EXECUTION COPY FOURTH AMENDMENT (this "AMENDMENT") dated as of March 21, 2003 to the Second Amended and Restated Debtor in Possession Credit Agreement, initially dated as of June 11, 2000, amended and restated as of July 19, 2000 and as further amended and restated as of March 22, 2002 and amended by the First Amendment dated as of September 3, 2002, the Second Amendment dated as of September 6, 2002 and the Third Amendment dated as of October 24, 2002 (the "CREDIT AGREEMENT") among SAFETY-KLEEN SERVICES, INC., a Delaware corporation (the "BORROWER"), the financial institutions or entities from time to time parties to this Agreement (the "LENDERS"), THE TORONTO-DOMINION BANK, HOUSTON AGENCY and TORONTO DOMINION (TEXAS), INC., as letter of credit issuing banks (the "ISSUING LENDERS"), TORONTO DOMINION (TEXAS), INC., as administrative agent (the "GENERAL ADMINISTRATIVE AGENT") and THE CIT GROUP/BUSINESS CREDIT, INC. ("CIT"), as collateral agent and underwriter (the "COLLATERAL AGENT"). W I T N E S S E T H: - - - - - - - - - - WHEREAS, pursuant to the Credit Agreement, the Lenders have agreed to make, and have made, certain loans and other extensions of credit to the Borrower; WHEREAS, the Borrower has requested that the General Administrative Agent and the Lenders agree to extend the expiration date of the Lenders' commitments upon the terms and subject to the conditions set forth herein; and WHEREAS, the General Administrative Agent and the Lenders have agreed to the extension only upon the terms and subject to the conditions set forth herein. NOW, THEREFORE, in consideration of the premises and the mutual covenants contained herein and in the Credit Agreement, the parties hereto hereby agree as follows: 1. DEFINED TERMS. Unless otherwise defined herein, all capitalized terms used herein shall have the meanings given to them in the Credit Agreement. 2. AMENDMENT TO SECTION 1.1. Section 1.1 of the Credit Agreement is hereby amended by deleting the term "Termination Date" and replacing it with the following: "TERMINATION DATE": the earliest to occur of (a) July 31, 2003, (b) the effective date of a Plan of Reorganization, and (c) the earlier termination of the Revolving Credit Commitments in accordance with the terms hereof." 3. REDUCTION OF REVOLVING CREDIT COMMITMENT. (a) On the Effective Date (as defined below), each Lender's Tranche A Revolving Credit Commitment shall be reduced on a PRO RATA basis such that the aggregate Tranche A Revolving Credit Commitments of all Lenders is equal to $50,000,000. (b) On the Effective Date (as defined below), each Lender's Tranche B Revolving Credit Commitment shall be reduced on a PRO RATA basis such that the aggregate Tranche B Revolving Credit Commitments of all Lenders is equal to $100,000,000. (c) Schedule 1.1A of the Credit Agreement is hereby deleted in its entirety and replaced with the attached Exhibit A. 2 4. REPRESENTATIONS AND WARRANTIES. After giving effect to this Amendment, the Borrower hereby represents and warrants that (i) all of the representations and warranties contained in the Credit Agreement are true and correct in all material respects as of the date hereof (unless stated to relate to a specific earlier date, in which case such representations and warranties shall be true and correct in all material respects as of such earlier date) and (ii) no Default or Event of Default has occurred and is continuing. 5. EFFECTIVENESS. This Amendment shall become effective on the date ("EFFECTIVE DATE") upon which (i) the General Administrative Agent shall have received counterparts hereof duly executed by the Borrower and each Lender and (ii) each Lender shall have received, in consideration for the execution of this Amendment, a fee equal to 2.50% of such Lender's Revolving Credit Commitments (as reduced pursuant to Section 3). 6. CONTINUING EFFECTS. Except as expressly amended hereby, the Credit Agreement shall continue to be and shall remain in full force and effect in accordance with its terms. 7. FEES AND EXPENSES. The Borrower agrees to pay and reimburse the General Administrative Agent for all of its reasonable out-of-pocket costs and expenses incurred in connection with the negotiation, preparation, execution, and delivery of this Amendment, including the reasonable fees and expenses of counsel. 8. COUNTERPARTS. This Amendment may be executed on any number of separate counterparts (including facsimile counterparts) and all of said counterparts taken together shall be deemed to constitute one and the same instrument. 9. HEADINGS. The headings of the sections of this Amendment are inserted for convenience only and shall not affect the interpretation hereof. 10. GOVERNING LAW. THIS AMENDMENT SHALL BE GOVERNED BY, AND CONSTRUED AND INTERPRETED IN ACCORDANCE WITH, THE LAW OF THE STATE OF NEW YORK. [BALANCE OF PAGE INTENTIONALLY BLANK] IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be duly executed and delivered by their proper and duly authorized officers as of the day and year first above written. SAFETY-KLEEN SERVICES, INC. By: /s/ Larry W. Singleton ------------------------------------- Name: Larry W. Singleton Title: EVP & CFO TORONTO DOMINION (TEXAS), INC., as General Administrative Agent, Issuing Lender, Underwriter and Lender By: /s/ Warren Finlay ------------------------------------- Name: Warren Finlay Title: President THE TORONTO-DOMINION BANK, HOUSTON AGENCY, as an Issuing Lender By: /s/ Warren Finlay ------------------------------------- Name: Warren Finlay Title: Director Credit THE CIT GROUP/BUSINESS CREDIT, INC., as Collateral Agent, Underwriter and Lender By: /s/ Mark J. Long ------------------------------------- Name: Mark J. Long Title: Vice President BANK ONE, NA, as a Lender By: /s/ Richard Babcock ------------------------------------- Name: Richard Babcock Title: First Vice President BEAR STEARNS & CO. INC., as a Lender By: /s/ John E. McDermott ------------------------------------- Name: John E. McDermott Title: Senior Managing Director CONTINENTAL CASUALTY COMPANY, as a Lender By: /s/ Marilou R. McGirr ------------------------------------- Name: Marilou R. McGirr Title: Vice President GOLDMAN SACHS CREDIT PARTNERS, L.P., as a Lender By: /s/ Mark DeNatale ------------------------------------- Name: Mark DeNatale Title: Authorized Signatory GSC RECOVERY II, L.P., as a Lender By: GSC Recovery II GP, L.P., its general partner By: GSC RII, LLC, its general partner By: GSCP (NJ) Holdings, L.P., its sole member By: GSCP (NJ), Inc., its general partner By: /s/ Robert A. Hamwee ------------------------------------- Name: Robert A. Hamwee Title: Managing Director GSC RECOVERY IIA, L.P., as a Lender By: GSC Recovery IIA GP, L.P., its general partner By: GSC RIIA, LLC, its general partner By: GSCP (NJ) Holdings, L.P., its sole member By: GSCP (NJ), Inc., its general partner By: /s/ Robert A. Hamwee ------------------------------------- Name: Robert A. Hamwee Title: Managing Director GSCP RECOVERY, INC., as a Lender By: /s/ Robert A. Hamwee ------------------------------------- Name: Robert A. Hamwee Title: Managing Director HALCYON FUND, L.P., as a Lender By: Halcyon/Alan B. Slifka Management, LLC, its managing general partner By: /s/ James W. Sykes ------------------------------------- Name: James W. Sykes Title: Managing Principal HCM/Z SPECIAL OPPORTUNITIES LLC, as a Lender By: /s/ Daniel Zwim ------------------------------------- Name: Daniel Zwim Title: Managing Member J.P. MORGAN SECURITIES INC., as agent for JPMORGAN CHASE BANK, as a Lender By: /s/ Eric Rosen ------------------------------------- Name: Eric Rosen Title: Authorized Signatory OAK HILL SECURITIES FUND, L.P. By: /s/ Scott D. Krase ------------------------------------- Name: Scott D. Krase Title: Authorized Signatory OZ MASTER FUND, LTD., as a Lender By: /s/ Daniel S. Och ------------------------------------- Name: Daniels S. Och Title: Senior Managing Member OZF CREDIT OPPORTUNITIES MASTER FUND, LTD., as a Lender By: /s/ Daniel S. Och ------------------------------------- Name: Daniel S. Och Title: Senior Managing Member OZF CREDIT OPPORTUNITIES MASTER FUND II, LTD., as a Lender By: /s/ Daniel S. Och ------------------------------------- Name: Daniel S. Och Title: Senior Managing Member RESERVOIR CAPITAL PARTNERS, L.P., as a Lender By: Reservoir Capital Group, L.L.C., general partner By: /s/ Craig Huff ------------------------------------- Name: Craig Huff Title: Managing Member RESERVOIR CAPITAL MASTER FUND, L.P., as a Lender By: Reservoir Capital Group, L.L.C., general partner By: /s/ Craig Huff ------------------------------------- Name: Craig Huff Title: Managing Member SPCP GROUP, as a Lender By: /s/ Unintelligible Signature ------------------------------------- Name: Jeffrey A. (?) Title: CFO URBAN CAPITAL LLC, as a Lender By: /s/ John Urban ------------------------------------- Name: John Urban Title: President EXHIBIT A SCHEDULE 1.1 A TO THE AMENDED AND RESTATED CREDIT AGREEMENT COMMITMENTS OF LENDERS Tranche A Tranche B Total Revolving Credit RevolvingCredit Revolving Credit Commitment Commitment Commitments ---------- ---------- ----------- Financial Institution Toronto Dominion (Texas), Inc. $20,000,000 $8,000,000 $28,000,000 Bank One, NA 3,333,334 -- 3,333,334 Bear, Stearns & Co. Inc. -- 26,000,000 26,000,000 The CIT Group/Business Credit, Inc. 20,000,000 -- 20,000,000 Continental Casualty Company 6,000,000 6,000,000 Goldman Sachs Credit Partners, L.P. -- 12,412,800 12,412,800 GSC Recovery II, L.P. 3,333,333 2,776,515 6,109,849 GSC Recovery IIA, L.P. -- 1,605,535 1,605,535 GSCP Recovery, Inc. 3,333,333 1,617,950 4,951,284 Halcyon Fund, L.P. -- 3,587,200 3,587,200 HCM/Z Special Opportunities LLC -- 10,400,000 10,400,000 JPMorgan Chase Bank -- 4,000,000 4,000,000 Oak Hill Securities Fund, L.P. -- 4,000,000 4,000,000 OZ Master Fund, Ltd. -- 4,372,800 4,372,800 OZF Credit Opportunities Master Fund, Ltd. -- 1,168,800 1,168,800 OZF Credit Opportunities Master Fund II, Ltd. -- 1,658,400 1,658,400 Reservoir Capital Master Fund, L.P. -- 800,000 800,000 Reservoir Capital Partners, L.P. -- 1,200,000 1,200,000 SPCP Group -- 6,400,000 6,400,000 Urban Capital LLC -- 4,000,000 4,000,000 TOTAL $50,000,000 $100,000,000 $150,000,000 =========== ============ ============