Document:

Exhibit 10.7

                                                                                                                 Exhibit
    10.7
     

    COLLATERAL
      AGENT AGREEMENT

    

    COLLATERAL
      AGENT AGREEMENT (this "Agreement")
      dated
      as of May 23, 2005, among Barbara R. Mittman (the "Collateral
      Agent"),
      and
      the parties identified on Schedule A hereto (each, individually, a "Lender"
      and
      collectively, the "Lenders"),
      who
      hold or will acquire convertible promissory notes issued and to be issued by
      Quest Oil Corporation (“Debtor”), a Nevada corporation, at about or prior to the
      date of this Agreement as described in the Security Agreements referred to
      in
      Section 1(a) below (collectively herein the “Notes").

    

    WHEREAS,
      the Lenders have made, are making and will be making loans to Debtor to be
      secured by certain collateral; and

    

    WHEREAS,
      it is desirable to provide for the orderly administration of such collateral
      by
      requiring each Lender to appoint the Collateral Agent, and the Collateral Agent
      has agreed to accept such appointment and to receive, hold and deliver such
      collateral, all upon the terms and subject to the conditions hereinafter set
      forth; and

    

    WHEREAS,
      it is desirable to allocate the enforcement of certain rights of the Lenders
      under the Notes for the orderly administration thereof.

    

    NOW,
      THEREFORE, in consideration of the premises set forth herein and for other
      good
      and valuable consideration, the parties hereto agree as follows:

    

    1. Collateral.

    

    (a) Contemporaneously
      with the execution and delivery of this Agreement by the Collateral Agent and
      the Lenders, (i) the Collateral Agent has or will have entered into a Security
      Agreement between the Collateral Agent and Debtor and between the Collateral
      Agent and the subsidiaries of the Debtor identified on Schedule B hereto (each
      a
“Subsidiary”)
      (each
      a "Security
      Agreement"),
      regarding the grant of a security interest in assets owned by Debtor and
      Subsidiary (such assets are referred to herein and in the Security Agreement
      as
      the "Collateral")
      to the
      Collateral Agent, for the benefit of the Lenders, (ii) Subsidiary will be
      delivering a Guaranty Agreement (the “Guaranty”)
      to the
      Collateral Agent with Subsidiary guaranteeing the obligations of Debtor under
      the Notes, Subscription Agreement, such Guaranty, this Agreement and all other
      agreements described in the foregoing agreements (collectively, “Borrower
      Documents”),
      and
      (iii) Debtor is issuing the Notes and in the future may issue additional Notes
      to the Lenders. 

    

    (b) For
      purposes solely of perfection of the security interests granted to the
      Collateral Agent, as agent on behalf of the Lenders, and on its own behalf
      under
      the Borrower Documents, the Collateral Agent hereby acknowledges that any
      Collateral held by the Collateral Agent is held for the benefit of the Lenders
      in accordance with this Agreement and the Borrower Documents. No reference
      to
      the Borrower Documents or any other instrument or document shall be deemed
      to
      incorporate any term or provision thereof into this Agreement unless expressly
      so provided.

    

    (c) The
      Collateral Agent is to distribute in accordance with the Borrower Documents
      any
      proceeds received from the Collateral which are distributable to the Lenders
      in
      proportion to their respective interests in the Obligations as defined in the
      Borrower Documents.

    

    2. Appointment
      of the Collateral Agent.

    

    The
      Lenders hereby appoint the Collateral Agent (and the Collateral Agent hereby
      accepts such appointment) to take any action including, without limitation,
      the
      registration of any Collateral in the name of the Collateral Agent or its
      nominees prior to or during the continuance of an Event of Default (as defined
      in the Borrower Documents), the exercise of voting rights upon the occurrence
      and during the continuance of an Event of Default, the application of any cash
      collateral received by the Collateral Agent to the payment of the Obligations,
      the making of any demand under the Borrower Documents, the exercise of any
      remedies given to the Collateral Agent pursuant to the Borrower Documents and
      the exercise of any authority pursuant to the appointment of the Collateral
      Agent as an attorney-in-fact pursuant to the Security Agreement that the
      Collateral Agent deems necessary or proper for the administration of the
      Collateral pursuant to the Borrower Documents. Upon disposition of the
      Collateral in accordance with the Borrower Documents, the Collateral Agent
      shall
      promptly distribute any cash or Collateral in accordance with Section 10.4
      of
      the Security Agreement. Lenders must notify Collateral Agent in writing of
      the
      issuance of Notes to Lenders by Debtor. The Collateral Agent will not be
      required to act hereunder in connection with Notes the issuance of which was
      not
      disclosed in writing to the Collateral Agent nor will the Collateral Agent
      be
      required to act on behalf of any assignee of Notes without the written consent
      of Collateral Agent.

    

    3. Action
      by the Majority in Interest.

    

    (a) Certain
      Actions.
      Each of
      the Lenders covenants and agrees that only a Majority in Interest shall have
      the
      right, but not the obligation, to undertake the following actions (it being
      expressly understood that less than a Majority in Interest hereby expressly
      waive the following rights that they may otherwise have under the Borrower
      Documents):

    

    (i) Acceleration.
      If an
      Event of Default occurs, after the applicable cure period, if any, a Majority
      in
      Interest may, on behalf of all the Lenders, instruct the Collateral Agent to
      provide to Debtor and/or Subsidiary notice to cure such default and/or declare
      the unpaid principal amount of the Notes to be due and payable, together with
      any and all accrued interest thereon and all costs payable pursuant to such
      Notes;

     

    (ii) Enforcement.
      Upon
      the occurrence of any Event of Default after the applicable cure period, if
      any,
      a Majority in Interest may instruct the Collateral Agent to proceed to protect,
      exercise and enforce, on behalf of all the Lenders, their rights and remedies
      under the Borrower Documents against Debtor and Subsidiary, and such other
      rights and remedies as are provided by law or equity;

    (iii) Waiver
      of Past Defaults.
      A
      Majority in Interest may instruct the Collateral Agent to waive any Event of
      Default by written notice to Debtor and Subsidiary, and the other Lenders;
      and

    

    (iv) Amendment.
      A
      Majority in Interest may instruct the Collateral Agent to waive, amend,
      supplement or modify any term, condition or other provision in the Notes or
      Borrower Documents in accordance with the terms of the Notes or Borrower
      Documents so long as such waiver, amendment, supplement or modification is
      made
      with respect to all of the Notes and with the same force and effect with respect
      to each of the Lenders.

    (b) Permitted
      Subordination.
      A
      Majority in Interest may instruct the Collateral Agent to agree to subordinate
      any Collateral to any claim and may enter into any agreement with Debtor and
      Subsidiary to evidence such subordination; provided,
      however,
      that
      subsequent to any such subordination, each Note shall remain pari passu
      with the
      other Notes held by the Lenders.

    

    (c) Further
      Actions.
      A
      Majority in Interest may instruct the Collateral Agent to take any action that
      it may take under this Agreement by instructing the Collateral Agent in writing
      to take such action on behalf of all the Lenders.

    

    (d) Majority
      in Interest.
      For so
      long as any obligations remain outstanding on the Notes, Majority in Interest
      shall mean Lenders who hold not less than sixty-five percent (65%) of the
      outstanding principal amount of the Notes.

    

    4. Power
      of Attorney.

    

    (a) To
      effectuate the terms and provisions hereof, the Lenders hereby appoint the
      Collateral Agent as their attorney-in-fact (and the Collateral Agent hereby
      accepts such appointment) for the purpose of carrying out the provisions of
      this
      Agreement including, without limitation, taking any action on behalf of, or
      at
      the instruction of, the Majority in Interest at the written direction of the
      Majority in Interest and executing any consent authorized pursuant to this
      Agreement and taking any action and executing any instrument that the Collateral
      Agent may deem necessary or advisable (and lawful) to accomplish the purposes
      hereof.

    

    (b) All
      acts
      done under the foregoing authorization are hereby ratified and approved and
      neither the Collateral Agent nor any designee nor agent thereof shall be liable
      for any acts of commission or omission, for any error of judgment, for any
      mistake of fact or law except for acts of gross negligence or willful
      misconduct.

    

    (c) This
      power of attorney, being coupled with an interest, is irrevocable while this
      Agreement remains in effect.

    

    5. Expenses
      of the Collateral Agent.
      The
      Lenders shall pay any and all costs and expenses incurred by the Collateral
      Agent, all waivers, releases, discharges, satisfactions, modifications and
      amendments of this Agreement, the administration and holding of the Collateral,
      insurance expenses, and the enforcement, protection and adjudication of the
      parties' rights hereunder by the Collateral Agent, including, without
      limitation, the reasonable disbursements, expenses and fees of the attorneys
      the
      Collateral Agent may retain, if any, each of the foregoing in proportion to
      their holdings of the Notes.

    

    6. Reliance
      on Documents and Experts.
      The
      Collateral Agent shall be entitled to rely upon any notice, consent,
      certificate, affidavit, statement, paper, document, writing or communication
      (which may be by telegram, cable, telex, telecopier, or telephone) reasonably
      believed by it to be genuine and to have been signed, sent or made by the proper
      person or persons, and upon opinions and advice of its own legal counsel,
      independent public accountants and other experts selected by the Collateral
      Agent.

    

    7. Duties
      of the Collateral Agent; Standard of Care.

    

    (a) The
      Collateral Agent's only duties are those expressly set forth in this Agreement,
      and the Collateral Agent hereby is authorized to perform those duties in
      accordance with commercially reasonable practices. The Collateral Agent may
      exercise or otherwise enforce any of its rights, powers, privileges, remedies
      and interests under this Agreement and applicable law or perform any of its
      duties under this Agreement by or through its officers, employees, attorneys,
      or
      agents.

    

    (b) The
      Collateral Agent shall act in good faith and with that degree of care that
      an
      ordinarily prudent person in a like position would use under similar
      circumstances.

    

    (c) Any
      funds
      held by the Collateral Agent hereunder need not be segregated from other funds
      except to the extent required by law. The Collateral Agent shall be under no
      liability for interest on any funds received by it hereunder.

    

    8. Resignation.
      The
      Collateral Agent may resign and be discharged of its duties hereunder at any
      time by giving written notice of such resignation to the other parties hereto,
      stating the date such resignation is to take effect. Within five (5) days of
      the
      giving of such notice, a successor collateral agent shall be appointed by the
      Majority in Interest; provided,
      however,
      that if
      the Lenders are unable so to agree upon a successor within such time period,
      and
      notify the Collateral Agent during such period of the identity of the successor
      collateral agent, the successor collateral agent may be a person designated
      by
      the Collateral Agent, and any and all fees of such successor collateral agent
      shall be the joint and several obligation of the Lenders. The Collateral Agent
      shall continue to serve until the effective date of the resignation or until
      its
      successor accepts the appointment and receives the Collateral held by the
      Collateral Agent but shall not be obligated to take any action hereunder. The
      Collateral Agent may deposit any Collateral with the Supreme Court of the State
      of New York for New York County or any such other court in New York State that
      accepts such Collateral.

    

    9. Exculpation.
      The
      Collateral Agent and its officers, employees, attorneys and agents, shall not
      incur any liability whatsoever for the holding or delivery of documents or
      the
      taking of any other action in accordance with the terms and provisions of this
      Agreement, for any mistake or error in judgment, for compliance with any
      applicable law or any attachment, order or other directive of any court or
      other
      authority (irrespective of any conflicting term or provision of this Agreement),
      or for any act or omission of any other person engaged by the Collateral Agent
      in connection with this Agreement, unless occasioned by the exculpated person's
      own gross negligence or willful misconduct; and each party hereto hereby waives
      any and all claims and actions whatsoever against the Collateral Agent and
      its
      officers, employees, attorneys and agents, arising out of or related directly
      or
      indirectly to any or all of the foregoing acts, omissions and circumstances.
      

    

    10. Indemnification.
      The
      Lenders hereby agree to indemnify, reimburse and hold harmless the Collateral
      Agent and its directors, officers, employees, attorneys and agents, jointly
      and
      severally, from and against any and all claims, liabilities, losses and expenses
      that may be imposed upon, incurred by, or asserted against any of them, arising
      out of or related directly or indirectly to this Agreement or the Collateral,
      except such as are occasioned by the indemnified person's own gross negligence
      or willful misconduct.

    

    11. Miscellaneous.

    

    (a) Rights
      and Remedies Not Waived.
      No act,
      omission or delay by the Collateral Agent shall constitute a waiver of the
      Collateral Agent's rights and remedies hereunder or otherwise. No single or
      partial waiver by the Collateral Agent of any default hereunder or right or
      remedy that it may have shall operate as a waiver of any other default, right
      or
      remedy or of the same default, right or remedy on a future
      occasion.

    

    (b) Governing
      Law.
      This
      Agreement shall be governed by, and construed in accordance with, the laws
      of
      the State of New York without
      regard to conflicts
      of laws that
      would result
      in
      the application of the
      substantive laws of another
      jurisdiction.

    

    (c) Waiver
      of Jury Trial and Setoff; Consent to Jurisdiction; Etc.

    

    (i) In
      any
      litigation in any court with respect to, in connection with, or arising out
      of
      this Agreement or any instrument or document delivered pursuant to this
      Agreement, or the validity, protection, interpretation, collection or
      enforcement hereof or thereof, or any other claim or dispute howsoever arising,
      between the Collateral Agent and the Lenders or any Lender, then each Lender,
      to
      the fullest extent it may legally do so, (A) waives the right to interpose
      any
      setoff, recoupment, counterclaim or cross-claim in connection with any such
      litigation, irrespective of the nature of such setoff, recoupment, counterclaim
      or cross-claim, unless such setoff, recoupment, counterclaim or cross-claim
      could not, by reason of any applicable federal or state procedural laws, be
      interposed, pleaded or alleged in any other action; and (B) WAIVES
      TRIAL BY JURY IN CONNECTION WITH ANY SUCH LITIGATION AND ANY RIGHT IT MAY HAVE
      TO CLAIM OR RECOVER IN ANY SUCH LITIGATION ANY SPECIAL, EXEMPLARY, PUNITIVE
      OR
      CONSEQUENTIAL DAMAGES OR ANY DAMAGES OTHER THAN, OR IN ADDITION TO, ACTUAL
      DAMAGES. EACH LENDER AGREES THAT THIS SECTION 11(c) IS A SPECIFIC AND MATERIAL
      ASPECT OF THIS AGREEMENT AND ACKNOWLEDGE THAT THE COLLATERAL AGENT WOULD NOT
      ENTER THIS AGREEMENT IF THIS SECTION 11(c) WERE NOT PART OF THIS
      AGREEMENT.

    

    (ii) Each
      Lender irrevocably consents to the exclusive jurisdiction of any State or
      Federal Court located within the County of New York, State of New York, in
      connection with any action or proceeding arising out of or relating to this
      Agreement or any document or instrument delivered pursuant to this Agreement
      or
      otherwise. In any such litigation, each Lender waives, to the fullest extent
      it
      may effectively do so, personal service of any summons, complaint or other
      process and agree that the service thereof may be made by certified or
      registered mail directed to such Lender at its address for notice determined
      in
      accordance with Section 11(e) hereof. Each Lender hereby waives, to the fullest
      extent it may effectively do so, the defenses of forum non conveniens and
      improper venue.

    

    (d) Admissibility
      of this Agreement.
      Each of
      the Lenders agrees that any copy of this Agreement signed by it and transmitted
      by telecopier for delivery to the Collateral Agent shall be admissible in
      evidence as the original itself in any judicial or administrative proceeding,
      whether or not the original is in existence.

    

    (e) Address
      for Notices.
      Any
      notice or other communication under the provisions of this Agreement shall
      be
      given in writing and delivered in person, by reputable overnight courier or
      delivery service, by facsimile machine (receipt confirmed) with a copy sent
      by
      first class mail on the date of transmissions, or by registered or certified
      mail, return receipt requested, directed to such party’s addresses set forth
      below (or to any new address of which any party hereto shall have informed
      the
      others by the giving of notice in the manner provided herein):

    

    In
      the
      case of the Collateral Agent, to her at:

    

    Barbara
      R. Mittman

    551
      Fifth
      Avenue, Suite 1601

    New
      York,
      New York 10176

    Fax:
      (212) 697-3575

    

    In
      the
      case of the Lenders, to:

    

    To
      the
      address and telecopier number set forth on 

    Schedule
      A hereto.

    

    In
      the
      case of Debtor and Subsidiaries, to:

    

    Quest
      Oil
      Corporation

    2000
      East
      Lamar Boulevard, Suite 600

    Arlington,
      Texas 76006

    Fax:
      (800) 868-0402

    

    With
      a
      copy by telecopier only to:

    

    The
      Baum
      Law Firm

    4275
      Executive Square, Suite 210

    La
      Jolla,
      CA 92037

    Attn:
      Mark L. Baum, Esq.

    Fax:
      (760) 230-2305

    

    (f) Amendments
      and Modification; Additional Lender.
      No
      provision hereof shall be modified, altered, waived or limited except by written
      instrument expressly referring to this Agreement and to such provision, and
      executed by the parties hereto. Any transferee of a Note who acquires a Note
      after the date hereof will become a party hereto by signing the signature page
      and sending an executed copy of this Agreement to the Collateral Agent and
      receiving a signed acknowledgement from the Collateral Agent.

    

    (g) Fee.
      Upon
      the occurrence of an Event of Default, the Lenders collectively shall pay the
      Collateral Agent the sum of $10,000 to apply against an hourly fee of $350
      to be
      paid to the Collateral Agent by the Lenders for services rendered pursuant
      to
      this Agreement. All payments due to the Collateral Agent under this Agreement
      including reimbursements must be paid when billed. The Collateral Agent may
      refuse to act on behalf of or make a distribution to any Lender who is not
      current in payments to the Collateral Agent. Payments required pursuant to
      this
      Agreement shall be pari passu
      to the
      Lenders' interests in the Notes. The Collateral Agent is hereby authorized
      to
      deduct any sums due the Collateral Agent from Collateral in the Collateral
      Agent's possession.

    

    (h) 
      Counterparts/Execution.
      This
      Agreement may be executed in any number of counterparts and by the different
      signatories hereto on separate counterparts, each of which, when so executed,
      shall be deemed an original, but all such counterparts shall constitute but
      one
      and the same instrument. This Agreement may be executed by facsimile signature
      and delivered by facsimile transmission.

    

    (i) Successors
      and Assigns.
      Whenever in this Agreement reference is made to any party, such reference shall
      be deemed to include the successors, assigns, heirs and legal representatives
      of
      such party. No party hereto may transfer any rights under this Agreement, unless
      the transferee agrees to be bound by, and comply with all of the terms and
      provisions of this Agreement, as if an original signatory hereto on the date
      hereof.

    

    (j) Captions:
      Certain Definitions.
      The
      captions of the various sections and paragraphs of this Agreement have been
      inserted only for the purposes of convenience; such captions are not a part
      of
      this Agreement and shall not be deemed in any manner to modify, explain, enlarge
      or restrict any of the provisions of this Agreement. As used in this Agreement
      the term "person"
      shall
      mean and include an individual, a partnership, a joint venture, a corporation,
      a
      limited liability company, a trust, an unincorporated organization and a
      government or any department or agency thereof.

    

    (k) Severability.
      In the
      event that any term or provision of this Agreement shall be finally determined
      to be superseded, invalid, illegal or otherwise unenforceable pursuant to
      applicable law by an authority having jurisdiction and venue, that determination
      shall not impair or otherwise affect the validity, legality or enforceability
      (i) by or before that authority of the remaining terms and provisions of this
      Agreement, which shall be enforced as if the unenforceable term or provision
      were deleted, or (ii) by or before any other authority of any of the terms
      and
      provisions of this Agreement.

    

    (l) Entire
      Agreement.
      This
      Agreement contains the entire agreement of the parties and supersedes all other
      agreements and understandings, oral or written, with respect to the matters
      contained herein.

    

    (m) Schedules.
      The
      Collateral Agent is authorized to annex hereto any schedules referred to
      herein.

    

    

    
      
        
        

      

      
        
        

                                                                                                              
          
                                                                                                              Exhibit
          10.7

      

      
        
        

      

    

    

    

    IN
      WITNESS WHEREOF, the parties hereto have caused this Collateral Agent Agreement
      to be signed, by their respective duly authorized officers or directly, as
      of
      the date first written above.

    

    “LENDERS”

     

     

    

    ______________________________________  _______________________________________

    ALPHA
      CAPITAL AKTIENGESELLSCHAFT          PLATINUM
      PARTNERS VALUE

                                         ARBITRAGE
      FUND
      LP

    

    

    _______________________________________  _______________________________________

    NITE
      CAPITAL LP             THUNDERBIRD
      GLOBAL CORPORATION

    

    

    

    _______________________________________

    STRAIGHTLINE
      CAPITAL OPPORTUNITY

    FUND
      I

    

    _____________________________________

    BARBARA
      R. MITTMAN - Collateral Agent

    

    

    Acknowledged:

    

    QUEST
      OIL
      CORPORATION   

    

    

    

    By:__________________________________  

    Its:
      __________________________________

    

    

    QUEST
      OIL
      CORPORATION CIK

    

    

    

    

    By:
      _____________________________________

    Its:
      __________________________________

    

    

    This
      Collateral Agent Agreement may be signed by facsimile signature and delivered
      by
      confirmed facsimile transmission.

    

    
      
        
          1

          

        

        
        

      

      
        
        

        
          

        

      

      
        
          Exhibit
            10.7

        

        
           

        

      

    

    
      SCHEDULE
        A TO COLLATERAL AGENT AGREEMENT

    

    
      	
              LENDER

            	
              NOTES

            
	
              ALPHA
                CAPITAL AKTIENGESELLSCHAFT

              Pradafant
                7

              9490
                Furstentums

              Vaduz,
                Lichtenstein

              Fax:
                011-42-32323196

            	
              $262,500.00

            
	
              PLATINUM
                PARTNERS VALUE ARBITRAGE FUND LP

              Attn:
                Mark Nordlicht

              152
                West 57th
                Street

              New
                York, New York 10019

              Fax:
                (212) 581-0002

            	
              $262,500.00

            
	
              NITE
                CAPITAL LP

              100
                E. Cook Avenue, Suite 201

              Libertyville,
                IL 60048

              Attn:
                Keith Goodman

              Fax:
                (847) 968-2648

            	
              $157,500.00

            
	
              THUNDERBIRD
                GLOBAL CORPORATION

              P.O.
                Box 816-04174

              Ave.
                Balboa, Panama 5

              Republic
                of Panama

              Fax:
                011-507-264-7521

            	
              $52,500.00

            
	
              STRAIGHTLINE
                CAPITAL OPPORTUNITY FUND I

              5155
                Rosecrans Boulevard

              Suite
                1228

              Los
                Angeles, CA 90250

            	
              $52,500.00

            
	
              TOTAL

            	
              $787,500.00Fourth Amendment to the Credit Agreement

 EXHIBIT 10.21 
  
 FOURTH AMENDMENT TO THE CREDIT AGREEMENT 
  
 THIS FOURTH AMENDMENT, dated as of July 29, 05 (the “Amendment”), to the Credit Agreement, dated as of
August 13, 2003, as amended by the First Amendment thereto, dated as of November 17, 2003, as further amended by the Second Amendment thereto, dated as of June 8, 2004 and as further amended by the Third Amendment thereto, dated as of August 23,
2004 (the “Credit Agreement”), among CONCENTRA INC., a Delaware corporation (“Holdings”), CONCENTRA OPERATING CORPORATION, a Nevada corporation (the “Borrower”), the several banks and other
financial institutions from time to time parties thereto (the “Lenders”) and JPMORGAN CHASE BANK, N.A., a national banking association, as administrative agent for the Lenders thereunder (in such capacity, the
“Administrative Agent”), is entered into by and among Holdings, the Borrower, the Lenders and the Administrative Agent. 
  
 WITNESSETH: 
  
 WHEREAS, Holdings, the Borrower, the Lenders and the Administrative Agent are parties to the Credit Agreement; 
  
 WHEREAS, the Borrower has requested that the Lenders amend the Credit
Agreement, as more fully described herein; and 
  
 WHEREAS, the
Lenders are willing to agree to such amendment, but only upon the terms and subject to the conditions set forth herein; 
  
 NOW THEREFORE, in consideration of the premises and the mutual covenants hereinafter set forth, the parties hereto hereby agree as follows: 
  
 Defined Terms. Unless otherwise defined herein, capitalized terms which are
defined in the Credit Agreement are used herein as therein defined. 
  
 Amendment to Section 7.8A (Acquisitions). Section 7.8A of the Credit Agreement is hereby amended by deleting the clause “in an aggregate amount not to exceed $12,000,000 for the period from the Closing Date to December 31, 2003,
$32,500,000 in the fiscal year ended 2004, $35,000,000 in the fiscal year ended 2005, $37,500,000 in the fiscal year ended 2006, $40,000,000 in the fiscal year ended 2007, $42,500,000 in the fiscal year ended 2008 and $22,500,000 for the period from
January 1, 2009 through June 30, 2009” and inserting in lieu thereof the following: 
  
 in an aggregate amount not to exceed $12,000,000 for the period from the Closing Date to December 31, 2003, $32,500,000 in the fiscal year ended 2004, $55,000,000 in the fiscal year ended 2005, $57,500,000 in the
fiscal year ended 2006, $60,000,000 in the fiscal year ended 2007, $62,500,000 in the fiscal year ended 2008 and $42,500,000 for the period from January 1, 2009 through June 30, 2009 

 Conditions to Effectiveness of this Amendment. This Amendment shall become effective upon the date (the
“Effective Date”) when the following conditions are satisfied: 
  
 Amendment to Credit Agreement. The Administrative Agent shall have received counterparts of this Amendment, duly executed and delivered by Holdings and the Borrower, and executed and delivered or consented to
by the Required Lenders; 
  
 No Default.
No Default or Event of Default shall have occurred and be continuing on such date or after giving effect to the transactions contemplated herein; and 
  
 Representations and Warranties. Each of the representations and warranties made by the Loan Parties in or pursuant to the Loan
Documents shall be true and correct in all material respects on and as of the date hereof, before and after giving effect to the effectiveness of this Amendment, as if made on and as of the date hereof, except to the extent such representations and
warranties expressly relate to a specific earlier date, in which case such representations and warranties were true and correct as of such earlier date. 
  
 Continuing Effect of the Credit Agreement. This Amendment shall not constitute an amendment or waiver of any provision of the Credit Agreement not
expressly referred to herein and shall not be construed as an amendment, waiver or consent to any further or future action on the part of the Loan Parties that would require an amendment, waiver or consent of the Lenders or Administrative Agent.
Except as expressly amended hereby, the provisions of the Credit Agreement are and shall remain in full force and effect. 
  
 Counterparts. This Amendment may be executed by one or more of the parties hereto on any number of separate counterparts (including by facsimile), and all
of said counterparts taken together shall be deemed to constitute one and the same instrument. 
  
 Severability. Any provision of this Amendment which is prohibited or unenforceable in any jurisdiction shall, as to such jurisdiction, be ineffective to the extent of such prohibition or unenforceability without
invalidating the remaining provisions hereof, and any such prohibition or unenforceability in any jurisdiction shall not invalidate or render unenforceable such provision in any other jurisdiction. 
  
 Integration. This Amendment and the other Loan Documents represent the
agreement of the Loan Parties, the Administrative Agent and the Lenders with respect to the subject matter hereof, and there are no promises, undertakings, representations or warranties by the Administrative Agent or any Lender relative to the
subject matter hereof not expressly set forth or referred to herein or in the other Loan Documents. 
  
 GOVERNING LAW. THIS AMENDMENT AND THE RIGHTS AND OBLIGATIONS OF THE PARTIES UNDER THIS AMENDMENT SHALL BE GOVERNED BY, AND CONSTRUED AND INTERPRETED IN
ACCORDANCE WITH, THE LAW OF THE STATE OF NEW YORK. 
  

 2 

 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. 
  

					
	 CONCENTRA INC.

		
	 BY: 
	 	 /s/ Thomas E. Kiraly

	 	 	 Name:
	 	 Thomas E. Kiraly

	 	 	 Title:
	 	 Executive Vice President and CFO

	
	 CONCENTRA OPERATING CORPORATION

		
	 BY:
	 	 /s/ Thomas E. Kiraly

	 	 	 Name:
	 	 Thomas E. Kiraly

	 	 	 Title:
	 	 Executive Vice President and CFO

	
	JPMORGAN CHASE BANK, N.A., as
Administrative Agent and a Lender
		
	 By:
	 	 /s/ Stephanie Parker

	 	 	 Name:
	 	 Stephanie Parker

	 	 	 Title:
	 	 Vice President

  

 3 

					
	 Atrium CDO, as a Lender

		
	 By: 
	 	 /s/ David H. Lerner

	 	 	 Name:
	 	 David H. Lerner

	 	 	 Title:
	 	 Authorized Signatory

  

 4 

			
	 CSAM Funding II, as a Lender

		
	 By: 
	 	 /s/ David H. Lerner

	 	 	 Name: David H. Lerner

	 	 	 Title:   Authorized Signatory

  

 5 

			
	 CSAM Funding III, as a Lender

		
	 By: 
	 	 /s/ David H. Lerner

	 	 	 Name: David H. Lerner

	 	 	 Title:   Authorized Signatory

  

 6 

			
	 CSAM Funding IV, as a Lender

		
	 By: 
	 	 /s/ David H. Lerner

	 	 	 Name: David H. Lerner

	 	 	 Title:   Authorized Signatory

  

 7 

					
	 First Dominion Fund III, as a Lender

		
	 By: 
	 	 /s/ David H. Lerner

	 	 	 Name:
	 	 David H. Lerner

	 	 	 Title:
	 	 Authorized Signatory

  

 8 

					
	 CSAM SLF, as a Lender

		
	 By: 
	 	 /s/ David H. Lerner

	 	 	 Name:
	 	 David H. Lerner

	 	 	 Title:
	 	 Authorized Signatory

  

 9 

					
	 Citicorp North America, Inc., as a Lender

		
	 By: 
	 	 /s/ Hector Guenther

	 	 	 Name:
	 	 Hector Guenther

	 	 	 Title:
	 	 Vice President

  

 10 

					
	 Credit Suisse, Cayman Island Branch, as a Lender

		
	 By: 
	 	 /s/ David Dodd

	 	 	 Name:
	 	 David Dodd

	 	 	 Title:
	 	 Vice President

		
	 By:
	 	 /s/ Rianka Mohan

	 	 	 Name:
	 	 Rianka Mohan

	 	 	 Title:
	 	 Associate

  

 11 

					
	 Carlyle High Yield Partners II, Ltd., as a Lender

		
	 By: 
	 	 /s/ Linda Pace

	 	 	 Name:
	 	 Linda Pace

	 	 	 Title:
	 	 Managing Director

  

 12 

					
	 Carlyle High Yield Partners III, Ltd., as a Lender

		
	 By: 
	 	 /s/ Linda Pace

	 	 	 Name:
	 	 Linda Pace

	 	 	 Title:
	 	 Managing Director

  

 13 

					
	 Carlyle High Yield Partners IV, Ltd., as a Lender

		
	 By: 
	 	 /s/ Linda Pace

	 	 	 Name:
	 	 Linda Pace

	 	 	 Title:
	 	 Managing Director

  

 14 

					
	 Carlyle High Yield Partners VI, Ltd., as a Lender

		
	 By: 
	 	 /s/ Linda Pace

	 	 	 Name:
	 	 Linda Pace

	 	 	 Title:
	 	 Managing Director

  

 15 

					
	 Carlyle Loan Investment, Ltd., as a Lender

		
	 By: 
	 	 /s/ Linda Pace

	 	 	 Name:
	 	 Linda Pace

	 	 	 Title:
	 	 Managing Director

  

 16 

					
	 Carlyle Loan Opportunity Fund, as a Lender

		
	 By: 
	 	 /s/ Linda Pace

	 	 	 Name:
	 	 Linda Pace

	 	 	 Title:
	 	 Managing Director

  

 17 

					
	 CALYON NEW YORK BRANCH, as a Lender

		
	By: 	 	/s/ Charles Heidsieck
	 	 	 Name:
	 	 Charles Heidsieck

	 	 	 Title:
	 	 Managing Director

		
	By:	 	/s/ Thomas Randolph
	 	 	 Name:
	 	 Thomas Randolph

	 	 	 Title:
	 	 Managing Director

  

 18 

					
	 PPM SHADOW CREEK FUNDING LLC, as a
 Lender

		
	By: 	 	/s/ M. Cristina Higgins
	 	 	 Name:
	 	 M. Cristina Higgins

	 	 	 Title:
	 	 Assistant Vice President

  

 19 

					
	 PPM SPYGLASS FUNDING TRUST, as a Lender

		
	By: 	 	/s/ Ann E. Morris
	 	 	 Name:
	 	 Ann E. Morris

	 	 	 Title:
	 	 Authorized Agent

  

 20 

					
	 Tuscany CDO, Limited, as a Lender by PPM
 America, Inc., as Collateral Manager

		
	By: 	 	/s/ David C. Wagner
	 	 	 Name:
	 	 David C. Wagner

	 	 	 Title:
	 	 Managing Director

  

 21 

					
	 Fidelity Advisor Series II: Fidelity Advisor Floating
 Rate High Income Fund, as a Lender

		
	By: 	 	/s/ John Costello
	 	 	 Name:
	 	 John Costello

	 	 	 Title:
	 	 Assistant Treasurer

  

 22 

					
	 Ballyrock CLO II Limited, By: Ballyrock
 Investment Advisors LLC, as Collateral Manager,
 as a Lender

		
	By: 	 	/s/ Lisa Rymut
	 	 	 Name:
	 	 Lisa Rymut

	 	 	 Title:
	 	 Assistant Treasurer

  

 23 

					
	 Ballyrock CDO I Limited, By: Ballyrock
 Investment Advisors LLC, as Collateral Manager,
 as a Lender

		
	By: 	 	/s/ Lisa Rymut
	 	 	 Name:
	 	 Lisa Rymut

	 	 	 Title:
	 	 Assistant Treasurer

  

 24 

					
	 LCM I LIMITED PARTNERSHIP, by Lyon
 Capital Management LLC, as Collateral Manager,
 as a Lender

		
	By: 	 	/s/ Alexander B. Kenna
	 	 	 Name:
	 	 Alexander B. Kenna

	 	 	 Title:
	 	 Portfolio Manager

  

 25 

			
	 LCM II LIMITED PARTNERSHIP, by: Lyon
 Capital Management LLC, as Collateral Manager,
 as a Lender

		
	 By:
	 	 /s/ Alexander B. Kenna

	 	 	 Name: Alexander B. Kenna

	 	 	 Title:   Portfolio Manager

  

 26 

			
	 LCM III, Ltd., by Lyon Capital Management LLC,
 as Collateral Manager, as a Lender

		
	 By:
	 	 /s/ Alexander B. Kenna

	 	 	 Name: Alexander B. Kenna

	 	 	 Title:   Portfolio Manager

  

 27 

			
	 PPM MONARCH BAY FUNDING LLC, as a
 Lender

		
	 By:
	 	 /s/ M. Cristina Higgins

	 	 	 Name: M. Cristina Higgins

	 	 	 Title:   Assistant Vice President

  

 28 

			
	 STANWICH LOAN FUNDING LLC, as a Lender

		
	 By:
	 	 /s/ M. Cristina Higgins

	 	 	 Name: M. Cristina Higgins

	 	 	 Title:   Assistant Vice President

  

 29 

			
	 HARBOUR TOWN FUNDING LLC, as a Lender

		
	 By:
	 	 /s/ M. Cristina Higgins

	 	 	 Name: M. Cristina Higgins

	 	 	 Title:   Assistant Vice President

  

 30 

			
	 LONG LANE MASTER TRUST IV, as a Lender

		
	 By:
	 	 /s/ Ann E. Morris

	 	 	 Name: Ann E. Morris

	 	 	 Title:   Authorized Agent

  

 31 

			
	 ING Investment Management, Inc.
 7337 E. Doubletree Ranch Road
 Scottsdale, AZ 85258, as a Lender

		
	 By:
	 	 /s/ Michael Prince

	 	 	 Name: Michael Prince, CFA

	 	 	 Title:   Senior Vice President

  

			
	 ING SENIOR INCOME FUND,
 By: ING Investment Management Co., as its
 investment manager, as a Lender

		
	 By:
	 	 /s/ Michael Prince

	 	 	 Name: Michael Prince, CFA

	 	 	 Title:   Senior Vice President

  

			
	 ING PRIME ESTATE TRUST,
 By: ING Investment Management Co. as its
 Investment manager, as a Lender

		
	 By:
	 	 /s/ Michael Prince

	 	 	 Name: Michael Prince, CFA

	 	 	 Title:   Senior Vice President

  

			
	 ML CLO XV PILGRIM AMERICA
 (CAYMAN) LTD,
 By: ING Investments, LLC, as its Investment
 manager, as a
Lender

		
	 By:
	 	 /s/ Michael Prince

	 	 	 Name: Michael Prince, CFA

	 	 	 Title:   Senior Vice President

  

 32 

			
	 GENERAL ELECTRIC CAPITAL
 CORPORATION, as a Lender

		
	 By:
	 	 /s/ Steven Wagables

	 	 	 Name: Steven Wagables

	 	 	 Title:   Duly Authorized Signatory

  

 33 

			
	 Oppenheimer Senior Floating Rate Fund, as a
 Lender

		
	 By:
	 	 /s/ Susanna Evans

	 	 	 Name: Susanna Evans

	 	 	 Title:   Manager

  

 34 

			
	 HarbourView CLO IV Ltd., as a Lender

		
	 By:
	 	 /s/ Susanna Evans

	 	 	 Name: Susanna Evans

	 	 	 Title:   Manager

  

 35 

			
	 HarbourView CLO V Ltd., as a Lender

		
	By: 	 	 /s/ Susanna Evans

	 	 	 Name: Susanna Evans

	 	 	 Title:   Manager

  

 36 

			
	 BlackRock Global Floating Rate Income Trust
 BlackRock Limited Duration Income Trust
 BlackRock Senior Income Series
 Magnetite Asset Investors LLC
 Magnetite Asset Investors III LLC
 Magnetite IV CLO, Limited
 Magnetite V CLO, Limited
 Senior Loan Portfolio,
 as Lenders

		
	By: 	 	 /s/ Tom Colwell

	 	 	 Name: Tom Colwell

	 	 	 Title:   Authorized Signatory

  

 37 

			
	 GRAYSON & CO., as a Lender

		
	By: 	 	 /s/ John Redding

	 	 	 Name: John Redding

	 	 	 Title:   VP/Portfolio Manager

  

 38 

			
	 SENIOR DEBT PORTFOLIO, as a Lender

		
	By: 	 	 /s/ John Redding

	 	 	 Name: John Redding

	 	 	 Title:   VP/Portfolio Manager

  

 39 

			
	 TOLLI & CO., as a Lender

		
	By: 	 	 /s/ John Redding

	 	 	 Name: John Redding

	 	 	 Title:   VP/Portfolio Manager

  

 40 

			
	EATON VANCE VT FLOATING-RATE
INCOME FUND, as a Lender
		
	By: 	 	 /s/ John Redding

	 	 	 Name: John Redding

	 	 	 Title:   VP/Portfolio Manager

  

 41 

			
	EATON VANCE SENIOR INCOME TRUST, as a Lender
		
	By: 	 	 /s/ John Redding

	 	 	 Name: John Redding

	 	 	 Title:   VP/Portfolio Manager

	
	EATON VANCE SENIOR FLOATING-RATE TRUST, as a Lender
		
	By:	 	 /s/ John Redding

	 	 	 Name: John Redding

	 	 	 Title:   VP/Portfolio Manager

  

 42 

			
	EATON VANCE FLOATING-RATE INCOME TRUST, as a Lender
		
	By: 	 	 /s/ John Redding

	 	 	 Name: John Redding

	 	 	 Title:   VP/Portfolio Manager

  

 43 

			
	EATON VANCE LIMITED DURATION
INCOME FUND, as a Lender
		
	By: 	 	 /s/ John Redding

	 	 	 Name: John Redding

	 	 	 Title:   VP/Portfolio Manager

  

 44 

			
	EATON VANCE INSTITUTIONAL SENIOR LOAN FUND, as a Lender
		
	By: 	 	 /s/ John Redding

	 	 	 Name: John Redding

	 	 	 Title:   VP/Portfolio Manager

  

 45 

			
	BIG SKY SENIOR LOAN FUND, LTD., as a Lender
		
	By: 	 	 /s/ John Redding

	 	 	 Name: John Redding

	 	 	 Title:   VP/Portfolio Manager

  

 46 

			
	 EATON VANCE CO. III, LTD, as a Lender

		
	By: 	 	 /s/ John Redding

	 	 	 Name: John Redding

	 	 	 Title:   VP/Portfolio Manager

  

 47 

			
	 EATON VANCE CO. VI., LTD, as a Lender

		
	 By:
	 	 /s/ John Redding

	 	 	 Name:   John Redding

	 	 	 Title:     VP/Portfolio Manager

  

 48 

			
	 BIG SKY III SENIOR LOAN TRUST, as Lender

		
	 By:
	 	 /s/ John Redding

	 	 	 Name:   John Redding

	 	 	 Title:     VP/Portfolio Manager

  

 49 

			
	CONSTANTINUS EATON VANCE CO. V, LTD., as Lender
		
	 By:
	 	 /s/ John Redding

	 	 	 Name:   John Redding

	 	 	 Title:     VP/Portfolio Manager

  

 50 

			
	Deutsche Bank Trust Company Americas, as a Lender
		
	 By:
	 	 /s/ Carin M. Keegan

	 	 	 Name:   Carin M. Keegan
 Title:     Vice President

		
	 By:
	 	 /s/ Omayra Laucella

	 	 	 Name:   Omayra Laucella
 Title:     Vice President

  

 51 

			
	Sankaty High Yield Asset Partners, L.P., as a
Lender
		
	 By:
	 	 /s/ Timothy M. Barns

	 	 	 Name:   Timothy M. Barns
 Title:     Senior Vice President

  

 52 

			
	Sankaty Advisors, LLC as Collateral Manager for Race Point II CLO, Limited, as Term Lender, as a Lender
		
	 By:
	 	 /s/ Timothy M. Barns

	 	 	 Name:   Timothy M. Barns
 Title:     Senior Vice President

  

 53 

			
	Sankaty Advisors, LLC as Collateral Manager for Race Point CLO, Limited, as Term Lender, as a Lender
		
	 By:
	 	 /s/ Timothy M. Barns

	 	 	 Name:   Timothy M. Barns
 Title:     Senior Vice President

  

 54 

			
	Sankaty Advisors, LLC as Collateral Manager for Castle Hill II INGOTS, Ltd., as Term Lender, as a Lender
		
	 By:
	 	 /s/ Timothy M. Barns

	 	 	 Name:   Timothy M. Barns
 Title:     Senior Vice President

  

 55 

			
	Sankaty Advisors, LLC as Collateral Manager for Castle Hill I INGOTS, Ltd., as Term Lender, as a Lender
		
	 By:
	 	 /s/ Timothy M. Barns

	 	 	 Name:   Timothy M. Barns
 Title:     Senior Vice President

  

 56 

			
	Sankaty Advisors, LLC as Collateral Manager for Brant Point II CBO 2000-1 LTD., as Term Lender, as a Lender
		
	 By:
	 	 /s/ Timothy M. Barns

	 	 	 Name:   Timothy M. Barns
 Title:     Senior Vice President

  

 57 

			
	Sankaty Advisors, LLC as Collateral Manager for Brant Point II CBO 1999-1 LTD., as Term Lender, as a Lender
		
	 By:
	 	 /s/ Timothy M. Barns

	 	 	 Name:   Timothy M. Barns
 Title:     Senior Vice President

  

 58

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