Document:

<PAGE>   1
                                                                  EXHIBIT (10)xx

                         UNITED STATES BANKRUPTCY COURT
                          FOR THE DISTRICT OF DELAWARE

In re:                                      )
                                            )     Chapter 11
KCS ENERGY, INC., a Delaware corporation    )
                                            )     Case No. 00-0310 (PJW)
     et al.                                 )
                                            )     Jointly Administered
               Debtors.                     )
                                            )

                    FINAL ORDER AUTHORIZING AND RESTRICTING
           USE OF CASH COLLATERAL AND GRANTING ADEQUATE PROTECTION(1)

     The Debtors having filed the Motion of Debtors for Entry of Order
Authorizing and Restricting Use of Cash Collateral and Granting Adequate
Protection ("the Motion") seeking entry of an order authorizing and restricting
use of cash collateral and granting adequate protection of (a) the secured
claims of CIBC Inc., as lender, Canadian Imperial Bank of Commerce ("CIBC"), as
Agent for CIBC Inc. and the other Medallion Lenders and Resources Lenders and
CIBC Inc., as Collateral Agent for itself and the other Medallion Lenders and
Resources Lenders, and (b) the secured claims of the Medallion Hedging Lender
(CIBC, CIBC Inc., the Medallion Lenders, the Resources Lenders and the
Medallion Hedging Lender, together with their successors and permitted assigns,
are hereinafter referred to as the "Lenders"); the Debtors and the Lenders
having stipulated and agreed to the entry of the Interim Order; the Court
having reviewed the Motion, having held a preliminary hearing on the Motion and
having entered the Interim Order; objections having been raised to the Motion
by certain holders of 11%

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

(1)  All terms not otherwise defined herein shall have the meaning ascribed to
them in the Order Authorizing and Restricting Use of Cash Collateral and
Granting Adequate Protection dated as of January 19, 2000 (the "Interim Order").
<PAGE>   2

Senior Notes due in 2003 and such objections having been overruled by the Court;
the Debtors having provided due and adequate notice of the Motion and Order on
the parties entitled to such notice; the Interim Order providing that if no
objection is timely filed and served, the Court may enter an order continuing
the Interim Order as a final order without conducting a final hearing; and no
objections to the Motion or Order having been filed by any party.

        IT IS HEREBY ORDERED THAT:

         1.    The Motion is granted in its entirety.

         2.    The Interim Order is continued as a final order effective as of
February 7, 2000 and is incorporated herein in its entirety.

Dated:   February 7, 2000           /s/     PETER J. WALSH
         ----------------           ------------------------------
                                    UNITED STATES BANKRUPTCY JUDGE

                                       -2-<PAGE>   1
                                                                   Exhibit 10.22

                                 FIRST AMENDMENT

      THIS FIRST AMENDMENT dated as of March 6, 2000 (this "Amendment") amends
the Amended and Restated Credit Agreement (the "Credit Agreement") dated as of
January 27, 2000 among SYNAGRO TECHNOLOGIES, INC. (the "Company"), various
financial institutions, CANADIAN IMPERIAL BANK OF COMMERCE, as Syndication Agent
(the "Syndication Agent"), and BANK OF AMERICA, N.A. ("Bank of America"), as
Administrative Agent (in such capacity, the "Administrative Agent"). Unless
otherwise defined herein, capitalized terms used herein have the respective
meanings set forth in the Credit Agreement.

      WHEREAS, the Company, Bank of America, CIBC, Inc. ("CIBC"), the
Syndication Agent and the Administrative Agent have entered into the Credit
Agreement; and

      WHEREAS, the parties hereto desire to amend the Credit Agreement to (a)
add the parties listed on the signatures hereof under the heading "New Banks"
(collectively the "New Banks") as "Banks" thereunder and (b) make certain other
changes as hereinafter set forth;

      NOW, THEREFORE, in consideration of the premises and for other good and
valuable consideration (the receipt and sufficiency of which are hereby
acknowledged), the parties hereto agree as follows:

I.    SECTION AMENDMENTS. Effective on (and subject to the occurrence of) the
First Amendment Effective Date (as defined below), the Credit Agreement shall be
amended as set forth below.

A.             Definition of Revolving Commitment Amount. The definition of
"Revolving Commitment Amount" in Section 1.1 is amended by deleting the amount
"$10,000,000" and substituting "$20,000,000" therefor.

A.             Definition of Revolving Termination Date. The definition of
"Revolving Termination Date" in Section 1.1 is amended by deleting the date
"July 27, 2006" and substituting "July 27, 2005" therefor.

A.             Section 2.1.2. The proviso in Section 2.1.2 is amended by
deleting the amount "$5,000,000" appearing in clause (i) thereof and
substituting "$15,000,000" therefor.

A.             Section 9.14. The first line of clause (b) of Section 9.14 is
amended by deleting the reference to "Schedule 9.15" and substituting "Schedule
9.14" therefor.
<PAGE>   2

A.             Section 11.2.1. The parenthetical clause in the second line of
clause (a) of Section 11.2.1 is amended by deleting the reference to "Section
9.15" and substituting "Section 9.14" therefor.

A.             Section 12.1.11. Section 12.1.11 is amended in its entirety to
read as follows:

                  12.1.11 Change in Control. (a) Any Person or group of Persons
         (within the meaning of Section 13 or 14 of the Securities Exchange Act
         of 1934, but excluding the executive managers of the Company as of the
         Effective Date) shall acquire beneficial ownership (within the meaning
         of Rule 13d-3 promulgated under such Act) of more shares of outstanding
         voting stock of the Company than the amount of such shares held by GTCR
         and its Affiliates; (b) during any 12-month period, individuals who at
         the beginning of such period constituted the Company's Board of
         Directors (together with any directors designated by GTCR and its
         Affiliates and new directors whose election by the Company's Board of
         Directors or whose nomination for election by the Company's
         shareholders was approved by a vote of at least a majority of the
         directors who either were directors at the beginning of such period or
         whose election or nomination was previously so approved) cease for any
         reason to constitute a majority of the Board of Directors of the
         Company; (c) GTCR and its Affiliates shall fail to own beneficially and
         of record 16.5% or more of the outstanding shares of voting stock of
         the Company; or (d) at least two partners or employees of GTCR, or
         individuals otherwise affiliated with GTCR in a manner reasonably
         acceptable to the Required Banks, shall fail to be members of the Board
         of Directors of the Company (provided that, if any such individual dies
         or terminates such individual's affiliation with GTCR, no Event of
         Default or Unmatured Event of Default shall arise under this clause (d)
         unless 30 days have elapsed after such death or termination without
         such individual being replaced by another individual affiliated with
         GTCR).

A.             Section 14.1. Section 14.1 is amended by inserting the following
prior to the last three sentences thereof:

         So long as no Event of Default exists or will result therefrom, this
         Agreement may be amended with the written consent of the Required
         Banks, the Administrative Agent and the Company (x) to add one or more
         credit facilities to this Agreement or to increase the Term A
         Commitment Amount, the Revolving Commitment Amount or the Acquisition
         Commitment Amount and to permit the extensions of credit from time to
         time outstanding thereunder and the accrued interest and fees in
         respect thereof to share ratably in the benefits of this Agreement and
         the other Loan Documents, (y) to include appropriately the Banks
         holding such credit facilities in any determination of the Required
         Banks and (z) to permit such additional extensions of credit to share
         ratably with the Loans in the application of mandatory prepayments
         pursuant to the applicable provisions of this Agreement.
<PAGE>   3

A.             Schedule 2.1. Schedule 2.1 is amended in its entirety by
substituting the Schedule 2.1 attached hereto therefor.

A.             Schedule 14.3. Schedule 14.3 is amended in its entirety by
substituting the Schedule 14.3 attached hereto therefor.

I.             SECTION REPRESENTATIONS AND WARRANTIES. The Company represents
and warrants to the Administrative Agent and the Banks that (a) the
representations and warranties made in Section 9 (excluding Section 9.8) of the
Credit Agreement are true and correct on and as of the First Amendment Effective
Date with the same effect as if made on and as of the First Amendment Effective
Date (except to the extent such representations and warranties expressly refer
to an earlier date, in which case they were true and correct as of such earlier
date); (b) no Event of Default or Unmatured Event of Default exists or will
result from the execution of this Amendment; (c) no event or circumstance has
occurred since the Closing Date that has resulted, or would reasonably be
expected to result, in a Material Adverse Effect; (d) the execution and delivery
by the Company of this Amendment, the execution and delivery by the Company of
the New Notes (as defined below), and the performance by the Company of its
obligations under the Credit Agreement as amended hereby (as so amended, the
"Amended Agreement") and under the New Notes (i) are within the corporate powers
of the Company, (ii) have been duly authorized by all necessary corporate action
on the part of the Company, (iii) have received all necessary governmental
approval and (iv) do not and will not contravene or conflict with any provision
of law or of the charter or by-laws of the Company or of any indenture, loan
agreement or other contract, or any order or decree, which is binding upon the
Company; and (e) each of the Amended Agreement and each New Note is the legal,
valid and binding obligation of the Company, enforceable against the Company in
accordance with its terms, except as enforceability may be limited by applicable
bankruptcy, insolvency, or similar laws affecting the enforcement of creditors'
rights generally or by equitable principles relating to enforceability.

I.             SECTION EFFECTIVENESS. The amendments set forth in Section 1
above shall become effective, as of the day and year first above written, on the
date (the "First Amendment Effective Date") on which the Administrative Agent
has received, (a) a counterpart of this Amendment executed by each of the
parties hereto (or, in the case of any party from which the Administrative Agent
has not received a counterpart hereof, facsimile confirmation of the execution
of a counterpart hereof by such party) and (b) each of the following documents,
each in form and substance satisfactory to the Administrative Agent:

A.             Notes. New Notes, substantially in the form of Exhibit A to the
Credit Agreement, payable to the order of each of the New Banks (collectively,
the "New Notes").
<PAGE>   4

A.             Resolutions. Certified copies of resolutions of the Board of
Directors of the Company authorizing the execution and delivery of this
Amendment and the New Notes.

A.             Incumbency and Signature Certificate. A certificate of the
Secretary or an Assistant Secretary of the Company certifying the names of the
officer or officers of the Company authorized to sign this Amendment and the New
Notes, together with a sample of the true signature of each such officer (it
being understood that the Administrative Agent and each Bank may conclusively
rely on such certificate until formally advised by a like certificate of any
changes therein).

A.             Confirmation. A Confirmation, substantially in the form of
Exhibit A, executed by the Company and each Subsidiary.

A.             Opinions. The opinions of (a) Locke, Liddell & Sapp LLP, counsel
to the Company, and (b) Kavanagh Maloney & Osnato LLP, New York counsel to the
Company.

A.             Other Documents. Such other documents as the Administrative Agent
or any Bank may reasonably request.

         SECTION 4 ADDITION OF BANKS. On the First Amendment Effective Date,
each New Bank shall become a "Bank" under and for all purposes of the Amended
Agreement, shall be bound by the Amended Agreement, and shall be entitled to the
benefits of the Amended Agreement and each other Loan Document, and each Bank
(including Bank of America and CIBC) shall have a Revolving Commitment, an
Acquisition Commitment, a Term A Loan Commitment and a Term B Loan in the amount
set forth on Schedule 2.1. To facilitate the foregoing, each New Bank agrees
that on the First Amendment Effective Date, it will remit to the Administrative
Agent funds in an amount equal the sum of its Revolving Percentage of all
outstanding Revolving Loans, its Acquisition Percentage of all outstanding
Acquisition Loans, its Term A Percentage of all outstanding Term A Loans and the
principal amount of its Term B Loan, and the Administrative Agent agrees to
immediately (i) remit a portion of such funds to Bank of America and CIBC, in
such amounts as are necessary to reduce the Loans of Bank of America and CIBC to
the appropriate amounts after giving effect hereto and (ii) remit the balance of
such funds (if any) to the Company. Each New Bank agrees that all interest and
fees accrued under the Credit Agreement prior to the First Amendment Effective
Date are the property of Bank of America and CIBC. By their signatures below
each of Bank of America and CIBC confirms that it has not sold or otherwise
encumbered its rights under the Credit Agreement or its interest in any Loans
prior to the syndication thereof pursuant to this Amendment.
<PAGE>   5

         SECTION 5 MISCELLANEOUS.

         5.1 Continuing Effectiveness, etc. As herein amended, the Credit
Agreement shall remain in full force and effect and is hereby ratified and
confirmed in all respects. After the First Amendment Effective Date, all
references in the Credit Agreement and each other Loan Document to the "Credit
Agreement" or similar terms shall refer to the Amended Agreement.

         5.2 Counterparts. This Amendment may be executed in any number of
counterparts and by the different parties on separate counterparts, and each
such counterpart shall be deemed to be an original but all such counterparts
shall together constitute one and the same Amendment.

         5.3 Expenses. The Company agrees to pay the reasonable costs and
expenses of the Administrative Agent (including reasonable attorney fees and
charges) in connection with the preparation, execution and delivery of this
Amendment.

         5.4 Governing Law. This Amendment shall be a contract made under and
governed by the internal laws of the State of New York.

         5.5 Successors and Assigns. This Amendment shall be binding upon the
Company, the Banks and the Administrative Agent and their respective successors
and assigns, and shall inure to the benefit of the Company, the Banks and the
Administrative Agent and the successors and assigns of the Banks and the
Administrative Agent.
<PAGE>   6

         Delivered at New York, New York, as of the day and year first above
written.

                                   SYNAGRO TECHNOLOGIES, INC.

                                   By
                                      -----------------------------------
                                      Title
                                           ------------------------------

                                   BANK OF AMERICA, N.A., as
                                   Administrative Agent

                                   By
                                     -----------------------------------
                                      Title
                                           ------------------------------

                                   BANK OF AMERICA, N.A., as Issuing
                                   Bank, Swing Line Bank and a Bank

                                   By
                                      -----------------------------------
                                      Title
                                           ------------------------------

                                   CANADIAN IMPERIAL BANK OF
                                   COMMERCE, as Syndication Agent

                                   By
                                      -----------------------------------
                                      Title
                                           ------------------------------

                                   CIBC, INC., as a Bank

                                   By
                                      -----------------------------------
                                      Title
                                           ------------------------------
<PAGE>   7

                                   "NEW BANKS":
                                   -----------

                                  SUNTRUST BANK

                                   By
                                     -----------------------------------
                                      Title
                                           ------------------------------

                                   FLEET CAPITAL CORPORATION

                                   By
                                     -----------------------------------
                                      Title
                                           ------------------------------

                                   IBJ WHITEHALL BANK AND TRUST COMPANY

                                   By
                                     -----------------------------------
                                      Title
                                           ------------------------------

                                   U.S. BANK NATIONAL ASSOCIATION

                                   By
                                     -----------------------------------
                                      Title
                                           ------------------------------

                                   THE BANK OF NOVA SCOTIA

                                   By
                                    ------------------------------------
                                      Title
                                           --------------------------------

                                   KEY CORPORATE CAPITAL INC.

                                   By
                                     -----------------------------------
                                      Title
                                           ------------------------------
                                   COBANK, ACB
<PAGE>   8

                                   By
                                     ----------------------------------
                                      Title
                                           -------------------------------

                                   HELLER FINANCIAL INC.

                                   By
                                    ------------------------------------
                                      Title
                                           --------------------------------
<PAGE>   9
                                  SCHEDULE 2.1
                              BANKS AND COMMITMENTS

<TABLE>
<CAPTION>
                                     Revolving         Acquisition        Term Loan A        Term Loan B
             Banks                   Commitment         Commitment         Commitment           Amount            Total
------------------------------     --------------     --------------     --------------     --------------     ------------
<S>                                <C>                <C>                <C>                <C>                <C>
Bank of America, N.A               $ 2,244,444.45     $ 3,366,666.67     $ 5,888,888.88     $ 4,500,000.00     $ 16,000,000
------------------------------     --------------     --------------     --------------     --------------     ------------
CIBC, Inc.                         $ 2,244,444.45     $ 3,366,666.67     $ 5,888,888.88     $ 4,500,000.00     $ 16,000,000
------------------------------     --------------     --------------     --------------     --------------     ------------
Suntrust Bank                      $ 2,250,000.00     $ 3,375,000.00     $ 4,500,000.00     $ 3,375,000.00     $ 13,500,000
------------------------------     --------------     --------------     --------------     --------------     ------------
Fleet Capital                      $ 2,083,333.33     $ 3,125,000.00     $ 4,166,666.67     $ 3,125,000.00     $ 12,500,000
Corporation
------------------------------     --------------     --------------     --------------     --------------     ------------
IBJ Whitehall Bank                 $ 1,833,333.33     $ 2,750,000.00     $ 3,666,666.67     $ 2,750,000.00     $ 11,000,000
and Trust Company
------------------------------     --------------     --------------     --------------     --------------     ------------
U.S. Bank National                 $ 2,444,444.45     $ 3,666,666.66     $ 4,888,888.89     $         0.00     $ 11,000,000
Association
------------------------------     --------------     --------------     --------------     --------------     ------------
The Bank of Nova
Scotia                             $ 1,833,333.33     $ 2,750,000.00     $ 3,666,666.67     $ 2,750,000.00     $ 11,000,000
------------------------------     --------------     --------------     --------------     --------------     ------------
Key Corporate                      $ 1,833,333.33     $ 2,750,000.00     $ 3,666,666.67     $ 2,750,000.00     $ 11,000,000
Capital, Inc.
------------------------------     --------------     --------------     --------------     --------------     ------------
CoBank, ACB                        $ 1,833,333.33     $ 2,750,000.00     $ 3,666,666.67     $ 2,750,000.00     $ 11,000,000
------------------------------     --------------     --------------     --------------     --------------     ------------
Heller Financial
Institution                        $ 1,400,000.00     $ 2,100,000.00     $         0.00     $ 3,500,000.00     $  7,000,000
------------------------------     --------------     --------------     --------------     --------------     ------------
TOTAL                              $20,000,000.00     $30,000,000.00     $40,000,000.00     $30,000,000.00     $120,000,000
------------------------------     --------------     --------------     --------------     --------------     ------------
</TABLE>
<PAGE>   10

                                                                  SCHEDULE 14.3

                              ADDRESSES FOR NOTICES

SYNAGRO TECHNOLOGIES, INC.

1800 Bering Drive
Suite 1000
Houston, Texas 77057
Attention: J. Paul Withrow
Telephone: (713) 369-1704
Facsimile: (713) 369-1760

BANK OF AMERICA, N.A., as Administrative Agent

Agency Management Services
231 South LaSalle Street
Chicago, Illinois 60697
Attention: Kristine Hyde
Telephone:  (312) 828-1657
Facsimile:  (312) 974-9102

CANADIAN IMPERIAL BANK OF COMMERCE, as Syndication Agent

2 Paces West
2727 Paces Ferry Road
Suite 1200
Atlanta, Georgia 30339
Attention: Sheila Hogans
Telephone: (770) 319-4820
Facsimile: (770) 319-4950

BANK OF AMERICA, N.A., as Issuing Bank, as Swing Line Bank, and as a Bank

231 South LaSalle Street
Chicago, Illinois 60697
Attention:  Robert Rospierski
Telephone:  (312) 828-8363
Facsimile:  (312) 828-1974
<PAGE>   11

CIBC INC., as a Bank

425 Lexington Avenue
New York, New York 10017
Attention: R. Todd Constable
Telephone: (212) 856-3629
Facsimile: (212) 856-3991

SUNTRUST BANK, as a Bank

25 Park Place
Mail Code 075, 26th Floor
Atlanta, GA 30303
Attention: Richard Wilson
Telephone: 404-230-5426
Facsimile: 404-575-2693

FLEET CAPITAL CORPORATION, as a Bank

One South Wacker Dr., Suite 1400
Chicago, IL 60606
Attention: Andrew W. Pappas
Telephone: 312-827-4217
Facsimile: 312-332-6531

IBJ WHITEHALL BANK AND TRUST COMPANY, as a Bank

One State Street, 9th Floor
New York, NY 10004
Attention: Peter Dancy
Telephone: 212-858-2944
Facsimile: 212-425-8048

U.S. BANK NATIONAL ASSOCIATION, as a Bank

One Illinois Center, Suite 3000
Chicago, IL 60601
Attention: Sarah Hemmer
Telephone: 312-228-9406
Facsimile: 312-228-9402
<PAGE>   12

THE BANK OF NOVA SCOTIA, as a Bank

600 Peachtree, Suite 2700
Atlanta, Georgia 30308
Attention: Dorothy Legista
Telephone: 404-877-1535
Facsimile: 404-888-8998

with a copy to:

Houston Representative Office
1100 Louisiana, Suite 3000
Houston, Texas 77002
Attention: Paul Gonin

KEY CORPORATE CAPITAL INC., as a Bank

127 Public Square, 6th Floor
Cleveland, OH 44114
Attention: Jeff Evans
Telephone: 216-689-4392
Facsimile: 216-689-4077

COBANK, ACB as a Bank

5500 South Quebec Street
Communications, Energy & Infrastructure Group
Englewood, CO 80111
Attention: Todd Telesz
Telephone: 303-740-4037
Facsimile: 303-224-2615

HELLER FINANCIAL, INC., as a Bank

500 West Monroe
Chicago, IL 60661
Attention: Bob Reeg
Telephone: 312-441-6855
Facsimile: 312-441-7357
<PAGE>   13

                                                                      EXHIBIT A

                                  CONFIRMATION

                            Dated as of March 6, 2000

To:      Bank of America, N.A., individually and as administrative agent (in
         such capacity, the "Administrative Agent"), Canadian Imperial Bank of
         Commerce, individually and as syndication agent (in such capacity, the
         "Syndication Agent"), and the other financial institutions party to the
         Restated Credit Agreement referred to below

         Please refer to the following:

         (a)      the Amended and Restated Credit Agreement dated as of January
27, 2000 (the "Restated Credit Agreement") among Synagro Technologies, Inc. (the
"Company"), various financial institutions, the Syndication Agent and the
Administrative Agent;

         (b)      the First Amendment dated as of March 6, 2000 to the Restated
Credit Agreement (the "First Amendment");

         (c)      the Guaranty dated as of October 7, 1998 by each of the
undersigned (other than the Company) in favor of Bank of America, N.A. (then
known as Bank of America National Trust and Savings Association), in its
capacity as agent, and the Banks (as defined therein);

         (d)      the Company Pledge Agreement dated as of October 7, 1998
between the Company and Bank of America, N.A., in its capacity as agent;

         (e)      the Subsidiary Pledge Agreements dated as of October 7, 1998
between each of Synagro Midwest, Inc., Synagro Southwest, Inc., Synagro
Southeast, Inc., Synagro West, Inc. and Synagro Northeast, Inc. and Bank of
America, N.A., in its capacity as agent;

         (f)      the Collateral Assignments of Partnership Interests dated as
of January 27, 2000 between each of the Company, Residual Technologies, L.P.,
Fairhaven Residual Systems, Inc., Residual Technologies Systems, Inc.,
Netco-Waterbury Systems, Inc., New Haven Residuals Systems, Inc.,
Netco-Residuals Management, L.P. and Netco-Residuals Management Systems, Inc.
and Bank of America, N.A., in its capacity as agent; and

         (g)      the Restated Security Agreement dated as of January 27, 2000
among the undersigned and the Administrative Agent.
<PAGE>   14

         Each document referred to in items (b) through (g) above is called a
"Credit Document". Capitalized terms used but not defined herein shall have the
meanings set forth in the Restated Credit Agreement.

         Each of the undersigned hereby confirms to the Banks and the
Administrative Agent that each Credit Document to which such undersigned is a
party continues in full force and effect on the date hereof after giving effect
to the First Amendment and is the legal, valid and binding obligation of such
undersigned, enforceable against such undersigned in accordance with its terms.

         IN WITNESS WHEREOF, the undersigned have executed this Confirmation as
the date first above written.
<PAGE>   15

                                   SYNAGRO TECHNOLOGIES, INC.
                                            SYNAGRO WEST, INC.

                                   SYNAGRO OF CALIFORNIA, INC. (formerly known
                                       as Pima Gro Systems, Inc.)

                                    SYNAGRO COMPOSTING COMPANY OF
                                       CALIFORNIA, INC. (formerly known as
                                       Recyc, Inc.)

                                   SYNAGRO MIDWEST, INC.

                                   SYNAGRO OF MICHIGAN, INC. (formerly known as
                                       National Resource Recovery, Inc.)

                                   SYNAGRO OF WISCONSIN, INC. (formerly known as
                                      A&J Cartage, Inc.)

                                   SYNAGRO SOUTHWEST, INC.

                                   SYNAGRO OF TEXAS - VITAL-CYCLE, INC.

                                   SYNAGRO OF TEXAS - CDR, INC. (formerly known
                                       as Synagro of Texas, Inc. and CDR
                                       Environmental, Inc.)

                                   SYNAGRO SOUTHEAST, INC.

                                   SYNAGRO OF NORTH CAROLINA - AMSCO, INC.

                                   SYNAGRO OF FLORIDA - ANTI-POLLUTION, INC.

                                   SYNAGRO OF NORTH CAROLINA - EWR, INC.
                                       (formerly known as Synagro of
                                        North Carolina, Inc. and Environmental
                                        Waste Recycling, Inc.)

                                   SYNAGRO OF FLORIDA - A&J, INC. (formerly
                                       known as A&J Cartage Southwest, Inc.)

                                   SYNAGRO NORTHEAST, INC.

                                   SYNAGRO MID-ATLANTIC, INC. (formerly known as
                                       CDR Mid-Atlantic, a division
                                       of CDR Environmental, Inc.)

                                   MICHIGAN ORGANIC RESOURCES, INC.

                                   ORGANI-GRO, INC.

                                   ST INTERCO, INC.

                                   COMPOSTING CORPORATION OF AMERICA

                                   NEW HAVEN RESIDUALS SYSTEMS, INC.

                                   RESIDUAL TECHNOLOGIES SYSTEMS, INC.

                                   FAIRHAVEN RESIDUAL SYSTEMS, INC.
<PAGE>   16

                                   NEW ENGLAND TREATMENT COMPANY, INC.

                                   NETCO-CONNECTICUT, INC.

                                   NETCO-WATERBURY SYSTEMS, INC.

                                   NETCO-RESIDUALS MANAGEMENT SYSTEMS, INC.

                                   DAVIS WATER ANALYSIS, INC.

                                   ECOSYSTEMATICS, INC.

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

                                   NETCO-RESIDUALS MANAGEMENT, LIMITED
                                   PARTNERSHIP

                                   By: Netco-Residuals Management Systems, Inc.,
                                       its General Partner

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

                                   RESIDUAL TECHNOLOGIES, LIMITED PARTNERSHIP

                                   By: Residual Technologies Systems, Inc.,
                                       its General Partner

                                   By:
                                      -----------------------------------
                                   Name:
                                        ---------------------------------
                                   Title:
                                         --------------------------------
<PAGE>   17

                                   FAIRHAVEN RESIDUALS, LIMITED PARTNERSHIP

                                   By: Fairhaven Residual Systems, Inc.,
                                       its General Partner

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

                                   PROVIDENCE SOILS, LLC

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

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