CONSENT CONSENT (this "CONSENT"), dated as of March 16, 2000, to the Amended and Restated Credit Agreement, dated as of April 3, 1998 (as amended, supplemented or otherwise modified from time to time, the "CREDIT AGREEMENT"), among SAFETY-KLEEN SERVICES, INC. (formerly known as LES, Inc.), a Delaware corporation (the "COMPANY"), SAFETY-KLEEN LTD. (successor to Safety-Kleen (Canada) Ltd., which was formerly known as Laidlaw Environmental Services (Canada) Ltd.), a Canadian corporation and a wholly owned subsidiary of the Company (together with the Company, the "BORROWERS"), the several banks and other financial institutions or entities from time to time parties thereto (the "LENDERS"), TORONTO DOMINION (TEXAS), INC., as general administrative agent (in such capacity, the "GENERAL ADMINISTRATIVE AGENT"), THE TORONTO-DOMINION BANK, as Canadian administrative agent, TD SECURITIES (USA) INC., as advisor to the Borrowers and arranger of the commitments described in the Credit Agreement, THE BANK OF NOVA SCOTIA, BANK OF AMERICA (formerly known as Nationsbank, N.A.), BANK ONE, N.A. (formerly known as The First National Bank of Chicago) and WACHOVIA BANK, N.A., as managing agents, THE BANK OF NOVA SCOTIA and THE FIRST NATIONAL BANK OF CHICAGO, as co-documentation agent, and BANK OF AMERICA (formerly known as Nationsbank, N.A.), as syndication agent. W I T N E S S E T H: - - - - - - - - - - WHEREAS, the Borrowers, the General Administrative Agent and the Lenders have entered into the Fourth Amendment, dated as of March 13, 2000, to the Credit Agreement (the "Fourth Amendment"); and WHEREAS, the Company has requested that the Lenders consent to certain actions in furtherance of the transactions set forth in the Fourth Amendment. 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. Consent. The Lenders hereby consent to the execution and delivery by ------- the General Administrative Agent of a subordination agreement, whereby the Mortgage on the real property of Safety-Kleen Systems, Inc. located in Elgin, Illinois, shall be subordinated to the liens and mortgage granted by Safety-Kleen Systems, Inc. on such property pursuant to Section 10.3(m). 3. Representation and Warranty. The Company represents and warrants to --------------------------- each Administrative Agent and Lender that, after giving effect to the transactions contemplated 093110-0154-01964-A03FN00L-CST 2 hereby, on the date hereof, the fair value of the Collateral is equal to or greater than the aggregate amount of the Obligations taking into account all prior Liens on the Collateral securing other Indebtedness. 4. Conditions to Effectiveness. This Consent shall become effective as --------------------------- of the date first above written when (i) each of the Required Lenders, the General Administrative Agent and the Borrowers shall have executed and delivered this Consent and (ii) each Guarantor shall have acknowledged and agreed to this Consent. 5. Continuing Effects. Except as expressly modified hereby, the Credit ------------------ Agreement and the Supplement shall continue to be and shall remain in full force and effect in accordance with their respective terms. 6. Expenses. The Company 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 Consent, including the reasonable fees and expenses of counsel. 7. Counterparts. This Consent may be executed on any number of separate ------------ counterparts and all of said counterparts taken together shall be deemed to constitute one and the same instrument. 8. GOVERNING LAW. THIS CONSENT SHALL BE GOVERNED BY, AND CONSTRUED AND ------------- INTERPRETED IN ACCORDANCE WITH, THE LAW OF THE STATE OF NEW YORK. 3 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. (formerly known as LES, Inc.) By: /s/ Henry H. Taylor -------------------------- Name: Henry H. Taylor Title: Secretary SAFETY-KLEEN LTD. (successor to Safety-Kleen Services (Canada) Ltd., which was formerly known as Laidlaw Environmental Services (Canada) Ltd.) By: /s/ Henry H. Taylor ---------------------------- Name: Henry H. Taylor Title: Secretary TORONTO DOMINION (TEXAS), INC., as General Administrative Agent and Lender By: /s/ Warren Finlay ---------------------------- Name: Warren Finlay Title: President THE TORONTO-DOMINION BANK, as Canadian Administrative Agent By: /s/ Wagner M. Shiplo ---------------------------- Name: Wagner M. Shiplo Title: Manager, Syndicated Loans Agency TD SECURITIES (USA) INC., as Arranger By: ---------------------------- Name: Title: 4 THE TORONTO-DOMINION BANK, as a Lender By: /s/ Warren Finlay ---------------------------- Name: Warren Finlay Title: President: THE BANK OF NOVA SCOTIA, as Managing Agent, Co-Documentation Agent and Lender By: /s/ William E. Zarrett ---------------------------- Name: William E. Zarrett Title: Managing Director THE FIRST NATIONAL BANK OF CHICAGO, n/k/a BankOne, NA, as Managing Agent, Co- Documentation Agent and Lender By: ---------------------------- Name: Title: BANK OF AMERICA (formerly known as Nationsbank, N.A.), as Syndication Agent, Managing Agent and Lender By: /s/ William Crawford ---------------------------- Name: William Crawford Title: Managing Director WACHOVIA BANK, N.A., as Managing Agent and Lender By: /s/ Donald E. Sellers, Jr. --------------------------- Name: Donald E. Sellers, Jr. Title: Vice President 5 THE CIT GROUP/BUSINESS CREDIT, INC. By: ---------------------------- Name: Title: GENERAL ELECTRIC CAPITAL CORPORATION By: /s/ Karl Kiefer ---------------------------- Name: Karl Kiefer Title: Duly Authorized Signatory COMERICA BANK By: ---------------------------- Name: Title: FLEET NATIONAL BANK By: /s/ Thomas D. Opie ---------------------------- Name: Thomas D. Opie Title: VP ROYAL BANK OF CANADA By: ---------------------------- Name: Title: CREDIT INDUSTRIEL ET COMMERCIAL By: /s/ Sean Mounier ---------------------------- Name: Sean Mounier Title: First Vice President By: /s/ Brian O'Leary ---------------------------- Name: Brian O'Leary Title: Vice President 6 HSBC BANK USA (formerly Marine Midland Bank) By: /s/ Kevin J. Ayers ------------------ Name: Kevin J. Ayers Title: V. P. THE LONG-TERM CREDIT BANK OF JAPAN, LTD. By: ---------------------------- Name: Title: THE MITSUBISHI TRUST AND BANKING CORPORATION By: ---------------------------- Name: Title: FLEET BUSINESS CREDIT CORPORATION (formerly Sanwa Business Credit Corporation) By: ---------------------------- Name: Title: SOCIETE GENERALE By: /s/ Robert Petersen ---------------------------- Name: Robert Petersen Title: Director SOUTHERN PACIFIC BANK By: /s/ Mun Young Kim ---------------------------- Name: Mun Young Kim Title: Vice President 7 CREDIT LYONNAIS ATLANTA AGENCY By: ---------------------------- Name: Title: COOPERATIEVE CENTRALE RAIFEISEN- BOERENLEENBANK B.A., "RABOBANK NEDERLAND" NEW YORK BRANCH By: /s/ Ian Reece ---------------------------- Name: Ian Reece Title: Senior Vice President By: /s/ Olietier B. Turnbull ---------------------------- Name: Olietier B. Turnbull Title: Vice President COMMERCIAL LOAN FUNDING TRUST I By: Lehman Commercial Paper Inc., not in its individual capacity but solely as administrative agent By: ----------------------- Name: Title: CREDIT SUISSE FIRST BOSTON By: ---------------------------- Name: Title: By: ---------------------------- Name: Title:e: 8 THE SAKURA BANK, LTD. By: ---------------------------- Name: Title: FIRSTAR BANK, N.A. By: /s/ Mark A. Whitson ------------------- Name: Mark A. Whitson Title: Vice President BANK OF HAWAII By: /s/ Patricia Rohifing ---------------------------- Name: Patricia Rohifing Title: Vice President CITIBANK, N.A. By: /s/ Bradley Dietz ---------------------------- Name: Bradley Dietz Title Managing Director THE SUMITOMO TRUST & BANKING CO., LTD., NEW YORK BRANCH By: ---------------------------- Name: Title: NATIONAL CITY BANK By: /s/ Robert C. Rowe ---------------------------- Name: Robert C. Rowe Title: Senior VP 9 BHF-BANK AKTIENGESELLSCHAFT By: ---------------------------- Name: Title: THE FUJI BANK, LIMITED By: ---------------------------- Name: Title: CAISSE DE DEPOT ET PLACEMENT DU QUEBEC By: /s/ Luis Lavoie ---------------------------- Name: Louis Lavoie Title: Vice President By: ---------------------------- Name: Title: KZH PONDVIEW LLC By: /s/ Peter Chin ---------------------------- Name: Peter Chin Title: Authorized Agent WEBSTER BANK By: /s/ Richard F. DiLorenzo ------------------------- Name: Richard F. DiLorenzo Title: Sr. V.P. 10 BANQUE WORMS CAPITAL CORPORATION By: ---------------------------- Name: Title: By: ---------------------------- Name: Title: IMPERIAL BANK By: /s/ Ray Vadalma ---------------------------- Name: Ray Vadalma Title: Senior Managing Director THE PRUDENTIAL INSURANCE COMPANY OF AMERICA By: ---------------------------- Name: Title: GPSF SECURITIES, INC. By: ---------------------------- Name: Title: KZH CNC LLC By: /s/ Peter Chin ---------------------------- Name: Peter Chin Title: Authorized Agent SUMMIT BANK By: /s/ Robert L. Turnipseed ------------------------ Name: Robert L. Turnipseed Title: Vice president 11 METROPOLITAN LIFE INSURANCE COMPANY By: /s/ Claudia Cromie ---------------------------- Name: Claudie Cromie Title: Director FIRSTRUST BANK By: ---------------------------- Name: Title: BANCO ESPIRITO SANTO By: ---------------------------- Name: Title: By: ---------------------------- Name: Title: THE CITY NATIONAL BANK By: ---------------------------- Name: Title: VAN KAMPEN PRIME RATE INCOME TRUST By: /s/ Darvin D. Pierce ---------------------------- Name: Darvin D. Pierce Title: Vice President 12 OAK HILL SECURITIES FUND, L.P. By: OAK HILL SECURITIES GENPAR, L.P., its General Partner By: OAK HILL SECURITIES MGP, INC., its General Partner By: /s/ William H. Bomsack, Jr. ---------------------------- Name: William H. Bomsack Title: V.P. SENIOR DEBT PORTFOLIO By: BOSTON MANAGEMENT AND RESEARCH, as Investment Advisor By: /S/ Payson F. Swaffield ------------------------ Name: Payson F. Swaffield Title: Vice President VAN KAMPEN CLO I, LIMITED BY: VAN KAMPEN MANAGEMENT INC., as Collateral Manager By: /s/ Darvin D. Pierce ------------------------ Name: Darvin D. Pierce Title: Vice President OCTAGON LOAN TRUST By: OCTAGON CREDIT INVESTORS, as Manager By: ---------------------------- Name: Title: 13 FRANKLIN FLOATING RATE TRUST By: ---------------------------- Name: Title: AG CAPITAL FUNDING PARTNERS, L.P. By: ANGELO, GORDON & CO., L.P., as Investment Advisor By: ---------------------------- Name: Title: FIRST DOMINION FUNDING I By: /s/ Andrew H. Marshak ---------------------------- Name: Andrew H. Marshak Title: Authorized Signatory JACKSON NATIONAL LIFE INSURANCE COMPANY By: PPM AMERICA, INC., as attorney in fact on behalf of Jackson National Life Insurance Company By: /s/ John (illegible) ------------------------ Name: John (illegible) Title: Managing Director ELC (CAYMAN) LTD. By: ---------------------------- Name: Title: 14 AMERICAN GENERAL ANNUITY INSURANCE COMPANY, formerly WESTERN NATIONAL LIFE INSURANCE COMPANY By: ---------------------------- Name: Title: KZH CRESCENT LLC By: /s/ Peter Chin ---------------------------- Name: Peter Chin Title: Authorized Agent KZH CRESCENT-2 LLC By: /s/ Peter Chin ---------------------------- Name: Peter Chin Title: Authorized Agent CRESCENT/MACH I PARTNERS, L.P. By: TCW ASSET MANAGEMENT COMPANY, as its Investment Manager By: /s/ Mark L. Gold ------------------------ Name: Mark L. Gold Title: Managing Director PAM CAPITAL FUNDING LP By: HIGHLAND CAPITAL MANAGEMENT, L.P., as Collateral Manager By: ---------------------------- Name: Title: 15 KZH CYPRESSTREE-1 LLC By: /s/ Peter Chin ---------------------------- Name: Peter Chin Title: Authorized Agent PAMCO CAYMAN LTD. By: HIGHLAND CAPITAL MANAGEMENT, L.P., as Collateral Manager By: ------------------------ Name: Title: ARCHIMEDES FUNDING, LLC BY: ING CAPITAL ADVISORS, INC. as Collateral Manager By: /s/ Kurt Wegleitner ------------------------ Name: Kurt Wegleitner Title: Vice President ING HIGH INCOME PRINCIPAL PRESERVATION FUND HOLDINGS, LDC BY: ING CAPITAL ADVISORS, INC., as Investment Advisor By: /s/ Kurt Wegleitner ------------------------ Name: Kurt Wegleitner Title: Vice President KZH SHOSHONE LLC By: /s/ Peter Chin ---------------------------- Name: Peter Chin Title: Authorized Agent 16 KZH ING-1 LLC By: /s/ Peter Chin ---------------------------- Name: Peter Chin Title: Authorized Agent KZH PAMCO LLC By: ---------------------------- Name: Title: PACIFICA PARTNERS I, L.P. By: IMPERIAL CREDIT ASSET MANAGEMENT, as its Investment Manager By: /s/ Dean K. Kawai ------------------------ Name: Dean K. Kawai Title: Vice President KZH RIVERSIDE LLC By: /s/ Peter Chin ---------------------------- Name: Peter Chin Title: Authorized Agent PILGRIM AMERICAN HIGH INCOME INVESTMENTS LTD. By: PILGRIM INVESTMENTS, INC., as its Investment Manager By: /s/ Charles E. LeMieux ----------------------- Name: Charles E. LeMieux, CFA Title: Assistant Vice President 17 KZH ING-2 LLC By: /s/ Peter Chin ---------------------------- Name: Peter Chin Title: Authorized Agent INDOSUEZ CAPITAL FUNDING IIA, LIMITED BY: INDOSUEZ CAPITAL as Portfolio Manager By: /s/ Melissa Marano ------------------------ Name: Melissa Marano Title: Vice President DELANO COMPANY By: PACIFIC INVESTMENT MANAGEMENT COMPANY, as its Investment Advisor By: PIMCO MANAGEMENT INC., a General Partner By: /s/ John S. Loftus ------------------------ Name: John S. Loftus Title: Managing Director KZH CRESCENT-3 LLC By: /s/ Peter Chin ---------------------------- Name: Peter Chin Title: Authorized Agent BALANCED HIGH-YIELD FUND I LTD. By: BHF-BANK AKTIENGESELLSCHAFT acting through its New York Branch, as its attorney-in-fact By: ---------------------------- Name: Title: 18 STATE STREET BANK AND TRUST COMPANY, as Trustee for GENERAL MOTORS EMPLOYEES GLOBAL GROUP PENSION TRUST By: ---------------------------- Name: Title: INDOSUEZ CAPITAL FUNDING III, LIMITED By: Indosuez Capital as Portfolio Advisor By: /s/ Melissa Marano ------------------------ Name: Melissa Marano Title: Vice President KZH SOLEIL LLC By: ---------------------------- Name: Title: ML CLO XII PILGRIM AMERICA (CAYMAN) LTD. By: PILGRIM INVESTMENTS, INC., as its Investment Manager By: /s/ Charles E. LeMieux ------------------------ Name: Charles E. LeMieux, CFA Title: Assistant Vice President 19 MLCLO XV PILGRIM AMERICA (CAYMAN) LTD. By: PILGRIM INVESTMENTS, INC., as its Investment Manager By: /s/ Charles E. LeMieux ------------------------ Name: Charles E. LeMieux, CFA Title: Assistant Vice President MOUNTAIN CAPITAL CLO I LTD. By: ---------------------------- Name: Title: CERES FINANCE LTD. By: /s/ Gregory Stoeckle ------------------- Name: Title: OASIS COLLATERALIZED HIGH INCOME PORTFOLIO I LTD By: INVESCO SENIOR SECURED MANAGEMENT, INC. By: /s/ Gregory Stoeckle ------------------------ Name: Title: BALANCED HIGH-YIELD FUND II LTD. By: BHF-BANK AKTIENGESELLSCHAFT acting through its New York Branch, as its attorney-in-fact By: ------------------------ Name: Title: 20 CAPTIVA III FINANCE, LTD. as advised by, PACIFIC INVESTMENT MANAGAGEMENT COMPANY By: ---------------------------- Name: Title: EATON VANCE SENIOR INCOME TRUST By: EATON VANCE MANAGEMENT, as Investment Advisor By: /s/ Payson F. Swaffield ------------------------ Name: Payson F. Swaffield Title: Vice President BLACK DIAMOND CLO 1998-1 LTD By: ---------------------------- Name: Title: KZH LANGDALE LLC By: /s/ Peter Chin ---------------------------- Name: Peter Chin Title: Authorized Agent ARCHIMEDES FUNDING II, LTD. BY: ING CAPITAL ADVISORS, INC., as Collateral Manager By: /s/ Kurt Wegleitner ------------------------ Name: Kurt Wegleitner Title: Vice President 21 ARCHIMEDES FUNDING III, LTD. BY: ING CAPITAL ADVISORS, LLC., as Collateral Manager By: /s/ Kurt Wegleitner ------------------------ Name: Kurt Wegleitner Title: Vice President SEQUILS-ING I (HBDGM), LTD. BY: ING CAPITAL ADVISORS, LLC., as Collateral Manager By: /s/ Kurt Wegleitner ------------------------ Name: Kurt Wegleitner Title: Vice President ALLIANCE CAPITAL FUNDING, L.L.C. By: ALLIANCE CAPITAL MANAGEMENT L.P., as Manager on behalf of ALLIANCE CAPITAL FUNDING, L.L.L. By: ALLIANCE CAPITAL MANAGEMENT CORPORATION, General Partner of Alliance Capital Management, L.P. By: ------------------------ Name: Title: BATTERSON PARK CBO I By: GENERAL RE-NEW ENGLAND ASSET MANAGEMENT, INC., as Collateral Manager By: ------------------------ Name: Title: 22 ATHENA CDO, LTD. By: PACIFIC INVESTMENT MANAGEMENT COMPANY as its investment advisor By: PIMCO MANAGEMENT INC., a general partner By: /s/ John S. Loftus ------------------- Name: John S. Loftus Title: Managing Director SEQUILS I, LTD. By: TWC Advisors, Inc. as its Collateral Manager By: /s/ Mark L. Gold ------------------------ Name: Mark L. Gold Title: Managing Director By: /s/ Jonathan R. Insull ------------------------ Name: Jonathan R. Insull Title: Vice President CAPTIVA II FINANCE LTD. By: /s/ (illegible) ---------------------------- Name: (illegible) Title: Director STRATA FUNDING LTD. By: /s/ Gregory Stoeckle ---------------------------- Name: Title: 23 ALLIANCE CAPITAL FUNDING, L.L.C. By: ALLIANCE CAPITAL MANAGEMENT L.P., as Manager on behalf of ALLIANCE CAPITAL FUNDING, L.L.L. By: ALLIANCE CAPITAL MANAGEMENT CORPORATION, General Partner of Alliance Capital Management, L.P. By: ------------------------ Name: Title: VAN KAMPEN SENIOR FLOATING RATE FUND By: /s/ Darvin D. Pierce ---------------------------- Name: Darvin D. Pierce Title: Vice President CONTINENTAL ASSURANCE COMPANY SEPARATE ACCOUNT (E) By: TCW ASSET MANAGEMENT COMPANY, as Attorney-in-Fact By: /s/ Mark L. Gold ------------------------ Name: Mark L. Gold Title: Managing Director By: /s/ Jonathan R. Insull ------------------------ Name: Jonathan R. Insull Title Vice President AMARA 2 - FINANCE LTD By: INVESCO SENIOR SECURED MANAGEMENT, INC., as Sub-Advisor By: /s/ Gregory Stoeckle ------------------------ Name: Title: 24 ROYALTON COMPANY By: PACIFIC INVESTMENT MANAGEMENT COMPANY, as its Investment Advisor By: PIMCO MANAGEMENT INC., a General Partner By: /s/ John S. Loftus ---------------------------- Name: John S. Loftus Title: Managing Director FLOATING RATE PORTFOLIO By: INVESCO SENIOR SECURED MANAGEMENT INC., as attorney in fact By: /s/ Gregory Stoeckle --------------------------------- Name: Title: AERIES FINANCIE-II LIMITED By: INVESCO SENIOR SECURED MANAGEMENT INC., as Sub-Managing Agent By: /s/ Gregory Stoeckle --------------------------------- Name: Title: AVALON CAPITAL LTD. By: INVESCO SENIOR SECURED MANAGEMENT INC., as Portfolio Advisor By: /s/ Gregory Stoeckle --------------------------------- Name: Title: 25 STRATA FUNDING LTD. By: INVESCO SENIOR SECURED MANAGEMENT INC., as Sub-Managing Agent By: /s/ Gregory Stoeckle --------------------------------- Name: Title: CERES FINANCE LTD. By: INVESCO SENIOR SECURED MANAGEMENT INC., as Sub-Managing Agent By: /s/ Gregory Stoeckle --------------------------------- Name: Title: TRITON CDO IV, LIMITED By: INVESCO SENIOR SECURED MANAGEMENT INC., as Investment Advisor By: /s/ Gregory Stoeckle ------------------------ Name: Title: KISLAK NATIONAL BANK By: ING CAPITAL ADVISORS LLC., as Investment Advisor By: ------------------------ Name: Title: 26 STB DELAWARE FUNDING TRUST I By: /s/ Donald C. Hargadon ---------------------------- Name: Donald C. Hargadon Title: Assistant Vice President STATE STREET BANK AND TRUST COMPANY, as Trustee for GENERAL MOTORS WELFARE BENEFITS TRUST By: ---------------------------- Name: Title: NORTH AMERICAN SENIOR FLOATING RATE FUND By: CYPRESSTREE INVESTMENT MANAGEMENT COMPANY, INC., as Portfolio Manager By: /s/ illegible ---------------------------- Name: Title CYPRESSTREE SENIOR FLOATING RATE FUND By: CYPRESSTREE INVESTMENT MANAGEMENT COMPANY, INC., its Portfolio Manager By: /s/ illegible ----------------------------- Name: Title: 27 CYPRESSTREE INVESTMENT PARTNERS I, LTD By: CYPRESSTREE INVESTMENT MANAGEMENT COMPANY, INC., as Portfolio Manager By: /s/ illegible ----------------------------- Name: Title: CYPRESSTREE INVESTMENT FUND, LLC By: CYPRESSTREE INVESTMENT MANAGEMENT COMPANY, INC., its Managing Member By: /s/ illegible ----------------------------- Name: Title: CYPRESSTREE INSTITUTIONAL FUND, LLC By: CYPRESSTREE INVESTMENT MANAGEMENT COMPANY, INC., its Managing Member By: /s/ illegible ----------------------------- Name: Title: CYPRESSTREE INVESTMENT MANAGEMENT COMPANY, INC. AS: Attorney-in-Fact and on Behalf of First Allmerica Financial Life Insurance Company, as Portfolio Manager By: /s/ illegible ---------------------------- Name: Title: 28 CYPRESSTREE INVESTMENT PARTNERS II, LTD. By: CYPRESSTREE INVESTMENT MANAGEMENT COMPANY, INC., as Portfolio Manager By: /s/ illegible -------------------------- Name: Title: KZH III LLC By: ---------------------------- Name Title: KZH HIGHLAND-2 LLC By: ---------------------------- Name: Title: KZH IV LLC By: ---------------------------- Name: Title: FIRST UNION NATIONAL BANK By: ---------------------------- Name: Title 29 CYPRESSTREE INVESTMENT FUND, LLC BY: CYPRESSTREE INVESTMENT MANAGEMENT COMPANY, INC., its Managing Member By: /s/ illegible ----------------------------- Name: Title: RABOBANK CANADA By: ---------------------------- Name: Title CREDIT LYONNAIS CANADA By: ---------------------------- Name: Title FIRST DOMINION FUNDING III By: /s/ Andrew H. Marshak ---------------------------- Name: Andrew H. Marshak Title: Authorized Signatory FIRST DOMINION FUNDING II By: /s/ Andrew H. Marshak ---------------------------- Name: Andrew H. Marshak Title: Authorized Signatory LEHMAN COMMERCIAL PAPER INC. By: /s/ Michael E. O'Brien ---------------------------- Name: Michael E. O'Brien Title: Authorized Signatory 30 VAN KAMPEN CLO II, LIMITED By: VAN KAMPEN MANAGEMENT INC., as Collateral Manager By: /s/ Darvin D. Pierce ----------------------------- Name: Darvin D. Pierce Title: Vice President KEMPER FLOATING RATE FUND By: /s/ Jonathan W. Trutter ---------------------------- Name: Title: INDOSUEZ CAPITAL FUNDING IV, L.P. By: INDOSUEZ CAPITAL, as Portfolio Advisor By: /s/ Melissa Marano ----------------------------- Name: Melissa Marano Title: Vice President BHF (USA) CAPITAL CORPORATION By: /s/ Richard Cameron ---------------------------- Name: Richard Cameron Title: Associate By: /s/ Dana L. McDougall ----------------------------- Name: Dana L. McDougall Title: Vice President 31 BALANCED HIGH-YELD FUND I LTD. By: BHF (USA) CAPITAL CORPORATION, as Attorney-In-Fact By: /s/ Richard Cameron ----------------------------- Name: Richard Cameron Title: Associate By: /s/ Dana L. McDougall ----------------------------- Name: Dana L. McDougall Title: Vice President BALANCED HIGH-YELD FUND II LTD. By: BHF (USA) CAPITAL CORPORATION, as Attorney-In-Fact By: /s/ Richard Cameron ----------------------------- Name: Richard Cameron Title: Associate By: /s/ Dana L. McDougall ----------------------------- Name: Dana L. McDougall Title: Vice President NOMURA BOND AND LOAN FUND By: NOMURA CORPORATE RESEARCH AND ASSET MANAGEMENT INC. AS INVESTMENT ADVISOR By: /s/ Richard W. Stewart ----------------------------- Name: Richard W. Stewart Title: Director 32 OCTAGON INVESTMENT PARTNERS II, LLC By: OCTAGON CREDIT INVESTORS, LLC, as sub-investment manager By: ----------------------------- Name: Title: OCTAGON INVESTMENT PARTNERS III, LLC By: OCTAGON CREDIT INVESTORS, LLC, as sub-investment manager By: ----------------------------- Name: Title: TEXTRON FINANCIAL CORP. By: /s/ R. Rodney Weaver ----------------------------- Name: R. Rodney Weaver Title: Vice President OLYMPIC FUNDING TRUST, Series 1999-1 By: /s/ Kelly C. Walker ---------------------------- Name: Kelly C. Walker Title: Authorized Agent PPM SPYGLASS FUNDING TRUST By: /s/ Kelly C. Walker ----------------------------- Name: Kelly C. Walker Title: Authorized Agent WINGED FOOT FUNDING TRUST By: /s/ Kelly C. Walker ----------------------------- Name: Kelly C. Walker Title: Authorized Agent 33 Zematt CBO, LTD. By: /s/ James Duplessie ---------------------------- Name: James Duplessie Title: Executive Director UBS AG, New York Branch Bayerische Hypo-und Vereinsbank AG, New York Branch By: /s/ Timothy Harrod ---------------------------- Name: Timothy Harrod Title: Director By: /s/ Steven Simons ---------------------------- Name: Steven Simons Title: Associate Director ACKNOWLEDGMENT AND CONSENT The undersigned does hereby acknowledge and consent to the foregoing Consent. The undersigned does hereby confirm and agree that, after giving effect to such Consent, the Guarantee and Collateral Agreement is and shall continue to be in full force and effect and is hereby confirmed and ratified in all respects. SAFETY-KLEEN CORP. (formerly known as Laidlaw Environmental Services, Inc.) By: /s/ Henry H. Taylor ----------------------------- Name: Henry H. Taylor Title: Secretary SAFETY-KLEEN SERVICES, INC. (formerly known as LES, Inc.) SAFETY-KLEEN (PECATONICA), INC. (formerly known as Laidlaw Environmental Services of Illinois, Inc.) GSX CHEMICAL SERVICES OF OHIO, INC. SAFETY-KLEEN (BDT), INC. (formerly known as Laidlaw Environmental Services (BDT), Inc.) SAFETY-KLEEN (FS), INC. (formerly known as Laidlaw Environmental Services (FS), Inc.) SAFETY-KLEEN (GS), INC. (formerly known as Laidlaw Environmental Services (GS), Inc.) SAFETY-KLEEN (CHATTANOOGA), INC. (formerly known as Laidlaw Environmental Services of Chattanooga, Inc.) SAFETY-KLEEN (WHITE CASTLE), INC. (formerly known as Laidlaw Environmental Services of White Castle, Inc.) SAFETY-KLEEN (CROWLEY), INC. (formerly known as Laidlaw Environmental Services (Recovery), Inc.) SAFETY-KLEEN (TS), INC. (formerly known as Laidlaw Environmental Services (TS), Inc.) SAFETY-KLEEN (WESTMORLAND), INC. (formerly known as Laidlaw Environmental Services (Imperial Valley), Inc.) 2 SAFETY-KLEEN (BUTTONWILLOW), INC. (formerly known as Laidlaw Environmental Services (Lokern), Inc.) SAFETY-KLEEN (CALIFORNIA), INC. (formerly known as Laidlaw Environmental of California, Inc.) SAFETY-KLEEN (PINEWOOD), INC.(formerly known as Laidlaw Environmental Services of South Carolina, Inc.) SAFETY-KLEEN (NE), INC.(formerly known as Laidlaw Environmental Services (North East), Inc.) SAFETY-KLEEN (LAPORTE), INC. (formerly known as Laidlaw Environmental Services (TES), Inc.) SAFETY-KLEEN CHEMICAL SERVICES, INC. (formerly known as Laidlaw Chemical Services, Inc.) SAFETY-KLEEN (ROEBUCK), INC.(formerly known as Laidlaw Environmental Services (TOC), Inc.) SAFETY-KLEEN (TG), INC. (formerly known as Laidlaw Environmental Services (TG), Inc.) SAFETY-KLEEN (ALTAIR), INC. (formerly known as Laidlaw Environmental Services (Altair), Inc.) SAFETY-KLEEN (WT), INC. (formerly known as Laidlaw Environmental Services (WT), Inc.) SAFETY-KLEEN (BARTOW), INC. (formerly known as Laidlaw Environmental Services of Bartow, Inc.) SAFETY-KLEEN (COLFAX), INC. (formerly known as Laidlaw Environmental Services (Thermal Treatment), Inc.) LEMC, INC. SAFETY-KLEEN OSCO HOLDINGS, INC. (formerly known as Laidlaw OSCO Holdings, Inc.) SAFETY-KLEEN (NASHVILLE), INC. (formerly known as Laidlaw Environmental Services of Nashville, Inc.) SAFETY-KLEEN (CLIVE), INC. (formerly known as Laidlaw Environmental Services (Clive), Inc.) 3 SAFETY-KLEEN (LONE AND GRASSY MOUNTAIN), INC. (formerly known as Laidlaw Environmental Services (Lone and Grassy Mountain), Inc.) SAFETY-KLEEN (TULSA), INC. (formerly known as Laidlaw Environmental Services (Tulsa), Inc.) SAFETY-KLEEN (SAN ANTONIO), INC. (formerly known as Laidlaw Environmental Services (San Antonio), Inc.) SAFETY-KLEEN (WICHITA), INC. (formerly known as Laidlaw Environmental Services (Wichita), Inc.) SAFETY-KLEEN (DELAWARE), INC. (formerly known as Laidlaw Environmental Services of Delaware, Inc.) USPCI, INC. OF GEORGIA SAFETY-KLEEN (SAN JOSE), INC. (formerly known as Laidlaw Environmental Services (San Jose), Inc.) SAFETY-KLEEN (SAWYER), INC. (formerly known as Laidlaw Environmental Services (Sawyer), Inc.) CHEMCLEAR, INC. OF LOS ANGELES SAFETY-KLEEN (ROSEMOUNT), INC. (formerly known as Laidlaw Environmental Services (Rosemount), Inc.) SAFETY-KLEEN HOLDING'S, INC. (formerly known as LES Holding's, Inc.) SAFETY-KLEEN (PPM), INC. (formerly known as Laidlaw Environmental Services (Tucker), Inc.) NINTH STREET PROPERTIES, INC. SAFETY-KLEEN (MT. PLEASANT), INC. (formerly known as Laidlaw Environmental Services (Mt. Pleasant), Inc.) SAFETY-KLEEN (DEER TRAIL), INC. (formerly known as Laidlaw Environmental Services (Deer Trail), Inc.) SAFETY-KLEEN (MINNEAPOLIS), INC. (formerly known as Laidlaw Environmental Services (Minneapolis), Inc.) SAFETY-KLEEN (LOS ANGELES), INC. (formerly known as Laidlaw Environmental Services (Los Angeles), Inc.) 4 SAFETY-KLEEN (BATON ROUGE), INC. (formerly known as Laidlaw Environmental Services (Baton Rouge), Inc.) SAFETY-KLEEN (PLAQUEMINE), INC. (formerly known as Laidlaw Environmental Services (Plaquemine), Inc.) SAFETY-KLEEN (BRIDGEPORT), INC. (formerly known as Laidlaw Environmental Services (Bridgeport), Inc.) SAFETY-KLEEN (DEER PARK), INC. (formerly known as Laidlaw Environmental Services (Deer Park), Inc.) SAFETY-KLEEN (TIPTON), INC. (formerly known as Laidlaw Environmental Services (Tipton), Inc.) SAFETY-KLEEN (SUSSEX), INC. (formerly known as Laidlaw Environmental Services (Sussex), Inc.) SAFETY-KLEEN (GLOUCESTER), INC. (formerly known as Laidlaw Environmental Services (Gloucester), Inc.) SAFETY-KLEEN (CUSTOM TRANSPORT), INC. (formerly known as Laidlaw Environmental Services (Custom Transport), Inc.) SAFETY-KLEEN (ARAGONITE), INC. (formerly known as Laidlaw Environmental Services (Aragonite), Inc.) SAFETY-KLEEN (PUERTO RICO), INC. (formerly known as Laidlaw Environmental Services (Puerto Rico), Inc.) SAFETY-KLEEN SYSTEMS, INC. (formerly known as Safety-Kleen Corp.) DIRT MAGNET, INC. THE MIDWAY GAS & OIL CO. ELGINT CORP. SAFETY-KLEEN ENVIROSYSTEMS COMPANY SAFETY-KLEEN ENVIROSYSTEMS COMPANY OF PUERTO RICO, INC. PETROCON, INC. PHILLIPS ACQUISITION CORP. SAFETY-KLEEN (CONSULTING), Inc. (formerly known as Virogroup, Inc., which was formerly known as Safety-Kleen Aviation, Inc.) SK REAL ESTATE, INC. SAFETY-KLEEN INTERNATIONAL, INC. 5 SAFETY-KLEEN OIL RECOVERY CO. SAFETY-KLEEN OIL SERVICES, INC. THE SOLVENTS RECOVERY SERVICE OF NEW JERSEY, INC. By: /s/ Henry H. Taylor ------------------------------ Name: Henry H. Taylor Title: Secretary 3E COMPANY ENVIRONMENTAL, ECOLOGICAL AND ENGINEERING By: /s/ Henry H. Taylor ------------------------------ Name: Henry H. Taylor Title: Assistant Secretary SK INSURANCE COMPANY By: /s/ A. John Guignion ------------------------------ Name: A. John Guignion Title: Vice President & Director SK EUROPE, INC. By: /s/ Henry H. Taylor ------------------------------ Name: Henry H. Taylor Title: Secretary SAFETY-KLEEN (ENCOTEC), INC. (formerly known as Laidlaw Environmental, Inc.) By: /s/ William D. Ridings ------------------------------ Name: William D. Ridings Title: Vice President of Finance and Treasurer