Document:

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                                                                 EXHIBIT 10.17.9

WELLS FARGO                                      RESOLVING LINE OF CREDIT NOTE

4,000,000.00                                          Oakland, California
                                                      July 1, 2003

FOR VALUE RECEIVED, the undersigned CHOLESTECH CORPORATION ("Borrower") promises
to pay to the order of WELLS FARGO BANK, NATIONAL ASSOCIATION ("Bank") at its
office at EAST BAY RCBO, ONE KAISER PLAZA, SUITE #850, OAKLAND, CA 94612, or at
such other place as the holder hereof may designate, in lawful money of the
United States of America and in immediately available funds, the principal sum
of $4,000,000.00, or so much thereof as may be advanced and be outstanding, with
interest thereon, to be computed on each advance from the date of its
disbursement as set forth herein.

1.       DEFININTIONS:

         As used herein, the following terms hall have the meanings set forth
         after each, and any other term defined in this Note shall have the
         meaning set forth at the place defined:

1.1      "Business Day" means any day except a Saturday, Sunday or any other day
         on which commercial banks in California are authorized or required by
         state law to close.

1.2      "Fixed Rate Term" means a period commencing on a Business Day and
         continuing for 1,2,3 OR 6 MONTHS, designated by Borrower, during which
         all or a portion of the outstanding principal balance of this Note
         bears interest determined in relation to LIBOR; provided however, that
         no Fixed Rate Term may be selected for a principal amount less that
         $100,000.00; and provided further, that no Fixed Rate Term shall extend
         beyond the scheduled maturity date hereof. If any Fixed Rate Term would
         end on a day which is not a Business Day, then such Fixed Rate Term
         shall be extended to the next succeeding Business Day.

1.3      "LIBOR" means the rate per annum (rounded upward, if necessary, to the
         nearest whole 1/8 if 1%) determined by dividing Base LIBOR by a
         percentage equal to 100% less any LIBOR Reserve Percentage.

         a)       "Base LIBOR" means the rate per annum for United States dollar
         deposits quoted by Bank as the Inter-Bank Market Offered Rate, with the
         understanding that such rate is quoted by Bank for the purpose of
         calculating effective rates of interest for loans making reference
         thereto, on the first day of the Fixed Rate Term for delivery of funds
         on said date for a period of time approximately equal to the number of
         days is such Fixed Rate Term applies. Borrower understands and agrees
         that Bank may base its Inter-Bank Market Offered Rate upon such offers
         or other market indicators of the Inter-Bank Market as Bank in its
         discretion deems appropriate including, but not limited to, the rate
         offered for U.S. dollar deposits on the London Inter-Bank Market.

         b)       "LIBOR Reserve Percentage" means the reserve percentage
         prescribed by the Board of Governors of the Federal Reserve System (or
         any successor) for "Eurocurrency Liabilities" (as defined in Regulation
         D of the Federal Reserve Board, as amended), adjusted by Bank for
         expected changes in such reserve percentage during the applicable Fixed
         Rate Term.

1.4      "Prime Rate" means at any time the rate of interest most recently
         announced within Bank at its principal office as its Prime Rate, with
         the understanding that the Prime Rate is one of Bank's base rates and
         serves as the basis upon which effective rates of interest are
         calculated for those loans making reference thereto, and is evidenced
         by the recording thereof after its announcement in such internal
         publications as Bank may designate.

PROMNOTE. CA (01/03)
REVOLVING LINE OF CREDIT NOTE
02677, #1646642865

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WELLS FARGO                                      RESOLVING LINE OF CREDIT NOTE

2.       INTEREST:

2.1      Interest. The outstanding balance of this Note shall bear interest
         (computed on the basis of a 360-day year, actual days elapsed) either
         (a) at a fluctuating rate per annum .50000% below the Prime Rate in
         effect from time to time, or (b) at a fixed rate per annum determined
         by Bank to be 1.75000% above LIBOR in effect on the first day of the
         applicable Fixed Rate Term. When interest is determined in relation to
         the Prime Rate, each change in the rate of interest hereunder shall
         become effective on the date each Prime Rate change is announced within
         Bank. With respect to each LIBOR selection option selected hereunder,
         Bank is hereby authorized to note the date, principal amount, interest
         rate and Fixed Rate Term applicable thereto and any payments made
         thereon on Bank's books and records (either manually or by electronic
         entry) and/or on any schedule attached to this Note, which notations
         shall be prima facie evidence of the accuracy of the information noted.

2.2      Selection of Interest Rate Options. At any time any portion of this
         Note bears interest determined in relation to LIBOR, it may be
         continued by Borrower at the end of the Fixed Rate Term applicable
         thereto so that all or a portion thereof bears interest determined in
         relation to the Prime Rate or to LIBOR for a new Fixed Rate Term
         designated by Borrower. At any time any portion of this Note bears
         interest determined in relation to the Prime Rate, Borrower may convert
         all or a portion thereof so that is bears interest determined in
         relation to LIBOR for a Fixed Rate Term designated by Borrower. At such
         time as Borrower requests an advance hereunder or wishes to select a
         LIBOR option for all or a portion of the outstanding principal balance
         hereof, and at the end of each Fixed Rate Term, Borrower shall give
         Bank notice specifying (a) the interest rate option selected by
         Borrower; (b) the principal amount subject thereto; and (c) for each
         LIBOR selection, the length of the applicable Fixed Rate Term. Any such
         notice may be given by telephone (or such other electronic method as
         Bank may permit) so long as, with respect to each LIBOR selection, (i)
         if requested by Bank, Borrower provides to Bank written confirmation
         thereof not later than 3 Business Days after such notice is given, and
         (ii) such notice is given to Bank prior to 10:00 a.m. on the first day
         of the Fixed Rate Term, or at a day later during any Business Day if
         Bank, at it's sole option but without obligation to do so, accepts
         Borrower's notice and quotes a fixed rate to Borrower. If Borrower does
         not immediately accept a fixed rate when quoted by Bank, the quoted
         rate shall expire and any subsequent LIBOR request from Borrower shall
         be subject to a redetermination by Bank of the applicable fixed rate.
         If no specific designation if interest is made at the time any advance
         is requested hereunder or at the end of any Fixed Rate Term, Borrower
         shall be deemed to have made a Prime Rate interest selection for such
         advance or the principal amount to which such Fixed Rate Term applied.

2.3      Taxes and Regulatory Costs. Borrower shall pay to Bank immediately upon
         demand, in addition to any other amounts due or to become hereunder,
         any and all (a) withholdings, interest equalization taxes, stamp taxes
         or other taxes (except income and franchise taxes) imposed by any
         domestic or foreign governmental authority and related in any manner to
         LIBOR, and (b) future, supplemental, emergency or other changes in the
         LIBOR Reserve Percentage, assessment rates imposes by the Federal
         Deposit Insurance Corporation, or similar requirements or costs imposed
         by any domestic or foreign governmental authority or resulting from
         compliance by Bank with any respect or directive (whether or not having
         the force of law) from any central bank or other governmental authority
         and related in any manner to LIBOR to the extent they are not included
         in the calculation of LIBOR. In determining which of the foregoing are
         attributable to any LIBOR option available to Borrower hereunder, any
         reasonable allocation made by Bank among its operations shall be
         conclusive and binding upon Borrower.

2.4      Payment of Interest. Interest accrued on this Note shall be payable on
         the 1st day of each MONTH, commencing AUGUST 1, 2003.

2.5      Default Interest. From and after the maturity date of this Note, or
         such earlier date as all principal owing hereunder becomes due and
         payable by acceleration or otherwise, the outstanding principal balance
         of this Note shall bear interest until pain in full at an increased
         rate per annum (computed on the basis of a 360-day year, actual days
         elapsed) equal to 4% above the rate of interest from time to time
         applicable to this Note.

PROMNOTE. CA (01/03)
REVOLVING LINE OF CREDIT NOTE
02677, #1646642865

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WELLS FARGO                                      RESOLVING LINE OF CREDIT NOTE

3.       BORROWING AND REPAYMENT:

3.1      Borrowing and Repayment: Borrower may from time to time during the term
         of this Note borrow, partially or wholly repay its outstanding
         borrowings, and reborrow, subject to all of the limitations, terms and
         conditions of this Note and of any document executed in connection with
         or governing this Note; provided however, that the total outstanding
         borrowings under this Note shall not at any time exceed the principal
         amount stated above. The unpaid principal balance of this obligation at
         any time shall be the total amounts advanced hereunder by the holder
         hereof less the amount of principal payments made hereon by or for any
         balance of this Note shall be due and payable in full on SEPTEMBER 1,
         2005.

3.2      Advances: Advances hereunder, to the total amount of the principal sum
         available hereunder, may be made by the holder at the oral or written
         consent of (a) WARREN PINCKERT OR WILLIAM W. BURKE, any one acting
         alone, who are authorized to request advances and direct the
         disposition of any advances until written notice of the revocation of
         such authority is received by the holder at the office designated
         above, or (b) any person, with respect to advances deposited to the
         credit of any deposit account of any Borrower, which advances, when so
         deposited, shall be conclusively presumed to have been made to or for
         the benefit of each Borrower regardless of the fact that persons other
         than those authorized to request advances may have authority to draw
         against such account. The holder shall have no obligation to determine
         whether any person requesting an advance is or has been authorized by
         any Borrower.

3.3      Application of Payments: Each payment made on this Note shall be
         credited first, to any interest then due and second, to the outstanding
         principal balance hereof. All payments credited to principal shall be
         applied first, to the outstanding principal balance of this Note which
         bears interest determined in relation to the Prime Rate, if any, and
         second, to the outstanding principal balance of this Note which bears
         interest determined in relation to LIBOR, with such payments applied to
         the oldest Fixed Rate Term first.

4.       PREPAYMENT:

4.1      Prime Rate: Borrower may prepay principal on any portion of this Note
         which bears interest determined in relation to the Prime Rate at any
         time, in any amount and without penalty.

4.2      LIBOR: Borrower may prepay principal on any portion of this Note which
         bears interest determined in relation to the LIBOR at any time and in
         the minimum amount of $100,000.00; provided however, that if the
         outstanding principal balance of such portion of this Note is less than
         said amount, the minimum prepayment amount shall be the entire
         outstanding principal balance thereof. In consideration of Bank
         providing this prepayment option to Borrower, or if any such portion of
         this Note shall become due and payable at any time prior to the last
         day of the Fixed Rate Term applicable thereto by acceleration or
         otherwise, Borrower shall pay to Bank immediately upon demand a fee
         which is the sum of the discounted money differences for each month
         from the month of prepayment through the month in which such Fixed Rate
         Term matures, calculated ass follows for each such month:

                  a)       Determine the amount of interest which would have
                           accrued each month on the amount prepaid at the
                           interest rate applicable to such amount had it
                           remained outstanding until the last day of the Fixed
                           Rate Term applicable thereto.

                  b)       Subtract from the amount determined in (a) above the
                           amount of interest which would have accrued for the
                           same month on the amount prepaid for the remaining
                           term of such Fixed Rate Term at LIBOR in effect on
                           the date of prepayment of new loans made for such
                           term and in a principal amount equal to the amount
                           prepaid.

                  c)       If the result obtained in (b) for any month is
                           greater than zero, discount that difference by LIBOR
                           used in (b) above.

PROMNOTE. CA (01/03)
REVOLVING LINE OF CREDIT NOTE
02677, #1646642865

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WELLS FARGO                                      RESOLVING LINE OF CREDIT NOTE

3.1      Borrowing and Repayment. Borrower may form time to time during the term
         of this Note borrow, partially or wholly repay its outstanding
         borrowings, and reborrow, subject to all of the limitations, terms and
         conditions of this Note and of any document executed in connection with
         or governing this Note; provided however, that the total outstanding
         borrowings under this Note shall not at any time exceed the principal
         amount stated above. The unpaid principal balance of this obligation at
         any time shall be the total amounts advanced hereunder by the holder
         hereof les the amount of principal payments made hereon by or foe any
         Borrower, which balance may be endorsed hereon from time to time by the
         holder. The outstanding principal balance of this Note shall be due and
         payable in full on SEPTEMBER 1, 2005.

3.2      Advances: Advances hereunder, to the total amount of the principal sum
         available hereunder, may be made by the holder at the oral or written
         request of (a) WARREN PINCKERT OR WILLIAM W. BURKE, any one acting
         alone, who are authorized to request advances and direct the
         disposition of any advances until written notice of the revocation of
         such authority is received by the holder at the office designated
         above, or (b) any person, with respect to advances deposited to the
         credit of any deposit account of any Borrower, which advances, when so
         deposited, shall be conclusively presumed to have been made to or for
         the benefit of each Borrower regardless of the fact that persons other
         than those authorized to request advances may have authority to draw
         against such account. The holder shall have no obligation to determine
         whether any person requesting an advance is or has been authorized by
         any Borrower.

3.3      Application of Payments: Each payment made on this Note shall be
         credited first, to any interest then due and second, to the outstanding
         principal balance hereof. All payments credited to principal shall be
         applied first, to the outstanding principal balance of this Note which
         bears interest determined in relation to the Prime Rate, if any, and
         second, to the outstanding principal balance of this Note which bears
         interest determined in relation to LIBOR, with such payments applied to
         the oldest Fixed Rate Term first.

4.       PREPAYMENT:

4.1      Prime Rate: Borrower may prepay principal on any portion of this Note
         which bears interest determined in relation to the Prime Rate at any
         time, in any amount and without penalty.

4.2      LIBOR: Borrower may prepay principal on any portion of this Note which
         bears interest determined in relation to LIBOR at any time and in the
         minimum amount of $100,000.00; provided however, that if the
         outstanding principal balance of such portion of this Note is less than
         said amount, the minimum prepayment amount shall be the entire
         outstanding principal balance thereof. In consideration of Bank
         providing this prepayment option to Borrower, of if any such portion of
         this Note shall become due and payable at any time prior to the last
         day of the Fixed Rate Term applicable thereto by acceleration or
         otherwise, Borrower shall pay to Bank immediately upon demand a fee
         which is the sum of the discounted monthly differences for each month
         from the month of prepayment through the month in which such Fixed Rate
         Term matures, calculated as follows for each such month:

                  a)       Determine the amount of interest which would have
                           accrued each month on the amount prepaid at the
                           interest rate applicable to such amount had it
                           remained outstanding until the last day of the Fixed
                           Rate Term applicable thereto.

                  b)       Subtract from the amount determined in (a) above the
                           amount of interest which would have accrued for the
                           same month on the amount prepaid for the remaining
                           term of such Fixed Rate Term at LIBOR in effect on
                           the date of prepayment of new loans made for such
                           term and in a principal amount equal to the amount
                           prepaid.

                  c)       If the result obtained in (b) for any month is
                           greater than zero, discount that difference by LIBOR
                           used in (b) above.

PROMNOTE. CA (01/03)
REVOLVING LINE OF CREDIT NOTE
02677, #1646642865

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WELLS FARGO                                      RESOLVING LINE OF CREDIT NOTE

Each Borrower acknowledges that prepayment of such amount may result in Bank
incurring additional costs, expenses and/or liabilities, and that it is
difficult to ascertain the full extent of such costs, expenses and/or
liabilities. Each Borrower, therefore, agrees to pay the above-described
prepayment fee and agrees that said amount represents a reasonable estimate of
the prepayment costs, expenses and/or liabilities of Bank. If Borrower fails to
pay any prepayment fee when due, the amount of such prepayment fee shall
thereafter bear interest until paid at a rate per annum 2.000% above the Prime
Rate in effect from time to time (computed on the basis of a 360-day year,
actual days elapsed). Each change in the rate of interest on any such past due
prepayment fee shall become effective on the date each Prime Rate change is
announced within Bank.

5.       EVENTS OF DEFAULT:

         The occurrence of any of the following shall constitute an "Event of
         Default" under this Note:

5.1      The failure to pay any principal, interest, fees or other charges when
         due hereunder or under any contract, instrument or document executed in
         connection with this Note.

5.2      The filing of a petition by or against any Borrower, any guarantor of
         this Note or any general partner or joint venturer in any Borrower
         which is a partnership or a joint venture (with each such guarantor,
         general partner and/or joint venturer referred to herein as a "Third
         Party Obligor") under any provisions of the Bankruptcy Reform Act,
         Title 11 of the United States Code, as amended or recodified from time
         to time, or under any similar or other law relating to bankruptcy,
         insolvency, reorganization or other relief for debtors; the appointment
         of a receiver, trustee, custodian or liquidator of or for any part of
         the assets or property of any Borrower or Third Party Obligor; any
         Borrower of Third Party Obligor becomes insolvent, makes a general
         assignment for the benefit of creditors of is generally not paying its
         debts as they become due; or any attachment or like levy on any
         property of any Borrower of Third Party Obligator.

5.3      The death or incapacity of any individual Borrower of Third Party
         Obligor, or the dissolution or liquidation of any Borrower of Third
         Party Obligor which is a corporation, partnership, joint venture or
         other type of entity.

5.4      Any default in the payment or performance of any obligation, or any
         defined event of default, under any provisions of any contract,
         instrument or document pursuant to which any Borrower of Third Party
         Obligor has incurred any obligation for borrowed money, any purchase
         obligation, or any other liability of any kind to any person or entity,
         including the holder.

5.5      Any financial statement provided by any Borrower of Third Party Obligor
         to Bank proves to be incorrect, false or misleading in any material
         respect.

5.6      Any sale or transfer of all of a substantial or material part of the
         assets of any Borrower of Third Party Obligor other than in the
         ordinary course of its business.

5.7      Any violation or breach of any provision of, or any defined event of
         default under, any addendum to this Note or any loan agreement,
         guaranty, security agreement, deed of trust, mortgage or other document
         executed in connection with or securing this Note.

6.       MISCELLANEOUS:

6.1      Remedies: Upon the occurrence of any Event of Default, the holder of
         this Note, at the holder's option, may declare all sums of principal
         and interest outstanding hereunder to be immediately due and payable
         without presentment, demand, notice of nonperformance, notice of
         protest, protest of notice of dishonor, all of which are expressly
         waived by each Borrower, and the obligation, if any, of the holder to
         extend any further credit

PROMNOTE. CA (01/03)
REVOLVING LINE OF CREDIT NOTE
02677, #1646642865

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WELLS FARGO                                      RESOLVING LINE OF CREDIT NOTE

         hereunder shall immediately cease and terminate. Each Borrower shall
         pay to the holder immediately upon demand the full amount of all
         payments, advances, charges, costs and expenses, including reasonable
         attorney's fees (to include outside counsel fees and all allocated
         costs of the holder's in-house counsel), expended or incurred by the
         holder in connection with the enforcement of the holder's rights and/or
         the collection of any amounts which become due to the holder under this
         Note, and the prosecution or defense of any action in any way related
         to this Note, including without limitation, any action for declaratory
         relief, whether incurred at the trial or appellate level, in an
         arbitration proceeding or otherwise, and including any of the foregoing
         incurred in connection with any bankruptcy proceeding (including
         without limitation, any adversary proceeding, contested matter or
         motion brought by Bank or any other person) relating to any Borrower or
         any other person or entity.

6.2      Obligations Joint and Several. Should more than one person or entity
         sign this Note as a Borrower, the obligations of each such Borrower
         shall be joint and several.

6.3      Governing Law. This Note shall be governed by and construed in
         accordance with the laws of the State of California.

IN WITNESS WHEREOF, the undersigned has executed this Note as of the date first
written above.

Cholestech Corporation

By: /s/ William W. Burke
    --------------------
    William W. Burke, Chief Financial Officer

PROMNOTE. CA (01/03)
REVOLVING LINE OF CREDIT NOTE
02677, #1646642865

                                        6Exhibit 10.1 (t)

                                SEVENTH AMENDMENT
                             TO DEBTOR-IN-POSSESSION
                      CREDIT AGREEMENT AND LIMITED CONSENT

                  This SEVENTH AMENDMENT TO DEBTOR-IN-POSSESSION CREDIT
AGREEMENT AND LIMITED CONSENT (this "Amendment") is dated as of May 23, 2003 and
entered into by and among COVANTA ENERGY CORPORATION, a Delaware corporation
("Company"), and THE SUBSIDIARIES OF COMPANY LISTED ON THE SIGNATURE PAGES
HEREOF AS BORROWERS (collectively, Company and such Subsidiaries of Company are
"Borrowers" and each a "Borrower"), THE SUBSIDIARIES OF COMPANY LISTED ON THE
SIGNATURE PAGES HEREOF AS SUBSIDIARY GUARANTORS (collectively, the "Subsidiary
Guarantors"), THE LENDERS PARTY HERETO, BANK OF AMERICA, N.A., as Administrative
Agent for the Lenders ("Administrative Agent"), and DEUTSCHE BANK AG, NEW YORK
BRANCH, as Documentation Agent for the Lenders ("Documentation Agent"), and is
made with reference to that certain Debtor-in-Possession Credit Agreement dated
as of April 1, 2002, as amended by that certain First Amendment to
Debtor-in-Possession Credit Agreement and Security Agreement dated as of April
3, 2002, that certain Second Amendment to Debtor-in-Possession Credit Agreement
dated as of May 10, 2002, that certain Third Amendment and Limited Waiver to
Debtor-in-Possession Credit Agreement dated as of October 4, 2002, that certain
Fourth Amendment to Debtor-in-Possession Credit Agreement and Limited Consent
dated as of December 10, 2002, that certain Fifth Amendment to
Debtor-in-Possession Credit Agreement dated as of December 18, 2002, and that
certain Sixth Amendment to Debtor-in-Possession Credit Agreement, Limited
Consent and Amendment to Security Agreement dated as of March 25, 2003 (as so
amended, the "Credit Agreement"), by and among Borrowers, the financial
institutions parties thereto as Lenders, Documentation Agent and Administrative
Agent. Capitalized terms used herein without definition shall have the same
meanings herein as set forth in the Credit Agreement (as amended by this
Amendment).

                                    RECITALS

                  WHEREAS, Borrowers and the undersigned Lenders desire (i) to
amend the Credit Agreement to permit a restructuring of the obligations relating
to the Hennepin Project and to permit amendments to the corresponding Tranche A
Letter of Credit and Tranche B Letters of Credit, and (ii) to make certain other
amendments to the Credit Agreement, subject to the terms and conditions set
forth below;

                  NOW, THEREFORE, in consideration of the premises and
agreements, provisions and covenants herein contained, the parties hereto agree
as follows:

         SECTION 1. AMENDMENTS TO THE CREDIT AGREEMENT; LIMITED CONSENT

         1.1 Provisions Relating to Defined Terms.

                  Subsection 1.1 of the Credit Agreement is hereby amended by
deleting the definition of "Tranche A Letter of Credit Sublimit" in its entirety
and inserting the following new definitions in the appropriate alphabetical
order:

                  "CHERC" means Covanta Hennepin Energy Resource Co., L.P., a
    Borrower.

                  "GECC" means TIFD III-A Inc., a wholly owned Subsidiary of
    General Electric Capital Corporation.

                  "Hennepin County" means the County of Hennepin, Minnesota.

                  "Hennepin L/C Amendments" means, collectively, amendments to
    the Hennepin Letters of Credit made by the Issuing Lenders thereof
    concurrently with the Hennepin Project Restructuring, which amendments
    shall, among other things, acknowledge the transfer of such Letters of
    Credit by the existing beneficiary thereof to Hennepin County and provide
    (i) that the aggregate outstanding face amount of the Hennepin Letters of
    Credit shall be automatically and irrevocably reduced (until the effective
    date of a plan of reorganization for Company) on a monthly basis by the
    amount of "Fee Credits" referred to in clause (i) of the definition of "New
    Hennepin Service Agreement" below that are actually applied in the relevant
    month (with all such reductions to be applied to the Hennepin Letter of
    Credit referred to in clause (iii) of the definition of "Hennepin Letters of
    Credit"), (ii) that on the effective date of a plan of reorganization for
    Company, the Hennepin Letters of Credit referred to in clauses (ii) and
    (iii) of the definition of "Hennepin Letters of Credit" shall automatically
    expire and be cancelled and the aggregate outstanding face amount of the
    remaining Hennepin Letter of Credit shall be automatically and irrevocably
    reduced to $17,000,000, (iii) that thereafter, on July 1, 2010 and on July 1
    of each year thereafter the remaining Hennepin Letter of Credit shall be
    automatically and irrevocably reduced by $2,500,000 on each such date until
    July 1, 2016, on which date the remaining Hennepin Letter of Credit shall
    automatically expire and be cancelled, (iv) that the Hennepin Letters of
    Credit shall be drawable only upon the termination of the New Hennepin
    Service Agreement resulting from a default by CHERC thereunder or, for as
    long as the Hennepin Letters of Credit are required to be outstanding, upon
    failure to extend or renew the same 20 calendar days prior to the stated
    expiration date thereof, and (v) for the terms contained in Annex B attached
    to the Seventh Amendment.

                  "Hennepin Letters of Credit" means, collectively, (i) that
    certain Tranche B Letter of Credit issued by Commerzbank and outstanding in
    the face amount of $18,880,552 on and as of the Seventh Amendment Effective
    Date, (ii) that certain Tranche B Letter of Credit issued by Bank of
    America, N.A., and outstanding in the face amount of $4,195,678.12 on and as
    of the Seventh Amendment Effective Date, and (iii) that certain Tranche A
    Letter of Credit issued by Bank of America, N.A., and outstanding in the
    face amount of $2,097,839.06 on and as of the Seventh Amendment Effective
    Date, as such Letters of Credit may be amended by the Hennepin L/C
    Amendments, and as such Letters of Credit may thereafter be amended,
    supplemented, extended, replaced or otherwise modified to the extent
    permitted hereunder.

                  "Hennepin Project" means the resource recovery Project in
    Hennepin County, Minnesota.

                  "Hennepin Project Guaranty" means a guaranty, which guaranty
    shall be in form and substance satisfactory to Agents, by Company of CHERC's
    obligations under the New Hennepin Service Agreement.

                  "Hennepin Project Restructuring" means, collectively, (i) the
    purchase by Hennepin County of the ownership interest in the resource
    recovery facilities for the Hennepin Project, (ii) the termination of the
    existing facility lease agreement, service agreement, project guaranty, loan
    agreement, ground lease, site lease and other ancillary agreements relating
    to the existing lease of the Hennepin Project pursuant to agreement among
    CHERC, Company, Hennepin County and GECC, (iii) the execution and delivery
    by CHERC and Hennepin County of the New Hennepin Service Agreement, and (iv)
    the execution and delivery by Company of the Hennepin Project Guaranty, in
    the case of each of clauses (i) through (iv) pursuant to documentation in
    form and substance satisfactory to Agents.

                  "Hennepin Project Restructuring Conditions" means,
    collectively, (i) the consummation of the Hennepin Project Restructuring,
    (ii) the amendment of the Hennepin Letters of Credit concurrently with the
    consummation of the Hennepin Project Restructuring, to reflect the Hennepin
    L/C Amendments, (iii) delivery by Company to Agents of an Officer's
    Certificate certifying that the requirements of the Hennepin Project
    Restructuring set forth in clauses (i) through (iv) of the definition of
    "Hennepin Project Restructuring" have been met and that CHERC and Company
    have no outstanding or further obligations to GECC under the agreements
    described in clause (ii) of such definition (collectively, the "Terminated
    Hennepin Agreements") except for indemnity obligations owed by CHERC (and
    guarantied by Company) to GECC against third party claims relating to the
    operation by CHERC of the Hennepin Project, which obligations expressly
    survive the termination of the relevant agreements, (iv) the waiver of all
    claims (except claims for indemnity obligations owed by CHERC to GECC
    against third party claims relating to the operation by CHERC of the
    Hennepin Project) against Company and its Subsidiaries by GECC arising out
    of or related to the Terminated Hennepin Agreements, the acknowledgement by
    Hennepin County that it has no current claims against CHERC or Company
    arising from the termination of the Terminated Hennepin Agreements, and
    delivery of written evidence of such waiver and acknowledgement in form and
    substance satisfactory to Agents, and (v) delivery to Agents of written
    evidence in form and substance satisfactory to Agents that all claims by
    Hennepin County against any Borrower under the Hennepin Project Guaranty or
    under the New Service Agreement or otherwise arising out of the Hennepin
    Project upon or after consummation of the Hennepin Project Restructuring
    shall be treated as general unsecured prepetition claims in the Chapter 11
    Cases (subject to Hennepin County's right to draw on the Hennepin Letters of
    Credit).

                  "Hennepin Restructuring Liens" means Liens to be granted by
    CHERC on certain spare parts and movable equipment maintained or used at the
    Hennepin Project, to secure CHERC's obligations under the New Hennepin
    Service Agreement.

                  "New Hennepin Service Agreement" means an operating or service
    agreement between CHERC and Hennepin County, Minnesota relating to the
    resource recovery facilities for the Hennepin Project, which service or
    operating agreement shall be in form and substance satisfactory to Agents
    and shall be substantially similar to the existing service agreement between
    CHERC and Hennepin County, except that such agreement between CHERC and
    Hennepin County shall provide, among other things, that (i) CHERC shall
    credit against the monthly service fee payable by Hennepin County to CHERC
    under the New Hennepin Service Agreement an amount equal to $202,000 for
    each such month as a "Fee Credit", (ii) in the event of termination of the
    New Hennepin Service Agreement due to certain defaults by CHERC, Hennepin
    County shall be entitled to draw the entire amount of the Hennepin Letters
    of Credit and CHERC shall be required to make an additional payment to
    Hennepin County equal to the lesser of $5,000,000 and the aggregate amount
    of remaining "Fee Credits" referred to above that would have been applied
    under the New Hennepin Service Agreement, but for termination, through June
    2010, (iii) CHERC shall, effective upon the effective date of a plan of
    reorganization for Company, grant the Hennepin Restructuring Liens, (iv) the
    requirements relating to the Hennepin Letters of Credit shall be modified as
    set forth in the Hennepin L/C Amendments, (v) Company shall enter into the
    Hennepin Project Guaranty, (vi) CHERC shall, subject to the approval of the
    Federal Energy Regulatory Commission, assign to Hennepin County its interest
    in the power purchase agreement with XCEL Energy Corporation (formerly known
    as Northern States Power Company) relating to the Hennepin Project, and
    (vii) CHERC shall have no option to purchase the Hennepin Project
    facilities.

                  "Seventh Amendment" means the Seventh Amendment to
    Debtor-in-Possession Credit Agreement and Limited Consent by and among
    Borrowers, Agents and Lenders, dated as of May 23, 2003.

                  "Seventh Amendment Effective Date" has the meaning assigned to
    that term in Section 2 of the Seventh Amendment.

                  "Tranche A Letter of Credit Sublimit" means (i) prior to the
    Sixth Amendment Effective Date, $14,200,000; (ii) on and after the Sixth
    Amendment Effective Date but prior to the Seventh Amendment Effective Date,
    $12,200,000; (iii) on and after the Seventh Amendment Effective Date,
    $12,200,000 minus (x) immediately upon consummation of the Hennepin Project
    Restructuring, $2,098,000 and (y) on any date thereafter, the amount of any
    permanent reductions that shall have occurred with respect to the
    outstanding face amount of the Hennepin Letter of Credit referred to in
    clause (iii) of the definition of "Hennepin Letters of Credit", unless a
    greater amount shall be approved in writing by Agents and Requisite Class
    Lenders of the Class of Tranche A Lenders (which approval shall be at the
    sole discretion of such Agents and Lenders and shall be evidenced by an
    amendment to this Agreement in form reasonably satisfactory to Agents and
    such Lenders) from time to time upon a request from Borrowers to increase
    such amount; provided, however, that no such increase shall cause the
    Tranche A Letter of Credit Sublimit to exceed the total amount of the
    Tranche A Commitments minus the outstanding amount of Tranche A Loans
    (excluding Tranche A Loans made pursuant to subsection 3.3B).

                  1.2 Provisions Relating to Tranche A Commitments.

                  Subsection 2.1A(i) of the Credit Agreement is hereby further
amended by adding (immediately prior to the ";" immediately preceding the last
proviso to the second sentence thereof) the following new proviso:

         "; provided, further, however, that after the Seventh Amendment
         Effective Date, the aggregate amount of the Tranche A Commitments shall
         be further reduced by the amount of any reduction to the Tranche A
         Letter of Credit Sublimit pursuant to clause (iii) of the definition of
         "Tranche A Letter of Credit Sublimit", and the Tranche A Commitments of
         Lenders shall be ratably reduced to reflect such reduction in the
         aggregate amount of the Tranche A Commitments."

                  1.3 Provisions Relating to Tranche B Letters of Credit.

                  Subsection 3.1A of the Credit Agreement is hereby amended by
adding at the end thereof the following new paragraph (iii):

                  "(iii) Hennepin Letters of Credit. Notwithstanding anything
         contained herein to the contrary, (1) the Hennepin Letters of Credit
         shall be amended in connection with the consummation of the Hennepin
         Project Restructuring to reflect the Hennepin L/C Amendments, (2) such
         Hennepin Letters of Credit as so amended shall continue to constitute
         Tranche A Letters of Credit or Tranche B Letters of Credit, as the case
         may be, for all purposes of this Agreement and the Loan Documents, and
         (3) any replacement or extension of any such Tranche B Letter of Credit
         shall be deemed to satisfy the requirements of subsection 3.1A(ii)(b)
         above if such Tranche B Letter of Credit as so extended or replaced is
         substantially identical to the relevant Hennepin Letter of Credit as so
         amended."

                  1.4      Provisions Relating to Affirmative Covenants.

                  Subsection 6.8B of the Credit Agreement is hereby amended by
adding at the end thereof the following sentence:

         "Notwithstanding the foregoing, Borrowers shall be deemed in compliance
         with this subsection 6.8B with respect to the Subsidiaries of Company
         listed on Schedule 6.8B annexed hereto (if and to the extent that each
         or any of such Subsidiaries becomes a Borrower in May 2003) even if
         Company (x) fails to comply or fails to timely comply with one or more
         requirements set forth in clause (i) of the preceding sentence and/or
         (y) fails to deliver or fails to timely deliver an opinion of counsel
         with respect to one or more of the matters described in clause (iii) of
         the preceding sentence, so long as Company exercises best efforts to
         comply with all such requirements and each failure to so comply or
         deliver or timely comply or deliver described in clause (x) or (y) is
         consented to in writing by Agents in their sole discretion."

                  1.5 Provisions Relating to Negative Covenants.

                  A. Subsection 7.2A of the Credit Agreement is hereby amended
by (i) deleting the "and" at the end of paragraph (ix) thereof, (ii) deleting
the "." at the end of paragraph (x) thereof and substituting therefor "; and"
and (iii) adding at the end thereof the following new paragraph (xi):

                  "(xi) Company and CHERC may enter into an agreement to grant
         the Hennepin Restructuring Liens effective upon the effective date of a
         plan of reorganization for Company, so long as (a) such agreement is
         entered into concurrently with the consummation of the Hennepin Project
         Restructuring and (b) the Hennepin Project Restructuring Conditions are
         satisfied.".

                  B. Subsection 7.4 of the Credit Agreement is hereby further
amended by (i) deleting the "and" at the end of paragraph (v) thereof, (ii)
deleting the "." at the end of paragraph (vi) thereof and substituting therefor
"; and" and (iii) adding at the end thereof the following new paragraph (vii):

                  "(vii) Company may become and remain liable with respect to
         the Hennepin Project Guaranty concurrently with the consummation of the
         Hennepin Project Restructuring, so long as the Hennepin Project
         Restructuring Conditions are satisfied."

                  C. Subsection 7.7 of the Credit Agreement is hereby amended by
adding immediately after the end of the last sentence thereof the following new
sentence:

         "Nothing in this subsection 7.7 shall prohibit Borrowers and their
         Subsidiaries from consummating the Hennepin Project Restructuring, so
         long as the Hennepin Project Restructuring Conditions are satisfied."

                  D. Subsection 7.14A of the Credit Agreement is hereby amended
by adding at the end thereof the following new sentence:

         "Nothing in this subsection 7.14A shall prohibit Company and its
         Subsidiaries, after the Seventh Amendment Effective Date, from
         consummating the Hennepin Project Restructuring, so long as the
         Hennepin Project Restructuring Conditions are satisfied."

         1.6 Provisions Relating to Events of Default.

                  A. Subsection 8.6 of the Credit Agreement is hereby amended by
adding immediately prior to the ";" at the end thereof the following new
parenthetical phrase:

         "(provided, however, that neither the consummation of the Hennepin
         Project Restructuring nor the filing of any motion, application or
         other petition to effect any order or consent to consummate the
         Hennepin Project Restructuring shall constitute an Event of Default
         under this subsection 8.6 so long as the Hennepin Project Restructuring
         Conditions are satisfied)".

                  B. Subsection 8.15 of the Credit Agreement is hereby amended
by adding immediately prior to the ":" at the end thereof the following new
parenthetical phrase:

         "(provided, however, that the consummation of the Hennepin Project
         Restructuring shall not constitute an Event of Default under this
         subsection 8.15 so long as the Hennepin Project Restructuring
         Conditions are satisfied)".

         1.7 Provisions Relating to Schedules.

                  A. The Credit Agreement is hereby amended by adding thereto a
new Schedule 6.8B in the form attached hereto as Annex A.

                  B. Immediately upon consummation of the Hennepin Project
Restructuring, Schedule 3.1A(i) to the Credit Agreement shall be amended by
deleting the first of the rows referencing the "Hennepin - WTE - Lease Reserve -
2,098 Annual step up requirement" under the heading "I. Additional L/C
Requirements".

         1.8 Limited Consent to Hennepin L/C Amendments.

                  Each of the undersigned Lenders, both in its capacity as a
Lender and as a Prepetition Lender, hereby (i) consents to the Hennepin L/C
Amendments in connection with consummation of the Hennepin Project
Restructuring, and (ii) acknowledges that the Hennepin L/C Amendments shall in
no way diminish or otherwise affect (x) such Lender's irrevocable participations
in the Hennepin Letters of Credit and in any drawings thereunder purchased
pursuant to subsection 3.1C of the Credit Agreement or (y) such Lender's
obligation to fund its participations in any unreimbursed drawings thereunder in
accordance with the terms applicable to Tranche A Letters of Credit or Tranche B
Letters of Credit, as the case may be, under the Credit Agreement, including
subsection 3.3C thereof, and (iii) acknowledges that the Hennepin Letters of
Credit, as amended by the Hennepin L/C Amendments, shall continue to be, for all
purposes of the Credit Agreement and the other Loan Documents, Tranche A Letters
of Credit or Tranche B Letters of Credit, as the case may be. The consent set
forth in this paragraph shall be limited precisely as written, and this consent
does not constitute, nor should it be construed as, a waiver of compliance by
Borrowers or Lenders with respect to (a) subsection 3.1A(i) or 3.1A(ii) of the
Credit Agreement in any other instance, or (b) any other term, provision or
condition of the Credit Agreement or any other instrument or agreement referred
to therein.

         SECTION 2. CONDITIONS TO EFFECTIVENESS

                  Section 1 of this Amendment shall only become effective upon
the first date on which all of the following conditions precedent shall have
been satisfied (the date of satisfaction of such conditions being referred to
herein as the "Seventh Amendment Effective Date"):

         2.1 Payment of Expenses. Borrowers shall have paid in full all
outstanding statements for fees and expenses of O'Melveny & Myers LLP and Ernst
& Young Corporate Finance LLC, to the extent submitted to Company prior to 12:00
Noon (New York City time) on May 30, 2003.

         2.2 Bankruptcy Court Approval. The Bankruptcy Court shall have approved
the Hennepin Project Restructuring and the Hennepin L/C Amendments pursuant to
one or more orders in form and substance satisfactory to Agents.

         SECTION 3. BORROWERS' REPRESENTATIONS AND WARRANTIES

                  In order to induce the Lenders to enter into this Amendment
and to amend the Credit Agreement in the manner provided herein, Borrowers
represent and warrant to each Lender that the following statements are true,
correct and complete:

         3.1 Corporate Power and Authority. Subject to compliance with the Final
Borrowing Order and any applicable provisions of the Bankruptcy Code, each Loan
Party has all requisite corporate power and authority to enter into this
Amendment and to carry out the transactions contemplated by, and perform its
obligations under, the Credit Agreement as amended by this Amendment
(collectively, the "Amended Agreement").

         3.2 Authorization of Agreements. The execution and delivery of this
Amendment have been duly authorized by all necessary corporate action on the
part of each Loan Party and the performance of the Amended Agreement has been
duly authorized by all necessary corporate action on the part of each Loan
Party.

         3.3 No Conflict. The execution and delivery by each Loan Party of this
Amendment and the performance by each Borrower of the Amended Agreement do not
and will not (i) violate any provision of any law or any governmental rule or
regulation applicable to Company or any of its Subsidiaries, the Organizational
Documents of Company or any of its Subsidiaries or any order, judgment or decree
of any court or other Government Authority binding on Company or any of its
Subsidiaries, (ii) conflict with, result in a breach of or constitute (with due
notice or lapse of time or both) a default under any Contractual Obligation
(which Contractual Obligation is enforceable on a post-Petition Date basis) of
Company or any of its Subsidiaries or an applicable order of the Bankruptcy
Court, (iii) result in or require the creation or imposition of any Lien upon
any of the properties or assets of Company or any of its Subsidiaries, or (iv)
require any approval of stockholders or any approval or consent of any Person
under any Contractual Obligation of Company or any of its Subsidiaries.

         3.4 Governmental Consents. The execution and delivery by each Loan
Party of this Amendment and the performance by each Loan Party of the Amended
Agreement do not and will not require any Governmental Authorization.

         3.5 Binding Obligation. This Amendment has been duly executed and
delivered by each Loan Party, and each of this Amendment and the Amended
Agreement is the legally valid and binding obligations of each Loan Party
enforceable against each Loan Party in accordance with its respective terms,
except as may be limited by bankruptcy, insolvency, reorganization, moratorium
or similar laws relating to or limiting creditors' rights generally or by
equitable principles relating to enforceability.

         3.6 Incorporation of Representations and Warranties From Credit
Agreement. The representations and warranties contained in Section 5 of the
Credit Agreement are and will be true, correct and complete in all material
respects on and as of the Seventh Amendment Effective Date to the same extent as
though made on and as of that date, except to the extent such representations
and warranties specifically relate to an earlier date, in which case they were
true, correct and complete in all material respects on and as of such earlier
date.

         3.7 Notice to Committee. Notice of this Amendment has been given to and
received by counsel to the official committee of unsecured creditors in the
Chapter 11 Cases and the informal committee of holders of Company's 9.25%
Debentures.

         3.8 Absence of Default. As of the date hereof after giving effect
hereto, there exists no Event of Default or Potential Event of Default under the
Credit Agreement.

         SECTION 4. ACKNOWLEDGEMENT AND CONSENT

         4.1 Each Borrower and Subsidiary Guarantor hereby (i) acknowledges that
such Loan Party has read this Amendment and consents to the terms hereof and
further hereby confirms and agrees that, notwithstanding the effectiveness of
this Amendment, the obligations of such Loan Party under each of the Loan
Documents to which such Loan Party is a party shall not be impaired and each of
the Loan Documents to which such Loan Party is a party are, and shall continue
to be, in full force and effect and are hereby confirmed and ratified in all
respects, (ii) ratifies and confirms the effectiveness of the First Amendment,
the Second Amendment, the Third Amendment, the Fourth Amendment, the Fifth
Amendment and the Sixth Amendment in all respects, and (iii) confirms that the
provisions of the First Amendment, the Second Amendment the Third Amendment, the
Fourth Amendment, the Fifth Amendment and the Sixth Amendment are binding on
each of the Borrowers.

         4.2 For the avoidance of doubt, each Borrower and Subsidiary Guarantor
hereby further acknowledges that (i) the Hennepin L/C Amendments shall in no way
diminish or otherwise affect Borrowers' obligation to reimburse any drawings
under the Hennepin Letters of Credit and to pay fees with respect thereto in
accordance with the terms applicable to Tranche B Letters of Credit or Tranche A
Letters of Credit, as the case may be, under the Credit Agreement and the other
Loan Documents, (ii) the Hennepin Letters of Credit, as amended by the Hennepin
L/C Amendments, shall continue to be, for all purposes of the Credit Agreement,
the other Loan Documents and the Borrowing Orders, Tranche B Letters of Credit
or Tranche A Letters of Credit, as the case may be, and (iii) without limiting
the generality of the foregoing, the Obligations of Borrowers with respect to
the Hennepin Letters of Credit, as amended by the Hennepin L/C Amendments, shall
continue to have the same superpriority, allowed administrative expense claim
status as all other Obligations of Borrowers with respect to the Tranche A
Letters of Credit and Tranche B Letters of Credit.

         SECTION 5. MISCELLANEOUS

         5.1 Reference to and Effect on the Credit Agreement and the Other Loan
             Documents.

             A. On and after the Seventh Amendment Effective Date, each
reference in the Credit Agreement to "this Agreement", "hereunder", "hereof",
"herein" or words of like import referring to the Credit Agreement, and each
reference in the other Loan Documents to the "Credit Agreement", "thereunder",
"thereof" or words of like import referring to the Credit Agreement shall mean
and be a reference to the Credit Agreement as amended by this Amendment.

             B. Except as specifically amended by this Amendment, the Credit
Agreement and the other Loan Documents shall remain in full force and effect and
are hereby ratified and confirmed.

             C. The execution, delivery and performance of this Amendment shall
not constitute a waiver of any provision of, or operate as a waiver of any
right, power or remedy of any Agent or any Lender under, the Credit Agreement or
any of the other Loan Documents.

         5.2 Fees and Expenses. Each Borrower acknowledges that all costs, fees
and expenses as described in subsection 10.2 of the Credit Agreement incurred by
Administrative Agent, Documentation Agent or the Lenders and their respective
counsel (including, without limitation, O'Melveny & Myers LLP and Ernst & Young
Corporate Finance LLC) with respect to this Amendment and the documents and
transactions contemplated hereby shall be for the account of Borrowers.

         5.3 Headings. Section and subsection headings in this Amendment are
included herein for convenience of reference only and shall not constitute a
part of this Amendment for any other purpose or be given any substantive effect.

         5.4 Applicable Law. THIS AMENDMENT AND THE RIGHTS AND OBLIGATIONS OF
THE PARTIES HEREUNDER SHALL BE GOVERNED BY, AND SHALL BE CONSTRUED AND ENFORCED
IN ACCORDANCE WITH, THE INTERNAL LAWS OF THE STATE OF NEW YORK (INCLUDING
WITHOUT LIMITATION SECTION 5-1401 OF THE GENERAL OBLIGATIONS LAW OF THE STATE OF
NEW YORK), WITHOUT REGARD TO CONFLICTS OF LAWS PRINCIPLES.

         5.5 Counterparts; Effectiveness. This Amendment may be executed in any
number of counterparts and by different parties hereto in separate counterparts,
each of which when so executed and delivered shall be deemed an original, but
all such counterparts together shall constitute but one and the same instrument;
signature pages may be detached from multiple separate counterparts and attached
to a single counterpart so that all signature pages are physically attached to
the same document. This Amendment (other than Section 1 hereof, the
effectiveness of which shall be governed by Section 2) shall become effective
upon the first date on which: (i) Borrowers, each Subsidiary Guarantor and all
Lenders (except that Section 1.4 of this Amendment shall require only Requisite
Lenders) shall have each executed a counterpart hereof, and (ii) Company,
Administrative Agent and Documentation Agent shall have received written or
telephonic notification of such execution and authorization of delivery of such
counterparts.

               [Remainder of this page intentionally left blank]

<PAGE>

                  IN WITNESS WHEREOF, the parties hereto have caused this
Amendment to be duly executed and delivered by their respective officers
thereunto duly authorized as of the date first written above.

BORROWERS:

                                        COVANTA ENERGY CORPORATION

                                        By:  /s/ Jeffrey R. Horowitz
                                             --------------------------------
                                             Jeffrey R. Horowitz
                                             Authorized Officer

                                        Each of the entities named on Schedule A
                                        annexed hereto, as Borrowers

                                        By:  /s/ Jeffrey R. Horowitz
                                             --------------------------------
                                             Jeffrey R. Horowitz
                                             Authorized Officer

                                        Each of the entities named on Schedule B
                                        annexed hereto, as Borrowers

                                        By:  /s/ Scott Mackin
                                             --------------------------------
                                             Scott Mackin
                                             Authorized Officer

<PAGE>

SUBSIDIARY GUARANTORS:

                                        Each of the entities named on Schedule C
                                        annexed hereto, as Subsidiary Guarantors

                                        By:  /s/ Jeffrey R. Horowitz
                                             --------------------------------
                                             Jeffrey R. Horowitz
                                             Authorized Officer

<PAGE>

                                        Each of the entities named on Schedule D
                                        annexed hereto, as Subsidiary Guarantors

                                        By:  /s/ Scott Mackin
                                             --------------------------------
                                             Scott Mackin
                                             Authorized Officer

<PAGE>

AGENTS AND LENDERS:

                                        BANK OF AMERICA, N.A.,
                                        as Administrative Agent and Co-Arranger
                                        and as a Lender

                                        By:  /s/ Michael R. Heredia
                                             --------------------------------
                                             Michael R. Heredia
                                             Managing Director

<PAGE>

                                        DEUTSCHE BANK AG, NEW YORK BRANCH,
                                        as Documentation Agent and Co-Arranger
                                        and as a Lender

                                        By:  /s/ Clark Peterson
                                             --------------------------------
                                             Clark Peterson
                                             Vice President

                                        By:  /s/ Robert Wood
                                             --------------------------------
                                             Robert Wood
                                             Director

<PAGE>

                                        BAYERISCHE HYPO-UND VEREINSBANK AG,
                                        as a Lender

                                        By:  /s/ A.W. Seidel
                                             --------------------------------
                                             Name: A.W. Seidel
                                             Title: Managing Director

                                        By:  /s/ John W. Sweeney
                                             --------------------------------
                                             Name: John W. Sweeney
                                             Title: Director
<PAGE>
                                        COMMERZBANK AG, NEW YORK AND GRAND
                                        CAYMAN BRANCHES,
                                        as a Lender

                                        By:  /s/ Terrence P. Sweeney
                                             --------------------------------
                                             Name: Terrence P. Sweeney
                                             Title: Senior Vice President

                                        By:  /s/ Mary Harold
                                             --------------------------------
                                             Name: Mary Harold
                                             Title: Senior Vice President

<PAGE>

                                        CREDIT LYONNAIS NEW YORK BRANCH,
                                        as a Lender

                                        By:  /s/ James B. Hallock
                                             --------------------------------
                                             Name: James B. Hallock
                                             Title: Vice President

<PAGE>

                                        WACHOVIA BANK, NATIONAL ASSOCIATION,
                                        as a Lender

                                        By:  /s/ Joel Thomas
                                             --------------------------------
                                             Name: Joel Thomas
                                             Title: Director
<PAGE>
                                        HSBC BANK USA,
                                        as a Lender

                                        By:  /s/ Carol A. Kraus
                                             --------------------------------
                                             Name: Carol A. Kraus
                                             Title: Vice President

<PAGE>

                                        JPMORGAN CHASE BANK
                                        (formerly known as The Chase Manhattan
                                        Bank), as a Lender

                                        By:  /s/ Michael Lancia
                                             --------------------------------
                                             Name: Michael Lancia
                                             Title: Vice President
<PAGE>
                                        IIB BANK LTD, IFSC BRANCH,
                                        as a Lender

                                        By:  /s/ Brian Dunne
                                             --------------------------------
                                             Name: Brian Dunne
                                             Title:

                                        By:  /s/ Niall Murray
                                             --------------------------------
                                             Name: Niall Murray
                                             Title:

<PAGE>
                                       LANDESBANK HESSEN-THURINGEN GIROZENTRALE,
                                       as a Lender

                                       By:  /s/ David A. Leech
                                            --------------------------------
                                            Name: David A. Leech
                                            Title: Vice President

                                       By:  /s/ Shan Chakraborty
                                            --------------------------------
                                            Name: Shan Chakraborty
                                            Title: Assistant Vice President

<PAGE>
                                        BANC OF AMERICA SECURITIES LLC, as
                                        Agent for BANK OF AMERICA, N.A.,
                                        as a Lender

                                        By:  /s/ Peter Santry
                                             --------------------------------
                                             Name: Peter Santry
                                             Title:
<PAGE>

                                        SUNTRUST BANK,
                                        as a Lender

                                        By:  /s/ George A. Ways
                                             --------------------------------
                                             Name: George A. Ways
                                             Title: Managing Director

<PAGE>

                                        THE BANK OF NEW YORK,
                                        as a Lender

                                        By:  /s/ Peter W. Helt
                                             --------------------------------
                                             Name: Peter W. Helt
                                             Title: Vice President

<PAGE>

                                        THE BANK OF NOVA SCOTIA,
                                        as a Lender

                                        By:  /s/ Christopher Usas
                                             --------------------------------
                                             Name: Christopher Usas
                                             Title: Director

<PAGE>
                                        UBS AG, STAMFORD BRANCH,
                                        as a Lender

                                        By:  /s/ Kelly Smith
                                             --------------------------------
                                             Name: Kelly Smith
                                             Title: Director

                                        By:  /s/ Robert Reuter
                                             --------------------------------
                                             Name: Robert Reuter
                                             Title: Executive Director

<PAGE>

                                        U.S. BANK NATIONAL ASSOCIATION
                                        (formerly known as Firstar Bank, N.A.),
                                        as a Lender

                                        By:  /s/ Alan R. Milster
                                             --------------------------------
                                             Name: Alan R. Milster
                                             Title: Vice President

<PAGE>
                                      WESTLB AG (formerly known as Westdeutsche
                                      Landesbank Girozentrale), NEW YORK BRANCH,
                                      as a Lender

                                      By:  /s/ Duncan M. Robertson
                                           ----------------------------------
                                           Name: Duncan M. Robertson
                                           Title: Director

                                      By:  /s/ Alan S. Bookspan
                                           ----------------------------------
                                           Name: Alan S. Bookspan
                                           Title: Director

<PAGE>

                                    MERRILL LYNCH, PIERCE & SMITH, INCORPORATED,
                                    as a Lender

                                    By:  /s/ Graham Goldsmith
                                         ------------------------------------
                                         Name: Graham Goldsmith
                                         Title: Managing Director

<PAGE>
                                       SPECIAL SITUATIONS INVESTING GROUP, INC.,
                                       as a Lender

                                       By:  /s/ Michael Mansour
                                            ---------------------------------
                                            Name: Michael Mansour
                                            Title: Authorized Signatory

<PAGE>

                                        BEAR STEARNS & CO. INC.,
                                        as a Lender

                                        By:  /s/ John E. McDermott
                                             --------------------------------
                                             Name: John E. McDermott
                                             Title: Senior Managing Director

<PAGE>

                                   Schedule A
                                 Other Borrowers

1.  AMOR 14 Corp.
2.  Covanta Acquisition, Inc.
3.  Covanta Alexandria/Arlington, Inc.
4.  Covanta Babylon, Inc.
5.  Covanta Bessemer, Inc.
6.  Covanta Bristol, Inc.
7.  Covanta Cunningham Environmental Support, Inc.
8.  Covanta Energy Americas, Inc.
9.  Covanta Energy Construction, Inc.
10. Covanta Energy Resource Corp.
11. Covanta Energy Sao Jeronimo, Inc.
12. Covanta Energy Services, Inc.
13. Covanta Energy West, Inc.
14. Covanta Engineering Services, Inc.
15. Covanta Fairfax, Inc.
16. Covanta Financial Services, Inc.
17. Covanta Geothermal Operations Holdings, Inc.
18. Covanta Geothermal Operations, Inc.
19. Covanta Heber Field Energy, Inc.
20. Covanta Hennepin Energy Resource Co., L.P.
21. Covanta Hillsborough, Inc.
22. Covanta Honolulu Resource Recovery Venture
23. Covanta Huntington Limited Partnership
24. Covanta Huntington Resource Recovery One Corp.
25. Covanta Huntington Resource Recovery Seven Corp.
26. Covanta Huntington, Inc.
27. Covanta Huntsville, Inc.
28. Covanta Hydro Energy, Inc.
29. Covanta Hydro Operations West, Inc.
30. Covanta Hydro Operations, Inc.
31. Covanta Imperial Power Services, Inc.
32. Covanta Indianapolis, Inc.
33. Covanta Kent, Inc.
34. Covanta Key Largo, Inc.
35. Covanta Lake, Inc.
36. Covanta Lancaster, Inc.
37. Covanta Lee, Inc.
38. Covanta Long Island, Inc.
39. Covanta Marion Land Corp.
40. Covanta Marion, Inc.
41. Covanta Mid-Conn., Inc.
42. Covanta Montgomery, Inc.
43. Covanta New Martinsville Hydro-Operations Corp.
44. Covanta Northwest Puerto Rico, Inc.
45. Covanta Oahu Waste Energy Recovery, Inc.
46. Covanta Oil & Gas, Inc.
47. Covanta Onondaga Five Corp.
48. Covanta Onondaga Four Corp.
49. Covanta Onondaga Limited Partnership
50. Covanta Onondaga Operations, Inc.
51. Covanta Onondaga Three Corp.
52. Covanta Onondaga Two Corp.
53. Covanta Onondaga, Inc.
54. Ogden Services Corporation
55. Covanta Operations of Union LLC
56. Covanta OPW Associates, Inc.
57. Covanta OPWH, Inc.
58. Covanta Pasco, Inc.
59. Covanta Plant Services of New Jersey, Inc.
60. Covanta Power Development of Bolivia, Inc.
61. Covanta Power Development, Inc.
62. Covanta Power Equity Corp.
63. Covanta Projects of Hawaii, Inc.
64. Covanta Projects of Wallingford, LP
65. Covanta RRS Holdings, Inc.
66. Covanta Secure Services USA, Inc.
67. Covanta Secure Services, Inc.
68. Covanta SIGC Energy II, Inc.
69. Covanta SIGC Energy, Inc.
70. Covanta SIGC Geothermal Operations, Inc.
71. Covanta Stanislaus, Inc.
72. Covanta Systems, Inc.
73. Covanta Tampa Bay, Inc.
74. Covanta Tulsa, Inc.
75. Covanta Union, Inc.
76. Covanta Wallingford Associates, Inc.
77. Covanta Warren Energy Resources Co., LP
78. Covanta Waste Solutions, Inc.
79. Covanta Waste to Energy of Italy, Inc.
80. Covanta Waste to Energy, Inc.
81. Covanta Water Holdings, Inc.
82. Covanta Water Systems, Inc.
83. Covanta Water Treatment Services, Inc.
84. DSS Environmental, Inc.
85. ERC Energy II, Inc.
86. ERC Energy, Inc.
87. Heber Field Company
88. Heber Field Energy II, Inc.
89. Heber Geothermal Company
90. Heber Loan Partners
91. J.R. Jacks Construction Corp.
92. Ogden Constructors, Inc.
93. Ogden Environmental & Energy Services Co., Inc.
94. OPI Quezon, Inc.
95. Second Imperial Geothermal Co., L.P.
96. Three Mountain Operations, Inc.
97. Three Mountain Power LLC

<PAGE>

                                   Schedule B
                                 Other Borrowers

1.  Ogden Facility Management Corporation of Anaheim
2.  LaGuardia Fuel Facilities Corp.
3.  Lenzar Electro-Optics, Inc.
4.  Newark Automotive Fuel Facilities Corporation, Inc.
5.  Ogden Allied Abatement & Decontamination Service, Inc.
6.  Ogden Allied Maintenance Corp.
7.  Ogden Allied Payroll Services, Inc.
8.  Ogden Attractions, Inc.
9.  Aviation Distributing Corp.
10. Ogden Aviation Fueling Company of Virginia, Inc.
11. Ogden Aviation Service Company of Colorado, Inc.
12. Ogden Aviation Service Company of New Jersey, Inc.
13. Ogden Aviation Service Company of New York, Inc.
14. Ogden Aviation Service Company of Pennsylvania, Inc.
15. Ogden Aviation Service International Corporation
16. Ogden Aviation, Inc.
17. Ogden Cargo Spain, Inc.
18. Ogden Central and South America, Inc.
19. Ogden Facility Holdings, Inc.
20. Ogden Film and Theatre, Inc.
21. Ogden Firehole Entertainment Corp.
22. Ogden International Europe, Inc.
23. Ogden New York Services, Inc.
24. Ogden Support Services, Inc.
25. PA Aviation Fuel Holdings, Inc.
26. Philadelphia Fuel Facilities Corporation

<PAGE>

                                   Schedule C
                              Subsidiary Guarantors

1.  Covanta Energy Group, Inc.
2.  Covanta Energy International, Inc.
3.  Covanta Equity of Stanislaus, Inc.
4.  Covanta Haverhill Properties, Inc.
5.  Covanta Haverhill, Inc.
6.  Covanta Omega Lease, Inc.
7.  Covanta Power International Holdings, Inc.
8.  Covanta Projects, Inc.
9.  Haverhill Power, Inc.
10. LMI, Inc. 11. Michigan Waste Energy, Inc.
12. OFS Equity of Alexandria/Arlington, Inc.
13. OFS Equity of Babylon, Inc.
14. OFS Equity of Delaware, Inc.
15. OFS Equity of Huntington, Inc.
16. OFS Equity of Indianapolis, Inc.
17. OFS Equity of Stanislaus, Inc.
18. Ogden Management Services, Inc.
19. Covanta Equity of Alexandria/Arlington, Inc.

<PAGE>

                                   Schedule D
                              Subsidiary Guarantors

1.  Ogden Technology Services Corporation
2.  Ogden Transition Corporation

<PAGE>

                                     Annex A

                                  Schedule 6.8B

1.  Alpine Food Products, Inc.
2.  BDC Liquidating Corp.
3.  Bouldin Development Corp.
4.  Covanta Energy Group, Inc.
5.  Covanta Energy International, Inc.
6.  Covanta Equity of Alexandria/Arlington, Inc.
7.  Covanta Equity of Stanislaus, Inc.
8.  Covanta New Martinsville Hydroelectric Corp.
9.  Covanta Power International Holdings, Inc.
10. Covanta Projects, Inc.
11. Doggie Diner, Inc.
12. Gulf Coast Catering Company, Inc.
13. Logistics Operations, Inc.
14. Offshore Food Service, Inc.
15. OFS Equity of Alexandria/Arlington, Inc.
16. OFS Equity of Babylon, Inc.
17. OFS Equity of Delaware, Inc.
18. OFS Equity of Huntington, Inc.
19. OFS Equity of Indianapolis, Inc.
20. OFS Equity of Stanislaus, Inc.
21. Ogden Aviation Security Services of Indiana, Inc.
22. Ogden Aviation Terminal Services, Inc.
23. Ogden Cisco, Inc.
24. Ogden Communications, Inc.
25. Ogden Facility Management Corporation of West Virginia
26. Ogden Food Service Corporation of Indiana, Inc.
27. Ogden Food Service Corporation of Milwaukee, Inc.
28. Ogden Leisure, Inc.
29. Ogden Management Services, Inc.
30. Ogden MEI, LLC
31. Ogden Pipeline Service Corporation
32. Ogden Technology Services Corporation
33. Ogden Transition Corporation

<PAGE>

                                     Annex B

                         Form of Hennepin L/C Amendments

                                  See attached.

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