time of determination,

if and to the extent any of the  preceding  items  (other than letters of credit
and Hedging  Agreements) would appear as a liability upon a balance sheet of the
specified  Person  prepared  in  accordance  with GAAP.  In  addition,  the term
"Indebtedness"  includes  all  Indebtedness  of others  secured by a Lien on any
asset of the specified Person (whether or not the Indebtedness is assumed by the
specified  Person) and, to the extent not otherwise  included,  the Guarantee by
the specified Person of any Indebtedness of any other Person.

         The amount of any Indebtedness outstanding as of any date shall be:

                 (1) the accreted value thereof, in the case of any Indebtedness
         issued with original issue discount; and

                 (2) the principal  amount  thereof,  together with any interest
         thereon  that is more than 30 days  past due,  in the case of any other
         Indebtedness.

For  purposes  of  calculating  the  amount  of  Indebtedness  of a  Receivables
Subsidiary  outstanding  as of any  date,  the face or  notional  amount  of any
interest in receivables or equipment that is outstanding as of the date shall be
deemed to be Indebtedness  but any interests held by us or any of our Restricted
Subsidiaries shall be excluded for purposes of the calculation.

         "Investments" means, with respect to any Person, all direct or indirect
investments by the Person in other Persons  (including  Affiliates) in the forms
of loans  (including  Guarantees  or other  obligations),  advances  or  capital
contributions (excluding commission, travel and similar advances to officers and
employees  made  in  the  ordinary  course  of  business),  purchases  or  other
acquisitions  for  consideration  of  Indebtedness,  Equity  Interests  or other
securities,  together  with  all  items  that  are or  would  be  classified  as
investments on a balance sheet prepared in accordance with GAAP. If we or any of
our Restricted  Subsidiaries sells or otherwise disposes of any Equity Interests
of any of our  direct or in direct  Restricted  Subsidiaries  such  that,  after
giving effect to any sale or  disposition,  the Person is no longer a Restricted
Subsidiary of ours, we shall be deemed to have made an Investment on the date of
the sale or disposition  equal to the cost basis of the Equity  Interests of the
Restricted  Subsidiary  not  sold or  disposed  of in an  amount  determined  as
provided  in the final  paragraph  of the  covenant  described  above  under the
caption "--Certain Covenants--Restricted Payments." The acquisition by us or any
of our Restricted  Subsidiaries  of a Person that holds an Investment in a third
Person shall be deemed to be an Investment by us or the Restricted Subsidiary in
the third Person in an amount  equal to the fair market value of the  Investment
held by the  acquired  Person in the third  Person  in an amount  determined  as
provided  in the final  paragraph  of the  covenant  described  above  under the
caption "--Certain Covenants--Restricted Payments."

         "Lien" means,  with respect to any asset, any mortgage,  lien,  pledge,
charge,  security  interest or  encumbrance of any kind in respect of the asset,
whether or not filed,  recorded or otherwise  perfected  under  applicable  law,
including any conditional sale or other title retention agreement,  any lease in
the nature  thereof,  any option or other  agreement  to sell or give a security


<PAGE>


interest in and, except in connection with any Qualified Receivable Transaction,
any filing of or agreement  to give any  financing  statement  under the Uniform
Commercial Code (or equivalent statutes) of any jurisdiction.

         "Net Income"  means,  with  respect to any  specified  Person,  the net
income (loss) of the Person,  determined in accordance  with GAAP and before any
reduction in respect of  preferred  stock  dividends,  excluding,  however,  any
extraordinary  gain and loss,  together with any related  provision for taxes on
items of extraordinary gain and loss.

         "Net Proceeds" means the aggregate cash proceeds  received by us or any
of our Restricted Subsidiaries in respect of any Asset Sale (including,  without
limitation, any cash received upon the sale or other disposition of any non-cash
consideration  received in any Asset Sale),  net of the direct costs relating to
the Asset Sale, including, without limitation,  legal, accounting and investment
banking fees, and sales commissions,  and any relocation  expenses incurred as a
result thereof,  taxes paid or payable as a result thereof,  in each case, after
taking into account any available tax credits or deductions  and any tax sharing
arrangements,   and  amounts   required  to  be  applied  to  the  repayment  of
Indebtedness,  other than Senior Debt under a Credit Facility, secured by a Lien
on the asset or assets  that were the  subject of the Asset Sale and any reserve
for  adjustment in respect of the sale price of the asset or assets  established
in accordance with GAAP.

         "Non-Recourse Debt" means Indebtedness of an Unrestricted Subsidiary:

                 (1)  as  to  which  neither  we  nor  any  of  our   Restricted
         Subsidiaries  (a) provides  credit  support of any kind  (including any
         undertaking,    agreement   or   instrument   that   would   constitute
         Indebtedness),  (b) is directly or indirectly  liable as a guarantor or
         otherwise, or (c) constitutes the lender;

                 (2) no default with respect to which (including any rights that
         the holders  thereof  may have to take  enforcement  action  against an
         Unrestricted  Subsidiary)  would permit upon  notice,  lapse of time or
         both any  holder of any other  Indebtedness  (other  than the notes) of
         ours or any of our Restricted  Subsidiaries to declare a default on the
         other  Indebtedness  or cause the payment  thereof to be accelerated or
         payable prior to its stated maturity; and

                 (3) as to which the lenders have been  notified in writing that
         they will not have any  recourse to the stock or assets of us or any of
         our Restricted Subsidiaries.

         "Obligations"   means  any  principal,   interest,   penalties,   fees,
indemnifications,  reimbursements,  damages and other liabilities  payable under
the documentation governing any Indebtedness,  including, in each case, interest
accruing  subsequent  to the filing of, or which would have  accrued but for the
filing of, a petition  for  bankruptcy,  reorganization  or similar  proceeding,
whether or not the interest is an allowable claim in the proceeding.

         "Permitted  Business"  means  medical  waste  disposal and  consulting,
distribution of medical  services and products to medical waste  customers,  and
the expansion of related  services and distribution of products to medical waste
customers.

         "Permitted  Domestic  Subsidiary  Preferred  Stock" means any series of
Preferred Stock of a Domestic Subsidiary of ours that has a fixed dividend rate,
the liquidation  value of all series of which,  when combined with the aggregate
amount of Indebtedness of us and our Restricted  Subsidiaries  incurred pursuant
to clause  (14) of the  definition  of  Permitted  Debt,  does not exceed  $20.0
million.

         "Permitted Hedging Agreement" of any Person means any Hedging Agreement
entered into with one or more financial  institutions  in the ordinary course of
business (a) for the purpose of fixing or hedging  interest or foreign  currency
exchange  rate risk with respect to any floating  rate  Indebtedness  or foreign
currency based Indebtedness, respectively, that is permitted by the terms of the
indenture to be  outstanding;  provided that the notional  amount of any Hedging
Agreement does not exceed the amount of Indebtedness or other liability to which
the  Hedging  Agreement  relates;  or (b) for the  purpose  of fixing or hedging
currency  exchange  risk with  respect  to any  currency  exchanges  made in the
ordinary course of business and not for purposes of speculation.



<PAGE>


         "Permitted Investments" means:

                 (1)  any Investment in us or in our Restricted Subsidiaries;

                 (2)  any Investment in Cash Equivalents;

                 (3) any Investment by us or any of our Restricted  Subsidiaries
         in a Person, if as a result of the Investment:

                          (a)  the  Person  becomes  a  Restricted Subsidiary of
                 ours; or

                          (b) the Person is merged,  consolidated or amalgamated
                 with or into, or transfers or conveys  substantially all of its
                 assets to, or is liquidated into, us or a Restricted Subsidiary
                 of ours;

                 (4) any Investment  made as a result of the receipt of non-cash
         consideration  from an Asset  Sale  that was  made  pursuant  to and in
         compliance  with  the  covenant   described  above  under  the  caption
         "--Repurchase at the Option of Holders--Asset Sales;"

                 (5) any  acquisition  of  assets  solely  in  exchange  for the
         issuance of our Equity Interests (other than Disqualified Stock);

                 (6)  Hedging Agreements;

                 (7)   Investments   existing  on  the  date  of  the  indenture
         (including Indebtedness received in exchange therefor);

                 (8) loans and  advances to our  employees  and officers and the
         employees and officers of our Restricted  Subsidiaries  in the ordinary
         course of business;

                 (9)  accounts  receivable  created or acquired in the  ordinary
         course of business;

                 (10)  Investments in securities of trade creditors or customers
         received pursuant to any plan of reorganization or similar  arrangement
         upon the bankruptcy or insolvency of trade creditors or customers;

                 (11) Guarantees by us of Indebtedness otherwise permitted to be
         incurred by our Restricted  Subsidiaries  that are Guarantors under the
         indenture;

                 (12) the acquisition by a Receivables  Subsidiary in connection
         with a Qualified Receivables Transaction of Equity Interests of a trust
         or other Person established by the Receivables Subsidiary to effect the
         Qualified  Receivables  Transaction;  and any other Investment by us or
         our  Subsidiaries  in a Receivables  Subsidiary or any  Investment by a
         Receivables  Subsidiary  in  any  other  Person  in  connection  with a
         Qualified Receivables  Transaction provided,  that the other Investment
         is in the  form of a note or  other  instrument  that  the  Receivables
         Subsidiary or other Person is required to repay as soon as  practicable
         from available cash collections less amounts required to be established
         as reserves  pursuant to contractual  agreements with entities that are
         not our  Affiliates  entered  into as part of a  Qualified  Receivables
         Transaction;

                 (13) any Investment in a joint venture with one or more foreign
         partners  to  the  extent  that,  as a  result  of the  Investment,  we
         recognize gross profit from licensing of intellectual property or sales
         of  equipment  to that  joint  venture  over  the  twelve-month  period
         following  the  Investment  that is at least equal to the amount of the
         Investment; and

                 (14) other  Investments  in any Person having an aggregate fair
         market value (measured on the date each Investment was made and without
         giving effect to subsequent changes in value), when taken together with
         all other Investments made pursuant to this clause (14) that are at the
         time outstanding not to exceed $25.0 million.



<PAGE>


         "Permitted Junior Securities" means:

                 (1)  Equity Interests in us or any Guarantor; or

                 (2) debt  securities  that are  subordinated  to (a) all Senior
         Debt and (b) any debt securities  issued in exchange for Senior Debt to
         substantially  the same  extent as, or to a greater  extent  than,  the
         notes and the  Subsidiary  Guarantees are  subordinated  to Senior Debt
         under the indenture.

         "Permitted Liens" means:

                 (1)  Liens in favor of us or the Guarantors;

                 (2)  Liens on  property  of a Person  existing  at the time the
         Person is  merged  with or into or  consolidated  with us or any of our
         Subsidiaries;  provided  that the Liens were in existence  prior to the
         contemplation of the merger or  consolidation  and do not extend to any
         assets other than those of the Person merged into or consolidated  with
         us or the Subsidiary;

                 (3)  Liens on  property  existing  at the  time of  acquisition
         thereof by us or any of our Subsidiaries,  provided that the Liens were
         in existence prior to the contemplation of the acquisition;

                 (4) Liens to secure the  performance of statutory  obligations,
         surety or appeal bonds,  performance  bonds or other  obligations  of a
         like nature incurred in the ordinary course of business;

                 (5)  Liens  existing  on the  date  of the  indenture  and  any
         extensions, renewals and replacements thereof;

                 (6) Liens for taxes,  assessments  or  governmental  charges or
         claims that are not yet delinquent or that are being  contested in good
         faith by  appropriate  proceedings  promptly  instituted and diligently
         concluded,  provided that any reserve or other appropriate provision as
         shall be  required  in  conformity  with  GAAP  shall  have  been  made
         therefor;

                 (7) Liens on assets of  Unrestricted  Subsidiaries  that secure
         Non-Recourse Debt of Unrestricted Subsidiaries;

                 (8) Liens  incurred or deposits made in the ordinary  course of
         business  in  connection  with  worker's   compensation,   unemployment
         insurance  and  other  types of  social  security,  including  any Lien
         securing  letters of credit  issued in the ordinary  course of business
         consistent with past practice in connection therewith, or to secure the
         performance of tenders, statutory obligations, surety and appeal bonds,
         bids, leases,  government  contracts,  performance and  return-of-money
         bonds and other similar  obligations  (exclusive of obligations for the
         payment of borrowed money);

                 (9)  judgment Liens not giving rise to an Event of Default;

                 (10) easements,  rights-of-way,  zoning  restrictions and other
         similar  charges  or  encumbrances  in  respect  of real  property  not
         interfering  in any material  respect with the ordinary  conduct of the
         business of us or any of our Restricted Subsidiaries;

                 (11) any  interest or title of a lessor  under any  Capitalized
         Lease Obligation;

                 (12) purchase  money Liens to finance  property or assets of us
         or any of our Restricted  Subsidiaries  acquired in the ordinary course
         of business; provided, however, that

                          (A) the related purchase money  Indebtedness shall not
                 exceed  the cost of the  property  or  assets  and shall not be
                 secured  by  any  property  or  assets  of us  or  any  of  our
                 Restricted  Subsidiaries  other than the property and assets so
                 acquired and


<PAGE>


                          (B)  the  Lien  securing  the  Indebtedness  shall  be
                 created within 90 days of the acquisition;

                 (13) Liens upon specific  items of inventory or other goods and
         proceeds of any Person securing the Person's  obligations in respect of
         banker's acceptances issued or created for the account of the Person to
         facilitate the purchase, shipment, or storage of the inventory or other
         goods;

                 (14) Liens securing  reimbursement  obligations with respect to
         commercial  letters  of  credit  which  encumber  documents  and  other
         property  relating to the letters of credit and  products  and proceeds
         thereof;

                 (15)  Liens  encumbering  deposits  made to secure  obligations
         arising   from   statutory,   regulatory,   contractual,   or  warranty
         requirements  of us or any of our  Restricted  Subsidiaries,  including
         rights of offset and set-off;

                 (16) Liens securing Indebtedness incurred in reliance on clause
         (4) of the second  paragraph of the covenant  described above under the
         caption "--Certain  Covenants--Incurrence  of Indebtedness and Issuance
         of Preferred Stock" so long as the Lien extends to no assets other than
         the assets acquired;

                 (17) Liens on assets of us or a Receivables Subsidiary incurred
         in connection with a Qualified Receivables Transaction;

                 (18)  Leases  or  subleases  granted  to  others  that  do  not
         materially interfere with the ordinary course of business of us and our
         Restricted Subsidiaries;

                 (19)  Liens  arising  from  filing  Uniform   Commercial   Code
         financing statements regarding leases;

                 (20)  Liens  securing  the  series A and series B notes and the
         related guarantees;

                 (21)  Liens  securing  intercompany  Indebtedness  of  us  or a
         Restricted Subsidiary on assets of any of our Subsidiaries;

                 (22) Liens  securing  Senior  Debt and other  Obligations  with
         respect thereto;

                 (23)  Liens  securing   Hedging   Agreements  which  relate  to
         Indebtedness that is otherwise permitted under the indenture; and

                 (24) Liens incurred in the ordinary course of business of us or
         any of our Restricted  Subsidiaries with respect to obligations that do
         not exceed $5.0 million at any one time outstanding.

         "Permitted  Refinancing  Indebtedness"  means any Indebtedness of us or
any of our Restricted  Subsidiaries  issued in exchange for, or the net proceeds
of which are used to extend, refinance,  renew, replace, defease or refund other
Indebtedness  of  us  or  any  of  our  Restricted   Subsidiaries   (other  than
intercompany Indebtedness); provided that:

                 (1) the principal  amount (or accreted value, if applicable) of
         the Permitted  Refinancing  Indebtedness  does not exceed the principal
         amount (or  accreted  value,  if  applicable)  of the  Indebtedness  so
         extended, refinanced, renewed, replaced, defeased or refunded (plus all
         accrued  interest  thereon  and the  amount of all fees,  expenses  and
         premiums incurred in connection therewith);

                 (2) if the Indebtedness  being extended,  refinanced,  renewed,
         replaced,  defeased or refunded is  subordinated in right of payment to
         the  series  B  notes,  the  Permitted   Refinancing   Indebtedness  is
         subordinated  in right of  payment  to,  the series B notes on terms at
         least as favorable to the Holders of series B notes as those  contained
         in  the  documentation   governing  the  Indebtedness  being  extended,
         refinanced, renewed, replaced, defeased or refunded;

                 (3)  the  Permitted  Refinancing  Indebtedness  has a  Weighted
         Average  Life to  Maturity  later  than the  Weighted  Average  Life to
         Maturity  of the  Indebtedness  being  extended,  refinanced,  renewed,
         replaced, defeased or refunded; and


<PAGE>


                 (4)  the  Indebtedness  is  incurred  either  by us  or by  the
         Restricted  Subsidiary  who is the  obligor on the  Indebtedness  being
         extended, refinanced, renewed, replaced, defeased or refunded.

         "Person" means any individual, corporation, partnership, joint venture,
association,  joint-stock company, trust, unincorporated  organization,  limited
liability company or government or other entity.

         "Preferred  Stock  Agreement"  means the  agreement  by and among  Bain
Capital,  Inc., Madison Dearborn Partners,  Inc. and us relating to the purchase
and sale of our series A convertible  preferred  stock, as in effect on the date
hereof.

         "Principals" means Bain  Capital,  Inc. and  Madison Dearborn Partners,
Inc.

         "Pro  Forma Cost  Savings"  means,  with  respect  to any  period,  the
reduction in costs that occurred during the four-quarter period or after the end
of the four-quarter period and on or prior to the transaction date that were (i)
directly  attributable to an asset acquisition and calculated on a basis that is
consistent  with Article 11 of  Regulation  S-X under the  Securities  Act as in
effect on the date of the indenture or (ii) implemented by the business that was
the subject of the asset acquisition  within six months of the date of the asset
acquisition  and  that  are  supportable  and  quantifiable  by  the  underlying
accounting records of the business, as if, in the case of each of clause (i) and
(ii),  all the  reductions in costs had been effected as of the beginning of the
period. In addition, for purposes of calculating the Fixed Charge Coverage Ratio
for any  four-quarter  period  that  includes a period  prior to the date of the
indenture,  we shall also give effect to the supplemental  adjustments described
in the Offering Memorandum, dated as of November 4, 1999.

         "Qualified   Capital  Stock"  means  any  Capital  Stock  that  is  not
Disqualified Stock.

         "Qualified Receivables  Transaction" means any transaction or series of
transactions entered into by us or any of our Subsidiaries  pursuant to which we
or  any  of  our  Subsidiaries  sell,  convey  or  otherwise  transfer  to (i) a
Receivables  Subsidiary  (in  the  case  of a  transfer  by us  or  any  of  our
Subsidiaries)  and  (ii)  any  other  Person  (in the  case of a  transfer  by a
Receivables  Subsidiary),   or  grant  a  security  interest  in,  any  accounts
receivable  (whether  now existing or arising in the future) of us or any of our
Subsidiaries,  and any assets related thereto including, without limitation, all
collateral securing the accounts receivable, all contracts and all guarantees or
other  obligations  in  respect  of the  accounts  receivable,  proceeds  of the
accounts  receivable  and other assets which are  customarily  transferred or in
respect of which security  interests are customarily  granted in connection with
asset securitization transactions involving accounts receivable.

         "Receivables Subsidiary" means a Subsidiary of ours which engages in no
activities  other than in connection  with the financing of accounts  receivable
and which is  designated  by our Board of  Directors  (as  provided  below) as a
Receivables  Subsidiary  (a)  no  portion  of  the  Indebtedness  or  any  other
Obligations (contingent or otherwise) of which (i) is guaranteed by us or any of
our Subsidiaries  (excluding guarantees of Obligations (other than the principal
of, and  interest on,  Indebtedness)  pursuant to  representations,  warranties,
covenants  and  indemnities  entered into in the ordinary  course of business in
connection  with a Qualified  Receivables  Transaction),  (ii) is recourse to or
obligates  us or any of our  Subsidiaries  in any way  other  than  pursuant  to
representations,  warranties,  covenants  and  indemnities  entered  into in the
ordinary  course  of  business  in  connection  with  a  Qualified   Receivables
Transaction  or  (iii)  subjects  any  property  or  asset  of us or  any of our
Subsidiaries  (other than accounts  receivable and related assets as provided in
the definition of "Qualified Receivables Transaction"),  directly or indirectly,
contingently or otherwise,  to the satisfaction thereof,  other than pursuant to
representations,  warranties,  covenants  and  indemnities  entered  into in the
ordinary  course  of  business  in  connection  with  a  Qualified   Receivables
Transaction,  (b) with  which  neither  we nor any of our  Subsidiaries  has any
material contract,  agreement,  arrangement or understanding other than on terms
no less favorable to us or the  Subsidiary  than those that might be obtained at
the time from Persons who are not our Affiliates, other than fees payable in the
ordinary course of business in connection with servicing accounts receivable and
(c) with which  neither we nor any of our  Subsidiaries  has any  obligation  to
maintain  or  preserve  the  Subsidiary's   financial  condition  or  cause  the
Subsidiary to achieve specific levels of operating  results.  Any designation by
our Board of  Directors  will be  evidenced  to the  Trustee by filing  with the
Trustee a certified  copy of the  resolution  of our Board of  Directors  giving
effect to the  designation  and an  officers'  certificate  certifying  that the
designation complied with the foregoing conditions.


<PAGE>


         "Related Party" means:

                 (1)  any   controlling   stockholder,   more   than  50%  owned
         Subsidiary,  or immediate  family member (in the case of an individual)
         of any Principal; or

                 (2) any trust,  corporation,  partnership or other entity,  the
         beneficiaries,  stockholders,  partners, owners or Persons beneficially
         holding  a  greater  than  50% or more  controlling  interest  of which
         consist of any one or more Principals and/or the other Persons referred
         to in the immediately preceding clause (1).

         "Restricted  Investment"  means an  Investment  other than a  Permitted
Investment.

         "Restricted  Subsidiary"  of a  Person  means  any  Subsidiary  of  the
referent Person that is not an Unrestricted Subsidiary.

         "Senior Debt" means:

                 (1) all Indebtedness of us or any Guarantor  outstanding  under
         Credit  Facilities and all Hedging  Agreements  permitted to be entered
         into under the terms of the indenture;

                 (2) any other Indebtedness of us or any Guarantor  permitted to
         be incurred  under the terms of the  indenture,  unless the  instrument
         under which the Indebtedness is incurred  expressly provides that it is
         on a parity  with or  subordinated  in right of payment to the notes or
         any Subsidiary Guarantee; and

                 (3) all  Obligations  with  respect to the items  listed in the
         preceding clauses (1) and (2).

         Notwithstanding anything to the contrary in the preceding,  Senior Debt
will not include:

                 (1) any liability for federal, state, local or other taxes owed
         or owing by us;

                 (2) any  Indebtedness of us to any of our Subsidiaries or other
         Affiliates;

                 (3)  any trade payables; or

                 (4)  the  portion  of any  Indebtedness  that  is  incurred  in
         violation of the indenture  except to the extent that the  Indebtedness
         so  incurred  was  extended  by the  lenders  thereof in  reliance on a
         certificate  executed and delivered by our president,  chief  executive
         officer or chief financial or accounting officer, in which certificate,
         the officer  certified  that the  incurrence  of the  Indebtedness  was
         permitted under the proviso to the first sentence under the caption "--
         Certain Covenants--Incurrence of Indebtedness and Issuance of Preferred
         Stock."

         "Significant   Subsidiary"   means  any  Subsidiary  that  would  be  a
"significant  Subsidiary" as defined in Article 1, Rule 1-02 of Regulation  S-X,
promulgated  pursuant to the  Securities  Act, as the regulation is in effect on
the date hereof  (excluding in all cases,  3CI Complete  Compliance  Corporation
while it is a public non-wholly-owned subsidiary of us).

         "Stated Maturity" means, with respect to any installment of interest or
principal  on any  series  of  Indebtedness,  the date on which the  payment  of
interest or principal  was  scheduled  to be paid in the original  documentation
governing the Indebtedness,  and shall not include any contingent obligations to
repay,  redeem  or  repurchase  any  interest  or  principal  prior  to the date
originally scheduled for the payment thereof.

         "Subordinated  Note Obligations"  means all Obligations with respect to
the notes, including, without limitation,  principal,  premium, if any, interest
and  Liquidated  Damages,  if any,  payable  pursuant  to the terms of the notes
(including,  without  limitation,  upon  acceleration  or  redemption  thereof),
together  with and  including,  without  limitation,  any  amounts  received  or
receivable  upon the exercise of rights of rescission or other rights of action,
including, without limitation, claims for damages, or otherwise.



<PAGE>


         "Subsidiary"  means,  with respect to any  specified  Person (and if no
Person is specified, it shall be understood to mean with respect to us):

                 (1) any  corporation,  association or other business  entity of
         which  more than 50% of the  total  voting  power of shares of  Capital
         Stock entitled (without regard to the occurrence of any contingency) to
         vote in the election of directors,  managers or trustees  thereof is at
         the time owned or controlled,  directly or indirectly, by the Person or
         one or more of the other  Subsidiaries of that Person (or a combination
         thereof); and

                 (2)  any  partnership  (a)  the  sole  general  partner  or the
         managing  general partner of which is the Person or a Subsidiary of the
         Person or (b) the only general  partners of which are the Person or one
         or more Subsidiaries of the Person (or any combination thereof).

                 "Unrestricted  Subsidiary" means any Subsidiary of ours that is
designated by our Board of Directors as an Unrestricted Subsidiary pursuant to a
Board resolution and in accordance with the terms of the indenture,  but only to
the extent that the Subsidiary:

                 (1)  has no indebtedness other than Non-Recourse Debt;

                 (2) is not party to any  agreement,  contract,  arrangement  or
         understanding with us or any of our Restricted  Subsidiaries unless the
         terms of the agreement,  contract,  arrangement or understanding are no
         less favorable to us or the Restricted Subsidiary than those that might
         be obtained at the time from Persons who are not our Affiliates;

                 (3) is a Person with respect to which neither we nor any of our
         Restricted  Subsidiaries  has any direct or indirect  obligation (a) to
         subscribe  for  additional  Equity  Interests  or  (b) to  maintain  or
         preserve  the  Person's  financial  condition or to cause the Person to
         achieve any specified levels of operating results; and


                 (4) has not  guaranteed  or  otherwise  directly or  indirectly
         provided  credit  support  for  any  Indebtedness  of us or  any of our
         Restricted Subsidiaries.

         Any  designation  of a Subsidiary of us as an  Unrestricted  Subsidiary
shall be evidenced to the trustee by filing with the trustee a certified copy of
the  Board  resolution  giving  effect  to  the  designation  and  an  Officers'
Certificate   certifying  that  the  designation  complied  with  the  preceding
conditions and was permitted by the covenant  described  above under the caption
"--Certain  Covenants--Restricted  Payments." If, at any time, any  Unrestricted
Subsidiary  would fail to meet the  preceding  requirements  as an  Unrestricted
Subsidiary,  it shall  thereafter  cease to be an  Unrestricted  Subsidiary  for
purposes of the indenture and any Indebtedness of the Subsidiary shall be deemed
to be  incurred  by a  Restricted  Subsidiary  of us as of the date and,  if the
Indebtedness  is not  permitted to be incurred as of the date under the covenant
described under the caption "--Certain Covenants--Incurrence of Indebtedness and
Issuance of Preferred Stock," we shall be in default of the covenant.  Our Board
of Directors  may at any time  designate  any  Unrestricted  Subsidiary  to be a
Restricted  Subsidiary;  provided that the designation  shall be deemed to be an
incurrence of Indebtedness  by a Restricted  Subsidiary of us of any outstanding
Indebtedness of the  Unrestricted  Subsidiary and the designation  shall only be
permitted  if (1) the  Indebtedness  is permitted  under the covenant  described
under the caption "--Certain  Covenants--Incurrence of Indebtedness and Issuance
of Preferred  Stock,"  calculated on a pro forma basis as if the designation had
occurred at the beginning of the four-quarter  reference period;  (2) no Default
or Event of Default would be in existence following the designation;  and (3) if
any  Subsidiary  is a  Domestic  Subsidiary,  it shall  execute  a  supplemental
indenture to become a Guarantor with respect to the notes.

         "Voting  Stock" of any Person as of any date means the Capital Stock of
the Person that is at the time  entitled to vote in the election of the Board of
Directors of the Person.

         "Weighted  Average  Life  to  Maturity"  means,  when  applied  to  any
Indebtedness at any date, the number of years obtained by dividing:


<PAGE>


                 (1) the sum of the  products  obtained by  multiplying  (a) the
         amount  of  each  then  remaining  installment,  sinking  fund,  serial
         maturity or other required payments of principal,  including payment at
         final  maturity,  in  respect  thereof,  by (b)  the  number  of  years
         (calculated  to the nearest  one-twelfth)  that will elapse between the
         date and the making of the payment; by

                 (2) the then outstanding principal amount of the Indebtedness.




<PAGE>


                          DESCRIPTION OF CAPITAL STOCK

         Our authorized  capital stock  consists of 30,000,000  shares of common
stock,  par value $0.01 per share,  of which  14,730,889  shares were issued and
outstanding  as of December 13, 1999, and 1,000,000  shares of preferred  stock,
par value  $0.01 per share,  of which  75,000  shares of 3.375%  payment-in-kind
series A convertible preferred stock are issued and outstanding.

COMMON STOCK

         Our outstanding  shares of common stock are validly issued,  fully paid
and nonassessable.  Common  stockholders are entitled to one vote for each share
held of record on all matters  submitted  to a vote of the  stockholders.  As of
December  13,  1999,  shares  of  our  common  stock  were  held  of  record  by
approximately 279 stockholders.

         Holders of shares of common stock do not have any preemptive  rights or
rights to subscribe for any additional  securities.  Our common stock is neither
redeemable nor convertible into other securities,  and there are no sinking fund
provisions.  Subject to the preferences  applicable to any shares of convertible
preferred stock  outstanding at the time,  common  stockholders  are entitled to
dividends if, when and as declared by the Board of Directors  from funds legally
available  therefore and are  entitled,  in the event of  liquidation,  to share
ratably in all assets  remaining  after payment of liabilities  and  convertible
preferred stock preferences, if any.

UNDESIGNATED PREFERRED STOCK

         We have authorized 1,000,000 shares of preferred stock, $.01 par value.
Our Board of Directors has designated  100,000 shares of this preferred stock as
Series A convertible  preferred  stock (see  description  below).  The remaining
900,000  shares of preferred  stock may be issued in series from time to time by
our Board of  Directors,  who would have the power to determine  the  respective
powers,  designations,  preferences,  rights,  qualifications,  limitations  and
restrictions of each series.  These matters would include,  for example: (1) the
number of shares in each series,  (2) whether a series will bear  dividends and,
if so, whether the dividends  will be cumulative,  (3) the dividend rate and the
dates of dividend payments, (4) liquidation  preferences,  if any, (5) the terms
of  redemption,  if any,  including  timing,  rates and prices,  (6)  conversion
rights, if any, (7) sinking fund  requirements,  if any, (8) any restrictions on
the issuance of additional shares of any series,  (9) any voting rights and (10)
any other powers, designations, preferences, rights, qualifications, limitations
or restrictions.

         Shares of  preferred  stock could have  priority  over shares of common
stock with respect to dividends  (which may be made  cumulative  with respect to
the preferred stock) and with respect to our assets upon liquidation,  and could
reduce the amount of assets  available for distribution to the holders of common
stock upon a liquidation.  Depending upon the particular  terms of any series of
preferred stock,  holders of that series may have significant  voting rights and
the right to representation on our Board of Directors. In addition, the approval
of holders of shares of preferred stock,  voting as a class or as a series,  may
be required for the taking of specific corporate actions, such as mergers.

CONVERTIBLE PREFERRED STOCK

         On  November  12,  1999,  we  issued  and  sold  75,000  shares  of our
convertible preferred stock to investment funds associated with Bain Capital and
with  Madison  Dearborn,  as initial  investors,  for  $1,000  per share,  or an
aggregate of $75.0 million, in cash, less various fees and expenses.

DIVIDENDS

         The convertible preferred stock bears preferential  dividends,  payable
in additional  shares of convertible  preferred stock, at the rate of 3.375% per
annum from the date of issuance. Dividends accrue daily at the per annum rate of
3.375% and will accumulate annually on the anniversary date of initial issuance.
In addition to preferential dividends, the convertible preferred stock will also
be entitled to share pro rata with holders of common stock,  on the basis of the
number of shares of common stock into which the  convertible  preferred stock is


<PAGE>



convertible,  in all other dividends and distributions.  Because the convertible
preferred  stock  dividends  are  payable in  additional  shares of  convertible
preferred stock,  the certificate of designations  covers 100,000 share in order
that we will have  shares  available  for the payment of those  dividends  for a
period of time.

LIQUIDATION

         Upon any  liquidation,  dissolution or winding up of us, each holder of
convertible   preferred  stock  shall  be  entitled  to  be  paid,   before  any
distribution  or payment is made to the holders of common  stock,  a liquidation
value  of the  greater  of (i) the sum of  $1,000  per  share  plus  accumulated
preferential dividends plus accrued and unpaid dividends not yet accumulated and
(ii) the amount  that would be payable if the  convertible  preferred  stock had
been converted into common stock.

VOTING; ELECTION OF DIRECTORS

         The convertible preferred stock is entitled to vote with the holders of
common  stock as a single class on each matter  submitted  to our  stockholders.
Each share of convertible  preferred  stock shall have a number of votes for the
matters submitted to our stockholders  equal to the number of votes possessed by
the common stock into which the convertible  preferred stock is convertible.  So
long as the  initial  investors  hold 50% or more of the  convertible  preferred
stock or the  common  stock  into  which it is  convertible,  they will have the
right,  voting  as a  separate  class,  to elect two  directors  to our Board of
Directors. In the event that the initial investors and their affiliates cease to
hold 50% but  still  hold 25% or more,  they will  have the  right,  voting as a
separate class, to elect one director and if they cease to hold 25%, their right
to elect directors as a separate class will terminate.

CONVERSION

         Each holder of  convertible  preferred  stock may, at any time and from
time  to  time,  upon  ten  business  days  notice,  convert  all or part of the
convertible  preferred stock into shares of common stock. The price at which the
holders may convert is $17.50 per share, subject to adjustment,  and this price,
as adjusted  from time to time,  is referred to as the  "conversion  price." The
conversion price will be adjusted under specified circumstances.

         The 75,000 shares of  convertible  preferred  stock held by the initial
investors  is  convertible  into  4,285,714  shares  of  our  common  stock,  or
approximately 22.6% of the amount of our common stock currently outstanding.

REDEMPTION AT OUR OPTION

         Beginning on the 30th month anniversary of the date of initial issuance
of the  convertible  preferred  stock,  if the closing price of the common stock
exceeds 150% of the  conversion  price for 20  consecutive  trading days, we may
elect, upon at least 30 days' prior written notice, to redeem all (but not part)
of the  outstanding  shares  of  convertible  preferred  stock,  subject  to any
holder's  right to first  convert  its shares  into  common  stock  prior to the
redemption  date, in the manner  described  above.  If we make an election,  the
redemption price will equal the liquidation value to the date of redemption.

REDEMPTION UPON A CHANGE OF CONTROL

         A "change of control"  with respect to us is defined as a  circumstance
in  which:  (i) any  person or group  (as the  terms  are used for  purposes  of
Sections  13(d) and 14(d) of the  Securities  Exchange Act of 1934,  as amended)
becomes the beneficial owner of more than 50% of our total voting power; or (ii)
during any consecutive  36-month  period,  our directors at the beginning of the
period  and  their  successors  cease to  comprise  a  majority  of our Board of
Directors.

         In the  event of a change  of  control,  or if a  bankruptcy  event (as
defined in the certificate of designation  governing the  convertible  preferred
stock)  has  occurred  and  continued  for 60 days,  each  holder  of  shares of
convertible preferred stock can, by the giving of 15 business days notice, cause
us to redeem all or any part of the  holder's  shares at a price per share equal
to the liquidation value per share.


<PAGE>


CORPORATE GOVERNANCE AGREEMENT

         A corporate  governance  agreement between us and the initial investors
contains specific  provisions to implement the right of the initial investors to
elect two directors to our Board of Directors and under  specific  circumstances
to appoint an observer.  The corporate  governance  agreement also provides that
until the  earlier  of (i) the date on which  the  initial  investors  and their
permitted  transferees (as defined in the corporate governance  agreement) cease
to own any  convertible  preferred  stock,  (ii) the date on which  the  initial
investors have completed a distribution  of the  convertible  preferred stock to
their  partners  or (iii) the first  anniversary  of the  closing,  the  initial
investors  and their  transferees  and  affiliates  will not acquire  beneficial
ownership  of more than 30% of the  voting  power of our  company  or acquire or
attempt to acquire control of our company, except in response to a proposal that
has been made to our stockholders that would materially and adversely affect the
initial  investors,  or pursuant to the exercise of their preemptive rights. The
corporate governance agreement also contains restrictions,  for a period of five
years, on an initial  investor's  ability to transfer the convertible  preferred
stock and further provides that the approval of the holders of a majority of the
convertible  preferred stock and underlying  common stock be obtained for us to:
(1) engage in mergers,  acquisitions  or divestitures  of specified  sizes,  (2)
enter into  contracts  with our officers,  directors,  employees or  affiliates,
except for  ordinary  employment  and benefit  plans and  transactions  with our
subsidiaries, and (3) incur indebtedness or issue capital stock that would cause
our fixed charge  coverage  ratio (as defined in the  preferred  stock  purchase
agreement) to be less than 1.75 to 1.0 (2.0 to 1.0 after the second  anniversary
of the initial issuance of the convertible preferred stock).


<PAGE>


                        FEDERAL INCOME TAX CONSIDERATIONS

         The  following  discussion  is a summary of the material  U.S.  federal
income tax  consequences  associated with the exchange of the series A notes for
series B notes and the  ownership  and  disposition  of the series B notes by an
original  purchaser  of the  series  B  notes  who is  not a  U.S.  holder.  The
discussion  below is based upon current  provisions of the Internal Revenue Code
of 1986,  as  amended,  applicable  U.S.  Department  of  Treasury  regulations,
judicial authority and administrative  rulings and practice, any of which may be
altered with  retroactive  effect thereby  changing the federal tax consequences
discussed below.

         The tax treatment of a holder of the notes may vary  depending upon the
holder's  particular  situation.  Some holders  (including,  but not limited to,
financial   institutions,   insurance   companies,   tax-exempt   organizations,
broker-dealers and persons holding the notes as part of a "straddle," "hedge" or
"conversion  transaction")  may be subject to special rules not discussed below.
This  discussion  is limited  to holders  who  purchased  the notes on  original
issuance and who hold the notes as "capital  assets"  (generally,  property held
for investment) within the meaning of section 1221 of the U.S. tax code. We will
not seek a ruling  from the IRS with  respect  to any of the  matters  discussed
herein and there can be no assurance that the IRS will not challenge one or more
of the tax consequences described below.

         THIS SUMMARY DOES NOT PURPORT TO DEAL WITH ALL ASPECTS OF U.S.  FEDERAL
INCOME TAXATION THAT MAY BE RELEVANT TO A HOLDER'S DECISION TO EXCHANGE SERIES A
NOTES FOR  SERIES B NOTES OR TO  PURCHASE  THE  NOTES.  PERSONS  CONSIDERING  AN
EXCHANGE OF SERIES A NOTES FOR SERIES B NOTES OR A PURCHASE OF THE NOTES  SHOULD
CONSULT  THEIR  TAX  ADVISORS  AS TO  THE  PARTICULAR  TAX  CONSEQUENCES  OF THE
OWNERSHIP AND DISPOSITION OF THE NOTES,  INCLUDING THE  APPLICABILITY AND EFFECT
OF ANY STATE, LOCAL, FOREIGN OR OTHER TAX LAWS.

EXCHANGE OFFER

         The exchange of the series A notes for series B notes  pursuant to this
exchange  offer should not be treated as an "exchange"  for U.S.  federal income
tax  purposes  because  the  series B notes  will not be  considered  to  differ
materially in kind or extent from the series A notes. Rather, any series B notes
received by you should be treated as a  continuation  of your  investment in the
series A notes. As a result, there should be no material U.S. federal income tax
consequences to you resulting from the exchange  offer. In addition,  you should
have the same adjusted  issue price,  adjusted  basis and holding  period in the
series  B  notes  as you had in the  series  A notes  immediately  prior  to the
exchange.

NON-U.S. HOLDERS

         U.S.  holders  acquiring the notes are subject to different  rules than
those  discussed  below.  For purposes of this  discussion,  a U.S.  holder is a
holder of the notes who is:

         o    a  citizen  or  resident  of the U.S. or any political subdivision
              thereof;

         o    a partnership or corporation created  or organized  in the U.S. or
              under the laws of the U.S. or any political subdivision thereof;

         o    an  estate the income  of which is subject to U.S. federal  income
              taxation regardless of its source;
              or

         o    a trust if a court within  the  U.S. is  able to  exercise primary
              supervision  of the  administration of  the trust  and one or more
              U.S.  persons have  the authority  to control all decisions of the
              trust.

         "U.S." refers to the United States of America (including the States and
the District of Columbia) and its  possessions,  which  include,  as of the date
hereof, Puerto Rico, the U.S. Virgin Islands,  Guam, American Samoa, Wake Island
and the Northern Mariana Islands.  This summary is based upon current provisions
of the U.S. tax code,  applicable Treasury  regulations,  judicial authority and
administrative   rulings  and  practice,  any  of  which  may  be  altered  with
retroactive effect thereby changing the U.S. federal tax consequences  discussed
below.


<PAGE>


         Under  present U.S.  federal  income and estate tax law, and subject to
the discussion below concerning backup withholding:

                   (a) The so-called  "portfolio  interest"  exception  provides
                  that interest on the notes will not be subject to U.S. federal
                  income tax and withholding of U.S. federal income tax will not
                  be  required  with  respect to the payment by us or our paying
                  agent  of  principal  or  interest  on the  notes  owned  by a
                  non-U.S. holder, provided that (1) the beneficial owner of the
                  notes does not actually or  constructively  own 10% or more of
                  the total  combined  voting  power of all  classes of stock of
                  Stericycle  entitled  to vote  within  the  meaning of section
                  871(h)(3) of the U.S.  tax code and the  Treasury  regulations
                  issued  thereunder,  (2)  the  beneficial  owner  is not (i) a
                  foreign  private  foundation  as defined in section 509 of the
                  tax code and the Treasury regulations issued thereunder,  (ii)
                  a bank whose  receipt of interest on the notes is described in
                  section  881(c)(3)(A)  of the tax code or (iii) a  "controlled
                  foreign  corporation" (as defined section 957 of the tax code)
                  that is related  directly,  indirectly or constructively to us
                  through stock  ownership,  (3) the interest is not  considered
                  contingent  interest  under section  871(h)(4) of the tax code
                  and the Treasury  regulations issued  thereunder,  and (4) the
                  beneficial   owner  satisfies  the   requirements   (described
                  generally  below)  set forth in  section  871(h)  and  section
                  881(c)  of the tax code and the  Treasury  regulations  issued
                  thereunder relating to registered securities.

                  To satisfy  the  requirements  referred  to in (4) above,  the
                  beneficial  owner of the  notes,  or a  financial  institution
                  holding  the notes on behalf of the owner,  must  provide,  in
                  accordance with specified procedures,  our paying agent with a
                  statement  to the effect  that the  beneficial  owner is not a
                  U.S.  person.  Currently,  these  requirements  will be met if
                  either (i) the beneficial  owner of the notes  certifies to us
                  or our paying agent,  under  penalties of perjury,  that it is
                  not a U.S. person (which  certification  may be made on an IRS
                  Form W-8 or successor  form) and provides its name and address
                  or (ii) a  securities  clearing  organization,  bank or  other
                  financial  institution that holds customers' securities in the
                  ordinary  course of its trade or  business  and that holds the
                  notes on behalf of a beneficial owner,  certifies to us or our
                  paying agent,  under penalties of perjury,  that the statement
                  has been received by it from the beneficial owner (directly or
                  through  another  intermediary  financial  institution),   and
                  furnishes  us or our  paying  agent  with a  copy  thereof.  A
                  certificate described in this paragraph is effective only with
                  respect  to  payments  of  interest  made  to  the  certifying
                  non-U.S. holder after the issuance of the certificate,  in the
                  calendar year of its issuance and two  immediately  succeeding
                  calendar years.

                  Treasury regulations finalized in 1997, applicable to interest
                  paid   after   December   31,   2000,   provide    alternative
                  documentation  procedures  for  satisfying  the  certification
                  requirement    described   above.    These   regulations   add
                  intermediary certification options for some qualifying agents.
                  Under one option, a withholding agent would be allowed to rely
                  on IRS Form W-8IMY  furnished  by a financial  institution  or
                  other  intermediary on behalf of one or more beneficial owners
                  (or  other  intermediaries)   without  having  to  obtain  the
                  beneficial  owner  certificate   described  in  the  preceding
                  paragraph,   provided  that  the  financial   institution   or
                  intermediary has entered into a withholding agreement with the
                  IRS and  thus is a  "qualified  intermediary".  Under  another
                  option,  an  authorized  foreign  agent of a U.S.  withholding
                  agent  would  be  permitted  to act  on  behalf  of  the  U.S.
                  withholding agent, provided specified conditions are met. With
                  respect to the  certification  requirement  for notes that are
                  held by a foreign  partnership,  the final regulations provide
                  that  unless  the  foreign  partnership  has  entered  into  a
                  withholding  agreement  with the IRS, the foreign  partnership
                  will be required,  in addition to  providing  an  intermediary
                  Form W-8IMY,  to attach an appropriate  certification  by each
                  partner. Prospective investors, including foreign partnerships
                  and  their   partners,   should  consult  their  tax  advisors
                  regarding possible additional reporting requirements.

                   (b) If a non-U.S.  holder cannot satisfy the  requirements of
                  the "portfolio  interest" exception described in paragraph (a)
                  above,  payments of interest made to the non-U.S.  holder will
                  generally  be  subject  to  withholding  tax of 30% unless the
                  beneficial owner of the notes provides us or our paying agent,
                  as the case may be, with a properly executed (i) IRS Form 1001
                  (or successor form) claiming an exemption from or reduced rate
                  of  withholding  under the benefit of a tax treaty or (ii) IRS

<PAGE>


                  Form 4224 (or  successor  form)  stating that interest paid on
                  the notes is not  subject  to  withholding  tax  because it is
                  effectively connected with the beneficial owner's conduct of a
                  trade or  business  in the  United  States.  Under  the  final
                  regulations,  non-U.S.  holders will  generally be required to
                  provide IRS Form W-8BEN,  W-8IMY,  W-8EXP or W-8ECI in lieu of
                  Form 1001 and Form 4224,  although  alternative  documentation
                  may be applicable in specific  situations.  Additionally,  the
                  non-U.S.  holder  may be  required  to obtain a U.S.  taxpayer
                  identification  number.  In each case,  the  relevant IRS form
                  must be delivered  pursuant to applicable  procedures and must
                  be properly  transmitted to the person  otherwise  required to
                  withhold  U.S.  federal  income  tax,  and none of the persons
                  receiving the relevant form may have actual knowledge that any
                  statement on the form is false.

                   (c) A non-U.S.  holder  will not be  subject to U.S.  federal
                  income  tax on  any  gain  realized  on  the  sale,  exchange,
                  retirement,  or other disposition of the notes, unless (i) the
                  holder is an  individual  who is present in the United  States
                  for  183  days or more  during  the  taxable  year  and  other
                  requirements   are  met,  or  (ii)  the  gain  is  effectively
                  connected  with  the  conduct  of a  United  States  trade  or
                  business of the holder.

                   (d) Under  section  2105(b) of the U.S. tax code, if interest
                  on the notes would be exempt from  withholding of U.S. federal
                  income  tax under the rules set forth in  paragraph  (a) above
                  (without regard to the statement requirement),  the notes will
                  not be  included  in the estate of a non-U.S.  holder for U.S.
                  federal estate tax purposes.

                   (e) If a non-U.S. holder is engaged in a trade or business in
                  the United  States and interest on the notes (or gain realized
                  on the sale,  exchange or other  disposition  of the notes) is
                  effectively  connected  with  the  conduct  of  the  trade  or
                  business,  the  non-U.S.  holder,  although  exempt  from  the
                  withholding tax discussed above,  will generally be subject to
                  U.S. federal income tax on the effectively connected income in
                  the same  manner  as if it were a U.S.  person.  The  non-U.S.
                  holder  may also  need to  provide  a United  States  taxpayer
                  identification  number  (social  security  number or  employer
                  identification  number) on the forms  referred to in paragraph
                  (b) above in order to meet the  requirements  set forth above.
                  In addition, if the non-U.S.  holder is a foreign corporation,
                  it may be subject to a branch  profits tax equal to 30% of its
                  effectively  connected  earnings  and  profits for the taxable
                  year, subject to adjustments.  For this purpose,  interest on,
                  and  any  gain  recognized  on the  sale,  exchange  or  other
                  disposition  of, the notes  will be  included  in the  foreign
                  corporation's  effectively  connected  earnings and profits if
                  the  interest  or gain,  as the case  may be,  is  effectively
                  connected  with the  conduct by the foreign  corporation  of a
                  trade or business in the United States.

BACKUP WITHHOLDING AND INFORMATION REPORTING

         "Backup" withholding and information  reporting  requirements may apply
to payments on, and to proceeds of sale before maturity of, the notes.  Interest
paid to a  non-U.S.  holder on a  registered  security  will be  required  to be
reported  annually on IRS Form  1042-S.  We are not  obligated  to  reimburse or
indemnify holders of the notes, including non-U.S.  holders, for any tax imposed
on, or withheld from payments with respect to, the notes.

         No information reporting on IRS Form 1099 or backup withholding will be
required  with  respect to payments  made by us or any paying  agent to non-U.S.
holders on registered  securities with respect to which a statement described in
paragraph (a)(4) above has been received;  provided that we or our paying agent,
as the case may be, does not have actual  knowledge that the beneficial owner is
a U.S. person.

         In addition,  backup  withholding  and  information  reporting will not
apply if payments of principal or interest on the notes are paid to or collected
by a foreign office of a custodian,  nominee or other foreign agent on behalf of
the  beneficial  owner of the notes,  or if the  foreign  office of a broker (as
defined in applicable Treasury regulations) pays the proceeds of the sale of the
notes to the owner thereof. If, however, the nominee, custodian, agent or broker
is, for U.S. federal income tax purposes,  a U.S.  person, a controlled  foreign
corporation or a foreign person 50% or more of whose gross income is effectively
connected with the conduct of a United States trade or business for a three-year
period,   or  another  United  States   related  person   described  in  Section

<PAGE>


1.6049-5(c)(5) of the Treasury  regulations,  then information reporting will be
required unless (i) the custodian,  nominee,  agent or broker has in its records
documentary evidence that the beneficial owner is not a U.S. person and specific
other conditions are met or (ii) the beneficial  owner otherwise  establishes an
exemption.

         Payments of principal and interest on the notes to the beneficial owner
of the notes by a United  States  office of a  custodian,  nominee or agent,  or
payment by the United  States  office of a broker of the proceeds of the sale of
the notes,  will be  subject to  information  reporting  and backup  withholding
unless the holder or  beneficial  owner  provides the  statement  referred to in
paragraph  (a)(4) above or otherwise  establishes an exemption from  information
reporting and backup  withholding,  and the payor does not have actual knowledge
that the beneficial owner is a U.S. person.

APPLICABLE TAX TREATIES

         Non-U.S.  holders and  purchasers  should also  consult any  applicable
income tax  treaties,  which may  provide for a lower rate of  withholding  tax,
exemption from or reduction of branch profits tax, or other rules different from
those under United States federal tax laws.

         The U.S.  federal income tax discussion set forth above is included for
general  information  only and may not be applicable  depending  upon a holder's
particular  situation.  You should  consult your own tax advisor with respect to
the  consequences of your ownership and disposition of the notes,  including the
tax consequences under state, local, foreign and other tax laws and the possible
effects on you of changes in U.S. federal or other tax laws.



<PAGE>


                              PLAN OF DISTRIBUTION

         Each  broker-dealer  that  receives  series B notes for its own account
pursuant  to this  exchange  offer,  sometimes  referred  to as a  participating
broker,  must  acknowledge  that it will deliver a prospectus in connection with
any  resale of the  series B notes.  This  prospectus,  as it may be  amended or
supplemented  from  time  to  time,  may be used by a  participating  broker  in
connection  with any resale of series B notes  received in exchange for series A
notes  where the  series A notes  were  acquired  as a result  of  market-making
activities or other trading activities.  We have agreed that for a period of one
year from the expiration of this exchange offer,  we will make this  prospectus,
as amended or  supplemented,  available to any  participating  broker for use in
connection with the resales. In addition, until March 15, 2000, 90 days from the
date of this prospectus,  all broker-dealers effecting transactions in the notes
may be required to deliver a prospectus.

         We will not  receive  any  proceeds  from any sale of series B notes by
broker-dealers.  Series B notes received by any participating broker may be sold
from time to time in one or more transactions in the over-the-counter market, in
negotiated transactions, through the writing of options on the series B notes or
a combination of the methods of resale,  at market prices prevailing at the time
of resale,  at prices  related to the  prevailing  market  prices or  negotiated
prices.  Any resale may be made directly to purchasers or to or through  brokers
or  dealers  who  may  receive  compensation  in  the  form  of  commissions  or
concessions from any broker-dealer  and/or the purchasers of any series B notes.
Any participating broker that resells notes that were received by it for its own
account  pursuant  to  this  exchange  offer  and  any  broker  or  dealer  that
participates  in a  distribution  of  series  B  notes  may be  deemed  to be an
underwriter  within  the  meaning  of the  Securities  Act and any profit on any
resale of series B notes and any  commissions  or  concessions  received  by any
persons may be deemed to be underwriting  compensation under the Securities Act.
The letter of transmittal states that by acknowledging that it will deliver, and
by  delivering,  a prospectus as required,  a  participating  broker will not be
deemed to admit that it is an  underwriter  within the meaning of the Securities
Act.

         For a period of one year from the expiration of this exchange offer, we
will send a reasonable  number of additional  copies of this  prospectus and any
amendment or supplement  to this  prospectus  to any  participating  broker that
requests  these  documents  in the  letter of  transmittal.  We will pay all the
expenses  incident to this exchange offer,  which shall not include the expenses
of any holder in  connection  with resales of series B notes.  We have agreed to
indemnify holders of series B notes, including any participating broker, against
some liabilities, including liabilities under the Securities Act.

                                  LEGAL MATTERS

         McDermott,  Will & Emery, Chicago,  Illinois will opine on the validity
of the series B notes for us.

                         INDEPENDENT PUBLIC ACCOUNTANTS

         Ernst & Young LLP,  independent  public  accountants,  have audited our
consolidated financial statements at December 31, 1998 and 1997, and for each of
the three years in the period ended  December  31,  1998,  as set forth in their
report. We have included our consolidated financial statements in the prospectus
and  elsewhere  in the  registration  statement  in  reliance on Ernst & Young's
report, given on their authority as experts in accounting and auditing.  We have
included in this registration  statement the audited financial statements of the
BFI medical  waste  business as of September  30, 1998 and for each of the three
years in the period ended  September 30, 1998 in reliance on the audit report of
Arthur Andersen LLP, which issued the report as independent  public  accountants
and as experts in auditing and accounting.

<PAGE>


<TABLE>

                                           INDEX TO FINANCIAL STATEMENTS
<CAPTION>


                                                                                                                     PAGE
                                                                                                                     ----

<S>                                                                                                                  <C>
STERICYCLE, INC. FINANCIAL STATEMENTS
    Report of Independent Public Accountants......................................................................   F-2
    Consolidated Balance Sheets as of December 31, 1997 and 1998..................................................   F-3
     Consolidated Statements of Operations for each of the years in the three year
        period ended December 31, 1998............................................................................   F-4
     Consolidated Statements of Cash Flows for each of the years in the three year
        period ended December 31, 1998............................................................................   F-5
     Consolidated Statements of Shareholder's Equity for each of the years in the
        three year period ended December 31, 1998.................................................................   F-6
    Notes to Consolidated Financial Statements....................................................................   F-7
    Consolidated Balance Sheet as of September 30, 1999 (Unaudited)...............................................  F-22
     Consolidated Statements of Operations for the nine months ended September 30, 1998
        and 1999 (Unaudited)......................................................................................  F-23
     Consolidated Statements of Cash Flows for the nine months ended September 30, 1998
        and 1998 (Unaudited)......................................................................................  F-24
    Notes to Unaudited Consolidated Financial Statements..........................................................  F-25

BFI MEDICAL WASTE BUSINESS FINANCIAL STATEMENTS
    Report of Independent Public Accountants......................................................................  F-30
        Statements of Directly Identifiable Assets and Liabilities of BFI Medical
        Waste as of September 30, 1997 and 1998 and June 30, 1999.................................................  F-31
     Statements of Revenues  and Direct  Expenses  of BFI Medical  Waste for the
        Years Ended  September  30, 1996,  1997 and 1998 and for the nine months
        ended
        June 30, 1998 and 1999....................................................................................  F-32
    Notes to Financial Statements.................................................................................  F-33

</TABLE>

<PAGE>



                         REPORT OF INDEPENDENT AUDITORS

The Board of Directors and Shareholders
Stericycle, Inc.

         We  have  audited  the  accompanying  consolidated  balance  sheets  of
Stericycle,  Inc. and  Subsidiaries  as of December  31, 1997 and 1998,  and the
related consolidated statements of operations,  changes in shareholders' equity,
and cash flows for each of the years in the three-year period ended December 31,
1998. These  consolidated  financial  statements are the  responsibility  of the
Company's  management.  Our  responsibility  is to  express  an opinion on these
consolidated 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 our audits provide a reasonable basis for our opinion.

         In our opinion, the consolidated financial statements referred to above
present fairly, in all material respects, the consolidated financial position of
Stericycle,  Inc.  and  Subsidiaries  at  December  31,  1997 and 1998,  and the
consolidated  results of their  operations  and their cash flows for each of the
years in the  three-year  period ended  December 31, 1998,  in  conformity  with
generally accepted accounting principles.

                                                             ERNST & YOUNG LLP


Chicago, Illinois
March 16, 1999, except Note 16, as to which the date is
November 12, 1999


<PAGE>

<TABLE>

                                         STERICYCLE, INC. AND SUBSIDIARIES

                                            CONSOLIDATED BALANCE SHEETS
                                  (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
<CAPTION>

                                                                                                      DECEMBER 31,
                                                                                                      ------------
                                                                                                1997              1998
                                                                                                ----              ----

                                     ASSETS
<S>                                                                                        <C>             <C>
Current assets:
   Cash and cash equivalents............................................................   $       5,374   $       1,283
   Short-term investments...............................................................              --             536
   Accounts receivable, less allowance for doubtful accounts of
      $361 in 1997 and $901 in 1998.....................................................          10,286          16,582
   Parts and supplies...................................................................             660           1,291
   Prepaid expense......................................................................             440           1,283
   Other ...............................................................................             392             835
                                                                                           -------------   -------------
      Total current assets..............................................................          17,152          21,810
                                                                                           -------------   -------------
Property, plant and equipment:
   Land  ...............................................................................              90             680
   Buildings and improvements...........................................................           5,561          10,514
   Machinery and equipment..............................................................          11,469          18,924
   Office equipment and furniture.......................................................             746           1,425
   Construction in progress.............................................................             614           1,007
                                                                                           -------------   -------------
                                                                                                  18,480          32,550
Less accumulated depreciation...........................................................          (7,239)         (9,450)
                                                                                           -------------   -------------
      Property, plant and equipment, net................................................          11,241          23,100
                                                                                           -------------   -------------
Other assets:
    Goodwill, less accumulated amortization of $2,040 in 1997
      and $3,551 in 1998................................................................          29,458          49,112
    Other...............................................................................           3,375           3,733
                                                                                           -------------   -------------
      Total other assets................................................................          32,833          52,845
                                                                                           -------------   -------------
      Total assets......................................................................   $      61,226   $      97,755
                                                                                           =============   =============

                      LIABILITIES AND SHAREHOLDERS' EQUITY
Current liabilities:
   Current portion of long term debt....................................................   $       3,052   $       5,499
   Accounts payable.....................................................................           1,927           6,502
   Accrued liabilities..................................................................           7,039           6,465
   Deferred revenue.....................................................................             255           2,178
                                                                                           -------------   -------------
      Total current liabilities.........................................................          12,273          20,644
                                                                                           -------------   -------------
Long term debt, net of current portion..................................................           3,475          23,460
Other liabilities.......................................................................             452              --
Shareholders' equity:
    Common  stock  (par value  $.01 per  share,  30,000,000  shares  authorized,
      10,472,799 issued and outstanding in 1997,
      10,865,862 issued and outstanding in 1998)........................................             105             109
   Additional paid-in capital...........................................................          82,986          85,894
   Notes receivable for common stock purchases..........................................              (4)             --
   Accumulated deficit..................................................................         (38,061)        (32,352)
                                                                                           -------------   -------------
      Total shareholders' equity........................................................          45,026          53,651
                                                                                           -------------   -------------
      Total liabilities and shareholders' equity........................................   $      61,226   $      97,755
                                                                                           =============   =============


                         The  accompanying  notes are an integral  part of these financial statements.

</TABLE>

<PAGE>

<TABLE>

                                         STERICYCLE, INC. AND SUBSIDIARIES

                                       CONSOLIDATED STATEMENTS OF OPERATIONS
                                       (IN THOUSANDS, EXCEPT PER SHARE DATA)
<CAPTION>


                                                                                      YEAR ENDED DECEMBER 31,
                                                                                      -----------------------
                                                                              1996             1997             1998
                                                                              ----             ----             ----


<S>                                                                      <C>               <C>               <C>
Revenues..............................................................   $       24,542    $       46,166    $   66,681
Costs and expenses:
   Cost of revenues...................................................           19,423            34,109        45,328
   Selling, general and administrative expenses.......................            7,556            10,671        14,929
                                                                         --------------    --------------    ----------
      Total costs and expenses........................................           26,979            44,780        60,257
                                                                         --------------    --------------    ----------
Income (loss) from operations.........................................           (2,437)            1,386         6,424
Other income (expense):
   Interest income....................................................              421               618           714
   Interest expense...................................................             (373)             (428)         (777)
                                                                         --------------    --------------    ----------
      Total other income (expense)....................................               48               190           (63)
                                                                         --------------    --------------    ----------
Income (loss) before income taxes.....................................   $       (2,389)   $        1,576    $    6,361
Income tax expense....................................................               --               146           648
Net income (loss).....................................................   $       (2,389)   $        1,430    $    5,713
                                                                         ==============    ==============    ==========
Basic earnings per share:
   Basic net income (loss) per share..................................   $       (0.32)    $         0.14    $     0.54
                                                                         =============     ==============    ==========
Diluted earnings per share:
   Diluted net income (loss) per share................................   $       (0.32)    $         0.13    $     0.51
                                                                         =============     ==============    ==========


                         The  accompanying  notes are an integral  part of these financial statements.

</TABLE>

<PAGE>

<TABLE>

                                         STERICYCLE, INC. AND SUBSIDIARIES

                                       CONSOLIDATED STATEMENTS OF CASH FLOWS
                                                  (IN THOUSANDS)
<CAPTION>

                                                                                      YEAR ENDED DECEMBER 31,
                                                                                      -----------------------
                                                                              1996             1997             1998
                                                                              ----             ----             ----


<S>                                                                      <C>               <C>               <C>
OPERATING ACTIVITIES:
Net income (loss).....................................................   $       (2,389)   $        1,430    $    5,713
Adjustment to reconcile net income (loss) to net
    cash provided by (used in) operating activities:
    Depreciation and amortization.....................................            2,064             3,078         4,064
Changes in operating assets, net of effect of acquisitions:
   Accounts receivable................................................             (554)           (4,123)       (1,884)
   Parts and supplies.................................................              144              (300)         (420)
   Prepaid expenses...................................................              (18)              (14)           58
   Other assets.......................................................              (37)               98           302
   Accounts payable...................................................             (428)             (413)        1,781
   Accrued liabilities................................................            1,178               559        (6,223)
   Deferred revenue and other liabilities.............................               97              (415)        1,471
                                                                         --------------    --------------    ----------
Net cash provided by (used in) operating activities...................               57              (100)        4,862
                                                                         --------------    --------------    ----------
INVESTING ACTIVITIES:
   Capital expenditures...............................................             (995)           (1,235)       (4,342)
   Payments for acquisitions, net of cash acquired....................           (6,516)           (5,552)      (19,775)
   Proceeds from maturity of short-term investments...................               --             5,799            --
   Purchases of short-term investments................................           (5,799)           (2,335)          (41)
   Proceeds from sale of property.....................................               --                --           405
                                                                         --------------    --------------    ----------
Net cash used in investing activities.................................          (13,310)           (3,323)      (23,753)
                                                                         --------------    --------------    ----------
FINANCING ACTIVITIES:
   Net proceeds from bank lines of credit.............................             (858)               --        16,386
   Repayment of long term debt........................................           (3,275)           (2,905)       (3,189)
   Principal payments on capital lease obligations....................             (397)             (305)       (1,273)
   Principal payments on notes receivable for
      common stock purchases..........................................               60                --            --
   Proceeds from long-term debt.......................................            1,000                --            --
   Proceeds from subordinated notes...................................               --                --         2,750
   Payment of deferred financing costs................................               --                --          (218)
   Proceeds from issuance of common stock.............................           28,535                57           344
                                                                         --------------    --------------    ----------
Net cash provided by (used in) financing activities...................           25,065            (3,153)       14,800
                                                                         --------------    --------------    ----------
Net (decrease) increase in cash and cash and
   cash equivalents...................................................           11,812            (6,576)       (4,091)
Cash and cash equivalents at beginning of year........................              138            11,950         5,374
                                                                         --------------    --------------    ----------
Cash and cash equivalents at end of year..............................   $       11,950    $        5,374    $    1,283
                                                                         ==============    ==============    ==========
Non-cash activities:
   Issuance of common stock for certain acquisitions..................   $           --    $        3,525    $    2,568
   Issuance of notes payable for certain acquisitions.................   $        6,497    $        1,120    $      195


                         The  accompanying  notes are an integral  part of these financial statements.

</TABLE>

<PAGE>

<TABLE>

                                         STERICYCLE, INC. AND SUBSIDIARIES

                            CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY
                                   YEARS ENDED DECEMBER 31, 1996, 1997, AND 1998
                                                  (IN THOUSANDS)
<CAPTION>

                                                                                                    NOTES
                                                       ISSUED AND                  ADDITIONAL  RECEIVABLE FOR     TOTAL
                                                  OUTSTANDING  PAR     PAID-IN    COMMON STOCK   ACCUMULATED  SHAREHOLDERS'
                                                       SHARES VALUE    CAPITAL      PURCHASES      DEFICIT       EQUITY
                                                       ------ -----    -------      ---------      -------       ------


<S>                                                  <C>      <C>      <C>         <C>          <C>          <C>
BALANCES AT DECEMBER 31, 1995..................      5,582    $    55  $  49,621   $       --   $  (37,102)  $    12,574
Initial public offering of common
   stock (net of offering costs)...............      3,450         35     27,586                                  27,621
Issuance of common stock for exercise
   of options and warrants and
   employee stock purchases....................        870          9        717          (64)                       662
Note payable exchanged for common
   stock ......................................         98          1      1,485                                   1,486
Principal payments under note
   receivable..................................                                            60                         60
   Net loss....................................                                                     (2,389)       (2,389)
                                                 ---------    -------  ---------   ----------   ----------   -----------

BALANCES AT DECEMBER 31, 1996..................     10,000    $   100  $  79,409   $       (4)  $  (39,491)  $    40,014
Issuance of common stock for
   exercise of options and warrants
   and employee stock purchases................         70    $     1         56                                      57
Common stock issued for acquisitions...........        403          4      3,521                                   3,525
Net income.....................................                                                      1,430         1,430
                                                 ---------    -------  ---------   ----------   ----------   -----------

BALANCES AT DECEMBER 31, 1997..................     10,473    $   105  $  82,986   $       (4)  $  (38,061)  $    45,026
Issuance of common stock for
   exercise of options and warrants
   and employee stock purchases................        226    $     2        342                                     344
Common stock issued for acquisitions...........        167          2      2,566                                   2,568
Principal payments under note
   receivable..................................                                             4           (4)            0
Net income.....................................                                                      5,713         5,713
                                                 ---------    -------  ---------   ----------   ----------   -----------
BALANCES AT DECEMBER 31, 1998..................     10,866    $   109  $  85,894   $       --   $  (32,352)  $    53,651
                                                 =========    =======  =========   ==========   ==========   ===========




                    The  accompanying  notes  are  an  integral  part  of  these financial statements.



</TABLE>


<PAGE>


                        STERICYCLE, INC. AND SUBSIDIARIES

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                DECEMBER 31, 1998


NOTE 1--DESCRIPTION OF BUSINESS

         Stericycle,  Inc. and  Subsidiaries  (the "Company")  provides  medical
waste collection,  transportation,  treatment,  disposal, reduction, re-use, and
recycling services to hospitals, health care providers, and other small quantity
generators in the United States and Canada.  The Company is also  expanding into
international  markets  through joint ventures and by licensing its  proprietary
technology and selling associated equipment.

NOTE 2--SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

PRINCIPLES OF CONSOLIDATION

         The  consolidated   financial   statements   include  the  accounts  of
Stericycle,  Inc. and its  wholly-owned  subsidiaries,  Stericycle  of Arkansas,
Inc.,  Stericycle of Washington,  Inc.,  SWD  Acquisition  Corp.,  Environmental
Control Co., Inc. ("ECCO"), Waste Systems, Inc. ("WSI") (majority shareholder of
3CI Complete Compliance Corporation ("3CI")),  Mid-America Environmental,  Inc.,
507375  N.B.  Ltd.,  and  Med-Tech   Environmental  Limited  ("Med-Tech").   All
significant intercompany accounts and transactions have been eliminated.

REVENUE RECOGNITION

         The Company  recognizes  revenue when the  treatment  of the  regulated
medical  waste is  completed  on-site  or the  waste  is  shipped  off-site  for
processing and disposal.  For waste shipped  off-site,  all associated costs are
recognized  at time of  shipment.  Revenue and costs on  contracts to supply the
Company's proprietary treatment equipment are accounted for by the percentage of
completion method,  whereby income is recognized based on the estimated stage of
completion of the individual contract.

CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS

         The Company considers all highly liquid  instruments with a maturity of
less  than  three  months  when  purchased  to be cash  equivalents.  Short-term
investments  consist of highly liquid  investments in corporate debt obligations
and  certificates  of  deposit  which  mature  in less  than  one  year  and are
classified as held-to-maturity.  These obligations are stated at amortized cost,
which approximates fair market value. Interest income is recognized as earned.

PROPERTY, PLANT AND EQUIPMENT

         Property,  plant and  equipment  are stated at cost.  Depreciation  and
amortization,  which include the  depreciation  of assets recorded under capital
leases,  are computed using the  straight-line  method over the estimated useful
lives of the assets as follows:

Buildings and improvement                   --        10 to 30 years
Machinery and equipment                     --        3 to 10 years
Office equipment and furniture              --        5 to 10 years

GOODWILL

         Goodwill is  amortized  using the  straight-line  method over 25 years.
Amortization   expense  for  1996,   1997  and  1998  related  to  goodwill  was
approximately $390,000, $1,042,000 and $1,505,000, respectively.


<PAGE>


         The Company continually  evaluates the value and future benefits of its
goodwill.  The Company  assesses  recoverability  from future  operations  using
income from operations of the related acquired business as a measure. Under this
approach, the carrying value of goodwill would be reduced if it becomes probable
that the Company's best estimate for expected  undiscounted future cash flows of
the related business would be less than the carrying amount of goodwill over its
remaining  amortization  period.  For the  three-year  period ended December 31,
1998,  there were no adjustments to the carrying  amounts of goodwill  resulting
from these evaluations.

NEW PLANT DEVELOPMENT AND PERMITTING COSTS

         The Company  expenses costs associated with the operation of new plants
prior to the  commencement of services to customers and all initial and on-going
costs related to permitting.

RESEARCH AND DEVELOPMENT COSTS

         The Company  expenses costs associated with research and development as
incurred. Research and development expense for 1996, 1997 and 1998 was $194,000,
$281,000 and $15,000, respectively.

INCOME TAXES

         Deferred  income  taxes  reflect  the  net  tax  effects  of  temporary
differences between the carrying amounts of assets and liabilities for financial
reporting  purposes and the amounts used for income tax  purposes.  Deferred tax
liabilities  and assets are  determined  based on the  differences  between  the
financial  statement and tax bases of assets and  liabilities  using enacted tax
rates in effect for the year in which the differences are expected to reverse.

FINANCIAL INSTRUMENTS

         The  Company's   financial   instruments   consist  of  cash  and  cash
equivalents,   short-term  investments,  accounts  receivable  and  payable  and
long-term  debt.  The  fair  values  of  these  financial  instruments  were not
materially  different from their carrying values.  Financial  instruments  which
potentially  subject  the  Company  to  concentrations  of credit  risk  consist
principally  of  accounts  receivable.  Credit  risk  on  trade  receivables  is
minimized  as a result of the large  size of the  Company's  customer  base.  No
single customer  represents greater than 10% of total accounts  receivable.  The
Company  performs  ongoing  credit  evaluation  of its  customers  and maintains
allowances for potential credit losses.  These losses, when incurred,  have been
within the range of management's expectations.

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.

SEGMENT REPORTING

         Effective January 1, 1998, the Company adopted the Financial Accounting
Standards  Board's  Statement  of  Financial   Accounting   Standards  No.  131,
"Disclosures  about  Segments of an Enterprise  and Related  Information"  ("FAS
131").  FAS  131  establishes   standards  for  the  way  that  public  business
enterprises  report  information  about operating  segments in annual  financial
statements and requires that those enterprises report selected information about
operating segments in interim financial reports.  It also establishes  standards
for related enterprise-wide disclosures about products and services,  geographic
areas, and major customers. The adoption of FAS 131 did not affect the Company's
results of operations or financial position, but did affect its disclosures. The
Company's operating segments, (Stericycle, Inc., WSI, and Med-Tech) have similar
economic  characteristics  and are similar in the nature of their  products  and
services,  treatment processes,  types of customers,  methods of distribution of
services, and nature of their regulatory environments. Based on this conclusion,
the Company has not presented segment  disclosure  information.  The Company has
provided its enterprise-wide disclosures in Note 15.


<PAGE>


NOTE 3--PUBLIC OFFERINGS

         On August 28 and August 30, 1996, the Company successfully completed an
initial public offering of 3,500,000 shares of common stock at $9 per share. The
Company  received total proceeds from the offering,  net of offering  costs,  of
approximately $27,621,000.

         On  February  5, 1999,  the  Company  successfully  completed  a public
offering of 3,500,000  shares of common  stock at $14.50 per share.  The Company
received  total  proceeds  from  the  offering,   net  of  offering   costs,  of
approximately $47,250,000.

NOTE 4--INCOME TAXES

         The Company's  deferred tax  liabilities  and assets as of December 31,
1997 and 1998 are as follows:

<TABLE>

                                                                                              1997              1998
                                                                                              ----              ----


<S>                                                                                 <C>                  <C>
Deferred tax liabilities:
   Capital lease obligations...................................................     $        (461,000)   $      (561,000)
   Property, plant and equipment...............................................              (509,000)          (357,000)
   Goodwill....................................................................              (228,000)          (465,000)
   Other ......................................................................                    --           (265,000)
                                                                                    -----------------    ---------------
Total deferred tax liabilities.................................................            (1,198,000)        (1,648,000)
Deferred tax assets:
   Accrued liabilities.........................................................               857,000            659,000
   Research and development costs..............................................               324,000            324,000
   Other ......................................................................               195,000            149,000
   Net operating tax loss carryforward.........................................            14,344,000         10,927,000
   Alternative minimum tax credit carry-forward................................                60,000            140,000
                                                                                    -----------------    ---------------
Total deferred tax assets......................................................            15,780,000         12,199,000
                                                                                    -----------------    ---------------
   Net deferred tax assets.....................................................            14,582,000         10,551,000
   Valuation allowance.........................................................           (14,582,000)       (10,551,000)
                                                                                    -----------------    ---------------
       Net deferred tax assets.................................................     $              --    $            --
                                                                                    =================    ===============

</TABLE>

         At December 31, 1998, the Company had net operating loss  carryforwards
for  federal  income tax  purposes of  approximated  $27,000,000,  which  expire
beginning in 2004. Based on the Internal  Revenue Code of 1986, as amended,  and
changes in the ownership of the Company,  utilization  of the net operating loss
carryforwards  are  subject  to annual  limitations  which  could  significantly
restrict or partially  eliminate the  utilization  of the net operating  losses.
Additionally,  the Company has an alternative minimum tax credit carryforward of
$140,000 available indefinitely.

         Significant components of the Company's income tax expense for the year
ended December 31, 1997 and 1998 are as follows:

<TABLE>

                                                                                              1997              1998
                                                                                              ----              ----


<S>                                                                                 <C>                  <C>
Current
   Federal.....................................................................     $          60,000    $       243,000
   State ......................................................................                86,000            405,000
                                                                                    -----------------    ---------------
   Total provisions............................................................     $         146,000    $       648,000
                                                                                    =================    ===============
</TABLE>

         A  reconciliation  of the income tax provision  computed at the federal
statutory  rate to the effective tax rate for the years ended  December 31, 1997
and 1998 is as follows:



<PAGE>

<TABLE>

                                                                                            1997                1998
                                                                                            ----                ----


<S>                                                                                        <C>               <C>
Federal statutory income tax rate..............................................            34.0%             34.0%
Effect of:
   State taxes, net of federal tax effect......................................             4.4%              4.0%
   Alternative minimum taxes...................................................             3.8%              3.8%
   Nondeductible goodwill amortization.........................................             4.5%              1.8%
   Other ......................................................................             1.7%             --
   Utilization of net operating loss carryforward..............................           (39.1)%           (33.4)%
                                                                                        -------           -------
Effective tax rate.............................................................             9.3%             10.2%
                                                                                        =======           =======
</TABLE>

         The Company  paid income  taxes of  $1,030,000  and $58,300 in 1998 and
1997.  Additionally,  the Company did not  recognize  any income tax benefit for
1996 due to the Company's  historical  operating losses and valuation allowances
established for net deferred tax assets.

NOTE 5--ACQUISITIONS

         In late  December  1998 the  Company  gained  control of a  significant
majority of the outstanding common stock and warrants of Med-Tech  Environmental
Limited  ("Med-Tech")  and in  January  1999  the  Company  acquired  all of the
remaining outstanding common stock and warrants of Med-Tech.  Med-Tech, which is
located in Toronto, Canada, provides medical waste management services in Canada
and the  northeastern  United States.  The Company paid a total of approximately
$3,059,000  in cash for the Med-Tech  shares and warrants  that it acquired.  In
October 1998, the Company purchased  Med-Tech's  junior secured  indebtedness of
approximately  $3,576,000,  paying the face value of the acquired  debt,  in the
form of $2,920,000 in cash and 36,940 shares of the Company's  common stock, and
replacing a letter of credit of approximately $1,641,000 (which was cancelled in
January 1999).

         In October 1998, the Company  acquired all of the  outstanding  capital
stock of Waste Systems,  Inc. ("WSI"). The purchase price was (i) $10,000,000 in
cash and (ii) the grant of  certain  exclusive  negotiation  and  first  refusal
rights to the sellers in connection  with the  purchase,  for  installation  and
operation in the Federal  Republic of Germany,  of medical waste treatment units
incorporating the Company's  proprietary ETD technology.  WSI owns approximately
52.2% of the common stock and all of the preferred  stock of 3CI, which provides
regulated medical waste management  services in the southeastern  United States.
3CI's  common  stock is traded on the Nasdaq  SmallCap  Market  under the symbol
"TCCC." WSI also owns a secured  promissory  note from 3CI which,  as amended in
December  1998,  is  payable  to WSI in the  principal  amount of  approximately
$6,237,000 on or before September 30, 1999.

         In August 1998, the Company acquired the customer contracts,  vehicles,
and certain other assets of the regulated  medical waste management  business of
Medical Compliance Services, Inc. (MCS) for $5,850,000 in cash. The Company also
agreed to purchase from MCS and a related party, MCS's  Albuquerque,  New Mexico
treatment  facility and  equipment for  $1,250,000 in cash.  The purchase of the
treatment facility and equipment closed in March 1999.

         In May 1997,  the  Company  acquired  all of the  outstanding  stock of
Environmental  Control Co., Inc.  ("ECCO"),  a regulated  medical waste business
operating in the New York City  market.  The company  paid  $4,200,000  in cash,
issued 125,000 shares of stock, assumed debt on vehicles and issued a $2,300,000
10-year  promissory note for the balance of the purchase  price.  The note bears
interest  at the rate of 6.86% per annum  payable  in 10 equal  installments  of
$230,000, which started in May 1998.

         In December 1996, the Company  purchased the customer lists,  vehicles,
and certain other assets of the major  portion of the medical waste  business of
Waste Management, Inc. ("WMI") for $5,450,000 in cash and a note for $5,210,000.
During the quarter  ended June 30, 1997,  adjustments  were made to the value of
the  vehicles  purchased  and to the  purchase  price.  The  purchase  price was
decreased by $756,000 as specified in the  agreement,  and the related  goodwill
and note payable were adjusted  accordingly.  The Company finalized its estimate
of the value of the vehicles purchased and reduced the related note accordingly.
In the quarter  ended  December 31, 1997,  the purchase  price was  decreased by
$163,000 as specified in the  agreement,  and the related  goodwill was adjusted
accordingly.  The Company  paid the  adjusted  balance of the note plus  accrued
interest in 1997 and 1998.

<PAGE>


         In  addition to the above  acquisitions,  in 1996,  1997 and 1998,  the
Company  acquired the  customer  contracts  and other  assets of nineteen  other
regulated medical waste businesses.  The purchase prices for these  acquisitions
were paid by a combination of cash, notes payable, and shares of common stock of
the Company.

         For financial  reporting  purposes these acquisition  transactions were
accounted  for using the  purchase  method of  accounting.  The total  aggregate
purchase  price  for  1996,  1997  and  1998  of  $13,013,000,  $10,197,000  and
$22,538,000,  respectively,  net of cash  acquired,  was allocated to the assets
acquired and liabilities  assumed based on their estimated fair market values at
the dates of acquisition.  The total  aggregate  purchase price of 1997 and 1998
acquisitions  includes the value of 403,000 and 167,000  shares of common stock,
respectively,  issued to the sellers. The excess of the purchase prices over the
fair market values of the net assets  acquired is reflected in the  accompanying
Consolidated  Balance  Sheets as goodwill.  The results of  operations  of these
acquired  businesses are included in the  Consolidated  Statements of Operations
from the respective dates of acquisition. The effect of these acquisitions would
not have a  significant  effect  on the  Company's  operations,  except  for the
Med-Tech, WSI, MCS and ECCO acquisitions.

         The following  unaudited  pro forma results of operations  assumes that
the  Med-Tech,  WSI, MCS and ECCO  acquisitions  occurred as of January 1, 1997,
after giving effect to certain adjustments  including  amortization of goodwill,
increased  interest expense on debt incurred in connection with the acquisitions
and  adjustments  to record  incremental  recurring  costs  associated  with the
consolidation  of the operations as the historical  results of operations of Med
Tech, WSI, MCS and ECCO did not reflect these costs:

<TABLE>

                                                                                                   YEAR ENDED
                                                                                                  DECEMBER 31,
                                                                                                  ------------
                                                                                            1997                  1998
                                                                                            ----                  ----
                                                                                              (IN THOUSANDS, EXCEPT
                                                                                                 PER SHARE DATA)


<S>                                                                                        <C>                   <C>
Pro forma revenues.............................................................            $79,213               $91,726
Pro forma net income (loss)....................................................            (3,031)                 4,245
Pro forma diluted net income (loss) per share..................................             (0.29)                  0.38

</TABLE>

         The unaudited pro forma  financial  information  does not purport to be
indicative  of the  results  of  operations  that would  have  occurred  had the
transactions  taken place at the beginning of the periods indicated or of future
results of operations.

NOTE 6--LONG-TERM DEBT

         Long-term debt consists of the following at December 31:
<TABLE>

                                                                                           1997                   1998
                                                                                           ----                   ----
                                                                                                 (IN THOUSANDS)


<S>                                                                               <C>                         <C>
Industrial development revenue bonds..................................            $         1,358             $    1,093
Obligations under capital leases......................................                        212                    847
Notes payable to banks................................................                         --                 19,412
Subordinated debt.....................................................                         --                  2,750
Notes payable.........................................................                      4,957                  4,857
                                                                                  ---------------             ----------
                                                                                          6,527                   28,959
Less: Current portion.................................................                      3,052                  5,499
                                                                                  ---------------             ----------
       Total..........................................................            $         3,475             $   23,460
                                                                                  ===============             ==========
</TABLE>

         In  December  1998,  the  Company  entered  into  a  subordinated  loan
agreement  with a group of  lenders  consisting  of six of the  Company's  seven
directors pursuant to which the lenders agreed to provide the Company with up to
$5,500,000 of short-term  financing upon the Company's request.  At December 31,
1998 the Company had borrowed  $2,750,000.  Each loan bore  interest at 6.0% per
annum and was due on the earlier of 10 days after  completion  of the  Company's
February 5, 1999 public  offering  pending  when the loan was made or January 5,
2000.  Under the terms of the  subordinated  loan  agreement,  the lenders  were
granted  five-year  warrants to purchase  shares of the  Company's  common stock

<PAGE>


exercisable  at any time after the first  anniversary  of the grant  date.  Upon
entering into the loan agreement, each lender was granted a warrant for a number
of shares of common  stock equal to the amount of the lender's  loan  commitment
multiplied  by 0.05 and then  divided by the closing  price of a share of common
stock on the trading day immediately prior to the date of the lender's execution
of the loan  agreement.  This closing  price is also the  exercise  price of the
warrant.  In  addition,  at the time of each loan,  each  lender  was  granted a
warrant  for a number of shares of common  stock equal to the amount of the loan
multiplied  by 0.30 and then  divided by the closing  price of a share of common
stock  on the  trading  day  immediately  prior to date of  disbursement  of the
lender's loan. This closing price is also the exercise price of the warrant.  In
January 1999, the Company borrowed the remaining balance of $2,750,000 available
under the loan  agreement.  In  connection  with their  loans,  the lenders were
granted warrants to purchase, in the aggregate, 18,970 shares of common stock at
$14.50 per share,  43,551  shares of common stock at $15.50 per share and 59,092
shares of Common  Stock at $16.50  per share.  All of the loans  were  repaid in
March 1999.

         In connection with the Company's  acquisition of Med-Tech,  in December
1998,  the Company  assumed bank notes  payable  having an aggregate  balance of
$3,023,000 at December 31, 1998, with the National Bank of Canada.
The notes were paid in full in January 1999.

         In connection  with the Company's  acquisition of WSI, in October 1998,
the Company  acquired a number of notes payable  having an aggregate  balance of
$1,838,000 at December 31, 1998. These notes are  collateralized by vehicles and
equipment  and are due in  monthly  installments,  including  interest  at rates
ranging from 7% to 16.75% through 2002.

         In October  1998,  the Company  established  a new  $25,000,000  credit
facility at LaSalle National Bank in Chicago,  Illinois under a credit agreement
entered into by the Company,  its  subsidiaries,  and LaSalle National Bank, for
itself  and as  agent  for  other  lenders  who may  participate  in the  credit
agreement.  This new credit facility replaced the credit facility  previously in
place with Silicon Valley Bank. The new credit facility provides for a five-year
$5,000,000  revolving line of credit for working capital purposes and a one-year
$20,000,000 revolving line of credit for acquisition purposes. Upon the maturity
of this latter line of credit,  the  outstanding  balance,  if any, will convert
into  a  four-year  term  loan  repayable  in 16  equal  quarterly  payments  of
principal. If the principal amount of the term loan upon conversion is less than
$15,000,000,  however,  a further  one-year  line of credit in the amount of the
difference will be available for acquisition purposes,  and upon the maturity of
this further line of credit, the outstanding  balance, if any, will convert into
a three-year term loan repayable in 12 equal quarterly payments of principal.

         The Company's  borrowings  under its LaSalle Bank credit  facility bear
interest at either the Bank's prime rate plus .25% (8.00% at December 31, 1998),
or an adjusted  LIBOR rate (7.05% at December 31, 1998) as the Company elects at
the time of each borrowing.  The Company also pays a commitment fee of 0.25% per
annum on the  unborrowed  portion of the credit  facility.  Interest  is payable
quarterly  (or at the end of the  interest  period,  if the  Company  selects an
interest  period of less than three  months in the case of a  borrowing  bearing
interest at the adjusted LIBOR rate). As security for the Company's  borrowings,
the  Company  granted  the  bank a  security  interest  in all of the  Company's
tangible  and  intangible  assets and pledged  all of the  capital  stock of its
subsidiaries.  In addition,  the Company is required to maintain a minimum level
of net worth and comply with certain  restrictive  financial  covenants,  and is
restricted from paying dividends on its capital stock. At December 31, 1998, the
Company had borrowed  $16,386,000  under the credit facility.  In February 1999,
upon receipt of the proceeds from the Company's public offering of common stock,
all borrowings under the credit facility were repaid.

         In connection  with the Company's May 1997 purchase of ECCO's stock,  a
10-year  note for  $2,300,000  was  issued to the  owners  of ECCO.  The note is
payable in 10 equal annual  installments  due on May 1 of each year  starting in
1998. The note bears interest at the rate of 6.86% per annum.

         In  connection  with the  Company's  December  1996  purchase  of WMI's
medical waste business,  a note payable  totaling  $5,210,000 was issued to WMI.
The amount of the note was  subsequently  adjusted to $3,593,301  and was repaid
during 1997 and 1998.
         In 1994, a  non-interest  bearing note in the amount of $2,480,000  was
issued as part of the purchase of the net assets of Safe Way  Disposal  Systems,
Inc. As a result of the  Company's  initial  public  offering in August  1996, a


<PAGE>

portion of the note was  converted  into 98,001  shares of common  stock and the
remainder was paid in cash.

         During  1992,  the Company  entered into an  obligation  to finance the
development  of its  Woonsocket,  Rhode Island  facility.  The  development  and
purchase of substantially  all of the property and equipment for the Woonsocket,
Rhode Island  facility was financed from the issuance of industrial  development
revenue  bonds.  The  bonds are due in  various  amounts  through  2017 at fixed
interest  rates  ranging  from  6.3% to  7.375%  and are  collateralized  by the
property and equipment at the Woonsocket, Rhode Island facility. The terms of an
agreement  entered into in  connection  with the issuance of the bonds  contain,
among other provisions,  requirements for maintaining  defined levels of working
capital and various financial ratios including debt to net worth.

         Payments due on long-term debt during each of the five years subsequent
to  December  31,  1998,  including  capital  lease  obligations  and  excluding
borrowings  under the Company's  LaSalle National Bank credit facility and under
the  subordinated  loan agreement  with certain of its directors,  which amounts
were repaid in February 1999, are as follows:

                                                                  (IN THOUSANDS)


         1999................................................         $5,499
         2000................................................          1,262
         2001................................................            788
         2002................................................            445
         2003................................................            230

         The Company paid  interest of  $352,000,  $444,000 and $670,000 for the
fiscal years ended December 31, 1996, 1997 and 1998, respectively.

NOTE 7--LEASE COMMITMENTS

         The Company  leases  various  plant  equipment,  office  furniture  and
equipment,  motor vehicles and office and warehouse  space under operating lease
agreements  which expire at various dates over the next eight years.  The leases
for most of the properties contain renewal provisions.
         Rent expense for 1996,  1997 and 1998 was  $2,462,000,  $3,284,000  and
$3,508,000 respectively.

         Minimum future rental payments under  non-cancelable  operating  leases
that have  initial or  remaining  terms in excess of one year as of December 31,
1998 for each of the next five years and in the aggregate are as follows:

                                                                  (IN THOUSANDS)


         1999................................................     $      3,916
         2000................................................            3,052
         2001................................................            2,584
         2002................................................            1,915
         2003................................................            1,078
         Thereafter..........................................              895
                                                                  ------------
         Total minimum rental payments.......................     $     13,440
                                                                  ============


<PAGE>


NOTE 8--NET INCOME (LOSS) PER SHARE

         The following table sets forth the computation of basic and diluted net
income (loss) per share:

<TABLE>

                                                                                 YEAR ENDED DECEMBER 31,
                                                                                 -----------------------
                                                                        1996              1997               1998
                                                                        ----              ----               ----
                                                                      (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)


<S>                                                               <C>                <C>                <C>
Numerator:
Net income (loss)............................................     $        (2,389)   $          1,430   $         5,713
Denominator:
Denominator for basic earnings per
   share--weighted-average shares.............................            7,471,151         10,239,996        10,647,083
Effect of dilutive securities:
Employee stock options.......................................                   --            441,586           473,723
Warrants ....................................................                   --             84,534           142,722
                                                                  ----------------   ----------------   ---------------
Dilutive potential common shares.............................                   --            526,120           616,445
Denominator for diluted earnings per share--adjusted
   weighted average shares and assumed conversions...........            7,451,151         10,766,116        11,263,528
                                                                  ================   ================   ===============
Basic net income (loss) per share............................     $         (0.32)   $           0.14   $          0.54
                                                                  ===============    ================   ===============
Diluted net income (loss) per share..........................     $         (0.32)   $           0.13   $          0.51
                                                                  ===============    ================   ===============

</TABLE>

         For additional information regarding outstanding employee stock options
and outstanding warrants, see Note 9.

         Options to purchase  838,849  shares of common  stock were  outstanding
during 1996 at exercise prices ranging from  $.53-$69.02,  but were not included
in the  computation of diluted  earnings per share because the Company had a net
loss in 1996 and the effect would be antidilutive. In 1997 and 1998, options and
warrants to purchase 75,945 shares and 67,615 shares, respectively,  at exercise
prices of $10.25-$69.02 and  $15.50-$69.02,  respectively,  were not included in
the  computation  of diluted  earnings  per share  because  the effect  would be
antidilutive.  In 1999, the Company issued 3,500,000 shares of common stock upon
completion  of its February 5, 1999 public  offering and 59,157 shares of common
stock in payment for certain acquisitions.

NOTE 9--STOCK OPTIONS AND WARRANTS

         Shares of the  Company's  common stock have been  reserved for issuance
upon the exercise of options and  warrants.  These shares have been  reserved as
follows at December 31, 1998:

         1995 Plan options..................................           242,763
         1996 Directors Plan options........................           152,345
         1997 Plan options..................................           550,862
         Warrants...........................................           268,481
                                                                 -------------
         Total shares reserved..............................         1,214,451
                                                                 =============

STOCK OPTIONS

         In 1995, the Company's Board of Directors and shareholders  approved an
incentive compensation plan (the "1995 Plan"), which, as amended and restated in
1996,  provides for the granting of 1,500,000 shares of common stock in the form
of stock  options and  restricted  stock to employees,  officers,  directors and
consultants of the Company. The exercise price of options granted under the 1995
Plan must be at least equal to the fair market  value of the common stock on the
date of grant.  All  options  granted to date have  10-year  terms and vest over
periods of up to four years after the date of grant.

         In 1997, the Company's Board of Directors and shareholders approved the
1997 Stock  Option Plan (the "1997  Plan"),  which  provides for the granting of
1,500,000  shares  of  common  stock in the form of stock  options  to  selected
officers,  directors  and  employees  of the Company and its  subsidiaries.  The

<PAGE>


exercise price of options  granted under the 1997 Plan must be at least equal to
the fair  market  value of the common  stock on the date of grant.  All  options
granted to date have 10-year  terms and vest over periods of up to 5 years after
the date of grant.

         In June 1996,  the  Company's  Board of  Directors  adopted and in July
1996, the Company's  shareholders approved, the Directors Stock Option Plan. The
plan  authorizes  stock options for a total of 285,000 shares of common stock to
be granted to eligible directors of the Company, consisting of directors who are
neither officers nor employees of the Company.  As of each annual meeting of the
Company's shareholders,  each incumbent eligible director who is re-elected as a
director at the annual meeting automatically receives an option grant based on a
predetermined  formula.  The  exercise  price of each option will be the closing
price on the date of grant.  The term of each  option is six years from the date
of grant,  and each option vests in 16 equal quarterly  installments  and may be
exercised only when it is vested and only while the holder of the option remains
a director of the Company or during the 90-day period following the date that he
or she ceases to serve as a director.

         A summary of stock option information follows:

<TABLE>

                                                       1996                      1997                      1998
                                                       ----                      ----                      ----
                                                            WEIGHTED                 WEIGHTED                  WEIGHTED
                                                             AVERAGE                  AVERAGE                   AVERAGE
                                                            EXERCISE                 EXERCISE                  EXERCISE
                                                   SHARES     PRICE        SHARES      PRICE         SHARES      PRICE
                                                   ------     -----        ------      -----         ------      -----


<S>                                               <C>       <C>             <C>        <C>            <C>        <C>
Outstanding at beginning of year............      933,235   $  0.62         537,166    $ 1.93         845,861    $  4.98
   Granted..................................      279,053   $  3.20         433,367    $ 7.97         360,238    $ 13.92
   Exercised................................     (660,767)  $  0.59         (83,006)   $ 0.70        (155,979)   $  2.21
   Canceled/Forfeited.......................      (14,355)  $  3.42         (41,666)   $ 5.38        (104,150)   $  8.89
                                               ----------   -------   -------------    ------    ------------    -------
Outstanding at end of year..................      537,166   $  1.93         845,861    $ 4.98         945,970    $  8.37
                                               ==========   =======   =============    ======    ============    =======
Exercisable at end of year..................      315,273   $  0.81         326,119    $ 1.53         393,084    $  5.37
Available for future grant..................      592,004                 1,700,303                 1,434,821

</TABLE>

         Options  outstanding  and  exercisable as of December 31, 1998 by price
range:

<TABLE>

                                                             OUTSTANDING                              EXERCISABLE
                                                             -----------                              -----------
                                                              WEIGHTED        WEIGHTED                          WEIGHTED
                                                               AVERAGE         AVERAGE                           AVERAGE
                                                              REMAINING       EXERCISE                          EXERCISE
RANGE OF EXERCISE PRICES                        SHARES       LIFE IN YRS        PRICE              SHARES         PRICE
- ------------------------                        ------       -----------        -----              ------         -----


<S>                                                  <C>          <C>       <C>                    <C>        <C>
$.53-$1.99..................................         238,314      7.08      $       1.14           201,578    $     0.98
$5.84-$10.25................................         384,292      7.29      $       8.18           135,438    $     8.29
$11.125-$18.125.............................         323,364      8.51      $      13.94            56,068    $    14.11
                                               -------------                                 -------------
                                                     945,970                                       393,084
                                               =============                                 =============
</TABLE>

The Company has elected to follow  Accounting  Principles  Board Opinion No. 25,
"Accounting   for  Stock   Issued  to   Employees"   ("APB   25")  and   related
interpretations  in  accounting  for its  employee  stock  options  because,  as
discussed  below,  the  alternative  fair value  accounting  provided  for under
Statement of Financial Accounting Standards No. 123, "Accounting for Stock-Based
Compensation" ("FAS 123"), requires the use of option valuation models that were
not developed for use in valuing  employee stock options.  Under APB 25, because
the exercise  price of the Company's  employee  stock options  approximates  the
market  price of the  underlying  stock on the date of  grant,  no  compensation
expense is recognized.

         Pro forma information regarding net income (loss) and net income (loss)
per  share  is  required  by FAS 123 as if the  Company  has  accounted  for its
employee  stock options  granted  subsequent to December 31, 1994 under the fair
value  method of that  statement.  Options  granted in 1997 and 1998 were valued
using the Black-Scholes  option pricing model. Options granted in 1996 and 1995,
as a  non-public  company,  were valued  using the  minimum  value  method.  The
following  assumptions were used in 1996, 1997 and 1998:  expected volatility of
zero in 1996,  0.50 in 1997 and 0.61 in 1998;  risk-free  interest rates ranging
from  5.1% to 6.7% in 1996,  5.9% to 6.8% in 1997  and  4.5% to 4.8% in 1998;  a
dividend yield of 0%; and a  weighted-average  expected life of the option of 31

<PAGE>


months in 1996, 72 months in 1997 and 1998. The weighted-average  fair values of
options granted during 1996, 1997 and 1998 were $0.79 per share, $4.48 per share
and $6.52 per share, respectively.

         Option value models require the input of highly subjective assumptions.
Because the Company's employee stock options have characteristics  significantly
different from those of traded  options,  and because  changes in the subjective
input assumptions can materially affect the fair value estimate, in management's
opinion,  the existing  method does not  necessarily  provide a reliable  single
measure of the fair value of its employee stock options.

         For purposes of pro forma disclosures,  the estimated fair value of the
options is amortized to expense over the option  vesting  period.  The Company's
pro forma information follows (in thousands, except for per share information):

<TABLE>

                                                                                  YEAR ENDED DECEMBER 31,
                                                                                  -----------------------
                                                                     1996                  1997                  1998
                                                                     ----                  ----                  ----


<S>                                                               <C>                    <C>                 <C>
Pro forma net income (loss)..................................     $    (2,474)           $  1,112            $    4,485
Pro forma net income (loss) per share........................     $     (0.33)           $   0.10            $     0.40

</TABLE>

         The pro forma effect in 1996,  1997 and 1998 is not  representative  of
the pro forma effect in future years as the pro forma  disclosures  reflect only
the fair value of stock options granted subsequent to December 31, 1994.

WARRANTS

         The Company,  in connection with the issuance of preferred stock, which
was subsequently reclassified as common stock, issued warrants to purchase up to
6,773  shares of common  stock at an  exercise  price of $69.02  per  share.  At
December 31, 1998, all of these warrants were outstanding.  They expire in March
1999.

         During  1995,  several  of the  Company's  shareholders  and  directors
provided a bridge loan to the Company.  The loan totaled  $830,000 with interest
at the prime rate plus 3% and was  repaid.  In  addition  to the  interest,  the
lenders  received  warrants to purchase  220,559 shares of common stock at $1.59
per  share.  These  warrants  expire  on July 31,  2000.  In 1996,  the  lenders
exercised  warrants to purchase  166,749  shares.  In 1998, all of the remaining
warrants to purchase 53,810 shares were exercised.

         In May 1996, the Company obtained a $1,000,000 bridge loan from certain
shareholders,  directors and officers to provide  working capital and to finance
acquisitions. The bridge loan was repaid in August 1996. In connection with this
loan, the Company issued warrants to members of the lending group to purchase an
aggregate  of 226,036  shares of common  stock at $7.96 per share.  The warrants
expire in May 2001. In 1998,  warrants to purchase 35,940 shares were exercised.
At December 31, 1998, warrants to purchase 190,096 shares remained outstanding.

         In  December  1998,  the  Company  entered  into  a  subordinated  loan
agreement  with a group of  lenders  consisting  of six of the  Company's  seven
directors pursuant to which the lenders agreed to provide the Company with up to
$5,500,000 of short-term  financing upon the Company's request.  Under the terms
of the  subordinated  loan  agreement,  the lenders have been granted  five-year
warrants to purchase  shares of the Company's  Common Stock  exercisable  at any
time after the first  anniversary  of the grant date.  The closing  price of the
Company's  common stock on the dates of grant is also the exercise  price of the
warrant.  In December 1998 and January,  1999,  lenders were granted warrants to
purchase,  in the aggregate,  18,970 shares of common stock at $14.50 per share,
43,551  shares of common  stock at $15.50 per share and 59,092  shares of common
stock at $16.50 per share.

NOTE 10--EMPLOYEE STOCK PURCHASE PLAN

         Under a plan for 1997 approved by the Board of Directors,  employees of
Stericycle  can  purchase  shares of common stock at a market  price.  Under the
terms of the plan, employees were allowed to purchase shares throughout the year
and pay for the stock through salary deduction.  Employees elected to purchase a
total of 2,905 shares under this plan in 1998.


<PAGE>


NOTE 11--EMPLOYEE BENEFIT PLAN

         The Company has a 401(k) defined  contribution  retirement savings plan
covering  substantially all employees of the Company. Each participant may elect
to defer a portion of his or her  compensation  subject to certain  limitations.
The Company may match up to 30% of the first $1,000  contributed  to the plan by
each  employee.  The Company's  contributions  for the years ended  December 31,
1996,  1997  and  1998  were   approximately   $14,000,   $25,000  and  $10,000,
respectively.

NOTE 12--RELATED PARTIES

         In  February   1998,   the  Company   announced  the  formation  of  an
international  joint venture company called Medam S.A. de C.V.,  ("Medam") which
utilizes   Stericycle's   proprietary   Electro-Thermal   Deactivation   ("ETD")
technology  to treat  medical and  infectious  waste in the Mexico City  market.
Stericycle's  partners in the joint venture are  Controladora  Ambiental S.A. de
C.V.  ("Contam"),  headquartered  in Mexico City and Pennoni  Associates,  Inc.,
headquartered  in  Philadelphia,  Pennsylvania.  The  Company  owns 24.5% of the
common stock of Medam.  At December 31, 1998, the Company had made $1,164,000 in
capital  contributions.  In  1998  the  Company  sold  to  Medam  $1,202,000  of
proprietary  equipment and earned  technology  license fees of  $1,060,000.  The
Company's  investment  in Medam is accounted  for under the equity method and is
included in other  non-current  assets in the Consolidated  Balance Sheets.  The
Company's share of the results of operations of Medam in 1998 was not material.

NOTE 13--LEGAL PROCEEDINGS

         The Company operates in a highly  regulated  industry and is exposed to
regulatory inquiries or investigations from time to time.  Investigations can be
initiated  for a variety of reasons.  The  Company has been  involved in several
legal  and  administrative  proceedings  that  have been  settled  or  otherwise
resolved on terms  acceptable to the Company,  without having a material adverse
effect on the Company's business,  financial condition or results of operations.
From time to time,  the Company may  consider it more  cost-effective  to settle
such   proceedings   than  to  involve  itself  in  costly  and   time-consuming
administrative  actions or  litigation.  The  Company is also a party to various
legal  proceedings  arising in the ordinary course of its business.  The Company
believes  that the  resolution  of these other  matters will not have a material
adverse  effect on the  Company's  business,  financial  condition or results of
operations.

NOTE 14--SUBSEQUENT EVENTS

         In the first quarter of 1999, the Company  completed six  acquisitions.
In January 1999,  the Company  purchased the customer  lists and selected  other
assets of Environmental Transloading Services, Inc., in Los Angeles, California,
and Medical Resources Corporation,  in Farmington, New Mexico. In February 1999,
the Company  purchased the customer  lists and selected  other assets of Medical
Resource Recycling  Systems,  Inc., in Spokane,  Washington,  Southwest Medecol,
L.C., in Amarillo,  Texas, and Medical Express & General Courier Service,  Inc.,
in Pittsburgh,  Pennsylvania.  In March 1999, the Company purchased the customer
list and selected other assets of Enviro-Tech  Disposal, a division of Lancaster
General Service Business Trust, in Lancaster, Pennsylvania.

         The  aggregate   purchase   price  for  these  six   acquisitions   was
approximately  $3,825,000  (exclusive of liabilities  assumed in two cases),  of
which approximately  $2,550,000 was paid in cash,  approximately  $1,200,000 was
paid (or will be paid) by the  issuance  of  59,157  unregistered  shares of the
Company's  common  stock,  and $75,000 was paid by a  seven-month  interest-free
note. In addition, the Company assumed certain liabilities of two of the sellers
in the aggregate amount of approximately  $130,000.  In the case of three of the
acquisitions,  the  purchase  price is  subject  to a  downwards  adjustment  if
revenues from the customer  contracts  acquired do not reach  certain  specified
levels.



<PAGE>


NOTE 15--PRODUCTS AND SERVICES AND GEOGRAPHIC INFORMATION

         Summary revenue  information for the Company's products and services is
as follows:

<TABLE>

                                                                                  YEAR ENDED DECEMBER 31,
                                                                                  -----------------------
                                                                     1996                  1997                  1998
                                                                     ----                  ----                  ----
                                                                                      (IN THOUSANDS)

<S>                                                               <C>              <C>                   <C>
Medical waste management services............................     $     24,542     $       46,166        $       59,669
Proprietary equipment sales..................................               --                 --                 5,952
Technology license...........................................               --                 --                 1,060
                                                                  ------------     --------------        --------------
Total........................................................     $     24,542     $       46,166        $       66,681
                                                                  ============     ==============        ==============

</TABLE>

         Summary financial information by geographic area is as follows:
<TABLE>

                                                                                  YEAR ENDED DECEMBER 31,
                                                                                  -----------------------
                                                                     1996                  1997                  1998
                                                                     ----                  ----                  ----
                                                                                      (IN THOUSANDS)


<S>                                                               <C>              <C>                   <C>
Revenues:
   United States.............................................     $     24,542     $       46,166        $       59,206
   Canada....................................................               --                 --                   463
   Other foreign countries...................................               --                 --                 7,012
                                                                  ------------     --------------        --------------
Total    ....................................................     $     24,542     $       46,166        $       66,681
                                                                  ============     ==============        ==============

Long-lived assets:
   United States.............................................                      $       44,074        $       66,853
   Canada....................................................                                  --                 9,092
   Other foreign countries...................................                                  --                    --
                                                                                   --------------        --------------
Total    ....................................................                      $       44,074        $       75,945
                                                                                   ==============        ==============

</TABLE>

         Revenues  are  attributed  to  countries   based  on  the  location  of
customers.  In 1998, the Company provided  medical waste management  services to
customers in Canada and licensed and sold  proprietary  equipment to a Brazilian
company and to a joint venture in Mexico.  Additionally,  no individual customer
represents more than 10% of the Company's revenues.

NOTE 16--BROWNING FERRIS ACQUISITION AND FINANCING

         On November  12,  1999,  the  Company  issued  $125  million  aggregate
principal amount of Senior Subordinated Notes (the Notes) due November 15, 2009.
The Notes bear interest at 12.375% per annum,  payable  semi-annually in arrears
on November 15 and May 15, commencing May 15, 2000. Payments under the Notes are
unconditionally  guaranteed,  jointly and  severally,  on a senior  subordinated
basis by all of the Company's wholly-owned domestic subsidiaries,  which include
Environmental Control Company,  Inc., acquired in May 1997, Waste Systems, Inc.,
acquired October 1, 1998,  Med-Tech  Environmental,  Inc., acquired December 31,
1998,  and  certain  other  subsidiaries  which  have  insignificant  assets and
operations (collectively, the Guarantors). Simultaneously with the issuance, the
Company  entered  into a credit  agreement  (the New Credit  Facility)  with DLJ
Capital Funding,  Inc., Bank of America,  N.A., and Bankers Trust Company, which
will provide an aggregate  facility of $275  million,  consisting  of a six-year
revolving line of credit of $50 million, a six-year term loan A in the principal
amount of $75 million,  and a seven-year term loan B in the principal  amount of
$150 million.  Also simultaneous  with the issuance,  the Company issued for $75
million  a  new  class  of  convertible  preferred  stock  to  investment  funds
affiliated with Bain Capital, Inc. and Madison Dearborn Partners, Inc.

         On April 14,  1999,  the Company  entered into  agreements  with Allied
Waste Industries,  Inc. (Allied) to purchase all of the medical waste operations
of Allied and Browning-Ferris Industries, Inc. in the United States, Canada, and
Puerto  Rico for $410.5  million in cash,  subject to  post-closing  adjustment.
These transactions closed on November 12, 1999.


<PAGE>


         Financial information  concerning the Guarantors as of and for the year
ended  December 31, 1998 is presented  below for purposes of complying  with the
reporting  requirements of the Guarantors.  The financial information concerning
the Guarantors is being  presented  through  condensed  consolidating  financial
statements  since the  guarantees are full and  unconditional  and are joint and
several.   Guarantor  financial  statements  have  not  been  presented  because
management  does not believe  that such  financial  statements  are  material to
investors.

<TABLE>

                                       CONDENSED CONSOLIDATING BALANCE SHEET
                                                 DECEMBER 31, 1998
<CAPTION>

                                                                         NON-
                                                      GUARANTOR       GUARANTOR
                                    STERICYCLE, INC.  SUBSIDIARIES    SUBSIDIARIES    ELIMINATIONS    CONSOLIDATED
                                    --------------------------------------------------------------------------------
<S>                                      <C>          <C>             <C>          <C>                  <C>
ASSETS
Current assets:
   Cash and cash equivalents.....        $  1,590     $     173       $    (480)   $          -         $  1,283
   Other current assets..........          13,339        10,139           8,657         (11,608)          20,527
                                    --------------------------------------------------------------------------------
Total current assets.............          14,929        10,312           8,177         (11,608)          21,810
Property, plant and equipment, net
                                           11,569           788          10,727              16           23,100
Goodwill, net....................          29,065        14,246           6,016            (215)          49,112
Investment in subsidiaries.......          25,976         2,588               -         (28,564)               -
Other assets.....................           3,559             5             174              (5)           3,733
                                    ================================================================================
Total assets.....................         $85,098       $27,939         $25,094        $(40,376)         $97,755
                                    ================================================================================

LIABILITIES AND SHAREHOLDERS'
  EQUITY
   Current liabilities:
   Current portion of long-term debt     $  2,937    $       99        $  2,463    $          -         $  5,499
   Other current liabilities.....           7,255           925          18,395         (11,430)          15,145
                                    --------------------------------------------------------------------------------
Total current liabilities........          10,192         1,024          20,858         (11,430)          20,644
Long-term debt, net of current
   portion.......................          20,997             -           2,463               -           23,460
Shareholders' equity.............          53,909        26,915           1,773         (28,946)          53,651
                                    ================================================================================
Total liabilities and shareholders'
   equity........................         $85,098       $27,939         $25,094        $(40,376)         $97,755
                                    ================================================================================

</TABLE>

<PAGE>

<TABLE>

                                    CONDENSED CONSOLIDATING STATEMENT OF INCOME
                                           YEAR ENDED DECEMBER 31, 1998
<CAPTION>

                                                                         NON-
                                                      GUARANTOR       GUARANTOR
                                    STERICYCLE, INC.  SUBSIDIARIES    SUBSIDIARIES    ELIMINATIONS    CONSOLIDATED
                                    --------------------------------------------------------------------------------

<S>                                       <C>            <C>             <C>         <C>                <C>
Revenues.........................         $52,357        $9,598          $4,726      $        -         $66,681
Cost of revenues.................          35,194         6,334           3,800               -          45,328
Selling, general, and
   administrative expense........          12,789         1,408             732               -          14,929
                                    --------------------------------------------------------------------------------
Total costs and expenses.........          47,983         7,742           4,532               -          60,257
                                    --------------------------------------------------------------------------------
Income from operations...........           4,374         1,856             194               -           6,424
Equity in net income (loss) of
   subsidiaries..................           2,081          (106)              -           (1,975)             -
Other income (expense), net......            (244)          144              37               -             (63)
                                    --------------------------------------------------------------------------------
Income before income taxes.......           6,211         1,894             231          (1,975)          6,361
Income tax expense...............             498           150               -               -             648
                                    ================================================================================
Net income.......................        $  5,713      $  1,744          $  231         $(1,975)       $  5,713
                                    ================================================================================

</TABLE>


<PAGE>

<TABLE>

                                  CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
                                           YEAR ENDED DECEMBER 31, 1998
<CAPTION>

                                                                         NON-
                                                      GUARANTOR       GUARANTOR
                                    STERICYCLE, INC.  SUBSIDIARIES    SUBSIDIARIES    ELIMINATIONS    CONSOLIDATED
                                    --------------------------------------------------------------------------------

<S>                                      <C>             <C>             <C>         <C>               <C>
CASH FLOWS FROM OPERATING
   ACTIVITIES:
   Net cash provided by (used in)
     operating activities........        $  3,749        $  278          $  835      $        -        $  4,862
                                    --------------------------------------------------------------------------------

CASH FLOWS FROM INVESTING
   ACTIVITIES:
   Capital expenditures..........          (3,629)         (271)           (442)              -          (4,342)
   Payments for acquisitions, net
     of cash acquired............         (19,775)            -               -               -         (19,775)
   Purchases of short-term
     investments.................             (41)            -               -               -             (41)
   Proceeds from sale of property             395            10               -               -             405
                                    --------------------------------------------------------------------------------
Net cash used in investing
   activities....................         (23,050)         (261)           (442)         (1,894)        (23,753)
                                    --------------------------------------------------------------------------------

CASH FLOWS FROM FINANCING
   ACTIVITIES:
   Net proceeds from bank lines of
     credit......................          16,589             -            (203)              -          16,386
   Repayment of long term debt...          (2,513)           (6)           (670)              -          (3,189)
   Principal payments on capital
     lease obligations...........          (1,273)            -               -               -          (1,273)
   Proceeds from subordinated notes
                                            2,750             -               -               -           2,750
   Payment of deferred financing
     costs.......................            (218)            -               -               -            (218)
   Proceeds from issuance of common
     stock.......................             344             -               -               -             344
                                    --------------------------------------------------------------------------------
Net cash provided by (used in)
   financing activities..........          15,679            (6)           (873)              -          14,800
                                    --------------------------------------------------------------------------------
Net (decrease) increase in cash and
   cash equivalents..............       $  (3,622)        $  11         $  (480)           $  -          (4,091)
                                    ================================================================
Cash and cash equivalents at
   beginning of year.............                                                                         5,374
                                                                                                   -----------------
Cash and cash equivalents at end of
   year..........................                                                                      $  1,283
                                                                                                   =================


</TABLE>

<PAGE>



                                         STERICYCLE, INC. AND SUBSIDIARIES
<TABLE>

                           CONDENSED CONSOLIDATED BALANCE SHEET AS OF SEPTEMBER 30, 1999
                                  (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
<CAPTION>

                                                                                                     SEPTEMBER 30, 1999
                                                                                                     ------------------
                                                                                                           (UNAUDITED)
                                     ASSETS
<S>                                                                                                       <C>
Current assets:
   Cash and cash equivalents.....................................................................         $      16,017
   Short-term investments........................................................................                 1,583
   Accounts receivable, less allowance for doubtful accounts of $743.............................                18,553
   Other receivable..............................................................................                 1,679
   Parts and supplies............................................................................                 1,003
   Prepaid expenses..............................................................................                   808
   Other   ......................................................................................                 1,587
                                                                                                         --------------
      Total current assets.......................................................................                41,230
                                                                                                          -------------
Property, plant and equipment:
   Land    ......................................................................................                   725
   Buildings and improvements....................................................................                11,066
   Machinery and equipment.......................................................................                20,964
   Office equipment and furniture................................................................                 1,644
   Construction in progress......................................................................                   901
                                                                                                          -------------
                                                                                                                 35,300
Less accumulated depreciation....................................................................               (12,865)
                                                                                                          -------------
   Property, plant and equipment net.............................................................                22,435
                                                                                                          -------------
Other assets:
   Goodwill, less accumulated amortization of $5,461.............................................                59,524
   Other   ......................................................................................                 5,539
                                                                                                         --------------
      Total other assets.........................................................................                65,063
                                                                                                          -------------
        Total assets.............................................................................         $     128,728
                                                                                                          =============

                      LIABILITIES AND SHAREHOLDERS' EQUITY
Current liabilities:
   Current portion of long term debt.............................................................         $       1,900
   Accounts payable..............................................................................                 4,747
   Accrued liabilities...........................................................................                 6,213
   Deferred revenue..............................................................................                   178
                                                                                                          -------------
      Total current liabilities..................................................................                13,038
                                                                                                          -------------
Long-term debt, net of current portion...........................................................                 3,878
Shareholders' equity:
   Common stock (par value $.01 per share, 30,000,000 shares authorized,
      14,713,398 issued and outstanding).........................................................                   147
   Additional paid-in capital....................................................................               136,148
   Accumulated deficit...........................................................................               (24,483)
                                                                                                          -------------
      Total shareholders' equity.................................................................               111,812
                                                                                                          -------------
        Total liabilities and shareholders' equity...............................................         $     128,728
                                                                                                          =============

                         The  accompanying  notes are an integral  part of these financial statements.

</TABLE>

<PAGE>


                                       STERICYCLE, INC. AND SUBSIDIARIES
<TABLE>

                                    CONDENSED CONSOLIDATED STATEMENTS OF INCOME
                               FOR THE NINE MONTHS ENDED SEPTEMBER 30, 1998 AND 1999
                            (UNAUDITED, IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
<CAPTION>

                                                                                           NINE MONTHS ENDED SEPTEMBER 30,
                                                                                           -------------------------------
                                                                                             1998                  1999
                                                                                             ----                  ----


<S>                                                                                 <C>                      <C>
Revenues .....................................................................      $         44,759         $    74,285
Costs and expenses:
   Cost of revenues............................................................               30,492              48,998
   Selling, general and administrative expenses................................               10,151              15,541
                                                                                    ----------------    ----------------

      Total costs and expenses.................................................               40,643              64,539
                                                                                    ----------------    ----------------
Income from operations.........................................................                4,116               9,746
Other income (expense):
   Interest income.............................................................                  308                 576
   Interest expense............................................................                 (242)               (689)
   Other income................................................................                   20                 404
                                                                                    ----------------    ----------------
      Total other income (expense).............................................                   86                 291
                                                                                    ----------------    ----------------
Income before income taxes.....................................................     $          4,202    $         10,037
Income tax expense.............................................................                  781               2,168
                                                                                    ----------------    ----------------
Net income.....................................................................     $          3,421    $          7,869
                                                                                    ================    ================
Earnings per share--Basic.......................................................     $           0.32    $           0.56
                                                                                     ================    ================
Earnings per share--Diluted.....................................................     $           0.30    $           0.54
                                                                                     ================    ================
Weighted average number of common shares outstanding--Basic.....................           10,579,886          14,073,309
Weighted average number of common shares outstanding--Diluted...................           11,233,812          14,471,191

                         The  accompanying  notes are an integral  part of these financial statements.

</TABLE>

<PAGE>


                                         STERICYCLE, INC. AND SUBSIDIARIES
<TABLE>

                                  CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
                                   FOR THE NINE MONTHS ENDED SEPTEMBER 30, 1999
                                             (UNAUDITED, IN THOUSANDS)
<CAPTION>

                                                                                                     NINE MONTHS ENDED
                                                                                                       SEPTEMBER 30,
                                                                                                       -------------
                                                                                                  1998            1999
                                                                                                  ----            ----


<S>                                                                                          <C>             <C>
OPERATING ACTIVITIES:
Net Income..............................................................................     $     3,421     $    7,869
Adjustments to reconcile net income to net cash provided
   by operating activities:
   Depreciation and amortization........................................................           2,694          5,316
Changes in operating assets and liabilities, net of effect
   of acquisitions:
   Accounts receivable..................................................................            (541)        (1,864)
   Parts and supplies...................................................................            (365)           438
   Prepaid expenses.....................................................................             (88)           475
   Other assets.........................................................................          (1,632)        (2,393)
   Accounts payable.....................................................................              59         (1,755)
   Accrued liabilities..................................................................          (2,179)          (252)
   Deferred revenue.....................................................................             (23)        (2,000)
                                                                                             -----------     ----------
Net cash provided by operating activities...............................................           1,346          5,834
                                                                                             -----------     ----------
INVESTING ACTIVITIES:
   Payments for acquisitions and international investments,
      net of cash acquired..............................................................          (7,130)       (11,667)
   Proceeds from maturity of short-term investments.....................................              --            460
   Purchases of short term investments..................................................              --         (1,500)
   Capital expenditures.................................................................          (1,825)        (2,367)
                                                                                             -----------     ----------
Net cash used in investing activities...................................................          (8,955)       (15,074)
                                                                                             -----------     ----------
FINANCING ACTIVITIES:
   Net proceeds (payments) on line of credit............................................           4,075        (16,359)
   Proceeds from subordinated debt......................................................              --          2,750
   Repayment of subordinated debt.......................................................              --         (5,500)
   Repayment of long term debt..........................................................          (1,244)        (4,022)
   Payments of deferred financing costs.................................................              --            (40)
   Principal payments on capital lease obligations......................................            (116)          (154)
   Net proceeds from secondary public offering..........................................              --         47,158
   Proceeds from issuance of common stock...............................................             295            141
                                                                                             -----------     ----------
Net cash provided by financing activities...............................................           3,010         23,974
                                                                                             -----------     ----------
Net (decrease) increase in cash and cash equivalents....................................          (4,599)        14,734
Cash and cash equivalents at beginning of period........................................           5,374          1,283
                                                                                             -----------     ----------
Cash and cash equivalents at end of period..............................................     $       775     $   16,017
                                                                                             ===========     ==========
Non-cash activities:
   Net issuances of common stock for certain acquisitions
      and international investments.....................................................     $     1,807     $    2,993
   Net issuances of notes payable for certain acquisitions..............................     $       195     $      103


                    The  accompanying  notes  are  an  integral  part  of  these financial statements.

</TABLE>


<PAGE>


                        STERICYCLE, INC. AND SUBSIDIARIES

              NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

1.  BASIS OF PRESENTATION

         The accompanying  condensed consolidated financial statements have been
prepared  pursuant to the rules and  regulations  of the Securities and Exchange
Commission.  Certain information and footnote  disclosures  normally included in
annual consolidated  financial  statements prepared in accordance with generally
accepted  accounting  principles have been condensed or omitted pursuant to such
rules  and  regulations;  but  the  Company  believes  the  disclosures  in  the
accompanying  condensed  consolidated  financial statements are adequate to make
the  information  presented not  misleading.  In the opinion of management,  all
adjustments  necessary for a fair  presentation  for the periods  presented have
been  reflected  and  are  of  a  normal  recurring   nature.   These  condensed
consolidated  financial  statements  should  be read  in  conjunction  with  the
Company's  Consolidated  Financial  Statements  and notes  thereto for the three
years ended December 31, 1998,  included  herein.  The results of operations for
the nine-month period ended September 30, 1999 are not necessarily indicative of
the results that may be achieved for the entire year ending December 31, 1999.

2.  ACQUISITIONS

         During the nine months ended September 30, 1999, the Company  purchased
the  customer  lists and  selected  other  assets 13  medical  waste  management
businesses.   The  aggregate   purchase   price  for  these   acquisitions   was
approximately  $7,767,000,  of which $6,091,000 was paid in cash, $1,572,000 was
paid by the issuance of unregistered  shares of the Company's  common stock, and
$103,000 was paid by the issuance of promissory notes. In addition,  the Company
assumed certain liabilities of the sellers aggregating  approximately  $105,000.
In certain  cases,  the  purchase  price is subject to downwards  adjustment  if
revenues from customer contracts acquired do not reach certain specified levels.

       On  September  30,  1999,  the Company  purchased  an  additional  18.45%
ownership  in its Mexican  joint  venture from  Pennoni,  Inc.,  increasing  its
ownership  percentage to 49%. The purchase  price was immaterial and was paid by
the issuance of common stock.

3.  STOCK OPTIONS

         During the nine months ended  September  30, 1999,  options to purchase
common  stock  totaling  803,323  shares were  granted to key  employees.  These
options will vest  ratably  over a five year period and have an exercise  prices
ranging  from  $12.563 to 13.625 per share.  The grant of options was made under
the Company's 1997 Stock Option Plan,  which authorized the grant of options for
a total of 1,500,000 shares of the Company's common stock. The 1997 Stock Option
Plan was approved by the Company's stockholders in April 1997.

4.  STOCK ISSUANCES

         During the nine months ended  September  30, 1999,  options to purchase
130,826   shares  of  common  stock  were   exercised  at  prices  ranging  from
$.53-$13.625  per share.  The Company also issued 216,710 shares of common stock
in connection  with certain  acquisitions  and  international  investments  made
during the nine months ended  September  30, 1999.  In February 1999 the Company
issued  3,500,000  shares of common stock at a price to the public of $14.50 per
share in a public offering.

5.  INCOME TAXES

         Prior to 1997,  the  Company had  generated  net  operating  losses for
income tax purposes.  Any benefit  resulting from these net operating losses has
been offset by a valuation  allowance.  Annual  utilization of the Company's net
operating loss carryforward is limited by Internal Revenue Code Section 382. The
Company's  income tax expense reflects federal taxable income expected in excess
of the Section 382  limitation  and income taxes in states where the Company has
no offsetting net operating losses.


<PAGE>


6.  SUBSEQUENT EVENTS

         On November 12, 1999,  the Company  completed  its pending  acquisition
from Allied Waste  Industries,  Inc. (Allied) of the medical waste businesses of
both Allied and Browning-Ferris  Industries, Inc. (BFI) which Allied acquired in
July 1999.

         The purchase price for the Company's acquisition of BFI's medical waste
business was $410.5  million in cash.  The Company paid the purchase  price from
the  following  sources,  in  addition  to cash on hand:  (i) $225.0  million in
borrowings  under the term loan  facilities of a new senior credit facility that
the Company  established with DLJ Capital Funding,  Inc., Bank of America,  N.A.
and Bankers  Trust  Company;  (ii) $125.0  million in proceeds  from the sale of
12.375 senior  subordinated notes due 2009; and (iii) $75.0 in proceeds from the
issuance of new convertible  preferred stock to investment funds affiliated with
Bain Capital,  Inc. and Madison Dearborn Partners,  Inc. These transactions were
completed concurrently with completion of the Company's acquisition.

         The convertible preferred stock issued to the Bain and Madison Dearborn
funds accrues  dividends at the rate of 3.375% per annum,  payable in additional
shares of convertible  preferred  stock,  and are convertible  into common stock
based on the  liquidation  preference of the  convertible  preferred  stock at a
conversion  price of $17.50 per share.  Such stock also has voting  rights on an
as-if-converted  basis, with special class voting rights on certain matters, and
possesses  certain demand and piggyback  registration  rights.  The  convertible
preferred stock has a liquidation  preference over the Company's common stock in
an amount equal to the purchase price of the  convertible  preferred  stock plus
accumulated  and  accrued  dividends.  Pursuant  to an  agreement  with Bain and
Madison Dearborn,  the Company increased the size of its board of directors from
seven to nine members, and in November 1999, the Bain and Madison Dearborn funds
designated  John P.  Connaughton  and Thomas R. Reusche to serve as directors of
the Company.

7.  CONDENSED CONSOLIDATING FINANCIAL INFORMATION

         Payments under the Company's senior  subordinated notes (the Notes) are
unconditionally  guaranteed,  jointly  and  severally,  by all of the  Company's
wholly-owned domestic subsidiaries, which include Environmental Control Company,
Inc.,  acquired in May 1997, Waste Systems,  Inc., acquired October 1, 1998, and
Med-Tech  Environmental,  Inc.,  acquired  December  31, 1998 and certain  other
subsidiaries which have insignificant assets and operations  (collectively,  the
Guarantors).  Financial information  concerning the Guarantors as of and for the
nine month period ended  September  30, 1999 is presented  below for purposes of
complying  with the  reporting  requirements  of the  Guarantors.  The financial
information  concerning  the  Guarantors is being  presented  through  condensed
consolidating   financial   statements   since  the   guarantees  are  full  and
unconditional and are joint and several. Guarantor financial statements have not
been  presented  because   management  does  not  believe  that  such  financial
statements are material to investors.



<PAGE>

<TABLE>

                                       CONDENSED CONSOLIDATING BALANCE SHEET
                                                SEPTEMBER 30, 1999
<CAPTION>

                                                                         NON-
                                                      GUARANTOR       GUARANTOR
                                    STERICYCLE, INC.  SUBSIDIARIES    SUBSIDIARIES    ELIMINATIONS    CONSOLIDATED
                                    --------------------------------------------------------------------------------
<S>                                     <C>           <C>             <C>            <C>               <C>
ASSETS
Current assets:
   Cash and cash equivalents.....       $  15,086     $     393       $     435      $      103        $  16,017
   Other current assets..........          16,519        12,193          10,164         (13,663)          25,213
                                    --------------------------------------------------------------------------------
Total current assets.............          31,605        12,586          10,599         (13,560)          41,230
Property, plant and equipment, net
                                           11,959           652           9,824               -           22,435
Goodwill, net....................          38,494        13,982           6,964              84           59,524
Investment in subsidiaries.......          30,942         3,320               -         (34,262)               -
Other assets.....................           6,847          (194)             13          (1,127)           5,539
                                    ================================================================================
Total assets.....................        $119,847       $30,346         $27,400        $(48,865)        $128,728
                                    ================================================================================

LIABILITIES AND SHAREHOLDERS'
 EQUITY
Current liabilities:
   Current portion of long-term debt     $    317    $       81        $  1,502    $          -        $   1,900
   Other current liabilities.....           4,435           692          20,279         (14,268)          11,138
                                    --------------------------------------------------------------------------------
Total current liabilities........           4,752           773          21,781         (14,268)          13,038
Long-term debt, net of current
   portion.......................           3,178             -             700               -            3,878
Shareholders' equity.............         111,917        29,573           4,919         (34,597)         111,812
                                    ================================================================================
Total liabilities and shareholders'
   equity........................        $119,847       $30,346         $27,400        $(48,865)        $128,728
                                    ================================================================================

</TABLE>

<PAGE>

<TABLE>

                                    CONDENSED CONSOLIDATING STATEMENT OF INCOME
                                       NINE MONTHS ENDED SEPTEMBER 30, 1999
<CAPTION>

                                                                         NON-
                                                      GUARANTOR       GUARANTOR
                                    STERICYCLE, INC.  SUBSIDIARIES    SUBSIDIARIES    ELIMINATIONS    CONSOLIDATED
                                    --------------------------------------------------------------------------------

<S>                                       <C>            <C>            <C>              <C>            <C>
Revenues.........................         $47,945        $9,135         $17,569          $(364)         $74,285
Cost of revenues.................          29,904         5,820          13,638           (364)          48,998
Selling, general, and
   administrative expense........          10,772         1,758           3,011              -           15,541
                                    --------------------------------------------------------------------------------
Total costs and expenses.........          40,676         7,578          16,649           (364)          64,539
                                    --------------------------------------------------------------------------------
Income from operations...........           7,269         1,557             920              -            9,746
Equity in net income of subsidiaries
                                            2,608           732               -         (3,340)               -
Other income (expense), net......              53           431            (193)             -              291
                                    --------------------------------------------------------------------------------
Income before income taxes.......           9,930         2,720             727         (3,340)          10,037
Income tax expense...............           2,061           107               -              -            2,168
                                    ================================================================================
Net income.......................        $  7,869        $2,613        $    727        $(3,340)        $  7,869
                                    ================================================================================

</TABLE>


<PAGE>

<TABLE>

                                  CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
                                       NINE MONTHS ENDED SEPTEMBER 30, 1999
<CAPTION>

                                                                         NON-
                                                      GUARANTOR       GUARANTOR
                                    STERICYCLE, INC.  SUBSIDIARIES    SUBSIDIARIES    ELIMINATIONS    CONSOLIDATED
                                    --------------------------------------------------------------------------------

<S>                                         <C>            <C>           <C>          <C>                <C>
CASH FLOWS FROM OPERATING
   ACTIVITIES:
   Net cash provided by (used in)
     operating activities........           $(895)         $238          $6,409       $      82          $5,834
                                    --------------------------------------------------------------------------------

CASH FLOWS FROM INVESTING
   ACTIVITIES:
   Capital expenditures..........          (2,254)            -            (129)             16          (2,367)
   Payments for acquisitions, net
     of cash acquired............         (11,667)            -               -               -         (11,667)
   Proceeds from sale of short-term
     investments.................             460             -               -               -             460
   Purchases of short-term
     investments.................               -             -          (1,500)              -          (1,500)
                                    --------------------------------------------------------------------------------
Net cash used in investing
   activities....................         (13,461)            -          (1,629)             16         (15,074)
                                    --------------------------------------------------------------------------------

CASH FLOWS FROM FINANCING
   ACTIVITIES:
   Net payments on bank lines of
     credit......................         (16,359)            -               -               -         (16,359)
   Repayment of long term debt...            (262)            -          (3,760)              -          (4,022)
   Principal payments on capital
     lease obligations...........             (36)          (18)           (100)              -            (154)
   Proceeds from subordinated notes
                                            2,750             -               -               -           2,750
   Payments on subordinated notes
                                           (5,500)            -               -               -          (5,500)
   Payment of deferred financing
     costs.......................             (40)            -               -               -             (40)
   Net proceeds from secondary
     public offering.............          47,158             -               -               -          47,158
   Proceeds from issuance of common
     stock.......................             141             -              (5)              5             141
                                    --------------------------------------------------------------------------------
Net cash provided by (used in)
   financing activities..........          27,852           (18)         (3,865)              5          23,974
                                    --------------------------------------------------------------------------------
Net increase in cash and cash
   equivalents...................          13,496           220             915             103          14,734
                                    ================================================================
Cash and cash equivalents at
   beginning of year.............                                                                         1,283
                                                                                                   -----------------
Cash and cash equivalents at end of
   year..........................                                                                     $  16,017
                                                                                                   =================


</TABLE>


<PAGE>


                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS

To the Board of Directors of
Stericycle, Inc.:

         We have audited the  accompanying  statements of directly  identifiable
assets  and  liabilities  of  the  Medical  Waste  Business  of  Browning-Ferris
Industries,  Inc., a Delaware  corporation  ("BFI Medical Waste" as described in
Note 1), as of  September  30,  1998 and 1997,  and the  related  statements  of
revenues and direct expenses of BFI Medical Waste for each of the three years in
the  period  ended  September  30,  1998.  These  financial  statements  are the
responsibility  of management of BFI Medical  Waste.  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.

         The  financial  statements  have  been  prepared  for  the  purpose  of
complying  with  the  rules  and  regulations  of the  Securities  and  Exchange
Commission  as  described  in Note 3,  and are  not  intended  to be a  complete
presentation of BFI Medical Waste's financial  position as of September 30, 1998
and 1997,  and the results of its  operations and its cash flows for each of the
three years in the period ended September 30, 1998.

         In our opinion,  the  financial  statements  referred to above  present
fairly,  in  all  material  respects,   the  directly  identifiable  assets  and
liabilities  of BFI Medical  Waste as of  September  30, 1998 and 1997,  and its
revenues  and direct  expenses  for each of the three years in the period  ended
September 30, 1998, in conformity with generally accepted accounting principles.

                               ARTHUR ANDERSEN LLP

Chicago, Illinois
July 30, 1999



<PAGE>


                                         BROWNING-FERRIS INDUSTRIES, INC.
                                              MEDICAL WASTE BUSINESS
<TABLE>

                            STATEMENTS OF DIRECTLY IDENTIFIABLE ASSETS AND LIABILITIES
                                AS OF SEPTEMBER 30, 1997 AND 1998 AND JUNE 30, 1999
                                                   IN THOUSANDS)
<CAPTION>

                                                                                                             AS OF
                                                                            AS OF SEPTEMBER 30,             JUNE 30,
                                                                            -------------------             --------
                                                                         1997               1998             1999
                                                                         ----               ----             ----

                                                                                                        (UNAUDITED)
<S>                                                                <C>                 <C>               <C>
DIRECTLY IDENTIFIABLE ASSETS:
Accounts Receivable, net of Allowance for
   Doubtful Accounts of $840, $904, and
   $1,040 as of September 30, 1997 and
   1998 and June 30, 1999................................          $        15,356     $      16,300     $       16,552
Parts and Supplies.......................................                    1,456             1,435              1,393
Prepaid Expenses.........................................                      317               181                207
                                                                   ---------------     -------------     --------------
      Total Current Assets...............................                   17,129            17,916             18,152
                                                                   ---------------     -------------     --------------
Property, Plant and Equipment
   Land..................................................                    3,014             2,951              3,308
   Buildings and Improvements............................                   34,108            36,181             37,134
   Machinery and Equipment...............................                  104,771           102,972            105,744
   Office Furniture and Equipment........................                    2,139             1,878              2,228
   Construction in Progress..............................                       --               141                204
                                                                   ---------------     -------------     --------------
                                                                           144,032           144,123            148,618
   Accumulated Depreciation..............................                  (81,367)          (83,999)           (88,070)
                                                                   ---------------     -------------     --------------
   Property, Plant and Equipment, net....................                   62,665            60,124             60,548
Intangibles, net of Accumulated Amortization
   of $20,064, $22,781 and $24,988 as
   of September 30, 1997 and 1998 and
   June 30, 1999.........................................                   49,709            47,592             56,161
                                                                   ---------------     -------------     --------------
Total Directly Identifiable Assets.......................          $       129,503     $     125,632     $      134,861
DIRECTLY IDENTIFIABLE LIABILITIES:
Compensation Accruals....................................          $         1,875     $       2,168     $        1,969
Other Accrued Liabilities................................                    1,752               259              1,229
Current Portion of Capital Lease Obligation..............                      370               669                970
                                                                   ---------------     -------------     --------------
      Total Current Liabilities..........................                    3,997             3,096              4,168
                                                                   ---------------     -------------     --------------
Capital Lease Obligation, net of
   current portion.......................................                    1,396             2,346              4,162
Other Long-Term Liabilities..............................                    2,391             2,223                938
                                                                   ---------------     -------------     --------------
   Total Long-Term Liabilities...........................                    3,787             4,569              5,100
                                                                   ---------------     -------------     --------------
      Total Directly Identifiable Liabilities............                    7,784             7,665              9,268
                                                                   ---------------     -------------     --------------
Total Directly Identifiable Assets in
   Excess of Directly Identifiable Liabilities...........          $       121,719     $     117,967     $      125,593
                                                                   ===============     =============     ==============




                    The  accompanying  notes  are  an  integral  part  of  these Financial Statements.

</TABLE>



<PAGE>


                                         BROWNING-FERRIS INDUSTRIES, INC.
                                              MEDICAL WASTE BUSINESS
<TABLE>

                                    STATEMENTS OF REVENUES AND DIRECT EXPENSES
                                 FOR THE YEARS ENDED SEPTEMBER 30, 1996, 1997 AND
                            1998 AND FOR THE NINE MONTHS ENDED JUNE 30, 1998 AND 1999
                                                  (IN THOUSANDS)
<CAPTION>

                                                                                                 NINE MONTHS ENDED
                                                 YEAR ENDED SEPTEMBER 30,                            JUNE 30,
                                                 ------------------------                            --------
                                            1996           1997             1998              1998              1999
                                            ----           ----             ----              ----              ----
                                                                                                     (UNAUDITED)


<S>                                     <C>            <C>            <C>              <C>                <C>
Revenues......................          $   199,886    $   199,060    $     198,222    $      148,837     $     152,266
Cost of Revenues:
Direct Operating Costs........              123,801        124,156          121,096            90,460            91,568
Depreciation..................               16,681         13,844           11,533             8,946             8,263
                                        -----------    -----------    -------------    --------------     -------------
      Total Cost of Revenues..              140,482        138,000          132,629            99,406            99,831
Other Expenses:
Selling, General and
  Administrative..............               19,051         17,465            9,834             6,358             6,077
Depreciation and
  Amortization................                3,417          3,483            3,439             2,579             2,747
Special Charge (Credit).......                9,236          4,500              257               257              (469)
                                        -----------    -----------    -------------    --------------     -------------
      Total Other Expenses....               31,704         25,448           13,530             9,194             8,355
                                        -----------    -----------    -------------    --------------     -------------
Revenues in excess of
  Direct Expenses.............          $    27,700    $    35,612    $      52,063    $       40,237     $      44,080







                    The  accompanying  notes  are  an  integral  part  of  these Financial Statements.

</TABLE>

<PAGE>


                        BROWNING-FERRIS INDUSTRIES, INC.
                             MEDICAL WASTE BUSINESS

                          NOTES TO FINANCIAL STATEMENTS

1.  BUSINESS DESCRIPTION

         The  accompanying  financial  statements  include  certain  assets  and
liabilities  and revenues and direct  expenses of the Medical Waste  Business of
Browning-Ferris   Industries,  Inc.  ("BFI  Medical  Waste").  For  the  periods
presented  herein,  BFI  Medical  Waste  is a  service  line of  Browning-Ferris
Industries,  Inc. ("BFI"),  a Delaware  corporation.  BFI Medical Waste provides
medical waste collection,  transportation,  treatment,  and disposal services to
hospitals,  healthcare providers and other small account customers in the United
States, Canada, and Puerto Rico.

2.  DESCRIPTION OF ACQUISITION

         On April 14, 1999,  Stericycle  entered into purchase  agreements  with
Allied Waste  Industries,  Inc.  ("Allied"),  pursuant to which  Stericycle will
acquire all of the medical waste operations of BFI in the United States, Canada,
and Puerto Rico.  The purchase  price for these  operations is $410.5 million in
cash, subject to post-closing  adjustment.  As of July 30, 1999, concurrent with
Allied's acquisition of BFI, BFI Medical Waste became a wholly-owned  subsidiary
of Allied.

         Under Stericycle's  purchase agreements with Allied,  Allied will cause
BFI to transfer all of the assets, as defined in the agreements,  used by BFI in
its United States,  Canada and Puerto Rico medical waste  operations,  which are
currently  held and  operated  with a variety  of other BFI  operations  by many
different  BFI   subsidiaries,   to  one  or  more   newly-formed   wholly-owned
subsidiaries.   At  closing,  Allied  will  sell  all  of  the  stock  of  these
newly-formed  subsidiaries to Stericycle for $410.5 million in cash,  subject to
closing  adjustments  as provided for in the purchase  agreements.  The purchase
agreements are subject to a number of conditions  including Stericycle obtaining
the  necessary  financing to fund the  acquisition  and the U.S.  Department  of
Justice ("DOJ") approval among other items. The purchase agreements also contain
clauses  regarding shared assets,  employee  benefits,  transition  services and
assumed liabilities, among other items.

3.  BASIS OF PRESENTATION

         BFI's  operating  organization is aligned along  functional  lines into
five  groups:  sales  and  marketing,  collection,   post-collection,   business
development and business  analysis.  As a result of this and other factors,  BFI
does not maintain  separate  books and records for its medical waste  operations
other than service  line  revenues and direct  operating  costs.  The basis upon
which these financial  statements have been prepared is described  further below
and in  Note 4. As a  result,  the  accompanying  financial  statements  are not
intended to be a complete presentation of the assets and liabilities and results
of  operations  and cash flows of BFI Medical  Waste.  Rather,  these  financial
statements were prepared for the purpose of complying with rules and regulations
of the Securities and Exchange Commission, which indicate that certain financial
statements  are required for BFI Medical  Waste.  All  significant  transactions
among BFI Medical  Waste units have been  eliminated.  Significant  transactions
with other BFI business units are disclosed in Note 9.

STATEMENTS OF DIRECTLY IDENTIFIABLE ASSETS AND LIABILITIES OF BFI MEDICAL WASTE

         Service line balance sheet information is not prepared by BFI. However,
certain  assets  and  liabilities,  which  are  specific  to the  medical  waste
operations,  are directly  identifiable.  Assets and liabilities included in the
accompanying   financial  statements  of  BFI  Medical  Waste  include  accounts
receivable, parts and supplies, prepaid expenses, property, plant and equipment,
intangibles,  compensation  accruals and other accruals  specifically related to
and identified with BFI Medical Waste.

         All treasury related activities including cash payments,  receipts, and
borrowings are performed by BFI's corporate  headquarters and are not separately
directly  identifiable with BFI Medical Waste. BFI does not separately  identify
intercompany  loans  receivable or payable  associated  with  different  service
lines.  Accordingly,  all treasury related assets and liabilities (cash and debt

<PAGE>


and the related interest income and expense) and  intercompany  loans receivable
and payable have been excluded from these financial statements.

         Accounts receivable  presented in the financial statements include only
those accounts  receivable  attributable to medical waste  operations  which are
identified  separately from other BFI  operations.  Accounts  receivable,  other
assets,  accounts  payable  and  accrued  liabilities,  that  are  not  directly
identifiable  to the  individual  service  lines  due to the fact  that they are
managed and accounted  for on a  consolidated  basis,  have not been included in
these financial statements.

         Property,  plant and equipment  included in the accompanying  financial
statements  include all assets and  related  accumulated  depreciation  that are
specific to BFI Medical  Waste.  Excluded  from the BFI Medical  Waste  specific
assets are shared operating facilities and administrative offices.

STATEMENTS OF REVENUES AND DIRECT EXPENSES OF BFI MEDICAL WASTE

         Revenues and direct cost of revenues for BFI's  medical  waste  service
line are  separately  accounted  for within BFI's  accounting  systems.  Cost of
revenues  (including certain  allocations)  include costs of vehicle drivers and
related  benefit  costs,  vehicle  operating  expenses,  processing  operations,
disposal  costs,  containers,  supplies  and certain  occupancy  costs.  Cost of
revenues also include an allocation for costs of shared facilities and employees
that can be attributed to BFI Medical Waste.  This allocation is generally based
on square footage and number of employees  attributable  to BFI Medical Waste at
these shared facilities.

         Direct selling, general and administrative expenses and special charges
(credits)  include  only those costs which are  incurred  solely for the medical
waste  operations  and are  separately  identified  as such in BFI's  accounting
records.  These  costs  include  payroll  costs  for  sales  and  administrative
employees  whose  function is to solely  support the medical waste  business and
general and administrative costs of medical waste only facilities. In connection
with the installation of new computer systems in January 1998,  certain selling,
general and  administrative  costs previously  identifiable  directly to medical
waste  operations  through  December  1997 were no longer  accounted for in this
manner.  Beginning in January  1998,  these costs were pooled with similar costs
related to BFI's  other  business  operations  by  marketplace  so that only the
selling,   general  and  administrative  costs  related  to  medical  waste-only
geographic  locations  could be  specifically  identified and charged to medical
waste in fiscal year 1998 and subsequent financial statements.

         Significant   additional   costs   related  to  selling,   general  and
administrative  ("SG&A")  efforts are performed by BFI on a corporate and shared
service basis. Such costs have been excluded from the statements of revenues and
direct  expenses of BFI Medical  Waste  because an  allocation of these costs in
accordance  with Staff  Accounting  Bulletin  No. 55 ("SAB No. 55") could not be
obtained  for the years  ended  September  30,  1996 and 1997.  Accordingly,  as
discussed above, the accompanying  financial statements are not intended to be a
complete presentation of the assets and liabilities and results of operations of
BFI Medical Waste.  This  allocation  could not be obtained due to the fact that
information flow at BFI was re-engineered which resulted in the consolidation of
several hundred administrative  locations into 26 administrative  locations.  In
addition,  many of the  employees  needed to assist  in the  preparation  of the
allocation of shared service  expenses for 1996 and 1997 are no longer  employed
by BFI.  However,  an  allocation of corporate  and shared  service  expense was
prepared  for the year ended  September  30, 1998 and for the nine months in the
periods  ended  June 30,  1998 and 1999,  respectively.  The  allocation  of BFI
corporate and shared  services  historical  costs were  determined in accordance
with Staff Accounting Bulletin No. 55 ("SAB No. 55"). These costs were allocated
by  BFI to  BFI  Medical  Waste  based  on  various  formulas  which  reasonably
approximate the actual costs incurred.




<PAGE>




         The incremental  increases in expenses recorded by BFI Medical Waste as
a result of these allocations were approximately:

<TABLE>

                                                                      YEAR ENDED                NINE MONTHS
                                                                SEPTEMBER 30,                 ENDED JUNE 30,
                                                                -------------                 --------------
                                                                      1998               1998                1999
                                                                      ----               ----                ----
                                                                                                (UNAUDITED)
<S>                                                          <C>                  <C>                 <C>
Approximate incremental increase
  in expenses as a result of
  allocations in accordance
  with SAB No. 55................................            $      17,090,000    $     13,861,000    $      13,298,000

</TABLE>

         Depreciated and amortization expense relates to the property, plant and
equipment and intangible  assets which are directly related to BFI Medical Waste
and included in the statements of directly identifiable assets and liabilities.

4.  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

NEW ACCOUNTING PRONOUNCEMENT

         In April 1998, Statement of Position No.  98-5--"Reporting on the Costs
of Start-Up Activities" ("SOP No. 98-5") was issued by the American Institute of
Certified  Public   Accountants.   The  statement  requires  costs  of  start-up
activities  and  organization   costs  to  be  expensed  as  incurred.   Initial
application of the statement,  which is effective for BFI Medical Waste's fiscal
year 2000,  is to be reported as a cumulative  effect of a change in  accounting
principle.  Management of BFI Medical Waste believes that the future adoption of
SOP No.  98-5 will not have a material  effect on its results of  operations  or
financial position.

REVENUE RECOGNITION

         For processing  activities,  BFI Medical Waste recognizes  revenue when
the treatment of the regulated  medical waste is completed at its  facilities or
the waste is shipped  off-site for  processing  and disposal.  For waste shipped
off-site,  all  associated  costs  are  recognized  at  time  of  shipment.  For
collection  activities,  BFI Medical  Waste  recognizes  revenue when  regulated
medical waste is collected from its customers.

ACCOUNTS RECEIVABLE

         The  financial   statements  include  only  those  accounts  receivable
directly  attributable to the medical waste operations.  Accounts  receivable at
certain  facilities  co-located  with other BFI  operations  are not  separately
directly  identifiable.  BFI Medical  Waste grants credit to the majority of its
customers on terms of up to 60 days.  It is not the policy of BFI Medical  Waste
to require  collateral from its customers in order to obtain credit.  Management
does not believe a significant credit risk exists as of June 30, 1999.

PARTS AND SUPPLIES

         Parts and supplies  consist of  containers  and vehicle and  processing
facility  replacement  parts and are  carried at the lower of cost  ("first  in,
first out") or market. The amounts presented in the financial statements reflect
parts and  supplies  at medical  waste only  operations.  Parts and  supplies at
facilities  co-located  with other BFI operations  are not  separately  directly
identifiable.

PREPAID EXPENSES

         Prepaid  expenses consist of prepaid  licenses,  insurance and permits.
The amounts  presented in the financial  statements  reflect prepaid expenses at
medical waste only operations.  Prepaid  expenses at facilities  co-located with
other BFI operations are not separately directly identifiable.


<PAGE>


PROPERTY, PLANT AND EQUIPMENT

         Property,  plant  and  equipment  is  recorded  at  cost.  Depreciation
expense,  which  includes the  depreciation  of assets  recorded  under  capital
leases,  is computed using the  straight-line  method over the estimated  useful
lives (or life of lease if shorter) of the assets as follows:

         ASSET DESCRIPTION                                           LIFE
         -----------------                                           ----


         Buildings and improvements                           10 to 30 years
         Machinery and equipment                              5 to 12 years
         Office furniture and equipment                       3 to 10 years

         Expenditures  for major renewals and  betterments  are  capitalized and
expenditures  for  maintenance  and repairs are charged to expense as  incurred.
During  fiscal years 1996,  1997 and 1998,  maintenance  and repairs  charged to
expense were $12,822,000, $13,388,000 and $12,745,000, respectively.

         When  property and  equipment is retired or otherwise  disposed of, the
related cost and accumulated  depreciation are removed from the accounts and any
resulting gain or loss is reflected in operating expenses.

INTANGIBLE ASSETS

         Goodwill is  amortized  using the  straight-line  method over 40 years.
Amortization   expense  for  1996,   1997  and  1998  related  to  goodwill  was
approximately $1,171,000, $1,208,000 and $1,207,000, respectively.

         Other directly  identifiable  intangible  assets,  substantially all of
which are customer  lists and  covenants  not to compete,  are  amortized on the
straight-line  method over their  estimated  lives,  which is no more than seven
years.  Amortization  expense related to other intangible assets was $1,772,000,
$1,783,000 and $1,510,000 in 1996, 1997 and 1998, respectively.

IMPAIRMENT OF LONG-LIVED ASSETS

         Long-lived assets are comprised  principally of property and equipment,
goodwill and other intangible assets.  BFI Medical Waste periodically  evaluates
whether  events and  circumstances  have  occurred  that  indicate the remaining
estimated  useful  lives of these  assets  should be  revised  or the  remaining
balances of these  assets are not  recoverable.  When factors  indicate  that an
evaluation should be performed for possible  impairment,  BFI Medical Waste uses
an  estimate  of the future  income  from  operations  of the  related  asset or
business as a measure of future recoverability of these assets.

INCOME TAXES

         Each of the different BFI subsidiaries  that currently hold and operate
BFI  Medical  Waste  also hold and  operate  various  other  operations  of BFI.
Accordingly,  BFI Medical  Waste is not a subsidiary.  Therefore,  in accordance
with Statement of Financial  Accounting Standard No. 109, "Accounting for Income
Taxes," income taxes are not included in the accompanying financial statements.

NEW PLANT DEVELOPMENT AND PERMITTING COSTS

         BFI Medical Waste expenses costs  associated  with the operation of new
plants prior to the commencement of services to customers.  Initial plant permit
costs  are  capitalized  as part  of  property,  plant,  and  equipment  and are
amortized using the straight-line method over their useful lives up to 25 years.
All ongoing permit costs are expensed.


<PAGE>


USE OF ESTIMATES

         The preparation of these financial  statements  required  management to
make estimates and assumptions  that affected the reported amounts of assets and
liabilities and disclosures of contingent  assets and liabilities at the date of
these  financial  statements  and the reported  amounts of revenues and expenses
during the reported periods. Actual results may differ from those estimates.

5.  INTERIM FINANCIAL STATEMENTS (UNAUDITED)

         The unaudited  statements of revenues and direct  expenses for the nine
months  ended June 30, 1998 and 1999,  and the  unaudited  statement of directly
identifiable assets and liabilities as of June 30, 1999, include, in the opinion
of management,  all adjustments  necessary to present fairly BFI Medical Waste's
directly  identifiable  assets and liabilities and revenues and direct expenses.
In the  opinion  of  management,  all  these  adjustments  are of a  normal  and
recurring nature.  Operating results for the interim periods are not necessarily
indicative of the results that may be expected for the fiscal year.

6.  SUPPLEMENTARY CASH FLOW INFORMATION

         As a service line of BFI, BFI Medical Waste does not maintain  separate
cash flow information.  Disbursements of BFI Medical Waste for payroll,  capital
projects,  operating supplies and operating expenses are processed and funded by
BFI through  centrally  managed  accounts.  In addition,  cash receipts from the
collection of accounts  receivable and the sales of assets are remitted directly
to bank  accounts  controlled  by BFI. In this type of  centrally  managed  cash
system in which the cash receipts and  disbursements of BFI's various  divisions
and service lines are commingled,  it is not feasible to segregate cash received
from BFI (e.g.,  financing for BFI Medical  Waste) from cash  transmitted to BFI
(e.g.,  distribution).  Accordingly,  a  statement  of cash  flows  has not been
prepared.

         Selected supplemental cash flow information for BFI Medical Waste is as
follows:

<TABLE>

                                                                                                  NINE       MONTHS
                                                                                                  ENDED
                                                    YEAR ENDED SEPTEMBER 30,                          JUNE 30,
                                                ----------------------------                          --------
                                              1996            1997              1998            1998           1999
                                              ----            ----              ----            ----           ----
                                                                                                      (UNAUDITED)
                                                                           (IN THOUSANDS)


<S>                                         <C>           <C>              <C>              <C>            <C>
Capital Expenditures.............           $    10,794   $       4,149    $       6,847    $      5,790   $      6,456
Depreciation and
  Amortization...................                20,098          17,327           14,972          11,525         11,010
Acquisition of
  Businesses.....................                 6,023             400            1,000             186         11,927

</TABLE>

7.  LEASE COMMITMENTS

         BFI Medical Waste leases various plant equipment,  office furniture and
equipment,  motor vehicles and office and warehouse space under lease agreements
which expire at various  dates over the next nine years.  The leases for most of
the properties contain renewal provisions.

         Rent expense for 1996,  1997 and 1998 was  $3,816,000,  $3,769,000  and
$3,526,000, respectively.




<PAGE>




         Minimum future rental  payments under  noncancellable  leases that have
initial or remaining  terms in excess of one year as of September 30, 1998,  for
each of the next five years and in the aggregate are as follows:

<TABLE>

                                                                                    CAPITALIZED       OPERATING
                                                                                 LEASES                LEASES
                                                                                 ------                ------
                                                                                          (IN THOUSANDS)


<S>                                                                           <C>                   <C>
1999.............................................................             $           994       $            1,215
2000.............................................................                         805                    1,179
2001.............................................................                         625                    1,091
2002.............................................................                         460                      965
2003.............................................................                         370                      811
Thereafter.......................................................                         514                    2,599
                                                                              ---------------       ------------------
Minimum rental payments..........................................             $         3,768       $            7,860
Less: Amount representing interest...............................                         753                       --
                                                                              ---------------       ------------------
Total minimum rental payments....................................             $         3,015       $            7,860
                                                                              ===============       ==================

                                                                                  1997                  1998
                                                                                  ----                  ----
                                                                                          (IN THOUSANDS)


Capital  lease  obligations,  primarily  trucks,
  trailers  and other  operating equipment,  weighted
  average interest rate of 6.6% for both 1997 and 1998 due
  in varying
  amounts through December 2008..................................             $         2,338       $            4,088
Capital lease obligations, primarily
  office equipment, weighted average interest
  rate of 8.06% and 7.05% for 1997 and 1998,
  respectively, due in varying amounts
  through September 2003.........................................                          55                       98
Accumulated Amortization.........................................                        (627)                  (1,171)
                                                                              ---------------       ------------------
  Total capital lease obligations................................             $         1,766       $            3,015
                                                                              ===============       ==================

</TABLE>

         Leases at  co-located  facilities  that benefit all  operations  at the
facility are not included in the above tables.

8.  EMPLOYEE BENEFIT PLAN

EMPLOYEE STOCK OWNERSHIP AND SAVINGS PLAN

         BFI  sponsors  an  employee  stock  ownership  and  savings  plan which
incorporates  deferred savings features permitted under IRS Code Section 401(k).
The plan  covers  substantially  all U.S.  employees  (including  Medical  Waste
employees)  with one or more  years of  service  except  for  certain  employees
subject  to  collective  bargaining  agreements.  Eligible  employees  may  make
voluntary  contributions  to one or more of six investment funds through payroll
deductions  which,  in turn,  will allow them to defer income for federal income
tax purposes.  BFI matches these voluntary  contributions at a rate of $0.50 per
$1.00 on the  first  5% of  total  earnings  contributed  by each  participating
employee. BFI matches the voluntary  contributions through open market purchases
or issuances of shares of BFI's common stock. BFI expenses its  contributions to
the employee  stock  ownership and savings plan.  Included in the  statements of
revenues and direct  expenses  are costs of $570,000,  $616,000 and $585,000 for
fiscal years 1996,  1997 and 1998,  respectively,  related to the employee stock
ownership and savings plan.  These  contribution  amounts were  allocated to BFI
Medical Waste based on the  percentage of total  payroll  method.  The costs are
included in costs of revenues or selling,  general,  and administrative  expense
based on the percentage of employees included in each expense type.



<PAGE>

EMPLOYEE RETIREMENT PLANS

         BFI and its domestic  subsidiaries have two defined benefit  retirement
plans covering  substantially  all U.S.  employees except for certain  employees
subject to collective  bargaining  agreements.  The benefits for these plans are
based on years of service and the employee's compensation. BFI's general funding
policy for these plans is to make annual  contributions to the plans equal to or
exceeding the actuary's recommended  contribution.  During the second quarter of
fiscal  1998,  BFI changed its method of  accounting  for  recognition  of value
changes in its  employee  retirement  plan for  purposes of  determining  annual
expense  under SFAS No.  87--"Employers'  Accounting  for  Pensions,"  effective
October 1, 1997. The impact of this accounting  change decreased pension expense
by $315,000 in 1998.  Included in the statements of revenues and direct expenses
are costs  (income) of $668,000,  $537,000 and  $(86,000) for fiscal years 1996,
1997 and 1998,  respectively,  related to the employee  retirement plans.  These
amounts were  allocated to BFI Medical  Waste based on the  percentage  of total
payroll method. The costs are included in costs of revenues or selling, general,
and administrative expense based on the percentage of employees included in each
expense type.  In  connection  with the  Stericycle  acquisition  of BFI Medical
Waste, the assets and liabilities of these plans remain with BFI.

OTHER POST-RETIREMENT BENEFITS

         BFI maintains an unfunded  post-retirement  benefit plan which provides
for  employees  participating  in its medical plan to receive a monthly  benefit
after  retirement  based  on years  of  service.  As  permitted  under  SFAS No.
106--"Employers'  Accounting for  Postretirement  Benefits Other Than Pensions,"
BFI chose to recognize  the  transition  obligation  over a 20 year period.  The
actuarially-determined   accumulated   postretirement   benefit  obligation  was
historically  amortized  over a 20 year period,  and the related  expense is not
material  to the  statement  of  revenues  and  direct  expenses  for any period
presented.

         During  the  fourth   quarter  of  fiscal  1998,   BFI  restricted  the
participation in its postretirement benefit plan to employees over the age of 55
with 10 years of experience and individuals already covered by the plan. The BFI
Medical Waste portion of the curtailment  gain is $465,000 and was recognized in
income in the fourth  quarter of fiscal 1998. In connection  with the Stericycle
acquisition of BFI Medical Waste, the assets and liabilities of this plan remain
with BFI.

9.  RELATED PARTY TRANSACTIONS

         Related-party  transactions  with BFI not  disclosed  elsewhere  in the
financial statements are as follows:

SHARED SERVICES

         BFI Medical  Waste shares  services of BFI  employees for such items as
sales and  marketing  and certain  general and  administrative  costs  including
accounting.  The cost of these shared  services is not  allocated to BFI Medical
Waste.

CORPORATE SERVICES

         BFI provides  certain support  services to BFI Medical Waste including,
but not limited to, legal,  accounting,  information systems, human resource and
business development and building services. The cost of these corporate services
is not allocated to BFI Medical Waste.

FINANCIAL ACCOMMODATIONS

         Letters  of credit and  performance  bonds  have been  provided  by BFI
Medical  Waste to customers  and various  states to support  facility  closures.
Total  letters of credit and  performance  bonds  outstanding  for this  purpose
aggregated approximately $1,084,000 as of June 30, 1999.


<PAGE>


         BFI  is  a  guarantor  and  is  jointly  responsible  for  the  various
performance  bonds issued on behalf of BFI Medical Waste.  The letters of credit
have been issued by BFI's financial institutions which are guaranteed by amounts
on deposit in BFI accounts. WASTE DISPOSAL SERVICES

         BFI provides  BFI Medical  Waste with waste  disposal  services for its
solid waste. Cost of revenues  includes,  $6,843,000,  $6,355,000 and $5,431,000
for the years ended  September 30, 1996,  1997,  and 1998,  respectively.  These
services  were  provided  by BFI to BFI  Medical  Waste  on a  basis  management
believes is consistent with third parties.

INSURANCE MATTERS

         BFI is  self-insured  for workers'  compensation,  auto  liability  and
general and comprehensive  liability claims.  Under its insurance programs,  BFI
generally has self-insured  retention limits ranging from $500,000 to $5,000,000
and has obtained  fully  insured  layers of coverage  above such  self-retention
limits. BFI provides for self-insurance costs based upon estimates provided by a
third-party  actuary.  The actuary  reviews  BFI's  actual  claims  activity and
estimates the ultimate exposure related to these aggregate claims.

         BFI Medical Waste was allocated approximately  $4,996,000,  $5,605,000,
and  $2,317,000  in  the  years  ended  September  30,  1996,  1997,  and  1998,
respectively, for insurance costs. Insurance premiums are allocated based on the
percent  of  BFI  Medical  Waste  revenues  to  total  BFI  revenues.   Directly
identifiable  BFI Medical Waste insurance claims are expensed at the plant level
for amounts up to $100,000 per claim.

10.  LEGAL PROCEEDINGS

         BFI  Medical  Waste  operates  in a highly  regulated  industry  and is
subject  to  regulatory   inquiries  or   investigations   from  time  to  time.
Investigations can be initiated for a variety of reasons.

         BFI  Medical  Waste is involved  in various  administrative  matters or
litigation,  including personal injury and other civil actions, as well as other
claims  and  disputes  that  could  result  in  additional  litigation  or other
adversary proceedings.

         While  the final  resolution  of any  matter  may have an impact on the
results of BFI  Medical  Waste for a  particular  reporting  period,  management
believes  that  the  ultimate  disposition  of  these  matters  will  not have a
materially  adverse effect upon the results of operations or financial  position
of BFI Medical Waste.

         On January 23, 1998, BFI was notified by the DOJ that it was the target
of a federal grand jury investigation regarding possible violations of the Clean
Water Act with respect to a BFI Medical Waste  facility  located in the District
of Columbia.  On May 29,  1998,  the DOJ and BFI filed a plea  agreement  styled
United States of America v.  Browning-Ferris Inc. in the U.S. District Court for
the District of Columbia.  On October 1, 1998,  judgment was entered pursuant to
which BFI pled guilty to three  violations  under the Clean Water Act and agreed
to pay $1,500,000 in fines and make a $100,000  community service  contribution.
All requirements of the judgment have been completed. In fiscal 1997 this amount
is  included  in  other  accrued   liabilities  in  the  statement  of  directly
identifiable  assets  and  liabilities  and as an expense  in the  statement  of
revenues and direct expenses.

         In July 1995,  BFI Medical Waste  acquired the assets of Metro New York
Health Waste  Processing,  Inc. which included a facility and incinerator in the
Bronx,  New  York.  BFI  Medical  Waste  undertook  extensive  retrofitting  and
improvements to the incinerator and its emissions  control equipment to meet the
compliance requirements of the two year permit issued by the New York Department
of  Environmental  Conservation  ("NYDEC").  In July of 1997,  BFI Medical Waste
voluntarily  suspended  operation of the incinerator and did not seek renewal of
its permit. In March of 1999, BFI Medical Waste executed an agreement with NYDEC
to dismantle the incinerator and its emissions  control  equipment,  pay a civil
penalty of $50,000, institute a pilot program for the use of natural gas powered
trucks  within  six  months of the date of the order and  establish  and fund an
Environmental  Benefit  Program for projects  benefiting  the  community and the


<PAGE>

environment in the amount of $200,000 to be paid within two years of the date of
the  agreement.  The agreement also allows BFI Medical Waste on an interim basis
to continue to operate its collection and transfer operation at the same site.

11.  SPECIAL CHARGES

         Special charges of $9,236,000 were reported in fiscal 1996. The charges
resulted from BFI Medical Waste's decision to divest certain  non-core  business
assets and close specific  facilities.  These  decisions were reached based on a
review of the non-core business assets and operations which were not expected to
achieve BFI Medical Waste's desired performance objectives. The special charges,
which included asset writedowns of $7,771,000 and related  liabilities  recorded
for certain  contractual  arrangements  of  $1,468,000,  do not consider  future
expenses  associated  principally with severance and relocation costs which will
occur as a result  of these  decisions.  The  results  of  operations  for these
non-core  business  assets were not  material to BFI Medical  Waste's  financial
statements.  During 1997,  BFI Medical Waste  divested or closed the majority of
these facilities,  with the remaining facilities divested or closed during 1998.
A total of $366,000 and $227,000 of the special charge liabilities were utilized
during 1997 and 1998, respectively.

         A special charge of $4,500,000 was reported in fiscal 1997. This charge
related to the closure of an  incinerator.  Except for the special  charge,  the
closure of the incinerator did not have a material effect on BFI Medical Waste's
financial   statements.   Of  the  special  charge,  a  $952,000  liability  was
established for the dismantlement of the incinerator. None of this liability was
utilized during 1998.

         A special charge of $257,000 was reported for 1998. This special charge
related  to  the  write-down  of an  additional  non-core  business  asset.  The
aggregate  total assets of this charge  represented  less than 1% of BFI Medical
Waste's total assets on a pre-special charge basis.

12.  BUSINESS COMBINATIONS

         During the fiscal year ended September 30, 1998, BFI Medical Waste paid
approximately  $1,000,000 to acquire three medical waste businesses,  which were
accounted for as purchases. During the fiscal years ended September 30, 1997 and
September  30,  1996,  BFI  Medical  Waste  paid   approximately   $400,000  and
$6,023,000,  respectively,  to  acquire  medical  waste  businesses,  which were
accounted for as purchases.  The results of these business  combinations are not
material  to the  operating  results or assets and  liabilities  of BFI  Medical
Waste.

13.  SUBSEQUENT EVENTS--BUSINESS COMBINATIONS (UNAUDITED)

         In April 1999, BFI Medical Waste acquired, as a result of an asset swap
transaction between BFI and Allied Waste Industries,  Inc., all of the assets of
Medical  Disposal  Services for cash and other  consideration  of  approximately
$7,123,000 and certain  contingent  payment  obligations.  The  acquisition  was
accounted for as a purchase, with the excess of the purchase price over the fair
market value of net assets acquired being allocated to goodwill in the amount of
approximately  $5,843,000.  The goodwill is being  amortized  over its estimated
useful life of 40 years.

         In November  1998,  BFI  Medical  Waste  acquired  all of the assets of
Safety  Medical  Systems  of  Burlington,  Vermont  for  cash  of  approximately
$2,860,000.  The acquisition was accounted for as a purchase, with the excess of
the purchase  price over the fair market value of the net assets  acquired being
allocated to goodwill in the amount of approximately $2,254,000. The goodwill is
being amortized over its estimated useful life of 40 years.

         During the nine months ended June 30, 1999, BFI Medical Waste also paid
approximately  $1,944,000 to acquire four other medical waste businesses,  which
were  accounted  for  as  purchases.  The  results  of  all  of  these  business
combinations are not material to the operating results or assets and liabilities
of BFI Medical Waste.



<PAGE>


- ----------------------------------------------  --------------------------------

WE   HAVE   NOT    AUTHORIZED   ANY   DEALER,
SALESPERSON  OR  OTHER  PERSON  TO  GIVE  YOU
WRITTEN    INFORMATION    OTHER   THAN   THIS
PROSPECTUS OR TO MAKE  REPRESENTATIONS  AS TO
MATTERS  NOT STATED IN THIS  PROSPECTUS.  YOU
MUST  NOT RELY ON  UNAUTHORIZED  INFORMATION.
THIS PROSPECTUS IS NOT AN OFFER TO SELL THESE
SECURITIES OR OUR  SOLICITATION OF YOUR OFFER
TO BUY THESE  SECURITIES IN ANY  JURISDICTION
WHERE THAT WOULD NOT BE  PERMITTED  OR LEGAL.
NEITHER THE DELIVERY OF THIS  PROSPECTUS  NOR
ANY SALES  MADE  HEREUNDER  AFTER THE DATE OF     [LOGO OF STERICYCLE, INC.]
THIS  PROSPECTUS  SHALL CREATE AN IMPLICATION
THAT THE INFORMATION  CONTAINED HEREIN OR THE
AFFAIRS  HAVE  NOT  CHANGED  SINCE  THE  DATE          STERICYCLE, INC.
HEREOF.



          ---------------

         TABLE OF CONTENTS
                                              Page      OFFER TO EXCHANGE

Summary......................................   1
Risk Factors.................................   9         ALL OUTSTANDING
Special Note Regarding Forward-                       12 3/8% SERIES A SENIOR
   Looking Statements........................  20    SUBORDINATED NOTES DUE 2009
The Exchange Offer...........................  21              FOR
The BFI Acquisition..........................  29      12 3/8% SERIES B SENIOR
Capitalization...............................  30    SUBORDINATED NOTES DUE 2009
Unaudited Pro Forma Condensed Combined
 Financial Statements of Stericycle and the
 BFI Medical Waste Business..................  31
Selected Consolidated Financial and
   Other Data................................  40
Management's Discussion and Analysis
   of Financial Condition and Results of               ---------------------
   Operations................................  42           PROSPECTUS
Business.....................................  52      ---------------------
Management...................................  70
Executive Compensation.......................  73
Principal Stockholders.......................  77
Certain Transactions.........................  80
Description of Other Indebtedness............  81
Description of Notes.........................  84
Description of Capital Stock................. 127
Federal Income Tax Considerations............ 130
Plan of Distribution......................... 134
Legal Matters................................ 134
Independent Public Accountants............... 134
Index to Financial Statements................ F-1

                                                        DECEMBER 16, 1999

- ----------------------------------------------  --------------------------------





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