Document:

Exhibit 10.2

Execution Version

CONTRIBUTION AGREEMENT

BY AND BETWEEN

BRITESMILE, INC.

AND

BRITESMILE SPAS, LLC

DATED AS OF

JANUARY 13, 2006

TABLE OF CONTENTS

	
   
 	
   
 	
   
 	
  
Page
  
	
   
 	
   
 	
   
 	
  

  
	
  
ARTICLE 1.   DEFINITIONS
  	
  
2
  
	
   
  	
  
1.1
  	
  
“Action”
  	
  
2
  
	
  
 
  	
  
1.2
  	
  
“Affiliate”
  	
  
2
  
	
  
 
  	
  
1.3
  	
  
“Agreement”
  	
  
2
  
	
  
 
  	
  
1.4
  	
  
“Associated   Center Business”
  	
  
2
  
	
  
 
  	
  
1.5
  	
  
“Assignment   of Contracts”
  	
  
2
  
	
  
 
  	
  
1.6
  	
  
“Assumption   Agreement”
  	
  
2
  
	
   
  	
  
1.7
  	
  
“BSML”
  	
  
2
  
	
  
 
  	
  
1.8
  	
  
“Consents”
  	
  
2
  
	
  
 
  	
  
1.9
  	
  
“Contribution”
  	
  
2
  
	
  
 
  	
  
1.10
  	
  
“Contribution   Date”
  	
  
2
  
	
  
 
  	
  
1.11
  	
  
“Contributed   Assets”
  	
  
2
  
	
  
 
  	
  
1.12
  	
  
“Contributed   Employees”
  	
  
2
  
	
   
  	
  
1.13
  	
  
“Contribution   Liabilities”
  	
  
2
  
	
  
 
  	
  
1.14
  	
  
“Excluded   Assets”
  	
  
3
  
	
  
 
  	
  
1.15
  	
  
“Governmental   Authority”
  	
  
3
  
	
  
 
  	
  
1.16
  	
  
“Information”
  	
  
3
  
	
  
 
  	
  
1.17
  	
  
“Instrument   of Assignment”
  	
  
3
  
	
  
 
  	
  
1.18
  	
  
“Liabilities”
  	
  
3
  
	
   
  	
  
1.19
  	
  
“Person”
  	
  
3
  
	
  
 
  	
  
1.20
  	
  
“PTO”
  	
  
3
  
	
  
 
  	
  
1.21
  	
  
“Securities”
  	
  
3
  
	
  
 
  	
  
1.22
  	
  
“Spa   Centers”
  	
  
3
  
	
  
 
  	
  
1.23
  	
  
“Spas”
  	
  
3
  
	
  
 
  	
  
1.24
  	
  
“Spa   Business”
  	
  
3
  
	
   
  	
  
1.25
  	
  
“Thai Spa”
  	
  
3
  
	
  
 
  	
  
 
  	
  
 
  	
   
 
	
  
ARTICLE 2.   THE CONTRIBUTION
  	
  
4
  
	
  
 
  	
  
2.1
  	
  
Contribution   of Assets and Assumption of Liabilities
  	
  
4
  
	
  
 
  	
  
2.2
  	
  
Consideration   for Contribution of Assets
  	
  
5
  
	
  
 
  	
  
2.3
  	
  
Termination   of Other Agreements
  	
  
5
  
	
   
  	
  
2.4
  	
  
Contributions   Not Effected On or Prior to the Contribution Date
  	
  
5
  
	
  
 
  	
  
2.5
  	
  
Disclaimer   of Representations and Warranties
  	
  
5
  
	
  
 
  	
  
2.6
  	
  
Spa License   Agreement
  	
  
6
  
	
  
 
  	
  
 
  	
  
 
  	
   
 
	
  
ARTICLE 3.   CLOSING MATTERS
  	
  
7
  
	
  
 
  	
  
3.1
  	
  
Closing
  	
  
7
  
	
   
  	
  
3.2
  	
  
Execution of   Instruments of Conveyance
  	
  
7
  
	
  
 
  	
  
3.3
  	
  
Conditions   Precedent to the Contribution
  	
  
7
  

i

	
  
ARTICLE 4.   EMPLOYEE MATTERS
  	
  
7
  
	
  
 
  	
  
4.1
  	
  
Contributed   Employees
  	
  
7
  
	
  
 
  	
  
4.2
  	
  
Benefits
  	
  
8
  
	
   
  	
  
4.3
  	
  
Severance
  	
  
8
  
	
  
 
  	
  
4.4
  	
  
Paid Time   Off
  	
  
8
  
	
  
 
  	
  
 
  	
  
 
  	
   
 
	
  
ARTICLE 5.   MUTUAL RELEASE
  	
  
8
  
	
  
 
  	
  
5.1
  	
  
Release of   Claims
  	
  
8
  
	
  
 
  	
  
 
  	
  
 
  	
   
 
	
  
ARTICLE 6.   MISCELLANEOUS
  	
  
9
  
	
   
  	
  
6.1
  	
  
Further   Assurances
  	
  
9
  
	
  
 
  	
  
6.2
  	
  
Survival
  	
  
10
  
	
  
 
  	
  
6.3
  	
  
Counterparts;   Entire Agreement
  	
  
10
  
	
  
 
  	
  
6.4
  	
  
Governing   Law
  	
  
10
  
	
  
 
  	
  
6.5
  	
  
Assignability
  	
  
10
  
	
  
 
  	
  
6.6
  	
  
Notices
  	
  
10
  
	
   
  	
  
6.7
  	
  
No Third   Party Beneficiaries
  	
  
11
  
	
  
 
  	
  
6.8
  	
  
Severability
  	
  
11
  
	
  
 
  	
  
6.9
  	
  
Publicity
  	
  
11
  
	
  
 
  	
  
6.10
  	
  
Headings
  	
  
11
  
	
  
 
  	
  
6.11
  	
  
Survival of   Covenants
  	
  
11
  
	
  
 
  	
  
6.12
  	
  
Waivers of   Default
  	
  
11
  
	
   
  	
  
6.13
  	
  
Amendments
  	
  
12
  
	
  
 
  	
  
6.14
  	
  
Interpretation
  	
  
12
  

SCHEDULE INDEX

	
   
 	
  
Schedule 1
  	
  
 
  	
  
Contributed   Assets
  
	
   
 	
  
Schedule 2
  	
  
 
  	
  
Excluded   Assets
  
	
   
 	
  
Schedule 3
  	
  
 
  	
  
Contributed   Liabilities
  
	
   
 	
  Schedule 4
  	
  
 
  	
  
Contributed   Employees
  

EXHIBIT INDEX

	
   
 	
  
Exhibit A
  	
  
 
  	
  
Assignment   of Contracts
  
	
   
 	
  
Exhibit B
  	
  
 
  	
  
Assumption   Agreement
  
	
   
 	
  
Exhibit C
  	
  
 
  	
  
Instrument   of Assignment
  
	
   
 	
  
Exhibit D
  	
  
 
  	
  
Corporate   Severance Policy
  

ii

CONTRIBUTION AGREEMENT

	
  
 
  	
  
                    THIS   CONTRIBUTION AGREEMENT (including all Exhibits and   Schedules hereto, the “Agreement”),   dated as of January 13, 2006, is by and between BriteSmile, Inc., a Utah   corporation (“BSML”),   and BRITESMILE SPAS, LLC, a Delaware limited liability company (“Spas”).  Capitalized terms used herein and not   otherwise defined shall have the respective meanings assigned to them in   Article 1 hereof.
  
	
  
 
  	
  
 
  
	
  
 
  	
  
                    WHEREAS,   BSML is currently engaged, among other things, in the business (1) of owning   or operating dedicated centers (the “Spa Centers”), in retail locations, in   which the dental services provided or authorized to be provided are limited   to providing tooth whitening, orthodontics, veneers, x-rays, cleaning and   prophys to consumers and (2) selling in such dedicated centers and in other   retail channels not including professional dental offices teeth whitening   products, including its BriteSmile-to-Go pen, toothpaste, mouthwash and gum   products, directly and through third party retail establishments ((1) and (2)   being referred to collectively as, the “Spa Business”);
  
	
   
  	
  
 
  
	
  
 
  	
  
                    WHEREAS,   BSML is also engaged in, among other things, offering teeth-whitening   products and systems through existing independent dental offices worldwide,   known as BriteSmile Professional Teeth Whitening Associated Centers (the “Associated Center Business”);
  
	
  
 
  	
  
 
  
	
  
 
  	
  
                    WHEREAS,   Spas was formed in December 2005 to engage in and operate the Spa Business in   connection with the transactions contemplated by the Limited Liability   Company Membership Purchase Agreement, dated as of the date hereof (the “Purchase Agreement”),   by and between BSML and Dental Spas, LLC (the “Buyer”) and in contemplation thereof,   has entered into a License Agreement, dated as of December 30, 2005, by and   among BSML, certain of its Affiliates and Spas (the “Spa License”)   pursuant to which BSML and such Affiliates have licensed certain intellectual   property and related rights to Spas;
  
	
  
 
  	
  
 
  
	
  
 
  	
  
                    WHEREAS,   in exchange for 100% of the membership interests of Spas (the “Securities”), the Board of Directors of   BSML has determined that it is in the best interests of BSML to contribute   certain assets to Spas that are used by BSML in the operation of the Spa   Business and the Manager of Spas has determined that it is in the best   interests of Spas to cause Spas to assume certain liabilities that are   related to such assets and to the operation and continued operation of the   Spa Business, all as more fully described in and, in each case, subject to   the terms and conditions in this Agreement (collectively, the “Contribution”); and
  
	
   
  	
  
 
  
	
  
 
  	
  
                    WHEREAS,   it is appropriate and desirable to set forth the principal transactions   required to effect the Contribution and implement certain other agreements   that will govern matters relating to the Contribution and the relationship of   BSML and Spas following the Contribution;
  

	
  
 
  	
  
                    NOW,   THEREFORE, in consideration of   the mutual covenants and agreements hereinafter set forth, and for other good   and valuable consideration, the receipt and sufficiency of which are hereby   acknowledged, the parties intending to be legally bound, agree as follows:
  

ARTICLE 1.
 DEFINITIONS

	
  
 
  	
  
                    For   the purpose of this Agreement the following terms shall have the following   meanings:
  
	
   
  	
  
 
  
	
  
 
  	
  
          1.1     “Action”   means any demand, action, suit, counter suit, arbitration, inquiry,   proceeding, or investigation by or before any federal, state, local, foreign,   or international Governmental Authority or any arbitration or mediation   tribunal.
  
	
  
 
  	
  
 
  
	
  
 
  	
  
          1.2     “Affiliate”   of any Person means a Person that controls, is controlled by, or is under   common control with such Person.  As   used herein, “control” means the possession, directly or indirectly, of the   power to direct or cause the direction of the management and policies of such   entity, whether through ownership of voting securities or other interests, by   contract or otherwise.
  
	
  
 
  	
  
 
  
	
  
 
  	
  
          1.3     “Agreement”   shall have the meaning set forth in the Preamble.
  
	
  
 
  	
  
 
  
	
   
  	
  
          1.4     “Associated   Center Business” shall have the meaning set forth in   the Recitals.
  
	
  
 
  	
  
 
  
	
  
 
  	
  
          1.5     “Assignment   of Contracts” means the Assignment of Contracts by   and between Spas and BSML in the form attached hereto as Exhibit A.
  
	
  
 
  	
  
 
  
	
  
 
  	
  
          1.6     “Assumption   Agreement” means the Assumption Agreement by and   between Spas and BSML in the form attached hereto as Exhibit B.
  
	
  
 
  	
  
 
  
	
  
 
  	
  
          1.7     “BSML”   shall have the meaning set forth in the Preamble.
  
	
  
 
  	
  
 
  
	
   
  	
  
          1.8     “Consents”   means any consents, waivers or approvals from, or notification requirements   to, any third Person or Governmental Authority.
  
	
  
 
  	
  
 
  
	
  
 
  	
  
          1.9     “Contribution”   shall have the meaning set forth in the Recitals.
  
	
  
 
  	
  
 
  
	
  
 
  	
  
          1.10   “Contribution   Date” shall have the meaning set forth in Section   3.1.
  
	
  
 
  	
  
 
  
	
  
 
  	
  
          1.11   “Contributed   Assets” means the assets listed on Schedule 1 hereto; provided that the   “Contributed Assets” shall not include any assets constituting an Excluded   Asset.
  
	
  
 
  	
  
 
  
	
   
  	
  
          1.12   “Contributed   Employees” shall have the meaning set forth in   Section 4.1.
  
	
  
 
  	
  
 
  
	
  
 
  	
  
          1.13   “Contribution   Liabilities” shall have the meaning set forth in   Section 3.1.
  

2

	
  
 
  	
  
          1.14   “Excluded   Assets” means the assets listed on Schedule 2 hereto and any and all assets   that are expressly contemplated by this Agreement or any Ancillary Agreement   (or the Schedules or Exhibits hereto or thereto) as assets to be retained by   BSML.
  
	
  
 
  	
  
 
  
	
  
 
  	
  
          1.15   “Governmental   Authority” shall mean any federal, state, local,   foreign, or international court, government, department, commission, board,   bureau, agency, official, or other regulatory, administrative, or   governmental authority.
  
	
   
  	
  
 
  
	
  
 
  	
  
          1.16   “Information”   means information, whether or not patentable or copyrightable, in written,   oral, electronic or other tangible or intangible forms, stored in any medium,   including studies, reports, records, books, contracts, instruments, surveys,   discoveries, ideas, concepts, know-how, techniques, designs, specifications,   drawings, blueprints, diagrams, models, prototypes, samples, flow charts,   data, computer data, disks, diskettes, tapes, computer programs or other   software, marketing plans, customer names, communications by or to attorneys   (including attorney-client privileged communications), memos and other   materials prepared by attorneys or under their direction (including attorney   work product), and other technical, financial, employee or business   information or data but in no event shall be deemed to include any patents,   trademarks,
service marks, trade names, Internet domain names, copyrights,   proprietary technology, trade secrets, know-how or other similar rights (or any   applications and registrations relating to the foregoing) of BSML or its   Affiliates which are not Contributed Assets.
  
	
  
 
  	
  
 
  
	
  
 
  	
  
          1.17   “Instrument   of Assignment” means the Instrument of Assignment by   BSML in favor of Spas in the form attached hereto as Exhibit C.
  
	
  
 
  	
  
 
  
	
   
  	
  
          1.18   “Liabilities”   means with respect to any Person, any liability or obligation of such Person   of any kind, character or description, whether known or unknown, absolute or   contingent, accrued or unaccrued, disputed or undisputed, liquidated or   unliquidated, secured or unsecured, joint or several, due or to become due,   vested or unvested, executory, determined, determinable or otherwise, and   whether or not the same is required to be accrued on the financial statements   of such Person.
  
	
  
 
  	
  
 
  
	
  
 
  	
  
          1.19   “Person”   means an individual, partnership, corporation (including a business trust),   joint stock company, trust, unincorporated association, joint venture,   limited liability company or other entity, or a government or any political   subdivision or agency thereof.
  
	
  
 
  	
  
 
  
	
  
 
  	
  
          1.20   “PTO”   shall have the meaning set forth in Section 4.4.
  
	
  
 
  	
  
 
  
	
  
 
  	
  
          1.21   “Securities”   shall have the meaning set forth in the Recitals.
  
	
   
  	
  
 
  
	
  
 
  	
  
          1.22   “Spa   Centers” shall have the meaning set forth in the   Recitals.
  
	
  
 
  	
  
 
  
	
  
 
  	
  
          1.23   “Spas”   shall have the meaning set forth in the Preamble.
  
	
  
 
  	
  
 
  
	
  
 
  	
  
          1.24   “Spa   Business” shall have the meaning   set forth in the Recitals.
  
	  
	  

	  
	           1.25   “Thai Spa” means BriteSmile Whitening Spa (Thailand) Limited in which BSML has an equity interest, subject to certain first refusal rights on the transfer of such interest.

3

ARTICLE 2.
 THE CONTRIBUTION

	
  
 
  	
  
          2.1     Contribution   of Assets and Assumption of Liabilities.
  
	
  
 
  	
  
 
  
	
  
 
  	
  
                    (a)     Contribution   by BSML.  On and subject to the terms   of this Agreement, BSML hereby agrees to, and to cause its applicable   Affiliates to, on the Contribution Date, assign, contribute, transfer, sell,   convey, and deliver to Spas, and Spas hereby agrees to accept from BSML and   such Affiliates, all of BSML’s and such Affiliates’ respective right, title,   and interest in and to the Contributed Assets, so that neither BSML nor its   Affiliates retain any right, title or interest in or to the Contributed   Assets.
  
	
  
 
  	
  
 
  
	
  
 
  	
  
                    (b)     Assumption   by Spas.  On and subject to the terms   of this Agreement, BSML hereby agrees to, and to cause its applicable   Affiliates to, assign, transfer and delegate to Spas on the Contribution Date,   and in partial consideration of BSML’s obligations under this Agreement, Spas   hereby agrees to assume on the Contribution Date, and agrees to faithfully   perform and fulfill, all of the following Liabilities (the “Contributed Liabilities”),   in accordance with their respective terms:
  
	
   
  	
  
 
  
	
  
 
  	
  
                                        (i)     the   Liabilities listed on Schedule 3   hereto;
  
	
  
 
  	
  
 
  
	
  
 
  	
  
                                        (ii)    all   Liabilities relating to the operation of the Contributed Assets, including,   but not limited to, any assumed contract included in the Contributed Assets   other than Liabilities arising prior to the Contribution Date which have not   been disclosed to the Buyer;
  
	
  
 
  	
  
 
  
	
  
 
  	
  
                                        (iii)   all   Liabilities of the Spa Centers disclosed to the Buyer outstanding on the   Contribution Date;
  
	
   
  	
  
 
  
	
  
 
  	
  
                                        (iv)   all   Liabilities relating to the Contributed Employees arising from and after the   Contribution Date;
  
	
  
 
  	
  
 
  
	
  
 
  	
  
                                        (v)     all   liabilities relating to severance obligations of and PTO to be honored by   Spas pursuant to Section 4.3 and Section 4.4, respectively; and
  
	
  
 
  	
  
 
  
	
  
 
  	
  
                                        (vi)   any   and all other Liabilities that are expressly contemplated by this Agreement,   the Assignment of Contracts, the Assumption Agreement or the Instrument of   Assignment (the Assignment of Contracts, the Assumption Agreement and the   Instrument of Assignment being referred to hereinafter collectively as, the “Ancillary Agreements”)   (or the Schedules or Exhibits hereto or thereto) as Liabilities to be assumed   by Spas.
  

4

	
  
 
  	
  
                    Notwithstanding   anything to the contrary herein, in no event shall Spas be liable for any   incentive compensation or other similar payments owing to any P.C. Dentist   (as such term is defined in the Purchase Agreement) arising prior to the   Contribution Date.
  
	
  
 
  	
  
 
  
	
  
 
  	
  
          2.2     Consideration   for Contribution of Assets.  Upon the terms and subject to the   conditions contained herein, as additional consideration for the transfer of   the Contributed Assets by BSML and its Affiliates to Spas, Spas shall issue   to BSML the Securities, and Spas shall assume the Contributed Liabilities   pursuant to Section 2.1(b) above.
  
	
  
 
  	
  
 
  
	
  
 
  	
  
          2.3     Termination   of Other Agreements.  Except with respect to this Agreement, the Ancillary Agreements   (and agreements expressly contemplated herein or therein to survive by their   terms) and the Spa License, BSML and Spas hereby terminate any and all   written or oral agreements, arrangements, commitments or understandings,   between or among them, effective as of the Contribution Date; and each party   shall, at the reasonable request of any other party, take, or cause to be   taken, such other actions as may be necessary to effect the foregoing.  The parties acknowledge that nothing   contained herein (including the schedules hereto) shall be deemed to   contradict, supersede or otherwise affect, modify or alter the provisions, rights   or obligations of BSML or its Affiliates or of Spas under the Spa License.
  
	
   
  	
  
 
  
	
  
 
  	
  
          2.4     Contributions   Not Effected On or Prior to the Contribution Date.  In the event   that at any time after the Contribution Date any party hereto shall receive   or otherwise possess an asset that is allocated to the other Person pursuant   to this Agreement or any Ancillary Agreement, such party shall promptly   transfer or cause to be contributed, such asset to such Person so entitled   hereunder. Prior to such transfer, the Person receiving or possessing such asset shall hold such asset in trust for such other Person (at the expense of the party entitled thereto). In the event that any assignment or assumption of Liabilities contemplated by this ARTICLE 2 has not been consummated effective as of the Contribution Date, the party retaining such Liabilities shall thereafter hold such Liabilities for the account of the party assuming such Liability or to whom such Liability is to be assigned pursuant hereto, and in each such case shall take such other actions as may be reasonably required in order
to place the parties, insofar as reasonably possible, in the same position as would have existed had such asset been contributed, or such Liability been assigned or assumed as contemplated hereby. As and when any such asset or Liability becomes transferable, assignable or assumable, as the case may be, such transfer, assignment, or assumption shall be effected forthwith.
  
	
  
 
  	
  
 
  
	
   
  	
  
          2.5     Disclaimer   of Representations and Warranties.  Each of BSML and Spas understands and   agrees that, except as expressly set forth herein or in any Ancillary   Agreement, no party to this Agreement, any Ancillary Agreement or any other   agreement or document contemplated by this Agreement (with the exception of   the Purchase Agreement, which contains certain representations, warranties   and covenants of BSML and the Buyer, and the Spa License), any Ancillary   Agreement or otherwise, is representing or warranting in any way as to the   assets, businesses, technologies or Liabilities contributed or assumed as   contemplated hereby or thereby, including, without limitation, any   representations or warranties relating to (a) any Consents or approvals   required in connection therewith, (b) the value of any of the foregoing,
  

5

	
  
 
  	
  
(c) the   freedom from any liens, security interests, encumbrances or restrictions on   transfer, (d) the absence of any defenses or right of setoff or freedom from   counterclaim with respect to any claim or other asset, or (e) the legal   sufficiency of any assignment, document or instrument delivered hereunder to   convey title to any asset or thing of value upon the execution, delivery and   filing hereof or thereof.  Except as   may expressly be set forth herein or in any Ancillary Agreement, all such   assets are being contributed on an “as is,” “where is” basis (provided that the absence of the   representations and warranties from the parties shall not negate the   allocation of Liabilities under this Agreement and shall have no effect on   any manufacturer’s, seller’s or other third party warranty that is intended   to be contributed with such assets) and, subject to the parties’ obligations   under
Section 2.4, Spas shall bear the economic and legal risks that   any conveyance shall prove to be insufficient to vest in the transferee good   and marketable title, free and clear of any liens, security interests,   encumbrances or restrictions on transfer.
  
	
   
  	
  
 
  
	
  
 
  	
  
          2.6     Spa   License Agreement.
  

	
  
 
  	
  
 
  	
  
(a)
  	
  
In this   Section 2.6, Licensed Know-How, Licensed Products, LICENSORS and Retail Field   shall all have the definitions given to them in the Spa License.  For the avoidance of doubt, upon entering   into the Spa License it was the mutual intent of BSML and Spas that:
  
	
  
 
  	
  
 
  	
  
 
  	
  
 
  	
  
 
  
	
  
 
  	
  
 
  	
  
 
  	
  
(i)
  	
  
Spas has the   right to sell the BriteSmile-to-Go pen and the BriteSmile Whitening   Toothpaste in Spas and in the Retail Field without any limitation on the   ability of the purchasers of such products to use them and without triggering   any right for BSML to terminate the Spa License;
  
	
   
  	
  
 
  	
  
 
  	
  
 
  	
  
 
  
	
  
 
  	
  
 
  	
  
 
  	
  
(ii)
  	
  
The   deficiency correction procedure described in Section 3.2 of the Spa License   is intended to apply to all patents, trademarks, copyrights or know-how owned   by or licensed to LICENSORS as of the date of the Spa License; and
  
	
  
 
  	
  
 
  	
  
 
  	
  
 
  	
  
 
  
	
  
 
  	
  
 
  	
  
 
  	
  
(iii)
  	
  
The grant of   the right to sell mouthwash in the Retail Field does not trigger any right of   BSML to terminate the Spa License.
  
	
  
 
  	
  
 
  	
  
 
  	
  
 
  	
  
 
  
	
   
  	
  
 
  	
  
(b)
  	
  
Nothing   contained in this Section 2.6 shall constitute any representation or warranty   of either party hereto or create any liability of any nature whatsoever of   BSML or its Affiliates to Spas or its Affiliates, including the Buyer and its   Affiliates.
  

6

ARTICLE 3.
 CLOSING MATTERS

	
  
 
  	
  
          3.1     Closing.  Upon the terms and subject to the   conditions of this Agreement, the consummation of the Contribution and other   transactions (the “Closing”)   contemplated herein shall take place at the offices of Skadden, Arps, Slate,   Meagher & Flom, LLP, Four Embarcadero Center, San Francisco, California,   simultaneously with the closing of the transactions contemplated by the   Purchase Agreement (the date on which Closing is effective, the “Contribution Date”),   unless the parties hereto otherwise agree.
  
	
  
 
  	
  
 
  
	
  
 
  	
  
          3.2     Execution   of Instruments of Conveyance.  In furtherance of the contribution,   assignment and conveyance of the Contributed Assets and the assumption of the   Contributed Liabilities set forth in Sections 2.1(a) and 2.1(b),   at the Closing, (a) BSML shall execute and deliver, and shall cause any   applicable Affiliate to execute and deliver, such Bills of Sale, certificates   of title, Assignments of Contracts and other instruments of transfer,   conveyance and assignment, if any, as and to the extent reasonably necessary   to evidence the transfer, conveyance and assignment of all of BSML’s right,   title and interest in and to the Contributed Assets to Spas and (b) Spas   shall execute and deliver, to BSML and its Affiliates, such assumptions of   contracts and other instruments of assumption, if any, as and to the extent   reasonably
necessary to evidence the valid and effective assumption of the   Contributed Liabilities by Spas, including the Assumption Agreement.
  
	
   
  	
  
 
  
	
  
 
  	
  
          3.3     Conditions   Precedent to the Contribution.  The parties’ obligations hereunder are   subject to the following conditions that must be satisfied prior to   consummation of the Contribution:
  
	
  
 
  	
  
 
  
	
  
 
  	
  
                    (a)     Spas’   operating agreement shall reflect the issuance to and ownership of the   Securities by BSML, and such operating agreement shall have been delivered to   BSML.
  
	
  
 
  	
  
 
  
	
  
 
  	
  
                    (b)     There   shall be no actual or threatened Action before any court or other   Governmental Agency seeking to restrain or invalidate this Agreement, the   Contribution, or any other transaction contemplated by this Agreement.
  

ARTICLE 4.
 EMPLOYEE MATTERS

	
  
 
  	
  
          4.1     Contributed   Employees.    Spas shall offer employment to the employees of BSML set forth on Schedule 4 hereto effective as of the   Contribution Date.  Such personnel who   accept such employment (the “Contributed Employees”) will be employed by Spas with   the same per annum salaries, or hourly rates of pay under which such   Contributed Employees were employed by BSML immediately prior to the   Contribution Date, but nothing herein shall be deemed to create an employment   contract between Spas, the Buyer and/or any of their respective Affiliates   and any such Contributed Employee.    Contributed Employees shall be employees at will (unless a written   employment agreement to the contrary has been entered into by Spas with such   Contributed Employee or expressly assumed in writing by Spas) and nothing   express or
implied in this Agreement will obligate Spas to provide continued   employment to any such Contributed Employee for any specific period of time   following the Contribution Date.
  

7

	
  
 
  	
  
          4.2     Benefits.  Subject to Sections 4.3 and 4.4,   from and after the Contribution Date, the Contributed Employees shall be   entitled to participate in all benefits and welfare plans and programs   provided by Spas to its employees generally subject, however, to the   generally applicable eligibility and other provisions of the various plans   and programs in effect from time to time.    From and after the Contribution Date, the Contributed Employees shall   cease to participate in the benefits and welfare plans and programs of BSML,   except as otherwise required by such plans or programs; provided that Spas shall honor the terms   of BSML’s severance policy as provided in Section 4.3 below.
  
	
   
  	
  
 
  
	
  
 
  	
  
          4.3     Severance.  In the event that Spas determines that it   is advisable to terminate the employment of any Contributed Employee, Spas   shall pay the applicable severance benefits to such Contributed Employee   consistent with BSML’s corporate severance policy in effect on the   Contribution Date, a description of which is attached hereto as Exhibit D.  All severance costs arising from the termination of any of   Contributed Employees shall be the exclusive responsibility of Spas and shall   be deemed to be an Assumed Liability hereunder; however, Spas shall in no   case assume any liabilities of BSML or other previous employer under any   retention agreements executed by such previous employer with any Contributed   Employees.  The execution of this   Agreement and the consummation by the parties of the Contribution shall not,   in and of
itself, be deemed to be a termination of a Contributed Employee’s   employment in a manner that would give rise to any severance obligation of   BSML.
  
	
  
 
  	
  
 
  
	
  
 
  	
  
          4.4     Paid   Time Off.    All “paid time off” balances (“PTO”) accrued on the books of BSML with   respect to each Contributed Employee through the day prior to Contribution   Date shall be honored by Spas from and after the Contribution Date.
  
	
  
 
  	
  
 
  
	
  ARTICLE 5.
  
	
  
MUTUAL RELEASE
  
	
  
 
  	
  
 
  
	
  
 
  	
  
          5.1     Release   of Claims.
  
	
  
 
  	
  
 
  
	
  
                              (a)     Except   as provided in Section 5.1(c), to the extent permitted by law,   effective as of the Contribution Date, Spas does hereby, for itself and its   successors and assigns, release and forever discharge BSML and each of its   Affiliates, their respective successors and assigns, and all Persons who at   any time prior to the Contribution Date have been shareholders, directors,   officers, agents or employees of BSML or any of its Affiliates (in each case,   in their respective capacities as such), and their respective heirs,   executors, administrators, successors and assigns, from any and all   Liabilities whatsoever, whether at law or in equity (including any right of   contribution), whether arising under any contract or agreement, by
operation   of law or otherwise, existing or arising from any facts or events occurring   or failing to occur or alleged to have occurred or to have failed to occur or   any conditions existing or alleged to have existed on or before the   Contribution Date, including in connection with the transactions and all   other activities to implement the Contribution.
  
	
   
  
	
  
                             (b)     Except   as provided in Section 5.1(c), to the extent permitted by law,   effective as of the Contribution Date, BSML does hereby, for itself and its   successors and assigns,  release and   forever discharge Spas and each of its Affiliates (including the Buyer and   its Affiliates), their respective successors and assigns, and all Persons who   at any time prior to the Contribution Date have been directors, officers,   agents or employees of Spas (in each case, in their respective capacities as   such), and their respective heirs, executors, administrators, successors and   assigns, from any and all Liabilities whatsoever, whether at law or in equity   (including any right of contribution), whether arising under any contract or   agreement, by
operation of law or otherwise, existing or arising from any   facts or events occurring or failing to occur or alleged to have occurred or   to have failed to occur or any conditions existing or alleged to have existed   on or before the Contribution Date, including in connection with the   transactions and all other activities to implement the Contribution.
  

8

                             (c)     Nothing contained in Sections 5.1(a) or (b) shall negate the allocation of assets or Liabilities under this Agreement or otherwise impair any right of BSML (including, without limitation, on behalf of BSML’s Affiliates) or Spas (including, without limitation, on behalf of Spas’ Affiliates, including the Buyer) to enforce this Agreement or any Ancillary Agreement, in each case in accordance with its terms.  Without limiting the generality of the preceding sentence, nothing contained in Sections 5.1(a) and (b) shall release BSML or Spas, as applicable, from (i) any Liability provided in or resulting from this Agreement or any Ancillary Agreement or (ii) any Liability, contingent or otherwise, assumed, contributed or
assigned to such Person in accordance with, or any other Liability of any Person under, this Agreement or any Ancillary Agreement.

                             (d)     Spas shall not make any claim or demand or commence any Action asserting any claim or demand, including any claim of contribution or indemnification, against BSML or any of its Affiliates or any other Person released pursuant to Section 5.1(a), with respect to any Liabilities released pursuant to Section 5.1(a), except as permitted by Section 5.1(c).  BSML shall not make any claim or demand or commence any Action asserting any claim or demand, including any claim of contribution or indemnification, against Spas or any of its Affiliates or any other Person released pursuant to Section 5.1(b), with respect to any Liabilities released pursuant to Section 5.1(b), except as permitted by Section 5.1(c).

ARTICLE 6.
 MISCELLANEOUS

	
  
 
  	
  
          6.1     Further   Assurances.    In addition to the actions specifically provided for elsewhere in this   Agreement, each of the parties hereto shall use its commercially reasonable   efforts, prior to, on and after the Contribution Date, to take, or cause to   be taken, all actions, and to do, or cause to be done, all things, reasonably   necessary, proper or advisable under applicable laws, regulations and   agreements to consummate and make effective the transactions contemplated by   this Agreement and the Ancillary Agreements.    Without limiting the foregoing, prior to, on and after the   Contribution Date, each party hereto shall cooperate with the other parties,   and without any further consideration, but at the expense of the requesting   party, to execute and deliver, or use its commercially reasonable efforts to   cause to be executed and delivered,
all instruments, including instruments of   conveyance, assignment and transfer, and to make all filings with, and to   obtain all Consents, approvals or authorizations of, any Governmental   Authority or any other Person under any permit, license, agreement, indenture   or other instrument, and to take all such other actions as such party may   reasonably be requested to take by any other party hereto from time to time,   consistent with the terms of this Agreement and the Ancillary Agreements, in   order to effectuate the provisions and purposes of this Agreement and the   Ancillary Agreements and the transfers of the Contributed Assets and the   assignment and assumption of the Contributed Liabilities and the other   transactions contemplated hereby and thereby.
  

9

	
  
 
  	
  
          6.2     Survival.  The provisions hereof shall remain in full   force and effect and shall survive the Contribution Date, except to the   extent otherwise agreed by the parties in writing.
  
	
  
 
  	
  
 
  
	
  
 
  	
  
          6.3     Counterparts;   Entire Agreement.
  
	
  
 
  	
  
 
  
	
  
                             (a)     This   Agreement and each Ancillary Agreement may be executed in two or more   counterparts, all of which shall be considered one and the same agreement,   and shall become effective when one or more counterparts have been signed by   each of the parties and delivered to the other party.
  
	
  
 
  	
  
 
  
	
  
                             (b)     This   Agreement, the Ancillary Agreements and the Exhibits, Schedules and   appendices hereto and thereto contain the entire agreement between the   parties with respect to the subject matter hereof, supersede all previous   agreements, negotiations, discussions, writings, understandings, commitments   and conversations with respect to such subject matter.
  
	
  
 
  	
  
 
  
	
  
 
  	
  
          6.4     Governing   Law.  This   Agreement, except as expressly provided herein, and, unless expressly   provided therein, each Ancillary Agreement, shall be governed by and   construed and interpreted in accordance with the laws of the State of   California, irrespective of the choice of laws principles of the State of   California as to all matters, including matters of validity, construction,   effect, enforceability, performance and remedies.
  
	
  
 
  	
  
 
  
	
  
 
  	
  
          6.5     Assignability.  Except as set forth in any Ancillary   Agreement, this Agreement and each Ancillary Agreement shall be binding upon   and inure to the benefit of the parties hereto and thereto, respectively, and   their respective successors and assigns; provided,   however, that no party hereto   or thereto may assign its respective rights or delegate its respective   obligations under this Agreement or any Ancillary Agreement without the   express prior written consent of the other parties hereto or thereto.
  
	
   
  	
  
 
  
	
  
 
  	
  
          6.6     Notices.  All notices or other communications under   this Agreement or any Ancillary Agreement shall be in writing and shall be   deemed to be duly given when (a) delivered in person or (b) deposited in the   United States mail or private express mail, postage prepaid, addressed as   follows:
  

	
  
 
  	
  
If to BSML,   to:
  
	
  
 
  	
  
 
  
	
  
 
  	
  
          BriteSmile,   Inc.
  
	
  
 
  	
  
          460   North Wiget Lane
  
	
  
 
  	
  
          Walnut   Creek, California  94598
  
	
   
  	
  
          Fax:   (925) 941-6266
  
	
  
 
  	
  
          Attention:  Nhat Ngo
  

10

	
  
 
  	
  
If to Spas,   to:
  
	  
	  

	
  
 
  	
  
BriteSmile   Spas, LLC
  
	
  
 
  	
  
460 North   Wiget Lane
  
	
  
 
  	
  
Walnut   Creek, California  94598
  
	
  
 
  	
  
Fax: (925)   941-6266
  
	
  
 
  	
  
Attention:  Nhat Ngo
  

	
  
 
  	
  
                    Either   party may, by notice to the other party, change the address to which such   notices are to be given.
  
	
  
 
  	
  
 
  
	
  
 
  	
  
          6.7     No   Third Party Beneficiaries.  The provisions of this Agreement and each Ancillary Agreement   are solely for the benefit of the parties and are not intended to confer upon   any Person (including, without limitation, any Contributed Employee) except   the parties any rights or remedies hereunder, and there are no third party   beneficiaries of this Agreement or any Ancillary Agreement and neither this   Agreement nor any Ancillary Agreement shall provide any third Person with any   remedy, claim, liability, reimbursement, claim of action or other right in   excess of those existing without reference to this Agreement or any Ancillary   Agreement.
  
	
  
 
  	
  
 
  
	
  
 
  	
  
          6.8     Severability.  If any provision of this Agreement or any   Ancillary Agreement or the application thereof to any Person or circumstance   is determined by a court of competent jurisdiction to be invalid, void or   unenforceable, the remaining provisions hereof or thereof, or the application   of such provision to Persons or circumstances or in jurisdictions other than   those as to which it has been held invalid or unenforceable, shall remain in   full force and effect and shall in no way be affected, impaired or   invalidated thereby, so long as the economic or legal substance of the   transactions contemplated hereby or thereby, as the case may be, is not   affected in any manner adverse to any party.    Upon such determination, the parties shall negotiate in good faith in   an effort to agree upon such a suitable and equitable provision to effect the
original intent of the parties.
  
	
   
  	
  
 
  
	
  
 
  	
  
          6.9     Publicity.  Each of Spas and BSML shall consult with   each other prior to issuing any press releases or otherwise making public   statements with respect to the Contribution or any of the other transactions   contemplated hereby and prior to making any filings with any Governmental   Authority with respect thereto.
  
	
  
 
  	
  
 
  
	
  
 
  	
  
          6.10     Headings.  The article, section and paragraph   headings contained in this Agreement and in the Ancillary Agreements are for   reference purposes only and shall not affect in any way the meaning or   interpretation of this Agreement or any Ancillary Agreement.
  
	
  
 
  	
  
 
  
	
  
 
  	
  
          6.11     Survival   of Covenants.    Except as expressly set forth in any Ancillary Agreement, the   covenants, representations and warranties contained in this Agreement and   each Ancillary Agreement, and liability for the breach of any obligations   contained herein, shall survive the Contribution.
  
	
   
  	
  
 
  
	
  
 
  	
  
          6.12     Waivers   of Default.    Waiver by any party of any default by the other party of any provision   of this Agreement or any Ancillary Agreement shall not be deemed a waiver by   the waiving party of any subsequent or other default, nor shall it prejudice   the rights of the other party.
  

11

	
  
 
  	
  
          6.13     Amendments.  This Agreement and all Ancillary   Agreements, except to the extent as may otherwise be set forth therein, may   be amended by the written agreement of BSML and Spas.  No provisions of this Agreement or any   Ancillary Agreement shall be deemed waived, amended, supplemented or modified   by any party, unless such waiver, amendment, supplement or modification is in   writing and signed by the authorized representative of the party against whom   it is sought to enforce such waiver, amendment, supplement or modification.
  
	
  
 
  	
  
 
  
	
  
 
  	
  
          6.14     Interpretation. 
Words in the singular shall be held to include the plural and vice versa and
words of one gender shall be held to include the other genders as the context
requires.  The terms “hereof,”
“herein,” and “herewith” and
words of similar import shall, unless otherwise stated, be construed to refer to
this Agreement (or the applicable Ancillary Agreement) as a whole (including all
of the Schedules, Exhibits and appendices hereto and thereto) and not to any
particular provision of this Agreement (or such Ancillary Agreement). 
Article, Section, Exhibit, Schedule and Appendix references are to the Articles,
Sections, Exhibits, Schedules and Appendices to this Agreement (or the
applicable Ancillary Agreement) unless otherwise specified.  The word “including” and words of similar import when used in this
Agreement (or the applicable Ancillary Agreement) shall mean
“including, without limitation,” unless the context
otherwise requires or unless otherwise specified.  The word
“or” shall not be exclusive.
 
	  
	  

	  
	                        IN WITNESS WHEREOF, the patties have caused this CONTRIBUTION AGREEMENT to be executed by their duty authorized representatives on the date first written above.

	
  
 
  	
  
BRITESMILE, INC. 
  
	
  
 
  	
  
 
  
	
  
 
  	
  
By:
  	
  
/s/ ANTHONY   M. PILARO
  
	
  
 
  	
  
 
  	
  

  
	
  
 
  	
  
Name:
  	
  
Anthony M.   Pilaro
  
	
  
 
  	
  
Title:
  	
  
Chairman
  
	
   
  	
  
 
  	
  
 
  
	
  
 
  	
  
BRITESMILE SPAS, LLC
  
	
  
 
  	
  
 
  	
  
 
  
	
  
 
  	
  
By:
  	
  
BriteSmile,   Inc., its Manager
  
	
  
 
  	
  
 
  	
  
 
  
	
  
 
  	
  
By:
  	
  
/s/ NHAT H.   NGO
  
	
  
 
  	
  
 
  	
  

  
	
  
 
  	
  
Name:
  	
  
Nhat H. Ngo
  
	
   
  	
  Title:
  	
  Executive   Vice President
  

12Exhibit 10.1

“[*]” = confidential portions of this document that have been omitted and have been

separately filed with the Securities and Exchange Commission pursuant to an

application for confidential treatment under Rule 24b-2 under the

Securities Exchange Act of 1934, as amended.

(Page 1 of Exhibit A)

MASTER LICENSE AGREEMENT

This Master License Agreement (“Agreement”) is entered into as of January 12, 2006 (“Effective Date”), by and between DKRW Advanced Fuels LLC, a Delaware limited liability corporation with offices located at Two Riverway, Suite 1780, Houston, Texas  77056 (“Licensee”), and Rentech Inc., a Colorado corporation, with offices located at 1331 17th Street, Suite 720, Denver, Colorado 80202 (“Rentech”).  DKRW Energy LLC (“DKRW”) is a party to this Agreement only for purposes of Section 3.  Capitalized terms used herein but not defined herein will have the meaning assigned in the Original Site License Agreement.

             WHEREAS, Rentech possesses a patented application of the Fischer-Tropsch technology for converting synthesis gas into liquid hydrocarbons;

             WHEREAS, Licensee and Rentech have, as of the date of this Agreement, entered into a site license agreement whereby Rentech has licensed such technology to Licensee for use at a plant Licensee is contemplating building at or near Medicine Bow, Carbon County, Wyoming (the “Original Site License Agreement”); and

             WHEREAS, Licensee would like to have the opportunity to enter into additional site license agreements at the license fees provided for in this Agreement and Rentech is willing to grant such opportunities (each a “Site License Agreement”), subject to the terms and conditions of this Agreement.

             NOW THEREFORE, in consideration of the mutual covenants and promises contained herein, the parties hereto agree as follows:

1.          Site License
Agreement.  Upon request by Licensee, if Licensee wishes to build a
coal to liquid plant at any domestic or international location (subject to
applicable laws binding on either party, the Rentech Technology or the proposed
site) and license Rentech’s technology for use at such plant (a
“Licensed Plant”), Rentech agrees to enter into a separate Site
License Agreement with Licensee for such site, with license fees consistent with
this Agreement, and with other terms and conditions substantially similar to
those in the Original Site License Agreement, subject only to variations
required by local law, coal specifications, deadline dates and/or other varying
circumstances mutually agreed to by the parties (it being understood that in the
event of failure to agree, any new Site License Agreement shall reflect only
variations required by local law, deadline dates and/or coal
specifications).  

In connection with any Site License Agreement, Rentech and Licensee shall enter into a Catalyst Purchase Agreement, a Technical Services Agreement, and such other agreements as the parties may agree upon, in substantially the form of, and as defined by and contemplated in the Original Site License Agreement.  Site License Agreements may be entered into by Licensee or any entities Controlled by Licensee.  For purposes of this Agreement, “Control” and its derivatives means the ability to control the management of any entity through the ownership of more than 50% of the voting interests in such entity.  

2.          Capacity.  Site License Agreements issued under this Agreement will be limited to an aggregate capacity of 500,000 barrels of  daily installed capacity for all Site License Agreements, including the Original Site License Agreement, regardless of whether they comprise licenses for new facilities or existing plant expansions.  

3.          Exclusivity.  During the term of any Site License Agreement, including the Original Site License Agreement, DKRW, on behalf of itself and any entities Controlled by DKRW, agrees to license and exclusively use the Rentech Technology, as defined in the Original Site License Agreement, for all of its and their requirements for any plant which converts Synthesis Gas Precursors into Intermediate Hydrocarbon Products, until this Agreement is terminated, in which case Rentech shall have no further obligation to provide Licensee access to the Rentech Technology.  

4.          License Fees and Payment.  Each Site License Agreement shall be subject to the license fees identified in Exhibit A of this Agreement.  

5.          Termination. 
This Agreement may be terminated unilaterally at any time by Licensee on
sixty (60) days written notice, or by mutual agreement of the parties, provided,
however, that in the event of termination by Licensee pursuant to this
paragraph, the terms of Section 3 will survive for so long as any Site License
Agreement remains in effect.  

6.          Miscellaneous. 

	
  
             6.1          Assignment.
  
	
  
 
  	
  
 
  	
  
 
  
	
   
  	
  
             a.          Any   assignment of this Agreement shall be subject to the prior written consent of   the other party, not to be unreasonably withheld or delayed; provided,   however: consent will not be required for an assignment to a successor by   merger or to the acquirer of all or substantially all of the assets or stock   (or other equity) of a party, provided in each case the assignee is not a   Competitor of the other party.
  
	
  
 
  	
  
 
  
	
  
 
  	
  
             b.          The   assigning party shall continue to be liable for all duties, obligations and   liabilities under this Agreement to the extent not performed by the assignee;   and any direct or indirect assignee of this Agreement shall at the request of   the non-assigning party affirm in writing that this Agreement is in full   force and effect and binding on the assignee as written.
  
	
  
 
  	
  
 
  
	
  
 
  	
  
             c.          Rentech   in no case shall assign this Agreement to an entity to which all of Rentech’s   right, title and interest in and to the Rentech Technology has not also been   concurrently assigned, and neither party shall assign this Agreement to a   Competitor of the other party.
  

	
  
             6.2          Collateral   Assignment By Licensee; Other Matters.    
  
	
  
 
  	
  
 
  	
  
 
  
	
  
 
  	
  
             a.          Licensee   may pledge its rights under this Agreement as collateral in connection with   any financing of the Licensed Plant, and Rentech hereby agrees to enter into   customary direct agreement with the financing parties.    
  
	
  
 
  	
  
 
  
	
  
 
  	
  
             b.          This   Agreement does not include the right, by implication, estoppel or otherwise,   to sublicense the Rentech Technology    applications to a third party.     
  
	
   
  	
  
 
  	
  
 
  
	
  
             6.3          Third   Parties.  The   parties intend to confer no benefit or right on any person not a party to   this Agreement.  No third party shall   have the right to claim the benefit of any provision hereof as a third party   beneficiary of any such provision.
  
	
  
 
  	
  
 
  	
  
 
  
	
  
             6.4          No   Other Relationship.    Nothing in this Agreement shall be deemed to create an agency, joint   venture, partnership, franchise or similar relationship between the parties   hereto.  Each party shall conduct all   business in its own name as an independent contractor.  Neither party shall be liable for the   representations, acts, or omission of the other party contrary to the terms   of this Agreement.  Neither party has   the right or power to act for or on behalf of the other or to bind the other   in any respect whatsoever, other than as expressly provided for herein.
  
	
  
 
  	
  
 
  	
  
 
  
	
  
             6.5          Dollar   Transaction.    All payments shall be made in U.S. Dollars, and payment obligations   shall not be discharged by an amount paid in another currency, whether   pursuant to a judgment or otherwise.
  
	
   
  	
  
 
  	
  
 
  
	
  
             6.6          Finder’s   Fees.    Rentech and Licensee represent that there are no broker’s commissions,   finder’s fees or other like amounts payable with regard to this transaction   for which the other party is responsible.    Rentech and Licensee agree to indemnify and hold the other harmless   from and against all liability, claims, damages and costs of any kind arising   from or connected with any broker’s commissions or finder’s fee or charge   claimed to be due any person arising from the indemnitor’s conduct with   respect to this Agreement.
  
	
  
 
  	
  
 
  	
  
 
  
	
  
             6.7          Costs.  Each party shall bear its own costs and   expenses related to the preparation and negotiation of this Agreement.
  
	
  
 
  	
  
 
  	
  
 
  
	
  

             6.8          Equipment. 
In the event the parties agree that Licensee will purchase or lease
equipment from Rentech in connection with any Site License Agreement, the
parties will enter into appropriate documentation setting forth the appropriate
price, intellectual property licenses and protections, warranties,
indemnifications and other terms as agreed.
 

	
  
             6.9          Rights,   Powers, Remedies Cumulative; Waiver; Time.  Each and every right, power and remedy   specified in this Agreement shall be cumulative and in addition to every   other right, power and remedy existing now or hereafter at law, in equity, or   by statute.  Each and every right,   power and remedy may be exercised from time to time and as often and in such   order as may be deemed expedient by a party.    The exercise or the beginning of the exercise of any right, power or   remedy shall not be construed to be a waiver of the right to exercise at the   same time or thereafter any other right, power or remedy.  It is expressly understood and agreed that   time is of the essence of this Agreement, and that no delay or omission by a   party in the exercise of any right or power, or in the pursuit
of any remedy,   shall impair any right, power or remedy, or be construed to be a waiver   thereof, nor shall the acceptance by a party of any payment required under   this Agreement be deemed a waiver of any right, power or remedy in the   future.
  
	
  
 
  
	
  
             6.10        Notices.  Any notice, payment, request, demand or   other communication hereunder shall be in writing and, except as provided for   service of process in this Agreement, shall be deemed to have been duly given   when  (i) delivered personally to the   party to be notified; or (ii) when sent if sent by facsimile transmission   with confirmation that the facsimile message was received by the facsimile machine   of the party to be notified, (iii) one business day after sending if sent by   a nationally recognized overnight carrier; (iv) three business days after   sent by ordinary mail, postage paid, to the party to be notified,  or (v) five business days after sent by   registered or certified mail, postage paid, to the party to be notified, at   the address set forth below.  Either   Rentech or Licensee may
change its address, facsimile number or   representative upon written notice to the other party.  A letter duplicating a facsimile   transmission previously marked as received by the facsimile machine of the   other party shall not extend the time by which the notice was given.
  

	
  
Rentech:  
  	
  
 
  	
  
Licensee:  
  
	
  
 
  	
  
 
  	
  
 
  
	

Chief Executive Officer 

  1331 17th Street, Suite 720

  Denver, Colorado 80202-1557

  Facsimile:  (303) 298-8010
  	
   

  	

DKRW Advanced Fuels LLC

  2 Riverway, Suite 1760

  Houston, Texas  77056

  Attn:  Bob Kelly

  Facsimile:  713-355-3201
  
	
  
 
  	
  
 
  	
  
 
  
	
  
With copy   to:  
  	
  
 
  	
  
DKRW:  
  
	
  
 
  	
  
 
  	
  
 
  
	
  General   Counsel
   1331 17th Street, Suite 720
   Denver, Colorado 80202-1557
   Facsimile:  (303) 298-8010
  	
  
 
  	
  
DKRW Energy   LLC
   2 Riverway, Suite 1760
   Houston, Texas  77056
   Attn:  Bob Kelly
   Facsimile:  713-355-3201
  

             6.11        Governing Law.  The provisions of this Agreement and all rights and obligations hereunder shall be governed in all respects by the law of the state of New York, USA, without regard to principles of conflicts of laws.  

             6.12        Table of Contents and Headings.  Any table of contents accompanying this Agreement and any headings contained herein are for convenience of reference only, do not constitute a part of this Agreement, and shall not be employed in interpreting this Agreement. 

             6.13        Integration.  This Agreement represents the entire agreement of the parties with respect to the subject matter described in it and supersedes all prior correspondence, conversations, negotiations and understandings with respect to those subjects, except as to agreements for confidentiality or other written agreements referred to in this Agreement. 

             6.14        Construction.  This Agreement has been prepared, examined, negotiated and revised by each party and their respective attorneys, and no implication shall be drawn and no provision shall be construed against any party to this Agreement by virtue of the purported identity of the drafter of this Agreement, or any portion of it. 

             6.15        Invalidity
of Provision.  If any of the provision of this agreement shall be held
by an arbitrator or a court or administrative agency of competent jurisdiction
to contravene the laws of any country, it is agreed that such invalidity or
illegality should not invalidate the whole Agreement, but this Agreement shall
be construed as if it did not contain the provision or provisions held to be
invalid or illegal in the particular jurisdiction concerned, and insofar as the
construction does not affect the substance of this Agreement and the rights and
obligations of the parties to it, it shall be construed and enforced
accordingly.  In the event, however, that the invalidity or illegality
substantially alters the relationship between the parties and adversely affects
the interest of either party, the parties shall negotiate a mutually acceptable
alternative provision not conflicting with such laws. 

             6.16        Further Assurances.  Each party shall execute and deliver all further documents and instruments and take all such further actions as may be reasonably required or appropriate to carry out the intent and purposes of this Agreement. 

             6.17        Counterparts.  This Agreement may be executed in several counterparts, and all copies so executed shall constitute but one and the same agreement, which shall be binding on all the parties hereto notwithstanding that less than all of the parties may have signed the original or the same counterpart. 

IN WITNESS WHEREOF, the parties have executed duplicate originals of this Agreement by their duly authorized representatives or officers as of the date given in the introductory paragraph. 

	
  RENTECH,   INC.
  	
  
 
  	
  
DKRW   Advanced Fuels LLC
  
	
  
 
  	
  
 
  	
  
 
  	
  
 
  	
  
 
  
	
  
 
  	
  
/s/ Claude C. Corkadel III
  	
  
 
  	
  
 
  	
  
/s/ Jon C. Doyle 
  
	
  
 
  	
  

  	
  
 
  	
  
 
  	
  

  
	
  
Name:  
  	
  
Claude C.   Corkadel III
  	
  
 
  	
  
Name:
  	
  
Jon C. Doyle 
  
	
  Title:  
  	
  
Vice-President,   Strategic Programs
  	
  
 
  	
  
Title:
  	
  
Executive Officer
  
	
  
 
  	
  
 
  	
  
 
  	
  
 
  	
  
 
  
	
  
 
  	
  
 
  	
  
 
  	
  
 
  	
  
 
  
	
  
 
  	
  
 
  	
  
 
  	
  
DKRW Energy   LLC
  
	
  
 
  	
  
 
  	
  
 
  	
  
 
  	
  
 
  
	
  
 
  	
  
 
  	
  
 
  	
  
 
  	
  
/s/ Jon C. Doyle 
  
	
   
  	
  
 
  	
  
 
  	
  
 
  	
  

  
	
  
 
  	
  
 
  	
  
 
  	
  
Name:
  	
  
Jon C. Doyle 
  
	
  
 
  	
  
 
  	
  
 
  	
  
Title:
  	
  
Executive Officer
  

EXHIBIT A - SCHEDULE OF FEES

1.          New Project License Fees. 

             1.1     Amount.  Licensee will pay an initial license fee based on [*] as of the Financial Close for that facility.  The license fee will be calculated at the rate of $[*], subject to any adjustments referenced in Section 3 of this Exhibit.  

             1.2     Timing.  The initial license fee shall be payable according to the following schedule:

	
  
Event
  	
  
 
  	
  
Percent of Initial
   License Fee Due
  
	
  

  	
  
 
  	
  

  
	
  
At the time   of Financial Close
  	
  
 
  	
  
[*]%
  
	
  
 
  	
  
 
  	
  
 
   
	
  
Delivery to   Licensee of the first Fischer-Tropsch (“FT”) reactor module for the   applicable Licensed Plant (if such module is built off site) or the delivery   to Licensee of the external wall parts for the first FT reactor module for   the applicable Licensed Plant (if such module is to be built on site)
  	
  
 
  	
  
[*]%
  
	
  
 
  	
  
 
  	
  
 
   
	
  
Mechanical   Completion of the Licensed Plant
  	
  
 
  	
  
[*]%
  
	
  
 
  	
  
 
  	
  
 
   
	
  90 days   following Commercial Operation of the Licensed Plant at full capacity
  	
  
 
  	
  
[*]%
  

2.          Subsequent License Fees.

             2.1     Increases in Existing Capacity.  As of Commercial Operation of any Licensed Plant, if during any semi-annual period ending on June 30 or December 31 of any calendar year, the actual production, as defined by averaging the [*] ([*]) consecutive days during that period with the greatest daily production, increases by more than [*] percent ([*]%) above the then current capacity licensed and for which license fees have been paid, Licensee will (a) be subject to additional license fees to cover this increased capacity, and (b) concurrent with the semi-annual report to be provided pursuant to the new Site License Agreement, notify Rentech of this capacity increase. Rentech will provide an invoice to Licensee covering the incremental license fees due, as calculated using the license fee referenced in Section 1.1 of this Exhibit, and subject to any
adjustments referenced in Section 3 of this Exhibit. 

             2.2     Design Increase in Production Capacity (Expansion).  If the Licensee approves the expansion of the production capacity through the addition of new Fischer Tropsch reactors in the Licensed Plant beyond the then current amount licensed, Licensee shall notify Rentech of such event within thirty (30) days of approval. At that time, Licensee shall include with such notification the estimated dates for similar events as listed in the table in Section 1.2 of this Exhibit corresponding with the approved expansion. Rentech shall provide an accounting of the total incremental license fees due, as calculated using the license fee referenced in Section 1.1 of this Exhibit, and subject to any adjustments referenced in Section 3 of this Exhibit. Payment of additional license fees will be invoiced and paid consistent with the terms of this Agreement and
using a schedule similar to that cited in Section 1.2 of this Exhibit for the initial license fees paid.

3.          License Fee Adjustments.  All license fees set forth in this Exhibit will be adjusted in accordance with this Section 3 as of the date that they become due, based on the change in the All Commodities Producer Price Index published by the U.S. Department of Labor, Bureau of Labor Statistics (the “PPI”) for the most current month available as of the date the licensee fees are due, versus the PPI as of the Effective Date of the Original Site License Agreement.  The following formula shall apply:  

A = B x [C / D], where:

             3.1     A = the new license fee;

             3.2     B = the fee stated in this Exhibit;

             3.3     C = the PPI for the most current month available as of the date of notice for the additional capacity; and

             3.4     D = the PPI as of Effective Date of the Original Site License Agreement.

4.          Definitions.  For purposes of this Exhibit, the following definitions will apply:

             4.1     “Commercial Operation” shall mean that the Licensed Plant has completed the performance tests and reliability tests required to be passed by the Licensed Plant’s contractor to prove commercial acceptance, as set forth in the engineering, procurement and construction contract relating thereto.

             4.2     “Financial Close” shall mean the date on which Licensee has received a full funding commitment for developing and building the Licensed Plant, including with necessary debt and equity funding entities.

             4.3     “Liquid Hydrocarbon Products” shall mean various liquid hydrocarbons, including synthetic diesel fuel, jet fuel, naphtha, wax, and other high value fuels and chemicals.

             4.4     “Mechanical Completion” shall mean that the Licensed Plant has achieved mechanical completion pursuant to the engineering, procurement and construction contract relating thereto.

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