Exhibit 10.51







AMENDED AND RESTATED

ENGINEERING,
PROCUREMENT AND CONSTRUCTION AGREEMENT



between

RED RIVER ENVIRONMENTAL PRODUCTS, LLC

Owner

and

BE&K CONSTRUCTION COMPANY, LLC

Contractor









|* | indicates portions of the exhibit that have been omitted pursuant to a request for confidential information. The non-public information has been filed with the Commission.
|- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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TABLE OF CONTENTS



|                                      |  |                                                   |  |                                                          |  |                                              |  |   
|------------------------------------- |  | ------------------------------------------------- |  | -------------------------------------------------------- |  | -------------------------------------------- |  | --
|                                      |  |                                                   |  | Page                                                    
|ARTICLE 1 DEFINITIONS; INTERPRETATION |  | 13                                               
|                                      |  |                                                   | 
|                                      |  | 1.1                                               |  | Definitions                                              |  | 13                                          
|                                      |  |                                                   | 
|                                      |  | 1.2                                               |  | Certain Interpretative Matters                           |  | 30                                          
|                                      |  |                                                   | 
|                                      |  | 1.3                                               |  | Order of Precedence                                      |  | 32                                          
|                                      |  |                                                   |  |                                                         
|                                      |  |                                                   |  | 1.3.1                                                    |  | Notice                                       |  | 32
|                                      |  |                                                   |  | 1.3.2                                                    |  | Conflict                                     |  | 32
|                                      |  |                                                  
|                                      |  | ARTICLE 2 CONTRACTORS WORK AND OTHER OBLIGATIONS |  | 33                                                      
|                                      |  |                                                   | 
|                                      |  | 2.1                                               |  | Commencement of the Work                                 |  | 33                                          
|                                      |  |                                                   |  |                                                         
|                                      |  |                                                   |  | 2.1.1                                                    |  | Effective Date                               |  | 33
|                                      |  |                                                   |  | 2.1.2                                                    |  | Full Notice to Proceed                       |  | 33
|                                      |  |                                                   |  | 2.1.3                                                    |  | Notice to Proceed Requirements               |  | 33
|                                      |  |                                                   |  | 2.1.4                                                    |  | Additional Security                          |  | 34
|                                      |  |                                                   | 
|                                      |  | 2.2                                               |  | Work to be Performed                                     |  | 35                                          
|                                      |  |                                                   |  |                                                         
|                                      |  |                                                   |  | 2.2.1                                                    |  | Engineering/Design, and Procurement Services |  | 35
|                                      |  |                                                   |  | 2.2.2                                                    |  | Supervision and Superintendence              |  | 36
|                                      |  |                                                   |  | 2.2.3                                                    |  | Project Superintendent                       |  | 37
|                                      |  |                                                   |  | 2.2.4                                                    |  | Certain Project Site Related Work            |  | 37
|                                      |  |                                                   |  | 2.2.5                                                    |  | Reference Points                             |  | 38
|                                      |  |                                                   |  | 2.2.6                                                    |  | Procurement of Materials, Equipment          |  | 38
|                                      |  |                                                   |  | 2.2.7                                                    |  | Inspection, Factory Tests and Expediting     |  | 39
|                                      |  |                                                   |  | 2.2.8                                                    |  | Labor and Personnel                          |  | 40
|                                      |  |                                                   |  | 2.2.9                                                    |  | Certain Taxes                                |  | 41
|                                      |  |                                                   |  | 2.2.10                                                   |  | Permitting                                   |  | 43
|                                      |  |                                                   |  | 2.2.11                                                   |  | Personnel Training                           |  | 43
|                                      |  |                                                   |  | 2.2.12                                                   |  | Safety Precautions                           |  | 44
|                                      |  |                                                   |  | 2.2.13                                                   |  | Hazardous Substances                         |  | 45
|                                      |  |                                                   |  | 2.2.14                                                   |  | Royalties, Import Duties and License Fees    |  | 47
|                                      |  |                                                   |  | 2.2.15                                                   |  | Interconnection Agreement                    |  | 48
|                                      |  |                                                   |  | 2.2.16                                                   |  | [RESERVED]                                   |  | 48
|                                      |  |                                                   |  | 2.2.17                                                   |  | Storage and Related Matters                  |  | 48
|                                      |  |                                                   |  | 2.2.18                                                   |  | Functional Tests                             |  | 48
|                                      |  |                                                   |  | 2.2.19                                                   |  | Clean Site and Waste Removal                 |  | 48
|                                      |  |                                                   |  | 2.2.20                                                   |  | Owner Contracts                              |  | 49
|                                      |  |                                                   | 
|                                      |  | 2.3                                               |  | Project Schedule, Progress Reports and Progress Meetings |  | 50                                          
|                                      |  |                                                   |  |                                                         
|                                      |  |                                                   |  | 2.3.1                                                    |  | Project Schedule                             |  | 50
|                                      |  |                                                   |  | 2.3.2                                                    |  | Recovery Plan                                |  | 51



---

|     |  |                                                  |  |                                                       |  |   
|---- |  | ------------------------------------------------ |  | ----------------------------------------------------- |  | --
|2.4  |  | Methods of Performance                           |  | 52                                                   
|     |  |                                                 
|2.5  |  | Transfer of Title/Risk of Loss for Certain Items |  | 52                                                   
|     |  |                                                  | 
|     |  | 2.5.1                                            |  | Title to Work                                         |  | 52
|     |  | 2.5.2                                            |  | Risk of Loss to Contractor Property                   |  | 52
|     |  | 2.5.3                                            |  | Title to Drawings, Reports, Documents and Information |  | 52
|     |  | 2.5.4                                            |  | Title to Natural Resources                            |  | 54
|     |  | 2.5.5                                            |  | Title to Fossils and Artifacts                        |  | 54
|     |  | 2.5.6                                            |  | Title Warranty                                        |  | 54
|     |  |                                                 
|2.6  |  | Subsurface Conditions                            |  | 54                                                   
|     |  |                                                 
|2.7  |  | Local Conditions                                 |  | 55                                                   
|     |  |                                                 
|2.8  |  | Subcontractors and Owner Suppliers               |  | 55                                                   
|     |  |                                                  | 
|     |  | 2.8.1                                            |  | Subcontractors                                        |  | 55
|     |  | 2.8.2                                            |  | No Privity with Owner                                 |  | 55
|     |  | 2.8.3                                            |  | Certain Subcontracts                                  |  | 55
|     |  | 2.8.4                                            |  | Purchase Orders and Subcontracts                      |  | 56
|     |  | 2.8.5                                            |  | Subcontractor Warranties                              |  | 56
|     |  | 2.8.6                                            |  | Subcontractor Insurance                               |  | 57
|     |  |                                                 
|2.9  |  | Insurance                                        |  | 57                                                   
|     |  |                                                 
|2.10 |  | Compliance with Applicable Legal Requirements    |  | 57                                                   
|     |  |                                                 
|2.11 |  | Real Estate                                      |  | 57                                                   
|     |  |                                                 
|2.12 |  | Use of Project Site                              |  | 57                                                   
|     |  |                                                  | 
|     |  | 2.12.1                                           |  | Use and Restoration                                   |  | 58
|     |  | 2.12.2                                           |  | Site Authority                                        |  | 58
|     |  |                                                 
|2.13 |  | Record Documents                                 |  | 58                                                   
|     |  |                                                 
|2.14 |  | Submittals                                       |  | 58                                                   
|     |  |                                                  | 
|     |  | 2.14.1                                           |  | Review                                                |  | 59
|     |  | 2.14.2                                           |  | Variations                                            |  | 59
|     |  | 2.14.3                                           |  | Due Consideration                                     |  | 59
|     |  | 2.14.4                                           |  | Applicable Electronic Format                          |  | 59
|     |  |                                                 
|2.15 |  | Separate Contractors and Activities By Owner     |  | 59                                                   
|     |  |                                                  | 
|     |  | 2.15.1                                           |  | Separate Work                                         |  | 59
|     |  | 2.15.2                                           |  | Integration                                           |  | 59
|     |  | 2.15.3                                           |  | Coordination                                          |  | 60
|     |  | 2.15.4                                           |  | Owner Contractor Storage and Laydown                  |  | 60
|     |  |                                                 
|2.16 |  | Transportation Costs                             |  | 60                                                   
|     |  |                                                 
|2.17 |  | Labor Matters                                    |  | 60                                                   



---

|                                                             |  |                                               |  |                                                                 |  |   
|------------------------------------------------------------ |  | --------------------------------------------- |  | --------------------------------------------------------------- |  | --
|2.18                                                         |  | Discipline and Protection                     |  | 61                                                             
|                                                             |  |                                              
|2.19                                                         |  | Security                                      |  | 61                                                             
|                                                             |  |                                              
|2.20                                                         |  | Project Site Fire Protection                  |  | 61                                                             
|                                                             |  |                                              
|2.21                                                         |  | Coordination and Transition                   |  | 61                                                             
|                                                             |  |                                               | 
|                                                             |  | 2.21.1                                        |  | Phase I Portion of the Project                                  |  | 61
|                                                             |  | 2.21.2                                        |  | Balance of the Project                                          |  | 62
|                                                             |  |                                              
|2.22                                                         |  | Surplus Equipment and Materials               |  | 62                                                             
|                                                             | 
|ARTICLE 3 OWNERS OBLIGATIONS                                |  | 63                                           
|                                                             |  |                                              
|3.1                                                          |  | Project Site                                  |  | 63                                                             
|                                                             |  |                                              
|3.2                                                          |  | Permits                                       |  | 63                                                             
|                                                             |  |                                              
|3.3                                                          |  | Owner Insurance                               |  | 63                                                             
|                                                             |  |                                              
|3.4                                                          |  | Owner Taxes                                   |  | 63                                                             
|                                                             |  |                                               | 
|                                                             |  | 3.4.1                                         |  | Payment of Taxes                                                |  | 63
|                                                             |  | 3.4.2                                         |  | Sales Taxes                                                     |  | 64
|                                                             |  |                                              
|3.5                                                          |  | Start-up Personnel                            |  | 64                                                             
|                                                             |  |                                              
|3.6                                                          |  | Owner Site Manager and Owner Engineer         |  | 64                                                             
|                                                             |  |                                              
|3.7                                                          |  | Interconnection                               |  | 65                                                             
|                                                             |  |                                               | 
|                                                             |  | 3.7.1                                         |  | Out of Scope Interconnection Facilities and Utility Connections |  | 65
|                                                             |  | 3.7.2                                         |  | Transmission Facilities                                         |  | 65
|                                                             |  |                                              
|3.8                                                          |  | Startup Period                                |  | 66                                                             
|                                                             |  |                                               | 
|                                                             |  | 3.8.1                                         |  | Startup Period; Pre-Commercial Energy                           |  | 66
|                                                             |  | 3.8.2                                         |  | Waste                                                           |  | 66
|                                                             |  | 3.8.3                                         |  | Initial Fills                                                   |  | 66
|                                                             |  |                                              
|3.9                                                          |  | Hazardous Substances                          |  | 66                                                             
|                                                             |  |                                              
|3.10                                                         |  | Compliance with Contractors Rules            |  | 67                                                             
|                                                             |  |                                              
|3.11                                                         |  | Performance of Owner Obligations              |  | 67                                                             
|                                                             |  |                                              
|3.12                                                         |  | Compliance with Applicable Legal Requirements |  | 67                                                             
|                                                             |  |                                              
|3.13                                                         |  | Owner Suppliers                               |  | 67                                                             
|                                                             |  |                                               | 
|                                                             |  | 3.13.1                                        |  | Contract Execution                                              |  | 67
|                                                             |  |                                              
|3.14                                                         |  | Discipline and Protection                     |  | 68                                                             
|                                                             | 
|ARTICLE 4 OWNERS RIGHT TO INSPECT, STOP AND RE-PERFORM WORK |  | 69                                           
|                                                             |  |                                              
|4.1                                                          |  | Inspection                                    |  | 69                                                             
|                                                             |  |                                              
|4.2                                                          |  | Right to Reject and Re-Performance            |  | 69                                                             



---

|                                                |  |                                        |  |                                                                       |  |   
|----------------------------------------------- |  | -------------------------------------- |  | --------------------------------------------------------------------- |  | --
|4.3                                             |  | Defects in Owner Suppliers Scope      |  | 69                                                                   
|                                                |  |                                       
|4.4                                             |  | Right to Suspend Work for Convenience. |  | 70                                                                   
|                                                |  |                                       
|4.5                                             |  | Uncovering Work                        |  | 70                                                                   
|                                                |  |                                       
|4.6                                             |  | Right to Stop Work for Cause           |  | 71                                                                   
|                                                | 
|ARTICLE 5 CONSTRUCTION PRICE AND PAYMENT        |  | 72                                    
|                                                |  |                                       
|5.1                                             |  | Construction Price                     |  | 72                                                                   
|                                                |  |                                        | 
|                                                |  | 5.1.1                                  |  | Fixed Component                                                       |  | 72
|                                                |  | 5.1.2                                  |  | Reimbursable Component                                                |  | 72
|                                                |  | 5.1.3                                  |  | Payment of Fixed Component                                            |  | 73
|                                                |  | 5.1.4                                  |  | Payment of the Reimbursable Component                                 |  | 73
|                                                |  | 5.1.5                                  |  | Price and Other Agreement Adjustments due to Change Orders            |  | 73
|                                                |  | 5.1.6                                  |  | Reconciliation of Actual Craft Labor Hours to Craft Labor Hour Target |  | 76
|                                                |  | 5.1.7                                  |  | [RESERVED]                                                            |  | 77
|                                                |  | 5.1.8                                  |  | Applications for Payment                                              |  | 77
|                                                |  | 5.1.9                                  |  | Progress Reports                                                      |  | 78
|                                                |  | 5.1.10                                 |  | Lien Waivers                                                          |  | 78
|                                                |  | 5.1.11                                 |  | Other Documentation                                                   |  | 79
|                                                |  | 5.1.12                                 |  | Failure to Comply                                                     |  | 79
|                                                |  | 5.1.13                                 |  | Retainage                                                             |  | 79
|                                                |  | 5.1.14                                 |  | Construction Price Inclusive                                          |  | 80
|                                                |  | 5.1.15                                 |  | Contingency Sharing Payment                                           |  | 80
|                                                |  |                                       
|5.2                                             |  | Owner Supplier Payments                |  | 81                                                                   
|                                                |  |                                       
|5.3                                             |  | Owner Review                           |  | 81                                                                   
|                                                |  |                                       
|5.4                                             |  | Payment Due Dates                      |  | 81                                                                   
|                                                |  |                                       
|5.5                                             |  | Final Payment                          |  | 82                                                                   
|                                                |  |                                       
|5.6                                             |  | Withholding to Protect Owner from Loss |  | 82                                                                   
|                                                |  |                                        | 
|                                                |  | 5.6.1                                  |  | Withholding                                                           |  | 82
|                                                |  | 5.6.2                                  |  | Lien Title Indemnity                                                  |  | 82
|                                                |  |                                       
|5.7                                             |  | Delinquent Payments                    |  | 82                                                                   
|                                                |  |                                       
|5.8                                             |  | Contractor Liens                       |  | 83                                                                   
|                                                |  |                                       
|5.9                                             |  | Forecasts                              |  | 83                                                                   
|                                                |  |                                       
|5.10                                            |  | Total Work Cost Bonus Amount           |  | 83                                                                   
|                                                | 
|ARTICLE 6 COMPLETION AND ACCEPTANCE OF THE WORK |  | 84                                    
|                                                |  |                                       
|6.1                                             |  | Phase I Mechanical Completion          |  | 84                                                                   
|                                                |  |                                        | 
|                                                |  | 6.1.1                                  |  | Criteria for Phase I Mechanical Completion                            |  | 84



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|                              |  |                                                                                   |  |                                                                                              |  |    
|----------------------------- |  | --------------------------------------------------------------------------------- |  | -------------------------------------------------------------------------------------------- |  | ---
|                              |  | 6.1.2                                                                             |  | Notice and Report of Phase I Mechanical Completion                                           |  | 85 
|                              |  | 6.1.3                                                                             |  | Achievement of Phase I Mechanical Completion                                                 |  | 86 
|                              |  |                                                                                  
|6.2                           |  | Mechanical Completion                                                             |  | 86                                                                                          
|                              |  |                                                                                   | 
|                              |  | 6.2.1                                                                             |  | Criteria for Mechanical Completion                                                           |  | 86 
|                              |  | 6.2.2                                                                             |  | Notice and Report of Mechanical Completion                                                   |  | 88 
|                              |  | 6.2.3                                                                             |  | Achievement of Mechanical Completion                                                         |  | 88 
|                              |  |                                                                                  
|6.3                           |  | Initial Synchronization                                                           |  | 89                                                                                          
|                              |  |                                                                                  
|6.4                           |  | Phase I Substantial Completion                                                    |  | 89                                                                                          
|                              |  |                                                                                   | 
|                              |  | 6.4.1                                                                             |  | Criteria for Phase I Substantial Completion                                                  |  | 89 
|                              |  | 6.4.2                                                                             |  | Notice and Report of Phase I Substantial Completion                                          |  | 90 
|                              |  | 6.4.3                                                                             |  | Achievement of Phase I Substantial Completion                                                |  | 91 
|                              |  | 6.4.4                                                                             |  | Care, Custody and Control During Dispute Resolution Regarding Phase I Substantial Completion |  | 91 
|                              |  |                                                                                  
|6.5                           |  | Creation of Phase I Punch List                                                    |  | 92                                                                                          
|                              |  |                                                                                  
|6.6                           |  | Transfer of Possession and Control of the Phase I Portion of the Project to Owner |  | 93                                                                                          
|                              |  |                                                                                  
|6.7                           |  | Substantial Completion                                                            |  | 93                                                                                          
|                              |  |                                                                                   | 
|                              |  | 6.7.1                                                                             |  | Preliminary Repairs, Replacements and Refurbishments                                         |  | 93 
|                              |  | 6.7.2                                                                             |  | Substantial Completion                                                                       |  | 94 
|                              |  | 6.7.3                                                                             |  | Notice and Report of Substantial Completion                                                  |  | 95 
|                              |  | 6.7.4                                                                             |  | Achievement of Substantial Completion                                                        |  | 96 
|                              |  | 6.7.5                                                                             |  | Care, Custody and Control During Dispute Resolution Regarding Substantial Completion         |  | 96 
|                              |  | 6.7.6                                                                             |  | Project Punch List                                                                           |  | 97 
|                              |  | 6.7.7                                                                             |  | Possession and Control                                                                       |  | 98 
|                              |  | 6.7.8                                                                             |  | Reliability Test.                                                                            |  | 98 
|                              |  |                                                                                  
|6.8                           |  | Final Completion                                                                  |  | 100                                                                                         
|                              |  |                                                                                   | 
|                              |  | 6.8.1                                                                             |  | Criteria for Final Completion of the Project                                                 |  | 100
|                              |  | 6.8.2                                                                             |  | Notice and Report of Final Completion                                                        |  | 100
|                              |  | 6.8.3                                                                             |  | Achievement of Final Completion                                                              |  | 101
|                              |  | 6.8.4                                                                             |  | Target Final Completion Date                                                                 |  | 101
|                              | 
|ARTICLE 7 PERFORMANCE TESTING |  | 102                                                                              
|                              |  |                                                                                  
|7.1                           |  | Performance Tests                                                                 |  | 102                                                                                         
|                              |  |                                                                                  
|7.2                           |  | Notice to Owner                                                                   |  | 102                                                                                         
|                              |  |                                                                                   | 
|                              |  | 7.2.1                                                                             |  | Phase I Notice                                                                               |  | 102
|                              |  | 7.2.2                                                                             |  | Notice                                                                                       |  | 102
|                              |  |                                                                                  
|7.3                           |  | Completed Performance Tests                                                       |  | 102                                                                                         



---

|                                                                                |  |                                                      |  |                                                                                                |  |    
|------------------------------------------------------------------------------- |  | ---------------------------------------------------- |  | ---------------------------------------------------------------------------------------------- |  | ---
|                                                                                |  | 7.3.1                                                |  | Phase I Performance Tests                                                                      |  | 102
|                                                                                |  | 7.3.2                                                |  | Other Performance Tests                                                                        |  | 103
|                                                                                |  | 7.3.3                                                |  | Individual Test Reports                                                                        |  | 104
|                                                                                |  |                                                     
|7.4                                                                             |  | Repetition of Tests                                  |  | 104                                                                                           
|                                                                                |  |                                                     
|7.5                                                                             |  | Re-Setting of Project                                |  | 104                                                                                           
|                                                                                |  |                                                     
|7.6                                                                             |  | Operation of the Project                             |  | 104                                                                                           
|                                                                                | 
|ARTICLE 8 PERFORMANCE AND COMPLETION REQUIREMENTS, LIQUIDATED DAMAGES AND BONUS |  | 106                                                 
|                                                                                |  |                                                     
|8.1                                                                             |  | Phase I Substantial Completion Requirements          |  | 106                                                                                           
|                                                                                |  |                                                      | 
|                                                                                |  | 8.1.1                                                |  | Phase I Performance Requirements                                                               |  | 106
|                                                                                |  | 8.1.2                                                |  | Phase I Substantial Completion Date                                                            |  | 106
|                                                                                |  |                                                     
|8.2                                                                             |  | Substantial Completion Performance Test Requirements |  | 106                                                                                           
|                                                                                |  |                                                      | 
|                                                                                |  | 8.2.1                                                |  | Performance Requirements                                                                       |  | 107
|                                                                                |  | 8.2.2                                                |  | Target Substantial Completion Date                                                             |  | 108
|                                                                                |  | 8.2.3                                                |  | Target Final Completion Date                                                                   |  | 108
|                                                                                |  |                                                     
|8.3                                                                             |  | Late Substantial Completion Damages                  |  | 108                                                                                           
|                                                                                |  |                                                      | 
|                                                                                |  | 8.3.1                                                |  | Late Phase I Substantial Completion Liquidated Damages                                         |  | 108
|                                                                                |  | 8.3.2                                                |  | Late Substantial Completion Liquidation Damages                                                |  | 109
|                                                                                |  | 8.3.3                                                |  | Overlap of Delay Liquidated Damage Periods.                                                    |  | 110
|                                                                                |  | 8.3.4                                                |  | Payment of Delay Liquidated Damages                                                            |  | 110
|                                                                                |  |                                                     
|8.4                                                                             |  | Buy Down                                             |  | 110                                                                                           
|                                                                                |  |                                                      | 
|                                                                                |  | 8.4.1                                                |  | Cure Period                                                                                    |  | 110
|                                                                                |  | 8.4.2                                                |  | Buy Down Amount                                                                                |  | 110
|                                                                                |  | 8.4.3                                                |  | Reasonableness                                                                                 |  | 112
|                                                                                |  | 8.4.4                                                |  | Payment of Buy Down Amount                                                                     |  | 112
|                                                                                |  | 8.4.5                                                |  | Limitation on Right to Minimum Performance Requirements and/or Minimum Reliability Requirement |  | 112
|                                                                                |  |                                                     
|8.5                                                                             |  | Early Phase I Substantial Completion Bonus           |  | 113                                                                                           
|                                                                                |  |                                                     
|8.6                                                                             |  | Early Substantial Completion Bonus                   |  | 113                                                                                           
|                                                                                | 
|ARTICLE 9 THE WARRANTY PERIODS                                                  |  | 114                                                 
|                                                                                |  |                                                     
|9.1                                                                             |  | General Warranty of Work, Materials and Equipment    |  | 114                                                                                           
|                                                                                |  |                                                     
|9.2                                                                             |  | Owner Supplier Work                                  |  | 114                                                                                           
|                                                                                |  |                                                     
|9.3                                                                             |  | Nonconforming Work                                   |  | 114                                                                                           
|                                                                                |  |                                                     
|9.4                                                                             |  | Contractors Warranty Work                           |  | 115                                                                                           
|                                                                                |  |                                                     
|9.5                                                                             |  | Warranty Periods                                     |  | 115                                                                                           
|                                                                                |  |                                                      | 
|                                                                                |  | 9.5.1                                                |  | Duration                                                                                       |  | 115



---

|                           |  |                                                      |  |                                   |  |    
|-------------------------- |  | ---------------------------------------------------- |  | --------------------------------- |  | ---
|                           |  | 9.5.2                                                |  | Transfer                          |  | 116
|                           |  |                                                     
|9.6                        |  | Subcontractor Warranties                             |  | 116                              
|                           |  |                                                     
|9.7                        |  | Root Cause Repairs                                   |  | 116                              
|                           |  |                                                     
|9.8                        |  | Cure Rights of Owner for Breach of Warranty          |  | 116                              
|                           |  |                                                     
|9.9                        |  | Title to Warranty Work                               |  | 117                              
|                           |  |                                                     
|9.10                       |  | Exclusions                                           |  | 117                              
|                           |  |                                                     
|9.11                       |  | Primary Liability                                    |  | 117                              
|                           |  |                                                     
|9.12                       |  | General Limitations on Warranties and Remedies       |  | 118                              
|                           | 
|ARTICLE 10 CHANGES         |  | 119                                                 
|                           |  |                                                     
|10.1                       |  | Changes                                              |  | 119                              
|                           |  |                                                     
|10.2                       |  | Procedure for Changes                                |  | 119                              
|                           |  |                                                      | 
|                           |  | 10.2.1                                               |  | Changes Initiated by Contractor   |  | 119
|                           |  | 10.2.2                                               |  | Changes Initiated by Owner        |  | 120
|                           |  |                                                     
|10.3                       |  | Change Events                                        |  | 121                              
|                           |  |                                                     
|10.4                       |  | Changes Involving Schedule Extensions                |  | 122                              
|                           |  |                                                     
|10.5                       |  | Changes to the Fixed Component                       |  | 122                              
|                           |  |                                                     
|10.6                       |  | Continued Performance Pending Resolution of Disputes |  | 122                              
|                           |  |                                                     
|10.7                       |  | Options for Implementing Changes                     |  | 122                              
|                           |  |                                                     
|10.8                       |  | Documentation                                        |  | 123                              
|                           | 
|ARTICLE 11 FORCE MAJEURE   |  | 124                                                 
|                           |  |                                                     
|11.1                       |  | Force Majeure Event                                  |  | 124                              
|                           |  |                                                     
|11.2                       |  | Burden of Proof                                      |  | 125                              
|                           |  |                                                      | 
|                           |  | 11.2.1                                               |  | Excused Performance               |  | 125
|                           |  | 11.2.2                                               |  | Scope of Excused Performance      |  | 125
|                           |  | 11.2.3                                               |  | Prior Obligations and Liabilities |  | 125
|                           |  | 11.2.4                                               |  | Continued Performance             |  | 125
|                           |  | 11.2.5                                               |  | No Affect on Payment Obligations  |  | 125
|                           | 
|ARTICLE 12 INDEMNIFICATION |  | 126                                                 
|                           |  |                                                     
|12.1                       |  | Indemnity                                            |  | 126                              
|                           |  |                                                     
|12.2                       |  | Obligations with Respect to Liens                    |  | 126                              
|                           |  |                                                     
|12.3                       |  | Obligations with Respect to Intellectual Property    |  | 127                              
|                           |  |                                                     
|12.4                       |  | Owner Indemnity                                      |  | 127                              
|                           |  |                                                     
|12.5                       |  | Notice and Legal Defense                             |  | 128                              



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|                                          |  |                                                                                                                |  |                                                                                 |  |    
|----------------------------------------- |  | -------------------------------------------------------------------------------------------------------------- |  | ------------------------------------------------------------------------------- |  | ---
|                                          |  |                                                                                                               
|12.6                                      |  | Failure to Defend Action                                                                                       |  | 129                                                                            
|                                          |  |                                                                                                               
|12.7                                      |  | No Limitation to Workers Benefits                                                                             |  | 129                                                                            
|                                          |  |                                                                                                               
|12.8                                      |  | Limitation on Indemnification                                                                                  |  | 129                                                                            
|                                          | 
|ARTICLE 13 REMEDIES AND TERMINATION       |  | 130                                                                                                           
|                                          |  |                                                                                                               
|13.1                                      |  | Termination for Convenience                                                                                    |  | 130                                                                            
|                                          |  |                                                                                                                | 
|                                          |  | 13.1.1                                                                                                         |  | Termination Payment                                                             |  | 130
|                                          |  | 13.1.2                                                                                                         |  | Termination Obligations                                                         |  | 130
|                                          |  | 13.1.3                                                                                                         |  | Termination Due to Force Majeure                                                |  | 131
|                                          |  |                                                                                                               
|13.2                                      |  | Termination Upon Contractor Event of Default                                                                   |  | 131                                                                            
|                                          |  |                                                                                                               
|13.3                                      |  | Termination for Agreed Circumstances                                                                           |  | 132                                                                            
|                                          |  |                                                                                                               
|13.4                                      |  | Consequences of Termination; Actions upon Termination                                                          |  | 133                                                                            
|                                          |  |                                                                                                                | 
|                                          |  | 13.4.1                                                                                                         |  | Assumption and Succession                                                       |  | 133
|                                          |  | 13.4.2                                                                                                         |  | Completion of the Work                                                          |  | 133
|                                          |  | 13.4.3                                                                                                         |  | Actions Upon Termination                                                        |  | 134
|                                          |  |                                                                                                               
|13.5                                      |  | Owner Monetary and Non-Monetary Defaults; Contractor Draw Conditions on Pre-Financial Closing Letter of Credit |  | 134                                                                            
|                                          |  |                                                                                                                | 
|                                          |  | 13.5.1                                                                                                         |  | Non-Payment                                                                     |  | 134
|                                          |  | 13.5.2                                                                                                         |  | Non-Monetary Default                                                            |  | 135
|                                          |  | 13.5.3                                                                                                         |  | Draw Conditions for Pre-Financial Closing Letter of Credit and Letter Agreement |  | 136
|                                          |  |                                                                                                               
|13.6                                      |  | Duty to Mitigate Damages                                                                                       |  | 136                                                                            
|                                          | 
|ARTICLE 14 SECURITY                       |  | 137                                                                                                           
|                                          |  |                                                                                                               
|14.1                                      |  | Guarantees                                                                                                     |  | 137                                                                            
|                                          | 
|ARTICLE 15 REPRESENTATIONS AND WARRANTIES |  | 138                                                                                                           
|                                          |  |                                                                                                               
|15.1                                      |  | Representations and Warranties of Contractor                                                                   |  | 138                                                                            
|                                          |  |                                                                                                               
|15.2                                      |  | Representation and Warranties of Owner                                                                         |  | 139                                                                            
|                                          | 
|ARTICLE 16 LIMITATIONS OF LIABILITY       |  | 140                                                                                                           
|                                          |  |                                                                                                               
|16.1                                      |  | Limitation of Contractors Liability for Liquidated Damages                                                    |  | 140                                                                            
|                                          |  |                                                                                                                | 
|                                          |  | 16.1.1                                                                                                         |  | Aggregate Limitation for Liquidated Damages.                                    |  | 140
|                                          |  | 16.1.2                                                                                                         |  | Aggregate Limitation for Delay Liquidated Damages.                              |  | 140
|                                          |  | 16.1.3                                                                                                         |  | Aggregate Limitation for Performance Liquidated Damages.                        |  | 140
|                                          |  | 16.1.4                                                                                                         |  | Individual Limitations for Performance Liquidated Damages.                      |  | 140
|                                          |  |                                                                                                               
|16.2                                      |  | Consequential Damages                                                                                          |  | 141                                                                            
|                                          |  |                                                                                                               
|16.3                                      |  | Overall Limitation of Liability                                                                                |  | 141                                                                            
|                                          |  |                                                                                                               
|16.4.                                     |  | Application                                                                                                    |  | 142                                                                            



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|                              |  |                                               |  |                                                              |  |    
|----------------------------- |  | --------------------------------------------- |  | ------------------------------------------------------------ |  | ---
|                              | 
|ARTICLE 17 DISPUTE RESOLUTION |  | 143                                          
|                              |  |                                              
|17.1                          |  | Dispute Resolution Between the Parties        |  | 143                                                         
|                              |  |                                               | 
|                              |  | 17.1.1                                        |  | Cooperation                                                  |  | 143
|                              |  | 17.1.2                                        |  | Management Discussions                                       |  | 143
|                              |  | 17.1.3                                        |  | Voluntary Mediation                                          |  | 143
|                              |  |                                              
|17.2                          |  | Arbitration                                   |  | 143                                                         
|                              |  |                                               | 
|                              |  | 17.2.1                                        |  | Rules and Arbitrators                                        |  | 143
|                              |  | 17.2.2                                        |  | Impartiality, Independence and Qualifications of Arbitrators |  | 144
|                              |  | 17.2.3                                        |  | Costs and Discovery                                          |  | 144
|                              |  | 17.2.4                                        |  | Limitations                                                  |  | 145
|                              |  | 17.2.5                                        |  | Additional Relief                                            |  | 145
|                              |  | 17.2.6                                        |  | Venue and Timing                                             |  | 145
|                              |  | 17.2.7                                        |  | Continued Performance                                        |  | 145
|                              |  | 17.2.8                                        |  | Consolidation                                                |  | 145
|                              |  | 17.2.9                                        |  | When Inapplicable                                            |  | 146
|                              |  | 17.2.10                                       |  | Cross Examination                                            |  | 146
|                              |  | 17.2.11                                       |  | Survival                                                     |  | 146
|                              | 
|ARTICLE 18 CONFIDENTIALITY    |  | 147                                          
|                              |  |                                              
|18.1                          |  | Confidential Information                      |  | 147                                                         
|                              |  |                                              
|18.2                          |  | Publicity                                     |  | 148                                                         
|                              |  |                                              
|18.3                          |  | Prior Confidentiality Agreements              |  | 149                                                         
|                              |  |                                              
|18.4                          |  | Injunctive Relief                             |  | 149                                                         
|                              | 
|ARTICLE 19 COST RECORDS       |  | 150                                          
|                              |  |                                              
|19.1                          |  | Records                                       |  | 150                                                         
|                              |  |                                              
|19.2                          |  | Inspection of Books, Records and Audit Rights |  | 150                                                         
|                              | 
|ARTICLE 20 MISCELLANEOUS      |  | 151                                          
|                              |  |                                              
|20.1                          |  | Authorized Representatives                    |  | 151                                                         
|                              |  |                                              
|20.2                          |  | Assignment/Delegation                         |  | 151                                                         
|                              |  |                                               | 
|                              |  | 20.2.1                                        |  | Assignment/Delegation by Contractor                          |  | 151
|                              |  | 20.2.2                                        |  | Assignment/Delegation by Owner                               |  | 151
|                              |  | 20.2.3                                        |  | Successors and Assigns                                       |  | 152
|                              |  |                                              
|20.3                          |  | Reviews, Inspections, Approvals by Owner      |  | 152                                                         
|                              |  |                                              
|20.4                          |  | Governing Law; Choice of Forum                |  | 153                                                         
|                              |  |                                              
|20.5                          |  | Surviving Obligations                         |  | 153                                                         
|                              |  |                                              
|20.6                          |  | Severability                                  |  | 153                                                         
|                              |  |                                              
|20.7                          |  | Notices                                       |  | 153                                                         



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|      |  |                                    |  |    
|----- |  | ---------------------------------- |  | ---
|      |  |                                   
|20.8  |  | Article and Section Headings       |  | 154
|      |  |                                   
|20.9  |  | Duties and Remedies                |  | 155
|      |  |                                   
|20.10 |  | No Waiver of Rights                |  | 155
|      |  |                                   
|20.11 |  | Entire Agreement                   |  | 155
|      |  |                                   
|20.12 |  | Amendments                         |  | 155
|      |  |                                   
|20.13 |  | No Third Party Rights              |  | 155
|      |  |                                   
|20.14 |  | Obligations Non-recourse           |  | 155
|      |  |                                   
|20.15 |  | Relationship of the Parties        |  | 155
|      |  |                                   
|20.16 |  | Counterparts                       |  | 156
|      |  |                                   
|20.17 |  | Cooperation with Financing Efforts |  | 156
|      |  |                                   
|20.18 |  | Financing Engineer                 |  | 157
|      |  |                                   
|20.19 |  | Owner Engineer                     |  | 157
|      |  |                                   
|20.20 |  | Review Committee                   |  | 158

List of Appendices



|            |  |                                                                                    |  |                                                                                                                                                    
|----------- |  | ---------------------------------------------------------------------------------- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------
|Appendix A: |  | Scope of Work                                                                     
|            | 
|Appendix B: |  | Project Schedule                                                                  
|            | 
|Appendix C: |  | Performance Test Requirements and Special Repairs, Replacements and Refurbishments
|            | 
|Appendix D: |  | Owner Permits                                                                     
|            | 
|Appendix E: |  | Owner Contracts                                                                   
|            | 
|Appendix F: |  | Key Personnel                                                                     
|            | 
|Appendix G: |  | Milestone Payment Schedule                                                        
|            | 
|Appendix H: |  | Cost Breakdown                                                                    
|            | 
|Appendix I: |  | Forms                                                                             
|            |  |                                                                                   
|            |  | I -1                                                                               |  | Form of Full Notice to Proceed                                                                                                                     
|            |  | I -2A                                                                              |  | Form of Application for Payment                                                                                                                    
|            |  | I -2B                                                                              |  | [RESERVED]                                                                                                                                         
|            |  | I -3                                                                               |  | Form of Certificate                                                                                                                                
|            |  | I -4                                                                               |  | Form of Notice of Phase I Mechanical Completion, Mechanical Completion, Phase I Substantial Completion, Substantial Completion and Final Completion
|            |  | I -5                                                                               |  | Form of Change Order                                                                                                                               
|            |  | I -6                                                                               |  | Form of Letter of Credit                                                                                                                           
|            |  | I -7                                                                               |  | Form of Owner Guaranty                                                                                                                             



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|            |  |                                                                                         |  |                                   
|----------- |  | --------------------------------------------------------------------------------------- |  | ----------------------------------
|            |  | I -8                                                                                    |  | Form of Contractor Guaranty       
|            |  | I -9                                                                                    |  | Form of Retainage Letter of Credit
|            |  | I -10                                                                                   |  | Form of Opinion                   
|            |  | I -11                                                                                   |  | Lien Waiver Forms                 
|            | 
|Appendix J: |  | Project Site                                                                           
|            | 
|Appendix K: |  | Craft Wage Rates and Craft Labor Cost Estimate; Craft Labor Hour Target;               
|            | 
|Appendix L: |  | Sales Tax Materials                                                                    
|            | 
|Appendix M: |  | Owner Contract Administration                                                          
|            | 
|Appendix N: |  | Reimbursable Component                                                                 
|            | 
|Appendix O: |  | Contractors Consumables List                                                          
|            | 
|Appendix P: |  | Target Total Work Cost                                                                 
|            | 
|Appendix Q: |  | Insurance Requirements                                                                 
|            | 
|Appendix R: |  | Engineering, Procurement, Construction (home office) Engineering Time and Material Cost



---

AMENDED AND RESTATED

ENGINEERING, PROCUREMENT AND CONSTRUCTION AGREEMENT

AMENDED AND RESTATED ENGINEERING, PROCUREMENT
AND CONSTRUCTION AGREEMENT (this Agreement), is entered into as of the 8th day of September, 2008 (the Effective Date), by and between Red River Environmental Products, LLC, a Delaware limited liability company
(Owner), and BE&K Construction Company, LLC, a Delaware limited liability company (Contractor). Owner and Contractor are sometimes individually referred to herein as a Party and,
collectively, as the Parties.

W I T N E S S E T H:

WHEREAS, Owner is developing, constructing and intends to operate and maintain the Project located at the Project Site in order to produce
activated carbon and electricity from the processing of lignite coal;

WHEREAS, Owner and Contractor are parties to an Engineering,
Procurement and Construction Agreement dated as of January 29, 2008 (the Preliminary EPC Agreement) pursuant to which the Parties agreed upon the terms and conditions for providing certain preliminary engineering, design and
long lead procurement activities and certain terms and conditions to be included in this Agreement;

WHEREAS, the Parties intend to enter
into an agreement (the Site Work Agreement) providing for the performance of certain procurement and site work described in the Preliminary EPC Agreement;

WHEREAS, Owner has entered into certain Owner Contracts providing for, among other things, the delivery and erection of the Multi Hearth Furnaces, the
supply of lignite to be used as fuel at the Project, the purchase of activated carbon and electricity produced at the Project and the interconnection of the Project to the utility transmission system; and

WHEREAS, Contractor desires to provide for the engineering, design, procurement, construction, construction management, testing, commissioning and
related services for the Project, all of which shall be provided upon the terms and subject to the conditions set forth in this Agreement.



---

NOW, THEREFORE, in consideration of the foregoing premises and the mutual covenants and agreements
contained herein, and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the Parties covenant and agree as follows:

ARTICLE 1

DEFINITIONS; INTERPRETATION

1.1 Definitions. As used in this Agreement and in Notices delivered in accordance with this Agreement, capitalized terms have the following
meanings (such meanings as necessary to be equally applicable to both the singular and plural forms of the terms defined) unless the context otherwise requires:

Activated Carbon Production Requirement has the meaning set forth in Section 8.2.1.1.

Activated Carbon Specification Requirement has the meaning set forth in Section 8.2.1.2. These specifications relate to sizing and spraying activities to be conducted after carbon
product is removed from the Multi Hearth Furnaces and is not intended to make Contractor responsible for any activities or processes occurring inside the Multi Hearth Furnaces.

Affected Party has the meaning set forth in Section 11.1.

Affiliate means, with respect to any Person, any other Person which (a) such first Person directly or indirectly, in whole or in
part, owns, is owned by or is in common ownership with, or (b) such first Person directly or indirectly controls, is controlled by or is under common control with. The term control shall mean, with respect to a Person,
the possession, directly or indirectly, of the ability to influence management decisions regarding the business of such a Person, including the ability to block or otherwise limit major decisions of such Person (e.g., increased debt, sale or
transfer of share capital (initial or transfer of existing), operation and maintenance decisions, mergers or other restructuring, determination of business plans or budgets, entering into significant contracts or transactions, etc.).

Agreement means this Amended and Restated Engineering, Procurement and Construction Agreement, including the body of this Agreement
(the Body of this Agreement), all Appendices hereto, Change Orders, and all written amendments and supplements hereto.

Applicable Electronic Format means the electronic formats set forth in Appendix A.

Applicable Legal Requirements means all laws (including common law), statutes, regulations, codes, rules, treaties, ordinances, judgments, directives, Permits, decrees, decisions, approvals, interpretations, injunctions,
writs, orders or other similar legal requirements in effect of any Governmental Authority.

Application for Payment
means an application for payment under this Agreement, in the form attached as Appendix I-2A, which is to be used by Contractor during the course of Work in requesting monthly payments pursuant toSection 5.1.8, and which is
to be accompanied by such supporting documentation as is required by this Agreement.



---

Authorized Representative means, with respect to each Party, the individual appointed
by such Party under Section 20.1 to act on such Partys behalf with respect to that Partys duties and responsibilities under this Agreement.

Award has the meaning set forth in Section 17.2.6.

Balance of the
Project means all of the Project other than the Phase I Portion of the Project as more particularly described in Appendix A.

Business Day means any day, except Saturdays, Sundays, federal holidays, and holidays under the laws of the State of Louisiana.

Buy Down Amounthas the meaning set forth in Section 8.4.2.

Certificate of Final Completion has the meaning set forth in Section 6.8.3.

Certificate
of Mechanical Completion has the meaning set forth in Section 6.2.3.

Certificate of Phase I Mechanical
Completionhas the meaning set forth in Section 6.1.3.

Certificate of Phase I Substantial
Completion has the meaning set forth in Section 6.4.3.

Certificate of Substantial Completion
has the meaning set forth in Section 6.7.4.

Change or Changeshas the meaning set forth
in Section 10.1.

Change Event has the meaning set forth in Section 10.3.

Change of Law means the adoption, imposition, promulgation, re-interpretation, cancellation or modification of any Applicable Legal
Requirements by a Governmental Authority effective on or after the Commencement Date.

Change Order has the meaning set
forth in Section 10.1.

Change Order Notice has the meaning set forth in Section 10.2.2.

Change Order Request has the meaning set forth in Section 10.2.1.

Claims has the meaning set forth in Section 12.1.



---

Commencement Date has the meaning set forth in Section 2.1.2.

Completed Performance Test has the meaning set forth in Section 7.3.2.

Completed Phase I Performance Test has the meaning set forth in Section 7.3.1.

Completed Reliability Test has the meaning set forth in Section 6.7.8.1.

Confidential Information has the meaning set forth in Section 18.1.

Construction Aids means all tangible equipment (including construction equipment and machinery), apparatus, tools, supplies,
utilities, support services, field office equipment and supplies, structures, form lumber, protective fencing, and other goods and items that are required to construct, commission or test the Project, but which are not incorporated into the Project.

Construction Price means the amount of compensation applicable to the Work consisting of (a) the Fixed Component,
and (b) the Reimbursable Component, as such amount may thereafter be adjusted pursuant to this Agreement.

Consumables means the items listed in Contractors Consumables List set forth in Appendix O.

Contractor means BE&K Construction Company, LLC, a Delaware Limited Liability Company and its successors and assigns permitted under this Agreement.

Contractor Act of Bankruptcy means (a) if, by order of a court of competent jurisdiction, a receiver or liquidator or custodian
or trustee of Contractor, or of all or substantially all of the property of Contractor, is appointed and is not discharged within 60 days, or if, by decree of such a court, Contractor is adjudicated insolvent, or all or substantially all of the
property of Contractor is sequestered, and such decree has continued undischarged and unstayed for 60 days after the entry of such decree, or (b) if a petition to reorganize Contractor pursuant to the Federal Bankruptcy Code or any other
similar statute applicable to Contractor, as now or hereinafter in effect, is filed against Contractor and is not dismissed within 60 days after such filing, or (c) if Contractor is adjudicated bankrupt or files a petition in voluntary
bankruptcy under any provision of any bankruptcy law or consents to the filing of any bankruptcy or reorganization petition against Contractor under any such law, or (without limitation of the generality of the foregoing) files a petition to
reorganize Contractor pursuant to the Federal Bankruptcy Code or any other similar statute applicable to Contractor, as now or hereafter in effect, or (d) if Contractor makes an assignment for the benefit of creditors, or admits in writing an
inability to pay debts generally as they become due, or consents to the appointment of a receiver or liquidator or trustee or assignee in bankruptcy or insolvency of Contractor, or of all or substantially all of the property of Contractor.



---

Contractor Event of Default has the meaning set forth in Section 13.2.

Contractor Guaranty means a guaranty in the form set forth in Appendix I-8 executed by the Person obligated
thereunder.

Contractor Hazardous Substance has the meaning set forth in Section 2.2.13.2.

Contractor Indemnitees has the meaning set forth in Section 12.4.

Contractor Lien means a Lien upon the Project, the Work, the Project Site, or any Equipment or Materials, or any other property of
Owner or any of its Affiliates filed by or through Contractor or its Affiliates or Subcontractors or their respective Personnel in connection with the Work.

Contractor Lien Bond means a bond (a) issued by a surety company reasonably acceptable to Owner, (b) in form and substance reasonably acceptable to Owner, (c) in the amount necessary
under Applicable Legal Requirements to secure such Lien, and (d) sufficient (i) to permit Owner to obtain title insurance with no exceptions for such Contractor Lien, and (ii) to prevent the Lien holder from causing a sale,
foreclosure or other title divestiture with respect to the Project or the Project Site or improvements thereon or any Equipment or Materials or other property of Owner.

Contractor Permits has the meaning set forth in Section 2.2.10.

Contractor Subcontract means an agreement between Contractor and a Subcontractor.

Contractor
Taxes has the meaning set forth in Section 2.2.9.2.

Craft Labor means all of Contractors
and its Affiliates direct hourly craft labor for site supervision and direct hourly labor of all trades inclusive of general foremen, foremen, journeymen, apprentices, and others who perform construction and associated construction activities
in connection with the Work. Craft Labor excludes all of Contractors and Contractors Affiliates non-manual labor and all Subcontractor labor.

Craft Labor Categorymeans a specific trade or category of Craft Labor such as ironworkers, pipefitters, journeymen and operators, or especially skilled sub-categories within a craft.



---

Craft Labor Cost Component means a component of the cost of craft labor, such as wage
rates, fringes, per diems and incentive payments.

Craft Labor Cost Estimate has the meaning set forth in
Section 5.1.2and is the product of the Craft Labor Hour Target (for each classification of each Craft Labor Category) multiplied by the appropriate Craft Wage Rates.

Craft Labor Hours means hours of Craft Labor expended to perform the Work.

Craft Labor Hour Target has the meaning set forth in Section 5.1.2 and is the estimated total Craft Labor Hours for
completion of the Work.

Craft Wage Ratesmeans the total compensation for each and every Craft Labor Category by
classification, inclusive of wage rates, fringes, per diems, and incentive payments as set forth in Appendix K.

Defect, Defects or Defective has the meaning set forth in Section 4.2.

Defective Work has the meaning set forth in Section 4.2.

Disclosing Party has
the meaning set forth in Section 18.1.

Disputes has the meaning set forth in Section 17.1.1.

Dollars or $ or dollars means the lawful currency of the United States of
America.

Early Phase I Substantial Completion Bonus Amount has the meaning set forth in Section 8.5.

Early Substantial Completion Bonus Amounthas the meaning set forth in Section 8.6.

Effective Date has the meaning set forth in the first sentence of this Agreement.

Engineers means the Owner Engineer and the Financing Engineer.

Environmental Compliance Requirement has the meaning set forth in Section 8.2.1.5.

Equipment means any product that (a) is to be incorporated into the Project, (b) is an assembly of operational and/or
non-operational parts, whether motorized or manually operated, and (c) requires service connections such as, but not limited to, wiring or piping.



---

Excluded Change of Law means any Change of Law that is primarily applicable to
Contractor Taxes of any kind or nature, other than import duties on Contractor-provided Equipment and Materials.

Final
Completion means that Contractor has satisfied the requirements set forth in Section 6.8 with respect to the Project.

Final Completion Date has the meaning set forth in Section 6.8.3.

Financial
Closing means (a) the execution of binding arrangements for the provision of Financing, and (b) the initial release of proceeds from such Financing for payment to Contractor.

Financing means construction, interim and/or long-term financing on terms acceptable to Owner, the proceeds of which, including debt
and equity, are intended to be used for all or part of the costs of the Project, including lease financing.

Financing
Engineer means one or more individuals from an independent engineering firm used by the Financing Parties as independent engineer for the Project and the successors and permitted assigns of such independent engineer.

Financing Parties means any and all lenders, underwriters, financing institutions, including hedge funds, private equity groups,
credit enhancers and institutional investors, providing or facilitating Financing and their assigns and any trustee(s) or agent(s) acting on any of their behalf.

Fitch means Fitch, Inc., Fitch Ratings Ltd., its subsidiaries, and their successors.

Force Majeure has the meaning set forth in Section 11.1.

Full Notice to Proceed
means the Notice described in Section 2.1.2, the form of which is set forth in Appendix I-1.

Functional
Tests means the functional tests to be conducted by Contractor as described in the Scope of Work.

Governmental
Authority means any federal, state, county, regional, city, parish or local government body, agency, authority, branch, department, arbitrator, court or any subdivision, instrumentality or agency thereof, having or claiming, a regulatory
interest in, or jurisdiction over, the Work (or any portion thereof), the Project, the Project Site, this Agreement or one or more of the Parties as it relates to this Agreement.

Hazardous Substance means any element, compound, mixture, solution, particle or substance (a) which is included within the
definitions of (i) hazardous substances, hazardous wastes, toxic substances, hazardous pollutants or toxic



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pollutants in any Applicable Legal Requirement of any Governmental Authority of the United States or the State

of Louisiana and any applicable judicial, administrative and regulatory decrees, judgments and orders relating to the protection of human health or the environment,
including, the Comprehensive Environmental Response, Compensation and Liability Act of 1980, 42 U.S.C. Sections 9601 et seq., the Resource Conservation and Recovery Act, as amended, 42 U.S.C. Sections 6901 et seq. (RCRA),
the Toxic Substances Control Act, 15 U.S.C. Sections 2601 to 2671, the Clean Air Act, 42 U.S.C. Sections 7401 et seq., and/or the Federal Water Pollution Control Act, 33 U.S.C. Sections 1251 to 1387, (ii) any PCBs or
PCB items as defined in 40 CFR Section 761.3, and (iii) any asbestos, as defined in 40 CFR Section 763.63, (b) the presence of which requires investigation or Remediation under
any Applicable Legal Requirements, or (c) which is toxic, explosive, corrosive, flammable, infectious, radioactive, carcinogenic, mutagenic, or otherwise hazardous, and is or becomes, prior to Substantial Completion, regulated as a
Hazardous Waste or Hazardous Material by any Governmental Authority of the United States or the State of Louisiana. Hazardous Substances shall also include underground
storage tanks as defined in Section 9001 of RCRA, 42 U.S.C. § 6991.

Increased Throughput Bonus has the
meaning set forth in Section 6.7.8.3.

Indemnitee has the meaning set forth in Section 12.5.

Initial Synchronization means synchronization of the Project with the Transmission Facilities and transmission of
electric power from the Project to the Transmission Facilities for a minimum of one hour.

Intellectual Property has the
meaning set forth in Section 2.5.3.2.

Interconnection Agreement means that certain Interconnection
Agreement entered into between Owner and CLECO Power, LLC relating to the Project.

Investment Grade means a rating in
one of the four highest rating categories (without regard to subcategories within such rating categories) by a Rating Agency.

Key
Benchmark Project means a construction project involving use of 125 or more workers at peak or use of 50 or more workers of one single Craft Labor Category at peak, which is located within a radius of 150 miles from the Project Site,
excluding any project which primarily involves outage work and lasts for a cumulative duration of less than 60 days and excluding any project to which Contractor is providing engineering, procurement or construction services.

Key Personnel has the meaning set forth in Section 2.2.8.1.



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Labor Plan has the meaning set forth in Section 2.2.8.2.

Late Payment Rate means the lesser of (a) the prime rate of interest (sometimes referred to as the base rate) for corporate loans
as published in The Wall Street Journal under Money Rates as such rate may be in effect from time to time during the period the delinquent amount remains outstanding, plus two percent
(2%) per annum, or (b) the highest per annum interest rate allowed by Applicable Legal Requirements.

Late Phase I
Substantial Completion Damageshas the meaning set forth in Section 8.3.1.

Late Substantial Completion
Damages has the meaning set forth in Section 8.3.2.

Letter Agreement means that letter agreement,
dated August 15, 2008, by and between the Parties, as amended by the supplemental letter agreement dated August 25, 2008, as the same may be further amended or supplemented.

Letter of Credit means a documentary or standby letter of credit meeting the requirements of Appendix I-6.

Liens means any lien, encumbrance or security interest and includes mechanics liens, materialmens liens and
suppliers liens.

Lime Consumption Requirement has the meaning set forth in Section 8.2.1.3.

Materials means any products or supplies or materials that are to be incorporated into the Project, whether or not
substantially shaped, cut, worked, mixed, finished, refined or otherwise fabricated or processed. The term Materials is intended to include any item that is to be incorporated into the Project that is not Equipment or
Consumables.

Mechanical Completion means that Contractor has satisfied the requirements set forth in
Section 6.2 with respect to the Project.

Mechanical Completion Date has the meaning set forth in
Section 6.2.3.

Milestone(s) means the milestones identified in Appendix G.

Milestone Payment Schedule has the meaning set forth in Section 5.1.8and Appendix G.

Minimum Carbon Capacity Generation has the meaning set forth in Section 8.2.1.6.



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Maximum Lime Consumption Requirementshas the meaning set forth in
Section 8.2.1.7.

Minimum Net Electrical Output Requirementhas the meaning set forth in
Section 8.2.1.8.

Minimum Performance Requirements has the meaning set forth in Section 8.2.1.

Minimum Reliability Requirement has the meaning set forth in Section 6.7.8.2.

Moodysmeans Moodys Investor Service, Inc. and its successors.

MSDSs has the meaning set forth in Section 2.2.13.4.

Multi Hearth Furnaceor MHFmeans the multi hearth furnace(s) that will generate activated carbon from coal at
the Project.

Multi Hearth Furnace Agreements means the agreements between the Multi Hearth Furnace Supplier and Owner
for the supply and erection of the Multi Hearth Furnaces for the Project, as the same may be amended or supplemented in accordance with their respective terms.

Multi Hearth Furnace Suppliermeans the Person or Persons supplying the Multi Hearth Furnaces pursuant to the Multi Hearth Furnace Agreements.

Net Electrical Output has the meaning set forth in Appendix C.

Net Electrical Output Requirement has the meaning set forth in Section 8.2.1.4.

Notice means a written notice, order or other communication given under this Agreement to a Party in accordance with
Section 20.7.

Notice of Final Completion has the meaning set forth in Section 6.8.2.

Notice of Mechanical Completion has the meaning set forth in Section 6.2.2.

Notice of Phase I Mechanical Completionhas the meaning set forth in Section 6.1.2.

Notice of Phase I Substantial Completion has the meaning set forth in Section 6.4.2.



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Notice of Substantial Completion has the meaning set forth in
Section 6.7.3.

O&M Manual means the Project operations and maintenance manual to be provided by
Contractor to Owner in accordance with this Agreement.

OEM means, with respect to any item of Equipment, the original
manufacturer thereof.

Other Benchmark Project means a construction project involving use of 125 or more workers at peak
or use of 50 or more workers of one single Craft Labor Category at peak, which is located within a radius of 300 miles from the Project Site, excluding any project which primarily involves outage work and lasts for a cumulative duration of less than
60 days.

Owner means Red River Environmental Products, LLC, and includes its successors and assigns permitted under
this Agreement.

Owner Act of Bankruptcy means (a) if, by order of a court of competent jurisdiction, a receiver or
liquidator or custodian or trustee of Owner, or of all or substantially all of the property of Owner is appointed and is not discharged within sixty (60) days, or if, by decree of such a court, Owner is adjudicated insolvent, or all or
substantially all of the property of Owner is sequestered, and such decree has continued undischarged and unstayed for sixty (60) days after the entry of such decree, or (b) if a petition to reorganize Owner, pursuant to the Federal
Bankruptcy Code or any other similar statute applicable to Owner, as now or hereinafter in effect, is filed against Owner, and is not dismissed within sixty (60) days after such filing, or (c) if Owner is adjudicated bankrupt or files a
petition in voluntary bankruptcy under any provision of any bankruptcy law or consents to the filing of any bankruptcy or reorganization petition against Owner, under any such law, or (without limitation of the generality of the foregoing) files a
petition to reorganize Owner, pursuant to the Federal Bankruptcy Code or any other similar statute applicable to Owner, as now or hereafter in effect, or (d) if Owner makes an assignment for the benefit of creditors, or admits in writing an
inability to pay debts generally as they become due, or consents to the appointment of a receiver or liquidator or trustee or assignee in bankruptcy or insolvency of Owner, or of all or substantially all of the property of Owner.

Owner Agents means those third party contractors designated by Owner as having the same authority as Owner to review Contractor
Project documents, whether confidential or otherwise, and to have access to the Project Site.

Owner Authorized Parties
has the meaning set forth in Section 9.3.

Owner Contractmeans those contracts or purchase orders executed
or to be executed by Owner for any Owner Suppliers Scope, if any, as set forth in Appendix E.



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Owner Engineer means the engineering firm designated by Owner, for the benefit of
Owner, from time to time in a Notice to Contractor as Owners engineer for the Project.

Owner Events of Default
has the meaning set forth in Section 13.5.2.

Owner Guaranty means a guaranty in the form set forth in
Appendix I-7 executed by the Person obligated thereunder.

Owner Hazardous Substances has the meaning set forth
in Section 3.9.

Owner Indemnitees has the meaning set forth in Section 12.1.

Owner Insurance has the meaning set forth in Section 3.3.

Owner Permits has the meaning set forth in Section 3.2.

Owner Site Manager has the meaning set forth in Section 3.6.

Owner Supplier means a Supplier providing Equipment, Materials, construction work or other items or services for the Project pursuant
to an Owner Contract.

Owner Suppliers Scope means those items of Equipment and Materials, construction work, or
other items or services to be supplied by Owner pursuant to an Owner Contract.

Owner Taxes has the meaning set forth in
Section 3.4.1.

Owner Test Interruption has the meaning set forth in Appendix C.

Party and Parties have the meanings set forth in the second sentence of this Agreement.

Performance Requirements has the meaning set forth in Section 8.2.1.

Performance Tests means the tests designed to demonstrate satisfaction of the Performance Requirements to be conducted in accordance
with the test procedures and requirements set forth in Part 2 of Appendix C.

Permits means all waivers,
franchises, variances, permits, approvals, authorizations, licenses or orders of or from any federal, state, provincial, county, municipal, regional, environmental or other governmental body, instrumentality, agency, authority, court or other body
having jurisdiction over Owner or Contractor and their respective obligations under this Agreement or the Project, the Project Site, the performance of the Work, or the operation of the Project, as may be in effect from time to time.



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Person means any individual, corporation, partnership, limited liability company,
association, joint stock company, trust, unincorporated organization, joint venture or other entity with legal constitution under Applicable Legal Requirements, or any government or political subdivision or instrumentality or agency thereof.

Personnel means, with respect to a Person, such Persons employees, agents, independent contractors,
representatives, invitees, subcontractors, vendors and its agents, independent contractors, representatives, invitees, subcontractors, vendors respective employees, agents, personnel, representatives, invitees,
subcontractors, vendors or independent contractors.

Phase I Activated Carbon Production Requirement has the meaning set
forth in Section 8.1.1.1.

Phase I Activated Carbon Specification Requirement has the meaning set forth in
Section 8.1.1.2.

Phase I Environmental Compliance Requirement has the meaning set forth in Section
8.1.1.3.

Phase I Mechanical Completionmeans that Contractor has satisfied the requirements set forth in
Section 6.1with respect to the Project.

Phase I Mechanical Completion Date has the meaning set forth in
Section 6.1.3.

Phase I Operating Requirementshas the meaning set forth in Section 6.7.1.

Phase I Performance Requirements has the meaning set forth in Section 8.1.1.

Phase I Performance Tests means the tests designed to demonstrate satisfaction of the Phase I Performance Requirements to be conducted
in accordance with the test procedures and requirements set forth in Part 1 of Appendix C.

Phase I Portion of the
Project means the components of the Project to be completed in connection with achievement of the Phase I Substantial Completion Date as more particularly described in Appendix C.

Phase I Punch List has the meaning set forth in Section 6.5.



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Phase I Substantial Completion means that Contractor has satisfied the requirements
set forth in Section 6.4 with respect to the Phase I Portion of the Project.

Phase I Substantial Completion
Datehas the meaning set forth in Section 6.4.3.

Pre-Financial Closing Letter of Credit has the
meaning set forth in Section 2.1.4.

Preliminary EPC Agreement has the meaning set forth in the
Recitals.

Preliminary Mitigation Plan has the meaning set forth in Section 11.2.1.

Professional Standards means those standards and practices used by, and the degree of skill and judgment exercised by, recognized
United States engineering and/or construction firms, when performing high quality services on coal process plants and power plants similar to the Project, taking into account, as appropriate, the recommendations and requirements of vendors of
Equipment and Materials. It is not intended that Professional Standards as a standard of care may be used by Owner to require changes to Equipment or Materials that are described with specificity in Appendix A.

Project means the lignite coal processing, activated carbon-producing, and steam-electric generating facility located at the Project
Site, together with all Equipment, Materials, appurtenances and auxiliaries necessary for its operation, as described in Appendix A.

Project Interconnection Facilities has the meaning set forth in Section 2.2.15.1.

Project
Safety Manual has the meaning set forth in Section 2.2.12.

Project Schedule is the Level 3
schedule as of the Commencement Date that will be in effect for the Work, as such Level 3 schedule may be updated (in accordance with the terms of this Agreement) from time to time. The Level 3 Project Schedule is attached to this Agreement as
Appendix B.

Project Site means the land on which the Project will be located as described in
Appendix J.

Project Superintendent has the meaning set forth in Section 2.2.3.

Prudent Industry Practices means, at a particular time, the practices, methods, materials, supplies, equipment and standards of
safety, performance and service that are commonly applied in the electric utility industry in the United States to operate



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and maintain power plants similar to the Project, including the use of, and adherence to, equipment, practices and methods, applicable industry codes,
standards, and regulations that, in the exercise of reasonable judgment and in light of the facts and circumstances known at the time the decision was made, would be reasonably expected to accomplish the desired result while protecting the Project
and any individual from damage, loss or injury. Prudent Industry Practices are not intended to be limited to the optimum practice or method to the exclusion of all others, but rather to be a spectrum of possible, but reasonable practices and
methods, having due regard for, among other things, manufacturers and vendors requirements and warranties, Applicable Legal Requirements and the requirements of this Agreement.

Punch List has the meaning set forth in Section 6.7.6.

Qualified Security Providermeans an internationally-recognized United States financial institution with a Rating Agency rating of at
least A-, as determined by Standard and Poors, A3, as determined by Moodys, or a similar rating as determined by Fitch.

Rating Agencymeans any of Standard & Poors, Moodys or Fitch.

Receiving
Party has the meaning set forth in Section 18.1.

Record Drawings means the amended drawings and
documents specified in Section 2.2.4 of Appendix A. Record Drawings shall be updated to reflect changes made through Change Orders, plan clarifications, addenda, notices to bidders, field changes, responses to requests for
information, jobsite memos, and any additional details needed for the construction of the Project but not shown on the released-for-construction documents. Such drawings must be signed and sealed by a state-registered professional engineer and
submitted in accordance with Appendix A.

Record Documents has the meaning set forth in Section 2.13.

Recovery Plan has the meaning set forth in Section 2.3.2.1.

Reimbursable Component has the meaning set forth in Section 5.1.2.

Reimbursable Component Estimate has the meaning set forth in Section 5.1.2.

Release means spilling, leaking, pumping, pouring, emitting, discharging, injecting, escaping, leaching, dumping, or disposing into or
migration within the environment.



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Reliability Requirement has the meaning set forth in Section 6.7.8.2.

Reliability Test has the meaning set forth in Section 6.7.8.1.

Remediation means the investigation, handling, treatment, transportation, removal, disposal, remediation and cleanup of, and other
corrective action for, Hazardous Substances and/or damage to the environment caused by Hazardous Substances.

Replacement
Contractor has the meaning set forth in Section 13.4.1.

Required Contract Dates means the
Required Phase I Substantial Completion Date and the Required Substantial Completion Date as such dates may be adjusted pursuant to this Agreement.

Required Phase I Substantial Completion Date means the date that is * calendar days from the date of the Full Notice to Proceed, as such date may be adjusted by mutual agreement of the Parties in accordance with this
Agreement.

Required Substantial Completion Date means the date that is * calendar days from the date of the Full Notice
to Proceed, as such date may be adjusted by mutual agreement of the Parties in accordance with this Agreement.

Retainage has the meaning set forth in Section 5.1.13.

Retainage Letter of
Credit has the meaning set forth in Section 5.1.13.

Review Committee has the meaning set forth in
Section 20.20.

Rules has the meaning set forth in Section 17.2.1.

Sales Taxes has the meaning set forth in Section 2.2.9.1.

Scope of Work means the description of Work set forth in Appendix A.

Separate Contractors means the Multi Hearth Furnace Supplier, the Transmission Owner and any other subcontractors or vendors that will
perform work for or on behalf of Owner in order to satisfy Owners obligations under this Agreement.

Site Work
Agreement has the meaning set forth in the Recitals.

Specially Manufactured Equipment means any
Equipment (a) that is manufactured by a Supplier expressly for Contractor or a Subcontractor for use specifically in the Project, (b) that is not immediately transferable, adaptable or usable in any



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other project or capacity, to include other projects or uses similar in scope and/or purpose to the Project, (c) for which exact or reasonably similar
replacements are either not immediately available or would require special manufacture themselves, and (d) that is not one of the Owner-provided supplies.

Standard & Poors means Standard & Poors Ratings Group, Inc. and its successors.

Startup Period has the meaning set forth in Section 3.8.1.

Subcontractor means each and every Supplier, subcontractor or contractor of any tier performing any part of the Work, including providing any Equipment and Materials, directly or indirectly for or to Contractor.

Submittals means all documents required to be submitted to Owner by Contractor pursuant to Appendix A or
other provisions of this Agreement.

Substantial Completion means that Contractor has satisfied the requirements set
forth in Section 6.7.2with respect to the Project.

Substantial Completion Date has the meaning set forth
in Section 6.7.4.

Supplier means a manufacturer, fabricator, supplier, distributor, materialman or vendor
of Contractor or a Subcontractor.

Target Contract Dates means the Target Phase I Substantial Completion Date and the
Target Substantial Completion Date, as such dates may be adjusted pursuant to this Agreement.

Target Final Completion Datemeans the date that is 14 calendar days from the Substantial Completion Date, as such date may be adjusted by mutual agreement of the Parties.

Target Mechanical Completion Date means the date that is 640 calendar days from the Full Notice to Proceed, as such date may be adjusted by mutual agreement of the Parties.

Target Phase I Mechanical Completion Date means the date that is * calendar days from the date of Full Notice to Proceed, as such date
may be adjusted by mutual agreement of the Parties.

Target Phase I Substantial Completion Date means the date that is *
calendar days from the date of Full Notice to Proceed, as such date may be adjusted by mutual agreement of the Parties.



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Target Substantial Completion Date means the date that is * calendar days from the
date of Full Notice to Proceed, as such date may be adjusted by mutual agreement of the Parties.

Target Total Work Cost
means the Total Work Cost target set forth in Appendix P.

Taxes means all taxes, assessments, levies, duties,
fees, charges and withholdings of any kind whatsoever and all penalties, fines, additions to tax, and interest thereon.

Term means the period of time commencing upon the Effective Date and ending upon the earlier of the last day of the Warranty Period or the termination of this Agreement.

Termination Payment has the meaning set forth in Section 13.1.1.

Total Contractor Compensation means the actual total cost incurred by Owner to complete the Work under this Agreement, plus the actual
total costs incurred by Owner pursuant to the Site Work Agreement, the Preliminary EPC Agreement and the Letter Agreement, as amended (including, without limitation, all purchase orders and limited notices to proceed under such agreements).

Total Work Cost means the actual total cost incurred by Owner to complete the Work under this Agreement, plus the
actual total costs incurred by Owner pursuant to the Site Work Agreement, the Preliminary EPC Agreement, the Letter Agreement, as amended, and all Owner Contracts (including, without limitation, all purchase orders and limited notices to proceed
under such agreements).

Total Work Cost Bonus Amount has the meaning set forth in Section 5.10.

Transmission Facilities means the transmission facilities to be provided by the Transmission Owner.

Transmission Owner means Owners counterparty under the Interconnection Agreement.

Utility Facilities means the third party permanent facilities for potable water, sewer, phone, cable and other utility services to
which Contractor will connect the Project.

Utility Interconnection Points means the respective points where the Project
will be connected to each of the Utility Facilities as more particularly described in Appendix A.

Warranties means the warranties made by Contractor in Article 9.



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Warranty Defect has the meaning set forth in Section 9.3.

Warranty Period has the meaning set forth in Section 9.5.1.

Work has the meaning set forth in Section 2.2.

1.2 Certain Interpretative Matters. In this Agreement, unless the context otherwise requires:



| | (a) | the singular number includes the plural number and vice versa;
| | --- | --------------------------------------------------------------



| | (b) | reference to any Person includes such Persons successors and assigns that are permitted by this Agreement, and reference to a Person in a particular capacity excludes such
Person in any other capacity;
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (c) | any accounting term used and not otherwise defined in this Agreement has the meaning assigned to such term in accordance with generally accepted accounting principles in the United
States consistently applied;
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (d) | including (and with correlative meaning include) means (i) including without limiting the generality of any description preceding such term, and (ii),
with respect to any description following such term, means including, without limitation and including, but not limited to;
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (e) | reference to any Applicable Legal Requirement means such Applicable Legal Requirement as amended, modified, codified or reenacted, in whole or in part, and in effect from time to
time;
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (f) | a reference in a document to an Article, Section, Exhibit, Schedule, Annex, or Appendix is to the Article, Section, Exhibit, Schedule, Annex or Appendix of such document unless
otherwise indicated and Exhibits, Schedules, Annexes or Appendices to any document shall be deemed incorporated by reference in such document;
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (g) | without limiting the rights or obligations of the Parties pursuant to Article 10, any agreement, document, instrument, or insurance policy, defined or referred to herein
or in any agreement or instrument that is referred to herein (including this Agreement) means such agreement, document, instrument, or insurance policy, as from time to time amended, modified, supplemented, superseded, or replaced in accordance with
the terms thereof and, if applicable, the terms hereof, including (in the case of agreements or instruments) by waiver or consent, and references to all attachments thereto and instruments incorporated therein; and
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (h) | as indicated refers to drawings;
| | --- | ----------------------------------



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| | (i) | unless the context specifically requires otherwise, the terms approval, consent, accept, acceptance, authorization and
terms of similar import shall be deemed to be followed by the phrase which shall not be unreasonably withheld, unreasonably conditioned or unreasonably delayed;
| | --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (j) | hereof, herein, hereby, hereto, and similar words refer to this entire Agreement and not any particular article, section,
subsection or other subdivision of, or Appendix, or schedule to this Agreement;
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (k) | an amount is due or owing (or using words of similar meaning) when the payment period associated with such payment obligation has expired (excluding cure
periods); provided that all required documentation for such amount due has been properly provided to the owing Party;
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (l) | any discretionary activity to be exercised by a Person hereunder (including any approval to be granted by such Person) shall be deemed to include the requirement that such Person
exercise its discretion reasonably, unless otherwise specifically provided herein; and
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (m) | a month refers to a calendar month and a day refers to a calendar day.
| | --- | --------------------------------------------------------------------------

1.3 Order of Precedence.

1.3.1Notice. Each Party shall provide Notice to the other Party of any discovered conflict or inconsistency among any of the Appendices or between any of the Appendices and the Body of this Agreement promptly upon such Party acquiring actual
knowledge of such conflict or inconsistency. In the event of any conflict between provisions within the Body of this Agreement and the Appendices, the following order of precedence for construction and interpretation shall apply unless the Parties
otherwise agree:



| | (a) | Amendments and Change Orders to the Body of this Agreement duly signed and issued after the Effective Date, with those of a later date having precedence over those of an earlier
date;
| | --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (b) | The Body of this Agreement;
| | --- | ---------------------------



| | (c) | Change Orders to Appendices duly signed and issued after the date of this Agreement, with those of a later date having precedence over those of an earlier date;
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (d) | All Appendices to this Agreement.
| | --- | ---------------------------------

1.3.2Conflict. In the event of a conflict within any of the levels set forth in the order of precedence in Section 1.3.1, the Party identifying such conflict shall give Notice to the other Party and the Parties shall evaluate the
conflict and use their respective



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reasonable efforts to resolve the conflict and, as necessary, set forth the solutions in writing by executing a Change Order, as appropriate. In the event
the Parties are unable to resolve the conflict, the decision shall be made by Owner and must be consistent with Professional Standards, subject to Contractors rights under Article 17. Such resolution shall be provided by written
Notice to Contractor. In the event that a lower level of precedence set forth in Section 1.3.1 contains additional or more detailed requirements than are contained in a higher level precedence, the existence of such additional or
detailed requirement does not constitute a conflict. Notwithstanding anything in this Section 1.3, the provisions of this Agreement, including all Appendices, shall wherever possible be construed as complementary rather than conflicting.



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ARTICLE 2

CONTRACTORS WORK AND OTHER OBLIGATIONS

2.1 Commencement of the Work.

2.1.1Effective Date.

This Agreement shall be effective on the Effective Date.

2.1.2Full Notice to Proceed. After the Effective Date and
upon satisfaction of the requirements set forth in Section 2.1.3, Owner is entitled to deliver to Contractor a Notice in the form of Appendix I-1 (the Full Notice to Proceed), which will authorize
Contractor to commence full performance of the Work on the Business Day following delivery of such Notice (the Commencement Date). If the Full Notice to Proceed has not been delivered to Contractor on or before September 8,
2008 then the Fixed Component, the Target Total Work Cost and Project Schedule will be equitably adjusted to account for the delay in the issuance of the Full Notice to Proceed. If the Commencement Date has not occurred on or before
December 31, 2008 then the Parties shall negotiate, in good faith, a new Fixed Component, Target Total Work Cost and Project Schedule to effect Contractors performance of the Work; provided, however, that at any time after
December 31, 2008, if the Full Notice to Proceed has not been delivered, either Owner or Contractor may nevertheless terminate this Agreement upon 30 days prior Notice to the other Party, and the termination will be effected as described
in Section 13.1, without any other liability to either Party as a result of such termination unless the Full Notice to Proceed is delivered within such 30 day period.

2.1.3Notice to Proceed Requirements. In order for the Commencement Date to occur the following must occur:



| | (a) | The Owner Contracts are described in Appendix E;
| | --- | ------------------------------------------------



| | (b) | Contractor has provided Owner with evidence of insurance required to be obtained by Contractor in accordance with Appendix Q (if not previously delivered);
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------



| | (c) | Contractor has provided Owner with an executed Contractor Guaranty in the form of Appendix I-8, accompanied by an opinion of counsel substantially in the form of Appendix
I-10;
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (d) | Contractor has obtained those Contractor Permits required to be obtained by Contractor for the commencement of construction and Owner has received copies of such Contractor Permits;
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| | (e) | Owner has furnished to Contractor evidence of insurance required to be obtained by Owner in accordance with Appendix Q (if not previously delivered);
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------



| | (f) | Owner has obtained those Owner Permits required to be obtained by Owner for the commencement of construction and Contractor has received copies of such Owner Permits;
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (g) | If Financial Closing has not occurred, Owner has provided an executed Owner Guaranty to Contractor in the form of Appendix I-7, accompanied by an opinion of counsel
substantially in the form of Appendix I-10; provided, however, that the Owner Guaranty shall terminate upon Financial Closing;
| | --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (h) | Owner has provided access to the Project Site in accordance with Section 3.1;
| | --- | -----------------------------------------------------------------------------



| | (i) | Owner has paid all amounts then due and owing to Contractor under the Preliminary EPC Agreement, the Site Work Agreement and the Letter Agreement; and
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------

2.1.4Additional Security. If Financial Closing has not occurred, then on or before September 30, 2008, Owner shall furnish, or cause
to be furnished, to Contractor a Letter of Credit from a Qualified Security Provider in the maximum stated amount of not less than twenty-one million three hundred fifty thousand Dollars ($21,350,000) and otherwise in form and substance reasonably
satisfactory to Contractor (the Pre-Financial Closing Letter of Credit); provided, however, that such Pre-Financial Closing Letter of Credit shall terminate upon Financial Closing. If the Financial Closing has not
occurred by February 28, 2009, then as of February 28, 2009 and quarterly thereafter until Financial Closing occurs, Owner will cause the Pre-Financial Closing Letter of Credit to increase upon Contractors showing that the
then-current balance of the stated amount is insufficient to pay all amounts foreseeably due Contractor in the event of an Owner payment default (including, without limitation, cancellation charges under Contractor Subcontracts) prior to Financial
Closing. If Financial Closing has not occurred by July 15, 2009 and replacement of or extension to the letter of credit placed by Owner pursuant to the Letter Agreement has not been delivered to Contractor more than 10 days before July 31,
2009, then Contractor shall be entitled to draw the full amount of such letter of credit, which amount shall be held in escrow by Contractor and applied only to, and to the extent permitted in connection with, termination of the Agreement pursuant
to Sections 13.5 and 13.1.1. Within ten (10) Business Days following Financial Closing, Contractor shall return the letter of credit placed by Owner pursuant to the Letter Agreement or the Pre-Financial Closing Letter of Credit,
as applicable, to Owner.



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2.2 Work to be Performed. Except as otherwise expressly set forth in this Agreement as being the
responsibility of Owner, Contractor shall, in accordance with and subject to limitations contained in this Agreement, perform or cause to be performed all acts or actions required of Contractor under this Agreement, including designing, engineering,
inspecting (including special inspections), securing, permitting (with respect to Contractor Permits), procuring Equipment, Materials and Consumables, transporting, expediting, equipping, supplying, constructing, installing, connecting, training
operators, commissioning, starting-up, testing, construction management and administration of Owner Contracts in accordance with Appendix M and completing the Project (whether at the Project Site or elsewhere as applicable) and
satisfying Contractors warranty obligations during the Warranty Period (collectively, the Work). Contractor represents and warrants that it has thoroughly familiarized itself with all requirements of this Agreement regarding
the Work and has the requisite qualifications to perform, or cause to be performed, all aspects of the Work in accordance with this Agreement. Once performed and paid for in accordance with the terms of the Preliminary EPC Agreement, the Site Work
Agreement and the Letter Agreement, all work performed and equipment and materials supplied thereunder shall be part of the Work under this Agreement and part of the Equipment and Materials provided by Contractor under this Agreement.
Without otherwise limiting Contractors responsibility under this Agreement, furnishing Owner Suppliers Scope is not part of the Work. The Work shall be performed by Contractor in accordance with Professional Standards. Contractor shall
perform all managerial, supervisory, administrative services, and construction management that may be necessary to ensure the proper and timely completion of the Work in accordance with this Agreement. Contractor agrees that Contractor will be
ultimately responsible for the proper and timely completion of the entirety of the Work in accordance with this Agreement, whether performed by Contractor or by any Subcontractor. The intent of this Agreement is to relieve Owner of the necessity of
performing the Work, or any part thereof, to complete the Project in accordance with the requirements of this Agreement, except as expressly and specifically itemized herein as being performed by Owner in accordance with this Agreement. Contractor
hereby undertakes the following covenants and agrees to perform the Work and its obligations hereunder as follows:

2.2.1Engineering/Design, and Procurement Services. Effective as of the Commencement Date, Contractor represents and warrants that it has thoroughly familiarized itself with all aspects of the Work and has made such independent investigations
as it deems necessary such that any and all design, engineering or other information regarding the Work that Contractor has been provided by Owner shall either have been rejected by Contractor or accepted by Contractor without recourse to Owner.
Contractor shall not be entitled to relief under this Agreement and excuse of performance hereunder in the event of any inaccuracy or incompleteness with respect to any information provided by Owner with respect to the Work except Owner
Suppliers Scope. Effective as of the Commencement Date, Contractor represents and warrants that it has thoroughly familiarized itself with this Agreement, that it shall



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provide all engineering, and design, and procurement services necessary for the performance of all of its obligations under this Agreement, including without
limitation, achievement of Contractors responsibility for the Performance Requirements. Contractor shall perform, or cause to be performed, all engineering and design services that constitute a part of the Work in accordance with Professional
Standards and Applicable Legal Requirements, and the Project will be engineered and designed to operate in conformity with the requirements of this Agreement, Professional Standards, the operational requirements of the Interconnection Agreement and
Applicable Legal Requirements. Engineering, design, and procurement services shall include, without limitation, those services described in Appendix A. The Project shall be designed so as to be capable (subject to the performance of the
Owner Suppliers Scope) of producing activated carbon material; and of generating, transmitting and delivering electricity; while satisfying, subject to the terms hereof, each of the relevant Performance Requirements as demonstrated during the
Performance Tests. The Project shall also be designed so as to be capable of satisfying the Performance Tests and the Reliability Requirement. Contractor shall cooperate with Owner and Owner Engineer with respect to the performance by Owner of its
obligations under Article 3. All engineering or other components of the Work requiring certification under Applicable Legal Requirements shall be certified by professional engineers licensed and properly qualified in the State of
Louisiana to perform such engineering services. All such professional services shall be performed with the degree of care, skill and responsibility customary among such licensed personnel.

2.2.2Supervision and Superintendence.

2.2.2.1Supervision of Work; Responsibility. Contractor shall supervise and direct the Work competently and efficiently, devoting such attention thereto and applying such skill and expertise as may be
necessary to perform the Work in accordance with this Agreement. Contractor shall be responsible for the conduct of Persons under its supervision, including (without limitation, its Subcontractors, vendors, suppliers and contract counterparties).
Contractor shall be responsible for check-out, start-up, testing and turn-over of the Project and shall carry out those activities in accordance with all Applicable Legal Requirements, the start-up and check-out requirements and procedures as set
forth in Appendix A, the requirements for the Performance Tests and the other requirements of this Agreement. During start-up of the Project, Contractor shall coordinate with the operating Personnel to be provided by Owner pursuant to
Section 3.5 and shall schedule and phase-in the activities of such Personnel in accordance with an operator phase-in plan to be prepared and submitted by Contractor for Owners review and approval no later than 12 months after the
Commencement Date.

2.2.2.2Manufacturers Field Representatives. Contractor shall keep at the Project
Site, competent manufacturers



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field representatives and any necessary assistants in connection with the erection, installation, start-up, or testing of Equipment and other components of
the Work furnished, or for instruction and training of Owners Personnel thereon, as needed and/or as required by Appendix Aor the other provisions of this Agreement.

2.2.3Project Superintendent. At all times (when performing Work at the Project Site) and in any event and from and after the Commencement
Date, Contractor shall keep at the Project Site during the progress of the construction aspects of the Work a competent project superintendent (the Project Superintendent), who shall not be replaced without the prior written
concurrence by Owner. The Project Superintendent shall be solely dedicated to the performance of the Work. The Project Superintendent shall be Contractors representative at the Project Site and shall have authority to act on behalf of and bind
Contractor with respect to day-to-day decisions in the ordinary course of business; provided, however, that the Project Superintendent has no authority to execute a Change Order or amend this Agreement. Further, the Project
Superintendent shall be responsible for furnishing information on a timely basis as reasonably requested by Owner, shall have the authority to agree upon procedures for coordinating Contractors efforts with those of Owner, and shall be present
or duly represented at the Project Site at all times when the Work is being performed. Owner may rely upon the actions of the Project Superintendent taken within the authority set forth in this Section 2.2.3. Any communication (including
a Notice) given to the Project Superintendent will be deemed to be given to Contractor.

2.2.4Certain Project Site Related
Work. Contractor shall be responsible for clearing, preparation, excavation, and fill of the Project Site as is necessary to perform the Work in accordance with this Agreement. Contractor shall also be responsible to clear, prepare and rough
grade that portion of the Project Site on which the Transmission Facilities will be located. Such Work shall be performed in accordance with the Project Schedule to enable Owner to arrange for the timely installation of the Transmission Facilities
in accordance with a schedule for the Transmission Facilities provided to Contractor by Owner. Contractor shall provide for the procurement of all soil, gravel and similar materials required for the performance of or otherwise in connection with the
Work and the proper disposal of such materials in accordance with this Agreement and Applicable Legal Requirements. Contractor shall provide adequate treatment of and protection against soil erosion and water runoff resulting from the Work that is
in compliance with all Applicable Legal Requirements. Contractor shall provide for the proper collection and disposal of groundwater resulting from the Work. For the avoidance of doubt, Contractor shall have no responsibility for Hazardous
Substances located at the Project Site prior to the date Contractor first began performing Work at the Project Site.

2.2.5Reference Points. Contractor shall confirm engineering surveys establishing reference points for construction, which in Contractors judgment are necessary to enable Contractor to perform the Work. Contractor shall be responsible for
laying out the



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Work and shall protect and preserve such established reference points. Any changes to the established reference points shall require Contractor to update all
Submittals (including those previously submitted) reflecting the new reference points. Such updating shall be undertaken promptly, consistent with Professional Standards, and without delaying Work that will be based on such updating. Contractor
shall provide Notice to Owner whenever any reference point is lost or destroyed or requires relocation and shall be responsible for the accurate replacement or relocation of such reference points by professionally qualified Personnel.

2.2.6Procurement of Materials, Equipment.

2.2.6.1Procurement of and Responsibility for Materials and Equipment. Except as otherwise provided in this Agreement, as part of the Work, Contractor shall furnish and assume full responsibility for all
Equipment and Materials, Construction Aids, labor, transportation, construction equipment and machinery, tools, appliances, fuel and power, light, heat, telephone, water (including potable water for Personnel performing Work on the Project Site),
sanitary facilities, temporary facilities, internet and other communications access and all other facilities, products, items, supplies and incidentals necessary for the performance of its obligations under this Agreement.

2.2.6.2New Materials and Equipment; No Liens. Each item of Equipment and Materials supplied as part of the Work and all
other components of the Work that will become part of the Project turned over to Owner upon Substantial Completion shall be (a) new and unused and (b) free from any Liens or Claims by any third Persons; provided that in the case of
clause (b) above, Contractor shall not be responsible for any Liens or Claims resulting directly from the failure by Owner to make any payment properly due to Contractor in respect of such item. All Equipment and Materials delivered to the
Project Site shall be applied, installed, connected, erected, used, cleaned, and conditioned by Contractor in accordance with the instructions of the applicable Supplier.

2.2.6.3Safety Standards. All Work shall be designed to meet the safety standards established by applicable codes,
Applicable Legal Requirements and this Agreement.

2.2.6.4Total Cost Breakdowns. Contractor shall provide to
Owner a cost breakdown of the aggregate amount paid by Owner to Contractor for the Work in accordance with Appendix H. Such information shall be provided on or before the Required Substantial Completion Date. Such information shall be
updated on or before the Final Completion Date.



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2.2.7Inspection, Factory Tests and Expediting. Contractor shall perform all inspection,
component testing, expediting, quality surveillance and traffic services as necessary for the performance of the Work, including the provision of such services in connection with the Owner Contracts. Contractors responsibilities under this
Section 2.2.7 shall include inspecting and testing such Work and Equipment and Materials, as is customarily inspected and/or tested in accordance with Professional Standards, including inspecting Work in progress at intervals appropriate
to the stage of construction, fabrication or shipment on or off the Project Site as necessary to ensure that such Work is proceeding in accordance with this Agreement and the Project Schedule. All third party inspections, tests or approvals shall be
performed by qualified organizations acceptable to Contractor and Owner. Contractor shall perform all inspections and tests required by, and otherwise comply with, the Quality Assurance Program described in Appendix A. If Applicable Legal
Requirements require any Work to specifically be inspected, tested or approved, Contractor shall assume full responsibility therefor and furnish to Owner the required certificates of inspection, testing or approval. Not later than 30 days after the
Full Notice to Proceed is delivered to Contractor, Contractor will supply to Owner a quality surveillance plan for Specially Manufactured Equipment. Each monthly progress report delivered by Contractor shall specify the date, time and location of
factory tests, inspections and witness points of which Contractor is then aware of and intends to witness with respect to Equipment and Materials or other work to be provided or performed by its Subcontractors and/or Owner Suppliers in the month
following the month in which each such progress report is delivered to Owner. If and when Contractor obtains new information about such factory tests, inspections or witness points or other factory tests, inspections or witness points that was not
available to it when the monthly progress report was delivered, it will promptly advise Owner and update such information as necessary to allow Owner and the Owner Engineer a reasonable opportunity to attend such event. Contractor shall give
reasonable notice of changes to such dates, times and locations to allow Owner and the Owner Engineer to make arrangements to attend, it being understood that tests, inspections or witness points to be performed outside the United States will
require additional notice. Owner and its invitees (including representatives of Owner and the Engineers) shall have the right, but not the obligation, to attend any inspections, tests or approvals of such Equipment or Materials. In no event shall
Contractors obligation to provide notice regarding certain tests, inspections or approvals or Owners and its designees right to attend tests, inspections or approvals, limit, delay, or modify Contractors obligation to perform
all tests, inspections or obtain approvals required by this Agreement. Successful completion of factory or other off-Project Site tests is a precondition to shipment of such Equipment or Materials to the Project Site or other Contractor storage
facility; provided, however, that Contractor may authorize such shipment if, prior to shipment, Contractor presents a plan consistent with Professional Standards to Owner to rectify the reasons for such failure. Contractor shall
thereafter implement such plan and re-perform and demonstrate that such test has been passed. Should Contractor fail to give proper notice under this Section 2.2.7, at Owners option, Contractor shall re-perform or re-inspect any
such test or inspection as to which Contractor failed to give proper



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notice if Owner has reviewed the test results (which are to be provided to Owner within 7 days of such failure or as soon thereafter as test results are
available to Contractor) and gives notice to Contractor questioning the validity thereof. Attendance by Owner at any such test or inspection despite the lack of proper notice will waive Owners right to cause Contractor to so re-test or
re-inspect. Owner shall require that its Personnel conform to all safety and security requirements that may apply to the location where the inspection shall be performed.

2.2.8Labor and Personnel.

2.2.8.1Qualified Personnel. Except
as set forth in Section 3.5 with respect to operations and maintenance Personnel, Contractor shall provide competent and suitable qualified Personnel to perform the Work, and Contractor shall be solely responsible for all labor and
Personnel required in connection with the Work, including: (a) professional engineers licensed to perform engineering services in accordance with Applicable Legal Requirements and qualified to perform the type of engineering services required
by Contractor hereunder, and (b) the Project Superintendent who has the experience and authority to supervise and manage the Work on behalf of Contractor. Contractors staff shall include the key personnel set forth in
Appendix F, who shall be dedicated to the performance of the Work (the Key Personnel). Contractor shall in good faith consult with Owner regarding the removal or replacement of any Key Personnel prior to such action.
Without Owners prior approval, Contractor shall neither reassign Key Personnel to any other project nor give Key Personnel tasks related to any matter other than the Work, except to the extent that such reassignment or other tasks
(a) could not reasonably prevent, delay or hinder the performance of the Work by Contractor in accordance with this Agreement or (b) is necessitated by serious personal reasons (e.g., death, retirement, or personal or family illness). If
at any time during the performance of the Work, any of Contractors or its Subcontractors Personnel becomes reasonably unacceptable to Owner, then, upon notice from Owner setting forth its objections to the performance of such individual,
Contractor and Owner shall discuss such personnel issues and attempt to resolve any problem involving such individual. If the attempt to resolve such problem is not successful and the employee is unfit or unqualified in the reasonable judgment of
Owner, Contractor shall replace as soon as possible any such individual (other than the Project Superintendent and senior field superintendents, who shall be replaced only if grossly negligent in the supervision of the Work), in each case,
consistent with a diligent effort to find a suitable replacement and shall in good faith consult with Owner regarding such replacement. If at any time during the performance of the Work any of the Key Personnel should no longer be available to
perform services in connection with the Work, then Contractor shall replace such individual with a replacement reasonably satisfactory to Owner. The replacement or renewal of any such personnel will not entitle Contractor to a Change Order.



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2.2.8.2Labor Plan. In order to optimize the availability, recruitment,
safety, productivity, utilization and retention of Craft Labor needed to perform the Work at the Project Site, Contractor has developed and shall implement, the Craft Labor plan for execution of the Work (the Labor Plan). During
the performance of the Work, either Party will be entitled to recommend amendments to the Labor Plan. This Section 2.2.8.2 is not intended to limit the right of Contractor to a Change Order with respect to labor-related matters to the
extent Contractor is otherwise entitled to relief therefor under this Agreement.

2.2.9Certain Taxes.

2.2.9.1Sales Taxes. Contractor shall be responsible for the administration and timely payment, with reimbursement therefor
as provided in this Agreement, of all (a) sales and use taxes imposed by Applicable Legal Requirements upon Contractor that are properly payable (Sales Taxes) in connection with or arising from the Work, (b) Sales Taxes
on items incorporated into the Work or imposed by Applicable Legal Requirements upon Owner and for which Contractor has the responsibility to collect such Tax from Owner and (c) value added, excise taxes and import duties that are properly
payable by Contractor or any Subcontractor in performance of the Work. All other Taxes (except to the extent similar to those set forth in Section 2.2.9.2) imposed by non-U.S. Governmental Authorities, duties and fees of any kind, in
each case that are properly payable in connection with or arising from the performance of the Work will be reimbursed by Owner to Contractor. Owner shall reimburse Contractor for Sales Taxes in connection with or related to the Work that are
incorporated into the Work or that are imposed by Applicable Legal Requirements upon Owner and are paid by Contractor. Such reimbursement shall be made only upon the furnishing of reasonable documentation establishing that such Taxes have in fact
been paid to the appropriate taxing jurisdiction. Reimbursement for the Sales Taxes as provided in Section 3.4.2 shall be part of the Reimbursable Component, and Owner does not assume any further liability in connection with such Taxes.
Reimbursement for Sales Taxes on items incorporated into the Work shall be a contractual commitment to Contractor and Owner shall not have any direct liability to any taxing jurisdiction for Contractors failure to properly pay such Taxes.
Contractor agrees to indemnify and hold Owner harmless for any Taxes, interest, penalties or other costs that arise from the failure of Contractor to remit or timely remit Sales Taxes as required by Applicable Legal Requirements and this Agreement
or arising from the failure of Contractor to allow Sales Tax audits or to comply with any other requirements of the state and local taxing authorities in connection with the Work. In circumstances where a Sales Tax is imposed for purchases that are
not exempt from Sales Tax pursuant to exemption programs identified by Owner to Contractor or for which an exemption is not applicable, Contractor shall be reimbursed in accordance



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with Section 3.4 for its payment of all such Sales Taxes; provided, however, that if Sales Taxes (for which an exemption would have
otherwise applied) are paid on a purchase identified by Owner as tax benefit-qualified because of Contractors failure to furnish or cause to be furnished properly completed Sales Tax certificates as provided in Appendix Lor any
other failure by Contractor to perform its obligations hereunder, then Contractor shall reimburse Owner, at Contractors expense, for the reasonable costs incurred by Owner in seeking a refund of such Sales Taxes from appropriate authorities.
With respect to all purchases identified by Owner as tax benefit-qualified, Contractor shall furnish to the appropriate taxing authorities all required information and reports in connection with all Contractor Taxes and Sales Taxes. Contractor shall
furnish to Owner all required information and reports in connection with all Sales Taxes as are as described in Appendix L or otherwise reasonably requested in a Notice from Owner to Contractor. Contractor shall provide assistance as
reasonably requested by Owner or its tax consultant(s), in confirming eligibility and qualification for exemptions from Sales Taxes (and any other tax exemptions) to the relevant Governmental Authorities. From time to time and within 30 days of a
request therefor, Contractor shall provide Owner with information regarding quantities, descriptions, and costs of property installed at the Project reasonably requested by Owner in connection with the preparation of Owners tax returns,
satisfying regulatory requirements or as otherwise required in connection with Financing or with obtaining exemption from, or rebate of, Sales Tax. Contractor agrees to participate in any Sales Tax exemptions or rebate programs identified by Owner,
to complete and deliver the applicable documentation to obtain tax-exemption for purchases of Equipment and Materials, and to pass any Sales Tax savings or rebates through to Owner. Owner hereby notifies Contractor that all Equipment and certain
Materials and Consumables will be installed or used within an enterprise zone and therefore may be subject to Sales Tax rebates under the Louisiana Quality Jobs Act Program or the Louisiana Enterprise Zone Program upon Contractors
proper completion and presentation of the Sales Tax certificates set forth in Appendix L for purchases identified by Owner, subject to certain other terms and conditions of Sales Tax exemption and rebate programs.

2.2.9.2Contractor Taxes. Contractor shall be liable, without reimbursement by Owner hereunder, for (a) all foreign and
U.S. federal, state, local, and other taxes, which may be assessed on Contractors net income or gross receipts (except Taxes on gross receipts that are deemed to be Sales Taxes), and (b) all corporate engineering, contractor, or business
license costs and franchise fees required for Contractor to conduct business in the State of Louisiana, (collectively, the Contractor Taxes). Neither the Fixed Component nor the Total Work Cost will include Sales Taxes or
Contractor Taxes.



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2.2.9.3Applications for various federal, State of Louisiana, county and other
local incentive programs and inducements related to the construction of the Project have been (or will be) submitted by, or on behalf of, Owner. At the request of Owner, Contractor will support Owner and its consultants in order to fully utilize the
incentives offered. Participation in this effort, when requested by Owner, will include assistance with information requests to third Persons for filings related to the programs, assistance with tracking specific costs related to the incentive
programs, providing Contractor and Subcontractor employee headcounts and (to the extent reasonably available) payroll information, and other reasonable assistance as may be requested in a timely manner; provided, however, that such
assistance shall not require Contractor to (a) engage in lobbying or other efforts to obtain favorable legislation, (b) require the release of confidential personnel data or (c) engage in litigation, administrative proceedings, or
other efforts to obtain favorable judicial outcomes. Contractor shall cooperate and provide testimony, documentation and other relevant information in connection with Disputes with respect to Taxes assessed against, payable by or for which Owner is
responsible, to the extent relating to the Work performed under this Agreement.

2.2.10Permitting. Contractor shall obtain,
pay for, and maintain in effect, all permits and governmental approvals that are necessary for Contractor to perform the Work, excepting only Owner Permits (Contractor Permits). Owner shall obtain the Owner Permits, and Contractor
shall perform the Work so as to comply with and, as applicable, to maintain Owner Permits. Each Party shall provide the Party responsible for a Permit with information in its possession or reasonably available to it, as is reasonably required by the
responsible Party in order to obtain and keep such Permit in full force and effect. Costs incurred by Contractor to obtain and/or maintain licenses, certifications and other permissions of Governmental Authorities to conduct its business in the
State of Louisiana will not be part of the Construction Price.

2.2.11Personnel Training. In accordance with the Project
Schedule, Contractor shall provide the facilities, material, supplies, personnel and other items required to train the operations and maintenance personnel to be provided by Owner in the proper and safe operation and maintenance of the Project, as
further described in Appendix A.

2.2.12Safety Precautions. Until the Substantial Completion Date, Contractor
shall be solely responsible for developing, implementing, and administering job site safety requirements. Owner shall have no responsibility therefor, except as otherwise expressly provided in this Agreement. Beginning on the Substantial Completion
Date, Owner shall assume responsibility for developing, implementing, and administering site safety. Each Party, to include Financing Parties and the invitees of any Party, shall abide by the safety requirements of the Party that has responsibility
for administering such requirements. Contractor shall assign a full- time safety and health manager who will be responsible (until the Substantial Completion Date) for introducing, administering



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and monitoring procedures to promote safe working conditions at the Project Site, in compliance with Applicable Legal Requirements. In addition to reporting
to the Project Superintendent, such safety and health manager shall have direct reporting responsibility to Contractors home office management. Contractor shall notify Owner orally of all potential lost-time accidents at the Project Site
suffered by individuals at the Project Site as soon as possible but no later than any deadline to report such matter to a Governmental Authority. Contractor shall furnish Owner a written report describing each such accident, and the injuries
incurred, within 2 Business Days after occurrence of the accident, which shall include any written reports thereof required to be submitted to any Governmental Authority. Such report must also contain the cause of the occurrence (if known) and the
actions taken or to be taken to avoid repetition. Contractor shall promptly give Notice to Owner of any hazardous conditions at the Project Site immediately after it becomes aware of such conditions. Contractor shall also comply with Applicable
Legal Requirements and the requirements of Appendix Awith respect to the Work bearing on the safety of individuals or property (on and off the Project Site) or their protection from damage, injury or loss. Contractor has developed a
project safety manual, which manual includes (a) express prohibitions on the presence of alcohol, controlled substances, firearms (except, with the prior consent of Owner, for trained security personnel), explosives (except as necessitated for
performance of the Work), or other weapons at the Project Site or fighting or other disorderly conduct at the Project Site, (b) proper training and workplace examinations, (c) compliance with Applicable Legal Requirements,
(d) Contractors standard drug and alcohol testing protocol, and (e) a requirement for appropriately staffed on-site first aid trailers (the Project Safety Manual). Contractor shall initiate, maintain and supervise
reasonable safety precautions and programs in connection with the performance of the Work in accordance with the Project Safety Manual and shall take reasonable precautions for the safety of, and shall provide reasonable protection to prevent
damage, injury or loss to: (i) any individual at the Project Site or who may be affected thereby, (ii) all Materials and Equipment in storage at the Project Site, or under the care, custody or control of Contractor or any Subcontractor,
and (iii) other property at or immediately surrounding the Project Site. In emergencies affecting the safety or protection of Persons or the Work or property at the Project Site, Contractor, without special instruction or authorization from
Owner, shall reasonably act to prevent damage, injury, or loss. Whenever Contractor has failed to take sufficient precautions for the safety of the public or the protection of the Project or of structures or property at the Project Site, creating,
in the opinion of Owner, an emergency requiring immediate action, then Owner may cause such sufficient precautions to be taken or provide such protection. Owner shall give Contractor Notice as soon as practicable under the circumstances regarding
the action it intends to take, or if circumstances do not reasonably permit prior Notice, the action it has taken; provided, however, that the failure by Owner to include all actions it takes in such Notice shall not preclude Owner
from taking all necessary action, nor relieve Contractor of any of its obligations hereunder. The taking or providing of any such precautions or protection by Owner or its agents or representative will



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not relieve Contractor of its obligations under this Agreement and Applicable Legal Requirements. The cost incurred by or on behalf of Owner to take such
precautions or protection by or on behalf of Owner shall be added to the Construction Price.

2.2.13Hazardous Substances.

2.2.13.1Prevention of Releases; Notice. Contractor shall take reasonable measures necessary to prevent the
Release or threatened Release of any Hazardous Substances at the Project Site. Contractor shall immediately notify Owner of: (a) any Release or threatened Release of Hazardous Substances that occur (or may occur) in connection with the
performance of the Work promptly upon Contractor becoming aware of such Release or threatened Release, (b) any violations and any and all investigations, actions, claims, suits, notices of violation, fines, penalties, orders, and other
proceedings related to violations or alleged violations of Applicable Legal Requirements, including Permits issued thereunder, which are asserted against Contractor or any of Contractors Personnel or any Subcontractors in connection with the
Work or their activities on, along, adjacent to or near the Project Site, (c) Contractors discovery of any Releases of Hazardous Substances at the Project Site or nearby areas, and (d) all material developments with respect to
Section 2.2.13.1 (a)-(c). The provisions of this Section 2.2.13.1 shall not limit the obligations of Contractor under Section 2.2.13.2.

2.2.13.2Contractor-Related Releases.

(a) Contractor shall be responsible for collection, handling, storage and removal from the Project Site and immediately surrounding areas,
proper disposal of, and the Remediation of, in compliance with this Agreement, all Applicable Legal Requirements and all Permits, Hazardous Substances that were brought to the Project Site by Contractor, its Personnel or Subcontractors
(Contractor Hazardous Substance). For purposes of clarification, if Hazardous Substances are brought to the Project Site in containers or are deposited into containers at the Project Site by Contractor, its Personnel or
Subcontractors (or any other Person acting on behalf of Contractor, its Personnel or Subcontractors) and Contractor or any such Person thereafter ruptures or otherwise causes a Release of such Hazardous Substances, such Hazardous Substances as so
released and contaminated media caused thereby shall be a Contractor Hazardous Substance. As part of the Work, Contractor shall dispose of all Contractor Hazardous Substances in its own name, or the name of the applicable Subcontractor, including
listing its name, or the name of the applicable Subcontractor, as generator on any waste management and shipping papers.



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(b) Contractor shall be responsible for the incremental damage, incremental liability and
incremental Remediation associated with a Release or threatened Release of any non-Contractor Hazardous Substance after it has been discovered by or specifically identified to Contractor or its Subcontractors or their Personnel, to the extent that
such Release or threatened Release was caused by Contractor, its Subcontractors or their respective Personnel; provided, however, that Contractor liability under this subsection (b) shall not exceed one hundred thousand Dollars
($100,000). Contractor shall not be responsible for paying any portion of a fine that is imposed upon Owner as a result of a prior violation for which Contractor or its Subcontractors or their respective Personnel were not responsible.

(c) If Contractor should fail or refuse to commence and diligently pursue Remediation required of it in accordance with this
Section 2.2.13.2, then Owner may, at its discretion and after 48 hours Notice to Contractor, perform such Remediation as it deems necessary or adequate. All reasonable costs and expenses of such Remediation shall be billed to the
account of Contractor, who shall promptly reimburse such amounts to Owner, which amount shall not be included as part of the Total Work Cost.

(d) To the fullest extent permitted by Applicable Legal Requirements, Contractor agrees to and shall release, defend, indemnify and hold harmless the Owner Indemnitees from and against all Claims (except to the extent
Claims arise from the negligence or intentional misconduct of such indemnified Persons) to the extent arising out of (i) failure by Contractor to perform its obligations under this Section 2.2.13 with respect to Contractor Hazardous
Substances and/or (ii) the incremental damage, liability or Remediation for which Contractor is responsible under this Section 2.2.13.2 with respect to non-Contractor Hazardous Substances, whether through suits or causes of action
in a court of law or claim, complaints or penalties arising out of a violation or alleged violation of Applicable Legal Requirements.

2.2.13.3Other Releases. If Contractor encounters on the Project Site material reasonably believed to be a Hazardous Substance (other than a Contractor Hazardous Substance), which under Applicable Legal
Requirements or Professional Standards requires Contractor to suspend Work to avoid injury to Persons or property, then Contractor shall immediately cease performance of any Work in the area affected and report the condition to Owner in writing. As
and to the extent such material is not a Contractor Hazardous Substance, Owner shall be responsible for such material as provided in Section 3.9. Contractor shall not thereafter resume performance of the Work in the affected area, except
with the prior written permission of Owner.



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2.2.13.4MSDSs. Contractor shall provide Owner with Material Safety Data
Sheets (written in English, with English units of measure for all values) (MSDSs) properly completed covering any Contractor Hazardous Substances 3 Business Days prior to arrival of such Contractor Hazardous Substances to the
Project Site. Contractor shall maintain at the Project Site complete records and inventories, including MSDSs, of Contractor Hazardous Substances delivered to or located at the Project Site as part of the Work. In addition, Contractor shall receive,
maintain and incorporate into its records, the records and inventories, including MSDSs, of Hazardous Substances delivered to or located at the Project Site by the Separate Contractors; provided that Owner shall be responsible for insuring
that each of the Separate Contractors are contractually required to provide such information to Contractor. Contractor and its Subcontractors shall properly label all containers holding Contractor Hazardous Substances and train their respective
employees in the safe storage, usage and handling of such substances, including any training that is required by Applicable Legal Requirements.

2.2.13.5Prohibited Materials. PCBs, lead paint, lead paint containing materials, asbestos or asbestos containing materials shall not be delivered to the Project Site by Contractor, its Personnel or its
Subcontractors in any form or for any reason.

2.2.13.6Hazardous Substance Handling Protocol. Contractor
shall develop a Hazardous Substance management, handling and remediation protocol and shall adhere to such protocol in connection with the performance of all of its obligations with respect to Hazardous Substances at the Project Site.

2.2.14Royalties, Import Duties and License Fees. Contractor shall be responsible for the administration and payment of all royalties,
import duties, port fees and related charges, and license fees (except for fees and related charges for Owner Permits), if any, for or associated with the Work. In performing the Work, Contractor shall not incorporate into the Project any materials,
methods, processes or systems which involve the use of any confidential information, Intellectual Property or proprietary rights, which Owner and Contractor do not have the right to use or which may result in claims or suits against Owner or
Contractor for infringement or misappropriation of any Intellectual Property, or pending applications for any such rights, it being understood that Contractor will not be responsible for infringement or misappropriation of Intellectual Property by
an Owner Supplier.

2.2.15Interconnection Agreement.

2.2.15.1Transmission. Owner shall enter into the Interconnection Agreement, which will provide, among other things, for the
construction by the Transmission Owner of the Transmission Facilities. The Interconnection Agreement will specify the switchyard located at the Project Site and other facilities required to interconnect the Project with the Transmission



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Facilities (the Project Interconnection Facilities) and the date on which interconnection is to occur. Contractor shall cooperate with
Owner and the Transmission Owner to perform interconnection of the Project Interconnection Facilities with the Transmission Facilities.

2.2.15.2Utilities. Contractor shall connect the Project at the Utility Interconnection Points in accordance with the Project Schedule and Appendix A.

2.2.16[RESERVED]

2.2.17Storage and Related Matters. Contractor shall unload, handle, load, transport, inspect, maintain warehouse/inventory control, and otherwise provide appropriate storage, in accordance with manufacturers recommendations, for all
Equipment and Materials to be incorporated into the Project and as required for permanent and temporary construction.

2.2.18Functional Tests. Contractor shall include Functional Tests on the Project Schedule; shall prepare test plans and procedures for same; shall obtain Owner approval of same; and shall perform and successfully complete each of the Functional
Tests as described in the Scope of Work.

2.2.19Clean Site and Waste Removal. Beginning on the date Contractor commences
Work at the Project Site and continuing thereafter throughout the Term, Contractor shall keep the Project Site and immediately surrounding area (whether public or private), properties, waterways, sidewalks and other areas free from accumulations of
waste, rubbish, dirt, debris and other garbage, liquid and non-liquid materials whether spilled, dropped, discharged, blown out or leaked because of performance of the Work and shall properly dispose of same. Contractor shall maintain its working,
storage, laydown and parking areas in a clean and non-hazardous condition, and shall employ adequate dust control measures. Contractor is responsible for disposal of all wastes generated by it or its Subcontractors and Owner Suppliers during the
performance of the Work on the Project Site, including waste water (as directed), sanitary wastes, demolition debris, construction debris, spoil, surplus excavation material, office wastes, and wastes related to preparation, commissioning, testing,
and start-up of Equipment, but excluding (a) wastes for which Owner is responsible pursuant to Section 3.8.3, (b) Owner Hazardous Substances pursuant to Section 3.9 and (c) wastes that result from the operation
or maintenance of the Phase I Portion of the Project by or on behalf of Owner after the Phase I Substantial Completion Date, which shall be responsibility of Owner. Contractor shall handle, store or dispose of all wastes for which it is responsible
in accordance with Applicable Legal Requirements. Except as expressly permitted under this Agreement, wastes shall be disposed of in a suitable off-site location. On the Phase I Substantial Completion Date, Contractor shall leave the Phase I Portion
of the Project Site in a neat, clean and orderly condition, ready for use and occupancy by Owner, removing all waste materials, rubbish and debris. On



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the Substantial Completion Date or the date of termination of this Agreement if before the Substantial Completion Date, Contractor shall leave the Project
Site in a neat, clean and orderly condition, ready for use and occupancy by Owner, removing all waste materials, rubbish, and debris.

2.2.20Owner Contracts.

2.2.20.1Owner Contract Administration. Appendix E
includes a list of Owner Contracts that have been provided to Contractor. Commencing on the Commencement Date, Contractor shall exercise the authority granted to Contractor pursuant to Appendix M to administer each Owner Contract entered
into by Owner for the benefit of Owner. Administration shall commence on the Commencement Date; provided that a complete copy of the Owner Contract has been provided to Contractor. Contractor shall maintain in an orderly fashion all books,
records and written communications with respect to the performance of its responsibilities under this Agreement with respect to Owner Suppliers and the administration of Owner Contracts. Such books, records and communications (either paper copy or
electronic) may, at Contractors option, be maintained for a three-year period commencing on the Substantial Completion Date, or be delivered to Owner at any time upon the earlier of Final Completion or the earlier termination of this
Agreement. Owner shall be entitled to access to such materials while in the possession of Contractor on reasonable notice at reasonable times.

2.2.20.2Representative Capacity. Nothing contained herein shall create any contractual relationship between Contractor and any Owner Supplier, except that Contractor shall be designated as Owners
representative in each Owner Contract for the purpose of administering such Owner Contract and enforcing Owners rights expressed therein as set forth in Appendix M, but nothing herein shall make Contractor responsible to any extent for
the schedule or warranty performance of Owner Suppliers other than in connection with the manner in which any bonus hereunder is earned.

2.2.20.3Responsibility. Without limiting the other express obligations of Contractor under this Agreement, as between Owner and Contractor, Owner shall be responsible for the items of equipment,
materials and work to be provided pursuant to the Owner Contracts but, in its agency capacity, Contractor shall administer and enforce such Owner Contracts on behalf of Owner in accordance with the authority granted to Contractor pursuant to
Appendix Mand Contractor shall be responsible for coordinating performance by the Owner counter-party under each such Owner Contract.

2.2.20.4Liquidated Damages. Except as set forth below in this Section 2.2.20.4, liquidated damages, backcharges, refunds or other amounts of any kind recovered under the Owner Contracts or
Contractor Subcontracts are the property of Owner and will either be payable directly to Owner or, if received by Contractor, shall be credited against amounts to be paid by



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Owner in any of the next succeeding Applications for Payment. Amounts recovered by a Party in respect of an indemnification obligation are to be retained by
the indemnified Party and will not affect the Total Work Cost. Owner shall act reasonably in determining whether to initiate, continue, settle or abandon claims or proceedings against an Owner Supplier.

2.3 Project Schedule, Progress Reports and Progress Meetings.

2.3.1Project Schedule.

2.3.1.1Project Schedule and Progress
Reports. Without limiting Contractors responsibilities under Article 8, Contractor shall perform the Work in accordance with the Project Schedule with the objective of achieving the Target Contract Dates and the Required
Contract Dates. The Project Schedule, the Target Contract Dates and the Required Contract Dates (including those dates on which Owner is to perform any obligation hereunder as contained in the Project Schedule) may only be modified by agreement of
both Parties. Contractor shall report progress on the Work and hold progress meetings as specified in Appendix A, which reports and meetings will include matters and activities relating to any on-going or anticipated Recovery Plans.

2.3.1.2Reporting to Owner. Changes to the Project Schedule shall be reflected in the monthly reporting
process as more particularly set forth in Appendix A.Such Project Schedule and all updates, each in native format, thereto shall be treated as Confidential Information by Owner, subject to the following provisions of this
Section 2.3.1.2. Owner, Owner Agents, and the Engineers will be permitted to view the Project Schedule in native format (Primavera Project Planner (Level 3)) during schedule reviews conducted by Contractor. Owner shall be entitled to
retain its copies of the Project Schedule (Primavera Project Planner (Level 3)) in native format for use in connection with the Project and may make such information available to its employees and Owner Agents for its purposes in connection with the
Project. Upon expiration of the Term, Owner shall return or destroy all copies of the Level 3 Project Schedule; provided that Owner may retain one paper and one native format copy of each monthly schedule provided to Owner.

2.3.2Recovery Plan.

2.3.2.1Preparation. If, at any time during the performance of the Work, Owner or Contractor reasonably believe it either is (or will be) delayed in its adherence to the then current critical path progress described in the
Project Schedule for any reason, the Party making such determination shall give Notice to the other Party and Owner may require Contractor to prepare a proposed plan of recovery (the Recovery Plan) and implement it. A Recovery
Plan will explain and demonstrate how Contractor intends to re-sequence or progress the remaining Work such that the Project Schedule should be achieved, if practicable, or as soon thereafter as possible if not practicable.



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2.3.2.2Review; Implementation. Contractor shall submit its initial
proposed Recovery Plan to Owner within a reasonable period of time under the circumstances and which in no event will exceed 14 days of receiving Notice from Owner of the requirement for submission of a Recovery Plan. Upon receipt of such proposed
Recovery Plan, Owner shall review and comment upon the same. Contractor shall coordinate with and incorporate any reasonable comments proposed by Owner to its proposed Recovery Plan and shall update and supplement such Recovery Plan as quickly as
possible under the circumstances. Contractor shall implement such Recovery Plan in order that, to the maximum extent possible, the Target Contract Dates and the Required Contract Dates will be achieved. If Contractor determines it necessary to
update or modify its Recovery Plan to reflect the progress of its recovery Work, it shall as soon as reasonably possible submit such modified or updated Recovery Plan in writing, to Owner. Neither Owners review nor comment upon a Recovery Plan
under this Section 2.3.2.2 will relieve Contractor of any of its obligations under this Agreement. Contractors compliance with Owner requests under this Section 2.3.2 does not waive or limit Contractors rights, if
any, under Article 10.

2.4 Methods of Performance. Contractor shall be solely responsible for all construction means,
methods, techniques, sequences, procedures and safety and security programs in connection with the performance of the Work.

2.5
Transfer of Title/Risk of Loss for Certain Items.

2.5.1Title to Work. Title to all or any portion of the Work covered by
any Application for Payment shall pass to Owner upon the first to occur of payment therefor to Contractor pursuant to this Agreement or delivery of such items to the Project Site. Title to all such Work (including Contractor-supplied Equipment and
Materials) shall pass free and clear of all Liens; provided, however that Owner has paid all amounts then due and owing to Contractor in respect of such Work. Notwithstanding the transfer of title to Owner, Contractor shall be
responsible for the care, custody, control, protection and safe keeping of all Work (and will maintain the risk of loss with respect to all Work) and once delivered to the Project Site, all Equipment and Materials provided under any Owner Contract
and/or by Owner Suppliers, in each case, until the transfer of care, custody and control of the Project Site to Owner on the Substantial Completion Date; provided that (a) care, custody and control of the Phase I Portion of the Project
shall transfer to Owner on the Phase I Substantial Completion Date, and (b) in the case of the Owner Contract for the MHF, Contractor will be responsible for protection and safe keeping of MHF Equipment and Materials but not the care,
maintenance, and weather protection of the Multi Hearth Furnaces. The foregoing notwithstanding, Contractors liability for loss or damage to the Work located at the Site is limited



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to the proceeds of the builders risk insurance to be maintained for the Work; provided, however, that (i) Contractor is responsible
for the deductible per occurrence, not exceeding $250,000 in each instance, under such insurance for a loss that arises from the Contractors or its Subcontractors negligence or failure to perform in accordance with this Agreement (or the
Site Work Agreement, the Preliminary EPC Agreement or the Letter Agreement, as the case may be) and (ii) Contractor is responsible for uninsured loss to the Work at the Site that arises from the Contractors or its Subcontractors
failure to perform in accordance with this Agreement (or the Site Work Agreement, the Preliminary EPC Agreement or the Letter Agreement, as the case may be) up to an aggregate liability limit under this clause (ii) of Three Million Dollars
($3,000,000) and any such claims above this aggregate liability limit are waived by Owner.

2.5.2Risk of Loss to Contractor
Property. The risk of loss and responsibility for construction equipment utilized by Contractor or its Subcontractors, whether owned by Contractor, a Subcontractor or their Affiliates or rented or leased from a third party, is retained by
Contractor.

2.5.3Title to Drawings, Reports, Documents and Information.

2.5.3.1Submittals. Contractor hereby assigns title to all Submittals (hard and soft) provided by Contractor to Owner pursuant to
this Agreement; provided, however, that, the respective rights of the Parties to the Intellectual Property therein contained are set forth in this Section 2.5.3.

2.5.3.2License. Contractor grants to Owner the irrevocable and absolute right to practice, perform, make, copy, create
derivative works of, import and otherwise use by irrevocable, non-exclusive, perpetual, transferable or assignable, royalty-free license, any and all patents, patent applications, copyrights, trade secrets and other intellectual property rights of
Contractor (Intellectual Property) and any Submittals, Record Documents and Intellectual Property contained therein relative to the Project that is included in the Work, whether now existing or hereinafter developed or otherwise
acquired, but only to the extent reasonably necessary in connection with the ownership, construction, operation, maintenance, improvement, replacement, expansion or repair of the Project. Contractor further agrees that it shall, upon request,
provide the aforementioned Persons with such information during the performance of this Agreement in a timely fashion and subject only to the confidentiality restrictions provided in Article 18. Nothing herein implies conveyance of any
Intellectual Property of third parties other than Contractor vendors to the extent set forth in purchase agreements.

2.5.3.3Inventions. All inventions directly related to Owner processes or operations arising from the Work shall be the property of Owner. In the event Contractor obtains legal entitlements to such inventions, the provisions
of this paragraph shall require Contractor to transfer such entitlement to Owner prior to the Final Completion Date, without cost to Owner. Contractor



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grants to Owner an irrevocable, royalty-free, non-exclusive, transferable or assignable and perpetual license and right to practice, perform, make, copy,
create derivative works of, import and otherwise use any and all inventions reasonably arising from the Work that are necessary for the construction, operation, maintenance, improvement, replacement, expansion or repair of the Project, all without
additional cost to Owner in connection with the Project.

2.5.3.4Use. Contractor grants to Owner an
irrevocable, perpetual, non-exclusive, royalty-free, and transferable or assignable license and right to practice, perform, make, copy, create derivative works of, import and otherwise use any and all Submittals, Record Documents and the information
contained therein. Contractor shall have the right to retain and use all Submittals, Record Documents and the information contained therein. Owner shall not acquire any rights to any of Contractors or any Subcontractors reference
documents (documents that are prepared prior to the performance of the Work or are prepared independent of the Work and, in each case, are not a Submittal) or proprietary computer software that may be used in connection with the Work. Submittals and
Record Documents are not intended or represented to be suitable for reuse by Owner or others for any facility other than the Project. Any reuse of Submittals or other Record Documents for any purpose other than in connection with the Project,
without prior written verification or adaptation by Contractor for the specific purpose intended, will be at such users sole risk.

2.5.3.5Survival. The provisions of this Section 2.5.3 shall survive termination of this Agreement and continue in full force and effect for perpetuity.

2.5.4Title to Natural Resources. Title to water, soil, rock, gravel, sand, minerals, timber and any other resources developed or obtained
in the excavation or the performance by Contractor of the Work and the right to use said items or dispose of the same is hereby expressly vested in and reserved by Owner. Contractor agrees to execute and deliver and cause its employees and agents
and all Subcontractors to execute and deliver to Owner transfers, assignments, documents or other instrument which are necessary to vest complete right, title, interest and ownership of and to any or all items described herein, exclusively in Owner.
Notwithstanding the foregoing to the contrary, Contractor shall be entitled to use any natural resources developed or obtained in the excavation or clearing of the Project Site as necessary for the performance of the Work.

2.5.5Title to Fossils and Artifacts. Title to all fossils, coins, articles of value or antiquity, and structures and other remains or
things of geological or archaeological interest discovered at the Project Site shall (as between the Parties) remain with and be the property of Owner. Contractor shall use reasonable efforts not to damage any such articles or items and shall not
knowingly remove any such articles or items. Contractor shall, immediately upon the discovery of any such article or item, provide Notice to Owner and safeguard such articles or items.



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2.5.6Title Warranty. Contractor warrants that upon passage of title to the Work in
accordance with Section 2.5.1, Owner will have good and indefeasible title to such Work not subject to any Lien, privilege, security interest or other defect in title. Without limiting Contractors obligation under
Section 12.2, in the event of any non-conformity with this warranty, Contractor, at its own expense upon written Notice of such failure, shall cure such defect. The provisions of this Section 2.5.6 will survive the execution
or earlier termination of this Agreement.

2.6 Subsurface Conditions. Contractor represents that it has inspected the Project Site,
conducted such tests and made such investigations that are consistent with Professional Standards, reviewed the information provided to it by Owner relating to surface and subsurface conditions, properly interpreted such Owner-provided information
and the results of such inspections and tests, and performed any additional tests and surveys it deemed advisable, and Contractors design assumes the accuracy of all such information. Contractor is not liable for actual subsurface conditions
which materially deviate from the conditions which were expected or should have been expected consistent with Professional Standards from the information provided by Owner as well as Contractors tests and investigations described herein.
Contractor will be entitled to a Change Order for the associated adverse impact only if actual subsurface conditions are encountered by Contractor that materially deviate from such information and/or the results of such inspections or tests, and/or
the reasonable interpretation thereof.

2.7 Local Conditions. Contractor represents that it has taken steps necessary to examine and
ascertain the nature and location of any and all general and local conditions relevant to the Work and its surroundings and the cost thereof, and that it has investigated and satisfied itself as to the general and local conditions that can affect
the Project, the Project Site, and/or the performance of the Work, including transportation, inland transit, access and egress (subject to Section 3.1), laydown, parking, storage of materials, availability of utilities and utility
services, location of local residences and businesses, water, waste disposal, electricity, roads, or other public goods or services, reasonably foreseeable climatic conditions at the Project Site (subject to Section 11.1), Applicable
Legal Requirements, and the character and availability of equipment and facilities needed preliminary to and during the prosecution of the Work.

2.8 Subcontractors and Owner Suppliers.

2.8.1Subcontractors. Contractor may have portions of the Work
performed by Subcontractors. Contractor agrees that (a) with respect to services performed by non-manual personnel, Contractor will only subcontract Work to Affiliates at or below prevailing market rates for such Work or at rates otherwise
approved by Owner, and (b) pursuant to a subcontract entered into in good faith and at market-based rates after notice to Owner and receipt of Owners prior consent.



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2.8.2No Privity with Owner. Owner shall not be deemed by virtue of this Agreement or
otherwise to have any contractual obligation to, or relationship with, any Subcontractor. Contractor shall include a clause to this effect in each Contractor Subcontract with its Subcontractors.

2.8.3Certain Subcontracts.

2.8.3.1Contractor Subcontracts. Contractor shall ensure that the terms of each Contractor Subcontract with an aggregate value equal to or exceeding fifty thousand Dollars ($50,000.00) provide that it
may be, without requiring the prior consent of the relevant Subcontractor, in whole or in part, assigned and delegated by Contractor to Owner, upon assumption of the obligations in respect of such Contractor Subcontract by Owner, in the event of a
termination of this Agreement for any reason.

2.8.3.2Confirmation of Performance. Contractor shall use
commercially reasonable efforts to obtain provisions in each Contractor Subcontract with an aggregate value less than fifty thousand Dollars ($50,000.00) and shall cause each Contractor Subcontract with an aggregate value equal to or exceeding fifty
thousand Dollars ($50,000.00) to provide, upon notification to the Subcontractor, that if: (a) this Agreement has been terminated for any reason, and (b) Owner or its designee shall thereafter be assuming Contractors obligations in
full under such Contractor Subcontract, then such Subcontractor shall continue to perform its responsibilities under such Contractor Subcontract for the benefit of Owner or its designee and such Subcontractor shall recognize Owner or its designee as
being vested with all the rights and responsibilities of Contractor from and after such assignment and assumption of such Contractor Subcontract.

2.8.3.3Notice. Within 30 days of the execution of a Contractor Subcontract with an aggregate value less than fifty thousand Dollars ($50,000.00), Contractor will give Owner notice of the identity of the
Subcontractor if it will be providing Work that will be physically incorporated into the Project, will be valued in excess of ten thousand Dollars ($10,000.00) and will not permit assignment of its Contractor Subcontract in accordance with
Section 2.8.3.2 (a) and (b).

2.8.4Purchase Orders and Subcontracts. Contractor shall furnish to
Owner a copy of each Contractor Subcontract with an aggregate value equal to or exceeding fifty thousand Dollars ($50,000.00) entered into by Contractor within 14 days following Contractor entering into such Contractor Subcontract. Such copy is for
informational purposes only and Owner shall not have any liability with respect thereto, including the terms and condition (or lack thereof) of such Contractor Subcontract. Thereafter,



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Contractor shall furnish to Owner a copy of any amendment or supplement to any such Contractor Subcontract within 14 days after entering into such amendment
or supplement. Contractor shall also provide to Owner a list of all Contractor Subcontracts that it is a party to for Contractor Equipment and Materials that are incorporated into the Project. Such list will identify the Subcontractor and describe
that portion of the Work provided by such Subcontractor. Such list will be delivered within 30 days of the Full Notice to Proceed and shall be periodically updated by Contractor through Final Completion.

2.8.5Subcontractor Warranties. Contractor shall use reasonable commercial efforts to procure from all Subcontractors entering into a
Contractor Subcontract with an aggregate value equal to or exceeding fifty thousand Dollars ($50,000.00) warranties substantially similar (in length and in scope) to those required of Contractor under Article 9. All such warranties shall
be enforceable by Contractor or, as noted in the proviso in the next sentence and in the sentence thereafter, by Owner. Contractor shall enforce all Subcontractor warranties itself and/or on behalf of Owner prior to Substantial Completion of the
Work to which such warranty relates. Owner shall have the right to enforce such warranties after Substantial Completion of the Work to which such warranty relates and prior to such time if Contractor fails to do so following Notice from Owner and an
opportunity for Contractor to cure. At the earlier of (a) Substantial Completion of the Work to which such warranty relates, or (b) the date of termination of this Agreement, Contractor shall assign to Owner its rights under any and all
Subcontractor warranties that continue after such date. Contractor shall secure such assignment from each Subcontractor, and at the earlier of (i) Substantial Completion of the Work to which such warranty relates or (ii) the date of
termination of this Agreement, Contractor shall deliver to Owner copies of all Contractor Subcontracts providing for warranties that continue in effect after such date.

2.8.6Subcontractor Insurance. Contractor shall require all Subcontractors who perform activities on the Project Site to obtain, maintain and keep in force throughout the time during which they are
engaged by Contractor such insurance coverages as are set forth in Appendix Q in addition to those that are normal and customary under Professional Standards for the portion of the Work to be performed on the Project Site by such
Subcontractor.

2.9 Insurance. Contractor shall obtain and maintain in full force and effect during the Term of this Agreement (or
for such other term as may be required under Appendix Q) insurance in accordance with, and meeting the requirements set forth in, Appendix Q. Contractors further obligations with respect to insurance are also set forth in
Appendix Q. In addition, the foregoing provisions requiring Contractor to obtain or maintain insurance shall not be construed in any manner as waiving, restricting or limiting the liability of Contractor as to any obligations imposed
under this Agreement, whether or not the same are, or may be, covered by insurance.



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2.10 Compliance with Applicable Legal Requirements. Contractor shall comply with all Applicable
Legal Requirements in connection with its performance of the Work and the Work as supplied and constructed by or on behalf of Contractor shall function when operated in accordance with the Project O&M Manual and shall comply with all Applicable
Legal Requirements.

2.11 Real Estate. Contractor acknowledges that it does not require rights to use any real estate, including any
easements or access rights for other property, which is not included in the Project Site in order to perform the Work, including areas for storage, parking and construction laydown.

2.12 Use of Project Site.

2.12.1Use and Restoration. Contractor shall perform the on-site Work at the Project Site, subject to any restriction thereon specified in Appendix J, and shall not conduct activities or store equipment or materials unrelated to the Work
at the Project Site. Contractor shall restore the Project Site to the final landscape plan and Project Site plan as developed by Contractor and approved by Owner. As soon as practicable after the Substantial Completion Date, Contractor shall clear
the Project Site of Construction Aids and surplus materials except as needed for Final Completion. Within 30 days after the Final Completion Date, Contractor shall remove all of its Construction Aids and surplus Materials from the Project Site,
except as necessary for Contractor to attend to a warranty claim.

2.12.2Site Authority. Consistent with the provisions of
this Agreement and Section 3.1, it is understood between the Parties that Contractor shall have primary authority over the Project Site from the Commencement Date until Substantial Completion has occurred. Contractor is responsible for
the safety, security and discipline of Persons and property on the Project Site from the Commencement Date until Substantial Completion as provided in Section 2.2.12. After the Commencement Date, Contractor will provide access to work
areas to Owner or Separate Contractors as reasonably required for performance of activities to be performed by such Persons, consistent with the proviso set forth in Section 3.1 and after the turnover of care, custody and control of the
Phase I Portion of the Project Contractor shall provide access to Owner and its designees in order for Owner to operate and exercise care, custody and control of the Phase I Portion of the Project.

2.13 Record Documents. Contractor shall properly and currently maintain accessibility to all Submittals, field change notices, requests to
engineering (and associated approvals or disapprovals), Change Orders, field test records, and written interpretations and clarifications (collectively, Record Documents) indexed and currently annotated to show all material
changes made during performance of the Work. Once Contractor commences construction Work at the Project Site, Record Documents shall be maintained at the Project Site. Record Documents will be maintained in Applicable Electronic Format. Owner, Owner
Agents, and Engineers shall have access to such Record Documents at all times during the Term and may reasonably request paper (or portable document



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format (PDF)) copies of these Record Documents. Prior to Final Completion, Contractor shall provide Owner with surveyed Record Drawings that have been
conformed to construction records, as specified in Appendix A. A copy of all Record Documents (excepting only Submittals) in Applicable Electronic Format shall be provided to Owner by Contractor at the earlier to occur of
(a) Substantial Completion with respect to the Phase I Portion of the Project and (b) Final Completion with respect to the Balance of the Project, or (c) termination of this Agreement. For purposes of clarity, Submittals shall be
provided to Owner by Contractor pursuant to Section 6.8.1(e).

2.14 Submittals.

2.14.1Review. Contractor shall submit to Owner for review in accordance with the accepted schedule of submissions, copies of Submittals as
specified in Appendix Awith respect to the Work, which shall bear the required information that Contractor has satisfied Contractors responsibilities under this Agreement with respect to the review of the submission. Title block
information on all Submittals shall be as agreed between Owner and Contractor. The data shown on Submittals shall be materially complete with respect to quantities, dimensions, specified performance and design criteria, materials, and similar data
to enable Owner to review the information as contemplated by Section 2.14.3.

2.14.2Variations. At the time of
each submission, Contractor shall specify in writing each variation that the Submittal has from the requirements of Appendix A, and in addition, shall cause a specific notation to be made on each submittal submitted to Owner for review
of each such variation.

2.14.3Due Consideration. Owner shall review Submittals within the time period specified in
Appendix A, but review by or on behalf of Owner shall be only for conformance with the design concept of the Project and for compliance with this Agreement and shall not extend to means, methods, techniques, sequences, or procedures of
construction (except where a specific means, method, technique, sequence, or procedure of construction is indicated in or required by this Agreement). The review of a separate item as such shall not indicate approval of the item or the component in
which the item functions. Contractor shall give due consideration to Owners comments and make reasonable changes or corrections required by Owner, and resubmit as required to reflect such Owner changes or corrections. Upon re-submission,
Contractor shall direct specific attention in writing to revisions to Submittals. Owner will not have any responsibility or liability for the accuracy or completeness of any Submittal, or for any defect, deficiency thereof or for any failure of such
Submittal to comply with the requirements of this Agreement, notwithstanding any review or comment on its part.

2.14.4Applicable Electronic Format. Submittals by Contractor to Owner shall be made in accordance with Appendix A, the provisions of this Agreement, and, as applicable, in the Applicable Electronic Format.



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2.15 Separate Contractors and Activities By Owner.

2.15.1Separate Work. Owner will perform, either with its own forces or through other contractors and subcontractors, the activities
described as Work or services to be provided by or on behalf of Owner or the Separate Contractors and as work or services to be provided by Owner in Appendix A.

2.15.2Integration. Contractor shall use reasonable efforts to arrange the performance of the Work so that the Work and the work of
Owners forces or any of its Separate Contractors are properly coordinated, joined in an acceptable manner and performed in the proper sequence without any disruption or damage to the Work, or any work of Owners forces or its Separate
Contractors.

2.15.3Coordination. Contractor shall coordinate the activities of Contractors and its
Subcontractors forces on the Project Site with the activities of Owners forces and each of its Separate Contractors for the Owner activities defined in Appendix A such that the Work of Contractor and the work of such
Owners forces or Separate Contractors are performed in accordance with the Project Schedule; provided that Owner timely provides Contractor with the information reasonably requested in respect of activities of Owner and its Separate
Contractors, and that Owner gives Contractor timely and reasonable notice of activities that would require such coordination. For the avoidance of doubt, Contractor shall have final authority over the coordination of activities on the Project Site;
provided, however, that if Contractors exercise of such authority delays Owner in performing its obligation such that Owner cannot reasonably perform an obligation hereunder in accordance with the Project Schedule, Contractor
will not be entitled to a Change Order on account thereof nor relief from its performance obligations hereunder.

2.15.4Owner
Contractor Storage and Laydown. Contractor shall afford all of Owner Suppliers and Owners Separate Contractors reasonable opportunity for storage of their materials and equipment and for performance of their work on the Project Site. Owner
shall direct all Owner Suppliers and Separate Contractors to cooperate with Contractor and to avoid actions that could unreasonably interfere with the activities of Contractor. Owner will provide Contractor with the storage and laydown requirements
of Owners Separate Contractors.

2.16 Transportation Costs. Contractor shall arrange and pay for all transportation, inland
transit, storage and handling costs of every kind and nature in connection with the Work (other than as provided for in an Owner Contract)

2.17 Labor Matters. Contractor shall manage its labor workforce and its Subcontractors labor workforce at the Project Site in accordance with the Labor Plan. Subject to Article 11, Contractor shall be responsible
for managing all labor relations matters relating to the Work on or about the Project Site (including labor relations matters involving Owners Appendix A activities and Owners operating personnel who are subject to
Contractors supervision control and technical direction during start-up and testing).



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Contractor shall advise Owner promptly (and vice versa), in writing, of any actual, anticipated, or threatened labor dispute that might affect the completion
of the Work in accordance with the Project Schedule. Costs incurred by Contractor under this Section 2.17 for legal defense in matters not involving its own Personnel or its Subcontractors Personnel will be reimbursable by Owner if
Owner directs Contractor to undertake such legal action.

2.18 Discipline and Protection. Contractor shall enforce strict discipline
and good order among its employees, its Subcontractors employees, Owner Supplier employees and any other Persons carrying out portions of the Work on the Project Site and provide for the protection and maintenance of the Work and Owner
Equipment and Materials on the Project Site and of all Persons and property related thereto. Contractor shall at all times take reasonable and appropriate actions to prevent any unlawful or disorderly conduct by or amongst its employees and those
employees of Subcontractors and Owner Suppliers on the Project Site. Contractor shall not permit the employment, by it or its Subcontractors, of unfit Persons or Persons not skilled in tasks assigned to them. Owner shall do the same in respect of
its Separate Contractors who are performing work on the Project Site.

2.19 Security. Beginning on the date prior to the date of the
Full Notice to Proceed that Contractor begins Project Site mobilization, Contractor shall be responsible for and shall take precautions and measures as may be necessary to secure the Project Site at all hours, including evenings, holidays and
non-working hours; provided, however, that upon Substantial Completion, access to and security the Project will be the responsibility of Owner, and Contractor shall observe the requirements imposed by Owner, which shall be consistent
with Prudent Industry Practices. Contractor is not entitled to rely on security provided by Owner prior to the Substantial Completion Date. Contractor shall erect, maintain or undertake, as required by existing conditions and the performance of this
Agreement, all reasonable safeguards for safety and protection, including banners, lighting, CCTV monitoring, security patrols, controlled access, posting danger signs and other warnings against hazards, promulgating safety regulations, and
notifying Owner and users of nearby sites and utilities.

2.20 Project Site Fire Protection. Without limiting Contractors
obligations pursuant to Appendix A, beginning on the date that Contractor begins Project Site mobilization, Contractor shall be responsible for providing all fire protection services, including liaison with the local fire and emergency
authorities, necessary to safeguard and protect the Project Site until the earlier of (a) Phase I Substantial Completion with respect to the Phase I Portion of the Project, (b) Substantial Completion with respect to the Balance of the
Project, or (c) termination of this Agreement. Contractor shall provide a Project Site fire protection plan for Owners review and comment no later than 14 days following the Commencement Date. Contractor shall give due consideration to
Owners comments and modify the plan appropriately.





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2.21 Coordination and Transition.

2.21.1 Phase I Portion of the Project. At least 6 months prior to the Target Phase I Substantial Completion Date, Contractor shall deliver
to Owner a proposed plan that provides for the coordination of (a) Contractors access to and use of the Phase I Portion of the Project for performance of the balance of the Work necessary on the Phase I Portion of the Project consistent
with Section 6.4.1 and consistent with the right of Owner to operate the Phase I Portion of the Project in the ordinary course of business, and (b) the security forces, facilities and safety procedures of the Parties that will be in
effect until Substantial Completion. Contractor and Owner shall thereafter agree on the final plan no later than 3 months prior to the Target Phase I Substantial Completion Date. Such plan shall maintain the existing access gates to the Project but
separate parking for Owners administrative, operations and/or maintenance personnel, and other Personnel in connection with the business operations of Owner and/or the operations and maintenance of the Phase I Portion of the Project, as well
as plans for fencing or other methods of separating Phase I Portion of the Project operations and Balance of the Project construction areas, and after Substantial Completion, for separate access gates.

2.21.2Balance of the Project. At least 6 months prior to the Target Substantial Completion Date, Contractor shall deliver to Owner a
proposed plan that provides for coordination of (a) Contractors access and use of the Project Site for performance of the Work necessary after Substantial Completion consistent with Section 6.7.7 and consistent with the right
of Owner to operate the Project in the ordinary course of business, and (b) the security forces, facilities and safety procedures of the Parties that will be in effect for the remainder of the Term. Contractor and Owner shall thereafter agree
on the plan no later than one month prior to Substantial Completion. Such plan shall provide for separate access gates to the Project and separate parking for Owners administrative, operations and/or maintenance personnel, and other Personnel
entering the Project Site in connection with the business operations Owner and/or operations and maintenance of the Project.

2.22
Surplus Equipment and Materials. Any surplus Equipment or Materials at Final Completion that were not paid for as part of the Reimbursable Component shall be the property of Contractor and may be sold or otherwise disposed of by Contractor in
its sole discretion and for its own account. Any surplus Equipment or Materials at Final Completion that were paid for as part of the Reimbursable Component that Owner does not advise Contractor it wants to retain shall be sold by Contractor, and
the proceeds thereof (net of reasonable sales costs) shall, at Contractors option as reflected in a Notice to Owner, be either (a) promptly remitted to Owner and deducted from the Total Work Cost or (b) retained by Contractor with
such proceeds having no effect on the Total Work Cost.





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ARTICLE 3

OWNERS OBLIGATIONS

3.1 Project Site. In accordance with the Project Schedule,
beginning on the Commencement Date Owner shall make available, and provide and maintain access to, the Project Site as required by Contractor for the performance of the Work, including access to the portions of the Project Site required to effect
those interconnections of the Project to the Utility Facilities; provided, however, that Contractors access is subject to Owners (Owner Agents, and the Engineers, as appropriate) reasonable exercise of their
respective rights and the performance of their respective obligations under and in accordance with this Agreement, including (a) to inspect the Work; (b) to operate and maintain the Project on and after the Phase I Substantial Completion
Date or the Substantial Completion Date applicable to such Work, whether performed directly or pursuant to third party agreements; (c) to perform or cause to be performed the activities identified in Appendix A, subject to
Section 2.15; (d) to prepare for, in accordance with Prudent Industry Practices, the operation of the Project and related operations, subject to Section 2.21; and (e) to conduct such other activities and obligations
typically associated with an owner of real property, including compliance and communication with Governmental Authorities. Owner has disclosed the Project Site information set forth in Appendix J to Contractor.

3.2 Permits. Owner shall obtain and pay for the Owner Permits designated in Appendix D as Owners responsibility (Owner
Permits). Contractor shall reasonably cooperate with Owner by providing information needed by Owner in connection with Owners efforts to obtain the Owner Permits and once obtained Contractor shall maintain the Owner Permits. Nothing
herein shall be deemed to limit Contractors obligations with respect to the Environmental Compliance Requirement or any other any Performance Requirement.

3.3 Owner Insurance. Owner shall obtain and maintain the insurance coverages as described in the applicable portion of Appendix Q (Owner Insurance).

3.4 Owner Taxes.

3.4.1Payment of Taxes. Owner shall administer and pay Taxes properly imposed by any taxing authority on Owner or required to be collected or paid by Owner, including Taxes: (a) that constitute property taxes, real or personal, assessed on
the Equipment, Materials, the Project, and the Project Site, (b) that are measured by the sale of products or electricity from the Project, (c) upon services or labor provided by Owner (other than by Contractor or any Subcontractor) in
connection with the Project, and (d) upon the gross receipts (except taxes on gross receipts that are deemed to be Sales Taxes) or net income of Owner (collectively Owner Taxes).



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3.4.2Sales Taxes. With respect to Sales Taxes, Owner shall, in a timely manner as
reasonably required by Contractor in order to purchase items as necessary to comply with the Project Schedule: (a) furnish to Contractor all exemption certificates, information and reports required to be submitted to appropriate taxing
authorities in connection with Sales Tax exemptions or rebates necessary for Contractor to perform its obligations with respect to Sales Tax rebates and exemptions, and (b) reimburse Contractor in connection with an Application for Payment for
the full amount of Sales Taxes properly paid by Contractor in accordance with this Agreement (recognizing Contractors obligation to seek and obtain Sales Tax exemptions as described in Section 2.2.9); provided,
however, that it is expressly understood that the Fixed Component includes all Sales Tax for items that are not directly incorporated in the Work, such as Sales Tax on rental equipment and Sales Tax for subcontracted services included in the
Fixed Component. Contractor shall use commercially reasonable efforts to minimize Sales Taxes and cooperate with Owner in its efforts to minimize Sales Taxes.

3.5 Start-up Personnel. Owner shall provide operations and maintenance Personnel in accordance with Appendix A and the phase-in plan to be developed in accordance with Section 2.2.2.1 to
operate and maintain the Project with Contractors assistance during the Startup Period. Such Personnel will have the qualifications and experience required pursuant to Appendix A. Such phase-in plan may be subsequently adjusted by
agreement of the Parties; provided, however, that Contractor must give Notice thereof to Owner as soon as reasonably practicable but not less than 3 months in advance of any proposed adjustment. Scheduling of such Personnel shall be
undertaken by Owner and with due regard for minimizing overtime. Such Personnel shall be trained by Contractor and shall assist Contractor by performing normal operating, testing, check-out and maintenance duties during the Startup Period. If any of
the Personnel provided by Owner do not satisfy the criteria set forth in Appendix A, Contractor shall provide a detailed Notice describing any such deficiency to Owner as soon as practicable, and, for adequate cause stated, Owner shall
replace such Personnel for training by Contractor promptly under the circumstances. Until the Phase I Substantial Completion Date with respect to the Phase I Portion of the Project and the Substantial Completion Date with respect to the Balance of
the Project, Contractor shall be responsible for technical direction of Owners operations Personnel. The provision by Owner of such Personnel shall not relieve Contractor of its obligations under the Agreement.

3.6 Owner Site Manager and Owner Engineer. Owner shall designate by Notice to Contractor (a) a full-time Owner employee or consultant to
serve as Owners site manager (Owner Site Manager), and (b) the Owner Engineer. Owner may by Notice to Contractor change the Owner Site Manager or the Owner Engineer. The Owner Site Manager shall be Owners
representative who after the commencement of construction hereunder at the Project Site shall be located at the Project Site. The Owner Site Manager shall have authority to act on behalf of Owner with respect to day-to-day decisions in the ordinary
course of business; provided, however, that the Owner Site Manager has no authority to execute Change Orders or amend this Agreement.



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Further, the Owner Site Manager will be responsible for furnishing information on a timely basis as reasonably requested by Contractor that is required by
this Agreement to be provided by Owner to Contractor, and will have the authority to agree upon procedures for coordinating Owners efforts with those of Contractor. Neither the Owner Site Manager nor the Owner Engineer shall be Owners
Authorized Representative unless specifically appointed to such position by Owner. Contractor may rely upon the actions of the Owner Site Manager taken within the authority set forth in this Section 3.6.Any communication (including a
Notice) given to the Owner Site Manager shall be deemed to be given to Owner.

3.7 Interconnection.

3.7.1Out of Scope Interconnection Facilities and Utility Connections. Upon completion of the site preparation and grading activities by
Contractor with respect to that portion of the Project Site to be utilized for the Transmission Facilities, which activities shall be performed as part of the Work and in accordance with the Project Schedule and other applicable provisions of this
Agreement, Owner shall be responsible for the installation, operation and maintenance of the Transmission Facilities and for payment of all fees to be paid to Utility Facilities providers for interconnection of the Project. Owner is responsible for
ensuring the Transmission Facilities and the Utility Facilities, as set forth in Appendix A, are available in accordance with the Project Schedule. Prior to the date specified therefor in the Project Schedule, Owner shall cause the
Transmission Owner or other transmission service provider to take from the Project the net electricity generated during the Startup Period. The Project Schedule shall include the date when back-feed power will commence.

3.7.2Transmission Facilities. Contractor shall coordinate with the Transmission Owner with respect to the implementation and timely
completion of activities to be conducted under the Interconnection Agreement, including inspection and start-up of the Contractor Transmission Facilities. Contractor shall give Owner no less than 30 days prior initial Notice that Contractor is ready
for energization and backfeed power. Contractor shall coordinate the supply thereof. Contractor shall coordinate and arrange for any requirements for access to the Project by the Transmission Owner or its designees as required by the Interconnection
Agreement. Contractor shall cooperate with Owner, and cooperate and coordinate with the Transmission Owner and their respective designees in order to provide for the timely completion of the Contractor Transmission Facilities connection with these
interconnection activities.

3.8 Startup Period.

3.8.1Startup Period; Pre-Commercial Energy. The Startup Period for the Project means (a) with respect to the Phase I Portion of the Project, the period from the Phase I
Mechanical Completion Date until the Phase I Substantial Completion Date and



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(b) with respect to the Balance of the Project, the period from the Mechanical Completion Date until the Substantial Completion Date. Owner has all
right, title and interest to all revenue resulting from the activated carbon product and electricity generated (net of auxiliary loads) by the Project, and Contractor shall have no right to any such product or electricity or to the proceeds of the
sale of such. Contractor shall make reasonable efforts to maximize the production of activated carbon product and the production of electricity by the Project during the Startup Period consistent with Contractors obligations to perform the
Work on schedule and on budget.

3.8.2 Waste. Owner shall be responsible for the handling, transportation and placement of,
in accordance with all Applicable Legal Requirements, all coal waste and other wastes including ash and lime solids generated by the operation of the Project during the Startup Period, and made available by Contractor to Owner at the applicable
delivery point.

3.8.3Initial Fills. Contractor shall be responsible for providing initial fills of lubricants, chemical,
fuels, etc. of plant equipment to support start-up and initial operations. Contractor will invoice Owner on a cost reimbursable basis for initial fills.

3.9 Hazardous Substances. In addition to Project Site information referenced in Appendix J, Owner also shall disclose to Contractor, as information becomes available to Owner, the existence of
Hazardous Substances at the Project Site as to which Owner has actual knowledge. Subject to Section 2.2.13, Owner shall be and remain responsible for any Hazardous Substances that are brought onto the Project Site by Owner or any other
Person performing activities on behalf of Owner (other than Contractor, its Subcontractors or Owner Suppliers) or that exist on the Project Site prior to the Commencement Date or releases caused by Owner or any other Person acting on its behalf
(other than Contractor, its Subcontractors and Owner Suppliers) and not in accordance with Contractors direction (Owner Hazardous Substances), including any required Remediation and/or site restoration in connection
therewith. To the fullest extent permitted by Applicable Legal Requirements, Owner agrees to release, defend, indemnify and hold the Contractor Indemnitees harmless from and against all liability (except for any liability arising from the negligence
or intentional Release by such indemnified Persons (as set forth in Section 2.2.13.2)) arising out of Owner Hazardous Substances, or otherwise arising out of fulfilling Owners obligations under this Section 3.9, whether
through suits or causes of action in a court of law or claim, complaints or penalties arising out of a violation or alleged violation of Applicable Legal Requirements. If Contractor discovers or encounters any Owner Hazardous Substances, which under
Applicable Legal Requirements or Professional Standards would require Contractor to suspend Work to avoid injury to individuals or damage to property, then Contractor shall promptly give Notice to Owner and cease performance of the Work in and
around the affected area. Except as provided in Section 2.2.13.2, Contractor shall have no responsibility for the removal, treatment, transportation, disposal or Remediation of Owner Hazardous Substances.



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Contractor shall not have or exert any control over Owner or interfere with Owner or any Person acting on behalf of Owner in Owners performance of its
obligations or responsibilities in connection with the storage, transportation or disposal of any Owner Hazardous Substances. Contractor shall reasonably cooperate with Owner in connection with the Remediation by Owner of any Owner Hazardous
Substances identified at the Project Site; provided, however, that Contractor shall not be required to provide disposal services for Owner Hazardous Substances.

3.10 Compliance with Contractors Rules. On or before the Commencement Date, Contractor will provide to Owner a copy of its proposed written
rules regarding activities at the Project Site that are applicable to all Persons on the Project Site prior to Substantial Completion. Within 15 Business Days from receipt thereof, Owner will be entitled to provide its comments thereto. Contractor
shall give due consideration to and incorporate any reasonable comments of Owner and thereafter promptly provide Owner with a final copy of such rules. Owner and all Owner Personnel shall comply with such final written rules.

3.11 Performance of Owner Obligations. Owner shall perform its obligations under Article 3 and the applicable provisions of
Appendix A that appear on the Project Schedule on or before the date specified therefor as such dates may be adjusted in accordance with this Agreement.

3.12 Compliance with Applicable Legal Requirements. Owner shall comply with Applicable Legal Requirements in connection with the performance of its obligations hereunder and in connection with contracting for
work or services to be performed by its Separate Contractors related to the Project.

3.13 Owner Suppliers.

3.13.1Contract Execution. Owner is responsible for entering into the Owner Contracts; provided, however, that for future
Owner Contracts, Contractor shall provide the support contemplated by Appendix M. The Parties agree that the negotiation of certain future Owner Contracts may require cooperation of the Parties.

[RESERVED]

3.14 Discipline and Protection. Owner
shall at all times take reasonable and appropriate actions to prevent any unlawful or disorderly conduct by or amongst its employees and those employees of its Separate Contractors at the Project Site. Owner shall require that its Separate
Contractors not employ unfit individuals or assign individuals to tasks as to which they are inappropriately suited in connection with the performance of the activities of such Separate Contractors.



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ARTICLE 4

OWNERS RIGHT TO INSPECT, STOP AND RE-PERFORM WORK

4.1 Inspection. Owner and its
designees will have the right to have access to and inspect the Work, including Equipment and Materials, and to be present at all tests and inspections at any stage of completion on the Project Site. The participation in, or observation of, any such
inspections or testing by Owner and its designees (or any failure by Owner or its designees to participate in or observe such inspections and testing) will not be deemed to constitute a waiver of any of Contractors obligations under this
Agreement or be construed as an approval or acceptance of the Work. So long as Contractor provides reasonable advance Notice to Owner of a test or inspection (such Notice may be in the form of the identification of such test or inspection in the
Project Schedule, monthly progress report or other written Submittal to Owner but must be at least 5 Business Days prior to such test or inspection), then the failure of Owner or its designees to be present at such test or inspection will not
invalidate or otherwise adversely affect the conduct or results of such test or inspection. Owner or its designees exercising rights pursuant to this Section 4.1 shall not unreasonably interfere with Contractors performance of its
obligations hereunder.

4.2 Right to Reject and Re-Performance. Prior to the Warranty Period, if the Work is not in conformance with
the requirements of this Agreement (Defective Work), then Owner may give Contractor Notice of the Defective Work. If Owner provides Notice to Contractor that Owner requires a plan of correction for Defective Work, then Contractor
shall, within 7 Business Days after Owners Notice thereof, submit a plan of correction of the Defective Work to Owner for review and Contractor shall include in the plan of correction any reasonable comments to such plan proposed by Owner.
Contractor shall provide Notice to Owner of any modifications or supplements to the plan of correction reasonably implemented by Contractor. For purposes of this Agreement, Defect, Defects or
Defective describes Work that is not in conformance with the requirements of this Agreement.

4.3 Defects in Owner
Suppliers Scope. Prior to the Warranty Period, if either Party obtains knowledge of any defect or deficiency in any Owner Suppliers Scope, such Party shall give Notice thereof to the other Party, and Owner shall thereafter enforce
the provisions of the applicable Owner Contract and secure from the applicable Owner Supplier a plan of correction for such defect or deficiency. Upon Owners request, Contractor shall cooperate with Owner in such enforcement. Any legal
expenses so incurred by Contractor to cooperate with enforcement of the Owner Contract shall be a reimbursable expense. For the purposes of clarity, Contractor shall not be required nor entitled to initiate litigation to comply with its obligations
under this Section 4.3.

4.4 Right to Suspend Work for Convenience. Owner may, at any time and from time to time, by a
Notice, suspend (and later reinstate) all or any portion of the Work. Upon receipt of such Notice, Contractor shall immediately suspend its performance of such



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Work consistent with a safe and orderly shut-down of such Work. Either Party may terminate this Agreement, with such termination being handled under
Section 13.1 hereof, if (a) in the case of a suspension of all or substantially all of the Work by Owner for convenience after the Commencement Date, the suspension of Work exceeds 180 days in the aggregate, or (b) in the case of a
suspension resulting from the occurrence of a Change of Law occurring on or after the Commencement Date or an event of Force Majeure occurring on or after September 1, 2008, a single suspension of all or substantially all of the Work exceeds
270 days. In the case of either (a) or (b) above, Contractor may reassign Key Personnel engaged in Work at the Project Site if any such suspension of the Work exceeds 30 consecutive days. If Contractor reassigns Key Personnel in accordance
with this Section 4.4, it shall use reasonable efforts to reassemble the original Key Personnel at such time as the suspension of the Work is lifted. If the Project is suspended by Owner, Contractor shall be paid for all completed Work
prior to such suspension as follows:



| | (a) | Contractor shall be compensated for all Reimbursable Component Work performed up to date of suspension. For the Fixed Component, all Milestones achieved prior to suspension shall be
paid and, in the event that a suspension lasts for more than 30 consecutive days, Contractor shall be entitled to invoice Owner for an equitable proportion of the applicable Milestone Payment Schedule amounts due for partially-completed Milestones
pursuant to Appendix G.
| | --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (b) | All cost resulting from the suspension of Work including on-going costs and reasonable cost of work required to secure and protect partially-completed Work but excluding time value
of money, lost opportunity costs and the like, shall be paid via Change Order process (provided that Contractor shall not be required to provide Notice to Owner of the event giving rise to such Change Order) on a time and material basis or lump sum
if mutually agreed; provided, however, that to the extent reasonably possible, Contractor shall provide advanced written notice of such anticipated cost so Owner has the opportunity to avoid or mitigate said costs. Contractor shall use
reasonable efforts to minimize such extra costs arising from suspension, including consultation with Owner as to potential reassignment of Contractors personnel and/or suspension of the work of Subcontractors.
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

4.5 Uncovering Work. Without limiting Owners right to inspect the Work at any time on the Project Site, at each weekly construction meeting
at the Project Site, Contractor shall provide to Owner a copy of Contractors 3 week look-ahead schedule for Work to be performed on the Project Site. Owner shall promptly advise Contractor in writing of those items of Work on such look-ahead
schedule that it specifically wants to witness or inspect. For those items of Work that Owner advises Contractor that it wants to witness or inspect, Contractor shall keep Owner reasonably apprised of changes to the time and location of the
performance of such



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events. If Contractor performs any such item of Work at a time as to which Owner did not have Notice in accordance herewith, then, upon Owners written
request, given within 7 days of the date on which Owner was advised that such Work would be performed, Contractor shall expose, uncover or otherwise test such Work as Owner may reasonably require. If Owner fails to witness or inspect Work which it
had requested the opportunity to witness or inspect, Contractor shall be entitled to proceed with such Work and Owner shall not be entitled to enforce its rights under this Section 4.5, except upon issuance of a Change Order to
Contractor in accordance with Article 10. With respect to any other Work that is covered by Contractor, Contractor, at Owners written request, shall uncover, expose, or otherwise make available for observation, inspection, or
testing as Owner may require. If Work is Defective, Contractor shall (a) not be entitled to a Change Order on account thereof, including any cost or delay associated therewith, and (b) prepare a Recovery Plan if there is a delay in the
Project Schedule. If, however, such Work is not Defective, Owner shall issue Contractor a Change Order in accordance with Article 10 for the associated impact, as demonstrated by Contractor in a Change Order Request.

4.6 Right to Stop Work for Cause. Owner, by a Notice, may order Contractor to stop performance of that portion of the Work that reasonably appears
to Owner to cause or threaten to cause an imminent danger to life or damage to property. If it is reasonably determined by Owner that such activities of Contractor or Contractors Personnel caused or threatened to cause imminent danger to life
or damage to property, Contractor shall not be entitled to a Change Order for the associated impact. Owners right to stop Work under this Section 4.6 shall be without prejudice to any other right or remedy Owner may have under this
Agreement. Once the cause of the stop work order has been resolved by Contractor, Owner shall promptly direct Contractor to resume performance of the Work that had been stopped. In the event that any stop work order Notice provided hereunder is
subsequently determined to not have been properly issued in accordance with the provisions of this Section 4.6, Owner shall issue a Change Order to Contractor in accordance with Article 10, to reflect any cost or schedule
impact, as demonstrated by Contractor in a Change Order request.



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ARTICLE 5

CONSTRUCTION PRICE AND PAYMENT

5.1 Construction Price. The Construction Price shall consist
of 2 components: the Fixed Component and the Reimbursable Component. These two components of the Construction Price are as follows:

5.1.1Fixed Component. The Fixed Component is *. The Fixed Component addresses all components of the Work aside from the Work that is part of the Reimbursable Component pursuant to Section 5.1.2. The items to be
included in the Fixed Component include, without limitation, the following.



| |  |  | Home office services, including engineering
| | - |  | -------------------------------------------



| |  |  | Field supervision
| | - |  | -----------------



| |  |  | Temporary facilities
| | - |  | --------------------



| |  |  | Field office expenses
| | - |  | ---------------------



| |  |  | Construction equipment, including heavy lift cranes
| | - |  | ---------------------------------------------------



| |  |  | Tools and Consumables
| | - |  | ---------------------



| |  |  | Insurance required of Contractor
| | - |  | --------------------------------



| |  |  | Miscellaneous expenses
| | - |  | ----------------------



| |  |  | Contingency (on fixed components, quantities, and contract risk)
| | - |  | ----------------------------------------------------------------



| |  |  | Equipment (excepting Owner-provided Equipment)
| | - |  | ----------------------------------------------



| |  |  | Bulk Materials
| | - |  | --------------



| |  |  | Special tools for maintenance
| | - |  | -----------------------------



| |  |  | Contractor fee, administration and overhead
| | - |  | -------------------------------------------



| |  |  | Warranties
| | - |  | ----------

5.1.2Reimbursable Component. The estimated Reimbursable Component is *, as more specifically set forth in Appendix S, attached hereto. The Reimbursable Component consists of the costs described in Appendix N.
Prior to the date of the Full Notice to Proceed, Contractor shall develop and provide to Owner a detailed bottom up labor estimate, itemized by installed item of Equipment that includes for each item: (a) the expected man-hours, by
classification within each Craft Labor Category to install such Equipment, and (b) the average apprentice and journeyman rate for each Craft Labor Category (the Craft Labor Cost Estimate) which is attached as Appendix
K. As used above item includes each and every individual engineered product, all non-engineered



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procured items and each individual bulk material item used to install and interconnect each engineered and non-engineered item of Equipment, inclusive of all
support utility materials. Prior to the date of the Full Notice to Proceed, Contractor shall provide to Owner a detailed estimate of the Reimbursable Component (the Reimbursable Component Estimate). All labor other than on-site
Craft Labor is part of the Fixed Component. The Craft Labor Cost Estimate which is the basis for determining the estimated total Craft Labor Hours and the Craft Labor Hours target amount for the Work (the Craft Labor Hour Target)
is set forth in Appendix K. The wage rates for the Craft Labor Cost Estimate were developed by Contractor through a labor survey in the relevant region, and such survey shall be provided to Owner on or before the Commencement Date so that
Owner and Contractor can collectively agree on a wage rate strategy for attracting the necessary Craft Labor. Base Craft Labor rates and per diem as agreed upon by the Parties are set forth in Appendix K. As Work on the Project progresses, if
Contractor demonstrates to Owner that the stipulated Craft Wage Rates or per diem need to be increased to attract and retain qualified Craft Labor based upon market conditions or can be decreased without reducing productivity or availability of
labor, the new rates will be implemented and associated cost will be reimbursable, subject to the Craft Labor productivity reconciliation pursuant to Section 5.1.4.

5.1.3Payment of Fixed Component. The Fixed Component shall be paid to Contractor in monthly installments in accordance with the Milestone
Payment Schedule set forth in Appendix G for completed Milestones and upon delivery to Owner of Applications for Payment in accordance with the payment procedures set forth in this Agreement.

5.1.4Payment of the Reimbursable Component. Contractor shall invoice biweekly the Reimbursable Component costs, including costs for field
Craft Labor based upon reasonable estimates of Work projected to be performed in the next biweekly period, and Owner shall pay such invoices within 15 days of receipt. Such invoices shall include, at a minimum, certified payroll records (subject to
audit) verifying pay rates for the labor estimated to be required during the subsequent biweekly period. In addition, each invoice shall account for any overpayment or underpayment with respect to the previous biweekly period and the appropriate
adjustment shall be added to or deducted from the estimate (as the case may be). All adjustment reports regarding actual hours worked and applicable rates shall be supported with certified payroll records included with each invoice.

5.1.5Price and Other Agreement Adjustments due to Change Orders. All adjustments to the Fixed Component due to Change Orders shall be
calculated as follows:



| | a) | Schedule Changes.
| | -- | -----------------



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| | i. | The Fixed Component will be equitably adjusted for schedule delays to the extent caused by Owner. Contractor shall provide documentation of costs incurred for schedule extension or
schedule acceleration.
| | -- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | b) | Scope Changes.
| | -- | --------------

Changes initiated by Owner in the Work after the Full
Notice to Proceed shall generally be estimated and priced in the same manner as the original Fixed Component was developed consistent with lump sum contracting practices, and shall be handled as follows for the specified situation:.



| | i. | Unit Priced Work: Where the Fixed Component was based upon unit pricing such pricing shall be used for scope adjustments, subject to equitable market adjustments applicable
to such pricing for the quantity of unit purchased.
| | -- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | ii. | Engineering Scope: For Changes in the Work after the Full Notice to Proceed (other than as provided in (i) above) that increase the engineering scope, Contractor shall
provide Owner with a proposed fixed price developed in the same manner as the original Fixed Component was developed consistent with lump sum contracting practices but if the Parties cannot agree on the proposed lump sum, the cost of the Change
shall be equitably adjusted based upon stipulated hourly billable rates appended hereto as part of Appendix Rand Contractors documented hours worked.
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | iii. | Equipment Materials and Subcontracts: For Changes in the Work after the Full Notice to Proceed (other than as provided in (i) above) that increase the amount of
Equipment, Materials or Contractor Subcontract work to be procured by Contractor for the Project, the Fixed Component shall be adjusted based upon the actual increased cost of such Equipment and/or Material or Contractor Subcontract plus * percent
(*%) in respect of Contractors overhead and administrative costs to procure such Equipment, Materials or Contractor Subcontract work.
| | ---- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | c) | Craft Labor Increases. For Changes that increase the aggregate actual field Craft Labor Hours expended above the Craft Labor Hour Target (aggregate number for all Craft Labor
categories) such direct field Craft Labor Hours shall be reimbursed in accordance with the Reimbursable Component hereof. For such Changes that increase the amount of Craft Labor Hours above the Craft Labor Hour Target and for which the Fixed
Component has not otherwise been modified, adjustments to the Fixed Component to cover the additional management and overhead associated with the additional Craft Labor Hours shall be determined as follows:
| | -- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | i. | For up to the first *% of such increase above the total Craft Labor Hour Target, there shall be no additional charges under the Fixed Component in respect of profit or
administrative expense for management or other overhead associated with such additional Craft Labor Hours.
| | -- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| | ii. | For the portion of the actual Craft Labor Hours that exceeds the Craft Labor Hour Target, by greater than *% but less than or equal to *% of the total Craft Labor Hour Target, there
shall be an increase in the Fixed Component in an amount equal to *% of the amount of the Reimbursable Component for this incremental (above *%) increase in Craft Labor Hours.
| | --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | iii. | For the portion of the actual Craft Labor Hours that exceeds the Craft Labor Hour Target, by greater than *% of the total Craft Labor Hour Target, there shall be an increase in the
Fixed Component in an amount equal to *% of the amount of the Reimbursable Component for this incremental (above *%) increase in Craft Labor Hours.
| | ---- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | iv. | For the portion of the actual Craft Labor Hours that exceeds the Craft Labor Hour Target by greater than *% of the total Craft Labor Hour Target, there shall be an increase in the
Fixed Component in an amount equal to the amount of overhead and administrative markup generally applied in arriving at the Fixed Component (expressed as a percentage) of the amount of the Reimbursable Component for this incremental (above *%)
increase in Craft Labor Hours.
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

The foregoing notwithstanding, it is understood that any Craft Labor Hours resulting from
Contractors error, negligence, defects or deficiencies in engineering or in the performance of the Work (beyond that which is normal re-work activity customary in the industry in accordance with Prudent Industry Practices) shall not be
included in the calculation of actual Craft Labor Hours expended for determining if and to what extent the Craft Labor Hour Target has been exceeded but shall be separately identified in each Application for Payment for the Reimbursable Component.
Similarly, to the extent that the aggregate actual Craft Labor Hours for the Work included in the original Craft Labor Cost Estimate are below the Craft Labor Hours Target, such underrun shall be to Owners benefit and no adjustments shall be
made unless and until the entire underrun in Craft Labor Hours has first been exhausted and then Craft Labor Hours exceed *% of the Craft Labor Hour Target.

5.1.6Reconciliation of Actual Craft Labor Hours to Craft Labor Hour Target. In the event that field Craft Labor productivity for performing the Work is different than the Craft Labor Hour Target, such
variances shall be reconciled as follows:



| | a) | If actual Craft Labor Hours are within *% (over or under) of the Craft Labor Hour Target, Owner pays actual cost. Contractor shares no part of any overrun or underrun in labor hours
within this range.
| | -- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| | b) | If actual Craft Labor Hours overrun the Craft Labor Hour Target by more than *%, but not more than or equal to *% of the Craft Labor Hour Target, Owner and Contractor share the cost
of such excess labor hours above *% of the Craft Labor Hour Target equally.
| | -- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | c) | If actual Craft Labor Hours overrun the Craft Labor Hour Target by greater than *% of the Craft Labor Hour Target, Contractor pays all of the cost for labor hours in excess of *%
above the Craft Labor Hour Target.
| | -- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | d) | If actual Craft Labor Hours underrun the Craft Labor Hour Target by greater than five percent but less than or equal to *%, then Owner and Contractor equally share the underrun in
the cost of the saved labor hours to the extent greater than five percent below the Craft Labor Hour Target.
| | -- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | e) | If actual Craft Labor Hours underrun the Craft Labor Hour Target by greater than *% of the Craft Labor Hour Target, Contractor earns a bonus equal to the cost of the labor hours
saved by the underrun in excess of *% below the Craft Labor Hour Target.
| | -- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | f) | All adjustments for Craft Labor Hours overrun or underrun will be calculated based upon the average billable wage rate (wages, mark up, per diem) paid by Contractor during the
course of the Project; provided, however, that to the extent that the average billable wage hour paid by Contractor exceeds the average billable wage hour used in arriving at the Craft Labor Cost Estimate, such increased hourly costs
shall offset any bonus or cost savings share to be paid Contractor for underruns so that Owner shall only make payments to Contractor for labor hour underruns to the extent Owner has recognized real cost savings in the Craft Labor Cost Component.
| | -- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

The foregoing notwithstanding, it is understood that any expenditure of Craft Labor Hours resulting from Contractors
error, negligence, defects or deficiencies in engineering or in the performance of the Work (beyond that which is normal re-work activity customary in the industry in accordance with Prudent Industry Practices) shall not be included in the
calculation of actual field hours expended for determining if and to what extent the Craft Labor Hour Target has been exceeded and shall not be included in (or paid by Owner as part of) the Reimbursable Component, but shall be separately identified
and reflected in each Application for Payment for the Reimbursable Component.



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5.1.7[RESERVED].

5.1.8Applications for Payment.

5.1.8.1Fixed Component. Between the 1st and 5th day of each month after the month in which the Full Notice to Proceed occurs, Contractor shall submit to Owner an Application for Payment filled out and
signed by Contractor. Each Application for Payment for the Fixed Component shall describe (a) all Milestones completed, the sum of all prior payments in respect of the Fixed Component made by Owner to Contractor through the last day of the
prior month, (b) the amount of the Fixed Component owed to Contractor based upon the completed Milestones and the Milestone Payment Schedule attached hereto as Appendix G (the Milestone Payment Schedule) and an updated
Milestone Payment Schedule, reflecting payments made, (c) the Fixed Component amount for any agreed Change Order Work performed stating specifically the Work performed and the Change Order supporting the payment and (d) any amount due in
respect of the Fixed Component for which payment was withheld from an earlier payment and where the cause for such withholding no longer applies.

5.1.8.2Reimbursable Component. Together with each Application for
Payment for the Fixed Component submitted pursuant to Section 5.1.8.1 above and between the 15thand 20thday of each month after the month in which the Full Notice to Proceed occurs, Contractor shall submit to Owner an Application for Payment for the Reimbursable
Component filled out and signed by Contractor. Each Application for Payment for the Reimbursable Component shall describe (a) the amount of Craft Labor performed in the previous biweekly period including backup for the hours worked and wage
rates to include Craft Labor Hours expended to date, Craft Labor Hours expected to be expended during the estimate period included in such Application for Payment pursuant to Section 5.1.4, reconciliation of the actual field Craft Labor
performed versus the estimate therefor reflected in the prior biweekly or other applicable invoices and such other matters as required to verify and justify payments of the Reimbursable Component as described in Section 5.1.4,
(b) the Reimbursable Component amount of any agreed Change Order Work performed stating specifically the Work performed and the Change Order supporting the payment, (c) any other amount payable with respect to the Reimbursable Component
pursuant to this Agreement together with supporting documentation which reasonably demonstrates the cost of such Work and identifies the provisions of this Agreement which designate such costs as a Reimbursable Component, and (d) all Craft
Labor Hours resulting from error, negligence, defects or deficiencies in engineering or in the performance of the Work (beyond that which is normal re-work activity customary in the industry in accordance with Prudent Industry Practices) which shall
be separately identified but shall not be part of the Reimbursable Component or otherwise payable by Owner to Contractor.

5.1.9Progress Reports. Each Application for Payment for the Fixed Component submitted by Contractor must be supported by a monthly progress report in accordance with Appendix Afor the month preceding the Application for Payment.
Such



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progress report shall also include a good faith forecast of the estimated Fixed Component, and Reimbursable Component costs (to included expected Craft Labor
Hours to be devoted to rework or correcting Defective Work, if any) for the Work that Owner will be liable to pay to Contractor for the 90 day period commencing with the month following the month in which the Application for Payment is submitted. It
is recognized that forecasts are forward-looking projections and variances from such forecasts shall not affect Owners payment obligations hereunder.

5.1.10Lien Waivers. With each Application for Payment, Contractor shall deliver to Owner and any title company specified by Owner a waiver and release of Liens in the form of Appendix I-11,
duly executed and acknowledged by Contractor and those Subcontractors with an aggregate Contractor Subcontract value equal to or exceeding fifty thousand Dollars ($50,000.00) in order to assure an effective release of mechanics or
materialmens Liens in respect of the Work performed in the preceding month in accordance with the laws of the State of Louisiana. In addition, Contractor shall deliver to such title company a duly executed and acknowledged Contractors
statement satisfying all Applicable Legal Requirements identifying each of the Subcontractors, the value of such Contractor Subcontract, the amounts paid to date, and the balance of the amount due or to become due to each, and a statement that all
undisputed payments then due and owing have been made to such Subcontractors in accordance with the terms of the applicable Contractor Subcontract as of the date of such statement; provided, however, that Owner has made all undisputed
Construction Price payments for Work when due. Contractor shall also exercise the authority granted to it pursuant to Appendix M to obtain for Owner with each request for payment a waiver and release of Liens to the extent of such
payment, as applicable, in the form of Appendix I-11, duly executed and acknowledged by each Owner Supplier in order to assure an effective release of mechanics or materialmens Liens in respect of each item of Owner
Suppliers Scope in accordance with the laws of the State of Louisiana. If Contractor is not able to obtain such a waiver and release of Liens from any Owner Supplier, Contractor will not recommend approval of the request for payment by such
Owner Supplier and Owner will be under no obligation to pay the Owner Supplier in respect of such request for payment.

5.1.11Other Documentation. Each Application for Payment must be fully completed and also include the following in form and substance reasonably satisfactory to Owner:



| | (a) | a duly executed Contractors certification stating that it has reviewed all financial information contained in the Application for Payment as true, correct and complete;
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (b) | a copy of all invoices pursuant to which Contractor has paid Sales Taxes for which it seeks reimbursement;
| | --- | ----------------------------------------------------------------------------------------------------------



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| | (c) | information in such detail and with such backup so as to allow Owner to sign off on the reconciliation and verification of reimbursable costs and Change orders;
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (d) | such other information as may be reasonably required by Owner.
| | --- | --------------------------------------------------------------

5.1.12Failure to Comply. To the extent Contractor fails to comply with the foregoing requirements with respect to submission of documentation with the Application for Payment, Owner shall, after issuing a Notice to
Contractor, be entitled to withhold an equitable portion of the payment due to Contractor up to the full Application for Payment amount.

5.1.13Retainage.

5.1.13.1 Retainage; Retainage Letter of Credit. Contractor agrees that *%
of the Fixed Component shall be retained (the Retainage) by Owner out of each monthly payment for Work reflected in an Application for Payment of the Fixed Component. In lieu of the Retainage, Contractor may elect from time to time to
deliver to Owner an irrevocable bank letter of credit (the Retainage Letter of Credit) in the form of Appendix I-9, issued by a Qualified Security Provider and in a stated amount at least equal to the amount of the Retainage for which
such security is being provided as substitute security, as such amount increases based on the Milestones achieved by Contractor in the Milestone Payment Schedule (up to a maximum of *% of the Fixed Component). Increases in the maximum stated amount
may be made from time to time by the issuing Qualified Security Provider, at the request of Contractor; provided that advance Notice thereof is provided to Owner and the revised Retainage Letter of Credit is delivered to Owner promptly after such
modification. In no event shall the sum of the Retainage and any outstanding Retainage Letter of Credit exceed *% of that portion of the Fixed Component then paid to Contractor (with such retained amounts deemed paid to Contractor for purposes of
the foregoing *% calculation).

5.1.13.1Application of Retainage; Draws upon Retainage Letter of Credit.
Owner shall have the right to apply the Retainage so withheld to satisfy any payment obligation of Contractor under this Agreement that is not paid when due hereunder. The Retainage Letter of Credit shall provide for payment to Owner thereunder,
without right of objection of Contractor to satisfy any payment obligation of Contractor, under this Agreement that is not paid when due hereunder, but only as and to the extent that all Retainage other than the Retainage Letter of Credit has been
applied to pay such amount and a deficiency remains. Owner agrees to use reasonable efforts to deliver a copy of any demand made under the Retainage Letter of Credit to Contractor contemporaneously with the demand presented to the Retainage Letter
of Credit issuer; provided, however, that failure to so deliver such demand shall not delay, or create a right of objection to, any payment to be made under the Retainage Letter of Credit. Any amounts drawn under the Retainage Letter
of Credit shall be deposited into the fund or account in which other Retainage and/or amounts previously drawn under a Retainage Letter of Credit are maintained and used only as provided in this Agreement.





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5.1.13.2Release of Retainage, Retainage Letter of Credit. Upon the
occurrence of Substantial Completion and upon agreement by the Parties on the components, and monetary value corresponding to each component, of the final Punch List, and satisfactory completion of the Completed Reliability Test which demonstrates
satisfaction of the Reliability Requirement, the Retainage shall be reduced or, if applicable, Owner shall authorize the Retainage Letter of Credit issuer to reduce the stated amount of the Retainage Letter of Credit, in each case, to an amount
equal to the sum of (a) 200% of the value of the Punch List as determined by Owner in consultation with Contractor and (b) if Contractor is liable for any Buy Down Amount in respect of the Reliability Requirement pursuant to
Section 8.4.2.4, the full amount of Contractors liability pursuant to Section 8.4.2.4. This amount, and/or credit, as applicable, will be held by Owner until the Final Completion of the Work and shall be paid, or
released, as applicable to Contractor with the final payment pursuant to Section 5.5, and Owner shall return the Retainage Letter of Credit to Contractor within ten (10) Business Days of the Final Completion Date.

5.1.13.3Performance Requirements. If the Performance Test results upon which Substantial Completion is achieved demonstrate
satisfaction of the Minimum Performance Requirements, then no Retainage shall be released hereunder until all Buy Down Amounts payable pursuant to Section 8.4 have been paid to Owner.

5.1.14Construction Price Inclusive. The Parties agree that the Construction Price provided for in this Article 5 includes all
amounts payable to Contractor for full and satisfactory completion of the Work.

5.1.15Contingency Sharing Payment. On the
Final Completion Date, Contractor shall pay to Owner an amount equal to the Contingency Sharing Payment and deliver to Owner a statement calculating such Contingency Sharing Payment in reasonable detail. Owner may arrange for the audit, at
Owners expense by a third-party auditing firm reasonably acceptable to Contractor, of the Actual Fixed Costs and other items that are included in the calculation of the Contingency Sharing Payment to determine the accuracy of the Contingency
Sharing Payment. The Contractor shall provide the Owner with a monthly non-binding estimate of the contingency balance based on fixed costs of the Facility incurred at the time. Contingency Sharing Payment is that amount which is
equal to the lesser of (i) *% of $* or (ii) *% of the amount, if any, by which (A) the Fixed Component ($*), adjusted for Changes, minus profit ($*), adjusted for Changes, exceeds (B) the Actual Fixed Costs. Actual Fixed
Costs is an amount equal to the sum (without duplication of amounts) of (1) all amounts paid by Contractor in order to achieve Final Completion plus (2) all amounts incurred in respect of the Work by Contractor for administrative
costs and home office overhead of its Affiliates, plus (3) all liquidated damages and other amounts paid by Contractor to Owner hereunder, warranty payments, amounts paid by Contractor under



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indemnities hereunder; provided, however, that there shall be excluded from Actual Fixed Costs all Reimbursable Costs and costs that are otherwise
reimbursed under this Agreement (such as Force Majeure costs, but not including costs incurred under Change Orders), costs that are recovered from the proceeds of insurance or payments from third parties including Subcontractors, Contractors
income Taxes or corporate franchise Taxes, or profit of Contractor or its Affiliates. For purposes of determining Actual Fixed Costs, administrative costs and overhead and other similar amounts in respect of costs of Affiliates shall be limited to
amounts allocated to construction work by Contractor and its Affiliates uniformly across all of its construction work.

5.2 Owner
Supplier Payments. Invoicing for and payments to Owner Suppliers under Owner Contracts shall be handled by the Parties in accordance with Appendix M.

5.3 Owner Review. Without prejudicing Owners other rights under this Agreement, for purposes of determining the amount of payment to which Contractor is entitled in respect of an Application for
Payment, Owner shall promptly notify Contractor concerning any invoiced amount or portion thereof that is in dispute (including where Owner contends that there is a deficiency with respect to such Application for Payment and/or the accompanying
documentation) and of the basis for such Dispute as soon as reasonably practicable with the objective of allowing time for the Parties to resolve such Dispute prior to the date on which payment on the disputed matter would otherwise be due. It is
understood by Contractor that Owners determination under this Section 5.3 may be made in conjunction with the Financing Parties, and the approval by the Financing Engineer may be required prior to payment.

5.4 Payment Due Dates. Except with respect to those amounts which may have been disputed in good faith by Owner in accordance with
Section 5.3, Owner shall make full payment of the monthly amounts invoiced by Contractor pursuant to Section 5.1 such that payment is received by Contractor in immediately available funds by the last Business Day of the month
in which the Application for Payment was submitted, except as provided in Section 5.1.4.

5.5 Final Payment. Upon
Final Completion, Contractor shall submit a final Application for Payment and supporting documentation, which shall set forth all amounts due and remaining unpaid to it and otherwise complying with the requirements of this Agreement, accompanied by
(i) a full Lien waiver and release from Contractor that is applicable to all of the Work, conditioned solely on receipt of such final payment, and (ii) a full Lien release and waiver from each Subcontractor for all Work performed under a
Contractor Subcontract or Owner Contract with an aggregate value equal to or exceeding fifty thousand Dollars ($50,000.00), in each case, in the forms attached hereto as Appendix I-11. The final Application for Payment shall also include
release of all remaining Retainage that Owner is not entitled to retain pursuant to the terms of this Agreement.





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5.6 Withholding to Protect Owner from Loss.

5.6.1Withholding. Owner may, without prejudice to any other rights Owner may have hereunder, after issuing a Notice to Contractor, also
withhold all or any portion of any payment to such extent as may be necessary in Owners reasonable judgment to protect Owner from losses, costs, expenses or damages for which Contractor is liable due to:



| | (a) | unpaid overdue amounts due to Owner by Contractor under this Agreement; and
| | --- | ---------------------------------------------------------------------------



| | (b) | Contractor Liens (with respect to Liens filed by Subcontractors) for which, 20 days after having received knowledge thereof, Contractor has failed to remove the Contractor Lien or
provide a Contractor Lien Bond.
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

5.6.2Lien Title Indemnity. Notwithstanding Section 5.6.1, Owner
shall release any payments withheld because of any Lien if Contractor obtains a Contractor Lien Bond; provided, however, that other than compliance with its obligation to deliver a Contractor Lien Bond, the posting of such Contractor
Lien Bond does not relieve Contractor of any other obligations (including its indemnity obligations) under this Agreement.

5.7
Delinquent Payments. Payments not made when due will bear interest from the due date thereof until the date paid at the Late Payment Rate. For the avoidance of doubt, any portion of any payment that is disputed and not paid in accordance
with the provisions of this Agreement and subsequently determined to be payable on the original due date thereof will bear interest in accordance with the foregoing from the date such portion of the disputed amount was due (assuming there had been
no Dispute) until the date of actual payment.

5.8 Contractor Liens. Contractor shall cause each Contractor Lien to be
canceled or discharged of record or furnish Owner with a Contractor Lien Bond. If Contractor does not promptly satisfy such Contractor Lien or fails to provide Owner with a Contractor Lien Bond in lieu thereof, in any event within the period
specified in Section 5.6.1(b), then Owner may, after Notice to Contractor and expiration of 10 days after Contractors receipt of such notice, cure or release such Contractor Lien by payment of money or otherwise, and, if Owner
arranges a Contractor Lien Bond with respect to such Contractor Lien, Contractor shall reimburse Owner for the reasonable cost of arranging such Contractor Lien Bond within 30 days after a request therefor by Owner, if and to the extent that
Contractor was not justified in withholding the payment underlying such Lien.



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5.9 Forecasts. On or before the Commencement Date, Contractor shall deliver to Owner a cash flow
forecast covering the period from the date of the forecast through Final Completion in the format reasonably required by Owner. During the Term, Contractor shall thereafter update such forecast quarterly or at such earlier time when circumstances
materially differ from the immediately preceding cash flow forecast. It is recognized that forecasts are forward-looking projections and variances from such forecasts shall not affect Owners payment obligations hereunder.

5.10 Total Work Cost Bonus Amount. Upon Final Completion, if the Total Work Cost is less than the Target Total Work Cost, then Contractor shall be
entitled to a bonus in the amount of * percent (*%) of the difference between the Total Work Cost and the Target Total Work Cost (the Total Work Cost Bonus Amount).



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ARTICLE 6

COMPLETION AND ACCEPTANCE OF THE WORK

6.1 Phase I Mechanical Completion.

6.1.1Criteria for Phase I Mechanical Completion. Each of the following conditions must be met for Phase I Mechanical
Completion to occur:

6.1.1.1Contractor has performed or provided: (a) the design, engineering,
procurement, permitting (in respect of Contractor Permits only), construction and installation in accordance with this Agreement and manufacturers requirements of the Phase I Portion of the Project; and (b) all of the connections of all
such Equipment and Materials between and to other applicable Equipment and Materials as required by way of piping, wiring, controls, and safety systems, in each case, in connection with the Phase I Portion of the Project. In addition, Contractor
shall have assured that:



| | (i) | all such Equipment and related operating systems that comprise the Phase I Portion of the Project are individually cleaned, leak checked, lubricated and aligned in accordance with
Professional Standards;
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (ii) | all initial fills associated with the Phase I Portion of the Project have been completed;
| | ---- | -----------------------------------------------------------------------------------------



| | a. | all instruments associated with the Phase I Portion of the Project are calibrated and loop checked, and to the extent possible without operating the equipment or Project, the plant
control system associated with the Phase I Portion of the Project has been verified as fully operational and ready for startup;
| | -- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | b. | all electrical wiring associated with the Phase I Portion of the Project has been checked for continuity and proper termination, and meggered where applicable,
| | -- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (iii) | all relays associated with the Phase I Portion of the Project are set in their final configuration, pending operational confirmation and adjustment;
| | ----- | ----------------------------------------------------------------------------------------------------------------------------------------------------



| | (iv) | all Equipment associated with the Phase I Portion of the Project is checked out in accordance with Professional Standards and OEM requirements;
| | ---- | -----------------------------------------------------------------------------------------------------------------------------------------------



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| | (v) | all ground checks associated with the Phase I Portion of the Project are complete;
| | --- | ----------------------------------------------------------------------------------



| | (vi) | piping and pressure vessels associated with the Phase I Portion of the Project are hydro tested and flushed in accordance with Professional Standards or where not possible, pressure
tested using procedures prepared by Contractor and approved by Owner;
| | ---- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (vii) | all motor rotation checks associated with the Phase I Portion of the Project are complete;
| | ----- | ------------------------------------------------------------------------------------------



| | (viii) | all electrical devices (including the generator panels) associated with the Phase I Portion of the Project have been energized;
| | ------ | -------------------------------------------------------------------------------------------------------------------------------



| | (ix) | all checks required by the Transmission Owner associated with the Phase I Portion of the Project, if any, have been completed;
| | ---- | ------------------------------------------------------------------------------------------------------------------------------



| | (x) | all electrical circuits associated with the Phase I Portion of the Project have been checked to verify that such equipment and operating systems have been correctly installed;
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (xi) | all Equipment associated with the Phase I Portion of the Project is ready for initial operation of the Phase I Portion of the Project, and may be so operated, without damage thereto
or to any other property and without injury to any person;
| | ---- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (xii) | an initial Phase I Punch List has been provided to Owner by Contractor, and approved by Owner.
| | ----- | ----------------------------------------------------------------------------------------------

6.1.1.2Contractor has completed the Work necessary to cause the Phase I Portion of the Project to be capable of starting up
safely and in accordance with Applicable Legal Requirements, OEM requirements, and Prudent Industry Practices.

6.1.1.3Contractor has completed the training of Owner provided Personnel designated for operation and maintenance of the Phase I Portion of the Project, as required by Appendix A.

6.1.1.4A draft Phase I Portion of the Project O&M Manual, including vendor O&M Manuals related to the applicable MHF(s),
has been provided as required by Appendix A.

6.1.2Notice and Report of Phase I Mechanical Completion. When
Contractor determines that it has satisfied the conditions for Phase I Mechanical Completion, Contractor shall deliver written Notice of such determination (Notice of Phase I Mechanical Completion) to Owner in the form set forth
in Appendix I-4. The Notice of Phase I Mechanical Completion will contain a certification by Contractor that it has satisfied all of the conditions for Phase I Mechanical Completion pursuant to this Section 6.1 and
Appendix A.



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6.1.3Achievement of Phase I Mechanical Completion. Within 10 Business Days of receipt of
the Notice of Phase I Mechanical Completion by Owner, Owner shall inspect the Phase I Portion of the Project, and/or cause the Phase I Portion of the Project to be inspected by the Owner Engineer and/or Owner Agents, and by its other designees, and
Owner shall either: (a) deliver to Contractor a written acceptance of Contractors Notice of Phase I Mechanical Completion in the form set forth in Appendix I-3 (the Certificate of Phase I Mechanical
Completion), or (b) notify Contractor in writing that it disputes (or cannot confirm) Contractors certification that the conditions for Phase I Mechanical Completion have been met, stating with specificity the reasons therefor.
If Owner issues the Certificate of Phase I Mechanical Completion, the date of Owners receipt of the Contractors Notice of Phase I Mechanical Completion shall be deemed the Phase I Mechanical Completion Date. If Owner
notifies Contractor that it disputes satisfaction of the conditions for Phase I Mechanical Completion or cannot confirm Contractor satisfaction of the conditions, then Contractor shall either promptly undertake such action or Work as is necessary to
meet or verify such conditions and issue another Notice of Phase I Mechanical Completion to Owner or refer the matter to Dispute resolution in accordance with this Agreement. In the event Contractor prevails in the Dispute, the date of Owners
receipt of the then-applicable Notice of Phase I Mechanical Completion will be deemed the Phase I Mechanical Completion Date.

6.2 Mechanical Completion.

6.2.1Criteria for Mechanical Completion. Each of the following conditions must be
met for Mechanical Completion to occur:

6.2.1.1Phase I Mechanical Completion must have occurred
and with respect to the Balance of the Project, Contractor has performed or provided: (a) the design, engineering, procurement, permitting (in respect of Contractor Permits only), construction and installation in accordance with this Agreement
and manufacturers requirements for the Balance of the Project; and (b) all of the connections of all such Equipment and Materials between and to other applicable Equipment and Materials as required by way of piping, wiring, controls, and
safety systems, in each case, in connection with the Balance of the Project. In addition, Contractor shall have assured that:



| | (i) | all such Equipment and related operating systems that comprise the Balance of the Project are individually cleaned, leak checked, lubricated and aligned in accordance with
Professional Standards;
| | --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (ii) | all initial fills associated with the Balance of the Project have been completed;
| | ---- | ---------------------------------------------------------------------------------



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| | a. | all instruments associated with the Balance of the Project are calibrated and loop checked, and to the extent possible without operating the Equipment or Project, the plant control
system associated with the Balance of the Project has been verified as fully operational and ready for startup;
| | -- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | b. | all electrical wiring associated with the Balance of the Project has been checked for continuity and proper termination, and meggered where applicable,
| | -- | -------------------------------------------------------------------------------------------------------------------------------------------------------



| | (iii) | all relays associated with the Balance of the Project are set in their final configuration, pending operational confirmation and adjustment;
| | ----- | --------------------------------------------------------------------------------------------------------------------------------------------



| | (iv) | all Equipment associated with the Balance of the Project is checked out in accordance with Professional Standards and OEM requirements;
| | ---- | ---------------------------------------------------------------------------------------------------------------------------------------



| | (v) | all ground checks associated with the Balance of the Project are complete;
| | --- | --------------------------------------------------------------------------



| | (vi) | piping and pressure vessels associated with the Balance of the Project are hydro tested and flushed in accordance with Professional Standards or where not possible, pressure tested
using procedures prepared by Contractor and approved by Owner;
| | ---- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (vii) | all motor rotation checks associated with the Balance of the Project are complete;
| | ----- | ----------------------------------------------------------------------------------



| | (viii) | all electrical devices (including the generator panels) associated with the Balance of the Project have been energized;
| | ------ | -----------------------------------------------------------------------------------------------------------------------



| | (ix) | the medium and high voltage connections to and from the step-up transformer to the Transmission Facilities dead-end structure located as provided in Appendix A have
been completed, and all checks required by the utility associated with the Balance of the Project have been completed such that back-feed can be provided;
| | ---- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (x) | all electrical circuits associated with the Balance of the Project have been checked to verify that such equipment and operating systems have been correctly installed;
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (xi) | all Equipment associated with the Balance of the Project is ready for initial operation of the Balance of the Project, and may be so operated, without damage thereto or to any other
property and without injury to any person;
| | ---- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| | (xii) | the steam turbine is on turning gear and ready for commissioning and start-up;
| | ----- | ------------------------------------------------------------------------------



| | (xiii) | an initial Punch List relating to the Balance of the Project has been provided to Owner by Contractor, and approved by Owner.
| | ------ | -----------------------------------------------------------------------------------------------------------------------------

6.2.1.2Contractor has completed the Work necessary to cause the Balance of the Project to be capable of starting up safely and in
accordance with Applicable Legal Requirements, OEM requirements, and Prudent Industry Practices.

6.2.1.3Contractor
has completed the training of Owner provided Personnel designated for operation and maintenance of the Project, as required by Appendix A.

6.2.1.4A draft total O&M Manual, including vendor O&M Manuals, has been provided as required by Appendix A.

6.2.2Notice and Report of Mechanical Completion. When Contractor determines that it has satisfied the conditions for Mechanical Completion, Contractor shall deliver written Notice of such determination
(Notice of Mechanical Completion) to Owner in the form set forth in Appendix I-4. The Notice of Mechanical Completion will contain a certification by Contractor that it has satisfied all of the conditions for
Mechanical Completion pursuant to this Section 6.2.

6.2.3Achievement of Mechanical Completion. Within 10
Business Days of receipt of the Notice of Mechanical Completion by Owner, Owner shall inspect the Project, and/or cause the Project to be inspected by the Owner Engineer and/or Owner Agents, and by its other designees, and Owner shall either:
(a) deliver to Contractor a written acceptance of Contractors Notice of Mechanical Completion in the form set forth in Appendix I-3 (the Certificate of Mechanical Completion), or (b) notify Contractor
in writing that it disputes (or cannot confirm) Contractors certification that the conditions for Mechanical Completion have been met, stating with specificity the reasons therefor. If Owner issues the Certificate of Mechanical Completion, the
date of Owners receipt of Contractors Notice of Mechanical Completion shall be deemed the Mechanical Completion Date. If Owner notifies Contractor that it disputes satisfaction of the conditions for Mechanical
Completion or cannot confirm Contractor satisfaction of the conditions, then Contractor shall either promptly undertake such action or Work as is necessary to meet or verify such conditions and issue another Notice of Mechanical Completion to Owner
or refer the matter to Dispute resolution in accordance with this Agreement. In the event Contractor prevails in the Dispute, the date of Owners receipt of the then applicable Notice of Mechanical Completion will be deemed the
Mechanical Completion Date.



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6.3 Initial Synchronization. Contractor shall provide Owner with at least 30 days prior Notice of
the projected time or times it will attempt Initial Synchronization of the steam turbine-generator, and 48 hours prior verbal notice of the actual time or times it will attempt Initial Synchronization.

6.4 Phase I Substantial Completion.

6.4.1Criteria for Phase I Substantial Completion. Each of the following conditions must be met for Phase I Substantial Completion to occur:



| | (a) | Phase I Mechanical Completion has been achieved;
| | --- | ------------------------------------------------



| | (b) | the most recent Completed Phase I Performance Test demonstrates concurrent achievement of (i) the Phase I Activated Carbon Production Requirement, (ii) the Phase I
Activated Carbon Specification Requirement, (iii) the Phase I Environmental Compliance Requirement, and (iv) compliance with all Applicable Legal Requirements applicable to Contractor under this Agreement and necessary for the Phase I
Portion of the Project to be capable of operations in compliance therewith as applicable and in accordance with Appendix C;
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (c) | during the Completed Phase I Performance Test, (i) the Phase I Portion of the Project, its individual components, systems, subsystems and Equipment were not operated outside
their designed continuous rated limits, (ii) only the normal contingent or operating Personnel performing their anticipated normal operations and maintenance activities with respect to the Phase I Portion of the Project were required to operate
and maintain the Phase I Portion of the Project during the conduct of such Completed Phase I Performance Test and (iii) no temporary or special equipment that is not part of the Work was required to conduct or complete such Completed Phase I
Performance Test;
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (d) | there are no Liens (except those for which a Contractor Lien Bond has been provided in accordance with the terms of this Agreement) resulting from the actions or failure to act of
Contractor, its Personnel or any of the Owner Suppliers, other than Liens resulting from the failure of Owner to pay all amounts due to Contractor and/or Owner Suppliers in accordance with the terms of this Agreement;
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (e) | Contractor has provided to Owner special tools and spare parts identified by Owner after review of the special tools and supplier recommended spare parts list provided by Contractor
pursuant to Appendix A which are required in connection with the Phase I Portion of the Project. Special tools may be reconditioned subject to Owner approval;
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| | (f) | the draft Project O&M Manual with respect to the Phase I Portion of the Project and all other Submittals required to be submitted prior to or as a condition of Phase I
Substantial Completion have been provided (such draft must include all information and manuals necessary for Owner to operate and maintain the Phase I Portion of the Work in accordance with Prudent Industry Practices and the other requirements of
this Agreement);
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (g) | Contractor has completed all Work on or with respect to the Phase I Portion of the Project so that the Phase I Portion of the Project is capable of being operated in the normal
course of business in accordance with the operating procedures set forth in the draft Project O&M Manual with respect to the Phase I Portion of the Project and Prudent Industry Practices, except for any remaining items set forth in the Phase I
Punch List;
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (h) | Contractor and Owner have agreed on the components of the final Phase I Punch List (although there may be disagreement about the value of the components of Work reflected thereon);
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (i) | Contractor has obtained all Contractor Permits required for Phase I Substantial Completion; and
| | --- | -----------------------------------------------------------------------------------------------



| | (j) | Contractor has completed the training of Owner-provided Personnel required for the operation and maintenance of the Phase I Portion of the Project pursuant to
Appendix A.
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------

6.4.2Notice and Report of Phase I Substantial Completion. When Contractor determines
that it has satisfied the conditions for Phase I Substantial Completion in accordance with Section 6.4.1, Contractor shall deliver a Notice of such determination (Notice of Phase I Substantial Completion) to Owner in
the form set forth in Appendix I-4. The Notice of Phase I Substantial Completion will contain a certification by Contractor that it has satisfied all of the conditions for Phase I Substantial Completion pursuant to this
Section 6.4 and a report with sufficient detail (including preliminary laboratory results sufficient for a reasonable person to conclude that there is a high probability that the final laboratory results will confirm that the applicable
conditions of Phase I Substantial Completion have been achieved) to enable Owner to determine whether Contractor has achieved such requirements. Contractor shall provide to Owner final laboratory results promptly upon receipt, but in no case later
than thirty (30) days after the Completed Phase I Performance Test.

6.4.3Achievement of Phase I Substantial
Completion. Within 10 Business Days of receipt by Owner and the Owner Engineer of the Notice of Phase I Substantial Completion, Owner shall inspect the Phase I Portion of the Project, and/or cause the Phase I Portion of the Project to be
inspected by the Owner Agents, Owner Engineer and/or the Financing Engineer, and Owner shall either: (a) deliver to Contractor a written acceptance of Contractors Notice of Phase I Substantial Completion in the form set forth in



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Appendix I-3 (the Certificate of Phase I Substantial Completion), or (b) notify Contractor in writing that it disputes
Contractors certification that the conditions for Phase I Substantial Completion have been met, stating the reasons therefor or that Owner cannot confirm that such conditions have been satisfied. If Owner delivers the Certificate of Phase I
Substantial Completion, the date of the Certificate of Phase I Substantial Completion will be deemed the Phase I Substantial Completion Date;provided, however, for the purposes of any Contractor delay damages
for failing to cause the Phase I Substantial Completion Date to occur prior to the Required Phase I Substantial Completion Date, such damages shall cease to accrue on the date Owner receives the Notice of Phase I Substantial Completion upon which
the Phase I Substantial Completion Date is ultimately achieved. If Owner notifies Contractor that it disputes satisfaction of the conditions for Phase I Substantial Completion or cannot verify such satisfaction, then Contractor shall either promptly
undertake such action or Work as is necessary to meet such conditions or verify satisfaction of such conditions and issue another Notice of Phase I Substantial Completion to Owner or refer the matter to dispute resolution in accordance with this
Agreement. In the event Contractor prevails in the Dispute, the date of Owners receipt of the then applicable Notice of Phase I Substantial Completion will be deemed the Phase I Substantial Completion Date.

If Owner fails to respond to a Certificate of Phase I Substantial Completion within such 10 Business Day period and subsequently disputes that Phase I
Substantial Completion has been achieved, Owner shall waive any Late Phase I Substantial Completion Damages, if any, that would have otherwise accrued for the number of days equal to the number of days by which Owners response was delayed
beyond the 10 Business Day period.

6.4.4Care, Custody and Control During Dispute Resolution Regarding Phase I Substantial
Completion. In the event of a Dispute regarding whether Phase I Substantial Completion has been achieved, Owner may elect to either take care, custody and control of the Phase I Portion of the Project or have Contractor retain care, custody and
control of the Phase I Portion of the Project. If the Dispute is resolved in favor of Contractor determining that Phase I Substantial Completion was achieved and Owner has elected to have Contractor retain care, custody and control of the Phase I
Portion of the Project, then Phase I Substantial Completion will be deemed to have occurred on the date on which Owner received Contractors then applicable Notice of Phase I Substantial Completion; provided, however, that
turnover of the care, custody and control of the Phase I Portion of the Project to Owner will occur on the Business Day following the day on which the Dispute is resolved. If the Dispute is resolved in favor of Owner, Contractor shall
(i) provide Owner with a Recovery Plan for achievement of Phase I Substantial Completion, and (ii) if Owner has taken care, custody and control of the Phase I Portion of the Project, return care, custody and control of all or the
incomplete portions of the Phase I Portion of the Project, in Owners discretion, to Contractor until it satisfies the conditions for Phase I Substantial



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Completion and Owner issues the Certificate of Phase I Substantial Completion in accordance with Section 6.4.3; provided, however,
that prior to the return of care, custody and control of the Phase I Portion of the Project to Contractor, Owner shall perform all repairs, replacements or refurbishments required to return the Phase I Portion of the Project to be returned to
Contractor to its condition at the time of turnover thereof to Owner, excepting only ordinary wear and tear.

6.5 Creation of Phase I
Punch List. When Contractor believes that a Phase I Portion of the Project system is ready for commissioning and startup, Contractor shall prepare and deliver to Owner an initial list setting forth (a) all those certain minor,
non-safety items that do not impact the performance (including reliability, activated carbon output, operability, safety or mechanical or electrical integrity) of the Phase I Portion of the Project or compliance with Applicable Legal Requirements,
including Permits, and which remain to be performed to complete the Work related to the Phase I Portion of the Project, (b) the proposed time limits within which Contractor will complete such remaining Work, and (c) Contractors plan
to complete such Work on or before the Target Substantial Completion Date. Upon its receipt of such list, Owner shall review the same and notify Contractor of any proposed revisions thereto. Such list shall be subject to additions and deletions as
systems are added or completed, or as defects are identified by the Parties. Owners Authorized Representative and Contractors Authorized Representative shall then meet, consult in good faith and, prior to the Phase I Substantial
Completion Date, agree upon the final list and plan, including the approved time limits within which Contractor shall perform such remaining Work and the value of the items of Work described therein (the Phase I Punch List). Once
the items on the Phase I Punch List have been identified, Contractor shall promptly begin working on the items thereon. The plan for completing the Work specified in the Phase I Punch List may be amended by Contractor at any time prior to
Substantial Completion upon Notice to Owner to reflect the progress of completing such Work; provided, however, that any such amendment to the plan must reasonably provide for the completion of all such Work by the Target Substantial
Completion Date. The review and comment by Owner or its representatives of any matter relating to the Phase I Punch List will not relieve Contractor of its obligations under this Agreement.

6.6 Transfer of Possession and Control of the Phase I Portion of the Project to Owner. On or before the Phase I Substantial Completion Date,
Contractor and Owner shall agree upon a schedule of the dates and times, if any, when Contractor will require a reduced operation or complete shut down of the Phase I Portion of the Project or the imposition of operating restrictions on the Phase I
Portion of the Project in order to complete the Work remaining on the Phase I Portion of the Project under this Agreement; provided, however, that (a) such schedule shall provide for no more than 10 days of reduced operation and
no more than 5 days of complete shutdown of the Phase I Portion of the Project and (b) such schedule will provide for such reduced operation or complete shutdown, or the imposition of operating restrictions on, the Phase I Portion of the
Project only during a scheduled outage, if any, so as to



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accommodate Owners reliance on the activated carbon from the Phase I Portion of the Project. Subject to Section 6.4.4, on the Phase I
Substantial Completion Date or the date of termination of this Agreement, if earlier, Owner shall take and thereafter be solely responsible for the care, custody, control, operation, and maintenance of the Phase I Portion of the Project. Following
transfer of possession and control of the Phase I Portion of the Project to Owner, Contractor (and its Subcontractors and the Owner Suppliers) will have reasonable access to the Phase I Portion of the Project consistent with the schedule established
in accordance with, and the other requirements of, this Section 6.6 and the cooperation of Owner as necessary for Contractor to complete any Work still remaining to be performed hereunder, including the Phase I Punch List items.
Following issuance of the Certificate of Phase I Substantial Completion to Owner, Contractor shall comply with health, safety and security rules of Owner supplied reasonably in advance (including permit-to-work procedures and requirements), which
will be consistent with Prudent Industry Practices, regarding activities at the Phase I Portion of the Project and the associated portion of the Project Site so transferred and shall coordinate its activities at the Phase I Portion of the Project
and the associated portion of the Project Site with any other Person performing work, operation, maintenance or other activities at such location.

6.7 Substantial Completion.

6.7.1Preliminary Repairs, Replacements and Refurbishments. Between the
Phase I Substantial Completion Date and the conduct of the Performance Tests, Owner shall cause the Phase I Portion of the Project to be operated and maintained in accordance with (a) the O&M Manual delivered to Owner pursuant to
Section 6.4.1(f), (b) Prudent Industry Practices and (c) Applicable Legal Requirements (collectively, the Phase I Operating Requirements). At least 30 days prior to the date Contractor proposes to conduct the
Performance Tests for Substantial Completion, Contractor shall provide Notice to Owner of all repairs, replacements or refurbishments required by the Phase I Operating Requirements that have not been performed and that are required in order to
return the Phase I Portion of the Project to its condition at the time of turnover thereof to Owner upon occurrence of Phase I Substantial Completion (excepting only ordinary wear and tear). In the event of any disagreement between Owner and
Contractor with respect to these requirements, such dispute shall be resolved by the decision of the Financing Engineer; provided that any reasonable repairs, replacements or refurbishments required by Contractor shall be made. All repairs
and replacements required by this Section 6.7.1 shall be properly performed and completed within a reasonable time prior to the commencement of the Performance Tests. If Owners performance of its obligations under this Section
delays the conduct of the Performance Test by Contractor beyond the date Contractor would have otherwise conducted such Performance Test as reflected in its Notice delivered pursuant to Section 6.7.3, then Contractor shall be relieved of
liability for any delay or associated delay liquidated damages resulting from such Owner-caused delay and the Project Schedule shall be adjusted on a day for day basis to account for such delay.





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6.7.2Substantial Completion. Each of the following conditions must be met for
Substantial Completion to occur:



| | (a) | Mechanical Completion and Phase I Substantial Completion have been achieved;
| | --- | ----------------------------------------------------------------------------



| | (b) | the most recent Completed Performance Test demonstrates concurrent achievement of (i) the Activated Carbon Production Requirement (or the Minimum Carbon Capacity
Generation), (ii) the Activated Carbon Specification Requirement, (iii) the Lime Consumption Requirement (or the Maximum Lime Consumption Requirement), (iv) the Net Electrical Output Requirement (or the Minimum Net Electrical Output
Requirement), (v) the Environmental Compliance Requirement and (vi) compliance with all Applicable Legal Requirements applicable to Contractor under this Agreement and necessary for the Project to be capable of operations in compliance
therewith as applicable and in accordance with Appendix C,all as more particularly set forth in Appendix C;
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (c) | during the Completed Performance Test, (i) the Project, its individual components, systems, subsystem and Equipment were not operated outside their designed continuous rated
limits, (ii) only the normal contingent or operating Personnel performing their anticipated normal operations and maintenance activities with respect to the Project were required to operate and maintain the Project during the conduct of such
Completed Performance Test and (iii) no temporary or special equipment that is not part of the Work was required to conduct or complete such Completed Performance Test;
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (d) | there are no Liens (except those for which a Contractor Lien Bond has been provided in accordance with the terms of this Agreement) resulting from the actions or failure to act of
Contractor, its Personnel or any of the Owner Suppliers, other than Liens resulting from the failure of Owner to pay all amounts due to Contractor and/or Owner Suppliers in accordance with the terms of this Agreement;
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (e) | Contractor has provided to Owner special tools and spare parts identified by Owner after review of the special tools and supplier recommended spare parts list provided by Contractor
pursuant to Appendix A which are required in connection with the Project. Special tools may be reconditioned subject to Owner approval;
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| | (f) | the substantially final Project O&M Manual with respect to the Project and all other Submittals required to be submitted prior to or as a condition of Substantial Completion
have been provided.
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (g) | Contractor has completed all Work on or with respect to the Project so that the Project is capable of being operated in the normal course of business in accordance with the
operating procedures set forth in the Project operations and the Project and Prudent Industry Practices, except for any remaining items set forth in the Punch List;
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (h) | Contractor has obtained all Contractor Permits required for Substantial Completion; and
| | --- | ---------------------------------------------------------------------------------------



| | (i) | Contractor has completed the training of Owner-provided personnel required for the operation and maintenance of the Project pursuant to Appendix A.
| | --- | ---------------------------------------------------------------------------------------------------------------------------------------------------

6.7.3Notice and Report of Substantial Completion. When Contractor determines that it has satisfied the
conditions for Substantial Completion in accordance with Section 6.7.2, Contractor shall deliver a Notice of such determination (Notice of Substantial Completion) to Owner in the form set forth in
Appendix I-4. The Notice of Substantial Completion will contain a certification by Contractor that it has satisfied all of the conditions for Substantial Completion pursuant to this Section 6.7 and a report with sufficient
detail (including preliminary laboratory results sufficient for a reasonable person to conclude that there is a high probability that the final laboratory results will confirm that the applicable conditions of Substantial Completion have been
achieved) to enable Owner to determine whether Contractor has achieved such requirements. Contractor shall provide to Owner final laboratory results promptly upon receipt, but in no case later than thirty (30) days after the Completed
Performance Test.

6.7.4Achievement of Substantial Completion. Within 10 Business Days of receipt by Owner and the Owner
Engineer of the Notice of Substantial Completion, Owner shall inspect the Project, and/or cause the Project to be inspected by the Owner Agents, Owner Engineer and/or the Financing Engineer, and Owner shall either: (a) deliver to Contractor a
written acceptance of Contractors Notice of Substantial Completion in the form set forth in Appendix I-3 (the Certificate of Substantial Completion), or (b) notify Contractor in writing that it disputes
Contractors certification that the conditions for Substantial Completion have been met, stating the reasons therefor or cannot confirm that such conditions have been satisfied. If Owner delivers the Certificate of Substantial Completion, the
date of the Certificate of Substantial Completion will be deemed the Substantial Completion Date; provided, however, that for the purposes of any Contractor delay damages for failing to cause the Substantial
Completion Date to occur prior to the Required Substantial Completion Date, such damages shall cease to accrue on the date Owner receives the Notice of Substantial Completion upon which the Substantial Completion Date is ultimately achieved. If
Owner notifies Contractor that it disputes



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satisfaction of the conditions for Substantial Completion or cannot verify such satisfaction, then Contractor shall either promptly undertake such action or
Work as is necessary to meet such conditions or verify satisfaction of such conditions and issue another Notice of Substantial Completion to Owner or refer the matter to dispute resolution in accordance with this Agreement. In the event Contractor
prevails in the Dispute, the date of Owners receipt of the then applicable Notice of Substantial Completion will be deemed the Substantial Completion Date.

If Owner fails to respond to a Certificate of Substantial Completion within such 10 Business Day period and subsequently disputes that Substantial Completion has been achieved, Owner shall waive any Late Substantial
Completion Damages, if any, that would have otherwise accrued for the number of days equal to the number of days by which Owners response was delayed.

Notwithstanding the foregoing, if Contractor is ready, willing and able to perform the Performance Tests and has provided its Notice of such intent pursuant to Section 6.4.2 but is prevented from
conducting the Performance Tests for a period of 180 days due to the failure to complete construction of the Multi Hearth Furnaces, then as of the 181st day of such delay Contractor shall be deemed to have passed the Performance Tests as of the date
of Owners receipt of such Notice and shall thereafter proceed to achieve Final Completion; provided, however, that notwithstanding the foregoing, Contractor shall retain, and be deemed to have retained, care, custody and control
of the Project during such period of delay.

6.7.5Care, Custody and Control During Dispute Resolution Regarding Substantial
Completion. In the event of a Dispute regarding whether Substantial Completion has been achieved, Owner may elect to either take care, custody and control of the entire Project or have Contractor retain care, custody and control of the Balance
of the Project. If the Dispute is resolved in favor of Contractor determining that Substantial Completion was achieved and Owner has elected to have Contractor retain care, custody and control of the Balance of the Project, then Substantial
Completion will be deemed to have occurred on the date on which Owner received Contractors then applicable Notice of Substantial Completion; provided, however, that turnover of the care, custody and control of the Balance of the
Project to Owner will occur on the Business Day following the day on which the Dispute is resolved. If the Dispute is resolved in favor of Owner, Contractor shall (i) provide Owner with a Recovery Plan for achievement of Substantial Completion,
and (ii) if Owner has taken care, custody and control of the entire Project, return care, custody and control of all or the incomplete portions of the Balance of the Project, in Owners discretion, to Contractor until it satisfies the
conditions for Substantial Completion and Owner issues the Certificate of Substantial Completion in accordance with Section 6.7.3; provided, however, that prior to the return of care, custody and control of the Balance of
the Project to Contractor, Owner shall perform all repairs, replacements or refurbishments required to return the Balance of the Project to be returned to Contractor to its condition at the time of turnover thereof to Owner, excepting only ordinary
wear and tear.





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6.7.6Project Punch List. Prior to Substantial Completion, Contractor shall prepare and
deliver to Owner an initial list setting forth (a) all those certain minor, non-safety items that do not impact the performance (including reliability, activated carbon output, operability, safety or mechanical or electrical integrity) of the
Project or compliance with Applicable Legal Requirements, including Permits, and which remain to be performed to complete the Work related to the Project, (b) the proposed time limits within which Contractor will complete such remaining Work,
and (c) Contractors plan to complete such Work on or before the Final Completion Date. Upon its receipt of such list, Owner shall review the same and notify Contractor of any proposed revisions thereto. Such list shall be subject to
additions and deletions as systems are added or completed, or as defects are identified by the Parties. Owners Authorized Representative and Contractors Authorized Representative shall then meet, consult in good faith and, prior to the
Substantial Completion Date, agree upon the final list and plan, including the approved time limits within which Contractor shall perform such remaining Work and the value of the items of Work described therein (the Punch List).
Once the items on the Punch List have been identified, Contractor shall promptly begin working on the items thereon. The plan for completing the Work specified in the Punch List may be amended by Contractor at any time prior to Final Completion upon
Notice to Owner to reflect the progress of completing such Work; provided, however, any such amendment to the plan must reasonably provide for the completion of all such Work by the Final Completion Date. The review and comment by
Owner or its representatives of any matter relating to the Punch List will not relieve Contractor of its obligations under this Agreement.

6.7.7Possession and Control. On or before the Substantial Completion Date, Contractor and Owner shall agree upon a schedule of the dates and times, if any, when Contractor will require a partial or complete shut down of the
Project or the imposition of operating restrictions on the Project in order to complete the Work remaining on the Project under this Agreement; provided, however, that (a) such schedule shall provide for no more than 5 days of
partial or complete shutdown of, or imposition of operating restrictions on, the Project, (b) such schedule will provide for such partial or complete shutdown of, or the imposition of operating restrictions on, the Project only during a
scheduled outage, if any, so as to accommodate Owners reliance on the activated carbon from the Project and (c) to the extent permitted by Applicable Legal Requirements, during any such period of partial or complete shut down of the
Project, Contractor shall maintain, or cause to be maintained, the natural gas connection to the MHFs provided as part of the Work to avoid a Contractor-caused interruption in the natural gas supply necessary to maintain the minimum temperature
within each MHF as required by the manufacturer to avoid damage to the refractory and other components of the MHF due to temperature loss. Subject to Section 6.7.5, on the Substantial Completion Date or the date of termination of this
Agreement, if earlier, Owner shall



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take and thereafter be solely responsible for the care, custody, control, operation, and maintenance of the Project. Following transfer of possession and
control of the Project to Owner, Contractor (and its Subcontractors and the Owner Suppliers) will have reasonable access to the Project consistent with the schedule established in accordance with, and the other requirements of, this
Section 6.7 and the cooperation of Owner as necessary for Contractor to complete any Work still remaining to be performed hereunder, including the Punch List items. Following issuance of the Certificate of Substantial Completion to
Owner, Contractor shall comply with health, safety and security rules of Owner supplied reasonably in advance (including permit-to-work procedures and requirements), which will be consistent with Prudent Industry Practices, regarding activities at
the Project and the associated portion of the Project Site so transferred and shall coordinate its activities at the Project and the associated portion of the Project Site with any other Person performing work, operation, maintenance or other
activities at such location.

6.7.8Reliability Test.

6.7.8.1Notice of Commencement; Completed Reliability Test. Within 30 days after Substantial Completion, Contractor shall
perform an * day test of the operations of the Project conducted in accordance with the applicable protocols and guidelines set forth in Appendix C (the Reliability Test). Contractor shall give Owner at least 10 days
advance Notice before the commencement of the Reliability Test. After Contractor has completed the Reliability Test demonstrating all of the performance requirements set forth in Appendix C necessary to achieve at least the Minimum
Reliability Requirement, it shall give Notice to Owner and the Owner Engineer that it nominates such Reliability Test as a Completed Reliability Test. Such Notice will be accompanied by a preliminary test report for such Completed
Reliability Test as soon as reasonably practicable but in no event more than 24 hours after the completion of such Completed Reliability Test (or as soon thereafter as such reports are first available to Contractor) providing a summary of the
Reliability Test on which it is based and including all raw data taken during such Reliability Test, and a final test report as soon thereafter as possible. A final Completed Reliability Test report must be delivered to Owner in accordance with
Appendix C. Contractor shall include sufficient results of testing in the preliminary test report to allow Owner to reasonably determine that there is a high probability that the final test results will confirm that at least the Minimum
Reliability Requirement has been achieved. As soon as practicable, but in any event within 10 Business Days after receipt of Notice by Owner and the Owner Engineer, Owner shall give Notice to Contractor either concurring with, indication it cannot
confirm concurrence, or rejecting the Completed Reliability Test report and stating its reasons for such Notice, as the case may be. Such procedure shall be repeated until Contractor submits a Notice demonstrating Project performance necessary to
achieve at least the Minimum Reliability Requirement. Subject to Article 17, if Contractors Notice of a Completed Reliability Test is rejected by Owner, such test shall not constitute a Completed Reliability Test.





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6.7.8.2Reliability Requirement; Minimum Performance. As a condition
precedent to Final Completion, Contractor shall perform the Work with the objective that the Project, under normal operating conditions as prescribed in the O&M Manual, can be reliably operated in accordance with the Reliability
Requirement as defined in Appendix C (the Reliability Requirement); provided, however, that Contractor shall demonstrate, at a minimum, reliable operation of the Project at * percent (*%) of such level
(the Minimum Reliability Requirement). Contractor shall pay Owner the Buy Down Amount in respect of failure to achieve the full Reliability Requirement as provided in Section 8.4.

6.7.8.3Increased Throughput Bonus. If during a 24 hour period during the Completed Reliability Test or a different 24 hour
period occurring prior to Final Completion, Contractor operates the Project under the Reliability Test conditions and during such 24 hour period demonstrates that the Project can produce, on a rolling average basis, activated carbon product that
satisfies the Activated Carbon Production Requirement and the Activated Carbon Specification Requirement at a rate greater than or equal to an aggregate average of * tons per day per MHF across all four (4) MHFs, while continuing to achieve the
Reliability Requirement, then Contractor will earn a bonus equal to $* and an additional $* for each additional whole ton per day produced above the aggregate average of * tons per day per MHF across all four (4) MHFs, up to an average of *
tons per day (the Increased Throughput Bonus); provided, however, that during such twenty-four (24) hour period, no MHF may produce less than * tons per day (and if any MHF falls below this minimum amount, no
Increased Throughput Bonus can be earned as a result of such Reliability Test); and provided further, that no production above * tons per day per MHF shall be included in the production calculation; and provided further, that for
purposes of earning the Increased Throughput Bonus the full Project performance (including the Multi Hearth Furnaces) shall be included in determining entitlement and Contractor shall not be entitled to relief, credit or adjustment based on
performance failures or other performance problems due in whole or in any part of the Project provided under any Owner Contract or which is otherwise part of Owner Suppliers Scope, it being the intent of the Parties that such bonus shall only
be earned if the complete Project demonstrates such increased throughput. Contractor shall give Owner at least four (4) hours prior Notice of the 24 hour period during which the Project will be operated under Reliability Test conditions
for purposes of this Section.



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6.8 Final Completion.

6.8.1Criteria for Final Completion of the Project. Each of the following conditions must be met for Final Completion to
occur:



| | (a) | the Substantial Completion Date has occurred;
| | --- | ---------------------------------------------



| | (b) | the Completed Reliability Test demonstrates that the Reliability Requirement (or the Minimum Reliability Requirement) has been achieved in accordance with the requirements of
Appendix C and Applicable Legal Requirements;
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (c) | all Late Phase I Substantial Completion Damages, Late Substantial Completion Damages, and Buy Down Amounts which have been incurred have been paid by Contractor to Owner;
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (d) | Contractor has completed all Work and other obligations (except obligations requiring future performance (e.g., warranty Work)), including all Punch List items in accordance with
this Agreement;
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (e) | Contractor has provided all Submittals as required under this Agreement; and
| | --- | ----------------------------------------------------------------------------



| | (f) | Contractor has delivered to Owner all required final Lien waivers and releases related to the Work as required under Section 5.1.10.
| | --- | ------------------------------------------------------------------------------------------------------------------------------------

6.8.2Notice and Report of Final Completion. When Contractor determines that it has satisfied the conditions for Final Completion in
accordance with Section 6.8.1, Contractor shall deliver a Notice of such determination (Notice of Final Completion) to Owner in the form set forth in Appendix I-4. The Notice of Final Completion will
contain a certification by Contractor that it has satisfied all of the conditions for Final Completion pursuant to this Section 6.8 and a report with sufficient detail to enable Owner to determine whether Contractor has achieved such
requirements with respect to the Project.

6.8.3Achievement of Final Completion. Within 10 Business Days of receipt of the
Notice of Final Completion by Owner and the Owner Engineer, Owner shall inspect the Project and/or cause the Project to be inspected by the Owner Engineer, Owner Agents, and/or the Financing Engineer, and Owner shall either: (a) deliver to
Contractor a written acceptance of Contractors Notice of Final Completion in the form set forth in Appendix I-3 (the Certificate of Final Completion), or (b) notify Contractor in writing that it disputes
Contractors certification that the conditions for Final Completion have been met, or stating that it cannot confirm such satisfaction, stating with specificity the reasons therefor. If Owner issues the Certificate of Final Completion, the date
of Owners receipt of the Notice of Final Completion will be deemed the Final Completion Date. If Owner notifies Contractor that it disputes satisfaction of the conditions for Final Completion or cannot confirm such
satisfaction, then Contractor shall either promptly undertake such action or Work as necessary to meet such conditions or verify satisfaction thereof and issue another Notice of Final Completion to Owner or refer the matter to dispute resolution in
accordance with Article 17. In the event Contractor prevails in the Dispute, the date of Owners receipt of the then applicable Notice of Final Completion shall be deemed the Final Completion Date.

6.8.4Target Final Completion Date. Contractor shall perform the Work with the objective that the Final Completion Date will occur on or
before the Target Final Completion Date.



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ARTICLE 7

PERFORMANCE TESTING

7.1 Performance Tests. After Phase I Mechanical Completion, Contractor
shall perform, and re-perform if necessary, the Phase I Performance Tests. All Phase I Performance Tests will be conducted in accordance with the requirements of this Agreement and the applicable testing requirements specified in
Appendix C. After Phase I Substantial Completion and Mechanical Completion of the Balance of the Project, Contractor shall perform, and re-perform if necessary, the Performance Tests. All Performance Tests will be conducted only after
completion of the Owner activities described in Section 6.7.1 and the Performance Tests shall be conducted in accordance with the requirements of this Agreement and the applicable testing requirements specified in Appendix C.

7.2 Notice to Owner.

7.2.1Phase I Notice. Contractor shall give Owner and the Owner Engineer at least 10 Business Days advance Notice of the date on which Contractor intends to commence the initial Phase I Performance Tests to determine
Phase I Substantial Completion. Thereafter, Contractor shall give Owner and the Owner Engineer at least 5 Business Days advance Notice of all subsequent Phase I Performance Tests, unless a shorter notice period is agreed to in advance and in
writing by Owner. Contractor shall notify Owner and the Owner Engineer of such Phase I Performance Tests so that they may be present or represented to witness and monitor all aspects of such tests.

7.2.2Notice. Contractor shall give Owner and the Owner Engineer at least 10 Business Days advance Notice of the date on which
Contractor intends to commence the initial Performance Tests to determine Substantial Completion. Thereafter, Contractor shall give Owner and the Owner Engineer at least 5 Business Days advance Notice of all subsequent Performance Tests,
unless a shorter notice period is agreed to in advance and in writing by Owner. Contractor shall notify Owner and the Owner Engineer of such Performance Tests so that they may be present or represented to witness and monitor all aspects of such
tests.

7.3 Completed Performance Tests.

7.3.1Phase I Performance Tests. After Contractor has completed Phase I Performance Tests demonstrating compliance with all Phase I Performance Test requirements and Phase I Portion of the Project
performance necessary to achieve Phase I Substantial Completion, it shall give Notice to Owner and the Owner Engineer that it nominates such Phase I Performance Tests as a Completed Phase I Performance Test. Such Notice will be
accompanied by a preliminary test report for such Completed Phase I Performance Test as soon as reasonably practicable but in no event more than 24 hours after the completion of such Completed Phase



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I Performance Test (or as soon thereafter as such reports are first available to Contractor) providing a summary of the Phase I Performance Tests on which it
is based and including all raw data taken during such Phase I Performance Tests, and a final test report within 30 days thereafter. A final Completed Phase I Performance Test report must be delivered to Owner in accordance with
Appendix C. Contractor shall include sufficient results of testing in the preliminary test report to allow Owner to reasonably determine that there is a high probability that the final test results will confirm that the applicable
conditions of Phase I Substantial Completion have been achieved. As soon as practicable, but in any event within 10 Business Days after receipt of Notice by Owner and the Owner Engineer, Owner shall give Notice to Contractor either concurring with,
indication it cannot confirm concurrence, or rejecting the Completed Phase I Performance Test report and stating its reasons for such Notice, as the case may be. Such procedure shall be repeated until Contractor submits a Notice demonstrating
Project performance necessary to achieve Phase I Substantial Completion, as applicable. Subject to Article 17, if Contractors Notice of a Completed Phase I Performance Test is rejected by Owner, such test shall not constitute a
Completed Phase I Performance Test.

7.3.2Other Performance Tests. After Contractor has completed Performance Tests
demonstrating compliance with all Performance Test requirements and Project performance necessary to achieve Substantial Completion, it shall give Notice to Owner and the Owner Engineer that it nominates such Performance Tests as a
Completed Performance Test. Such Notice will be accompanied by a preliminary test report for such Completed Performance Test as soon as reasonably practicable but in no event more than 24 hours after the completion of such
Completed Performance Test (or as soon thereafter as such reports are first available to Contractor) providing a summary of the Performance Tests on which it is based and including all raw data taken during such Performance Tests, and a final test
report within 30 days thereafter. A final Completed Performance Test report must be delivered to Owner in accordance with Appendix C. Contractor shall include sufficient results of testing in the preliminary test report to allow Owner to
reasonably determine that there is a high probability that the final test results will confirm that the applicable conditions of Substantial Completion have been achieved. As soon as practicable, but in any event within 10 Business Days after
receipt of Notice by Owner and the Owner Engineer, Owner shall give Notice to Contractor either concurring with, indication it cannot confirm concurrence, or rejecting the Completed Performance Test report and stating its reasons for such Notice, as
the case may be. Such procedure shall be repeated until Contractor submits a Notice demonstrating Project performance necessary to achieve Substantial Completion. Subject to Article 17, if Contractors Notice of a Completed
Performance Test is rejected by Owner, such test shall not constitute a Completed Performance Test.

7.3.3Individual Test
Reports. After Contractor has completed any Performance Test, it shall provide to Owner a preliminary test report for each such test as soon as reasonably practicable but in no event more than 24 hours after the completion of



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such test (or as soon thereafter as such reports are first available to Contractor) providing a summary of such test and including all raw data taken during
such test and, if Contractor believes such test has been passed, a final test report within 30 days thereafter. If Contractor believes such test has been passed, Contractor shall include sufficient results of such testing in the preliminary test
report to allow Owner to determine that there is a high probability that the final test results will confirm that such test has been passed. Contractor shall not be required to provide an individual test report (preliminary or final) pursuant to
this Section 7.3.3 if the results of such test are, at the same time, to be included in the reports to be provided by Contractor pursuant to Section 7.3.1orSection 7.3.2.

7.4 Repetition of Tests. (a) If any Performance Test is not conducted in accordance with the requirements of this Agreement or fails
to demonstrate satisfaction of the applicable Performance Requirements, then Contractor shall, as part of the Work, (a) promptly take all actions necessary to correct any deficiencies in order to cure such failure, and (b) re-perform the
Performance Tests as many times as required until achievement of the applicable Performance Requirements is demonstrated pursuant to this Agreement.

(b) If a Change Event causes a failure to pass a Performance Test, then Contractor work will be reimbursed on a time and materials basis for the conduct of a re-test.

7.5 Re-Setting of Project. Promptly after the completion of any Performance Test, Contractor shall perform whatever Work is necessary, including
re-setting of Equipment (to the extent settings were allowed to be changed during any Performance Test) and repairs of damage or modifications caused by testing, to ensure that the normal operating control settings and configurations for the portion
of the Project involved in such testing are maintained.

7.6 Operation of the Project. In the event that either (a) Contractor
has not conducted a successful Phase I Performance Test within 30 days after the Target Phase I Mechanical Completion Date or (b) Contractor has not conducted a successful Performance Test within 30 days after the Target Mechanical Completion
Date, then Owner shall have the right to operate and maintain the Phase I Portion of the Project or the entire Project, as applicable, prior to completion of the applicable Performance Test to produce activated carbon and (with respect to the
Balance of the Project) electricity, in each case, for the benefit of Owner, subject to the following conditions:



| | (a) | All costs of such operation and maintenance that would be borne by Owner after Final Completion (including but not limited to costs of supplies, feed stock, chemicals, fuels and
lubricants, operating personnel, overhead, debt service, taxes and transportation) shall be borne by Owner during this period of interim operation and maintenance, and
| | --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (b) | This right of Owner shall not operate to, or be construed to, delay, limit, prevent or in any way impede Contractors right to control the Project in order to conduct
additional Performance Tests at its discretion.
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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ARTICLE 8

PERFORMANCE AND COMPLETION REQUIREMENTS,

LIQUIDATED DAMAGES AND BONUS

8.1 Phase I Substantial Completion Requirements.

8.1.1Phase I Performance Requirements. The Project shall meet the Phase I Performance Requirements described in Sections 8.1.1.1 through 8.1.1.3 when tested pursuant to a Completed
Phase I Performance Test performed in accordance with the requirements of Appendix C and the other provisions of this Agreement and Applicable Legal Requirements. In addition to the foregoing, the Phase I Portion of the Project must be
capable of continuous commercial operations in compliance with Applicable Legal Requirements.

The requirements set forth in
Sections 8.1.1.1 through 8.1.1.3 are the Phase I Performance Requirements.

8.1.1.1Activated Carbon Capacity Generation. The activated carbon capacity generation from each MHF and the associated components of the Phase I Portion of the Project will not be less than the number of tons/day/MHF set
forth in Appendix C when corrected to design conditions and with each component relied upon functioning within its design limits and original equipment manufacturer requirements (Phase I Activated Carbon Production
Requirement).

8.1.1.2Activated Carbon Quality Specification. The activated carbon produced from
the Phase I Portion of the Project will satisfy the particle size requirements and the * requirements set forth in Appendix C(Phase I Activated Carbon Specification Requirement).

8.1.1.3Environmental Compliance Requirement. The Phase I Portion of the Project will comply with all requirements of the
emissions table set forth in Appendix C applicable to the Phase I Portion of the Project and all environmental Applicable Legal Requirements and all environmental requirements of the Permits applicable to the Phase I Portion of the
Project (Phase I Environmental Compliance Requirement).

8.1.2Phase I Substantial Completion Date.
Contractor shall perform the Work with the objective that the Phase I Substantial Completion Date will occur on or before the Target Phase I Substantial Completion Date.

8.2 Substantial Completion Performance Test Requirements.

8.2.1Performance
Requirements. The Project shall meet the Performance Requirements described in Sections 8.2.1.1 through 8.2.1.5(or the Minimum Performance Requirements described below) when tested pursuant to a Completed Performance



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Test performed in accordance with the requirements of Appendix C and the other provisions of this Agreement and Applicable Legal Requirements. In
addition to the foregoing, the Project must be capable of continuous commercial operations in compliance with Applicable Legal Requirements.

The requirements set forth in Sections 8.2.1.1 through 8.2.1.5 are the Performance Requirements.

8.2.1.1Activated Carbon Capacity Generation.The activated carbon capacity generation from (a) each MHF and the associated components of the Project will not be less than the number of tons/day/MHF
set forth in Appendix C, and (b) the Project will satisfy the delivery rate, extraction rate, grinding and processing rate into storage silos, set forth in Appendix C, when corrected to design conditions and with each component
relied upon functioning within its design limits and original equipment manufacture requirements (collectively the Activated Carbon Production Requirement).

8.2.1.2Activated Carbon Quality Specification. The activated carbon produced from the Project will satisfy the particle
size requirements and the * requirements set forth in Appendix C (the Activated Carbon Specification Requirement).

8.2.1.3set forth in Appendix C (the Activated Carbon Specification Requirement).

8.2.1.4Lime Consumption Requirement. Pebble lime consumption rate shall not exceed the number of tons/hr set forth in Appendix C directly proportional to the quantity (in tons) of coal necessary
to produce activated carbon that satisfies the Activated Carbon Specification Requirement under the then present activated carbon throughput level and sulfur related Environmental Compliance Requirement (the Lime Consumption
Requirement).

8.2.1.5Net Electrical Output Requirement. The Net Electrical Output from the Project
will not be less than the megawatt production requirements set forth in Appendix C, when corrected to design conditions and during Project operation satisfying the Activated Carbon Production Requirement (the Net Electrical Output
Requirement).

8.2.1.6Environmental Compliance Requirement. The Project will comply with all
requirements of the emissions table set forth in Appendix C, all environmental Applicable Legal Requirements and all environmental requirements of the Permits applicable to the Project (the Environmental Compliance
Requirement).



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The requirements set forth in Section 8.2.1.6through Section 8.2.1.8, together
with the requirements set forth in Section 8.2.1.1 and Section 8.2.1.5, are the Minimum Performance Requirements.

8.2.1.7Minimum Carbon Capacity Generation. The Minimum Carbon Capacity Generation is *% of the Activated
Carbon Production Requirement for each component associated with the MHF and Project requirements set forth in Section 8.2.1.1.

8.2.1.8Maximum Lime Consumption Requirements. The Maximum Lime Consumption Requirement is *% of the full Lime Consumption Requirement set forth in Section 8.2.1.3.

8.2.1.9Minimum Net Electrical Output Requirement. The Minimum Net Electrical Output
Requirement is *% of the full Net Electrical Output Requirement set forth in Section 8.2.1.4.

Each percentage point
described in the Minimum Performance Requirements shall be measured in tenths of a percentage, with percentages less than 0.49% constituting the immediately lower percentage value and percentages greater than 0.50% constituting the immediately
higher percentage value, excepting only that the lowest percentage shall be the absolute minimum.

8.2.2Target Substantial
Completion Date. Contractor shall perform the Work with the objective that the Substantial Completion Date for the Project will occur on or before the Target Substantial Completion Date.

8.2.3Target Final Completion Date. Contractor shall perform the Work with the objective that Final Completion of the Project will occur on
or before the Target Final Completion Date.

8.3 Late Substantial Completion Damages.

8.3.1Late Phase I Substantial Completion Liquidated Damages. If Phase I Substantial Completion does not occur on or before the Required
Phase I Substantial Completion Date, Contractor shall pay liquidated damages to Owner for such delay for each and every day that elapses between the Required Phase I Substantial Completion Date and the date on which Phase I Substantial Completion
occurs (Late Phase I Substantial Completion Damages). The per-day Late Phase I Substantial Completion Damages payable pursuant to this Section shall be $* per day. The Late Phase I Substantial Completion Damages payable pursuant
to this Section 8.3.1are subject to the aggregate limitation for delay liquidated damages set forth in Section 16.1.2. Notwithstanding the payment of Late Phase I Substantial Completion Damages, Contractor shall continue to
expeditiously perform, repair, replace and fix the Work until Phase I Substantial Completion is achieved. The Parties agree that it would be extremely difficult and impracticable to determine precisely the amount of actual damages that would be
suffered by Owner as a result of Contractors failure to achieve



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Phase I Substantial Completion Date by the Required Phase I Substantial Completion Date. The Parties further agree that the Late Phase I Substantial
Completion Damages are fair and reasonable. The Parties agree that each is estopped to argue the invalidity, unenforceability or otherwise question the reasonableness of the Late Phase I Substantial Completion Damages, as they represent the
allocation of risk between the Parties and the basis of the bargain. Late Phase I Substantial Completion Damages will not (i) limit Contractors liability for its failure to perform any of its other obligations hereunder, including Defects
in the Work, or its obligations to achieve Final Completion, or (ii) limit Owners remedies for Contractors failure to perform any of its other obligations hereunder. Liquidated damages under this Section 8.3.1are
understood to be an estimate of actual damages and not a penalty, and to represent Contractors sole liability and Owners sole remedy for the deficiency under this Section 8.3.1 giving rise to the liquidated damages liability.

8.3.2Late Substantial Completion Liquidation Damages. If Substantial Completion does not occur on or before the Required
Substantial Completion Date, Contractor shall pay liquidated damages to Owner for such delay for each and every day that elapses between the Required Substantial Completion Date and the date on which Substantial Completion occurs (Late
Substantial Completion Damages). The per-day Late Substantial Completion Damages payable pursuant to this Section shall be $* per day for the first 30 days of delay and then $* for each additional day of delay. The Late Substantial
Completion Damages payable pursuant to this Section 8.3.2are subject to the aggregate limitation for delay liquidated damages set forth in Section 16.1.3. Notwithstanding the payment of Late Substantial Completion Damages,
Contractor shall continue to expeditiously perform, repair, replace and fix the Work until Substantial Completion is achieved. The Parties agree that it would be extremely difficult and impracticable to determine precisely the amount of actual
damages that would be suffered by Owner as a result of Contractors failure to achieve the applicable Substantial Completion Date by the Required Substantial Completion Date. The Parties further agree that the Late Substantial Completion
Damages are a fair and reasonable substitute therefor. The Parties agree that each is estopped to argue the invalidity, unenforceability or otherwise question the reasonableness of the Late Substantial Completion Damages, as they represent the
allocation of risk between the Parties and the basis of the bargain. Late Substantial Completion Damages will not (i) limit Contractors liability for its failure to perform any of its other obligations hereunder, including Defects in the
Work, or its obligations to achieve Final Completion, or (ii) limit Owners remedies for Contractors failure to perform any of its other obligations hereunder. Liquidated damages under this Section 8.3.1are understood to
be an estimate of actual damages and not a penalty, and to represent Contractors sole liability and Owners sole remedy for the deficiency under this Section 8.3.1 giving rise to the liquidated damages liability.



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8.3.3Overlap of Delay Liquidated Damage Periods. In the event that the Phase I Substantial
Completion Date has not occurred and Contractor is paying Late Phase I Substantial Completion Damages pursuant to Section 8.3.1 above and the date on which Late Substantial Completion Damages are first due from Contractor occurs,
pursuant to Section 8.3.2, then Contractor shall not be obligated for any single day to pay Liquidated Damages under both Section 8.3.1 and Section 8.3.2, but shall only be obligated to pay the Liquidated Damages
under Section 8.3.2.

8.3.4Payment of Delay Liquidated
Damages. Contractor shall pay Owner for daily liquidated damages accrued in respect of the fixed daily amounts under Section 8.3for each month (or any part of a month) of such delay, on or before the 30thday of the immediately succeeding month. Owner shall have the right to offset any liability of Contractor under this Section 8.3.4against any
amount owed by Owner to Contractor under this Agreement. If Contractor is required to pay delay liquidated damages under Section 8.3.2hereof, Contractors obligation to pay such delay liquidated damages (other than damages accrued)
shall cease upon the occurrence of Substantial Completion based on the Minimum Performance Requirements.

8.4 Buy
Down.

8.4.1Cure Period. If Contractor does not achieve the full Performance Requirements and the full Reliability
Requirement, in each case within 60 days after the occurrence of the Substantial Completion Date, then Contractor shall pay to Owner the Buy Down Amount pursuant to this Section 8.4based on the results of the most recent Completed
Performance Test certified by the Financing Engineer.

8.4.2Buy Down Amount. As liquidated damages for the failure to
achieve the full Performance Requirements and the full Reliability Requirement as demonstrated by the results of the most recent Completed Performance Test and Completed Reliability Test, certified by the Financing Engineer, Contractor shall pay the
following liquidated damages (the Buy Down Amount) based on the results of such recent Completed Performance Test and Completed Reliability Test.

8.4.2.1Activated Carbon Production. For failure to achieve the full Activated Carbon Production Requirement and subject to
the limit set forth in Section 16.1.3, Contractor shall pay liquidated damages calculated as follows:



| |  |  | *% for any one or more components of the full Requirement$*
| | - |  | ------------------------------------------------------------



| |  |  | *% for any one or more components of the full Requirement$*
| | - |  | ------------------------------------------------------------



| |  |  | *% for any one or more components of the full Requirements$*
| | - |  | -------------------------------------------------------------



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| |  |  | The amounts shall be pro-rated for each tenth of a percentage, rounded as provided in Section 8.4.2.5 below.
| | - |  | ------------------------------------------------------------------------------------------------------------

8.4.2.2Lime Consumption. For exceeding the Lime Consumption Requirement, Contractor shall pay liquidated damages calculated
as follows:



| |  |  | *% of the full Requirement$*
| | - |  | -----------------------------



| |  |  | *% of the full Requirement$*
| | - |  | -----------------------------



| |  |  | *% of the full Requirement$*
| | - |  | -----------------------------



| |  |  | *% of the full Requirement$*
| | - |  | -----------------------------



| |  |  | *% of the full Requirement$*
| | - |  | -----------------------------



| |  |  | The amount shall be pro-rated for each tenth of a percentage, rounded as provided in Section 8.4.2.5 below.
| | - |  | -----------------------------------------------------------------------------------------------------------



| |  |  | The liquidated damages payable pursuant to this Section 8.4.2.2 are subject to the applicable individual limitation on performance liquidated damages as
provided in Section 16.1.4.
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

8.4.2.3Net Electrical Output. For failure to
achieve the full Net Electrical Output Requirement, Contractor shall pay liquidated damages calculated as follows:



| |  |  | *% of the full Requirement$*
| | - |  | -----------------------------



| |  |  | *% of the full Requirement$*
| | - |  | -----------------------------



| |  |  | *% of the full Requirement$*
| | - |  | -----------------------------



| |  |  | *% of the full Requirement$*
| | - |  | -----------------------------



| |  |  | *% of the full Requirement$*
| | - |  | -----------------------------



| |  |  | The amount shall be pro-rated for each tenth of a percentage, rounded as provided in Section 8.4.2.5 below.
| | - |  | -----------------------------------------------------------------------------------------------------------



| |  |  | The liquidated damages payable pursuant to this Section 8.4.2.3 are subject to the applicable individual limitation on performance liquidated damages as
provided in Section 16.1.4.
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

8.4.2.4Reliability. For failure to achieve the
full Reliability Requirement (satisfied at *%) and subject to the limit set forth in Section 16.1.3, Contractor shall pay liquidated damages calculated as follows:



| |  |  | *%$*
| | - |  | -----



| |  |  | *%$*
| | - |  | -----



| |  |  | *%$*
| | - |  | -----



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| |  |  | The amount shall be pro-rated for each tenth of a percentage, rounded as provided in Section 8.4.2.5 below.
| | - |  | -----------------------------------------------------------------------------------------------------------



| |  |  | The liquidated damages payable pursuant to this Section 8.4.2.4 are subject to the applicable individual limitation on performance liquidated damages as
provided in Section 16.1.3.
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

8.4.2.5Percentage Calculation. Each percentage
point described in Section 8.4.2.1 through 8.4.2.4 shall be measured in tenths of a percentage, with percentages less than 0.49% constituting the lower percentage value and percentages greater than or equal to 0.50% constituting
the immediately higher percentage value (e.g., 5.149% would be 5.1% and 5.150% would be 5.2%), excepting only that the lowest percentage shall be the absolute minimum.

8.4.3Reasonableness. Contractor and Owner acknowledge and agree that the terms and amounts of the Buy Down Amounts are reasonable considering the damages that Owner if Contractor fails to achieve the
full Performance Requirements or the full Reliability Requirement. These amounts are agreed upon and fixed as liquidated damages because of the difficulty of ascertaining as of the date hereof the exact amount of damages that would be sustained in
such event and are Owners sole monetary damage remedy for Contractors failure to achieve the full Performance Requirements and the full Reliability Requirement.

8.4.4Payment of Buy Down Amount. Contractor shall pay any Buy Down Amount it is
required to pay Owner on or before the 90thday after the date on which Substantial Completion occurred (or the date of termination of this
Agreement if the Substantial Completion Date does not occur). To the extent that Owner is holding Retainage, the full amount of such Retainage so held shall be applied to reduce the amount of the Buy Down Amount owed to Owner on a dollar for dollar
basis. The aggregate amount payable by Contractor in respect of the Buy Down Amount is subject to the aggregate limitation for performance liquidated damages as provided in Section 16.1.3.

8.4.5Limitation on Right to Minimum Performance Requirements and/or Minimum Reliability Requirement. If the Project does not demonstrate
satisfaction of each of the Minimum Performance Requirements and/or the Minimum Reliability Requirement, then Contractor (a) shall not be entitled to pay the Buy Down Amount and (b) must continue to prosecute the Work under this Agreement
in order to cause the occurrence of (i) Substantial Completion, with respect to the Minimum Performance Requirements, thereby terminating Contractors Obligation to continue paying delay liquidated damages pursuant to
Section 8.3 and (ii) Final Completion, with respect to the Minimum Reliability Requirement.

8.5 Early Phase I
Substantial Completion Bonus. If the Phase I Substantial Completion Date occurs before the Target Phase I Substantial Completion Date, then Contractor will earn a bonus equal to (a) $* per day for the first thirty days and (b) $* per
day for



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each additional day by which the Phase I Substantial Completion Date is earlier than the Target Phase I Substantial Completion Date (the Early Phase
I Substantial Completion Bonus Amount); provided, however, that for purposes of earning the Early Phase I Substantial Completion Bonus the full Phase I Portion of the Project performance (including the Multi Hearth Furnaces)
shall be included in determining entitlement and Contractor shall not be entitled to relief, credit or adjustment based on performance failures or other performance problems due in whole or in part to any part of the Phase I Portion of the Project
provided under any Owner Contract or which is otherwise part of Owner Suppliers Scope, it being the intent of the Parties that such bonus shall only be earned if the complete Phase I Portion of the Project demonstrates early performance.

8.6 Early Substantial Completion Bonus. If the Substantial Completion Date occurs before the Target Substantial Completion
Date, then Contractor will earn a bonus equal to $* per day for the first 30 days by which the Substantial Completion Date is earlier than the Target Substantial Completion Date and $* per day for each earlier day (the Early Substantial
Completion Bonus Amount); provided, however, that for purposes of earning the Early Substantial Completion Bonus Amount the full Project performance (including the Multi Hearth Furnaces) shall be included in determining
entitlement and Contractor shall not be entitled to relief, credit or adjustment based on performance failures or other performance problems due in whole or in any part of the Project provided under any Owner Contract or which is otherwise part of
Owner Suppliers Scope, it being the intent of the Parties that such bonus shall only be earned if the complete Project demonstrates early performance.



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ARTICLE 9

THE WARRANTY PERIODS

9.1 General Warranty of Work, Materials and Equipment.
Contractor hereby warrants to Owner that:



| | (a) | the Work will be designed, furnished and performed (i) in accordance with Professional Standards, and (ii) in compliance with the provisions of this Agreement (including,
without limitation the provisions of Appendix A which require that certain components of the Project designed for a * tons per day capability and/or a turn-down or reduced capacity capability) and all Applicable Legal Requirements in effect
on the Effective Date or, in respect of the Work described in a Change Order, the date of such Change Order;
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (b) | the Work will be free from Defects in workmanship and material; and
| | --- | -------------------------------------------------------------------



| | (c) | all Contractor Equipment and Materials provided by Contractor will be new and unused at the time of their delivery to the Project Site, except reconditioned special tools approved
by Owner as provided in Section 6.4.1(e).
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

9.2 Owner Supplier Work. Until Substantial Completion,
Contractor shall:



| | (a) | assist Owner in enforcing Owners warranty rights under Owner Contracts and managing the warranty response by Owner Suppliers; and
| | --- | ----------------------------------------------------------------------------------------------------------------------------------



| | (b) | perform such construction, disassembly and testing and related services as are necessary to complete warranty repairs or corrections of defects manifest in Owner Suppliers
Scope under the Owner Contracts.
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

9.3 Nonconforming Work. During the applicable Warranty Period, Owner, Owner
Agents, Owners Authorized Representative, and/or other Persons that Owner has given Contractor Notice that such Persons are authorized by Owner to act on its behalf (Owner Authorized Parties), to the extent of their
authority, shall have the authority to require Contractor to re-perform, repair or replace any Work (including Contractor Equipment and Materials) that does not conform to the requirements of Section 9.1 (Warranty
Defect), including the obligation to perform any Work or activity necessary to access the Work to be re-performed, repaired or replaced and any Work or activity necessary to recover, finish or otherwise cover and return to full operating
status the Work to be re-performed, repaired or replaced; provided, however, that neither the identification of a Warranty Defect nor any decision made by Owner in good faith either to exercise or not to exercise their rights under
this Article 9, will give rise to any duty or responsibility of Owner.



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9.4 Contractors Warranty Work. If Owner gives Contractor Notice of a Warranty Defect
during the applicable Warranty Period, Contractor shall, at its sole expense, promptly (consistent with the access provided by Owner) correct such Warranty Defect by repair or replacement at Contractors sole option, which repair or replacement
will include all access and restoration Work associated therewith. To the extent that correction of the Warranty Defect involves the re-performance, repair, re-supply or replacement of any item supplied or performed pursuant to an Owner Contract,
Contractor shall assist Owner in procuring such re-performance, repair, re-supply or replacement by the Owner Supplier and the costs incurred by Owner on account thereof to correct such Warranty Defect will be added to the Total Work Cost. The plan
for the repair or replacement of a Warranty Defect shall be made in consultation with Owner and Contractor shall schedule any Work in respect of the Warranty Defect during off-peak hours consistent with (a) Owners operating requirements
so as to minimize, to the maximum possible extent, loss of production or use of any portion of the Project. Contractor shall use commercially reasonable efforts to conduct its Work associated with a Warranty Defect on a timely basis (inclusive of
overtime) if Owner reasonably determines that an expedited schedule is necessary to avoid or minimize the effects on activated carbon production. Except as provided above and subject to Section 9.12, Contractor shall bear all costs and
expenses associated with correction of any Warranty Defect notified to Contractor during the applicable Warranty Period. Such costs shall include the costs of necessary disassembly, transportation, reassembly, retesting, reworking, repair, or
replacement of such Warranty Defect, engineering, and the costs of testing reasonably required to verify that the repaired or replaced Work conforms to the applicable Warranties and the requirements of this Agreement. Contractor shall collect and
assemble all warranty documents and deliver them to Owner prior to the expiration of the applicable Warranty Period or termination of this Agreement, whichever is earlier. Any repair and replacement performed by Contractor pursuant to this
Article 9 shall constitute Work and the provisions of this Article 9 apply to such Work.

9.5Warranty
Periods.

9.5.1Duration. The Warranty Period
commences (a) for the Phase I Portion of the Project, on the Phase I Substantial Completion Date and (b) for the Balance of the Project, on the Substantial Completion Date, and in each case expires on the first (1st) anniversary of
the date it commenced. If any Work is required to be completed, repaired, replaced, or otherwise corrected pursuant to this Article 9, the Warranty Period for such repaired, replaced or corrected Work will be one (1) year from the
date that such repair, replacement, or correction is completed; provided, however, that in no case will the Warranty Period for such repaired, replaced or corrected Work extend beyond the second (2nd) anniversary of the date the Warranty Period initially commenced.

9.5.2Transfer. Upon the earlier of (a) the termination of this Agreement, or (b) the end of the Warranty Period, Contractor shall, promptly and without any other obligation on the part of Owner, transfer to Owner
all Subcontractor Warranties that extend



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beyond the applicable Warranty Period under this Article 9. Prior to transferring the extended warranties to Owner, Contractor shall maintain and
enforce such warranties and shall not materially modify or amend such warranties without the prior written consent of Owner, which may be withheld for any reason.

9.6 Subcontractor Warranties. Contractor shall use its commercially reasonable efforts to obtain other warranties, including additional and extended warranties, for the benefit of Contractor and Owner
from Subcontractors in relation to their respective portions of the Work. Copies of all such warranties obtained by Contractor shall be provided to Owner promptly upon execution of the applicable Contractor Subcontract by Contractor. Such warranties
will be written to survive Contractors tests, inspections and approvals and will be assignable, as provided in the next sentence, to Owner without Subcontractors consent. On the earlier of (a) the Substantial Completion Date for
such Work or (b) the termination of this Agreement, Contractor shall assign to Owner any Subcontractor warranty for Work or Equipment provided by Contractor hereunder.

9.7 Root Cause Repairs. If there are 2 or more failures of any component during the Warranty Period (either original or as may be extended
as a result of failures during the original Warranty Period), then, at the request of Owner, Contractor shall perform a root cause analysis investigation of such failures and, if such investigation (a) reveals a Warranty Defect, make such
repairs, replacements or adjustments necessary to correct the Warranty Defect; or (b) reveals a defect in Owner Suppliers Scope (Owner Supplier Defect), provide the assistance described in Section 9.2 on a cost
reimbursable basis in respect thereof if requested by Owner. As requested by Owner, Contractor shall submit, as part of its root cause analysis investigation and report, all design and performance calculations related to such component failure. IF
SUCH FAILURE IS CAUSED BY A DEFECT IN OWNER SUPPLIERS SCOPE, ALL COST ASSOCIATED WITH THE ROOT CAUSE ANALYSIS SHALL BE REIMBURSABLE TO CONTRACTOR.

9.8 Cure Rights of Owner for Breach of Warranty. Promptly upon receipt by Contractor of Notice from Owner identifying a Warranty Defect (which period will be as short as possible, but in no event longer than 2
Business Days if the Project is forced out of service or is operating on a restricted basis), Contractor shall give Notice to Owner of when and how such Warranty Defect will be remedied; provided, however, that Contractor will conduct
its cure activities in a commercially reasonable and prompt manner; provided, further, in cases of imminent danger to life or property or forced outage of the Project, Contractor shall make best efforts to remedy such Warranty Defect
as soon as possible, taking into consideration mobilization to the Project Site and availability of Contractor Personnel. If Contractor does not begin and diligently proceed to complete said remedy within the time period specified in the corrective
approach, Owner after Notice to Contractor, shall have the right to perform or to have performed by third parties the necessary remedy, and the costs thereof (including a warranty thereon) shall be borne by Contractor; provided,
however, that any such warranty Work performed by a third party shall no longer be subject to the provisions of Section 9.1.



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9.9 Title to Warranty Work. Title to all Equipment and Materials provided in performing
warranty Work, including all repairs, replacements and corrections, will pass to Owner immediately upon the inclusion thereof into the Project and otherwise will be subject to the provisions of Section 2.5.1.

9.10 Exclusions. The warranty set forth in Section 9.1 will not apply to Defects in, damage to or breakdown of the Work after care,
custody and control has been turned over to Owner in accordance with this Agreement to the extent such Defect, damage or breakdown is caused by:



| | (a) | Owners failure to operate or maintain the Project in accordance with Prudent Industry Practices;
| | --- | -------------------------------------------------------------------------------------------------



| | (b) | Owners failure to give Contractor Notice of a Warranty Defect actually known to Owner promptly after its discovery by Owner;
| | --- | -----------------------------------------------------------------------------------------------------------------------------



| | (c) | continued operation of the Project following identification of the Defect, to the extent such continued operation exacerbates the Defect or creates additional Defects that require
warranty Work;
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (d) | normal wear and tear; or
| | --- | ------------------------



| | (e) | Owners denial of Contractors reasonable request for access to the Defect for the performance of Contractors warranty obligations, such access to be consistent with
Project operations and Prudent Industry Practices.
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (f) | Exclusions contained in purchase documents of Contractors equipment vendors that are approved by Owner.
| | --- | --------------------------------------------------------------------------------------------------------

9.11 Primary Liability. Subject to Section 9.10(f) above, Contractor has primary liability with respect to the warranties set forth in
Section 9.1 of this Agreement, whether or not any Defect or other matter is also covered by a warranty of a Subcontractor, and Owner needs only look to Contractor for corrective action. The refusal of a Subcontractor or other third party
to correct defective Work will not excuse Contractor from its liability as to the warranties provided herein.

9.12 General Limitations
on Warranties and Remedies. EXCEPT FOR THE PROVISIONS OF ARTICLE 6 AND 8 RELATING TO THE RELIABILITY TEST, THE REMEDIES PROVIDED IN THIS ARTICLE 9 ARE THE EXCLUSIVE REMEDIES OF OWNER AND THE SOLE OBLIGATION AND LIABILITY OF
CONTRACTOR ARISING OUT OF CLAIMS FOR WARRANTY DEFECTS OR DEFECTS IN THE WORK IDENTIFIED AFTER THE SUBSTANTIAL COMPLETION DATE



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FOR SUCH WORK. EXCEPT FOR THE EXPRESS WARRANTIES SET FORTH IN THIS ARTICLE 9, CONTRACTOR DOES NOT MAKE ANY OTHER EXPRESS WARRANTIES, OR ANY IMPLIED
WARRANTIES, OF ANY KIND WHATEVER RELATING TO THE WORK TO BE SUPPLIED BY CONTRACTOR UNDER THIS AGREEMENT OR TO THE FACILITY, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR PARTICULAR PURPOSE, CUSTOM OR USAGE OR OTHERWISE.



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ARTICLE 10

CHANGES

10.1 Changes. Without invalidating this Agreement, by issuance of a written order,
in the form set forth in Appendix I-5, (each such order, a Change Order) (a) changes to the Work or the Project may be made, including any addition to, deletion from, suspension of or other modification to the
quality, function or intent of the Work or the Project, and (b) to the extent specifically provided for in this Article 10, adjustments may be made to the Project Schedule (including the Target Contract Dates and the Required
Contract Dates), Performance Requirements, the Construction Price, the Target Total Work Cost, the Milestone Payment Schedule or the other obligations or liabilities of the Parties under this Agreement (all of the foregoing,
Changes). Changes may only be authorized by Change Orders issued in accordance with this Article 10; provided, however, that Contractor shall not be required to make any Change that (x) requires it
to perform work that is not rationally or functionally related to the Work described in this Agreement on the Effective Date, or (y) requires Contractor to transport and dispose of Owner Hazardous Substances for which Owner is responsible under
this Agreement. Except for an emergency in which imminent harm to Persons or damage to property can only be avoided by proceeding with a Change without approval by Owner, in no event shall Contractor unilaterally undertake a Change until (i) a
Change Order has been approved by Owner, or (ii) if a disagreement exists with respect to a proposed Change Order as described in Section 10.2.2, Contractor has received Notice from Owner to proceed under protest.

10.2 Procedure for Changes.

10.2.1Changes Initiated by Contractor. Within 10 Business Days after Contractor becomes aware of any circumstances, including Change Events, which Contractor has reason to believe may necessitate a Change, Contractor shall
issue to Owner a Change Order Request. All Change Order Requests will include, to the extent then reasonably available (and thereafter promptly updated as information becomes available) to provide, documentation sufficient to
enable Owner to determine: (a) the factors necessitating the possibility of a Change; (b) the impact the Change is likely to have on the Fixed Component; (c) the impact the Change is likely to have on the timely achievement of the
Project Schedule (including the Target Contract Dates and the Required Contract Dates, as applicable); (d) the impact the Change is likely to have on the Craft Labor Hour Target, (e) the impact the Change is likely to have on the
Reimbursable Component, (f) the impact the Change is likely to have on the Target Total Work Cost; (g) the impact the Change is likely to have on the quality, function or intent of the Work or any of the other obligations or liabilities of
the Parties under this Agreement, and (h) such other information which Owner may reasonably request in connection with such Change; provided, however, that the information required by clause (a) is the only essential element
to be provided within the initial 10 Business Day period. Owner may, but except as provided in Section 10.3 below will not be obligated to, issue a Change Order



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pursuant to a Change Order Request. Owner must provide its response to Contractors Change Order Request within 10 Business Days after receipt thereof.
Unless otherwise stated by Owner in writing or in the case of an emergency in which imminent harm to Persons or damage to property can only be avoided by proceeding with work outside the Work, any work outside the Work described in this Agreement
performed by Contractor prior to its having received an executed Change Order from Owner will be considered unauthorized work and will be at Contractors sole risk and expense. In no event will a Recovery Plan or other document or Submittal
constitute a Change Order under this Agreement, unless such document is clearly titled a Change Order and otherwise satisfies all of the requirements of a Change Order under this Article 10.

10.2.2Changes Initiated by Owner. If Owner desires to make a Change constituting a modification to the quality, function, intent or scope
of the Work (including aspects of the Work relating to the operation or care, custody and control of the Project), it shall submit a Change Order Notice to Contractor. Contractor shall promptly review the Change Order Notice and
provide Notice to Owner of the estimated cost to develop the Change Order, which Notice will be accompanied with reasonable supporting documentation. Within 10 Business Days (or if 10 Business Days is not reasonably adequate, then as promptly
thereafter as practicable) after Owner and Contractor agree to the cost of developing the Change Order estimate, Contractor shall provide Owner with Notice of the options for implementing the proposed Change (including, if possible, any option that
does not involve an extension of time or additional cost) and the estimated effect(s), if any, that each such option would have on the Performance Requirements, Fixed Component, Craft Labor Hour Target, Reimbursable Component, the Target Total Work
Cost, the Milestone Payment Schedule, the Project Schedule (including the Target Contract Dates and the Required Contract Dates), and any of the other obligations or liabilities of the Parties under this Agreement. The timing of Work to be performed
pursuant to a Change directed by Owner must be consistent with resources available to Contractor. Based upon such information, Owner may, but will not be obligated to, issue a Change Order making a Change based upon such Change Order Notice. If
Owner and Contractor cannot promptly reach agreement on the matters listed in the Change Order Notice, or cannot agree that the matters under discussion constitute a Change, Owner may, at its sole discretion, order Contractor by Notice to promptly
proceed to complete the Change in accordance with Owners interpretation of the matter under Dispute. Contractor may refuse to implement a Change ordered pursuant to this Section 10.2 only if such Change (a) would constitute a
violation of Applicable Legal Requirements, (b) requires Contractor to perform work that is not rationally or functionally related to the Work, or (c) requires Contractor to transport and dispose of Hazardous Substances for which Owner is
responsible under this Agreement.

10.3 Change Events. Except as otherwise provided herein, if and to the extent that:



| | (a) | a Force Majeure event or Change of Law (other than any Excluded Change of Law);
| | --- | -------------------------------------------------------------------------------



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| | (b) | a suspension of the Work in accordance with this Agreement (for an improperly issued stop work order);
| | --- | ------------------------------------------------------------------------------------------------------



| | (c) | adverse impact on the Work pursuant to Section 2.2.13.3 or Section 3.9, other than for a Hazardous Substance for which Contractor is responsible;
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------



| | (d) | a delay or other adverse impact arising from a discovery pursuant to Section 2.5.5;
| | --- | -----------------------------------------------------------------------------------



| | (e) | a delay or failure of Owner or an Owner Supplier to perform its obligations in accordance with this Agreement or an Owner Contract (except in either case to the extent such delay or
failure is attributable to Contractor or Subcontractors);
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (f) | a change in Owners policies and procedures after Substantial Completion that adversely affect the performance of the Work;
| | --- | ---------------------------------------------------------------------------------------------------------------------------



| | (g) | any Separate Contractor of Owner, any of the Engineers, or any other designee or invitee of Owner performing work on the Project Site fails to comply with the reasonable
coordination requirements Contractor is entitled to impose under this Agreement, causing a material interference with the performance of the Work, except to the extent such interference results from the fault of Contractor or its Subcontractors;
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (h) | delay in issuance of the Full Notice to Proceed after September 8, 2008;
| | --- | ------------------------------------------------------------------------



| | (i) | a delay or other net impact on Contractor resulting from a change order executed or option exercised under an Owner Contract, except to the extent arising from failure of Contractor
(or its Subcontractors) to perform obligations in accordance with this Agreement;
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (j) | a delay or other adverse impact on Contractor resulting from Owners exercise of its right to prevent the specific exercise of Contractors authority under
Appendix M, except to the extent attributable to the fault of Contractor or its Subcontractors;
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (k) | an Owner Test Interruption occurs.
| | --- | ----------------------------------

(each, a Change
Event), causes Contractor to suffer a delay in the critical path of the Work, increases Contractors costs in performing the Work or otherwise increases the costs of the Work, impacts the ability of the Work to achieve the Performance
Requirements, or adversely impacts Contractors ability to perform any of its other material obligations under this Agreement, then Owner shall, by Change Order, equitably adjust the Required Contract Dates in accordance with
Section 10.4, equitably increase the Fixed Component in accordance with Section 10.5, equitably adjust the Milestone Payment Schedule, and/or equitably adjust the Performance Requirements or other obligations of Contractor so
adversely impacted.



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10.4 Changes Involving Schedule Extensions. To the extent that Contractor demonstrates that a
Change (or the Change Event necessitating a Change) as described in Section 10.2.2 or Section 10.3 will delay the achievement of the Required Contract Dates, then Owner shall cause a Change Order directing such Change (or
resulting from such Change Event) to equitably extend the Required Contract Dates to account for the delay in the critical path of the Work.

10.5 Changes to the Fixed Component. In the event a Change Order or Change Event under Article 10 increases or decreases the cost of the Work, reflected in the Fixed Component, subject to Contractors reasonable
efforts to mitigate the impact of such event, an equitable adjustment shall be made to the Fixed Component.

10.6 Continued Performance
Pending Resolution of Disputes. Notwithstanding and pending resolution of any Dispute with respect to a Change, Contractor shall proceed on a time and materials basis, upon receipt of Notice from Owner, with the performance of any Change Order
issued by Owner. If Owner and Contractor cannot reach agreement on the schedule adjustment or estimated cost of the Change within a reasonable period (not to exceed 15 days after which Contractor is ordered to proceed under protest) either Party may
submit the matter for dispute resolution pursuant to Article 17.

10.7 Options for Implementing Changes. Whenever there
are different possible Changes that can be made in response to a Change Event and those Changes have different effects on the Project Schedule (including the Required Contract Dates), Fixed Component, the Craft Labor Hour Target, the Reimbursable
Component, the Target Total Work Cost, Performance Requirements or other obligations or liabilities of the Parties under this Agreement, then Owner may in its sole discretion (but consistent with the objective of achieving the lowest Total Work
Cost) select from among such Changes, with the concomitant adjustments to the Project Schedule (including the Required Contract Dates), Fixed Component, the Craft Labor Hour Target, the Reimbursable Component, and Performance Requirements and other
obligations or liabilities of the Parties under this Agreement in accordance with this Article 10.

10.8 Documentation.
All claims by Contractor for adjustments to the Fixed Component, the Craft Labor Hour Target, the Reimbursable Component, the Target Total Work Cost, Contractors fee, Performance Requirements, Project Schedule (including the Required Contract
Dates) and/or other obligations or liabilities of the Parties under this Agreement as a result of any Change shall be supported by verifiable detailed documentation provided to Owner.



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ARTICLE 11

FORCE MAJEURE

11.1 Force Majeure Event. As used in this Agreement, an event of
Force Majeure will mean any event that: (a) prevents or hinders the affected Party (the Affected Party) from performing its obligations under this Agreement or complying with any conditions required of it
under this Agreement, resulting in an actual delay in the performance of the Work, increases the cost of performing the Work, or otherwise materially and adversely affects the Affected Partys performance hereunder, (b) is beyond the
reasonable control of and not the result of the fault or negligence of the Affected Party (including such Affected Partys Personnel), (c) could not have been prevented by the exercise of reasonable diligence by the Affected Party or its
Personnel or Subcontractors and (d) occurs on or after September 1, 2008.

For purposes of clause (b) above, the following
events shall, by way of example, be considered to be beyond the reasonable control of an Affected Party: acts of God, war, civil insurrection, epidemic, earthquake, tornado, quarantine, hurricane and other natural disasters, terrorism and sabotage
(in each case, domestic and foreign) and the threat and results thereof, the complete unavailability of fuel (but not an increase in the cost of available fuel), public disorder, lightning and other abnormal or severe climatic conditions, national
or regional strikes or labor stoppages, strikes or labor stoppages by employees of Suppliers of Specially Manufactured Equipment, and imminent threat of any of the foregoing that could reasonably affect the safety or security of individuals on, or
damage to, the Project Site.

In no instance will the following be considered events beyond Contractors reasonable control or
constitute a Force Majeure event: (i) strikes or labor disturbances involving the Personnel of Contractor or any of its Subcontractors at the Project Site (unless such strike or labor disturbance is national or regional in nature or as
otherwise provided in Section 2.17 due to actions of Owner or entities acting on its behalf), (ii) weather other than as described in the second paragraph of this Section 11.1, (iii) any delay or failure of
Contractor to obtain Equipment or Materials because of the delay or failure of any Subcontractor to perform any obligation to Contractor, unless such delay or failure is caused (A) by strikes or labor stoppages by employees of the Supplier of
Specially Manufactured Equipment, or (B) by an independent event of Force Majeure, (iv) the failure of or delay in delivery in the issuance of Contractor Permits, unless such delay or failure is caused by an independent event of Force
Majeure, (v) Equipment and Materials failure, unless such failure is caused by an independent event of Force Majeure, (vi) domestic and/or foreign transportation delays, unless such delays are caused by an independent event of Force
Majeure, or involve Specially Manufactured Equipment or (vii) Excluded Changes in Law.



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11.2 Burden of Proof. The burden of proof as to whether a Force Majeure event has occurred and the
associated relief will be upon the Party claiming relief from such event.

11.2.1Excused Performance. The Affected
Party will not be held in default or be liable for delay or failure in performing its obligations hereunder because of a Force Majeure event if, and to the extent that (a) the Affected Party has taken reasonable alternative measures to mitigate
the consequences thereof, and (b) such Force Majeure event is not the result of any failure of the Affected Party to perform any of its obligations under this Agreement; provided, however, that the Affected Party gives Notice
within 10 Business Days after it became aware of the occurrence of such Force Majeure event. Such Notice will, to the extent practicable, specify the nature of the occurrence, the reasons why adjustments to this Agreement should be granted, and the
projected length of the delay occasioned by reason of such Force Majeure event. Within 10 Business Days after submission of such Notice, the Affected Party shall provide a more detailed Notice of the impact of the occurrence, its recovery plan (the
Preliminary Mitigation Plan) and a more detailed estimate of the effect on this Agreement. Such Notice will be updated as soon as possible after additional information becomes available to the Affected Party. Strict compliance
with this Section 11.2.1 is required.

11.2.2 Scope of Excused Performance. The suspension of performance
resulting from such Force Majeure event will be of no greater scope and of no longer duration than is reasonably required by the Force Majeure event.

11.2.3 Prior Obligations and Liabilities. No obligations or liability under this Agreement that arose before the occurrence of the Force Majeure event will be excused (except to the extent adversely
impacted by the Force Majeure event) as a result of the occurrence of such Force Majeure event for any period prior to the occurrence of such Force Majeure event.

11.2.4 Continued Performance. The Affected Party shall continue to perform its obligations under this Agreement to the maximum extent possible. When the Affected Party is able to fully resume performance
of its obligations hereunder, the Affected Party shall give Notice to the other Party to that effect and shall promptly resume such performance.

11.2.5 No Affect on Payment Obligations. Under no circumstance will an event of Force Majeure excuse a Partys obligations to make payments when due under this Agreement, unless such Force Majeure event results in a
failure of the Federal Reserve wire system or other failure of the banking system that deprives a Party access to otherwise available funds.



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ARTICLE 12

INDEMNIFICATION

12.1 Indemnity. To the fullest extent permitted by Applicable Legal
Requirements and subject to Section 12.5, Contractor hereby assumes liability for, and shall indemnify, defend and hold harmless Owner and its respective members, managers, partners, Affiliates, officers, employees, representatives,
agents, the Engineers, as well as the Financing Parties and their employees, officers, representatives and agents (collectively, the Owner Indemnitees) from and against all liability, claims, suits, actions, costs (including
reasonable attorneys fees, charges and disbursements), expenses, damages, losses, fines, interest, penalties, assessments, judgments, demands, causes of action, and other litigation of any kind and character (collectively
Claims) that may be imposed on, incurred by or asserted against any Owner Indemnitee to the extent arising out of (x) negligence or willful misconduct of Contractor, its Personnel or Subcontractors, and in any way relating to
or arising out of:



| | (a) | any bodily injury (including death) to any Person;
| | --- | --------------------------------------------------



| | (b) | any damage to the tangible property of third parties to the extent resulting from or in connection with the negligence or intentional misconduct of Contractor, any Subcontractor or
their respective Personnel or Affiliates;
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

or (y) fines, penalties, and costs imposed upon Owner or any Owner Indemnitee by any
Governmental Authority because of a violation by Contractor or its Subcontractors or either Contractors or Subcontractors Personnel of any Applicable Legal Requirements.

12.2 Obligations with Respect to Liens. Contractor shall indemnify, save harmless and defend the Owner Indemnitees from and against any and all
Contractor Liens (excepting Liens filed by Owner Suppliers) filed in connection with the performance of the Work, except to the extent Owner has failed to pay the amount properly due to Contractor in accordance with the terms hereof for Work in
respect to which a Lien has been filed, including all costs and expenses and attorneys fees, charges and disbursements incurred in discharging or defending such Contractor Liens, if and to the extent that Contractor was not justified in
withholding the payment underlying such Lien. Contractor shall cause such Contractor Lien to be canceled or discharged of record by the filing of a bond or otherwise or furnish Owner with a Contractor Lien Bond. If Contractor does not promptly
satisfy such Contractor Lien or fails to provide Owner with a Contractor Lien Bond in lieu thereof within the period specified in Section 5.6.1(b), then Owner may, after at least 10 days prior Notice to Contractor, cure or release such
Contractor Lien by payment of money or otherwise, and if Owner arranges a Contractor Lien Bond with respect to such Contractor Lien, Contractor shall reimburse Owner for the reasonable cost of arranging such Contractor Lien Bond, within 30 days
after request therefor by Owner.



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12.3 Obligations with Respect to Intellectual Property. Contractor shall fully indemnify, save
harmless and defend the Owner Indemnitees from and against any and all Claims for the infringement (actual or alleged) or misappropriation of any Intellectual Property, proprietary or confidentiality rights with respect to materials and information
designed, specified or used by any of Contractor or Contractors Personnel in performing the Work or in any way incorporated in or related to the Work, unless the infringing item was specified by Owner or arises from the infringement or
misappropriation of any Intellectual Property by an Owner Supplier. If, in any such Claim, a temporary restraining order or preliminary injunction is granted, then Contractor shall make every reasonable effort, by giving a satisfactory bond or
otherwise, to secure the suspension of the injunction or restraining order as soon as possible. If, in any such Claim, the Project, or any part, combination or process thereof, is held to constitute an infringement and its use is enjoined, then
Contractor, at Contractors sole option, cost and expense, shall either promptly (a) secure for Owner an irrevocable, royalty free, perpetual, non-exclusive license, at no cost to Owner, authorizing continued use of the infringing process,
item or other Work without impairing the performance or operating cost of the Project, or (b) either replace the affected Work or portion, combination or process thereof with non-infringing, without impairing the performance or operating cost
of the Project, components or parts or modify the same so that they become non-infringing; provided, however, that in connection with any such replacement or modification, Contractor shall be responsible for any Work necessary to
access the item to be replaced or modified, and any Work necessary to recover, finish or otherwise cover and return to full operating status the item to be replaced or modified and removing the item to be replaced or modified, or reinstalling the
item so replaced or modified, in each case as and to the extent necessary, to fully complete the replacement or modification of such item into the Project. Furthermore, if such Claim for infringement or misappropriation threatens to affect the
operation of the Project or any portion thereof in the reasonable judgment of Owner, Contractor shall promptly undertake the obligations set forth in the previous sentence. The foregoing notwithstanding, Contractors liability under this
paragraph for infringement or misappropriation by Suppliers supplying manufactured equipment to Contractor shall be limited to the remedies for infringement or misappropriation contained in the applicable Contractor Subcontract between Contractor
and such Supplier, so long as Contractor includes in such Contractor Subcontract an indemnity of Owner by the vendor substantially the same as the foregoing.

12.4 Owner Indemnity. To the fullest extent permitted by Applicable Legal Requirements and Section 12.5, Owner hereby assumes liability for, and shall indemnify, defend and hold harmless Contractor
and its members, managers, officers, Affiliates, employees, representatives, Subcontractors, and agents (collectively, the Contractor Indemnitees) from and against all Claims that may be imposed on, incurred by or asserted against
any Contractor Indemnitee and in any way relating to or arising out of (x) negligence of Owner and in any way relating to or arising out of:



| | (a) | any bodily injury (including death) to any Person;
| | --- | --------------------------------------------------



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| | (b) | any property damage (except where the risk of such damages has been assumed by Contractor elsewhere herein);
| | --- | ------------------------------------------------------------------------------------------------------------



| | (c) | either the presence of any Owner Hazardous Substances or the Release or threatened Release of any Owner Hazardous Substances, on or from the Project Site, except to the extent
caused by the Release or threatened Release by Contractor, any Subcontractor or their respective Personnel or Affiliates as described in Section 2.2.13.2; or
| | --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

(y) fines or penalties and the cost of any remedial requirements imposed on Contractor or its Subcontractors by any Governmental Authority because of a violation by Owner or any Owner Personnel of any Applicable Legal
Requirements; provided, however, that Owner will not be responsible for paying any portion of a fine that is imposed upon Contractor or its Subcontractors as a result of a prior violation for which Owner was not responsible.

12.5 Notice and Legal Defense. Promptly after receipt by a Owner Indemnitee or a Contractor Indemnitee (an
Indemnitee) of any Claim or notice of the commencement of any action, administrative or legal proceeding, or investigation in connection with an actual or potential Claim as to which any indemnity provided for in this
Article 12 or Section 2.2.13.2(d)may apply, the Indemnitee shall give Contractor or Owner, as the case may be, Notice of such fact; provided, however, that the failure to give such Notice will not relieve the
indemnifying Party of its obligations to indemnify the Indemnitee, except to the extent that the indemnifying Party is materially and adversely affected thereby. The indemnifying Party shall assume on behalf of the Indemnitee, and conduct with due
diligence and in good faith, the defense thereof with counsel reasonably satisfactory to the Indemnitee; provided, further, the Indemnitee shall have the right to be represented therein by counsel of its own selection and at its own
expense (such expense not to be subject to indemnification hereunder); provided, further, if the defendants in any such action include both the indemnifying Party and the Indemnitee, and if the Indemnitee has reasonably concluded that
there may be legal defenses available to it that are different from, additional to or inconsistent with those available to the indemnifying Party, then the Indemnitee will have the right to select separate counsel to participate in the defense of
such action on its own behalf. The indemnifying Party shall consult with each Indemnitee throughout the pendency of the Claim regarding the investigation, defense, settlement, compromise, trial, appeal or other resolution thereof, and without the
prior consent of each Indemnitee, the indemnifying Party shall not enter into any settlement of any Claim that would lead to liability, constitute an admission of liability, dismiss a Claim without prejudice, or create any financial or other
obligation on the part of any such Indemnitee for which such Indemnitee is not entitled to indemnification hereunder.



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12.6 Failure to Defend Action. If any Claim arises as to which any indemnity provided for in this
Article 12 or Section 2.2.13.2(d)may apply, and the indemnifying Party fails to assume the defense of such Claim with reasonable promptness after the receipt by the indemnifying Party of notification thereof, then the
Indemnitee against which the Claim is made, instituted or commenced may, at the indemnifying Partys expense, contest, or settle, such Claim, providing the indemnifying Party with reasonable advance Notice of any settlement decision. All costs
and expenses incurred by the Indemnitee in connection with any such contest, settlement or payment may be deducted from any amounts due to the indemnifying Party under this Agreement, with all such costs in excess of the amount deducted to be
reimbursed by the indemnifying Party to the Indemnitee promptly following, but not later than 15 days following, the demand therefor.

12.7 No Limitation to Workers Benefits. In any and all Claims against any Indemnitee by any employee of a Party or its Personnel, the indemnification obligations under Article 12 (except Sections 12.1(a)
and 12.4(a)) shall not be limited in any way by any limitation on the amount or type of damages, compensation or benefits payable by or for the Party under workers or workmens compensation acts, disability benefit acts or other
employee benefit acts.

12.8 Limitation on Indemnification. In no event shall the indemnification provisions of this
Article 12 or Section 2.2.13.2(d)require an indemnifying Party to provide indemnification under this Agreement for any Claim, loss, liability or other damage incurred by an Indemnitee to the extent caused by the negligence
or misconduct of such Indemnitee or to the extent such indemnification is prohibited under Applicable Legal Requirements.



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ARTICLE 13

REMEDIES AND TERMINATION

13.1 Termination for Convenience. Owner shall have the right, in
its sole discretion, to terminate this Agreement, including portions of the Work to be performed by Contractor hereunder, in each case for its sole convenience (without necessity of giving a reason to Contractor), at any time upon 2 Business
Days prior Notice thereof to Contractor. In the event of any termination for convenience by Owner pursuant to this Section 13.1 and compliance by Contractor of its obligations under Sections 13.1.2, 13.4.1 (as
applicable) and 13.4.3 in connection with such termination, Contractor shall be relieved of its obligations and liability under this Agreement with respect to this Agreement or the portion of Work so terminated from and after the date of such
termination.

13.1.1 Termination Payment. If this Agreement is terminated under this Section 13.1, then, subject
to Sections 13.1.1, 13.1.2, 13.4.1 (as applicable) and 13.4.3, as Contractors sole and exclusive remedy hereunder, Contractor will be entitled to payment of (a) the Fixed Component earned through the
effective date of termination, (b) all cancellation charges necessarily incurred by Contractor in relation to its Subcontractors, (c) an amount equal to other reasonable termination-related actual costs necessarily incurred by Contractor,
including its obligations under this Article 13, (d) reasonably incurred actual costs of demobilization, and (e) Sales Taxes properly paid by Contractor for which it has not been reimbursed (the Termination
Payment). Contractor shall calculate amounts due pursuant to this Section 13.1.1, which amounts will be subject to audit by Owner. Notwithstanding a termination hereunder, the Parties shall remain liable to each other for
liabilities that have accrued under other provisions of this Agreement prior to such termination, and provided, further, the Parties shall remain obligated and liable for obligations under this Agreement that by their express terms
survive termination. The Parties recognize, agree and acknowledge that Owners termination right hereunder is a permitted action under this Agreement and not a breach hereof or a default hereunder. Payment of the Termination Payment (or any
portion thereof) will be made by Owner within 30 days following an invoice therefor accompanied by reasonable documentation in support thereof.

13.1.2 Termination Obligations. The following shall be obligations of Contractor in connection with any full or partial termination of this Agreement: (a) Contractors execution and delivery of all documents and
taking reasonable steps, including the assignment of Contractors contractual rights, as Owner may require, for the purpose of fully vesting in Owner all right, title and interest of Contractor in and to all Subcontracts which Owner elects to
assume, warranties, guarantees, Work and other agreements pertaining to the Work that Owner elects to assume; provided, however, that such Work, upon transfer, will not be subject to Article 9, (b) Contractors
execution and delivery (and using reasonable commercial efforts to cause Subcontractors and Owner



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Suppliers to execute and deliver) to Owner of all waivers and releases, in form and substance reasonably acceptable to Owner, required to establish that the
Project and the Project Site, and any and all interests, estates or improvements related thereto, are free from any and all Liens arising out of or in connection with performance by Contractor, any Subcontractor or any Owner Supplier so terminated,
but only to the extent that (i) Contractor (or, in the case of any Owner Contract, an Owner Supplier) has been paid for such work in accordance with the terms of this Agreement or the Owner Contract, as applicable, and (ii) only with
respect to the portion of the Work so terminated, (c) Contractors prompt delivery to Owner of any other information reasonably requested by Owner, and (d) Contractors removal from the Project Site of all of Contractors
waste, debris, Personnel and property of Contractor (except as provided in Section 13.4.1).

13.1.3 Termination Due
to Force Majeure. Either Party shall have the right to terminate this Agreement at any time by giving Notice thereof to the other Party if the Work is suspended for more than 270 days due to Force Majeure, with such termination being handled
under this Section 13.1.

13.2 Termination Upon Contractor Event of Default. If a Contractor Event of Default occurs,
then Owner may, without prejudice to any other right or remedy Owner may have under this Agreement, at any time terminate this Agreement, such termination becoming effective as provided in Section 13.4.3. For purposes hereof, a
Contractor Event of Default shall occur if:



| | (a) | Contractor abandons or suspends progress of the Work for more than more than * days for any reason other than Force Majeure or as otherwise permitted by this Agreement;
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (b) | Contractor assigns or attempts to assign its rights or obligations under this Agreement or any part thereof to any Person without the prior written consent of Owner;
| | --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (c) | a Contractor Act of Bankruptcy occurs;
| | --- | --------------------------------------



| | (d) | Contractor does not perform any of its material obligations under this Agreement;
| | --- | ---------------------------------------------------------------------------------



| | (e) | Contractor fails or refuses to comply with any Applicable Legal Requirements applicable to Contractor under this Agreement, which failure or refusal could result in a material
adverse effect on Owner, the Work or the Project;
| | --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (f) | any representation or warranty made by Contractor herein or in any Application for Payment or other document submitted to Owner under this Agreement is false in any material respect
when made;
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| | (g) | Contractor fails or refuses to pay any amount that is due to Owner under this Agreement;
| | --- | ----------------------------------------------------------------------------------------



| | (h) | Contractor does not obtain and maintain the insurance required of it pursuant to Section 2.9; provided, however, that if Contractors failure to
maintain such insurance is caused by the bankruptcy of a carrier providing its insurance, without limiting Owners rights to procure insurance pursuant to Section 2.9, a Contractor Event of Default pursuant to this clause will not
occur if Contractors failure is rectified within 7 Business Days of such failure;
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (i) | Contractor fails or refuses or is unable at any time during the course of the Work, except in the event of Force Majeure event or during a suspension of the Work for reasons that
give Contractor the right under this Agreement to so suspend the Work, to provide or implement a Recovery Plan required hereunder to the reasonable satisfaction of Owner; or
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (j) | the Contractor Guaranty fails to be in full force and effect.
| | --- | -------------------------------------------------------------

Notwithstanding anything in this Agreement to the contrary, the events described in this Section 13.2 will not constitute a Contractor Event of Default unless and until: (i) Owner has given Notice to Contractor specifying
with particularity the existence of such default which, unless cured (if a cure period applies), constitutes a Contractor Event of Default that gives Owner a right to terminate its obligations to Contractor for cause under this
Section 13.2, and (ii) in the case of Sections 13.2(a), 13.2(d), 13.2(e), 13.2(f), 13.2(g) or 13.2(i) only, Contractor has failed to cure such default within 30 days after receipt of
such Notice, or in the case such default cannot be cured within 30 days, has failed within 30 days to initiate and thereafter diligently and continuously pursue actions reasonably likely to cure such default within an additional 90 days.

13.3 Termination for Agreed Circumstances. Owner has the right, in its sole discretion, to terminate this Agreement or any portion hereof at
any time by giving Notice thereof to Contractor upon the occurrence of any of the following events:



| | (a) | Final Completion does not occur within * days following the Target Final Completion Date; or
| | --- | --------------------------------------------------------------------------------------------



| | (b) | Substantial Completion does not occur within * months following the Required Substantial Completion Date; or
| | --- | ------------------------------------------------------------------------------------------------------------



| | (c) | Contractor is not obligated to pay amounts otherwise owed to Owner hereunder due to its limitation on liability set forth in Section 16.1and the Project is more than *
days behind Schedule.
| | --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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13.4 Consequences of Termination; Actions upon Termination.

13.4.1 Assumption and Succession. Upon any termination pursuant to this Article 13, in addition to any other rights or remedies
that Owner may have under this Agreement, Owner may at its option elect to: (a) assume responsibility for and take title to and possession of the Project and any or all work, Materials or Equipment remaining at the Project Site that are part of
the Work, Construction Aids and any and all other Materials or Equipment located outside the Project Site that are part of the Work, with suitable compensation therefor; provided, however, that such Work, upon transfer, will not be
subject to Article 9, and (b) succeed to the interests of Contractor in any or all Subcontracts (including leases). Upon termination of this Agreement by Owner in accordance with this Article 13, if requested by Owner,
Contractor shall (a) withdraw from the Project Site, and (b) as requested by Owner in writing, assign one or more of its Contractor Subcontracts to Owner or any designee of Owner; provided, however, that such assignee assumes
the obligations of Contractor thereunder and Contractor is relieved of liability thereunder for work performed, services rendered and obligations incurred after the date of assumption of such Contractor Subcontract by Owner, and (c) turn over
to Owner any Submittals prepared prior to such termination and any Materials, Equipment, and any other designs, purchase orders prepared or ordered prior to such termination, and any tools, schedules, computer files and drawings (in native or
original format) that are part of the Work, with suitable compensation therefor (to the extent not previously paid but subject to Section 13.4.2). Owner may employ any other Person (hereinafter, a Replacement
Contractor) to finish the Work in accordance with the terms of this Agreement by whatever method that Owner may deem expedient. In addition, Contractor shall not remove any Equipment, Materials or tools that (w) have been fabricated
especially for or are unique to the Project, (x) are incorporated in or are attached to, or are intended to be incorporated in or attached to, the Project, (y) constitute temporary or permanent scaffolding or supporting elements for the
construction of the Project, or (z) the removal of which could damage the Project or any portion thereof then constructed, or otherwise materially adversely affect or delay the construction, use or maintenance of the Project, with suitable
compensation therefor (to the extent not previously paid but subject to Section 13.4.2). Contractor shall not have any further responsibility therefor upon such termination.

13.4.2 Completion of the Work. In the event of any termination for a Contractor Event of Default, Owner may, at its option
and at its expense, finish the Work by whatever method Owner reasonably deems expedient; provided, however, that, as Contractors sole liability on account of such termination, Contractor shall be liable to Owner for the
reasonable costs of cover and transitioning the Work to the Replacement Contractor. Owner shall be entitled to withhold payments which Contractor determines are due to it prior to the date of termination, along with other amounts for which
Contractor is entitled to compensation under Section 13.4.1, until completion of the Work and determination by Owner that Contractor is entitled to such payments. Any amounts not paid hereunder if ultimately due shall bear interest at
the Late Payment Rate. Owner may in its discretion employ the Replacement Contractor to finish



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the Work by whatever method or means Owner in its discretion may deem expeditious; provided, however, that the balance of Work will be
completed utilizing reasonable methods of construction management and construction consistent, to the maximum feasible extent, with the Project Schedule and as otherwise provided herein. In the event that any termination of this Agreement by Owner
because of a Contractor Event of Default pursuant to Section 13.2 is later adjudicated to have been improper, then Contractor shall be entitled to recover such amounts as Contractor is entitled to under Section 13.1.

13.4.3 Actions Upon Termination. Upon receipt of Notice from Owner of termination of this Agreement pursuant to either
Section 13.1, Section 13.2 or Section 13.3, Contractor shall: (a) cease performance of the Work to the extent directed by Owner in the Notice and complete necessary demobilization in connection with such
termination, (b) take all actions that Owner may direct, for the protection and preservation of the Work and the Project (in whatever stage of completion), (c) transition the administration of the Owner Contracts to Owner, (d) enter
into no further Subcontracts related to the Project or the Work, and (e) at Owners instruction, assign its rights under any or all Subcontracts to Owner or Owners designee. In addition, upon any such termination of this Agreement,
Contractor shall be relieved of its obligation for performance under any Subcontracts assigned to Owner or its designee for work performed, services rendered or materials or equipment supplied after the effective date of such assumption. The
effective date of any termination of this Agreement pursuant to this Article 13 shall be the date established in the Notice of such termination delivered by the Party exercising its termination right hereunder.

13.5 Owner Monetary and Non-Monetary Defaults; Contractor Draw Conditions on Pre-Financial Closing Letter of Credit.

13.5.1 Non-Payment. If Contractor has not received any undisputed payment due it hereunder within 10 days after Contractor has provided
Notice to Owner of its failure to make the specified payment when due and owing or if an Owner Act of Bankruptcy occurs, then Contractor may stop Work until such Owner default is cured, at which time Contractor shall re-commence performance of the
Work in a timely fashion. If (a) Contractor has not received any undisputed payment within 30 days after the date such payment is due (b) if an Owner Act of Bankruptcy continues for more than 30 days, or (c) Contractor draws on the
letter of credit placed pursuant to the Letter Agreement or, if replaced by the Pre-Financial Closing Letter of Credit, the Pre-Financial Closing Letter of Credit because Owner has not extended or replaced it before its expiration, then Contractor
may terminate this Agreement upon providing Notice of termination to Owner. In the event of such termination, Contractor shall receive compensation in accordance with Section 13.1.1 (together with any payment that has accrued but has not
been paid to it under this Agreement as of the date of such termination) as its sole remedy and the exclusive damages resulting from such termination.



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13.5.2 Non-Monetary Default. If any Owner Event of Default (other than a payment default as
described in Section 13.5.1 above) occurs, then (a) to the extent such Owner Event of Default materially and adversely affects Contractors ability to achieve any of the Required Contract Dates, increases Contractors cost
to perform the Work or otherwise adversely affects the provisions of this Agreement, Contractor, if it so requests, shall be entitled, and Owner shall execute, a Change Order as provided in Section 10.3, 10.4, 10.5 and
10.7(b) Contractor shall be entitled to any other right or remedy permitted under this Agreement (other than termination if such Owner Event of Default can be fully cured by a Change Order issued in accordance with
Article 10 and in compliance with Applicable Legal Requirements) as a result of such Owner Event of Default, and (c) Contractor shall be entitled to suspend its performance of the Work, such suspension to become effective upon
Owners receipt of Notice thereof from Contractor. Owner Events of Default shall occur if:



| | (a) | Owner fails or refuses to comply with any Applicable Legal Requirements under this Agreement, which failure or refusal results in a material adverse effect on Contractor;
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (b) | any representation or warranty made by Owner herein or in any other document submitted to Contractor under this Agreement is false in any material respect when made;
| | --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (c) | Owner fails to perform any of its material obligations under this Agreement;
| | --- | ----------------------------------------------------------------------------



| | (d) | Owner fails to maintain insurance required hereunder; provided, however, that if Owners failure to maintain such insurance is caused by the bankruptcy of a
carrier providing its insurance, an Owner Event of Default pursuant to this clause will not occur if Owners failure is rectified within seven (7) Business Days of such failure;
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (e) | Owner makes an assignment in violation of the provisions hereof; or
| | --- | -------------------------------------------------------------------



| | (f) | the Owner Guaranty fails to be in full force and effect.
| | --- | --------------------------------------------------------

Notwithstanding anything in this Agreement to the contrary, the events described in the definition of an Owner Event of Default will not constitute a Owner Event of Default, unless and until: (i) Contractor has given Notice to Owner
specifying with particularity the existence of such event that, unless corrected (if a cure period applies), constitutes an Owner Event of Default, and (ii) in the case of Sections 13.5.2(a), (b), (c), or (f),
such default has not been cured within 30 days after receipt of such Notice, or in the case that such default cannot be cured within 30 days, Owner has not within 30 days initiated or caused to be initiated and thereafter diligently



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pursued actions reasonably likely to cure such default within an additional 90 days; provided, however, if the event described in
Section 13.5.2(f) occurs and Owner has not provided the reasonable evidence therein required within 10 days of Notice by Contractor, Contractor may suspend performance of the Work until such evidence is provided or it has the right to
terminate upon Owners failure to cure as hereinbefore provided.

13.5.3 Draw Conditions for Pre-Financial Closing Letter of
Credit and Letter Agreement. In addition to any other draw rights expressed in the Pre-Financial Closing Letter of Credit and under the Letter Agreement, in the event of an Owner payment default pursuant to Section 13.5.1 occurring
prior to the Financial Closing, Contractor shall have the right, without limiting any of its other rights herein, to draw on the letter of credit placed pursuant to the Letter Agreement or, if replaced by the Pre-Financial Closing Letter of Credit,
the Pre-Financial Closing Letter of Credit to the extent necessary to immediately recover the amount of outstanding unpaid and undisputed Contractor invoices, and any such draw shall satisfy such payment default amount so drawn. Further, at any time
Contractor has a right to terminate this Agreement prior to Financial Closing, Contractor may immediately draw the full amount of the letter of credit placed pursuant to the Letter Agreement or, if replaced by the Pre-Financial Closing Letter of
Credit, the Pre-Financial Closing Letter of Credit to secure funds for payment of amounts due Contractor under Section 13.1.1.

13.6 Duty to Mitigate Damages. Each Party shall have the duty to mitigate damages to it arising from any default hereunder by the other Party.



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ARTICLE 14

SECURITY

14.1 Guarantees. Owner shall furnish to Contractor the Owner Guaranty on the
Commencement Date. Contractor shall furnish to Owner the Contractor Guaranty on the Commencement Date. The Owner Guaranty shall remain in effect until the earlier of (a) Financial Closing and (b) the date on which Owner has fully performed
all of its obligations to Contractor under this Agreement. The Contractor Guaranty shall remain in effect until Contractor has fully performed all of its obligations to Owner under this Agreement.



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ARTICLE 15

REPRESENTATIONS AND WARRANTIES

15.1 Representations and Warranties of Contractor. Contractor
hereby represents and warrants to Owner as follows:



| | (a) | Due Organization of Contractor. Contractor is a limited liability company duly organized, validly existing and in good standing under the laws of the State of Delaware, and
has all requisite power and authority to own and operate its business and properties and to carry on its business as such business is now being conducted and is duly qualified to do business in the State of Louisiana and in any other jurisdiction in
which the transaction of its business makes such qualification necessary;
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (b) | Due Authorization of Contractor; Binding Obligation. Contractor has full power and authority to execute and deliver this Agreement and to perform its obligations hereunder,
and the execution, delivery and performance of this Agreement by Contractor have been duly authorized by all necessary action on the part of Contractor. This Agreement has been duly and validly executed and delivered by Contractor and, assuming due
execution and delivery by Owner, constitutes the legal, valid and binding obligation of Contractor enforceable against Contractor in accordance with its terms, except as such enforcement may be limited by (i) bankruptcy, insolvency,
reorganization, moratorium or other similar laws relating to or affecting the enforcement of creditors rights in an action (whether considered in an action at law or in equity) generally, or (ii) general equitable principles (whether
considered in any action at law or in equity);
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (c) | Non-Contravention. The execution, delivery and performance of this Agreement by Contractor and the consummation of the transactions contemplated hereby do not and shall not
contravene the governing documents of Contractor and do not and shall not conflict with or result in a breach of or default under any indenture, mortgage, lease, agreement, instrument, judgment, decree, order or ruling to which Contractor is a party
or by which it or any of its properties is bound or affected;
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (d) | Regulatory Approvals. All governmental or other authorizations, approvals, orders or consents required in connection with the execution, delivery and performance of this
Agreement by Contractor have been obtained or shall be obtained in due course; and
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (e) | Intellectual Property. Contractor has the right to grant all of the Intellectual Property rights it has purported to grant under this Agreement.
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------



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15.2 Representation and Warranties of Owner. Owner hereby represents and warrants to Contractor as
follows:



| | (a) | Due Organization of Owner. Owner is a limited liability company duly organized and validly existing and in good standing under the laws of the State of Delaware and has all
requisite power and authority to own and operate its business and properties and to carry on its business as such business is now being conducted and is duly qualified to do business in the State of Louisiana;
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (b) | Due Authorization of Owner; Binding Obligation. Owner has full power and authority to execute and deliver this Agreement and to perform its obligations hereunder and the
execution, delivery and performance of this Agreement by Owner have been duly authorized by all necessary limited liability company action on the part of Owner. This Agreement has been duly and validly executed and delivered by Owner and, assuming
due execution and delivery by Contractor, constitutes the legal, valid and binding obligation of Owner enforceable against Owner in accordance with its terms, except as such enforcement may be limited by (i) bankruptcy, insolvency,
reorganization, moratorium or other similar laws relating to or affecting the enforcement of creditors rights in an action (whether considered in an action at law or in equity) generally, or (ii) general equitable principles (whether
considered in any action at law or in equity);
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (c) | Regulatory Approvals. All governmental or other authorizations, approvals, orders or consents required in connection with the execution or delivery of this Agreement by Owner
have been obtained; and
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (d) | Non-Contravention. The execution, delivery and performance of this Agreement by Owner and the consummation of the transactions contemplated hereby do not and shall not
contravene the certificate of formation or limited liability company agreement of Owner and do not and shall not conflict with or result in a breach of or default under any indenture, mortgage, lease, agreement, instrument, judgment, decree, order
or ruling to which Owner is a party or by which it or any of its properties is bound or affected.
| | --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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ARTICLE 16

LIMITATIONS OF LIABILITY

16.1 Limitation of Contractors Liability for Liquidated
Damages.

16.1.1Aggregate Limitation for Liquidated Damages. To the fullest extent permitted by Applicable Legal
Requirements, Contractors overall cumulative liability for liquidated damages to Owner arising under Sections 8.3and 8.4 will in no event exceed an amount equal to * percent (*%) of the Total Contractor Compensation, and Owner
releases Contractor from, and waives all right of recovery against Contractor for, any damages beyond such limit of liability for defaults specified in Sections 8.3and8.4.

16.1.2Aggregate Limitation for Delay Liquidated Damages. To the fullest extent permitted by Applicable Legal Requirements,
Contractors overall cumulative liability for delay liquidated damages to Owner arising under Section 8.3 will in no event exceed an amount equal to * percent (*%) of the Total Contractor Compensation, and Owner releases Contractor
from, and waives all right of recovery against Contractor for, any damages beyond such limit of liability for defaults specified in Section 8.3.

16.1.3Aggregate Limitation for Performance Liquidated Damages. To the fullest extent permitted by Applicable Legal Requirements, Contractors overall cumulative liability for performance liquidated
damages to Owner arising under Section 8.4 will in no event exceed an amount equal to * percent (*%) of the Total Contractor Compensation, and Owner releases Contractor from, and waives all right of recovery against Contractor for, any
damages beyond such limit of liability for defaults specified in Section 8.4.

16.1.4Individual Limitations for
Performance Liquidated Damages. Notwithstanding the provisions of Section 16.1.3 above, to the fullest extent permitted by Applicable Legal Requirements, Contractors liability for the following performance liquidated damages to Owner
arising under Section 8.4 shall in no event exceed amounts equal to the following amounts, and Owner releases Contractor from, and waives all right of recovery against Contractor for, any damages beyond such limit of liability for
defaults specified in Section 8.4:

16.1.4.1Lime Consumption Requirement as described in
Section 8.3.1.3* Dollars ($*); and

16.1.4.2Net Electrical Output Requirement as described in
Section 8.3.1.4* Dollars ($*).

16.2 Consequential Damages. In no event will either Party (or its Affiliates) be
liable to any other Party, Affiliate, or to Contractors Subcontractors for any special, incidental, indirect, exemplary, punitive, or consequential costs or damages of any nature



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(including damages from the use of or loss of any facility, equipment or property; loss of anticipated profits or revenues; loss of opportunity; loss of
productivity; loss of shop space; claims of customers; costs of obtaining or maintaining loans or debt service payable thereunder; or loss of goodwill). The foregoing limitation is not intended to limit a Partys liability to any Person
indemnified under this Agreement for claims of a third party. The Parties agree that any liquidated damages provided for under this Agreement or the direct damages of Owner payable by Contractor in connection with termination of this Agreement
because of a Contractor Event of Default will not be considered special, incidental, indirect or consequential costs or damages under this Section 16.2.

16.3 Overall Limitation of Liability. The total aggregate liability of Contractor to Owner, the Financing Parties, or any other party claiming
through either of them hereunder on claims of any kind in any way arising out of the Work or Contractors alleged breach of this Agreement, shall in no case exceed an amount equal to * percent (*%) of the Total Contractor Compensation for
(a) after Contractor has conducted a Performance Test, but failed to achieve the minimum requirements necessary to successfully pass such Performance Test, amounts expended on rework, repair, replacement or other modifications and
additional work to correct defects or errors for which Contractor is financially responsible under the terms of the Agreement, and (b) all liquidated damages paid by Contractor to Owner pursuant to Article 8 or (c) other damage or
liability amounts paid to Owner hereunder; provided that such limitation of liability shall not apply to or limit Contractors liability:



| | (i) | for any loss, claim or damage suffered or sustained due to willful misconduct of Contractor or any Subcontractor;
| | --- | -----------------------------------------------------------------------------------------------------------------



| | (ii) | for any indemnity obligation of Contractor under Article 12;
| | ---- | ------------------------------------------------------------



| | (iii) | with respect to any claims against Owner by any Subcontractor of Contractor;
| | ----- | ----------------------------------------------------------------------------



| | (iv) | for any failure of Contractor to obtain or maintain the insurance required under Article 2.9 hereof; and
| | ---- | --------------------------------------------------------------------------------------------------------



| | (v) | before Contractor has conducted a Performance Test, but failed to achieve the minimum requirements necessary to successfully pass such Performance Test, amounts expended on rework,
repair, replacement or other modification and additional work to correct defects or errors for which Contractor is financially responsible under the terms of the Agreement.
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

16.4. Application. Limitations and waivers of liability, releases from liability and exclusive remedies provided for herein will be applicable,
valid and enforceable irrespective of whether any claim or liability is based on breach of contract, breach of warranty, indemnity, tort (including negligence) or any other legal theory, and benefits thereof will extend to each Party and its
members, officers, directors, Affiliates and Personnel. This paragraph shall survive the completion or any termination of this Agreement.



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ARTICLE 17

DISPUTE RESOLUTION

17.1 Dispute Resolution Between the Parties.

17.1.1Cooperation. Owner and Contractor desire that this Agreement operate between them fairly and reasonably. If any disputes,
differences, or questions (collectively, Disputes) arise between the Parties in respect of this Agreement or the subject matter hereof, representatives of the Parties shall cooperate, in good faith, to attempt to amicably resolve
the Dispute. If any Party believes that such representatives will not be able to resolve the Dispute, such Party may invoke the further dispute resolution procedures of this Section 17.1 and of Section 17.2.

17.1.2Management Discussions. If representatives of the Parties cannot resolve a Dispute within 15 days, each Party shall prepare a
written statement of its position and deliver it to the other Party within 10 days after the expiry of the initial 15 day period, and one or more senior officers from each Party shall meet in person within 15 days in an effort to resolve the
Dispute. If the senior officers of either Party determine at any time that the Dispute cannot be resolved without referral of the Dispute to an independent third party, such Party shall notify the other Party that it wants to submit the Dispute to
mediation or arbitration in accordance with Sections 17.1.3 or 17.2, respectively; provided, however, that no Party shall seek arbitration of any Dispute until a period of at least 20 days has elapsed since the
Dispute was referred to such senior officers, without a resolution having been reached. The pendency of a Dispute shall not delay progress of the Work or relieve either Party from its duty to perform its obligations under this Agreement.

17.1.3Voluntary Mediation. If a Dispute cannot be resolved by the Parties pursuant to Sections 17.1.1 or 17.1.2, the
Parties shall endeavor to resolve such Dispute by mediation which, unless a Party objects to mediation by giving Notice to the other Party prior to commencement of the mediation, shall be a condition precedent to arbitration. Unless the Parties
mutually agree otherwise, mediation shall be in accordance with the then-current Construction Industry Mediation Procedures of the American Arbitration Association. Requests for mediation shall be filed in writing with the other Party and with the
American Arbitration Association.

17.2 Arbitration.

17.2.1Rules and Arbitrators. All Disputes that cannot be resolved by the Parties pursuant to Section 17.1 shall be exclusively and finally settled by self-administered arbitration with 3
arbitrators conducted in accordance with the then current Construction Industry Arbitration Rules of the American Arbitration Association or any successor thereto (the Rules), except as modified herein. Each Party to the
arbitration shall select one arbitrator and the 2 arbitrators selected by the Parties shall select a third arbitrator within 15 days. If the 2 arbitrators fail to reach agreement on the third arbitrator within such time limit, either Party may



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initiate the selection of the third arbitrator by resort to the American Arbitration Association. In any proceeding conducted under this
Section 17.2 by the American Arbitration Association, (a) no discovery shall be allowed with respect to appointment of an arbitrator and limited discovery shall be allowed with respect to disqualification of an arbitrator,
(b) the arbitration hearing may be scheduled upon not less than 10 days prior written notice to the Parties and shall not exceed 3 days in length, (c) direct testimony shall be presented by the Parties solely through written submissions,
and (d) the final decision shall be rendered within 30 days of submission of the matter for arbitration.

17.2.2Impartiality, Independence and Qualifications of Arbitrators. Each person serving as an arbitrator (including the arbitrators selected by each Party) shall be impartial and independent third parties, shall perform his or her duties with
diligence and in good faith, and have practiced law as a licensed attorney for at least 20 years and have substantial legal experience in connection with the design, construction and operation of fossil fuel-fired electric generating facilities. If
a person with such expertise is not reasonably available, then an arbitrator with at least 20 years experience in the design, construction and operation of equivalent heavy industry experience (e.g. refineries, chemical facilities, etc.) may be
selected. Upon objection of a Party, under the Rules, to the appointment or continued service of an arbitrator, the Parties shall attempt to reach agreement upon such disqualification and, in the absence of such agreement, shall submit the matter to
arbitration in accordance with this Section 17.2 for resolution. If a Party-appointed arbitrator is disqualified, his or her replacement shall be selected by the Party appointing the original arbitrator. If the third arbitrator is
disqualified, his or her replacement shall be selected in accordance with the procedure outlined in Section 17.2.1.

17.2.3Costs and Discovery. Subject to the remaining terms of this Agreement, each Party shall bear the cost of the arbitrator which it selects and the Parties shall equally bear all other costs of arbitration, including the cost of the third
arbitrator. If the arbitrators find that a frivolous claim has been pursued by a Party or a Party engages in egregious conduct, the arbitrators may award all (or any portion) of any expenses of arbitration incurred in connection with the Dispute
(including attorneys fees, charges, disbursements, expenses of expert witnesses and fees of the arbitrators) to the Parties in such proportion as may be determined by the arbitrators. The arbitrators may permit and/or limit the scope of
discovery as may be reasonable under the circumstances. Time is of the essence in any Dispute, and the arbitrators shall be permitted to issue monetary sanctions against any Party if, upon a showing of good cause, such Party is unreasonably delaying
the proceedings. In no event shall any costs incurred by Contractor in participating in dispute resolution proceedings hereunder constitute a cost under the Reimbursable Component.

17.2.4Limitations. No Party shall submit a Dispute to arbitration when institution of legal or equitable proceedings based on such Dispute
would be barred by the applicable statute of limitations. The arbitrators may not amend or modify this Agreement, enter an award for damages that are prohibited hereunder or limit any of the remedies set forth in this Agreement.



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17.2.5Additional Relief. Nothing in this Article 17 will preclude any Party
from taking (or requesting any judicial or other authority to order) any measure in aid of arbitration prior to the commencement of or during the arbitration proceedings for the preservation of its rights and interests.

17.2.6Venue and Timing. The arbitration shall take place in New Orleans, Louisiana, and shall be conducted in English. The arbitrators
shall render their award (the Award) within 180 days from submission of the Dispute to arbitration. The Award shall be final and binding on the Parties hereto and non-appealable and may be confirmed and enforced in any court of
competent jurisdiction, unless the Award is procured by corruption or fraud. Except as provided in this Section 17.2, each Party hereby excludes and waives irrevocably any rights or application or appeal to the courts of any jurisdiction
to the fullest extent permitted by Applicable Legal Requirements. The court may correct the Award before confirmation, if (a) there was manifest error in any mathematical calculation or manifest error in the description of any Person, thing or
property referred to in the Award, (b) the arbitrators exceeded their powers by including in the decision or award a matter not submitted to them and the decision or award may be corrected without affecting the merits of the decision upon the
matter submitted, and (c) the Award is imperfect in a matter of form, which can be corrected without affecting the substance of the Award. If an Award is vacated, the matter will be resubmitted for resolution according to the terms of this
Agreement.

17.2.7Continued Performance. Unless otherwise agreed in writing, Contractor shall continue to perform the Work
and Owner shall continue to make payments, both in accordance with this Agreement, pending the resolution of any Dispute hereunder.

17.2.8Consolidation. The Parties agree that if a third party (including an Owner Supplier or a Subcontractor) is substantially involved in a common question of fact or law or whose presence is necessary if complete relief is
to be afforded and/or inconsistent decisions are to be avoided, then the Parties will use their respective reasonable efforts to consolidate such third party into the dispute resolution process herein contained, making such accommodating adjustments
as are fair and appropriate to accommodate additional parties; provided, however, that such third party has consented to such inclusion and agrees to be bound by the Award of the arbitrators.

17.2.9When Inapplicable. The provisions relating to mandatory arbitration will not be applicable to a claim asserted in an action in court
by a person who is under no obligation to arbitrate such claim with either of the Parties to this Agreement insofar as the Parties to this Agreement may desire to assert any rights of indemnity or contribution with respect to the subject matter of
such action.



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17.2.10Cross Examination. Testimony may be admitted by sworn affidavit; provided,
however, that the opposing Party must be given the right to cross-examine any witness whose testimony is so admitted.

17.2.11Survival. The provisions of this Article 17 will survive the expiration or earlier termination of this Agreement.



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ARTICLE 18

CONFIDENTIALITY

18.1 Confidential Information. Each of the Parties has a proprietary
interest in information that will be furnished pursuant to this Agreement. The Parties shall keep in confidence and will not disclose any such information which in good faith is proprietary and which is specifically designated in writing as being
proprietary (Confidential Information) without the prior written permission of the disclosing Person (the Disclosing Party) or use any such information for other than the purpose for which it is supplied, except
as provided herein. Information relating to commercial terms of this Agreement shall also be treated as Confidential Information; provided, however, that such obligation is not intended to restrict Owner from use of the form of
agreement. Each Party agrees that the other Party may disclose any Confidential Information to its or their consultants, representatives and to such other persons, including the Financing Parties and potential owners or Affiliates, as may be
necessary to perform its or their obligations under this Agreement or any document related to the Project or the Financing thereof to which it is a party or, in the case of Owner, to develop, finance or sell an interest in the Project or any entity
owning an equity interest directly or indirectly in the Project. Each Party shall be responsible for requiring any third party (excluding such Partys (or its Affiliates), officers, directors, members, managers, employees and counsel who, in
each case, will be informed of the requirement to comply with the terms of this Section 18.1) to which it wishes to disclose Confidential Information to enter into a confidentiality agreement on substantially the terms of this
Article 18 or, in the case of Financing Parties, if Owner is unable to get any Financing Party to agree to such terms after expending a reasonable effort to do so, on reasonable terms and conditions that are customary for confidentiality
agreements for similarly situated parties receiving proprietary information comparable to the Confidential Information; provided, however, that if a third party (a party other than Owner, or its Affiliates, officers, directors,
members, managers, employees and counsel) has agreed in a writing provided to Contractor to maintain the confidentiality of Confidential Information in connection with the Project, such third party shall not be required to enter into another
confidentiality agreement pursuant to this Article 18. Each Party agrees with respect to Confidential Information, to hold the same confidential for the shorter of a period of 5 years from receipt or for a period of 3 years from the
earlier to occur of termination or Final Completion. The provisions of this Article 18 shall not apply



| | (a) | to information which the receiving Person (the Receiving Party) can substantiate:
| | --- | -----------------------------------------------------------------------------------



| | (i) | was in the possession of the Receiving Party at the time it was initially furnished, without a breach of this provision;
| | --- | ------------------------------------------------------------------------------------------------------------------------



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| | (ii) | is or becomes part of the public domain without a breach of this provision;
| | ---- | ---------------------------------------------------------------------------



| | (iii) | is received from a third party who is, as far as reasonably can be determined, under no limitation or restriction regarding disclosure; or
| | ----- | ------------------------------------------------------------------------------------------------------------------------------------------



| | (iv) | information the Disclosing Party authorizes the Receiving Party to describe.
| | ---- | ----------------------------------------------------------------------------

Such information shall not be deemed to be within one of the foregoing exceptions if it is merely embraced by more general information available on a non-confidential basis to the Receiving Party;



| | (b) | to the extent that a Receiving Party is required to disclose Confidential Information pursuant to Applicable Legal Requirements (including in connection with a Financing), or uses
information in connection with any legal proceeding or Dispute under Article 17 hereof; provided, however, that promptly upon a Receiving Party becoming aware that Confidential Information may be required to be disclosed
pursuant to Applicable Legal Requirements, the Receiving Party gives Notice to the other Party and, in consultation with the Disclosing Party, takes reasonable steps to make the Disclosing Partys Confidential Information subject to reasonably
available procedures for maintaining its confidentiality; or
| | --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (c) | to any Record Documents or other Submittals related to the Project to the extent disclosure thereof is reasonably necessary in connection with the design, engineering, construction,
operation, maintenance, improvement, modification, expansion or other activity related to the Project; provided, however, that Owner shall require the recipient of Confidential Information contained therein to maintain the
confidentiality of such Confidential Information on terms substantially similar to the terms of this Article 18 and to limit use of such Confidential Information to the Project.
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

18.2 Publicity. Contractor agrees that all public relation matters arising out of or in connection with the Work will be the sole responsibility
of Owner. Therefore, Contractor shall obtain Owners prior written approval of the text of any announcement, publication, technical report, article, photograph or any other media release, or general public communication concerning the Work that
specifically mentions Owner or any of its Affiliates or the Project or the Project Site or any of the Financing Parties which Contractor or its Subcontractors or any of their respective Affiliates wish to release for publication. Contractor shall
include in each Contractor Subcontract a provision requiring each Subcontractor to adhere to the requirements of this Section 18.2. Owner shall obtain Contractors prior written approval of the text of any announcement, publication,
technical report, article, photograph or any other media release or general public communication concerning the Work that specifically mentions Contractor or any of its Affiliates which Owner wishes to release for publication.



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18.3 Prior Confidentiality Agreements. The provisions of this Article 18 supersede all
prior agreements (including confidentiality obligations under the Letter of Intent) between Contractor and Owner regarding the confidentiality of any information or documents regarding the Project or the matters described in this Agreement. Any such
prior agreements between the Parties or their respective predecessors or Affiliates shall have no force or affect on or after the Effective Date.

18.4 Injunctive Relief. The Parties agree that both injunctive relief and monetary damages, alone or in combination, are appropriate remedies for any breach of this Article 18 by the other Party, its partners, parents,
subsidiaries or affiliates, or the employees, agents or consultants of any of them.



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ARTICLE 19

COST RECORDS

19.1 Records. Contractor shall maintain fiscal records, books and accounts
pertaining to the Project in accordance with generally accepted accounting principles consistently applied.

19.2 Inspection of Books,
Records and Audit Rights. Contractor shall keep and maintain full, complete and detailed records, books, accounts and invoices of all of its costs and expenses relating to any Application for Payment and any costs incurred or payments made by or
to it pursuant to this Agreement or in connection with the Work. At all times during the progress of the Work and for a period of 2 years after the Final Completion Date, or, if the Final Completion Date does not occur, for 2 years after the
termination of this Agreement, Contractor shall afford Owner and its respective auditors and counsel, access at reasonable times to any of the above books and records relating to amounts paid to Contractor on the basis of its costs or damages
(including indemnifications) in order to inspect, copy and audit the same or to verify compliance by Contractor with all of the terms and conditions of this Agreement; provided, however, that the right to inspect, access, copy and/or
audit Contractors books, records, invoices, and accounts shall not extend to agreed rates, agreed lump sum amounts, agreed allowances or to the internal composition of amounts (such as wage markups) expressed as a percentage of other costs.



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ARTICLE 20

MISCELLANEOUS

20.1 Authorized Representatives. In order to secure effective cooperation and
to deal on a prompt and orderly basis with the various scheduling and administrative issues that may arise in connection with the rights and obligations of the Parties hereunder, each Party shall appoint its own authorized representative
(Authorized Representative) and notify the other Party in writing of such representatives name, address, facsimile and telephone number within 10 days after the execution of this Agreement. Either Party may, at any time,
change the designation of its Authorized Representative; provided, however, that such Party shall promptly notify the other Party in writing of such change. Each Partys Authorized Representative shall be authorized to amend this
Agreement (including the execution of Change Orders) on behalf of the designating Party and agree upon procedures and provide such information as is necessary for coordinating the efforts of the Parties.

20.2 Assignment/Delegation.

20.2.1Assignment/Delegation by Contractor. Except as provided in Sections 20.2.2 or 20.17, it is expressly understood and agreed that this Agreement is personal to each of the Parties hereto, and that
neither Party shall have the right, power or authority to assign or delegate its rights or obligations under this Agreement or any portion thereof, either voluntarily or involuntarily, or by operation of law without the written consent of the other
Party, except that a Partys rights to payments hereunder may be assigned without the other Partys consent and except as provided in Section 20.17(a)(iii). Notwithstanding the above, Contractor may have portions of the Work
performed by its Affiliates or their Personnel, in which event Contractor shall be responsible for such portions of the Work, such portions of the Work shall be deemed to have been performed by Contractor for all purposes under this Agreement, and
Owner will look solely to Contractor in connection with such portions of the Work.

20.2.2Assignment/Delegation by Owner.

20.2.2.1Affiliates. Owner reserves the right, in its sole discretion and without the prior consent of
Contractor, to assign all or any of its rights and/or to delegate all or any of its obligations under this Agreement to one or more of its Affiliates. Owner shall give Contractor Notice of such assignment and/or delegation. Upon its receipt of
Notice of a delegation or assignment of Owners obligations under this Agreement, Contractor shall be deemed to have released Owner from all of the obligations so delegated or assigned so long as the assignee/delegate of such obligations
assumes the obligations so assigned or delegated and each Owner either reissues or affirms the continued effectiveness of its Owner Guaranty. If Owner or Contractor so requests, then Contractor or Owner (as the case may be) shall, without delay or
conditions, execute a written release that confirms Owners release from such obligations or such assignees/ delegates assumption of such rights or obligations (as the case may be).



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20.2.2.2Third Parties. Owner may assign any or all of its rights and/or
delegate any or all of its obligations under this Agreement to any Person other than an Affiliate; provided, however, that Owner will not be relieved of its obligations hereunder so assigned or delegated, unless Contractor consents to
such assignment or delegation; provided, further, such consent will not be unreasonably withheld, unreasonably conditioned or unreasonably delayed. If, upon its request for such consent, Contractor has concerns that may lead to its
withholding such consent, then Contractor shall promptly identify such concerns to Owner, meet and in good faith discuss with Owner appropriate steps that may be taken to address and resolve such concerns so as to allow for such consent to be
granted. If Contractor consents to such assignment, Contractor shall be deemed to have released Owner from all of the obligations so delegated or assigned so long as the assignee/delegate of such obligations assumes the obligation so assigned or
delegated; provided, however, that each Owner either reissues or affirms the continued effectiveness of its Owner Guaranty. If Contractor has consented to the delegation of Owners obligations as provided above, then, if Owner so
requests, Contractor shall execute documentation evidencing such consent and releasing Owner from such delegated obligations. Contractor shall be entitled to reject any such assignment and/or delegation where such assignment and /or delegation would
be to one of Contractors competitors in the engineering and construction business.

20.2.3Successors and Assigns.
Subject to Sections 20.2.1 and 20.2.2, the provisions of this Agreement shall extend to the benefit of and will be binding upon the successors and assigns of the Parties.

20.3 Reviews, Inspections, Approvals by Owner. The inspection, review, and/or comment by Owner, Owner Site Manager, the Owner Engineer, any
Financing Party or the Financing Engineer of any drawing, document, or any other Work or services performed by Contractor, any Subcontractor or Owner Supplier will not (a) alter, amend, waive or relieve any obligation of Contractor under this
Agreement, other than the obligation to have allowed such inspection, review and/or comment, (b) impose any liability on Owner, Owner Site Manager, the Owner Engineer, any Financing Party or the Financing Engineer under this Agreement or
(c) result in any adjustment of the Fixed Component, Project Schedule, Performance Requirements or other obligations or liabilities of the Parties under this Agreement. Notwithstanding the foregoing, Contractor will be entitled to rely upon any
fully-executed Change Order or fully-executed amendment to this Agreement.

20.4 Governing Law; Choice of Forum. This Agreement will
in all respects be governed by and construed in accordance with the laws of the State of New York, without giving effect to any choice of law rules thereof, which may direct the application of the



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laws of another jurisdiction. For purposes of resolving any Dispute arising under this Agreement, and subject to Article 17, the Parties hereby
submit to the non-exclusive jurisdiction of the courts of the State of New York and the federal district courts, in each case located in New York.

20.5 Surviving Obligations. The provisions of this Article 20, the indemnification provisions set forth in this Agreement, and other provisions of this Agreement that are by their nature intended to survive termination,
cancellation, completion, or expiration of this Agreement, and any expressed limitations or releases from liability, will continue as valid and enforceable obligations of the Parties, notwithstanding any such termination, cancellation, completion,
or expiration. Further, termination of this Agreement will not relieve either Party of any obligation hereunder which expressly or by implication survives termination hereof and, except as expressly provided in Article 13 or this
Article 20, will not relieve either Party of any obligations or liabilities for loss or damage to the other Party arising out of or caused by acts or omissions of such Party prior to the effectiveness of such termination or arising out
of such termination.

20.6 Severability. If any provision of this Agreement is held void, voidable, invalid or inoperative, no other
provision of this Agreement will be affected as a result thereof, and, accordingly, the remaining provisions of this Agreement will remain in full force and effect as though such void, voidable, invalid or inoperative provision had not been
contained herein. To the extent that any provision is held void, voidable, invalid or inoperative, the Parties shall negotiate an equitable adjustment in the provisions of this Agreement with a view toward effecting the purpose of this Agreement,
and the validity and enforceability of the remaining provisions, or portions or applications thereof, will not be affected thereby.

20.7 Notices. All Notices permitted or required to be given under this Agreement will be in writing and will be deemed duly given when received: (a) when sent by telefacsimile transmission; provided, however, that
the sender has received electronic or voice confirmation of the recipients receipt of such transmission; (b) when confirmation of receipt by the recipient is confirmed by the delivery service, if sent by overnight (or next Business Day)
or international courier service; or (c) when received by the recipient, if delivered by personal delivery or mail. All Notices must be in English. Notices will not be effective if given by electronic mail. All Notices shall be delivered or
sent to the Parties at their respective address(es) or number(s) shown below or to such other address(es) or number(s) as a Party may designate by prior Notice given in accordance with this provision to the other Party:



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|                    |  |                    
|------------------- |  | -------------------
|If to Owner:        |  | and,               
|                    | 
|Richard Schlager    |  | Tony Smith         
|8100 SouthPark Way  |  | 8100 SouthPark Way 
|Littleton, CO 80120 |  | Littleton, CO 80120
|Ph: 303-339-8855    |  | Ph: 303-962-1939   
|Fax: 303-734-0330   |  | Fax: 303-734-0330  

and copy to:

Jonathan Lagarenne

997 Lenox Drive, Building 3

Lawrenceville, NJ 08648-2311

Ph:
609-896-4588

Fax: 609-896-1469



|                              |  |                              
|----------------------------- |  | -----------------------------
|If to Contractor:             |  | and,                         
|                              | 
|Ray Kosak                     |  | Bob Walsh                    
|2000 International Park Drive |  | 2000 International Park Drive
|Birmingham, AL 35243          |  | Birmingham, AL 35243         
|Ph: 205-972-6671              |  | Ph: 205-972-6675             
|Fax: 205-972-6072             |  | Fax: 205-972-6078            

and copy to:

Nick Bouler

2000 International Park Drive

Birmingham, AL 35243

Ph: 205-972-6602

Fax: 205-972-6698

20.8
Article and Section Headings. The Article and Section headings herein have been inserted for convenience of reference only and will not in any manner affect the construction, meaning or effect of anything herein contained nor govern
the rights and liabilities of the Parties. References to Articles and Sections in this Agreement shall mean the Articles and Sections of this Agreement unless otherwise expressly noted.

20.9 Duties and Remedies. Except as provided in Article 8, Article 9, Article 18 and any other provision of
this Agreement pursuant to which an exclusive remedy is expressly provided, the duties and obligations imposed by this Agreement and the rights and remedies available hereunder will be in addition to and not in limitation of any duties, obligations,
rights and remedies otherwise imposed or available at law or in equity to the Parties.



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20.10 No Waiver of Rights. Except as may be specifically agreed in writing, the failure of Owner
or Contractor to insist in any one or more instances upon the strict performance of any one or more of the provisions of this Agreement or to exercise any right herein contained or provided by law or equity, will not be construed as, or constitute
in any way, a waiver, modification or relinquishment of the performance of such provision or right(s), or of the right to subsequently demand such strict performance or exercise such right(s), and all such rights will continue unchanged and remain
in full force and effect. No payment to Contractor by Owner will constitute an acceptance of any Work furnished by Contractor or shall relieve Contractor of any of its obligations or liabilities with respect thereto.

20.11 Entire Agreement. This Agreement, the Letter Agreement and the Site Work Agreement contain the entire agreement between the Parties with
respect to the subject matter hereof, and supersedes any and all prior and contemporaneous written and oral agreements, proposals, negotiations, warranties, guarantees, understandings and representations pertaining to the subject matter hereof.

20.12 Amendments. Except as provided in Section 10.2, no amendments or modifications of this Agreement will be valid
unless evidenced in writing and signed by both Parties.

20.13 No Third Party Rights. Except as expressly provided herein, this
Agreement and all rights hereunder are intended for the sole benefit of the Parties and, to the extent expressly provided, for the benefit of the Parties, Owner and the Indemnitees, and will not imply or create any rights on the part of, or
obligations to, any other Person.

20.14 Obligations Non-recourse. Each Party acknowledges that it will not have any recourse
against any Affiliates, members, partners, joint venturers, officers, directors, members, managers or employees of the other Party, Owner, or the Engineers, except that the foregoing shall not prejudice Contractors rights pursuant to any Owner
Guaranty or any Contractor Guaranty.

20.15 Relationship of the Parties. Except with respect to the administration of Owner
Contracts pursuant to Appendix M as indicated in Section 2.2.20, as set forth in this Section 20.15 and as otherwise agreed to in writing by the Parties, Contractor will be an independent contractor with respect
to the Project, each part thereof, and the Work, and neither Contractor nor its Subcontractors nor the Personnel of either will be deemed to be agents, representatives, employees or servants of Owner in the performance of the Work, or any part
thereof, or in any manner dealt with in this Agreement, unless otherwise agreed to in writing by the Parties. Owner shall neither have the right to control, nor have any actual, potential or other control over, the methods and means by which



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Contractor or any of its Personnel or Subcontractors conducts their respective independent business operations. Except with respect to the administration of
Owner Contracts in accordance with Appendix M, Contractor shall not perform any act or make any representation to any Person to the effect that Contractor, or any of its Personnel or Subcontractors, is the agent, representative, employee
or servant of Owner. Notwithstanding the foregoing, for Work conducted in Louisiana and for purposes of Louisiana Revised Statute § 23:1061 (2008), Owner and Contractor agree to recognize Owner as statutory employer of
Contractors employees while Contractors employees are providing Work to Owner under this Agreement.

20.16 Counterparts.
This Agreement may be executed in two or more counterparts, each of which will be deemed an original, but all of which together will constitute one and the same instrument.

20.17 Cooperation with Financing Efforts. Contractor shall use reasonable efforts to cooperate with Owner in connection with their respective
efforts to obtain and maintain Financing; provided, however, Owner agrees to act as a single point of contact between the Financing Parties and Contractor to the maximum extent possible. Without limiting the generality of the
foregoing, Contractor:



| | (a) | shall execute such documents as reasonably requested in connection with obtaining and maintaining Financing whereby Contractor (i) certifies to the Financing Parties that this
Agreement is in full force and effect and has not been modified and that there are no defaults under this Agreement (except, in each case, as specifically stated in such certification), (ii) represents and warrants to the Financing Parties that
this Agreement is enforceable against Contractor, (iii) consents to the collateral assignment of this Agreement to the Financing Parties as security for the debt relating to the Financing, (iv) agrees to give the Financing Parties Notice
of a Owner Event of Default contemporaneously with the Notices provided to Owner and an opportunity to cure such defaults, (v) clarifies provisions of this Agreement as reasonably requested by the Financing Parties, and (vi) agrees to
cooperate with Owner in the negotiation of such amendments to this Agreement as the Financing Parties may reasonably request;
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (b) | at Owners reasonable request, shall attend and participate in presentations to potential Financing Parties;
| | --- | ------------------------------------------------------------------------------------------------------------



| | (c) | hereby authorizes Owner to (i) provide this Agreement to potential Financing Parties and equity participants (subject to Article 18), and (ii) include a
description of the material provisions of this Agreement in any offering circular required for the Financing and/or, if the Financing must be registered in accordance with Applicable Legal Requirements, that Owner may, after consultation with
Contractor, file this Agreement as an exhibit to such registration statement (which filing will include requests for confidentiality with respect to pricing and other key commercial terms);
| | --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| | (d) | at Owners request, shall reasonably cooperate with the Financing Engineer and any rating agencies or other credit enhancement entities associated with a Financing;
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (e) | at Owners request, shall reasonably cooperate in connection with tax-exempt Financing or any Financing or other arrangements effected to reduce Taxes on the Project or the
Work; and
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (f) | Contractor shall provide Owner with legal opinions of in-house counsel to Contractor regarding the execution, delivery and validity of this Agreement and the status of Contractor as
Owner will reasonably request in connection with obtaining and maintaining the Financing.
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

20.18 Financing Engineer.
Contractor acknowledges that the Financing Engineer will be engaged for the purpose of providing to the Financing Parties a neutral, third party overview of the Work. The Financing Engineer will be a recognized engineering and consulting firm
selected by the Financing Parties and bound by confidentiality obligations substantially similar to those contained in Article 18. The Financing Engineer is expected to provide the Financing Parties with independent opinions with respect
to: (a) the status of the Work, (b) the performance of the Work and associated Equipment, (c) Contractors Performance Test procedures, (d) Contractors quality assurance program for the Work and major components
thereof, (e) the results of the Performance Tests, and (f) Applications for Payment and Change Orders submitted by Contractor. The Financing Engineer may attend all monthly meetings. Notwithstanding anything else to the contrary contained
herein, the Financing Engineer will have no right to direct Contractor or any portion of the Work or to make any Changes to the Work.

20.19 Owner Engineer. Owner Engineer shall act on Owners behalf, in relation to various Project-related matters, including the review of contract documents, attending design and progress meeting, carrying out inspections and
the review and approval of test results and most particularly all Performance Test results.

20.20 Review Committee. The Parties
recognize that the most efficient and cost effective implementation of the Work will necessitate continual monitoring of the Labor Plan and other strategic decisions that may have a material effect on the Total Work Cost or Project Schedule that the
Parties agree to have considered by the Review Committee. Because the nature of labor compensation decisions is expected to require the balancing of interests and tradeoffs among project objectives, each Party will select 2 representatives to
comprise a committee (the Review Committee) to consider adjustments to the Labor Plan and other Project execution strategies. The initial members of this Review Committee are to be appointed within 30 days of the Effective Date.



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Each Party may change its representatives on Notice to the other Party. Each Party shall ensure that its members on the Review Committee act reasonably at
all times. The Review Committee will meet on an as-needed basis, but no less frequently than quarterly. With respect to each issue considered by the Review Committee, Contractor and Owner, as appropriate, shall provide adequate materials and
information sufficient to allow a reasonable basis on which decisions can be made. The Review Committee will meet promptly and work cooperatively to adopt recommendations that support completion of the Work at the lowest Total Work Cost, except as
they otherwise unanimously agree. The Review Committee shall appoint one of its members to provide adequate notice of meetings to the other members and to keep and distribute accurate minutes of its meetings. The Owner Site Manager and the Project
Superintendent may be invited to attend meetings of the Review Committee but will not have any voting rights. At such time as Contractor believes that the level of compensation being paid to Craft Labor with respect to a particular Craft Labor Cost
Component is or will, in the foreseeable future, not be sufficient to maintain existing Craft Labor or attract additional needed Craft Labor, in each case in a specific Craft Labor Category, for the construction of the Project to support the Project
Schedule, Contractor will give Notice to Owner and the Parties, acting through their representatives on the Review Committee, shall take the following actions:



| | (a) | Contractor will provide a reasonably detailed labor analysis, supported by a reasonable level of factual compensation information, with respect to the specific Craft Labor
Category(ies) as to which Contractor believes compensation adjustments are necessary. Such analysis shall include (i) Contractors recommended changes to the level of Craft Labor Cost Component to be offered to such Craft Labor;
(ii) a direct comparison with the then existing level of Craft Labor Cost Component being paid to the same Craft Labor Category(ies) at the Key Benchmark Projects and the Other Benchmark Projects, to the extent such information is available;
(iii) a forecast as the projected impact on the Total Work Cost of the Project that would result from Contractors recommended changes and (iv) an analysis of any reasonably cost effective alternative to achieve the same goal;
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (b) | the members of the Review Committee shall consult with each other in good faith and attempt to reach a unanimous decision as to the increased level of Craft Labor Cost Component (or
alternative) to be offered to Craft Labor within such Craft Labor Category(ies) and as to when any changes should be implemented;
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (c) | if the members of the Review Committee are not able to reach a unanimous decision, then Contractor may implement its recommended changes; provided that the
level of the Craft Labor Cost Component to be offered to Craft Labor within the Craft Labor Category in question is no higher than * percent (*%) in excess of (i) the highest level of Craft Labor Cost
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



---

| | Component then being paid to Craft Labor within such Craft Labor Category working on Key Benchmark Projects; or (ii) the average level of Craft Labor
Cost Component then being paid to craft labor within such Craft Labor Category working on Other Benchmark Projects, whichever is the greater between (i) and (ii).
| | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (d) | If such recommended changes would cause the level of the Craft Labor Cost Component for a specific Craft Labor Category to be higher than permitted in clause (c) above, then,
either the Review Committee must unanimously agree to make such change or either Party may refer the matter for decision by the senior officers of the Parties. Each Party shall, through its nominated senior officer, prepare a written statement of
its position and deliver it to the other Party within 10 days after referral of the matter to the senior officers. The nominated senior officers from each Party shall meet in person within 15 days after the exchange of such written statements in an
effort to resolve the matter.
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



---

IN WITNESS WHEREOF, the Parties, intending to be legally bound hereby, have caused this Agreement to be
executed by their duly authorized officers as of the date first written above.



|                               |  |                                       |  |        |  |                     
|------------------------------ |  | ------------------------------------- |  | ------ |  | --------------------
|BE&K CONSTRUCTION COMPANY, LLC |  | RED RIVER ENVIRONMENTAL PRODUCTS, LLC
|                               |  |                                       | 
|By:                            |  | /s/ T. W. Vaughn                      |  | By:    |  | /s/ Richard Schlager
|Name:                          |  | T. W. Vaughn                          |  | Name:  |  | Richard Schlager    
|Title:                         |  | President                             |  | Title: |  | Manager             
|                               |  |                                       | 
|                               |  |                                       |  |        |  | /s/ C. Jean Bustard 
|                               |  |                                       |  | Name:  |  | Jean Bustard        
|                               |  |                                       |  | Title: |  | Member              



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APPENDIX A

Scope of Work

ARTICLE 1 PROJECT OBJECTIVE, DESCRIPTION, AND STATUS



|1.1 | OVERALL OBJECTIVE
|--- | -----------------

The Owner intends to develop a
new Greenfield facility to provide activated carbon (AC) to its clients and to deliver electrical energy to the local utility. This Scope of Work outlines the Contractors role in the design, procurement, erection, training,
startup/testing, commissioning and turnover of the Project to Owner (the Work).



|1.2 | Project Description and Overall Functional and Operational Requirements
|--- | -----------------------------------------------------------------------

Red River Environmental Products, LLC (RREP) is a Greenfield facility to be located in Red River Parish, Louisiana. The Project will manufacture powdered activated carbon (PAC) and, depending
on market conditions, impregnated PAC (IAC) (the Project). The Project, designed to utilize the waste heat from the process to generate electricity for onsite use and for sale, is to be located near the Red River Mine (mine mouth) and
use lignite coal as the feedstock. The design for the Project that is the subject of this Appendix A provides for a single production line of four multi-hearth furnaces (MHFs). Certain provisions for a future second production line are
included in the design for the Project. The first production line will have a nominal production capacity of 125 million pounds per year PAC (2.6 million pounds per week) and will require approximately * tons per year of lignite coal. This
nominal production capacity corresponds to * tons per day per MHF. The first production line will be designed for a production capacity of * million pounds per year PAC which corresponds to * tons per day per MHF.

The high-level overall functional and operational requirements for the Project are as follows:



| | i. | Safely and reliably produce a nominal rate of 125 million pounds/year of AC from lignite coal in a new Greenfield facility constructed in Red River Parish, Louisiana.
| | -- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | ii. | Design operating flexibility into the process that enables production levels to be maintained or improved with target feedstock variability.
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------



| | iii. | Produce AC of a specified quantity, with a quality that reliably meets or exceeds ADA-ES PAC and IAC product specifications. Contractor is not directly responsible
for meeting these MHF performance criteria, which are the
| | ---- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



---

| | responsibility of the MHF supplier. However, Contractor will be responsible for the proper design and performance of all coal handling, product handling, and
refuse handling Equipment that support the MHFs and whose proper operation is a pre-requisite to the proper operation of the MHFs.
| | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | iv. | Reliably capture waste heat and export excess electrical energy from the AC production process for sale.
| | --- | --------------------------------------------------------------------------------------------------------



| | v. | Provide for reliable loadout of the PAC and IAC to truck.
| | -- | ---------------------------------------------------------



| | vi. | Minimize so as to achieve and comply with liquid, gaseous, and solid waste regulatory requirements and permit limits applicable to the project.
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------



| | vii. | The Project shall consist of all aspects necessary for operations, including but not limited to:
| | ---- | ------------------------------------------------------------------------------------------------



| | Ø | four (4) MHFs and support Equipment
| | - | -----------------------------------



| | Ø | utility supply (gas, power, and water), consisting of electrical interconnects to the utility up to the Projects dead-end structure, and gas interconnects starting at the gas
suppliers meter set isolation flange, and water interconnect at water suppliers isolation connection
| | - | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | Ø | lignite coal receiving, handling, sizing, and storage
| | - | -----------------------------------------------------



| | Ø | power generation, including waste heat recovery boiler and steam turbine generator
| | - | ----------------------------------------------------------------------------------



| | Ø | product handling, sizing and storage
| | - | ------------------------------------



| | Ø | product load out facilities
| | - | ---------------------------



| | Ø | emission control systems
| | - | ------------------------



| | Ø | water and wastewater treating systems
| | - | -------------------------------------



| | Ø | lime handling and receiving systems
| | - | -----------------------------------



| | Ø | solid waste systems
| | - | -------------------



| | Ø | sanitary waste systems
| | - | ----------------------



| | Ø | administrative and analytical support areas
| | - | -------------------------------------------

THE DETAILED
FUNCTIONAL AND OPERATIONAL REQUIREMENTS AND DESIGN CRITERIA FOR THE PROJECT ARE SPECIFIED IN THE FUNCTIONAL AND OPERATIONAL REQUIREMENTS/DESIGN CRITERIA (F&OR/DC), RED RIVER ENVIRONMENTAL PRODUCTS, LLC, ACTIVATED CARBON PRODUCTION
FACILITY, RED RIVER PARISH LOUISIANA, DOC. NO. CF-2007-016, REV. 1, FEBRUARY 2008 AND AS FURTHER REFINED AND ANTICIPATED IN THE SEPTEMBER 2, 2008 DRAFT OF REVISION 2 TO THE DOCUMENT CURRENTLY BEING NEGOTIATED BY THE PARTIES. REVISION 2 TO
BE COMPLETED AND AGREED BY SEPTEMBER 12, 2008. REVISIONS TO THIS DOCUMENT CAN BE MADE BY MUTUAL CONSENT OF OWNER AND CONTRACTOR.



---

|1.3 | Owner-Provided Equipment and Services
|--- | -------------------------------------

Owner will provide the following:



| | viii. | Multi Hearth Furnaces
| | ----- | ---------------------



| | ix. | Project Site development activities including:
| | --- | ----------------------------------------------



| | Ø | Collect information concerning site water resources, including existing wells, surface waters, and municipal/industrial water sources
| | - | -------------------------------------------------------------------------------------------------------------------------------------



| | Ø | Identify applicable zoning and permitting requirements for the site
| | - | -------------------------------------------------------------------



| | Ø | Review gas and electric transportation capacity in the area of the site and prepare interconnect applications
| | - | -------------------------------------------------------------------------------------------------------------



| | Ø | Obtain Owner Permits as described in Appendix D
| | - | -----------------------------------------------



| |  |  | Operations and maintenance Personnel. Specific Personnel requirements and qualifications will be mutually developed and agreed during the Work.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------



|1.4 | Project Status
|--- | --------------

Contractor began work on the
Crowfoot Project under an LNTP November 13, 2007 which included preparing the Phase 1 Project Execution Plan and confirming cost estimates for developing the Phase 1 detailed engineering based on the engineering previously conducted by Harris
Group Inc. Contractor and RREP executed the Preliminary EPC Agreement on January 29, 2008. Under the Preliminary EPC Agreement, Contractor was tasked with developing the detailed engineering deliverables and Equipment procurement packages in
sufficient detail to support a bottom up cost estimate (Front End Loading, Level 3) and construction schedule to be used as the basis for the Construction Price. As part of this effort, Contractor also identified major Equipment procurement
activities that are critical to the Project Schedule. Contractor prepared construction drawings and specifications for a limited amount of construction work (i.e., site grading, erosion control, MHF foundations) which is required early to ready the
site for MHF installation and support the Project Schedule.

On August 18, 2008, Contractor issued the purchase order for the waste
heat recovery boiler and afterburner (WHRB/AB). Early procurement of the WHRB/AB is required to maintain Project Schedule based on the fabrication time of the WHRB.

1.4.1 Site Survey and Geotechnical InvestigationSite surveying has been completed and results provided to Contractor. Initial
geotechnical investigation were completed at the Project Site by Owner and final reports were issued in October 2007 to Contractor. Additional geotechnical investigations were conducted by Contractor under the Preliminary EPC
Agreement.



---

1.4.2Environmental Permitting Status

Environmental permitting activities have been initiated for the site. The following is a summary of the current status of the key permitting activities:



| | x. | LDEQ issued RREP the Authorization to Construct and the Title V Air Permit on May 28, 2008.
| | -- | -------------------------------------------------------------------------------------------



| | xi. | USACE provided authorization to Owner that the site work (including construction of the access roads into the site across the northern drainage canal) are authorized by Nationwide
Permit No. 39. An amended application will be required if construction plans deviate from those prepared by Contractor and provided to the USACE in support of this authorization.
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | xii. | Environment assessments have been conducted for the property. A Phase 1 Environmental Site Assessment (ESA) was performed to provide an overall assessment of
environmental factors affecting the Project Site, and to provide appropriate inquiry into the previous ownership and uses of the property in order to identify recognized environmental conditions (REC) with regard to the
presence of hazardous substances and petroleum products. This assessment has revealed no evidence of REC in connection with the property. An Environmental Constraints Analysis (ECA), consisting of a background review for archaeological
resources, potential jurisdictional waters, and threatened and endangered (T&E) species was also completed. As part of the ECA, a pedestrian survey was also conducted to determine if potential jurisdictional waters of the United
States and/or T&E species habitat exist within the survey area. The ECA concluded that further cultural resource investigations were not necessary; that the approximate percentage of jurisdictional waters/wetlands within the survey area were
less than 1 percent (<1.0 acres); and that no T&E species habitat were observed within the survey area.
| | ---- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

1.4.3Project Site Description and Site Infrastructure Status

The Project Site consists of approximately 60 acres located on the
south side of Parish Road 604 in Armistead, Red River Parish, Louisiana. There are no paved roads or buildings on the property. The Project Site is accessed from Parish Road 604 to the north. RREP owns the Project Site.

1.4.3.1Site Infrastructure and Linears (the Utility Facilities)

Road AccessParish Road 604 provides access to the site. Additionally, an unpaved haul road previously used by the Red River Mine runs the
length of the site on the western boundary. Red River Mine has agreed to allow temporary construction access via a road to be constructed by Contractor on the Northwest corner of the Project Site.



---

Temporary FacilitiesThe site is a Greenfield site. As such, there are no existing utilities
or infrastructure on the property.

Lignite FeedstockCoal will be delivered to the crushing and handling area by
over-the-road belly dump trucks.

Railroad SpurOwner is in discussions with the Union Pacific Railroad (UP) regarding the
location of the interconnection of a dedicated rail spur to UPs line. Design and construction (other than general site layout provisions) of the rail spur and connection to the main line have been deferred for the first production line and are
not within the scope of this agreement.

Process WaterProcess water
for the Project will come either from a mine-owned dewatering pond (E6) or future from the South Oxbow of the Red River. Potable WaterPotable water shall be provided from a 3/4inch line and meter installed by the water company to the project property located in Sections 21 & 28, T12N, R10W, Red River Parish, Louisiana. The line will be extended from an
existing line adjacent to Parish Road 604 by the water company. The water company will bore and extend the line under Parish Road 604 to the meter location. At that point they will set the meter just inside the property line which is within the
Project Site boundary as defined in Appendix J. The Contractor shall tie-in to the water meter and pipe potable water to the Project use points.

Industrial Water DischargeNo industrial discharge (LPDES regulated) outfall or tie-in will be provided. The Contractor shall design and construct the Project for zero discharge.

Sanitary SewerThere are no off-site connections for the sanitary sewer. Sanitary sewer shall be provided by on-site septic system designed
and installed by Contractor.

Natural GasNatural gas will be provided by Crosstex LIG, LLC (CLIG). CLIG will
install a 4 tap on CLIGs existing pipeline, a new Measurement / Regulation station (M/R Station), a liquid removal facility, and a 4 pipeline (collectively, the Facilities) to be located in Sections
21 & 28, T12N, R10W, Red River Parish, Louisiana. The 4 pipeline will extend from CLIGs existing Armistead Compressor Station site to a new M/R Station located on the Project Site. The Facilities will be designed and constructed
by CLIG to accommodate RREPs potential Project natural gas requirement of a 120,000 SCF/HR flow rate. The 4 pipeline and M/R Station design pressure shall be 720 PSIG maximum allowable operating pressure with regulated pressure to
RREPs Project of 100 PSIG or less (relief devices will be provided to ensure Project natural gas line pressure will be less than 100 PSIG). CLIG will extend the new gas line to the M/R Station location as specified by Contractor.
Contractor is responsible for odorization of the gas delivered by Crosstex.-

Electrical InterconnectContractors
interconnection scope will end at the Projects 34.5kV switchyard dead-end structure (provided by Contractor) on-site. It is currently expected that the local wholesaler, Central Louisiana Electric Company, will extend a 34.5kV line from their
existing 138kV transmission facilities approximately 3.8 miles northwest of the Project Site through a step-down transformer and to the Projects dead-end.



---

Ash DisposalOwner is exploring two options for the disposal of the ash created by the
production process. One option is to acquire ownership of an open pit from the mining company and convert it to a landfill for the ash disposal. The second option is to transport the ash off site to an existing permitted landfill. Contractors
scope is through point of loadout into trucks.

Temporary Construction PowerTemporary construction power will be provided by
Valley Electric. Valley Electric will provide power to a transformer provided by Valley Electric and located on the Project Site by the Contractor.

ARTICLE 2 Description of CONTRACTORS SCOPE OF WORK



|2.1 | Overall Approach
|--- | ----------------

The Project is being completed
using a two-phased contracting approach. The Preliminary EPC Agreement (previously referred to as Phase 1) consisted of an open book phase culminating with the development of a Construction Price for the balance of engineering, construction and
commissioning. The Preliminary EPC Agreement engineering scope has been substantially completed.

The Work will include engineering,
procurement, construction, training, startup, testing, commissioning, and turnover of the Project to Owner pursuant to the Agreement. The function, intent, and quality required of the Project are defined in the F&OR/DC, Red River Environmental
Products, LLC, activated carbon production facility, Red River Parish Louisiana, Doc. No. CF-2007-016, Rev. 2, August 2008 and by the following engineering documents prepared by Contractor under the Preliminary EPC Agreement. In the event of
any conflict between provisions within the F&OR/DC and the engineering deliverables listed in Attachment 1 to this appendix, the F&OR/DC shall take precedence for design, construction and interpretation.



|2.2 | Phase 2 Deliverables
|--- | --------------------

The deliverables include all
of the scope of work required to procure, design, erect, startup, and commission a fully functioning, reliable Project (excluding the MHFs), consistent with Professional Standards and Prudent Industry Practices that complies with the requirements
detailed in the F&OR/DC, Red River Environmental Products, LLC, activated carbon production facility, Red River Parish Louisiana, Doc. No. CF-2007-016, Rev. 2, August 2008 and the engineering deliverables prepared by Contractor under the
Preliminary EPC Agreement.



---

2.2.1Updated Project Safety Manual

The Project Safety Manual developed during Phase 1 shall be updated for the Work (if required). This Project Safety Manual shall be
accepted by the Owner prior to issuance of the Full Notice to Proceed under the Agreement.

2.2.2Startup, Commissioning, and
Performance Testing Plans, Procedures, and Results

The startup, commissioning, and performance testing process is
intended to verify that the installed systems operate in a manner consistent with the design intent. To this end, the Contractor will in conjunction with Owners environmental consultant; create and document the startup, commissioning, and
Performance Testing plans, procedures, and forms, and obtain Owner approval for same; coordinate functional performance testing of installed systems; and complete all system performance and reliability testing as required by this Agreement to
demonstrate that the systems and overall Project perform in accordance with Appendix C.

The Project will be performance tested in three
stages, each in accordance with the terms and conditions of the Agreement and Appendix C:



| |  |  | Upon completion of at least one (1) MHF (Unit), such Unit(s), and all associated equipment necessary to independently operate such Unit(s),
excluding the power generation, will be performance tested for * hours to demonstrate initial operation,
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Upon completion of all four (4) Units, the full Project, to include the power island, the emission control system and all material handling systems, will be
performance tested for * hours to demonstrate full Project performance criteria and guarantees, and,
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Upon completion of, or concurrent with such performance test, and prior to Final Completion, the Reliability Test will be performed for * days to demonstrate
reliability of the full Project,
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Deliverables to be provided during the startup, commissioning, and
performance testing process include, but are not limited to:



| | xiii. | Provide complete procedures and/or protocols for startup, commissioning and performance testing, and related documentation forms for approval by the Owner at least three
(3) months prior to the scheduled date for each of Phase 1 Mechanical Completion and Mechanical Completion. Test procedures shall at a minimum include statements indicating test objectives, applicable standards, test descriptions, forms, and
checklists to be used to control and document the required tests.
| | ----- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



---

| | xiv. | Arrange for and provide assistance from Equipment Suppliers to properly and safely check out, start up, and test the Equipment and Project.
| | ---- | -------------------------------------------------------------------------------------------------------------------------------------------



| | xv. | Provide final record drawings reports and documentation, including electrical test reports, coordination studies, circuit breaker final settings, testing and balancing
reports, system/Equipment start-up reports, control system point-to-point check out documentation, pressure testing, mechanical system cleaning/flushing reports, verification of conformance to manufacturers specifications, final Performance
Testing reports/data, and all other documentation reasonably necessary to demonstrate and certify satisfaction of the Performance Requirements included in Appendix C.
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | xvi. | Commissioning documentation shall include, but not be limited to:
| | ---- | -----------------------------------------------------------------



| | Ø | Operational description of each system to be tested. This description shall encompass the design intent and define the commissioning scope of each system.
| | - | ----------------------------------------------------------------------------------------------------------------------------------------------------------



| | Ø | Equipment tracking forms for each component of the systems being tested. These forms shall track installation and startup of each component.
| | - | --------------------------------------------------------------------------------------------------------------------------------------------



| | Ø | Startup and test reports and associated forms of all components requiring startup or testing including alignment, calibration checks, and any other pre-operational testing required
prior to Project commissioning and performance testing.
| | - | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | Ø | Records maintained by Contractor when dictated by Applicable Legal Requirements or, that provide traceability of analytical results and instrument calibrations to the National
Institute of Standards and Technology (NIST). Provide these records with all test reports.
| | - | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | Ø | Point-to-point and loop check verification forms for each input and output to the plant control system. These forms shall track installation, labeling, and testing with properly
calibrated and certified test equipment.
| | - | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | Ø | Control loop tuning verification and documentation of tuning constants via the DCS control system to the degree applicable, or at local controllers if not at the DCS.
| | - | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | Ø | Functional performance test reports that verify every specified operational mode and function of each component and system.
| | - | ---------------------------------------------------------------------------------------------------------------------------



| | Ø | Project performance test reports that certify operational compliance of the Project with Contractors performance guarantees. Reports shall include but not be limited to test
data and results, quality assurance/quality control verifications, calculations, performance curves, laboratory and Personnel qualifications, and other information as required to fully demonstrate compliance with Performance Testing.
| | - | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



---

2.2.3Operator Training

The Contractor shall provide training to Owner Personnel for operation and maintenance of the completed Project. Training shall be
comprehensive and include all aspects of Project operations. During the Work, a general training plan will be prepared by Contractor and approved by Owner.

2.2.4Record Drawings



| | xvii. | Starting six (6) months prior to the scheduled date for Mechanical Completion and continuing to Final Completion, the Contractor shall provide monthly updates and allow Owner
access for review of documentation of the following redlined documents. Prior to Final Completion, the Contractor shall provide Owner the following documents as final Record Drawings.
| | ----- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | o | P&IDs
| | - | ------



| | o | General Arrangements
| | - | --------------------



| | o | Single Line Electrical Drawings
| | - | -------------------------------



| | o | Elementary Electrical Drawings
| | - | ------------------------------



| | o | Loop Sheets
| | - | -----------



| | o | Final Tuning Constants
| | - | ----------------------



| | o | Interconnection Electrical Drawings
| | - | -----------------------------------



| | o | Undergrounds
| | - | ------------



| | o | Equipment List
| | - | --------------



| | o | Instrument Index
| | - | ----------------



| | xviii. | Prior to achieving Final Completion, Contractor shall provide Owner a complete electronic set (PDF and native format
[i.e., AutoCAD, Microsoft Word, etc.]), one full size hard copy set, and one one-half (1/2) size hard copy set of all Project
drawings, together with all manuals (minimum of four copies), and the above listed documents in their as-built condition. When reasonably approved by Owner and in lieu of new manuals, errata and/or replacement pages may be provided to Owner to
replace specific pages in manuals previously submitted to and approved by Owner.
| | ------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|2.3 | OTHER Requirements
|--- | ------------------

The following sections outline
other requirements included in the Contractors scope of Work



| | xix. | Risk Management Plan
| | ---- | --------------------



| | xx. | Design Requirements/Acceptance Criteria.
| | --- | ----------------------------------------



| | xxi. | Schedule Requirements/Acceptance Criteria.
| | ---- | ------------------------------------------



---

| | xxii. | Quality Assurance Requirements/Acceptance Criteria.
| | ----- | ---------------------------------------------------



| | xxiii. | Project Communications.
| | ------ | -----------------------

2.3.1 Risk Management
Plan. Adhere to Owner Risk Management Plan as mutually agreed, and specifically be responsible for the preparation and maintenance of a project risk register.

2.3.2Design Requirements and Acceptance Criteria

All deliverables will be provided to Owner electronically, as specified herein (Applicable Electronic Format) and in hardcopy. The electronic versions will be provided in a mutually-agreed format(s). Design activities
performed by Contractor must meet or exceed Professional Standards and Prudent Industry Practices, and are inclusive of the following:



| | xxiv. | Conduct design activities in accordance with an Owner-approved Quality Assurance Program and associated implementing procedures.
| | ----- | --------------------------------------------------------------------------------------------------------------------------------



| | xxv. | Define, verify, and control all design documents. Prepare design documents that clearly and fully define the construction activity. Control all design changes to a level
commensurate with the original design. Design outputs shall be verified against the design input requirements prior to release.
| | ---- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | xxvi. | Develop calculations to substantiate the validity of the design. Provide calculations in accordance with the Contractors Quality Assurance Program and implementing procedures.
Calculations shall fully support the design. The design shall not be accepted without complete, checked calculations.
| | ----- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | xxvii. | Prepare technical specifications to define the level of quality for the Equipment, Materials, and methods employed during construction.
| | ------ | ---------------------------------------------------------------------------------------------------------------------------------------



| | xxviii. | Prepare drawings and schedules in accordance with Contractors Owner-approved Quality Assurance Program and associated implementing procedures. Prepare finished AutoCAD and
applicable 3D drawings so that prints or reproducibles as well as reductions to half size will be clear and legible. Drawings shall ensure that all major Equipment, lines, valves, and controls are labeled/enumerated to facilitate operation. Careful
consideration shall be given to the accuracy, style, and position of all notations. Drawing standards (line weights, layers, fonts, colors etc.) shall be Contractors standard practice.
| | ------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | xxix. | Monitor the design activities to provide proper assurance that the required activity is performed in accordance with the Project Execution Plans, including all quality requirements.
| | ----- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | xxx. | Conduct design, model, operability, and constructability reviews, incorporate/respond to all Owner comments, and incorporate Owner scope/supplied information prior to release of
design. Ensure all design review comments are documented and tracked to closure prior to release of design for construction. Coordinate inspection and testing activities with the Owner and Owner Engineer to avoid duplication of effort.
| | ---- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



---

| | xxxi. | Provide Owner access to Contractors and its Subcontractors and Suppliers facilities and Personnel during design and construction for in-progress review and
assistance. Coordinate with Owner through on-site visits, quality assurance reviews, and meetings as necessary to facilitate design progress and ensure that the completed Project will meet all functional and operational requirements and design
criteria within Contractors scope.
| | ----- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

2.3.2.1 Engineering Submittal Requirements

(a) Equipment Specifications

To the maximum extent possible, Equipment data sheets will be utilized to specify off-the-shelf equipment such as tanks, pumps, agitators, instruments and vessels. However, when detailed Equipment specifications are required to fully define
the Equipment, Contractor will prepare required specifications.

The completed specification will be reviewed by a peer of the originator
and approved by the responsible Design Department Manager or Process Manager.

All Equipment specifications will be released for the
Owners review. The Owner or a designated third party will have ten (10) Business Days to reply with comments. If the Owner has not provided comments to the approval document within ten (10) Business Days, the document shall be deemed
approved as submitted. It is understood that the Owner and Contractor may, on occasion, mutually agree to develop and implement accelerated submittal approval procedures to facilitate Project Schedule execution. After the proper reviews and
approvals have been obtained, the specifications will be issued for bids with an electronic copy being sent to the project administrative assistant to file in ProjectWise.

During development of an Equipment specification, it may be desirable to make a preliminary release. When this is done, the specification will be clearly
identified as a preliminary issue, and the status of the document will be identified as Release for Information (RFI) or Released for Approval/Bid (RFA/RFB).

(b) Construction and Material Specifications

Each specification for construction and Materials will be reviewed per Project Execution Plan

Each specification for construction
and Materials will be issued to the Owner and/or Owners designated third party for review. The Owner will have ten (10) Business Days to make comments prior to the document being released for construction. If the Owner has not provided
comments to the approval document within ten (10) Business Days, the document shall be deemed approved as submitted.



---

(c) Drawings

For drawings that are issued in hard copy format:



| |  |  | Drawings and documents will be plotted and issued through Contractors Document Control Department.
| | - |  | ---------------------------------------------------------------------------------------------------

For drawings that are issued electronic format:



| |  |  | These drawings will be issued through the Contractors Document Control Department under transmittal. To the maximum extent possible, ProjectWise will be
utilized. PDF format will be used except as approved by the Engineering Project Manager and as required for final Record Drawing transmittal to Owner.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Engineering drawings will incorporate the standard approved title block, border, and drawing arrangement. Drawings will be signed off in accordance with the Project Execution Plan. A drawing list shall be maintained
for the project.

a) Handling of Contractor Drawings

The Discipline Design Lead will prepare an internal transmittal for their discipline drawings for release and will deliver the transmittal and original drawings to the Engineering Project Manager. The Discipline
Design Lead will see that the appropriate signatures are included and that the status of the drawing is correct on both the drawings and transmittal.

The Engineering Project Manager will review and sign the drawings for release, note internal, Owner, and other distribution, and forward to the Document Control Department for disposition.

A transmittal of all For Approval drawings will be issued to the Engineering Expediter for their use in expediting approvals.

Returned Drawings

All Contractor
drawings returned with comments will be received by the Engineering Project Manager who will make subsequent distribution.

The responsible
Discipline Design Lead will review Owner notes and comments and discuss any discrepancies with the Engineering Project Manager, Discipline Department Manager, or other Discipline Design Leads as



---

required. Provided the comments do not impact Project cost or Project Schedule, the Discipline Design Lead should revise the drawing(s) in accordance with
Contractor policy and reissue as outlined in the Project Procedure Manual. Contractor shall notify Owner for resolution of comments that will not be incorporated because of a potential cost or schedule impact.

b) Handling of Supplier Documents

Suppliers original proposals will be sent to Contractors Procurement Lead and the Engineering Project Manager. The Procurement Lead will make distribution in accordance with the Project Distribution Matrix.

Supplier Drawings Received For Approval

Suppliers shall submit drawings for approval under transmittal and preferably in electronic format. The drawings are to be submitted to the Engineering Project Manager with a copy to the Engineering Expediter. The
Engineering Project Manager will indicate the primary approver and distribution of the documents to be made by the Document Control Department.

The Engineering Project Manager will indicate who should be the primary approver and the time frame for other departments to return comments to the primary approver. The Project Expediter will track the progress of the approval drawings and
provide weekly status report to the Engineering Project Manager.

The primary approver will receive marked print(s), coordinate and
transfer all appropriate markings to the original approval drawing, and return the drawings to the Engineering Project Manager for disposition.

Drawings will be issued to the Owner at the same time internal distribution is made. The Owner will be responsible for returning the documents and any comments to Contractor primary approver within ten (10) Business Days to satisfy the
required return date set forth in the transmittal.

Certified Supplier Drawings

Suppliers shall submit certified drawings under transmittal and preferably in electronic format. The drawings are to be submitted to the Engineering
Project Manager with a copy to the Engineering Expediter. The Engineering Project Manager will indicate distribution of the documents to be made by the Document Distribution Department.

(d) Sketches



---

Where appropriate, design sketches will be used
to develop and distribute information in the prosecution of the Work. All design sketches will be prepared on Contractor standard 81/2 X 11 or 11 X 17 sketch forms. They will be numbered in the same manner as engineering drawings except that the sketch number will be preceded by the designation SK. All sketches are to reference
Contractor and if used in the construction of the Project must be sealed by a Professional Engineer registered in the State of Louisiana. Sketches that effect drawings required to be Record Drawings shall be incorporated into the appropriate Record
Drawing submittal.

(e) Revisions

All revisions of engineering documents will be clearly indicated on the documents.

Revisions prior to
Release for Construction (RFC) will be indicated by an alpha character revision indication.

Initial RFC releases will be
designated revision 0 (zero), and all previous revision notes will be removed from the body of the drawing.

Revisions subsequent to RFC
will be indicated by a numeric revision number. Each revision will include:



| |  |  | The initials of the person making the revision
| | - |  | ----------------------------------------------



| |  |  | The initials of the engineer responsible for the document
| | - |  | ---------------------------------------------------------



| |  |  | A brief description of the revision
| | - |  | -----------------------------------



| |  |  | A numbered triangle indicating the location of the revision of change in the body of the drawing
| | - |  | ------------------------------------------------------------------------------------------------



| |  |  | The date of the revision release
| | - |  | --------------------------------

All revisions in the body of the drawing should be clouded and carry the numbered triangle corresponding to the revision description in the revision block.

(f) Profession Engineering Seal

All RFC construction drawing and documents will bear a State of Louisiana
Professional Engineering Seal or as required by Louisiana law.

(g) Permanent Record

The active master project file will be maintained in ProjectWise and monitored by the Engineering Project Manager and project administrative assistant.



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2.3.2.2REVIEW & APPROVAL OF ENGINEERING SUBMITTALS

Contractor shall deliver as the design progresses, data, calculations, reports, drawings and specifications, and other information set forth below.
Contractor shall provide to Owner such other information as may be reasonably requested by Owner prior to release of documents for procurement or construction.

Owner shall be given ten (10) Business Days from receipt of technical information for review and comment. It is understood that the Owner and Contractor may, on occasion, mutually agree to develop and implement
accelerated submittal approval procedures to facilitate Project Schedule execution. Contractor shall develop and document the resolution/response to all Owners comments, whether provided in writing by Owner or documented by Contractor after a design
review meeting and provide to Owner for concurrence. The Contractor has the responsibility for identifying open issues and establishing a schedule for their closeout.

Contractor shall be obligated to act upon and consider Owners comments in good faith. If Owner has failed to deliver comments within such ten (10) Business Days, Contractor will consider documents approved
as submitted, but shall consider such comments, thereafter delivered by Owner.

Main drawings shall be to scale and fully detailed with
all revisions clearly marked.

All drawings submitted shall be distributed as mutually agreed by the Parties and documented on a document
distribution matrix. Final Contractor drawings shall include two hard copies and one electronic copy on disk formatted for use with Contractors latest version of AutoCad. Final supplier drawings shall include two hard copies and one electronic
copy on disk format where available. Contractor shall not be required to redraw supplier wiring diagrams, schematics, logic, etc. Contractor shall not be required to duplicate Supplier Equipment outlines from documents prepared by Suppliers of
Owner-provided Equipment. Rather, they shall be referenced as a black box or space envelope.

Contractor shall be responsible
for any discrepancies, errors or omissions in the drawings and the other particulars used, whether or not Owner has reviewed such drawings and particulars. Any review or comments given by Owner shall not relieve Contractor of any design
responsibility under this Agreement unless Owner specifically so agrees in writing.



---

Any technical information that has been modified either by Contractor, the Supplier or by Owner must be
reissued. Such reissues may require Change Orders and/or backcharges to Supplier. Contractor shall resubmit drawings in a timely manner such that Owner has up-do-date information.

2.3.2.3Technical Review Documentation

The following documentation and information shall be supplied in accordance with the engineering schedule for the Work:



|                                                                             |  |               
|---------------------------------------------------------------------------- |  | --------------
|                                                                             |  | Classification
|General arrangement and layout drawings                                      |  | 1             
|Site Plans (excluding calculations)                                          |  | 1             
|PFDs / P&I diagrams                                                          |  | 1             
|Control System architecture, logic, loop diagrams                            |  | 1             
|Single line electrical diagrams including control schematics                 |  | 1             
|Three line electrical diagrams                                               |  | 1             
|Metering and relay schematics including Project/Equipment protectives        |  | 1             
|Elementary Diagrams                                                          |  | 1             
|Underground Releases (excluding calculations)                                |  | 1             
|Design Calculations for Electrical, Process, Material Handling, and Emission |  | 1             
|Control System Sizing                                                        |  | 1             
|Equipment Specifications                                                     |  | 2             
|Civil Releases                                                               |  | 2             
|Structural Releases                                                          |  | 2             
|Piping Isometrics & Plans                                                    |  | 2             
|Electrical/Instrumentation interconnect and wiring drawings                  |  | 2             
|3D computer model review (updated every month)                               |  | 3             
|Equipment lists                                                              |  | 3             
|Electric power consumption list  Auxiliary Loads                            |  | 3             
|Instrument list                                                              |  | 3             
|Cable schedules, including cable numbering                                   |  | 3             
|Line list                                                                    |  | 3             
|Design Calculations not included in Classification 1                         |  | 3             
|Special tools needed for maintenance and calibration                         |  | 4             
|Supplier recommended spare parts lists and pricing                           |  | 4             

Description of Document Review Classifications:



| | 1. | Contractor shall submit drawings and calculations to Owner for review, comment, and approval before these drawings and calculations may be Released for Design/Construction.
Contractor shall submit specifications to Owner for review, comment, and approval before these specifications may be Released for Bid
| | -- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| | 2. | Drawings shall be submitted to Owner when they are Released for Construction. Specifications shall be submitted to Owner for approval when they are Released for Bid.
Contractor is not required to halt design, procurement, or construction while waiting for Owner review. However, revisions may be required if Owners review reveals the submittal does not comply with the requirements of this Agreement.
| | -- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | 3. | The Data Base will be updated periodically and provided to Owner not less than every ninety (90) calendar days unless no update has occurred within the last ninety
(90) calendar day period.
| | -- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | 4. | Contractor shall provide Supplier Drawings to Owner before Phase I Mechanical Completion or Mechanical Completion, as applicable.
| | -- | ---------------------------------------------------------------------------------------------------------------------------------

2.3.3Schedule Requirements and Acceptance Criteria

2.3.3.1Project Schedule

The Project Schedule is included as Appendix B to the
Agreement. The Contractor shall be responsible for scheduling of all design, procurement, and construction. Work progress will be measured, progress payments calculated and time extensions evaluated by approved updates and revisions to the Project
Schedule. The Critical Path Method shall be used to generate the Project Schedule.

The Project Schedule shall show the
order and interdependence of activities and the sequence in which the Work is to be accomplished. To the extent practical, each activity will have predecessor and successor ties. No individual onsite construction activity shall have a duration
greater than 20 days provided that the start date of that activity is within 30 days of the Project Schedule data date and the Project Schedule shall allow weekly progressing of activities to determine progress to within at least +/-10 percent
actual vs. planned activity progress. Once an activity exists on the Project Schedule, it may not be deleted and must remain in the logic unless mutually agreed by Owner and Contractor. When the Project Schedule has been approved by Owner, it will
become the baseline Project Schedule and will be used from that time forward to monitor the Work progress. The Milestone Schedule included as Appendix G of this Agreement provides the progress payment data.

The Contractor shall meet with the Owner and/or his representative(s) at least monthly to review actual progress made to date, activities
started and completed to date, and the percentage of Work completed to date on each activity started but not completed. These meetings will be conducted on-site, and with a frequency that complements the nature and urgency of the Work. Upon
completion of the joint review, the Contractor shall prepare the progressed baseline Project Schedule and submit it to the Owner. Each month, Contractor will provide Owner with (a) the progressed baseline Project Schedule



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(Primavera Project Planner (Level 3) resource loaded), in native format, (b) a monthly float analysis, and (c) a hard copy (60-day look ahead until
each of Phase 1 Mechanical and Mechanical Completion and 14-day look ahead from Mechanical Completion until Final Completion) Level 3 schedule (which will be delivered with the monthly progress report).

Any updates to the baseline Project Schedule shall incorporate all changes mutually agreed upon by the Contractor and Owner together
with all Changes resulting from approved Change Orders. These Change Order changes to the Project Schedule shall be tracked as separate line items on the Project Schedule.

Contractor shall show the following information for each Project Schedule activity:



|         |  |                               
|-------- |  | ------------------------------
|xxxii.   |  | Activity Number               
|         | 
|xxxiii.  |  | Activity Description          
|         | 
|xxxiv.   |  | Original Duration in Work Days
|         | 
|xxxv.    |  | Actual Duration in Work Days  
|         | 
|xxxvi.   |  | Early Start Date              
|         | 
|xxxvii.  |  | Early Finish Date             
|         | 
|xxxviii. |  | Total Float                   
|         | 
|xxxix.   |  | Responsibility Code           

Procurement Activities

Tasks related to the procurement of Material or Equipment shall be included as separate activities in the Project Schedule.

Procurement activities include:



|       |  |                                                                           
|------ |  | --------------------------------------------------------------------------
|xl.    |  | Material/Equipment submittal preparation, submittal and approval          
|       | 
|xli.   |  | Negotiations and PO issuing                                               
|       | 
|xlii.  |  | Delivery of technical documentation required to support detail design     
|       | 
|xliii. |  | Delivery of O&M Manuals                                                   
|       | 
|xliv.  |  | Material/Equipment fabrication                                            
|       | 
|xlv.   |  | Owner and Contractor supplied Material and Equipment shipment and delivery



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Owner Activities

Owner and other organization(s) activities that could impact progress shall be clearly identified. Owner activities include, but are not limited to:



|        |  |                                                
|------- |  | -----------------------------------------------
|xlvi.   |  | Owner Design Submittal reviews                 
|        | 
|xlvii.  |  | Design review meetings                         
|        | 
|xlviii. |  | Owner conducted inspections/ tests             
|        | 
|xlix.   |  | Required Utility Tie-ins and Outages           
|        | 
|l.      |  | Notices to Proceed                             
|        | 
|li.     |  | Delivery of Owner Furnished Material/ Equipment

Construction Activities

Construction activities shall include:



|      |  |                                                                                                                      
|----- |  | ---------------------------------------------------------------------------------------------------------------------
|lii.  |  | Tasks related to mobilization and demobilization of Contractor and each Subcontractor and Supplier                   
|      | 
|liii. |  | Installation of permanent or temporary work by tradesmen and/or Subcontractors                                       
|      | 
|liv.  |  | Testing and inspections (including special inspections) of installed Work by technicians, inspectors and/or engineers
|      | 
|lv.   |  | Startup, testing, commissioning, and turnover activities                                                             
|      | 
|lvi.  |  | Training                                                                                                             
|      | 
|lvii. |  | Administrative tasks necessary to start, proceed with, accomplish or finalize the scope of Work                      

Contractor activities shall reflect actual workdays, including any overtime,
double shifts, weekends and holidays worked.

Responsibility Code

All activities in the Project Schedule shall be identified with the party responsible to perform the task. Responsible parties include:



|       |  |                                       
|------ |  | --------------------------------------
|lviii. |  | Contractor                            
|       | 
|lix.   |  | Subcontractors                        
|       | 
|lx.    |  | Third party engineering firms (if any)
|       | 
|lxi.   |  | Inspection and testing firms          
|       | 
|lxii.  |  | Owner                                 
|       | 
|lxiii. |  | Others                                



---

Only one responsible party will be shown for each activity. This party shall be
identified by a responsibility code such as ELEC for electrical subcontractor.

Substantial and Final Completion

These schedule activities shall be defined in accordance with the Agreement and shall each be a zero duration milestone with an
unconstrained date representing the Contractors Phase I Substantial Completion, Substantial Completion or Final Completion Dates.

2.3.4Quality Assurance Requirements and Acceptance Criteria

Contractor will:



|       |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|------ |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|lxiv.  |  | Provide and maintain a documented Quality Assurance Program (including implementing procedures and inspection system) covering the items and services to be furnished under this Appendix A.
The program shall include those items and services provided by Contractors Subcontractors. The program shall include consideration of the technical aspects of the activities affecting quality from design through procurement of items and
services and installation. The program shall provide control over activities affecting quality to an extent consistent with their level of importance. The Contractor shall provide and Owner shall review, and approve, the Quality Assurance program
prior to proceeding with the Work.
|       | 
|lxv.   |  | Ensure Personnel meet the minimum qualification, education, licensing, certification, and training requirements as required by Applicable Legal Requirements.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|       | 
|lxvi.  |  | The Contractor is responsible for ensuring that construction is completed in accordance with the approved drawings and specifications, and approved field and design changes. Performance
Testing and acceptance, including Reliability Testing, shall be in accordance with the Contractor-prepared and Owner-approved test plans and associated procedures.                                                                                                                                                                                                                                                                                                                                                                       
|       | 
|lxvii. |  | The Contractor shall provide and maintain a complete construction inspection system that is acceptable to Owner and that shall ensure that inspectors are appropriately qualified, trained, and
certified. Inspection Personnel shall document items that were inspected, acceptance criteria and results, and identify any non-conforming results. Non-conformances shall be documented in accordance with the Contractors approved Quality
Assurance Program and shall be tracked to closure to Owners satisfaction prior to requesting payment for the nonconforming items or Work. Corrective actions, and actions to prevent their recurrence, shall be implemented to prevent recurring
non-conformances.                   



---

|        |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|------- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|lxviii. |  | Owner will have one or more representative(s) and/or agents on-site, each or any of which may witness and/or conduct inspections and tests throughout construction while Work is in progress.
Contractor shall keep Owners Personnel and/or agents properly informed of Contractors upcoming inspections and tests and track and close Owner identified non-conformances in the same manner as those identified by Contractors
inspection Personnel. Contractor shall conduct weekly construction coordination meetings with Owner on-site representative(s) and/or agents present.
|        | 
|lxix.   |  | Obtain prior written approval from Owner for any deviations from the Quality Assurance Program and Contractors approved Project Execution Plans.                                                                                                                                                                                                                                                                                                                                                                                                                                      
|        | 
|lxx.    |  | Provide Owner access to all relevant records and/or Personnel.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|        | 
|lxxi.   |  | Protect Project information and data to prevent unauthorized use, destruction, or loss.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|        | 
|lxxii.  |  | Contractor shall be responsible for closing all open issues to Owners satisfaction associated with non-conforming conditions, corrective actions, design and/or field changes, up-to-date
red-line drawings prior to acceptance and/or payment to Contractor.                                                                                                                                                                                                                                                                                                                         

The acceptable criteria for deliverables includes the following:



|        |  |                                                                                                                                                                                                                                                                                                       
|------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|lxxiii. |  | All deliverables will be fully complete documents. That is, draft deliverables do not imply partially complete or unchecked deliverables.                                                                                                                                                           
|        | 
|lxxiv.  |  | All deliverables will include the signature of the responsible author and the signature of the document checker indicating that the document has been properly reviewed according to the
approved Quality Assurance Program and implementing procedures and is suitable for release.                  
|        | 
|lxxv.   |  | Documents that do not meet these minimum requirements may, at Owners sole discretion, not be accepted. If documents do not meet these minimum requirements, the Contractor must revise
and resubmit the documents at no additional cost to Owner within a time frame that does not delay the project.

2.3.5Project Communications

Meetings and Progress Reports

Weekly Design and Construction Status Meetings: Contractor will hold a status meeting/conference call each week with Owner, at an agreed upon time and place, for the duration of the project. The purpose of the meetings will be to:



|       |  |                                                       
|------ |  | ------------------------------------------------------
|lxxvi. |  | Report design and construction status versus schedule.



---

|         |  |                                                                                               
|-------- |  | ----------------------------------------------------------------------------------------------
|lxxvii.  |  | Identify potential problems related to technical issues, scope, cost, schedule, and/or safety.
|         | 
|lxxviii. |  | Resolve existing problems.                                                                    
|         | 
|lxxix.   |  | RFIs.                                                                                         

The Contractor is encouraged to use these meetings during the design phase to
review the design and to present in-progress design documents for discussion with Owners reviewers prior to release of the documents.

Meeting Minutes (Confirmation Notices)

Provide minutes of each meeting and each teleconference whereby
Contractor believes project decisions or commitments are made by or with Owner, Subcontractors, Equipment suppliers and any other entity affecting the Project. The minutes are to be developed and distributed by e-mail within three (3) Business
Days of the date of the meeting or teleconference. The minutes are to list the participants and their phone numbers, state the date, indicate the location of the meeting, identify major issues, document resolution of situations and conclusions
drawn, serve as a transmittal of documents exchanged, list all action items and describe the effect of the meetings conclusions relative to the Project Schedule or Total Work Cost.

Monthly Progress Reports

At a minimum, Contractor shall provide Owner with monthly progress reports detailing cost, schedule, and manpower performance (actual vs. planned); summarize Work performed during the period; Work and major procurements planned for the
following month; design, construction, inspection, or delivery issues of concern and corrective actions planned to address the issues.

Project Website

The Contractor shall create, maintain, and administer a Project website for the access and
storage of key project documents generated throughout design and construction. The website shall include at a minimum the following items: Contractors Quality Assurance Program and Implementing procedures; Project Execution Plan(s), baseline
Project Schedule; working or look-ahead schedule; meeting minutes; progress reports; all engineering and construction deliverables; RFIs; Design Changes; Field Design Changes; inspection and testing procedures and results; Non-Conformance Reports
(NCRs); approved for construction drawings and specifications; bid and award packages; commissioning and start-up plans and results; and key project team communications. Documents shall be posted to the website within 24 hours of generation. The
website shall be viewable remotely through the internet with secure and controlled access to select project team members.



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Requests for Information (RFIs)

Develop RFIs and distribute by e-mail using an Owner-approved RFI process. RFIs are not, and should not be considered, a Change to the
Agreement.

Look-Ahead Schedules

During construction, the Contractor shall, on a weekly basis, provide a three week look-ahead schedule that encompasses the Work planned for the upcoming three week period. The schedule shall include key Equipment
deliveries, construction activities, testing and inspections, and support required from Owner and other organizations. This schedule shall be reviewed and updated during weekly construction meetings and shall be provided a minimum of one full
Business Day prior to the construction meetings.

Design Change Notification

The Contractor shall provide the Owner copies of all field or design changes. Except to the degree mutually agreed-to and amended in
writing, the Contractor shall request Owner approval of all design Changes pursuant to the Agreement prior to proceeding with detailed design and/or construction of the Change.



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Attachment 1

Engineering Deliverables

P&IDs



|     |  |      |  |        |  |                                                                   |  |    
|---- |  | ---- |  | ------ |  | ----------------------------------------------------------------- |  | ---
|Area |  | Type |  | Number |  | Title                                                             |  | Rev
|100  |  | PO   |  | 001    |  | P&ID Coal Handling System                                         |  | B  
|101  |  | PO   |  | 001    |  | P&ID Coal Handling System                                         |  | B  
|101  |  | PO   |  | 002    |  | P&ID Coal Handling Vacuum System                                  |  | B  
|201  |  | PO   |  | 001    |  | P&ID Multi-Hearth Furnace MHF 1                                   |  | B  
|201  |  | PO   |  | 002    |  | P&ID Multi-Hearth Furnace MHF 2                                   |  | B  
|201  |  | PO   |  | 003    |  | P&ID Multi-Hearth Furnace MHF 3                                   |  | B  
|201  |  | PO   |  | 004    |  | P&ID Multi-Hearth Furnace MHF 4                                   |  | B  
|201  |  | PO   |  | 007    |  | P&ID Multi-Hearth Furnace Product Cooling Loop Exchangers & Pumps |  | B  
|201  |  | PO   |  | 008    |  | P&ID Multi-Hearth Furnace MHF 1 & 2 Screw Coolers Water Side      |  | B  
|201  |  | PO   |  | 009    |  | P&ID Multi-Hearth Furnace MHF 3 & 4 Screw Coolers Water Side      |  | B  
|301  |  | PO   |  | 001    |  | P&ID Product Handling Activated Carbon HG Adsorption System       |  | B  
|301  |  | PO   |  | 002    |  | P&ID Product Handling                                             |  | B  
|301  |  | PO   |  | 003    |  | P&ID Product Handling Product Storage-Truck                       |  | B  



---

|    |  |    |  |     |  |                                                                         |  |  
|--- |  | -- |  | --- |  | ----------------------------------------------------------------------- |  | -
|401 |  | PO |  | 001 |  | P&ID Water Systems & Utilities Demineralize Water & Transfers           |  | B
|401 |  | PO |  | 002 |  | P&ID Water Systems & Utilities Raw Water                                |  | B
|401 |  | PO |  | 003 |  | P&ID Water Systems & Utilities Plant/Treated Water                      |  | B
|401 |  | PO |  | 004 |  | P&ID Water Systems & Utilities Wastewater                               |  | B
|401 |  | PO |  | 005 |  | P&ID Water Systems & Utilities Ultrafilter Skid 1                       |  | B
|401 |  | PO |  | 006 |  | P&ID Water Systems & Utilities Circulating Water                        |  | B
|401 |  | PO |  | 007 |  | P&ID Water Systems & Utilities Chemical Treatment                       |  | B
|401 |  | PO |  | 008 |  | P&ID Water Systems & Utilities Potable Water Distribution               |  | B
|401 |  | PO |  | 009 |  | P&ID Water Systems & Utilities Plant Air Distribution                   |  | B
|401 |  | PO |  | 010 |  | P&ID Water Systems & Utilities Plant Air Distribution                   |  | B
|401 |  | PO |  | 011 |  | P&ID Water Systems & Utilities Instrument Air Distribution              |  | B
|401 |  | PO |  | 012 |  | P&ID Water Systems & Utilities Fuel Gas Distribution                    |  | B
|401 |  | PO |  | 013 |  | P&ID Water Systems & Utilities Utility Stations Air and Plant Water     |  | B
|401 |  | PO |  | 014 |  | P&ID Water Systems & Utilities Water Treatment IST Pass Reverse Osmosis |  | B



---

|    |  |    |  |     |  |                                                                         |  |  
|--- |  | -- |  | --- |  | ----------------------------------------------------------------------- |  | -
|401 |  | PO |  | 015 |  | P&ID Water Systems & Utilities Water Treatment 2nd Pass Reverse Osmosis |  | B
|401 |  | PO |  | 016 |  | P&ID Water Systems & Utilities Water Treatment Electrodeionization Skid |  | B
|401 |  | PO |  | 017 |  | P&ID Water Systems & Utilities Water Treatment Process Runoff           |  | B
|401 |  | PO |  | 018 |  | P&ID Water Systems & Utilities Water Treatment Ultrafilter Skid 1       |  | B
|401 |  | PO |  | 019 |  | P&ID Water Systems & Utilities Chemical Feed System                     |  | B
|401 |  | PO |  | 020 |  | P&ID Water Systems & Utilities UF Clean in Place System                 |  | B
|401 |  | PO |  | 020 |  | P&ID Water Systems & Utilities UF Clean in Place System                 |  | B
|401 |  | PO |  | 021 |  | P&ID Water Systems & Utilities RO/EDI Clean in Place System             |  | B
|401 |  | PO |  | 022 |  | P&ID Water Systems & Utilities Water Treatment                          |  | B
|501 |  | PO |  | 001 |  | P&ID Power Island Afterburner Combustor                                 |  | B
|501 |  | PO |  | 002 |  | P&ID Power Island High Pressure Steam                                   |  | B
|501 |  | PO |  | 003 |  | P&ID Power Island IP/LP Steam System                                    |  | B
|501 |  | PO |  | 004 |  | P&ID Power Island Waste Heat Recovery Boiler                            |  | B
|501 |  | PO |  | 005 |  | P&ID Power Island Feedwater                                             |  | B



---

|    |  |    |  |     |  |                                                                       |  |  
|--- |  | -- |  | --- |  | --------------------------------------------------------------------- |  | -
|501 |  | PO |  | 006 |  | P&ID Power Island Boiler Blowdown System                              |  | B
|501 |  | PO |  | 007 |  | P&ID Power Island Condensate System                                   |  | B
|501 |  | PO |  | 008 |  | P&ID Power Island Turbine Drain Tank & Gland Steam                    |  | B
|501 |  | PO |  | 009 |  | P&ID Power Island Turbine Generator Main Steam System                 |  | B
|501 |  | PO |  | 010 |  | P&ID Power Island Generator Cooling System                            |  | B
|501 |  | PO |  | 011 |  | P&ID Power Island Turbine Lube Oil System                             |  | B
|501 |  | PO |  | 012 |  | P&ID Power Island Turbine Generator Air Ejector System                |  | B
|501 |  | PO |  | 013 |  | P&ID Power Island Waste Heat Recovery Boiler Soot Blower & Ash System |  | B
|601 |  | PO |  | 001 |  | P&ID Emission Control Off Gas/Afterburner & Boiler Gas Side           |  | B
|601 |  | PO |  | 002 |  | P&ID Emission Control Spray Dryer Absorber                            |  | B
|601 |  | PO |  | 003 |  | P&ID Emission Control Lime Slurry System                              |  | B
|601 |  | PO |  | 004 |  | P&ID Emission Control Lime Slurry System                              |  | B
|601 |  | PO |  | 005 |  | P&ID Emission Control Baghouse                                        |  | B
|601 |  | PO |  | 006 |  | P&ID Emission Control Flue Gas, ID Fan & Stack                        |  | B



---

|               |  |      |  |      |  |                                                                 |  |    
|-------------- |  | ---- |  | ---- |  | --------------------------------------------------------------- |  | ---
|601            |  | PO   |  | 007  |  | P&ID Emission Control Ash Handling                              |  | B  
|700            |  | EO   |  | 001  |  | Power Distribution Electrical Single-Line Diagram               |  | B  
|800            |  | E4   |  | SK02 |  | Activated Carbon Plant Hazardous Area Plan                      |  | A  
|800            |  | E4   |  | SK03 |  | Activated Carbon Plant Security Site Plan                       |  | A  
|800            |  | E6   |  | SK01 |  | Activated Carbon Site Plan Grounding                            |  | A  
|800            |  | E6   |  | SK02 |  | Activated Carbon Plant Site Plan - Sketch Lighting for Estimate |  | A  
|800            |  | MO   |  | 001  |  | Site Plan                                                       |  | A  
|800            |  | MO   |  | 003  |  | Site Layout Accessways Construction Plan                        |  | A  
|800            |  | PO   |  | 001  |  | P&ID Legend & Symbology                                         |  | B  
|800            |  | S9   |  | 001  |  | Architectural Control/Warehouse Building First Floor Plan       |  | A  
|800            |  | S9   |  | 002  |  | Architectural Control/Warehouse Building Second Floor Plan      |  | A  
|800            |  | S9   |  | 003  |  | Architectural Control/Warehouse Building Cross Sections         |  | A  
|800            |  | S9   |  | 004  |  | Architectural Control/Warehouse Building Elevations             |  | A  
|800            |  | U1   |  | 100  |  | HVAC Concept Plan                                               |  | A0 
|800            |  | U3   |  | 100  |  | Plumbing Concept Plan                                           |  | A0 
|801            |  | PO   |  | 004  |  | P&ID Site & Buildings Fire Protection                           |  | B  
|               |  |      |  |     
|Specifications |  |      |  |      |  |                                                                 |  |    
|5003008        |  | Spec |  | 1400 |  | Site Design Conditions                                          |  | A0 
|5003008        |  | Spec |  | 8001 |  | Instrument Controls Details Design Criteria                     |  | RD0
|5003008        |  | Spec |  | 8002 |  | Instrumentation Installation                                    |  | RD0
|5003008        |  | Spec |  | 8003 |  | Distributed Control System                                      |  | RD0
|5003008        |  | Spec |  | 8004 |  | Fiber Optic System Termination & Acceptance Testing             |  | RD0
|5003008        |  | Spec |  | 8005 |  | Instrument Controls Furnished w/Mechanical Equipment            |  | RB0



---

|        |  |      |  |           |  |                                                      |  |    
|------- |  | ---- |  | --------- |  | ---------------------------------------------------- |  | ---
|5003008 |  | Spec |  | AC001     |  | HVAC Design Criteria - Office & Maintenance Building |  | A0 
|5003008 |  | Spec |  | AC195     |  | Baghouse Dust Collector, Bin Vents & Fans            |  | A0 
|5003008 |  | Spec |  | C221      |  | Earthwork & Grading                                  |  | RC0
|5003008 |  | Spec |  | C222      |  | Fill, Excavation & Backfill for Structures           |  | RC0
|5003008 |  | Spec |  | C251      |  | Manhole & Drainage Structures                        |  | RC0
|5003008 |  | Spec |  | C252      |  | Sanitary & Process Sewer & Storm Drain               |  | RC0
|5003008 |  | Spec |  | C260      |  | Graded Aggregate Base & Subbase                      |  | RC0
|5003008 |  | Spec |  | C261      |  | Asphalt Paving                                       |  | RC0
|5003008 |  | Spec |  | C262      |  | Concrete Paving                                      |  | RC0
|5003008 |  | Spec |  | C271      |  | Fencing                                              |  | RC0
|5003008 |  | Spec |  | C282      |  | Grassing                                             |  | RC0
|5003008 |  | Spec |  | CHS       |  | Coal Handling System                                 |  | A0 
|5003008 |  | Spec |  | E339      |  | Prefabricated Electrical Building                    |  | RA0
|5003008 |  | Spec |  | E517      |  | 4,000 Volt AC Induction & Synchronous Motors         |  | RA0
|5003008 |  | Spec |  | E535      |  | 460 Volt AC Induction Motors                         |  | RA0
|5003008 |  | Spec |  | E778      |  | Generator Step-Up Transformers                       |  | RA0
|5003008 |  | Spec |  | E9002     |  | Electrical Construction & Installation               |  | RA0
|5003008 |  | Spec |  | ECS       |  | Environmental Control System                         |  | A0 
|5003008 |  | Spec |  | GEN       |  | Generator                                            |  | A0 
|5003008 |  | Spec |  | M20901    |  | Product Coolers                                      |  | A0 
|5003008 |  | Spec |  | M23525    |  | Bucket Elevators                                     |  | A0 
|5003008 |  | Spec |  | M24410    |  | Coal Crusher                                         |  | A0 
|5003008 |  | Spec |  | M39127    |  | Weigh Belt - Gravimetric Feeders                     |  | A0 
|5003008 |  | Spec |  | M47001    |  | Roller Mills                                         |  | A0 
|5003008 |  | Spec |  | ME23501   |  | Conveyor & Transfer Chutes                           |  | A0 
|5003008 |  | Spec |  | ME23530   |  | Special Switches - Diverter Gate Actuators           |  | A0 
|5003008 |  | Spec |  | P01000-A1 |  | Piping Design Criteria                               |  | A0 
|5003008 |  | Spec |  | P020 - 04 |  | General Piping                                       |  | A0 
|5003008 |  | Spec |  | P040 - 02 |  | Thermal Insulation                                   |  | A0 
|5003008 |  | Spec |  | PB010     |  | Plumbing                                             |  | A0 
|5003008 |  | Spec |  | PHS       |  | Product Handling System                              |  | A0 
|5003008 |  | Spec |  | PR232     |  | Steam Surface Condenser                              |  | A0 
|5003008 |  | Spec |  | PR256     |  | Deaerator                                            |  | A0 
|5003008 |  | Spec |  | PR389     |  | ID Draft Fans                                        |  | A0 
|5003008 |  | Spec |  | PR3932    |  | CEMS                                                 |  | A0 
|5003008 |  | Spec |  | PR598     |  | Boiler Feedwater Pumps                               |  | A0 
|5003008 |  | Spec |  | S231      |  | Auger Cast Piles                                     |  | RC2



---

|        |  |      |  |      |  |                                                    |  |    
|------- |  | ---- |  | ---- |  | -------------------------------------------------- |  | ---
|5003008 |  | Spec |  | S330 |  | Cast-In-Place Concrete                             |  | RC0
|5003008 |  | Spec |  | S360 |  | Cement & Epoxy Grout                               |  | RC0
|5003008 |  | Spec |  | S510 |  | Structural Steel                                   |  | RC0
|5003008 |  | Spec |  | S515 |  | Galvanizing Structural Steel & Miscellaneous Steel |  | RC0
|5003008 |  | Spec |  | S550 |  | Miscellaneous Steel & Metals                       |  | RC0
|5003008 |  | Spec |  | S980 |  | Protective Coatings                                |  | RC0
|5003008 |  | Spec |  | STG  |  | Steam Turbine Generator                            |  | A0 

Other

System
Description Control & Monitoring Systems, Rev. 0

DCS Conceptual Block Diagram, Rev. D2

Fiber Optic System Conceptual Block Diagram, Rev. D4

Plant Instrument Index,
Rev. 4

Raw Water Intake Conceptual Block Diagram, Rev. D0

Equipment List, Rev. 9/7/08



---

APPENDIX B

Project Schedule

*



---

APPENDIX C

Performance Test Requirements and Special Repairs, Replacements and Refurbishments

Purpose of Performance Tests:

The performance tests described herein are to demonstrate that the Project can perform such that environmental and performance criteria can be met
continuously and concurrently for the representative operating periods. Full test protocols, as appropriate to provide guidance to all parties during testing and analysis, will be developed collaboratively by Contractor and Owner during detailed
engineering.

Scope of Demonstration:

The Project will be tested in three stages:

1) upon completion of two (2) Multi Hearth Furnaces, such MHFs,
and all associated equipment necessary to independently operate such MHF(s), excluding the power generation, will be performance tested for * hours, the Phase 1 Performance Test, to demonstrate initial operation, described in Attachment
C.1;

2) upon completion of all four (4) MHFs, the full Project, to include the power island, the emission control
system and all material handling systems, will be performance tested for * hours, the Performance Test, to demonstrate full Project performance criteria and guarantees, described in Attachment C.2; and

3) upon completion of, or concurrent with, the Performance Test, and prior to Final Completion, the Reliability Test will be
performed for * days to demonstrate reliability of the full Project, described in Attachment C.3.



---

Performance Testing Requirements

Appendix C.1  Phase I Performance Test

Purpose of Phase I Performance Test:

The Phase I Performance Test described herein is the stage 1 initial operation performance test to demonstrate that the Project, excluding the power generation,
(Phase I Portion of the Project) can perform such that environmental and performance criteria with two MHFs in service at initial operating levels can be met continuously and concurrently for * hours.

Scope of Demonstration:

Plant operation will be monitored using the
installed plant instrumentation and normal operational sampling. Plant staffing will be at normal levels and all operation and maintenance will be performed by plant staff in accordance with the instructions and manuals provided by Contractor.

Various temporary and manual measurements will be conducted to supplement plant instrumentation during the Phase I Performance Test period. These will be
conducted by outside contractors, plant staff, or project team personnel as agreed to in the final Phase I Performance Test testing protocol.

Specific
Requirements:

Prior to the Phase I Performance Test, Contractor shall arrange for a third party to independently monitor the stack emissions with a
certified test instrument set in parallel with the continuous emission monitoring system (CEMS).

Contractor shall satisfy criteria defined in Table C.1,
which summarizes the minimum acceptable performance and scaled performance over the equipment load range during the Phase I Performance Test (Phase I Performance Requirements).

Contractor shall satisfy any specific Permit requirement not noted in Table C.1 for initial operation and/or operation during the Permits allowed shakedown
period.

Compliance with the environmental Permits is expected at all operating conditions. The air Permit allows for initial operation before the
emissions compliance test without specific demonstration of compliance, except for pollutants such as NOx and SO2, which must be initially monitored by CEMS.



---

Table C.1 (Page 1 of 2).

RREP Phase I Performance Test

Acceptance Criteria Summary



|                                                                                                            |  |                                                |  |                                                             |  |                                                 |  |                                                                                                                        
|----------------------------------------------------------------------------------------------------------- |  | ---------------------------------------------- |  | ----------------------------------------------------------- |  | ----------------------------------------------- |  | -----------------------------------------------------------------------------------------------------------------------
|Parameter                                                                                                   |  | Design Point * ton/day/furnace Production rate |  | Adjustment methodologyfor parameter at lowerproduction rate |  | Minimum AcceptableProduction (28%
designmargin) |  | Metrics                                                                                                                
|activated carbon Production Rate (all balance of plant systems support this rate)                           |  | *                                              |  | Linear pro-rata                                             |  | *                                               |  | Coal gravimetric feeders; activated carbon weigh belt scale; day bins inventory for reference                          
|                                                                                                            |  |                                                |  |                                                            
|activated carbon Quality:  Particle size  * delivery (Phase I Activated Carbon Specification Requirement) |  | *                                              |  | None  None                                                  |  | *                                               |  | Sieve test at roller mill outlet * flow rate and activated carbon feeder rate; product day silo inventory for reference



---

Table C.1 Continued (Page 2 of 2).

Phase I Performance Test

Environmental Acceptance Criteria Summary

Main Stack Emission Maximums, Unless Otherwise Noted



|                                     |  |                                                |  |                                                             |  |                                                                                                |  |                                                                                                                   
|------------------------------------ |  | ---------------------------------------------- |  | ----------------------------------------------------------- |  | ---------------------------------------------------------------------------------------------- |  | ------------------------------------------------------------------------------------------------------------------
|Parameter (Main Stack Emissions)     |  | Design Point * ton/day/furnace Production rate |  | Adjustment methodologyfor parameter at lowerproduction rate |  | Minimum AcceptableProduction (28% designmargin) (Phase
IEnvironmental ComplianceRequirement) |  | Metrics                                                                                                           
|NOx*                                 |  | *                                              |  | none                                                        |  | *                                                                                              |  | EPA Methods 7E, 2 & 4**                                                                                           
|                                     |  |                                                |  |                                                            
|SO2, lb/hr*                          |  | *                                              |  | none                                                        |  | *                                                                                              |  | EPA Methods 6C, 2 & 4**                                                                                           
|                                     |  |                                                |  |                                                            
|SO2, removal efficiency and lb/MMBtu |  | *                                              |  | none                                                        |  | *                                                                                              |  | % removal by SDA inlet SO2and stack CEMS; MMBtu by natural gas flow, and MHF
gas calorimeter and gas chromatograph
|                                     |  |                                                |  |                                                            
|CO*                                  |  | *                                              |  | none                                                        |  | *                                                                                              |  | EPA Method 10 and Minimum temperature of 1600 F in flue gas                                                       
|                                     |  |                                                |  |                                                            
|VOC*                                 |  | *                                              |  | none                                                        |  | *                                                                                              |  | EPA Methods 18 and 25A and Minimum temperature of 1600 F in flue gas                                              
|                                     |  |                                                |  |                                                            
|PM10* (Filterable + Condensable)     |  | *                                              |  | none                                                        |  | *                                                                                              |  | Observe Opacity per Method 22, casual observation                                                               
|                                     |  |                                                |  |                                                            
|Total Particulate Matter             |  | *                                              |  | none                                                        |  | *                                                                                              |  | Observe Opacity per Method 22, casual observation                                                               
|                                     |  |                                                |  |                                                            
|Opacity                              |  | *                                              |  | none                                                        |  | *                                                                                              |  | Method 22, casual observation                                                                                   
|NH3                                  |  | *                                              |  | none                                                        |  | *                                                                                              |  | No initial demonstration required                                                                                 



---

|                                           |  |    |  |      |  |    |  |                                  
|------------------------------------------ |  | -- |  | ---- |  | -- |  | ---------------------------------
|                                           |  |    |  |     
|H2SO4*                                     |  | *  |  | none |  | *  |  | No initial demonstration required
|                                           |  |    |  |     
|Natural Gas consumption in the Afterburner |  | *% |  | none |  | *% |  | No initial demonstration required



|* | Maximum single hourly lbs/hr value of noted emissions can exceed given limit by up to 20%
|- | -----------------------------------------------------------------------------------------



---

Clarifications



|1. | Sampling and measurements will be continuous for parameters that have appropriate continuous measurement devices, except for necessary off-line time for calibration. Other
parameters will be sampled or measured on at least an hourly basis.
|-- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|2. | Test data, unless noted otherwise, will be the average of all valid collected data for the * hour test period, with the normal expectation that data representing at least * hours of
measurement will be available for each parameter.
|-- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|3. | The SO2requirement
for % removal and/or lb/MMBTU compliance will be demonstrated with the coal available during the Phase I Performance Test. Further demonstration of the alternative % removal and/or lb/MMBtu will be a Warranty issue and either level, as applicable to
a given load condition and coal sulfur level, must be vendor guaranteed.
|-- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|4. | The SO2percent
reduction will be derived from the stack CEMS mass emissions rate compared to the SDA inlet SO2mass emissions rate.
|-- | ----------------------------------------------------------------------------------------------------------------------------------



|5. | The lb/MMBtu will be derived from the stack CEMS SO2emissions rate, and heat input rate due to the burning of fuels in the afterburner, including natural gas and MHF byproduct waste gas, but excluding the sensible and latent heat content of the MHF waste gas.
|-- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|6. | activated carbon throughput and quality are dependent on the activated carbon entering the roller mills having a Blamire Grindability Number >0.85 and a maximum absorbed moisture
content of 10% by weight.
|-- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



---

Crowfoot Project

Performance Testing Requirements

Appendix C.2  Performance Test

Purpose of Performance Test:

The Performance Test described in this
Appendix C is the Performance Test to demonstrate that the Project, including the power island, the emission control system, and all material handling systems, can perform such that environmental and performance criteria at guarantee levels can be
met continuously and concurrently for 8 (eight) hours. All four MHFs are required to be operating at or above the criteria identified in the column labeled Minimum Acceptable Production in Table C.2.

Scope of Demonstration:

Plant operation will be monitored using the
installed plant instrumentation and normal operational sampling. Plant staffing will be at normal levels and all operation and maintenance will be performed by plant staff in accordance with the instructions and manuals provided by Contractor.

Various temporary and manual measurements will be conducted to supplement plant instrumentation during the Performance Test period. These will be
conducted by outside contractors, plant staff, or project team personnel as agreed to in the final Performance Test testing protocol(s).

Specific
Requirements:

Contractor shall satisfy criteria defined in Table C.2, which summarizes the minimum acceptable performance and scaled performance over
the equipment load range during the Performance Test.

Satisfy any specific Permit requirement not noted in Table C.2 for initial operation (the
Permit-allowed shakedown period) prior to the emissions performance compliance test (the Performance Requirements).

Compliance
with the environmental Permits is expected at all operating conditions. The air Permit allows for initial operation before the emissions compliance test without specific demonstration of compliance, except for pollutants such as NOx and SO2, which
must be initially monitored by CEMS.

Contractor shall complete the drift, linearity and RATA test on the CEMS and certify it before or during the
Performance Test testing process.



---

Table C.2 (Page 1 of 2).

Performance Test

Acceptance Criteria Summary



|                                                                                                    |  |                                                |  |                                                             |  |                                               |  |                                                |  |                                                                                                                                              
|--------------------------------------------------------------------------------------------------- |  | ---------------------------------------------- |  | ----------------------------------------------------------- |  | --------------------------------------------- |  | ---------------------------------------------- |  | ---------------------------------------------------------------------------------------------------------------------------------------------
|Parameter                                                                                           |  | Design Point * ton/day/furnace Production rate |  | Adjustment methodologyfor parameter at lowerproduction rate |  | 10% Design MarginExample Case                 |  | MinimumAcceptableProduction (28%design
margin) |  | Metrics                                                                                                                                      
|activated carbon Production Rate (all balance of plant systems support this rate)                   |  | *                                              |  | Linear pro-rata                                             |  | *                                             |  | *                                              |  | Coal gravimetric feeders; activated carbon weigh belt scale; day bins inventory for reference                                                
|                                                                                                    |  |                                                |  |                                                             | 
|activated carbon Quality:  Particle size  * delivery (Activated Carbon Specification Requirement) |  | *                                              |  | None  None                                                  |  | *  *% by weight of liquid to activated carbon |  | * *% by
weight of liquid to activated carbon   |  | Sieve test at roller mill outlet Sodium bromide solution flow rate and activated carbon feeder rate; product day silo inventory for reference
|                                                                                                    |  |                                                |  |                                                             | 
|Net electrical output, kW                                                                           |  | *                                              |  | None                                                        |  | *                                             |  | *(Net Electrical Output Requirement)         |  | kW at GSU 34.5 kV (CLECO metering)                                                                                                           
|                                                                                                    |  |                                                |  |                                                             | 
|Pebble Lime consumption                                                                             |  | *                                              |  | Linear pro-rata                                             |  | *                                             |  | * (Lime Consumption Requirement)             |  | Lime slurry flowrate and density to SDA                                                                                                      



---

Table C.2 Continued (Page 2 of 2).

Performance Test

Environmental Acceptance Criteria Summary

Main Stack Emission Maximums, Unless Otherwise Noted



|                                     |  |                                                |  |                                                              |  |                               |  |                                                                                       |  |                                                                                                                          
|------------------------------------ |  | ---------------------------------------------- |  | ------------------------------------------------------------ |  | ----------------------------- |  | ------------------------------------------------------------------------------------- |  | -------------------------------------------------------------------------------------------------------------------------
|Parameter (Main Stack
Emissions)     |  | Design Point * ton/day/furnace Production rate |  | Adjustmentmethodology for parameter at lower
production rate |  | 10% Design MarginExample Case |  | Minimum AcceptableProduction (28%design
margin)(EnvironmentalComplianceRequirement) |  | Metrics                                                                                                                  
|NOx*                                 |  | *                                              |  | Linear pro-rata                                              |  | *                             |  | *                                                                                     |  | CEMS and EPA Methods 2 & 4**                                                                                             
|                                     |  |                                                |  |                                                              | 
|SO2, lb/hr*                          |  | *                                              |  | Linear pro-rata                                              |  | *                             |  | *                                                                                     |  | CEMS and EPA Methods 2 & 4**                                                                                             
|                                     |  |                                                |  |                                                              | 
|SO2, removal efficiency and lb/MMBtu |  | *                                              |  | none                                                         |  | *                             |  | *                                                                                     |  | % removal by SDA inlet SO2monitor and stack CEMS;MMBtu by natural gas flow, and MHF gas calorimeter and gas chromatograph
|                                     |  |                                                |  |                                                              | 
|CO*                                  |  | *                                              |  | Linear pro-rata                                              |  | *                             |  | *                                                                                     |  | CO monitor by EPA Method 10 and Methods 2 & 4                                                                            
|                                     |  |                                                |  |                                                              | 
|VOC*                                 |  | *                                              |  | Linear pro-rata                                              |  | *                             |  | *                                                                                     |  | EPA Methods 18 and 25A                                                                                                   
|                                     |  |                                                |  |                                                              | 
|PM10* (Filterable + Condensable)     |  | *                                              |  | Linear pro-rata                                              |  | *                             |  | *                                                                                     |  | EPA Methods 5 and 202                                                                                                    



---

|                                           |  |    |  |                 |  |   |  |   |  |                                                       
|------------------------------------------ |  | -- |  | --------------- |  | - |  | - |  | ------------------------------------------------------
|                                           |  |    |  |                 | 
|Total Particulate Matter                   |  | *  |  | none            |  | * |  | * |  | EPA Methods 5 and 202                                 
|                                           |  |    |  |                 | 
|Opacity                                    |  | *  |  | none            |  | * |  | * |  | EPA Method 9                                          
|                                           |  |    |  |                 | 
|NH3                                        |  | *2 |  | none            |  | * |  | * |  | EPA CTM 027                                           
|                                           |  |    |  |                 | 
|H2SO4*                                     |  | *  |  | Linear pro-rata |  | * |  | * |  | Controlled Condensate, EPA Method 8A                  
|                                           |  |    |  |                 | 
|Natural Gas consumption in the Afterburner |  | *  |  | none            |  | * |  | * |  | Natural Gas Flow rate in DCS / AB Potential Heat Input



|* | Maximum single hourly lbs/hr value of noted emissions can exceed given limit by up to 20%
|- | -----------------------------------------------------------------------------------------

|** | CEMS and EPA Methods 2 & 4  these parameters can be measured using either the stack CEMS, if certified prior
to testing and mutually agreed to by Owner and Contractor in the test protocol, or an independent test companys equipment according to EPA Methods 2, 4 and 7E for NOxor 6C for SO2.
|-- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



---

Clarifications



|1. | Sampling and measurements will be continuous for parameters that have appropriate continuous measurement devices, except for necessary off-line time for calibration. Other
parameters will be sampled or measured on at least an hourly basis.
|-- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|2. | Test data, unless noted otherwise, will be the average of all valid collected data for the * hour test period, with the normal expectation that data representing at least * hours of
measurement will be available for each parameter.
|-- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Test data for CO and VOC will be the highest consecutive (rolling) 3 hour average.
| | - |  | ----------------------------------------------------------------------------------



| |  |  | Test data for particulate will be the average of three 2 hour runs.
| | - |  | -------------------------------------------------------------------



|3. | The SO2requirement
for % removal and/or lb/MMBtu compliance will be demonstrated with the coal available during the performance test. Further demonstration of the alternative % removal and/or lb/MMBtu will be a warranty issue and either level, as applicable to a given
load condition and coal sulfur level, must be vendor guaranteed.
|-- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|4. | The SO2percent
reduction will be derived from the stack CEMS mass emissions rate compared to the SDA inlet SO2mass emissions rate.
|-- | ----------------------------------------------------------------------------------------------------------------------------------



|5. | The lb/MMBtu will be derived from the stack CEMS SO2emissions rate, and heat input rate due to the burning of fuels in the afterburner, including natural gas and MHF byproduct waste gas, but excluding the sensible and latent heat content of the MHF waste gas.
|-- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|6. | For calculation of natural gas capacity factor <10%, the potential heat input to the afterburner includes the design maximum Btu content of the MHF byproduct waste gas, excluding
sensible and latent heat content.
|-- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|7. | The net electrical output for comparison with the Net Electrical Output Requirement will be based on the average of continuous power production, less Project loads with all
ancillary systems required for operation as measured by net electrical power export at the GSU 34.5 kV metering (CLECO metering). Power production performance requirements will be adjusted directly proportional to the total heat content (sensible
heat plus combustion energy) as compared to the baseline MHF off-gas as per agreed adjustment protocol to be developed during detailed design. Prior to conducting the Performance Test, Contractor shall determine if the Waste Heat Recovery
Boiler/Afterburner (WHRB/AB) require inspection by Contractor. If inspection is required, and upon such inspection, mineral or other deposits are identified within the WHRB which cannot be removed using normal operating and maintenance provisions
and which impact steam production, the following cleaning may be required in accordance with Section 6.7.1 of the Agreement: 1) acid cleaning of the water side of the WHRB to remove mineral deposits, 2) high pressure cleaning of the fire side
of the WHRB heating surfaces to remove deposits not removable using the installed sootblowers.
|-- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



---

|8. | The pebble lime consumption rate for comparison with the Lime Consumption Requirement will be directly proportional to the measured quantity (in tons) of coal feed to produce the
activated carbon as compared to the baseline at * and at * tons per day per MHF. The pebble lime consumption rate will be measured at the SDA inlet by flow and density meters. Lime feed must be sufficient to meet the SO2 performance requirements.
|-- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|9. | NOx emissions levels are dependent on the following limits in the MHF waste gas:
|-- | --------------------------------------------------------------------------------



| |  |  | Total nitrogen compounds including NO and NH3 (excluding N2) in the MHF waste gas will not exceed * lbs/hr (expressed as NH3) for the Baseline * TPD per MHF.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Carbon particles larger than 7 microns in the MHF waste gas from the cyclones cannot exceed 10% of the total carbon by weight without potential degradation in NOx
performance.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|10. | Design margin as indicated in Table C.1 and C.2 is calculated as :
|--- | ------------------------------------------------------------------

(Design Point Production Rate  Actual Production Rate)

Actual Production Rate



|11. | Activated carbon throughput and quality are dependent on the activated carbon entering the roller mills having a Blamire Grindability Number >0.85 and a maximum absorbed moisture
content of 10% by weight.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



---

Crowfoot Project

Performance Testing Requirements

Appendix C.3  Reliability Test

Purpose of Performance Test:

The Reliability Test described herein
is the full Project reliability test to demonstrate that the full Project, including the power island, the emission control system, and all material handling systems, can perform such that normal plant operation can be reliably maintained at a full
acceptance level not less than *% for a test period of * days.

Scope of Demonstration:

Plant operation will be monitored using the installed plant instrumentation and normal operational sampling. Plant staffing will be at normal levels and all operation and
maintenance will be performed by plant staff in accordance with the instructions and manuals provided by Contractor.

Normal plant operation involves
maintaining production of saleable activated carbon while operating continuously within the limits of the Environmental Permit, producing electrical power and maintaining operation of miscellaneous auxiliaries to support production, as
demonstrated by the following process parameters.

Specific Requirements (collectively, the Reliability Requirement):

ARTICLE 3 SUSTAINED PRODUCTION

The Project shall support production
from each MHF within an accepted operating range of * to * tons per day of activated carbon, to be measured as a daily total by the cooled product weigh belt feeder reporting to the plant DCS. Production from each MHF will be allowed to fall below
the * tons per day minimum for one period during the * day test, up to 24 hours in duration. If production falls below * TPD (24-hour rolling average) on any MHF for a second 24-hour period the test is failed and must be restarted by Contractor.
Total production from the combined MHFs shall be a minimum of * tons over the test period. Production above * TPD from any individual MHF will not be included in the production total. Lignite feed to each MHF will also be monitored for reference
purposes.

Time periods for which Owner-caused problems result in production of any MHF dropping below the minimum or rising above the maximum acceptable
range will be excluded from test accounting (clock on hold), to be resumed when all MHFs are returned to an acceptable operating level.



---

Electrical power generation must be maintained for a minimum of *% (* hours) of the * day (* hours) operating period, as
determined by the generator metering.

ARTICLE 4 PRODUCT QUALITY

The production measured above shall be further processed into saleable powdered activated carbon (PAC) maintaining a minimum of *% passing * mesh as determined by sieve measurement using the normal plant
sampling procedure from the roller mill discharge. * delivery into the activated carbon will be measured by the delivery line flow meters reporting to the DCS and converted to weight by DCS calculation, with the proper weight ratio of *% (+/-2%)
demonstrated by activated carbon weight calculated by the DCS from the day bin metering screw speed/volume and compared to the day bin inventory for reference. Any PAC not meeting the quality specifications will not be counted in the total activated
carbon production for the Reliability Test.

ARTICLE 5 ENVIRONMENTAL COMPLIANCE

Operation of the plant must be in accordance with the monitoring requirements of and within the limits of the environmental Permits as demonstrated by the following parameters:



| |  |  | NOx no greater than 77.3 lbs/hr as an * day rolling average, with no single hourly value exceeding 92.7 lbs/hr, as reported by the stack CEMS
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | SO2no greater than
101.2 lbs/hr as an * day rolling average, with no single hourly value exceeding 121.4 lbs/hr, as reported by the stack CEMS
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | SO2no greater than
0.2 lbs/MMBtu afterburner heat input or 92% removal and less than 1.2 lb/MMBtu as determined by measured surrogate values in accordance with approved Louisiana DEQ procedures
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | CO and VOC in compliance as determined by required minimum combustor exit temperature and oxygen level measurements reported by the DAS computer/ DCS indication
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | PM/PM10in
compliance as determined by required minimum fabric filter baghouse differential pressure measurement reported by the DAS computer/ DCS indication
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Natural gas <10 % Heat Input as an * day rolling average as determined by measured surrogate values in accordance with approved Louisiana DEQ procedures
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Other environmental parameters that are required by Permit to be specifically monitored or reported
| | - |  | ---------------------------------------------------------------------------------------------------

ARTICLE 6 MISCELLANEOUS AUXILIARIES

Continuous operation of all
necessary plant auxiliaries to support production levels for the test duration.



---

APPENDIX D

Owner Permits

Owner will be responsible for obtaining and procuring the following permits for the Project:



|                                                                                                                                           |  |                                                        
|------------------------------------------------------------------------------------------------------------------------------------------ |  | -------------------------------------------------------
|Permit/Authorization                                                                                                                       |  | Issuing Agency                                         
|                                                                                                                                           | 
|Nationwide Permit No. 39                                                                                                                   |  | U.S. Army Corps of Engineers, Vicksburg District Office
|                                                                                                                                           | 
|Water Quality Certification (related to NWP No. 39)                                                                                        |  | La. Department of Environmental Quality                
|                                                                                                                                           | 
|Review of Nationwide Permit No. 39 application                                                                                             |  | U.S. Fish & Wildlife Service                           
|                                                                                                                                           | 
|Part 70 Operating Permit No. 2420-00027-V0                                                                                                 |  | La. Department of Environmental Quality                
|                                                                                                                                           | 
|Prevention of Significant Deterioration (PSD) Permit No. PSD-LA-727                                                                        |  | La. Department of Environmental Quality                
|                                                                                                                                           | 
|Groundwater Certification                                                                                                                  |  | La. Department of Environmental Quality                
|                                                                                                                                           | 
|Notice of Intent to Discharge Storm Water pursuant to Storm Water General Permit for Industrial Activities (Multi-Sector GP No. LAR05N189) |  | La. Department of Environmental Quality                
|                                                                                                                                           | 
|Sanitary Wastewater Permit                                                                                                                 |  | LDEQ, Louisiana Department of Health & Hospitals (DHH) 
|                                                                                                                                           | 
|Modification to Nationwide Permit No. 39 (water intake)                                                                                    |  | U.S. Army Corps of Engineers, Vicksburg District Office
|                                                                                                                                           | 
|Solid Waste Generator ID Number                                                                                                            |  | La. Department of Environmental Quality                
|                                                                                                                                           | 
|Qualifying Facility Status                                                                                                                 |  | Federal Energy Regulatory Commission                   
|                                                                                                                                           | 
|Power Purchase Agreement Approval                                                                                                          |  | Louisiana Public Service Commission                    
|                                                                                                                                           | 
|Interconnection Agreement Approval                                                                                                         |  | Louisiana Public Service Commission                    

Owner will be responsible for all other permits necessary for completing the Project, excluding those permits
necessary for Contractor to conduct business at the Project Site and those contractor and construction permits which are normally and customarily required for Contractor to complete the Work of this Agreement.



---

APPENDIX E

Owner Contracts

The following contracts and agreements are Owner Contracts:



| |  |  | Multiple Hearth Furnace (MHF) Contract (Crowfoot Project) UNIT #1, dated as of September 5, 2008, by and between Red River Environmental Products, LLC, a
Delaware limited liability company and Industrial Furnace Company, Inc., a New York corporation.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Multiple Hearth Furnace (MHF) Contract (Crowfoot Project) UNIT #2, dated as of September 5, 2008, by and between Red River Environmental Products, LLC, a
Delaware limited liability company and Industrial Furnace Company, Inc., a New York corporation.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Multiple Hearth Furnace (MHF) Contract (Crowfoot Project) UNIT #3, dated as of September 5, 2008, by and between Red River Environmental Products, LLC, a
Delaware limited liability company and Industrial Furnace Company, Inc., a New York corporation.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Multiple Hearth Furnace (MHF) Contract (Crowfoot Project) UNIT #4, dated as of September 5, 2008, by and between Red River Environmental Products, LLC, a
Delaware limited liability company and Industrial Furnace Company, Inc., a New York corporation.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



---

APPENDIX F

Key Personnel

Key personnel filling the positions listed below are critical to the successful performance
of this Project. Personnel must have the appropriate education, skills, experience, licensing, certification and/or training to be considered competent for the work.

Project Manager

The Project Manager (PM)is responsible for execution of the engineering, procurement, and
construction effort to meet the requirements of the Agreement. The PM is responsible for achieving the required quality in design, control of costs, and meeting schedule requirements in a safe manner compliant with environmental requirements.
The PMs responsibilities include ensuring that the design is constructible, efficient, economic, and that Equipment and Materials are made available to the construction team as required by the Project Schedule. It is also the
responsibility of the PM to maintain effective communications with Owner throughout the life of the Project. The PM supports the development of Project Personnel, and recognizes the accomplishments of individuals and the Project team.

A full-time, qualified PM is required throughout the Project. The Project Manager or his/her authorized representative shall attend all Project
meetings with the Owner and have the authority to resolve cost, schedule, scope, and technical issues on behalf of the Contractor.

Safety Manager

At all times during construction performance, the Contractor shall have on the Project Site a competent Safety Manager, or his or her designee, who
is satisfactory to Owner and has authority to act for the Contractor. The Safety Manager must be a full-time dedicated position with no other duties or responsibilities other than safety. The Contractors Safety Manager must be an
employee of the Contractor.

Project Superintendent

TheProject Superintendentis responsible for execution of the construction effort to meet the requirements of this Agreement. The Project Superintendent is responsible for achieving the required quality in the constructed
facilities, leading the construct safe philosophy, control of costs, and compliance with schedule requirements.

At all times during performance of the
Agreement and until the Work is completed and accepted, the Contractor shall directly superintend the on-site Work, and have on the Project Site one or more competent Project Superintendent(s) who are satisfactory to Owner and have the
authority to act for the Contractor.



---

APPENDIX G

Milestone Payment Schedule



|          |  |                       |  |                 |            
|--------- |  | --------------------- |  | --------------- | -----------
|Month End |  | Milestone             |  | Milestone Value
|          |  |                      
|Sep-08    |  | Construction          |  | $               | *          
|          |  |                      
|Oct-08    |  | Construction/Issue PO |  | $               | *          
|          |  |                      
|Nov-08    |  | Construction/Issue PO |  | $               | *          
|          |  |                      
|Dec-08    |  | Construction/Issue PO |  | $               | *          
|          |  |                      
|Jan-09    |  | Construction/Issue PO |  | $               | *          
|          |  |                      
|Feb-09    |  | Construction/Issue PO |  | $               | *          
|          |  |                      
|Mar-09    |  | Construction/Issue PO |  | $               | *          
|          |  |                      
|Apr-09    |  | Construction/Issue PO |  | $               | *          
|          |  |                      
|May-09    |  | Construction/Issue PO |  | $               | *          
|          |  |                      
|Jun-09    |  | Construction/Issue PO |  | $               | *          
|          |  |                      
|Jul-09    |  | Construction          |  | $               | *          
|          |  |                      
|Aug-09    |  | Construction/Issue PO |  | $               | *          
|          |  |                      
|Sep-09    |  | Construction          |  | $               | *          
|          |  |                      
|Oct-09    |  | Construction          |  | $               | *          
|          |  |                      
|Nov-09    |  | Construction          |  | $               | *          
|          |  |                      
|Dec-09    |  | Construction          |  | $               | *          
|          |  |                      
|Jan-10    |  | Construction          |  | $               | *          
|          |  |                      
|Feb-10    |  | Construction          |  | $               | *          
|          |  |                      
|Mar-10    |  | Construction          |  | $               | *          
|          |  |                      
|Apr-10    |  | Construction          |  | $               | *          
|          |  |                      
|May-10    |  | Construction          |  | $               | *          
|          |  |                      
|Jun-10    |  | Construction          |  | $               | *          
|          |  |                      
|Jul-10    |  | Construction          |  | $               | *          
|          |  |                      
|Aug-10    |  | Construction          |  | $               | *          
|          |  |                      
|Sep-10    |  | Construction          |  | $               | *          
|          |  |                       |  |                 |            
|          |  |                      
|          |  |                       |  | $               | 184,977,275



---

APPENDIX H

Total Cost Breakdown

Contractor shall provide to Owner a cost breakdown of the aggregate amount paid by Owner to
Contractor for the Work in accordance with the table below:



|                                |  |             |  |                       |  |       |  |           |  |            |  |          
|------------------------------- |  | ----------- |  | --------------------- |  | ----- |  | --------- |  | ---------- |  | ---------
|                                |  | Engineering |  | ConstructionMaterials |  | Labor |  | Equipment |  | OtherCosts |  | AreaTotal
|                                |  |             |  |                       |  |      
|Coal Storage                    |  |             |  |                       |  |       |  |           |  |            |  |          
|                                |  |             |  |                       |  |      
|Coal Receiving / Handling       |  |             |  |                       |  |       |  |           |  |            |  |          
|                                |  |             |  |                       |  |      
|Multiple Hearth Furnaces        |  |             |  |                       |  |       |  |           |  |            |  |          
|                                |  |             |  |                       |  |      
|Product Storage                 |  |             |  |                       |  |       |  |           |  |            |  |          
|                                |  |             |  |                       |  |      
|Product Handling / Distribution |  |             |  |                       |  |       |  |           |  |            |  |          
|                                |  |             |  |                       |  |      
|Water System & Utilities        |  |             |  |                       |  |       |  |           |  |            |  |          
|                                |  |             |  |                       |  |      
|Power Island                    |  |             |  |                       |  |       |  |           |  |            |  |          
|                                |  |             |  |                       |  |      
|Emission Control                |  |             |  |                       |  |       |  |           |  |            |  |          
|                                |  |             |  |                       |  |      
|Power Distribution              |  |             |  |                       |  |       |  |           |  |            |  |          
|                                |  |             |  |                       |  |      
|Site and Buildings              |  |             |  |                       |  |       |  |           |  |            |  |          
|                                |  |             |  |                       |  |      
|Other                           |  |             |  |                       |  |       |  |           |  |            |  |          



---

Definitions

Coal Storage 

Coal Receiving / Handling 

Multiple Hearth Furnaces 

Product Storage 

Product Handling / Distribution 

Water System &
Utilities 

Power Island 

Emission
Control 

Power Distribution 

Site
and Buildings 

Other 

Engineering


Construction Materials 

Labor


Equipment 

Other Costs 

Note:The above definitions will be based on the Area System Descriptions (Area 100 thru Area 800) provided by Contractor as part of Project
Cost Estimate submitted to Owner on April 25, 2008. Definitions and descriptions will be provided and updated to include approved change orders and Scope of Work modifications. Final definitions will be provided by Contractor no later than 90
days prior to required submittal date of Appendix H to Owner.



---

APPENDIX I-1

Form of Full Notice to Proceed

(Date)

Mr. D. L. Kieta

Vice President and General Manager, Power

BE&K Construction Company, LLC

2000 International Park Drive

Birmingham, AL 35243



|RE: | Crowfoot Activated Carbon Project  Notice to Proceed
|--- | -----------------------------------------------------

| | Red River Environmental Products, LLC
| | -------------------------------------

| | Amended & Restated Engineering, Procurement and Construction Agreement
| | ----------------------------------------------------------------------

| | (Date) (the Agreement)
| | ------------------------

Dear Mr. Kieta:

In accordance with Section 2.1.2 of the referenced Agreement, this letter is your authorization to proceed with the Red River Environmental Products, LLC Crowfoot
Activated Carbon Project.

BE&K Construction Company is hereby notified to proceed immediately with Project management, engineering, procurement,
construction and related Work in accordance with the Scope of Work, Project Schedule and Construction Price specified in the Agreement.

Your
acknowledgment of this Notice to Proceed will confirm the commencement of your activities.

Acknowledged



|                                      |  |                                          
|------------------------------------- |  | -----------------------------------------
|(signature)                           |  | (signature)                              
|                                      | 
|(date)                                |  | (date)                                   
|                                      | 
|Richard Schlager                      |  | D. L. Kieta                              
|Managing Member                       |  | Vice President and General Manager, Power
|Red River Environmental Products, LLC |  | BE&K Construction Company, LLC           



---

APPENDIX I-2A

Form of Application for Payment

(monthly)

(Date)

Mr. Tony Smith

Contract Manager

ADA ES, Inc.

8100 SouthPark Way,
Suite B

Littleton, CO 80120-4525



|Subject: | Application for Payment (Fixed Component)  Crowfoot Project
|-------- | ------------------------------------------------------------

| | Red River Environmental Products, LLC
| | -------------------------------------

| | Amended & Restated Engineering, Procurement and Construction Agreement (Date)
| | -----------------------------------------------------------------------------

Dear Mr. Smith:

BE&K Construction Company (BE&K) requests the payment under this Application for Payment for
Equipment, Materials procured and/or services rendered as stated below, with the associated supporting data (enclosed).



| | 1. | [Description of all Milestones completed.]
| | -- | ------------------------------------------



| | 2. | [Sum of all prior payments in respect of the Fixed Component made by Owner to Contractor through the end of the prior month.]
| | -- | -----------------------------------------------------------------------------------------------------------------------------



| | 3. | [Amount of the Fixed Component payable to Contractor pursuant to this Application for Payment based upon the completed Milestones and the Milestone Payment Schedule.]
| | -- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | 4. | [Updated Milestone Payment Schedule reflecting payments made by Owner to Contractor, inclusive of payments pursuant to this Application for Payment.]
| | -- | -----------------------------------------------------------------------------------------------------------------------------------------------------



| | 5. | [Fixed Component amount for any agreed Change Order Work performed, stating specifically Work performed and the Change Order supporting payment.]
| | -- | -------------------------------------------------------------------------------------------------------------------------------------------------



| | 6. | [Any amount due in respect of the Fixed Component for which payment was withheld from an earlier payment and where the cause for such withholding no longer applies.]
| | -- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------

Contractor hereby certifies that Contractor has reviewed all financial and other information contained in this Application for Payment and
the same is true, correct and complete.

For questions on any of this information, please call me at
 at your convenience.

Regards,

[Project Manager]

BE&K Construction Company, LLC

(Date)



---

Form of Application for Payment

(biweekly)

(Date)

Mr. Tony Smith

Contract Manager

ADA ES, Inc.

8100 SouthPark Way, Suite B

Littleton,
CO 80120-4525



|Subject: | Application for Payment (Reimbursable Component)  Crowfoot Project
|-------- | -------------------------------------------------------------------

| | Red River Environmental Products, LLC
| | -------------------------------------

| | Amended & Restated Engineering, Procurement and Construction Agreement (Date)
| | -----------------------------------------------------------------------------

Dear Mr. Smith:

BE&K Construction Company (BE&K) requests the payment under this Application for Payment for
portions of the Reimbursable Component as stated below, with the associated supporting data (enclosed).



| | 1. | [Reasonable estimates of Work invoiced as part of the Reimbursable Component projected to be performed in the next biweekly period, including certified payroll records (verifying
pay rates) in support of such estimates.]
| | -- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | 2. | [The amount of Craft Labor performed in the previous biweekly period, including backup for the Craft Labor Hours worked, Craft Labor Hours expended to date and Craft Labor Hours
expected to be expended during the estimate period.]
| | -- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | 3. | [The amount of any other Reimbursable Component Work performed during the previous biweekly period.]
| | -- | ----------------------------------------------------------------------------------------------------



| | 4. | [Reconciliation of (a) the actual field Craft Labor performed versus the estimate therefor and (b) other Reimbursable Component Work performed versus the estimate
therefor, each reflected in the prior biweekly or other applicable invoices (to include a statement, and supporting documents, of percentage of overrun or underrun), correcting for overpayment or underpayment to the previous biweekly period,
including certified payroll records (verifying pay rates) in support thereof.]
| | -- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | 5. | [Reimbursable Component amount of any agreed Change Order Work performed, stating specifically the Work performed and the Change Order supporting payment.]
| | -- | -----------------------------------------------------------------------------------------------------------------------------------------------------------



| | 6. | [Copy of all invoices pursuant to which Contractor has paid Sales Taxes for which it seeks reimbursement.]
| | -- | ----------------------------------------------------------------------------------------------------------



| | 7. | [Any other amount payable with respect to the Reimbursable Component with supporting documentation which reasonably demonstrates the cost of such Work and identifies the provisions
in the Agreement which designates such cost(s) as part of the Reimbursable Component and otherwise is required to verify and justify payments of such cost(s) as part of the Reimbursable Component.]
| | -- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | 8. | [All Craft Labor Hours resulting from error, negligence, defects or deficiencies in engineering in the performance of the Work (beyond that which is normal re-work activity
customary in the industry in accordance with Prudent Industry Practices), which costs shall not be part of the Reimbursable Component.]
| | -- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



---

Contractor hereby certifies that Contractor has reviewed all financial and other information contained in this
Application for Payment and the same is true, correct and complete.

For questions on any of this information, please call me at
 at your convenience.

Regards,

[Project Manager]

BE&K Construction Company, LLC

(Date)



---

APPENDIX I-2B

[RESERVED]



---

APPENDIX I-3

Form of Certificate

CERTIFICATE
OFCOMPLETION

Date:



|1. | Owner has delivered this form to Contractors duly authorized representative on the above date in accordance with
Section  1/ of the Agreement. Capitalized terms used, but not otherwise defined, herein have the meanings set forth in that certain Amended and
Restated Engineering, Procurement and Construction Agreement, dated as of September 8, 2008 (the Agreement), by and between Red River Environmental Products, LLC, a Delaware limited liability company, as owner
(Owner), and BE&K Construction Company, LLC; a Delaware limited liability company, as contractor (Contractor).
|-- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|2. | Owner certifies and represents that (i) it has had the opportunity to inspect the Project and/or cause the Project to be inspected by the Owner Engineer and/or Owner Agents or
other designees, (ii) the requirements set forth in Section  2/ the Agreement with respect to the achievement of
 Completion have been fully performed and completed, and (iii) Owner hereby accepts Contractors Notice of
 Completion.
|-- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|3. | Owner certifies that this Certificate of  Completion
is provided within ten (10) Business Days of Owners receipt of the Notice of  Completion provided by Contractor
to Owner on .
|-- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|4. | The person signing below is authorized to submit this form to Contractor for and on behalf of Owner.
|-- | ----------------------------------------------------------------------------------------------------



RED RIVER ENVIRONMENTAL PRODUCTS, LLCBy:Name:Title:






|1/ | For Certificate of Phase I Mechanical Completion, Section 6.1.3.; for Certificate of Mechanical Completion, Section 6.2.3; for Certificate of Phase I Substantial
Completion, Section 6.4.3; for Certificate of Substantial Completion, Section 6.7.4; for Certificate of Final Completion; Section 6.8.3.
|-- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|2/ | For Phase I Mechanical Completion, Section 6.1.1; for Mechanical Completion, Section 6.2.1; for Phase I Substantial Completion, Section 6.4.1; for Substantial
Completion, Section 6.7.2; for Final Completion, Section 6.8.1.
|-- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



---

APPENDIX I-4

Form of Notice of Phase I Mechanical Completion

(Date)

Mr. Tony Smith

Contract Manager

ADA ES, Inc.

8100 SouthPark Way, Suite B

Littleton,
CO 80120-4525



|Subject: | Notice of Phase I Mechanical Completion  Crowfoot Activated Carbon Project
|-------- | ---------------------------------------------------------------------------

| | Red River Environmental Products, LLC
| | -------------------------------------

| | Amended & Restated Engineering, Procurement and Construction Agreement (Date)
| | -----------------------------------------------------------------------------

Dear Mr. Smith:

BE&K Construction Company (BE&K) is pleased to submit this Notice of Phase I Mechanical
Completion for the Crowfoot Activated Carbon Project.

This notice certifies that BE&K has satisfied all the conditions for Phase I Mechanical
Completion pursuant to Section 6.1.1 of the referenced Agreement. The enclosed documents provide evidence of this status of completion for your consideration.

Upon Red River Environmental Products, LLC agreement that Phase 1 Mechanical Completion has been achieved, Red River Environmental Products, LLC shall issue a Certificate to show the date of Phase I Mechanical Completion.

Regards



|                              
|------------------------------
|(signature)                   
|                              
|(date)                        
|                              
|[Project Manager]             
|BE&K Construction Company, LLC



---

Form of Notice of Mechanical Completion

(Date)

Mr. Tony Smith

Contract Manager

ADA ES, Inc.

8100 SouthPark Way,
Suite B

Littleton, CO 80120-4525



|Subject: | Notice of Mechanical Completion  Crowfoot Activated Carbon Project
|-------- | -------------------------------------------------------------------

| | Red River Environmental Products, LLC
| | -------------------------------------

| | Amended & Restated Engineering, Procurement and Construction Agreement (Date)
| | -----------------------------------------------------------------------------

Dear Mr. Smith:

BE&K Construction Company (BE&K) is pleased to submit this Notice of Mechanical Completion for
the Crowfoot Activated Carbon Project.

This notice certifies that BE&K has satisfied all the conditions for Mechanical Completion pursuant to
Section 6.2.1 of the referenced Agreement. The enclosed documents provide evidence of this status of completion for your consideration.

Upon Red
River Environmental Products, LLC agreement that Mechanical Completion has been achieved, Red River Environmental Products, LLC shall issue a Certificate to show the date of Mechanical Completion.

Regards



|                              
|------------------------------
|(signature)                   
|                              
|(date)                        
|[Project Manager]             
|BE&K Construction Company, LLC



---

Form of Notice of Phase I Substantial Completion

(Date)

Mr. Tony Smith

Contract Manager

ADA ES, Inc.

8100 SouthPark Way, Suite B

Littleton, CO 80120-4525



|Subject: | Notice of Phase I Substantial Completion  Crowfoot Activated Carbon Project
|-------- | ----------------------------------------------------------------------------

| | Red River Environmental Products, LLC
| | -------------------------------------

| | Amended & Restated Engineering, Procurement and Construction Agreement (Date)
| | -----------------------------------------------------------------------------

Dear Mr. Smith:

BE&K Construction Company (BE&K) is pleased to submit this Notice of Phase I Substantial
Completion for the Crowfoot Activated Carbon Project.

This notice certifies that BE&K has satisfied all the conditions for Phase I Substantial
Completion pursuant to Section 6.4.1 of the referenced Agreement. The enclosed documents provide evidence of this status of completion for your consideration.

Upon Red River Environmental Products, LLC agreement that Phase I Substantial Completion has been achieved, Red River Environmental Products, LLC shall issue a Certificate to show the date of Phase I Substantial Completion.

Regards



|                              
|------------------------------
|(signature)                   
|                              
|(date)                        
|[Project Manager]             
|BE&K Construction Company, LLC



---

Form of Notice of Substantial Completion

(Date)

Mr. Tony Smith

Contract Manager

ADA ES, Inc.

8100 SouthPark Way,
Suite B

Littleton, CO 80120-4525



|Subject: | Notice of Substantial Completion  Crowfoot Activated Carbon Project
|-------- | --------------------------------------------------------------------

| | Red River Environmental Products, LLC
| | -------------------------------------

| | Amended & Restated Engineering, Procurement and Construction Agreement (Date)
| | -----------------------------------------------------------------------------

Dear Mr. Smith:

BE&K Construction Company (BE&K) is pleased to submit this Notice of Substantial Completion
for the Crowfoot Activated Carbon Project.

This notice certifies that BE&K has satisfied all the conditions for Substantial Completion pursuant to
Section 6.7.2 of the referenced Agreement. The enclosed documents provide evidence of this status of completion for your consideration.

Upon Red
River Environmental Products, LLC agreement that Substantial Completion has been achieved, Red River Environmental Products, LLC shall issue a Certificate to show the date of Substantial Completion.

Regards



|                              
|------------------------------
|(signature)                   
|                              
|(date)                        
|[Project Manager]             
|BE&K Construction Company, LLC



---

Form of Notice of Final Completion

(Date)

Mr. Tony Smith

Contract Manager

ADA ES, Inc.

8100 SouthPark Way,
Suite B

Littleton, CO 80120-4525



|Subject: | Notice of Final Completion  Crowfoot Activated Carbon Project
|-------- | --------------------------------------------------------------

| | Red River Environmental Products, LLC
| | -------------------------------------

| | Amended & Restated Engineering, Procurement and Construction Agreement (Date)
| | -----------------------------------------------------------------------------

Dear Mr. Smith:

BE&K Construction Company (BE&K) is pleased to submit this Notice of Final Completion for the
Crowfoot Activated Carbon Project.

This notice certifies that BE&K has satisfied all the conditions for Final Completion pursuant to
Section 6.8.1 of the Agreement. The enclosed documents provide evidence of this status of completion for your consideration.

Upon Red River
Environmental Products, LLC agreement that Final Completion has been achieved, Red River Environmental Products, LLC shall issue a Certificate to show the date of Final Completion.

BE&K appreciates the opportunity to work with you on this Project and looks forward to a long-term, mutually-beneficial relationship with Red River Environmental Products, LLC and ADA-ES, Inc.

Regards



|                              
|------------------------------
|(signature)                   
|                              
|(date)                        
|[Project Manager]             
|BE&K Construction Company, LLC



---

APPENDIX I-5

Form of Change Order

CHANGE ORDER

Reference is made to the Amended and Restated Engineering, Procurement and Construction Agreement dated as of
, 2008 (the Agreement) by and between Red River Environmental Products, LLC, a Delaware limited
liability company, as owner (Owner), and BE&K Construction Company, LLC, a Delaware limited liability company, as contractor (Contractor). Capitalized terms used but not defined herein shall have the
meanings set forth in the Agreement. In accordance with Article 10 of the Agreement, each of Contractor and Owner agree to the following changes to the Agreement:



| | 1) | [Description of agreed Change Order under the Agreement, including detailed supporting information];
| | -- | ----------------------------------------------------------------------------------------------------



| | 2) | [Description of agreed change to the Fixed Component, Milestone Payment Schedule, Project Schedule (including the Target Contract Dates and Required Contract Dates), Craft Labor
Hour Target, Reimbursable Component, Target Total Work Cost and Performance Requirements];
| | -- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | 3) | [Description of impact of agreed change to the Fixed Component, Milestone Payment Schedule, Project Schedule (including the Target Contract Dates and Required Contract Dates), Craft
Labor Hour Target, Reimbursable Component, Target Total Work Cost, Performance Requirements or otherwise on the quality, function or intent of the Work or any of the other obligations or liabilities of the Parties under the Agreement].
| | -- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|                                      |  |                               
|------------------------------------- |  | ------------------------------
|Agreed pursuant to the Agreement by: 
|                                      |  |                               
|Red River Environmental Products, LLC |  | BE&K Construction Company, LLC
|                                      | 
|By:                                   |  | By:                           
|                                      | 
|Name:                                 |  | Name:                         
|                                      | 
|Title:                                |  | Title:                        
|                                      | 
|Date:                                 |  | Date:                         



---

APPENDIX I-6

FORM OF LETTER OF CREDIT

BE&K Construction Company, LLC

2000 International Park Drive

Birmingham, AL 35243

Attention: General Counsel

Re: Irrevocable Standby Letter of Credit No.

Ladies and Gentlemen:

We hereby establish in your favor this Irrevocable Standby Letter of Credit No.  (this
Letter of Credit) for the benefit of BE&K Construction Company, LLC, a Delaware limited liability company (Contractor) at the request of Energy Capital Partners I, L.P., on behalf of Red River Environmental Products, LLC
(Owner), effective immediately and expiring on the date set forth in numbered paragraph 5 hereof.

This Letter of Credit, we are informed, is
issued pursuant to the terms of the Amended and Restated Engineering, Procurement and Construction Agreement, dated as of September 8, 2008, between Owner and Contractor, as the same may be amended (the Agreement).

1. Stated Amount. The maximum amount of funds available under this Letter of Credit shall be U.S. $21,350,000 (twenty-one million three hundred fifty thousand
United States Dollars) (the Stated Amount).

The maximum amount available to be drawn from time to time under this Letter of Credit is as
follows (the Maximum Amount):



|                                                                |  |                         
|--------------------------------------------------------------- |  | ------------------------
|Period                                                          |  | Maximum Amount Available
|Date of Issuance of this Letter of Credit to September 30, 2008 |  | $6,530,000.00           
|October 1, 2008 to October 30, 2008                             |  | $15,710,000.00          
|November 1, 2008 to November 30, 2008                           |  | $19,280,000.00          
|December 1, 2008 to December 31, 2009                           |  | $16,040,000.00          
|January 1, 2009 to January 31, 2009                             |  | $17,670,000.00          
|February 1, 2009 and thereafter                                 |  | $21,350,000.00          



---

2. Drawings. A drawing hereunder may be made by you on any
Business Day on or prior to the date this Letter of Credit expires by delivering to Natixis, New York Branch, at any time during its business hours on such Business Day, at 1251 Avenue of the Americas, 34thFloor, New York, New York 10020 or at such other address as may be designated by written notice delivered to you as contemplated by numbered paragraph 8 hereof, this Letter of
Credit together with (i) a Draw Certificate executed by an authorized person in the form of Attachment A hereto (the Draw Certificate), appropriately completed and purportedly signed by your authorized officer and
(ii) your draft in the form of Attachment B hereto (the Draft), appropriately completed and purportedly signed by your authorized officer. Partial drawings and multiple presentations may be made under this Letter of Credit.
Draw Certificates and Drafts under this Letter of Credit may be presented by you by means of original documents sent by overnight delivery or courier to Natixis, New York Branch, at its address set forth above Attention: Standby Letter of Credit
Unit (or at such other address as may be designated by written notice delivered to you as contemplated by numbered paragraph 8 hereof).

3. Time and
Method for Payment. We hereby agree to honor a drawing hereunder made in compliance with this Letter of Credit by transferring in immediately available funds the amount specified in the Draft delivered to us in connection with such drawing to
such account at such bank in the United States as you may specify in your Draw Certificate at the opening of business on the second Business Day next succeeding the date of presentation of the Draw Certificate. In clarification, we agree to honor
the Draw Certificate upon receipt thereof, without regard to the truth or falsity of the assertions made therein.

4. Non-Conforming Demands. If a
demand for payment made by you hereunder does not, in any instance, conform to the terms and conditions of this Letter of Credit, we shall give you prompt notice that the demand for payment was not effected in accordance with the terms and
conditions of this Letter of Credit, stating the reasons therefor and that we will upon your instructions hold any documents at your disposal or return the same to you. Upon being notified that the demand for payment was not affected in conformity
with this Letter of Credit, you may attempt to correct any such non-conforming demand.

5. Expiration. This Letter of Credit shall automatically
expire at the close of business on the earlier of (a) Financial Closing, as such term is defined in the Agreement, (b) July 31, 2009.

6.
Business Day. As used herein, Business Day shall mean any day on which commercial banks are not authorized or required to close in the State of New York.



---

7. Governing Law. Except as far as otherwise expressly stated herein, this Letter of Credit is subject to the
International Standby Practices (ISP98), except for Rule 3:14(a), International Chamber of Commerce Publication No. 590. As to matters not addressed by the ISP98, this Letter of Credit shall be governed by and construed in
accordance with the laws of the State of New York and applicable U.S. federal law.

8. Notices. All communications to you in respect of this Letter
of Credit shall be in writing and shall be delivered to the address shown for you herein before or such other address as may from time to time be designated by you in a written notice to us. All documents to be presented to us hereunder and all
other communications to us in respect of this Letter of Credit, which other communications shall be in writing, shall be delivered to the address for us indicated on the signature page hereof, or such other address as may from time to time be
designated by us in a written notice to you.

9. Irrevocability. This Letter of Credit is irrevocable.

10. Transferability. We shall not authorize any transfer of this Letter of Credit until a transfer certificate, substantially in the form of Attachment C
hereto, is completed to our satisfaction and received by us. Such transfer shall not be effective until our normal transfer charges have been paid to us. This Letter of Credit may not be transferred to any person with whom U.S. persons are
prohibited from doing business under U.S. Foreign Asset Control Regulations or other applicable U.S. laws and regulations.

11. Complete Agreement.
This Letter of Credit sets forth in full our undertaking, and such undertaking shall not in any way be modified, amended, amplified or limited by reference to any document, instrument or agreement referred to herein, except for the ISP-98 and
Attachments A, B and C hereto and the notices referred to herein and any such reference shall not be deemed to incorporate herein by reference any document, instrument or agreement except as set forth above.

SINCERELY,

NATIXIS, NEW YORK BRANCH

Address:

1251 Avenue
of the Americas, 34thFloor

New York, New York 10020



---

ATTACHMENT A

FORM OF DRAW CERTIFICATE

The undersigned hereby certifies to Natixis, New York Branch (Issuer), with
reference to Irrevocable Letter of Credit No.  (the Letter of Credit) issued by Issuer in favor of the
undersigned (Beneficiary) (capitalized terms used herein and not defined herein shall have the respective meanings set forth in the Letter of Credit), as follows:



|(1) | The undersigned is the  of Beneficiary and is duly
authorized by Beneficiary to execute and deliver this Certificate on behalf of Beneficiary.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------

and



|(2) | Beneficiary hereby makes demand against the Letter of Credit by Beneficiarys presentation of the draft accompanying this Certificate, for payment of (U.S.$
 ), such amount, when aggregated together with any amount not drawn down, is not in excess of the Stated Amount (as in
effect on the date hereof) or the current Maximum Amount (as in effect on the date hereof).
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

and



|(3) | Financial Closing, as such term is defined in the Agreement, has not occurred.
|--- | ------------------------------------------------------------------------------

and



|(4) | Beneficiary is entitled to draw the amount set forth in paragraph 2 hereof because:
|--- | -----------------------------------------------------------------------------------

[Check applicable provision(s)]



| | [] | Owner has failed to make one or more undisputed payments to Beneficiary, which payments are due and payable pursuant to the Agreement and are not in excess of the amount set forth
in paragraph 2 hereof.
| | -- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | [] | The stated expiration date set forth in the Letter of Credit will occur in less than ten (10) Business Days and Owner has not caused the Letter of Credit to be extended or
substituted on the same terms as the Letter of Credit being extended or replaced.
| | -- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



---

| | [] | The rating of the outstanding unsecured indebtedness of Issuer has fallen below a rating of A-, as determined by Standard and Poors Ratings Group, Inc. (S&P),
or a rating of A3, as determined by Moodys Investor Services, Inc. (Moodys), and Owner has failed, within ten (10) Business Days after receipt of written notice thereof by Owner to replace such Letter of Credit with
another Letter of Credit issued by a financial institution rated at least A-1 by S&P or at least A3 by Moodys on the same terms as the Letter of Credit being replaced.
| | -- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | [] | Financial Closing, as defined under the Agreement, has not occurred and a replacement or amended letter of credit has not been delivered to Beneficiary in substitution for the
letter of credit in place, in each case, by July 21, 2009.
| | -- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(5) | You are hereby directed to make payment of the requested drawing to: (insert wire instructions)
|--- | -----------------------------------------------------------------------------------------------



|                              
|------------------------------
|BE&K Construction Company, LLC
|                              
|By:                           
|                              
|Title:                        
|                              
|Date:                         
|                              
|Address:                      
|2000 International Park Drive 
|Birmingham, Alabama 35243     



---

ATTACHMENT B

DRAWING UNDER IRREVOCABLE LETTER OF CREDIT NO. --------------

Date:

ON: The second Business Day immediately succeeding the date of presentation

PAY TO: BE&K Construction Company, LLC

$
 United States Dollar

FOR
VALUE RECEIVED AND CHARGE TO THE ACCOUNT OF LETTER OF CREDIT NO. .



|                              
|------------------------------
|BE&K Construction Company, LLC
|                              
|By:                           
|                              
|Title:                        
|                              
|Date:                         



---

ATTACHMENT C

TRANSFER CERTIFICATE

Irrevocable Letter of Credit No.

The undersigned Beneficiary
(Contractor) hereby certifies to Natixis, New York Branch (Issuer), with reference to Irrevocable Standby Letter of Credit No.
(the Letter of Credit; capitalized terms used herein and not defined herein shall have the respective meanings set forth in the Letter
of Credit), that for value received Contractor hereby irrevocably transfers to (the Transferee) all rights of the undersigned under
the Letter of Credit, including all rights of the undersigned to draw under the Letter of Credit and to execute and deliver drafts and draw certificates with respect hereto.

Contractor hereby certifies that the Transferee has agreed in writing for Owners benefit to be bound by the provisions set forth herein.

By this transfer, all rights of Contractor under the Letter of Credit are transferred to Transferee and Transferee shall have sole rights with respect to the Letter of Credit relating to any amendments thereof and any
notices thereunder; and all references to Beneficiary or Contractor in any drawing certificate in the form of Attachment A shall be deemed to mean the Transferee. All amendments are to be advised directly to the
Transferee without necessity of any consent of or notice to the undersigned. Simultaneous with delivery of this notice to Issuer, a copy of this notice is being transmitted to Transferee.

The Letter of Credit is returned herewith and Issuer is requested to endorse the transfer on the reverse thereof and forward it with your customary notice of transfer
directly to the Transferee at the following address:

We understand that the Transfer charge is
 of % on the amount being transferred (minimum $) and in
addition thereto we agree to pay to you on demand any expenses that may be incurred by you in connection with this transfer.

[    ] We
enclose our check for $  to cover your charges, payable to . (Note: Payment of charges must
be in the form of a certified check if not drawn on )

BE&K Construction
Company, LLC

(or its permitted transferee in interest)

By:

Title:



---

Date:

SIGNATURE GUARANTEED

The First Beneficiarys
signature(s) with

title(s) conforms with that on file

with us
and such is/are authorized

for the execution of this instrument.



|                           
|---------------------------
|                           
|(Name of Bank)             
|                           
|                           
|(Bank Address)             
|                           
|                           
|(City, State, Zip Code)    
|                           
|                           
|(Telephone Number)         
|                           
|                           
|(Authorized Name and Title)
|                           
|                           
|(Authorized Signature)     



---

APPENDIX I-7

Owner Guaranty

GUARANTY

This Owner Guaranty (this Guaranty) is made by ADA-ES, Inc., a Colorado corporation (the Guarantor), in
favor of BE&K Construction Company, LLC (the Beneficiary) in consideration of the Beneficiary entering into that certain Amended and Restated Engineering, Procurement and Construction Agreement, dated as of September 8,
2008 (the Agreement), by and between the Beneficiary and Red River Environmental Products, LLC, a Delaware limited liability company (the Counterparty). Capitalized terms used and not defined herein shall have
the respective meanings set forth in the Agreement, as amended from time to time.



|1. | Guaranty: For valuable and separate consideration, the receipt of which is hereby acknowledged by the Guarantor, the Guarantor, as primary obligor and not as surety, does
hereby unconditionally and absolutely guarantee to the Beneficiary in accordance with the provisions of this Guaranty, the prompt, full and faithful payment when due (whether at maturity, upon a default, upon resolution of a dispute, by acceleration
or otherwise under the Agreement) by the Counterparty to the Beneficiary of all amounts due to the Beneficiary under the Agreement created, incurred or arising from the Effective Date up to, but not including, the date of Financial Closing, as such
date and term are defined in the Agreement (the Guaranteed Obligations) for so long as the Guaranteed Obligations remain in effect under and pursuant to the Agreement. The Guarantors obligations and liability under this
Guaranty shall be limited to, and fully satisfied upon the payment of, amounts due under and pursuant to the obligations of the Counterparty under the Agreement, and the Guarantor shall have no obligation to perform under the Agreement with regard
to performance other than the provisions regarding payment and recourse for non-payment of the Guaranteed Obligations.
|-- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|2. | Guaranty Absolute: The Guarantor guarantees that the Guaranteed Obligations will be paid in full and complete accordance with the terms of the Agreement,
regardless of any law, regulation or order now or hereafter in effect in any jurisdiction affecting any of such terms or the rights of the Beneficiary with respect thereto. The obligations of the Guarantor under this Guaranty are independent of but
related to the Counterpartys obligations under the Agreement, and a separate action or actions may be brought and prosecuted against the Guarantor to enforce this Guaranty, irrespective of whether any action or arbitration is brought against
the Counterparty or whether the Counterparty is joined in any such action or arbitration or whether the Counterparty is the subject of insolvency, bankruptcy, or reorganization proceedings. The liability of the Guarantor under this
|-- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



---

| | Guaranty shall be irrevocable, absolute and unconditional irrespective of, and the Guarantor hereby irrevocably waives any defenses it may now or hereafter
have in any way relating to, any or all of the following:
| | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

(a) any lack of validity or enforceability of the Agreement;

(b) any change in the time, manner or place of payment of, or in any other term of, all or any of the Guaranteed Obligations under the
Agreement, any modification, extension or waiver of any of the terms of the Agreement, or any other amendment or waiver of or any consent to departure from any term of the Agreement, all or any of which shall be binding on the Guarantor;

(c) any taking, exchange, release or non-perfection or the taking or failure to take any other action with respect to any collateral, or any taking,
release or amendment or waiver of or consent to departure from any other guaranty, for all or any of the Guaranteed Obligations;

(d) any
requirement that the Beneficiary proceed against the Counterparty, any other person or entity, any collateral or any manner of application of any collateral, or proceeds thereof, to all or any of the Guaranteed Obligations, or any manner of sale or
other disposition of any collateral for all or any of the Guaranteed Obligations;

(e) any change, restructuring or termination of the
company structure or existence of the Counterparty or any of its subsidiaries;

(f) any lack or failure of notice or any failure of the
Beneficiary to disclose to the Counterparty or the Guarantor any information relating to the financial condition, operations, properties or prospects of the Counterparty or the Guarantor, or relating to the Agreement, as the case may be, now or in
the future known to the Beneficiary (the Guarantor waiving any duty on the part of the Beneficiary to disclose such information);

(g) any
existence of or reliance on any representation by the Beneficiary that might otherwise constitute a defense available to, or a discharge of, the Guarantor or any other guarantor or surety; and

(h) any permitted assignment of the Agreement.

Notwithstanding any provision to the contrary contained herein, the Guarantors liability for the Guaranteed Obligations hereunder shall be and is specifically limited to payments required to be made under the Agreement (even if such
payments are deemed to be damages), and in no event shall the Guarantor be subject hereunder to consequential, exemplary, loss of profits, punitive, tort, or any other damages (other than those arising out of the Agreement), costs, or
attorneys fees (except as provided herein including, without limitation, in Section 5 hereof).



---

This Guaranty shall continue to be effective or be reinstated, as the case may be, if at any time any
payment of any of the Guaranteed Obligations is rescinded or must otherwise be returned by the Beneficiary or any other person upon the insolvency, bankruptcy or reorganization of the Counterparty or the Guarantor or otherwise, all as though such
payments had not been made. The obligations of the Guarantor under this Guaranty shall at all times rank at least pari passu in right of payment with all other unsecured and unsubordinated indebtedness (actual or contingent) of the Guarantor,
except as may be required by law. This Guaranty shall continue to be effective if the Counterparty merges or consolidates with or into another entity, loses its separate legal identity or ceases to exist.

Subject to the Section 1 hereof, this Guaranty is a continuing guaranty of the payment (and not of collection) by the Counterparty of its obligations
under the Agreement. In no event shall the Guarantors liability to the Beneficiary exceed the Counterpartys liability under the Agreement, such liability to be determined without regard to the insolvency, bankruptcy or reorganization of
the Counterparty.



|3. | Term and Termination: This Guaranty shall continue in full force and effect until the earlier of (i) Financial Closing or (ii) satisfaction of all obligations of
the Counterparty under the Agreement arising from the Effective Date up to, but not including, the date of Financial Closing; provided, however, upon termination hereof, the Guarantor agrees that (a) the obligations and
liabilities hereunder shall continue in full force and effect with respect to any Guaranteed Obligations to the extent then subject to pending claims identified in writing by the Beneficiary to the Guarantor or the Counterparty and existing on the
termination date, whether such Guaranteed Obligations with respect to such pending claims become due prior to or after the termination date and (b) this Guaranty, and Guarantors obligations and liabilities hereunder, shall be reinstated
in accordance with Section 2 hereof in the event any payment hereunder is rescinded or must be set aside in which case this Guaranty and such obligations and liabilities shall continue until indefeasibly paid in full.
|-- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|4. | Waivers and Acknowledgments: The Guarantor hereby waives presentment, protest, acceleration, dishonor, promptness, diligence, filing of claims with a court in the event of
insolvency or bankruptcy of the Counterparty, notice of acceptance of this Guaranty and any other notice with respect to any of the Guaranteed Obligations and this Guaranty and any requirement that the Beneficiary protect, secure, perfect or insure
any lien or any property subject thereto or exhaust any right or take any action against the Counterparty or any other Person or entity, or any collateral. The Guarantor hereby waives any right to revoke this Guaranty.
|-- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



---

Except as to applicable statutes of limitation, no delay of the Beneficiary in the exercise of, or
failure to exercise, any rights hereunder shall operate as a waiver of such rights, a waiver of any other rights, or a release of the Guarantor from any obligations hereunder, nor shall any single or partial exercise by the Beneficiary of any right,
remedy or power hereunder preclude any other or future exercise of any right, remedy or power. Each and every right, remedy and power hereby granted to the Beneficiary or allowed it by law or other agreement shall be cumulative and not exclusive of
any other, and may be exercised by the Beneficiary from time to time.



|5. | Expenses: Notwithstanding (and in addition to) the limit on the Guarantors liability hereunder set forth in Section 1, Guarantor agrees to pay on demand any and
all out-of-pocket costs, including reasonable legal fees and expenses, and other expenses incurred by the Beneficiary in successfully enforcing the Guarantors payment obligations under this Guaranty; provided, however, that the
Guarantor shall not be liable for any expenses of the Beneficiary if no payment under this Guaranty is due.
|-- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|6. | Subrogation: The Guarantor will not exercise any right that it may now or hereafter acquire against the Counterparty that arises from the existence, payment,
performance or enforcement of the Guarantors payment obligations under this Guaranty, including, without limitation, any right of subrogation, reimbursement, exoneration, contribution or indemnification and any right to participate in any
claim or remedy of the Beneficiary against the Counterparty or any collateral, whether or not such claim, remedy or right arises in equity or under contract, statute or common law, including, without limitation, the right to take or receive from the
Counterparty, directly or indirectly, in cash or other property or by setoff or in any other manner, payment or security on account of such claim, remedy or right, unless and until all of the obligations of the Counterparty under the Agreement and
all other amounts due under this Guaranty shall have been paid in full in cash (and not subject to disgorgement in bankruptcy or otherwise). If any amount shall be paid to the Guarantor in violation of the preceding sentence at any time prior to the
later of the payment in full in cash of the Guaranteed Obligations and all other amounts due under this Guaranty, the Guarantor shall hold such amount as agent for the benefit of the Beneficiary, which amount shall forthwith be paid to the
Beneficiary to be credited and applied to the Guaranteed Obligations and all other amounts due under this Guaranty, whether matured or unmatured, in accordance with the terms of the Agreement, or to be held as collateral for any Guaranteed
Obligations or other amounts due under this Guaranty thereafter arising. If (a) the Guarantor shall make payment to the Beneficiary of all or
|-- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



---

| | any part of the Guaranteed Obligations and (b) all of the Guaranteed Obligations and all other amounts payable under this Guaranty shall be paid in full
in cash, the Beneficiary will, at the Guarantors request and expense execute and deliver to the Guarantor appropriate documents, without recourse and without representation or warranty by the Beneficiary, assigning, but only to the extent of
the amounts so paid, all of the Beneficiarys rights and remedies under the Agreement, to seek and receive payment under the Agreement. In the event the Guarantor pays part or all of the Counterpartys payment obligations, the Guarantor
shall be entitled to the Counterpartys rights and benefits under the Agreement and shall be subrogated to the Counterpartys rights with respect to such of the Counterpartys obligations so paid by the Guarantor.
| | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|7. | Reservation of Defenses; Disputes Under the Agreement:
|-- | ------------------------------------------------------

(a) In furtherance of the provision in Section 1 hereof that the Guarantor is a primary obligor and not a surety, the Guarantor agrees that it will remain bound upon this Guaranty notwithstanding any defenses which, pursuant to the
laws of suretyship, would relieve a guarantor of its obligations under a guaranty. Notwithstanding anything to the contrary in this Guaranty, the Guarantor does reserve the right to assert defenses which the Counterparty may have to payment of any
Guaranteed Obligation other than defenses arising from the bankruptcy or insolvency of the Counterparty and other defenses expressly waived in this Guaranty; provided, however, if a defense has been asserted by the Counterparty with
respect to any particular demand for payment by the Beneficiary under the Agreement and, as a result of such assertion, a dispute arose between the Counterparty and the Beneficiary under the Agreement which has been resolved in accordance with the
dispute resolution provisions under the Agreement, then the Guarantor shall not have the right to assert the same defense with respect to a demand for payment under this Guaranty of the amount that had been the subject of such resolved dispute.

(b) In the event that any issue, matter or dispute arises which is resolved in accordance with the dispute resolution provisions under the
Agreement, such issue, matter or dispute shall be deemed to have been conclusively determined for the purpose of this Guaranty and neither party to this Guaranty will thereafter take any steps to argue that such issue, matter or dispute should be
resolved under this Guaranty in any different manner from the resolution under the Agreement and the parties waive any right to do so.



|8. | Notices: All demands, notices and other communications provided for hereunder shall, unless otherwise specifically provided herein, (a) be in writing
addressed to the party receiving the notice at the address set forth below or at such other address as may
|-- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



---

| | be designated by written notice, from time to time, to the other party, and (b) be effective upon receipt, when mailed by U.S. mail, registered or
certified, return receipt requested, postage prepaid, or personally delivered, or sent by overnight messenger with delivery confirmed. Notices shall be sent to the following addresses:
| | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

If to the Guarantor:

ADA-ES, Inc.

8100 SouthPark Way, Suite B

Littleton, CO 80120-4525

Attn: Richard Schlager

Title: Vice President, Administration

Phone: 303-339-8855

With a copy (which shall not constitute notice) to

ADA-ES, Inc.

8100 SouthPark Way, Suite B

Littleton, CO 80120-4525

Attn: Tony Smith

Title: Contract Manager

Phone: 303-962-1939

If to the Beneficiary:

BE&K Construction Company, LLC

2000 International Park Drive

Birmingham, AL 35243

Attn: Ray Kosak

Title: Project Manager

Phone:
205-972-6671



|9. | Demand and Payment: Any demand by the Beneficiary for payment hereunder shall be in writing, signed by a duly authorized officer of the Beneficiary and
delivered to the Guarantor pursuant to Section 8 hereof, and shall (a) reference this Guaranty, (b) specifically identify the Counterparty and the Beneficiary, the Guaranteed Obligations to be paid and the amount of such Guaranteed
Obligations, and (c) set forth payment instructions. There are no other requirements of notice, presentment or demand. The Guarantor shall pay, or cause to be paid to the Beneficiary in US dollars, such Guaranteed Obligations within five
|-- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



---

| | (5) Business Days of receipt of such demand. Payment made under this Guaranty will be made without setoff or reduction for any amounts that are or may
be owed by the Beneficiary to the Guarantor as a result of an agreement or understanding between the Guarantor and the Beneficiary unrelated to the subject matter of this Guaranty. Late payments hereunder are subject to interest at a per annum rate
of interest equal to the Prime Rate (as published from time to time in the Money Rates table of The Wall Street Journal) plus two (2) percent.
| | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|10. | Material Adverse Change:In the event that the Guarantors long-term creditworthiness materially deteriorates relative to its creditworthiness as of the date hereof as
determined using commercially reasonable standards, the Beneficiary shall notify the Guarantor of same and the representatives of each Party shall meet within ten (10) days to review Guarantors financial condition and provide suggestions
for the amount of payment assurance that the Beneficiary shall reasonably require to be delivered to the Beneficiary to secure Guarantors obligations hereunder based on such decline in Guarantors financial condition. Such additional
payment assurance shall take one of the following conventions at the sole discretion of the Guarantor: (a) a guarantee from a Guarantor affiliate in form, substance and amount mutually acceptable to the Parties; (b) a letter of credit
in form, substance and amount and from a financial institution that is mutually acceptable to the Parties; or (c) an irrevocable conditional bond in form, substance and amount and issued from an insurance company or financial institution that
is mutually acceptable to the Parties. The Guarantor shall provide such additional payment assurance within ten (10) Business Days of the meeting.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|11. | Representations and Warranties of the Guarantor: The Guarantor represents and warrants that:
|--- | --------------------------------------------------------------------------------------------

(a) it is a corporation duly incorporated and validly existing under the laws of the State of Colorado and has the corporate power and authority to
execute, deliver and carry out the terms and provisions of this Guaranty;

(b) neither the execution and delivery by it of this Guaranty,
nor compliance with the provisions hereof will violate (i) any law, rule, regulation, order, writ, judgment, injunction, decree or award binding on it, or (ii) its articles or certificate of incorporation or by-laws, or (iii) the
provisions of any indenture, instrument or agreement to which it is a party or is subject, or by which it is bound, or conflict with or constitute a default thereunder. No order, consent, adjudication, approval, license, authorization, or validation
of, or filing, recording or registration with, or exemption by, or other action in respect of any governmental or public body or authority, or any subdivision thereof, which has not been obtained by it, is required to be obtained by it in connection
with the execution and delivery of this Guaranty or the performance by it of its obligations hereunder or the legality, validity, binding effect or enforceability of this Guaranty;



---

(c) this Guaranty constitutes a valid and legally binding agreement of the Guarantor, except as the
enforceability of this Guaranty may be limited by the effect of any applicable bankruptcy, insolvency, reorganization, moratorium or similar laws effecting creditors rights generally and by general principles of equity.



|12. | Miscellaneous:
|--- | --------------

(a) Default. In the event
the Counterparty defaults in the payment of any obligation under the Agreement, the Beneficiary shall give written notice to the Guarantor contemporaneously with any notice provided to the Counterparty. Promptly (and, in any event within 5 Business
Days) thereafter, the Guarantor shall pay or cause to be paid to the Beneficiary the amount then due and owing by the Counterparty as required by the Agreement.

(b) Assignment. The Guarantor shall not assign this Guaranty without the express written consent of the Beneficiary and any purported assignment absent such consent is void. The Beneficiary shall be entitled to
assign its rights under this Guaranty in its sole discretion to any affiliate that is directly or indirectly wholly-owned by the ultimate parent of the Beneficiary.

(c) Severability. If any provision or portion of a provision of this Guaranty is declared void and/or unenforceable, such provision or portion (with the exception of the amount of the Guarantors liability
as provided for in Section 1 above, which shall require replacement in full of this Guaranty) shall be deemed severed from this Guaranty which shall otherwise remain in full force and effect.

(d) Amendments. No amendment of this Guaranty shall be effective unless in writing and signed by the Guarantor and the Beneficiary.

(e) Successors and Assigns. This Guaranty shall be binding upon the Guarantor, its successors and permitted assigns and inure to the benefit of and
be enforceable by the Beneficiary, its successors and assigns.

(f) Prior Agreements. This Guaranty embodies the entire agreement and
understanding between the Guarantor and the



---

Beneficiary and supersedes all prior agreements and understandings relating to the subject matter hereof.

(g) Headings. The headings in this Guaranty are for purposes of reference only, and shall not effect the meaning hereof.



|13. | Limitation by Law: All rights, remedies and powers provided in this Guaranty may be exercised only to the extent that the exercise thereof does not violate any applicable
provision of law, and all the provisions of this Guaranty are intended to be subject to all applicable mandatory provisions of law that may be controlling and to be limited to the extent necessary so that they will not render this Guaranty invalid,
unenforceable, in whole or in part, or not entitled to be recorded, registered or filed under the provisions of any applicable law.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|14. | Confidentiality: The Beneficiary shall keep the existence and the terms of this Guaranty confidential. The Beneficiary shall only disclose the existence of this Guaranty to
those officers, directors and employees and agents, and affiliates who have a need to know and who agree to keep the existence and terms of this Guaranty confidential. The Beneficiary shall be responsible for any breach of this confidentiality
provision by its officers, directors and employees and agents, or affiliates. Notwithstanding the foregoing, in the event of enforcement of this Guaranty, this covenant regarding confidentiality shall not apply to any action, claim proceeding
brought to enforce the terms of this Guaranty.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|15. | Governing Law; Jurisdiction; Enforcement: This Guaranty shall in all respects be governed by and construed in accordance with the laws of the State of New
York, without regard to principles of conflicts of laws. The Guarantor and the Beneficiary hereby agree that any legal proceedings which may arise under this Guaranty shall be brought in the United States District Court, located in Manhattan (and if
such court does not have jurisdiction over a matter at controversy between the parties, any New York state court located in Manhattan). Accordingly, the Guarantor and the Beneficiary hereby submit to the jurisdiction of the United States District
Court located in Manhattan (and if such court does not have jurisdiction over a matter at controversy between the parties, any New York state court located in Manhattan) for purposes of all legal proceedings that may arise under this Guaranty. Each
of the Guarantor and the Beneficiary irrevocably waives, to the fullest extent permitted by Applicable Legal Requirements, any objection which it may have or hereafter have to the personal jurisdiction of such court or the laying of the venue of any
such proceeding brought in such a court and any claim that any such proceeding brought in such a court has been brought in an inconvenient forum. Each of the Guarantor and the Beneficiary hereby consents to process being served in any such
proceeding by the mailing of a copy thereof by certified mail, postage prepaid, to its address specified in Section 8 of this
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



---

| | Guaranty. EACH OF THE GUARANTOR AND THE BENEFICIARY HEREBY KNOWINGLY, VOLUNTARILY, AND INTENTIONALLY WAIVES ANY RIGHTS IT MAY HAVE TO A TRIAL BY JURY IN
RESPECT OF ANY LITIGATION OR ARISING OUT OF, UNDER, OR IN CONNECTION WITH, THIS GUARANTY, OR ANY COURSE OF CONDUCT, COURSE OF DEALING, STATEMENTS (WHETHER VERBAL OR WRITTEN), OF THE GUARANTOR AND THE BENEFICIARY IN CONNECTION WITH THIS GUARANTY.
This Guaranty shall be enforced by way of legal action and not by way of any other method of dispute resolution.
| | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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IN WITNESS WHEREOF, the Guarantor has caused this Owner Guaranty to be duly executed and delivered
by its duly authorized officer effective as of this 8th day of September, 2008.



Guarantor:ADA-ES, INC.By:

/s/ Jean BustardName:

Jean BustardTitle:

Chief Operating Officer




---

APPENDIX I-8

Contractor Guaranty

GUARANTY

This Contractor Guaranty (this Guaranty) is made by BE&K, Inc., a Delaware corporation (the Guarantor),
in favor of Red River Environmental Products, LLC (the Beneficiary) in consideration of the Beneficiary entering into that certain Amended and Restated Engineering, Procurement and Construction Agreement, dated as of
September 8, 2008 (the Agreement), by and between the Beneficiary and BE&K Construction Company, LLC, a Delaware limited liability company (the Counterparty). Capitalized terms used and not defined
herein shall have the respective meanings set forth in the Agreement, as amended from time to time.



|16. | Guaranty: For valuable and separate consideration, the receipt of which is hereby acknowledged by the Guarantor, the Guarantor, as primary obligor and not as surety, does
hereby unconditionally and absolutely guarantee to the Beneficiary in accordance with the provisions of this Guaranty, the prompt, full and faithful payment and performance when due (whether at maturity, upon a default, upon resolution of a dispute,
by acceleration or otherwise under the Agreement) by the Counterparty to the Beneficiary of all amounts or acts due to be paid to or performed for the Beneficiary under the Agreement (the Guaranteed Obligations) for so long as the
Guaranteed Obligations remain in effect under and pursuant to the Agreement. The Guarantors obligations and liability under this Guaranty shall be limited to, and fully satisfied upon the payment of amounts due or performance of acts to be
completed under and pursuant to the obligations of the Counterparty under the Agreement.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|17. | Guaranty Absolute: The Guarantor guarantees that the Guaranteed Obligations will be performed (or paid in full) in complete accordance with the terms of the Agreement,
regardless of any law, regulation or order now or hereafter in effect in any jurisdiction affecting any of such terms or the rights of the Beneficiary with respect thereto. The obligations of the Guarantor under this Guaranty are independent of but
related to the Counterpartys obligations under the Agreement, and a separate action or actions may be brought and prosecuted against the Guarantor to enforce this Guaranty, irrespective of whether any action or arbitration is brought against
the Counterparty or whether the Counterparty is joined in any such action or arbitration or whether the Counterparty is the subject of insolvency, bankruptcy, or reorganization proceedings. The liability of the Guarantor under this Guaranty shall be
irrevocable, absolute and unconditional irrespective of, and the Guarantor hereby irrevocably waives any defenses it may now or hereafter have in any way relating to, any or all of the following:
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



---

(a) any lack of validity or enforceability of the Agreement;

(b) any change in the time, manner or place of payment or performance of, or in any other term, of all or any of the Guaranteed Obligations under the
Agreement, any modification, extension or waiver of any of the terms of the Agreement, or any other amendment or waiver of or any consent to departure from any term of the Agreement, all or any of which shall be binding on the Guarantor;

(c) any taking, exchange, release or non-perfection or the taking or failure to take any other action with respect to any collateral, or any taking,
release or amendment or waiver of or consent to departure from any other guaranty, for all or any of the Guaranteed Obligations;

(d) any
requirement that the Beneficiary proceed against the Counterparty, any other person or entity, any collateral or any manner of application of any collateral, or proceeds thereof, to all or any of the Guaranteed Obligations, or any manner of sale or
other disposition of any collateral for all or any of the Guaranteed Obligations;

(e) any change, restructuring or termination of the
company structure or existence of the Counterparty or any of its subsidiaries;

(f) any lack or failure of notice or any failure of the
Beneficiary to disclose to the Counterparty or the Guarantor any information relating to the financial condition, operations, properties or prospects of the Counterparty or the Guarantor, or relating to the Agreement, as the case may be, now or in
the future known to the Beneficiary (the Guarantor waiving any duty on the part of the Beneficiary to disclose such information);

(g) any
existence of or reliance on any representation by the Beneficiary that might otherwise constitute a defense available to, or a discharge of, the Guarantor or any other guarantor or surety; and

(h) any permitted assignment of the Agreement.

Notwithstanding any provision to the contrary contained herein, the Guarantors liability for the Guaranteed Obligations hereunder shall be and is specifically limited to payments required to be made (even if such payments are deemed
to be damages) or acts required to be performed under the Agreement, and in no event shall the Guarantor be subject hereunder to consequential, exemplary, loss of profits, punitive, tort, or any other damages (other than those arising out of the
Agreement), costs, or attorneys fees (except as provided herein including, without limitation, in Section 5 hereof).



---

This Guaranty shall continue to be effective or be reinstated, as the case may be, if at any time any
payment of any of the Guaranteed Obligations is rescinded or performance of any of the Guaranteed Obligations is rightfully rejected or must otherwise be returned by the Beneficiary or any other person upon the insolvency, bankruptcy or
reorganization of the Counterparty or the Guarantor or otherwise, all as though such payments had not been made. The obligations of the Guarantor under this Guaranty shall at all times rank at least pari passu in right of payment with all
other unsecured and unsubordinated indebtedness (actual or contingent) of the Guarantor, except as may be required by law. This Guaranty shall continue to be effective if the Counterparty merges or consolidates with or into another entity, loses its
separate legal identity or ceases to exist.

This Guaranty is a continuing guaranty of the payment (and not of collection) and performance
by the Counterparty of its obligations under the Agreement. In no event shall the Guarantors obligations and/or liability to the Beneficiary exceed the Counterpartys obligations and/or liability under the Agreement, such obligations
and/or liability to be determined without regard to the insolvency, bankruptcy or reorganization of the Counterparty.



|18. | Term and Termination: This Guaranty shall continue in full force and effect until the satisfaction of all obligations of the Counterparty under the Agreement;
provided, however, upon termination hereof, the Guarantor agrees that (a) the obligations and liabilities hereunder shall continue in full force and effect with respect to any Guaranteed Obligations to the extent then subject to
pending claims identified in writing by the Beneficiary to the Guarantor or the Counterparty and existing on the termination date, whether such Guaranteed Obligations with respect to such pending claims become due prior to or after the termination
date and (b) this Guaranty, and Guarantors obligations and liabilities hereunder, shall be reinstated in accordance with Section 2 hereof in the event any payment hereunder is rescinded or must be set aside in which case this
Guaranty and such payment obligations and liabilities shall continue until indefeasibly paid in full.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|19. | Waivers and Acknowledgments: The Guarantor hereby waives presentment, protest, acceleration, dishonor, promptness, diligence, filing of claims with a court
in the event of insolvency or bankruptcy of the Counterparty, notice of acceptance of this Guaranty and any other notice with respect to any of the Guaranteed Obligations and this Guaranty and any requirement that the Beneficiary protect, secure,
perfect or insure any lien or any property subject thereto or exhaust any right or take any action against the Counterparty or any other Person or entity, or any collateral. The Guarantor hereby waives any right to revoke this Guaranty.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



---

Except as to applicable statutes of limitation, no delay of the Beneficiary in the exercise of, or failure to exercise, any rights hereunder shall operate as
a waiver of such rights, a waiver of any other rights, or a release of the Guarantor from any obligations hereunder, nor shall any single or partial exercise by the Beneficiary of any right, remedy or power hereunder preclude any other or future
exercise of any right, remedy or power. Each and every right, remedy and power hereby granted to the Beneficiary or allowed it by law or other agreement shall be cumulative and not exclusive of any other, and may be exercised by the Beneficiary from
time to time.



|20. | Expenses: Notwithstanding (and in addition to) the limit on Guarantors liability hereunder set forth in Section 1, the Guarantor agrees to pay on demand any and
all out-of-pocket costs, including reasonable legal fees and expenses, and other expenses incurred by the Beneficiary in successfully enforcing the Guarantors payment and/or performance obligations under this Guaranty; provided,
however, that the Guarantor shall not be liable for any expenses of the Beneficiary if no payment and/or performance under this Guaranty is due.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|21. | Subrogation: The Guarantor will not exercise any right that it may now or hereafter acquire against the Counterparty that arises from the existence, payment,
performance or enforcement of the Guarantors payment and performance obligations under this Guaranty, including, without limitation, any right of subrogation, reimbursement, exoneration, contribution or indemnification and any right to
participate in any claim or remedy of the Beneficiary against the Counterparty or any collateral, whether or not such claim, remedy or right arises in equity or under contract, statute or common law, including, without limitation, the right to take
or receive from the Counterparty, directly or indirectly, in cash or other property or by setoff or in any other manner, payment or security on account of such claim, remedy or right, unless and until all of the obligations of the Counterparty under
the Agreement and all other amounts due under this Guaranty shall have been paid in full in cash (and not subject to disgorgement in bankruptcy or otherwise). If any amount shall be paid to the Guarantor in violation of the preceding sentence at any
time prior to the later of the payment in full in cash of the Guaranteed Obligations and all other amounts due under this Guaranty, the Guarantor shall hold such amount as agent for the benefit of the Beneficiary, which amount shall forthwith be
paid to the Beneficiary to be credited and applied to the Guaranteed Obligations and all other amounts due under this Guaranty, whether matured or unmatured, in accordance with the terms of the Agreement, or to be held as collateral for any
Guaranteed Obligations or other amounts due under this Guaranty thereafter arising. If (a) the Guarantor shall make payment to the Beneficiary or perform or cause to be performed all of all or any part of the Guaranteed Obligations and
(b) all of the Guaranteed Obligations, all other amounts payable under this Guaranty shall be paid in full in cash and all acts required to be
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



---

| | performed have been satisfactorily completed, the Beneficiary will, at the Guarantors request and expense execute and deliver to the Guarantor
appropriate documents, without recourse and without representation or warranty by the Beneficiary, assigning, but only to the extent of the amounts so paid or acts so performed, all of the Beneficiarys rights and remedies under the Agreement,
to seek and receive payment under the Agreement. In the event the Guarantor pays part or all of the Counterpartys payment obligations or satisfies part or all of the Counterpartys performance obligations, the Guarantor shall be entitled
to the Counterpartys rights and benefits under the Agreement and shall be subrogated to the Counterpartys rights with respect to such of the Counterpartys obligations so paid or performed by the Guarantor.
| | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|22. | Reservation of Defenses; Disputes Under the Agreement:
|--- | ------------------------------------------------------

(a) In furtherance of the provision in Section 1 hereof that the Guarantor is a primary obligor and not a surety, the Guarantor agrees that it will remain bound upon this Guaranty notwithstanding any defenses which, pursuant to the
laws of suretyship, would relieve a guarantor of its obligations under a guaranty. Notwithstanding anything to the contrary in this Guaranty, the Guarantor does reserve the right to assert defenses which the Counterparty may have to payment or
performance of any Guaranteed Obligation other than defenses arising from the bankruptcy or insolvency of the Counterparty and other defenses expressly waived in this Guaranty; provided, however, if a defense has been asserted by the Counterparty
with respect to any particular demand for payment or performance by the Beneficiary under the Agreement and, as a result of such assertion, a dispute arose between the Counterparty and the Beneficiary under the Agreement which has been resolved in
accordance with the dispute resolution provisions under the Agreement, then the Guarantor shall not have the right to assert the same defense with respect to a demand for payment of the amount or performance of the act under this Guaranty that had
been the subject of such resolved dispute.

(b) In the event that any issue, matter or dispute arises which is resolved in accordance with
the dispute resolution provisions under the Agreement, such issue, matter or dispute shall be deemed to have been conclusively determined for the purpose of this Guaranty and neither party to this Guaranty will thereafter take any steps to argue
that such issue, matter or dispute should be resolved under this Guaranty in any different manner from the resolution under the Agreement and the parties waive any right to do so.



|23. | Notices: All demands, notices and other communications provided for hereunder shall, unless otherwise specifically provided herein, (a) be in writing
addressed to the party receiving the notice at the address set forth below or at such other address as may
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



---

| | be designated by written notice, from time to time, to the other party, and (b) be effective upon receipt, when mailed by U.S. mail, registered or
certified, return receipt requested, postage prepaid, or personally delivered, or sent by overnight messenger with delivery confirmed. Notices shall be sent to the following addresses:
| | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

If to the Guarantor:



|                               |  |     |  |                              
|------------------------------ |  | --- |  | -----------------------------
|BE&K, Inc.                     |  | and |  | BE&K, Inc.                   
|2000 International Park Drive  |  |     |  | 2000 International Park Drive
|Birmingham, AL 35243           |  |     |  | Birmingham, AL 35243         
|Attn: Clyde Smith              |  |     |  | Attn: Ray Kosak              
|Title: Chief Financial Officer |  |     |  | Title: Project Manager       

With a copy (which shall not constitute notice) to

BE&K Construction Company

2000 International Park Drive

Birmingham, AL 35243

Attn: General Counsel

If to the Beneficiary:



|                                      |  |                                
|------------------------------------- |  | -------------------------------
|Red River Environmental Products, LLC |  | and     Red River Environmental
|Products, LLC                         |  |                                
|c/o ADA-ES, Inc.                      |  | c/o ADA-ES, Inc.               
|8100 SouthPark Way, Suite B           |  | 8100 SouthPark Way, Suite B    
|Littleton, CO 80120-4525              |  | Littleton, CO 80120-4525       
|Attn: Richard Schlager                |  | Attn: Tony Smith               
|Title: Vice President, Administration |  | Title: Contract Manager        

With a copy (which shall not constitute notice) to

Jonathan Lagarenne

997 Lenox Drive, Building 3

Lawrenceville, NJ 08648-2311

Ph: 609-896-4588

Fax: 609-896-1469



|24. | Demand and Payment/Performance: Any demand by the Beneficiary for payment or performance hereunder shall be in writing, signed by a duly authorized officer
of the Beneficiary and delivered to the Guarantor pursuant to Section 8 hereof, and
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



---

| | shall (a) reference this Guaranty, (b) specifically identify the Counterparty and the Beneficiary, the Guaranteed Obligations to be paid and the
amount of such Guaranteed Obligations and/or acts to be performed as Guaranteed Obligations, and (c) set forth payment and/or performance instructions. With respect to Guaranteed Obligations for payment, there are no other requirements of
notice, presentment or demand. The Guarantor shall pay, or cause to be paid to the Beneficiary in US dollars, such Guaranteed Obligations within five (5) Business Days of receipt of such demand. Payment made under this Guaranty will be made
without setoff or reduction for any amounts that are or may be owed by the Beneficiary to the Guarantor as a result of an agreement or understanding between the Guarantor and the Beneficiary unrelated to the subject matter of this Guaranty. Late
payments hereunder are subject to interest at a per annum rate of interest equal to the Prime Rate (as published from time to time in the Money Rates table of The Wall Street Journal) plus two (2) percent. With
respect to Guaranteed Obligations for performance, the Guarantor shall perform or cause to be performed for the Beneficiary the Guaranteed Obligations within five (5) Business Days of receipt of such demand.
| | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|25. | Material Adverse Change:In the event that the Guarantors long-term creditworthiness materially deteriorates relative to its creditworthiness as of the date hereof as
determined using commercially reasonable standards, the Beneficiary shall notify the Guarantor of same and the representatives of each Party shall meet within ten (10) days to review Guarantors financial condition and provide suggestions
for the amount of payment assurance that the Beneficiary shall reasonably require to be delivered to the Beneficiary to secure Guarantors payment obligations hereunder based on such decline in Guarantors financial condition. Such
additional payment assurance shall take one of the following conventions at the sole discretion of the Guarantor: (a) a guarantee from a Guarantor affiliate in form, substance and amount mutually acceptable to the Parties; (b) a
letter of credit in form, substance and amount and from a financial institution that is mutually acceptable to the Parties; or (c) an irrevocable conditional bond in form, substance and amount and issued from an insurance company or financial
institution that is mutually acceptable to the Parties. Guarantor shall provide such additional payment assurance within ten (10) Business Days of the meeting.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|26. | Representations and Warranties of the Guarantor: The Guarantor represents and warrants that:
|--- | --------------------------------------------------------------------------------------------

(a) it is a corporation duly incorporated and validly existing under the laws of the State of Delaware and has the corporate power and authority to
execute, deliver and carry out the terms and provisions of this Guaranty;



---

(b) neither the execution and delivery by it of this Guaranty, nor compliance with the provisions hereof
will violate (i) any law, rule, regulation, order, writ, judgment, injunction, decree or award binding on it, or (ii) its articles or certificate of incorporation or by-laws, or (iii) the provisions of any indenture, instrument or
agreement to which it is a party or is subject, or by which it is bound, or conflict with or constitute a default thereunder. No order, consent, adjudication, approval, license, authorization, or validation of, or filing, recording or registration
with, or exemption by, or other action in respect of any governmental or public body or authority, or any subdivision thereof, which has not been obtained by it, is required to be obtained by it in connection with the execution and delivery of this
Guaranty or the performance by it of its obligations hereunder or the legality, validity, binding effect or enforceability of this Guaranty;

(c) this Guaranty constitutes a valid and legally binding agreement of the Guarantor, except as the enforceability of this Guaranty may be limited by the effect of any applicable bankruptcy, insolvency, reorganization, moratorium or similar
laws effecting creditors rights generally and by general principles of equity.



|27. | Miscellaneous:
|--- | --------------

(a) Default. In the event
the Counterparty defaults in the payment or performance of any obligation under the Agreement, the Beneficiary shall give written notice to the Guarantor contemporaneously with any notice provided to the Counterparty. Promptly (and, in any event
within 5 Business Days) thereafter, the Guarantor shall pay or cause to be paid the amount then due and owing by the Counterparty and/or perform or cause to be performed the acts then required of Counterparty to or form the Beneficiary as required
by the Agreement.

(b) Assignment. The Guarantor shall not assign this Guaranty without the express written consent of the
Beneficiary and any purported assignment absent such consent is void. The Beneficiary shall be entitled to assign its rights under this Guaranty in its sole discretion to any affiliate that is directly or indirectly wholly-owned by the ultimate
parent of the Beneficiary.

(c) Severability. If any provision or portion of a provision of this Guaranty is declared void and/or
unenforceable, such provision or portion (with the exception of the amount of the Guarantors liability as provided for in Section 1 above, which shall require replacement in full of this Guaranty) shall be deemed severed from this
Guaranty which shall otherwise remain in full force and effect.

(d) Amendments. No amendment of this Guaranty shall be effective
unless in writing and signed by the Guarantor and the Beneficiary.



---

(e) Successors and Assigns. This Guaranty shall be binding upon the Guarantor, its successors and
permitted assigns and inure to the benefit of and be enforceable by the Beneficiary, its successors and assigns.

(f) Prior
Agreements. This Guaranty embodies the entire agreement and understanding between the Guarantor and the Beneficiary and supersedes all prior agreements and understandings relating to the subject matter hereof.

(g) Headings. The headings in this Guaranty are for purposes of reference only, and shall not effect the meaning hereof.



|28. | Limitation by Law: All rights, remedies and powers provided in this Guaranty may be exercised only to the extent that the exercise thereof does not violate any applicable
provision of law, and all the provisions of this Guaranty are intended to be subject to all applicable mandatory provisions of law that may be controlling and to be limited to the extent necessary so that they will not render this Guaranty invalid,
unenforceable, in whole or in part, or not entitled to be recorded, registered or filed under the provisions of any applicable law.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|29. | Confidentiality: The Beneficiary shall keep the existence and the terms of this Guaranty confidential. The Beneficiary shall only disclose the existence of this Guaranty to
those officers, directors and employees and agents, and affiliates who have a need to know and who agree to keep the existence and terms of this Guaranty confidential. The Beneficiary shall be responsible for any breach of this confidentiality
provision by its officers, directors and employees and agents, or affiliates. Notwithstanding the foregoing, in the event of enforcement of this Guaranty, this covenant regarding confidentiality shall not apply to any action, claim proceeding
brought to enforce the terms of this Guaranty.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|30. | Governing Law; Jurisdiction; Enforcement: This Guaranty shall in all respects be governed by and construed in accordance with the laws of the State of New
York, without regard to principles of conflicts of laws. The Guarantor and the Beneficiary hereby agree that any legal proceedings which may arise under this Guaranty shall be brought in the United States District Court, located in Manhattan (and if
such court does not have jurisdiction over a matter at controversy between the parties, any New York state court located in Manhattan). Accordingly, the Guarantor and the Beneficiary hereby submit to the jurisdiction of the United States District
Court located in Manhattan (and if such court does not have jurisdiction over a matter at controversy between the parties, any New York state court located in Manhattan) for purposes of all legal proceedings that may arise under this Guaranty. Each
of the Guarantor and the Beneficiary irrevocably waives, to the fullest extent permitted by Applicable Legal Requirements, any objection which it may have or hereafter have to the personal jurisdiction of such court or the laying of the
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



---

| | venue of any such proceeding brought in such a court and any claim that any such proceeding brought in such a court has been brought in an inconvenient
forum. Each of the Guarantor and the Beneficiary hereby consents to process being served in any such proceeding by the mailing of a copy thereof by certified mail, postage prepaid, to its address specified in Section 8 of this Guaranty. EACH OF
THE GUARANTOR AND THE BENEFICIARY HEREBY KNOWINGLY, VOLUNTARILY, AND INTENTIONALLY WAIVES ANY RIGHTS IT MAY HAVE TO A TRIAL BY JURY IN RESPECT OF ANY LITIGATION OR ARISING OUT OF, UNDER, OR IN CONNECTION WITH, THIS GUARANTY, OR ANY COURSE OF
CONDUCT, COURSE OF DEALING, STATEMENTS (WHETHER VERBAL OR WRITTEN), OF THE GUARANTOR AND THE BENEFICIARY IN CONNECTION WITH THIS GUARANTY. This Guaranty shall be enforced by way of legal action and not by way of any other method of dispute
resolution.
| | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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IN WITNESS WHEREOF, the Guarantor has caused this Contractor Guaranty to be duly executed and
delivered by its duly authorized officer effective as of this 8th day of September, 2008.



Guarantor:BE&K, INC.By:Name:Title:




---

Appendix I-9

FORM OF LETTER OF CREDIT

*************************************************************************************************************

Irrevocable Standby Letter of Credit No.

Issuance Date:
, 20

To:

Red River Environmental Products, LLC

c/o ADA-ES, Inc.

8100 SouthPark Way

Littleton, CO 80120

Attn: Richard Schlager

Reference: Amended and Restated Engineering, Procurement and Construction Contract dated September 8, 2008 between Red River Environmental Products, LLC (Beneficiary) and BE&K Construction
Company, LLC (BE&K) (the Contract)

At the request and for the account of BE&K, we hereby establish our Irrevocable Standby
Letter of Credit No.  in your favor in the maximum aggregate amount of  US dollars
($).

The initial stated amount of this letter of credit will be
 US dollars ($) upon issuance. The stated amount of this letter of credit will
automatically adjust by its terms, without amendment, as follows:



|                           |  |      
|-------------------------- |  | -----
|Initial Stated Amount      |  | $    
|                           | 
|(milestone date) , 20      |  | $    
|                           | 
|(milestone date) , 20      |  | $    
|                           | 
|(milestone date) , 20      |  | $    
|                           | 
|(milestone date) , 20      |  | $    
|                           | 
|(milestone date) , 20      |  | $    
|                           | 
|(milestone date) , 20      |  | $    
|                           | 
|(milestone date) , 20      |  | $    
|                           | 
|(milestone date) , 20      |  | $    
|                           | 
|(milestone date) , 20      |  | $    
|                           | 
|Date of expiry (see below) |  | $ -0-

[NOTE  THE ABOVE CHANGES IN THE STATED AMOUNT

OF THE LETTER OF CREDIT WILL BE DERIVED

FROM THE PROJECTED BILLING SCHEDULE.]



---

Drawings hereunder may be made by you on any business day prior to the expiration of this letter of credit by delivering
no later than 10:30 a.m. (Central Standard Time) on such business day, to  Bank, [INSERT BANK ADDRESS](or at such other address as may be designated in the
future by written notice delivered to you):



|1. | Your sight draft drawn on  Bank, substantially in the form of Exhibit A hereto.
|-- | -------------------------------------------------------------------------------



|2. | A written draw statement purportedly signed by an authorized representative of Beneficiary and substantially in the form of Exhibit B hereto.
|-- | ---------------------------------------------------------------------------------------------------------------------------------------------



|3. | Original Irrevocable Standby Letter of Credit No. . In the event of a partial draw,
 Bank shall return the original Irrevocable Standby Letter of Credit to you.
|-- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------

We hereby agree with you that drafts drawn under and presented in strict compliance with the terms of this letter of credit will be duly honored by us. Partial and multiple drawings are permitted under this letter of
credit. Upon each payment made by us hereunder, the stated amount shall be permanently reduced by an amount equal to such payment.

If a demand for payment
made by you hereunder does not, in any instance, conform to the terms and conditions of this letter of credit, we shall give you prompt notice that the demand for payment was not effected in accordance with the terms and conditions of this letter of
credit, stating the reason thereof and that we will, upon your instructions, hold any documents at your disposal or return the same to you. Upon being notified that the drawing request was not effected in conformity with this letter of credit, you
may attempt to correct any such non-conforming drawing request to the extent that you are entitled to do so, provided that the necessary conforming documents are presented to us by the expiry date of this letter of credit.

This letter of credit expires at our counters at 3:00 p.m. (Central Standard Time) on the earlier of:



| | (A) | The  calendar day following Final Completion (the occurrence of which will be confirmed to us by delivery of a copy of the Final Completion
Certificate substantially in the form of Exhibit C hereto); or
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (B) | , 20.
| | --- | -----

Beneficiary agrees to surrender this letter of credit to  Bank for cancellation promptly
upon its expiration.

As used herein business day shall mean any day on which commercial banks are not authorized or required to close in
[City, State].

This letter of credit shall be governed by the 1993 Revision of the Uniform Customs and Practice for Documentary Credits of
the International Chamber of Commerce (Publication No. 600) (the Uniform Customs) which shall in all respects be deemed a part hereof as fully as if incorporated herein, except as modified hereby. This letter of credit shall be
deemed to be a contract made under the laws of the state of  and shall, as to matters not governed by the Uniform Customs, be governed by and construed in accordance with
the law of said state, without regard to principles of conflicts of law.



---

This letter of credit sets forth in full our undertaking, and such undertaking shall not in any way be modified, amended,
amplified or limited by reference to any document, instrument or agreement referred to herein, except for any notices referred to herein, and any such reference shall not be deemed to incorporate herein by reference any document, instrument or
agreement except as set forth above.

Bank



|                    
|--------------------
|                    
|Authorized signature



---

Exhibit A

Irrevocable Letter of Credit No.

FORM OF SIGHT DRAFT

*************************************************************************************************************

Date: , 20

Pay to the order of , to
 Bank, [BENEFICIARYS ACCOUNT INFORMATION TO BE INSERTED], the amount of
$, drawn upon  Bank as issuer of its Irrevocable Letter of Credit No.
, dated , 20.



RED RIVER ENVIRONMENTAL PRODUCTS, LLCBy:Title:Date:




---

Exhibit B

Irrevocable Letter of Credit No.

[FORM OF CERTIFICATION]

*************************************************************************************************************

To:  Bank

The
undersigned, a duly authorized representative of Beneficiary, hereby certifies to you that:



|1. | Red River Environmental Products, LLC is the Beneficiary of Irrevocable Letter of Credit No. , and in
that capacity has today delivered a sight draft to you demanding payment under the letter of credit in the amount of $, which amount is not in excess of the current
stated amount of the letter of credit.
|-- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|2. | BE&K has failed to perform in accordance with the Contract as follows [BENEFICIARY TO INSERT APPROPRIATE DRAW LANGUAGE FROM THE FOLLOWING]:
|-- | -------------------------------------------------------------------------------------------------------------------------------------------

We refer to your Irrevocable Letter of Credit No.
. Red River Environmental Products, LLC has remitted all undisputed milestone payments due and payable to BE&K in accordance with Section 5 of the Contract.
BE&K has failed to fulfill its obligations under the Contract and is in default pursuant to Section [INSERT APPLICABLE SECTION] of the Contract.
Beneficiary has given all Notices required to be given to Contractor in the Contract. The amount of Beneficiarys draw does not exceed Beneficiarys entitlement to retention under the Contract for milestone payments paid by Beneficiary to
Contractor.

a) Or

We refer to your Irrevocable Letter of Credit No. . Red River Environmental Products, LLC has remitted all undisputed milestone payments due to BE&K in
accordance with Section  of the Contract. The existing expiry date of this letter of credit precedes the minimum expiry date allowed under Section 5.1.13.3 of the
Contract. BE&K is obligated to extend the maturity date of this letter of credit to Final Completion of the Work or to replace it with a letter of credit of equal value which meets the expiry requirement under Section 5.1.13.3 the Contract.
BE&K has failed to cure such failure no later than 10 business days prior to the existing expiry date of this letter of credit.

b)
Or



---

We refer to your Irrevocable Letter of Credit No.
. Red River Environmental Products, LLC has remitted all undisputed milestone payments due and payable to BE&K in accordance with Section 5 of the Contract. The
rating of the bank or trust company that issued the Letter of Credit has fallen below a rating of A-, as determined by Standard and Poors Corporation, or a rating of A-3, as determined by Moodys Investors Services, Inc., and BE&K has
failed, within ten (10) Business Days after receipt of written notice (copy attached) thereof by BE&K, to replace such Letter of Credit with another Letter of Credit issued by a financial institution acceptable to Beneficiary on the same
terms as the Letter of Credit being replaced.



|3. | The amount specified in paragraph (1) above is due and payable to Beneficiary under the terms of the Contract.
|-- | --------------------------------------------------------------------------------------------------------------



|                                      |  | 
|------------------------------------- |  | 
|RED RIVER ENVIRONMENTAL PRODUCTS, LLC
|                                      | 
|By:                                   |  | 
|                                      | 
|Title:                                |  | 
|                                      | 
|Date:                                 |  | 



---

Exhibit C

Irrevocable Letter of Credit No.

SAMPLE FINAL COMPLETION CERTIFICATE

*************************************************************************************************************

This officers certificate is issued on this  day of , 20 pursuant to the Amended and Restated
Engineering, Procurement and Construction Contract dated , 20 between Red River Environmental Products, LLC and
BE&K Construction Company, LLC (BE&K) (the Contract). Capitalized terms not otherwise defined herein shall have the meaning assigned to such terms in the Contract.

By this certificate I, [INSERT NAME OF AUTHORIZED BE&K REPRESENTATIVE], the duly appointed and acting [TITLE OF AUTHORIZED BE&K
REPRESENTATIVE] of BE&K, hereby certify that Final Completion has occurred.

In witness hereof, the undersigned has executed this
certificate this  day of , 20



|       |  | 
|------ |  | 
|       | 
|By:    |  | 
|       | 
|Title: |  | 
|       | 
|Date:  |  | 



---

APPENDIX I-10

Form of Opinion

[Letterhead of Counsel]

[Date of Closing]



|To: | [The parties listed on Schedule 1, attached hereto]
|--- | ---------------------------------------------------



|Re: | Amended and Restated Engineering, Procurement and Construction Contract, dated September 8, 2008, by and between BE&K Construction Company, LLC and Red River Environmental
Products, LLC.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Ladies and Gentlemen:

This opinion is furnished to you on behalf of BE&K Construction Company, LLC (the Contractor), a Delaware limited liability company, in connection with the execution and delivery by the Contractor of the following
documents (the Documents):

Amended and Restated Engineering, Procurement and Construction Contract, dated as of
September 8, 2008, between the Contractor and Red River Environmental Products, LLC, a Delaware limited liability company (Owner),

[Insert Reference to any other Contractor or Contractor Guarantor Agreements (i.e. Consent to Assignment, Parent Guaranty etc)]

In this connection, we have examined such certificates of public officials, certificates of officers of the Contractor and copies certified to our satisfaction of company Documents and records of the Contractor and of
other papers, and have made such other investigations, as we have deemed relevant and necessary as a basis for our opinion hereinafter set forth. We have relied upon such certificates of public officials and of officers of the Contractor with
respect to the accuracy of material factual matters contained therein which were not independently established.

This opinion letter is
furnished to you pursuant to the Amended and Restated Engineering, Procurement and Construction Agreement, dated , 2008,
between Owner and Contractor, with the understanding that you are compensating Contractor under such agreements in reliance upon the opinions contained herein.

This firm is counsel to the Contractor and our attorneys are admitted to the bar[s] of the State of  [and the State of
].

We express no opinion as to the law of any jurisdiction
other than the general limited liability company laws of the State of , [New York contract law,] the laws of the State of
 or the federal laws of the United States of America.



---

Based on the foregoing and upon such investigation as we have deemed necessary, it is our opinion that:



| | 1. | The Contractor is a limited liability company duly formed, validly existing and in good standing under the laws of the State of Delaware. The Contractor has all necessary power,
authority and full legal right to (a) own its property and to carry on its business as now being conducted and as currently proposed to be conducted, (b) execute and deliver the Documents and (c) perform its covenants and obligations
under the Documents.
| | -- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | 2. | The Contractor has duly qualified and is in good standing as a foreign limited liability company in each jurisdiction where the character of its properties or the nature of its
activities makes such qualification necessary, except where the failure to so qualify and be in good standing would not have a material adverse effect on the ability of the Contractor to perform its obligations under the Documents.
| | -- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | 3. | The execution and delivery of the Documents, and the performance of the Contractors obligations under the Documents, have been duly authorized by all necessary company and
member action. Each of the Documents has been duly executed and delivered by the Contractor.
| | -- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | 4. | Neither the execution and delivery by the Contractor of the Documents, nor the performance by the Contractor of its obligations under the Documents, (a) contravenes or violates
any provisions of [insert description of the Contractors organizational Documents], (b) contravenes or violates, or results in any breach of, or constitutes a breach or other default under, or results in the creation or imposition of any
lien on any property or assets of the Contractor pursuant to, any provisions of any agreement, document, instrument, mortgage, indenture or undertaking to which the Contractor is a party or which is or purports to be binding upon the Contractor or
on any of its property or assets, or (c) contravenes or violates any provisions of national, state or local law.
| | -- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | 5. | No governmental approval or other approval, consent or other action from or in respect of, or filing or registration with, or notice to any federal, state or local governmental
authority is required to be given, obtained, made or taken in connection with (a) the execution and delivery of any of the Documents or to ensure binding effect, of any of the Documents, or (b) the performance by the Contractor of its
obligations under the Documents.
| | -- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | 6. | To the best of our knowledge after due inquiry, there are no actions, suits, investigations or proceedings by or before any court, arbitrator, administrative agency or other
governmental authority against or affecting the Contractor or any of its respective properties or rights. To the best of our knowledge after due inquiry, the Contractor is not in breach of or otherwise in default in respect of any order of any
court, arbitrator, administrative agency or other governmental authority by or to which it or any of its respective properties or rights may be bound or subject.
| | -- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | 7. | [Each of the Documents constitutes the legal, valid and binding obligation of the Contractor, and is enforceable against the Contractor in accordance with its terms, except to the
extent that such enforceability may be limited by applicable bankruptcy, insolvency, reorganization, moratorium or similar laws affecting the enforcement of creditors rights generally or by general principles of equity
| | -- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

This opinion is being furnished solely to the addressees and their legal advisers. Accordingly, it may not be relied upon by
any other persons without the prior written consent of the undersigned. The undersigned giving this opinion undertakes no obligation to update this opinion.

Very truly yours,



---

SCHEDULE 1

[Enter parties to receive Opinion, including Collateral Agent(s) and Note Purchasers]



---

APPENDIX I-11

Lien Waiver Form

CONTRACTORS AFFIDAVIT, RELEASE OF LIEN & GENERAL RELEASE

CHECK ONE:



| |  ̈ | PARTIAL RELEASE ACCOMPANYING INTERIM PROGRESS INVOICE BILLING
| | - | -------------------------------------------------------------



| |  ̈ | FINAL RELEASE ACCOMPANYING FINAL INVOICE BILLING
| | - | ------------------------------------------------

AS OF  KNOW ALL MEN BY THESE PRESENT, that with reference to a contract dated and
identified as , the undersigned contractor (hereinafter called Contractor_) and
(hereinafter called Owner), the (describe the work to be
performed)(hereinafter called Work) at Owners project site located at Armistead, Red River Parish, Louisiana (hereinafter called Project),
and in consideration of and effective upon receipt of payment of the sum of (insert period invoice amount)to be paid by Owner to Contractor as partial payment under said Contract, said sum, plus invoices previously submitted and yet unpaid, representing the full amount due
to Contractor as of , less and except that retention in the amount of $[IF FINAL RELEASE
STATE NONE] still being withheld, all under and pursuant to the said Contract, Contractor does hereby:



|1. | Certify to Owner that all persons, firms and associations, corporations or other entities furnishing labor, services, materials or supplies, according to plans and specifications,
or extra items, with respect to such Work have been paid in full as currently due as of the date hereof and that all bills and claims of every nature, including any and all applicable federal, state and local sales, use, excise or similar taxes or
import duties, license fees or other royalties, incurred in connection therewith have been fully paid and satisfied as currently due, except the following (none unless
noted):
|-- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|
|
|



|2. | Certify to Owner that there are no financing statements, chattel mortgages, conditional bills of sale, retention of title agreements or any other liens affecting equipment apparatus
or fixtures that have become part of the Work; and that it has and will not assign its claim for payment or its right to perfect a lien against the Work, the Project, or any component thereof;
|-- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|3. | Remise, release, waive, relinquish and forever quitclaim unto Owner, their successors and assigns, any and all manner of liens, claims and demands whatsoever against Owner which the
Contractor ever had, now has or which it or its successors or assigns hereafter can, shall or may have with regard to the Work, the project or any component thereof furnished under the said Subcontract as of the date of this affidavit and release,
except the following (none unless
noted):
|-- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

[FINAL RELEASE REQUIRES THAT NONE BE STATED];



|4. | Acknowledge and agree that this affidavit and release is made for the purpose of inducing Owner to make full payment to Contractor, and the undersigned does hereby promise and agree
to indemnify and hold harmless Owner of and from any and all loss, cost, damage, liability and expense of any kind, including reasonable attorneys fees, which Owner may incur or have asserted against it by the undersigned, its successors or
assigns or any other party resulting from or connected with a lien or claim to a lien on the above-described Project and Work thereon, and for labor, service, materials and supplies provided by the undersigned Subcontractor, through and including
the date hereof, AND IF THE RELEASE IS FOR FINAL PAYMENT, WHICH MAY ARISE AFTER THE DATE HEREOF.
|-- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



---

IN WITNESS WHEREOF, the undersigned has caused this instrument to be executed on its behalf by its duly authorized
officers, and its seal to be hereunto affixed, this day of, 200[8].

ATTEST:



|    |  |       
|--- |  | ------
|By: |  | By:   
|    |  | Title:

Subscribed and sworn to before me this
day of , 2008





|             
|-------------
|             
|NOTARY PUBLIC



---

APPENDIX J

Project Site

The Project Site is located on the south side of Parish Road 604 in Armistead, Red River Parish, Louisiana.
Specifically the Project Site is:

A 58.760 acre, more or less, tract of land in the Northeast Quarter of Section 28 and the Southeast Quarter of
Section 21, all lying in Township 12 North, Range 10 West, Red River Parish, Louisiana and being more particularly described as follows:

Commence at a Cotton Spindle set for corner at the Northeast corner of said Section 28; thence run
S0°1335W along the East line of said Section 28 to the South Right-of-Way of Red River Parish Road No. 604, a distance of 12.19 feet, to a 1/2 Iron Pipe set for corner and also being the Point of Beginning of the tract herein described; Thence continue S0°1335W along the East line of said Section 28 to the
SE corner of the NE 1/4of the SE 1/4of the NE 1/4of said section 28 also being the SW corner of the Johnnie Ruth Williams Glover
Tract in Section 27, a distance of 1979.67, to a 1/2 Iron Pipe set for corner; thence run N90°0000W
to the intersection of a line Parallel and 50 feet Easterly of the Centerline of an Exxon Pipeline, a distance of 758.84 feet, to a 1/2 Iron pipe set for corner; thence run N27°3230W Parallel and 50 feet Easterly of the Centerline of an Exxon Pipeline, a distance of 758.84 feet, to a 1/2 Iron Pipe set for corner; thence run N27°3230W Parallel and 50 feet Easterly of the Centerline of said Exxon Pipeline to the South Right-of-Way of Red River Parish Road
No. 604, a distance 2268.57 feet, to a 1/2 Iron Pipe set for corner, said Line Intersects the North line of said
Section 28 at a distance of 2256.58 feet; thence run S88°5508E along the South Right-of-Way of Red River parish Road No. 604, to the Intersection of the North line of said Section 28, a distance of 763.25 feet, to a
1/2 Iron Pipe set for corner; thence run S89°0305E along the South Right-of-Way of Red River Parish Road
No. 604, a distance of 1052.67 feet to the Point of Beginning.

Additional site
information is contained in Topographic Survey Showing Portions of Section 27 & 28, T12N, R10W, Red River Parish, Louisiana, File 001, Rev 6-29-07 below.



---

LOGO



---

APPENDIX K

Craft Wage Rates and Craft Labor Cost Estimate; Craft Labor Hour Target

Craft Wage Rates

The base craft wage labor rates are established based on the Wage and Labor Study for Armistead, Louisiana, March 3, 2008 accomplished by Contractor. A J1 rate of
$25.00 per hour is the basis for the following rate breakdown:



|         |  |         |  |   |  |       
|-------- |  | ------- |  | - |  | ------
|Laborers |  | Helpers
|         |  |         | 
|1        |  | $12.50  |  | 1 |  | $15.50
|2        |  | $13.50  |  | 2 |  | $17.50
|3        |  | $14.50  |  | 3 |  | $19.50
|4        |  | $15.50  |  | 4 |  | $21.50

Operators



|       |  |                                                             
|------ |  | ------------------------------------------------------------
|Light  |  | $21.50 (Bus, Truck, Tractor, Bobcat, Fork Lift)             
|Medium |  | $25.00 (Back Hoe/Track Hoe, Dozer, Boom Truck, R/T Forklift,
|       |  | Rubber Tire/Crawler Crane under 50 tons)                    
|Heavy  |  | $26.00 (Rubber Tire/Crawler Crane over 50 Tons)             
|       |  | $28.00 (Lattice/Long Boom)                                  

Journeyman / Welder **



|        |  |                                                              |  |  |  |  |  |  |  |                                       
|------- |  | ------------------------------------------------------------ |  |  |  |  |  |  |  | --------------------------------------
|J1 \ J2 |  |                                                              |  |  |  |  |  |  |  | $25.00 \ $26.00                       
|J3      |  | $28.00 (Specialty Craft: Heavy Wall Welders, Optical & Laser
|        |  |                                                              |  |  |  |  |  |  |  | Alignment, High Voltage / Termination)



|** | Welders are assigned as Pipe Welder (PW), Tube Welder (TW), or Structural Welder (SW)
|-- | -------------------------------------------------------------------------------------

Foreman



|        |  |                        
|------- |  | -----------------------
|F1 \ F2 |  | $23.00 \ $24.00 (Labor)
|F1 \ F2 |  | $28.50 \ $30.50 (Craft)

General Foreman



|        |  |                        
|------- |  | -----------------------
|G1 \ G2 |  | $25.00 \ $26.00 (Labor)
|G1 \ G2 |  | $29.50 \ $31.50 (Craft)

Hourly Superintendent

HS    $31.75

| |  | 
| |  | 
| |  | 

Craft Hourly Employees shall be classified within the JDE Code and Job Step category as defined in the
BE&K Craft Job Description Guidelines.



---

Gold Key Employees: Selected employees in any craft classification may be further classified as a Gold Key
Employee in accordance with the applicable BE&K Corporate Guidelines. Such employees hourly wage rate shall be increased by 10% above the base wage rates stipulated herein.

Per Diem : $90.00 per day (outside 50 miles) paid 7 days if all scheduled hours worked; or days worked if less than scheduled hours worked

Premium Time:Hourly employees are paid at a rate if 150% base wage rate for all hours worked in excess of 40 hours per pay period. The craft pay period starts on Saturday and ends the following Friday. Premium
pay is defined as the 50% premium paid for hours worked in excess of 40 hours per week.

Hourly Burdens and Benefits:To be billed as stipulated in
Table K-1.

Work Hours per week: 50

Individual
category wage rates are calculated by applying the Table K-1 total markup and the applicable workmans compensation markup to the appropriate base wage rates identified above. An example calculation is provided below:

Example: An concrete craft employee earning $25 per hour (J1), charging 150 hours to the project in a given month( 120 hours Straight Time + 30 hours Overtime) , would be
billed as follows:



|               |  |                                   |  |                                 |  |                           
|-------------- |  | --------------------------------- |  | ------------------------------- |  | --------------------------
|Workhour Cost: |  |                                   |  |                                
|               |  | Straight Time                     |  | $25/hr x150 workhours x 1.349 = |  | $5058.75 (time sheet)     
|               |  | Premium Time                      |  | $12.50 x 30 workhours x 1.239 = |  | $464.63 (time sheet)      
|Workers Comp** |  | ($25 x 150 + $12.50x 30)x .1199 = |  | $494.59                        
|               |  |                                  
|Per Diem       |  | Actual Paid for Applicable Work   |  |                                
|               |  |                                   |  | Periods                         |  | $1890.00 (payroll records)
|               |  |                                   | 
|Total          |  |                                   |  | Add Above =                     |  | $7,907.97                 



|** | see chart on next page
|-- | ----------------------



---

TABLE K-1

The billable markup to be applied to the labor wage rates are as follows:



|                          |  |                 |  |            
|------------------------- |  | --------------- |  | -----------
|                          |  | StraightTime    |  | PremiumTime
|Payroll Taxes             |  |                 |  |            
|FICA                      |  | 7.65%           |  | 7.65%      
|FUI                       |  | 0.80%           |  | 0.80%      
|SUI                       |  | 3.05%           |  | 3.05%      
|Fringes                   |  |                 |  |            
|Craft Travel/Holiday      |  | 1.50%           |  |            
|Health                    |  | 6.00%           |  |            
|Training                  |  | 3.50%           |  |            
|Pension                   |  | 3.50%           |  | 3.50%      
|Insurance                 |  |                 |  |            
|GL                        |  | 3.90%           |  | 3.90%      
|Workmens Comp            |  | Varies byCraft* |  |            
|Safety Supplies           |  | 5.00%           |  | 5.00%      
|Small tools & consumables |  | 0.00%           |  | 0.00%      
|Total Mark up             |  | 34.90%          |  | 23.90%     

Workmens Comp by Craft



|                                  |  |       |   |  |                   |  
|--------------------------------- |  | ----- | - |  | ----------------- | -
|                                  |  |       |   |  | % of WorkBy Craft |  
|Boilermaker                       |  | 8.60  | % |  | 15                | %
|Carpenter                         |  | 24.75 | % |  | 10                | %
|Concrete                          |  | 11.99 | % |  | 5                 | %
|Electrical                        |  | 7.77  | % |  | 20                | %
|Excavation                        |  | 10.50 | % |  | 2                 | %
|Ironworker                        |  | 25.99 | % |  | 15                | %
|Pipefitter                        |  | 6.10  | % |  | 18                | %
|Welder                            |  | 17.85 | % |  | 15                | %
|                                  |  |       |   |  | 100               | %
|Avg Based on Assumed % Craft work |  | 13.80 | % |  |                   |  



---

Craft Labor Cost Estimate.The Craft Labor Cost Estimate is $* The estimate was developed as part of the overall
project cost estimate completed by the Contractor and provided to Owner. The Craft Labor Cost Estimate is based on a J1, all-in, craft wage rate of $* per hour which includes per hour allocations for per diem, burdens and benefits, premium time, and
gold key employee allocation applied to direct labor hours and a $21.25 craft wage rate applied to indirect field staff labor.

Craft Labor Hour Target.The Craft Labor Hour Target is * hours.The target was developed as part of the overall project cost estimate completed by the Contractor and provided to Owner.



---

APPENDIX L

Sales Tax Materials

The following information is provided to facilitate proper documentation and tracking of
applicable state and local sales/use tax paid and / or exempted during the Project to support application for available State of Louisiana and Red River Parish rebates and exemptions. The two programs identified below require Contractor familiarity
and related actions.

1. Enterprise Zone Program

Description: The Louisiana Department of Revenue will accept claims and issue rebates for state sales/use taxes paid on construction materials, machinery, and equipment purchased during the construction period to be used on the
approved site of the project indicated on the Enterprise Zone contract. This program does not authorize any state sales/use tax exemption on any purchase. Neither contract holder (RREP) nor any of its contractors or subcontractors is authorized to
make tax free purchases from vendor under this program. (See Attachment 1)

Qualifying items: Attachment 2 provides a description and associated
requirements for qualifying items.

Contractor requirements:



| |  |  | Complete the appropriate schedules from Attachment 3 for qualifying items purchased during construction.
| | - |  | --------------------------------------------------------------------------------------------------------



| |  |  | Submit completed schedules to Owner with each monthly application for payment for purchases made during the payment period.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------



| |  |  | Provide legible copies of each invoice on the submitted schedules.
| | - |  | ------------------------------------------------------------------



| |  |  | Provide a certification that the 4% Louisiana State sales/use tax has been paid on the items listed on the schedules.
| | - |  | ---------------------------------------------------------------------------------------------------------------------

2. Manufacturing Machinery and Equipment State Sales Tax Exclusion

Description: The Louisiana Department of Revenue provides (and Owner is eligible) for the sales tax exclusion for manufacturing machinery and equipment (the MM&E Exemption) as described in Attachment 4. Until July 1, 2009,
68% of the sales price or cost price of eligible equipment is not subject to state sales or use tax. Beginning July 1, 2009, 100% of the sales price or cost price of eligible equipment is not subject to state sales or use tax. Owner may
designate Contractor and subcontractors as its agent for purposes of purchasing eligible machinery and equipment (Attachment 5). Under such agency designations, ownership of eligible equipment vests in Owner and the Owners exemption
certificate (Attachment 6) may be used by Contractor and subcontractors in connection with the purchase of eligible machinery and equipment that will be incorporated into the Work. The agency designations and Owners exemption certificates may
not be used to make tax reduced or non-taxable purchases or uses of any property that will not become part of the Work. If a vendor charges tax in excess of that required under state law, Contractor shall assist Owner on seeking refunds of such
overpaid taxes.



|                            |  |       
|--------------------------- |  | ------
|Privileged and Confidential |  | Page 1

Red River Environmental Products Engineering, Procurement, and Construction Agreement



---

Qualifying items: Attachment 4 provides a description and associated requirements for qualifying items.

Contractor requirements:



| |  |  | Complete the appropriate schedules from Attachment 7 for qualifying items purchased during construction.
| | - |  | --------------------------------------------------------------------------------------------------------



| |  |  | Submit completed schedules to Owner with each monthly application for payment for purchases made during the payment period.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------



| |  |  | Provide legible copies of each invoice on the submitted schedules.
| | - |  | ------------------------------------------------------------------



| |  |  | Provide a certification that the non-exempt portion of 4% Louisiana State and local sales/use tax has been paid on the items listed on the schedules.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------

Attachments:



|1. | Enterprise Zone Program Fact Sheet
|-- | ----------------------------------



|2. | Enterprise Zone Program Sales/Use tax Rebate Guidelines
|-- | -------------------------------------------------------



|3. | Enterprise Zone Accounting Schedules for Taxes Paid
|-- | ---------------------------------------------------



|4. | Manufacturing Machinery and Equipment Exemption Program Guidelines
|-- | ------------------------------------------------------------------



|5. | Manufacturing Machinery and Equipment Exemption Certificate
|-- | -----------------------------------------------------------



|6. | Louisiana Dept of Revenue Designation of Mandate
|-- | ------------------------------------------------



|7. | Manufacturing Machinery and Equipment Exemption Accounting Schedule
|-- | -------------------------------------------------------------------



|                            |  |       
|--------------------------- |  | ------
|Privileged and Confidential |  | Page 2

Red River Environmental Products Engineering, Procurement, and Construction Agreement



---

Attachment 1

Enterprise Zone Program Fact Sheet



|                            |  |       
|--------------------------- |  | ------
|Privileged and Confidential |  | Page 3

Red River Environmental Products Engineering, Procurement, and Construction Agreement



---

LOUISIANA

ECONOMIC

DEVELOPMENT

ENTERPRISE ZONE PROGRAM

THE FACTS

The Enterprise Zone (EZ) Program is a JOBS incentive program that creates Louisiana Income and/or Franchise Tax job tax credits (JTC) to a business hiring at least 35%
of their net new jobs from one of four targeted groups. A business must create permanent net new jobs at the EZ site. A business is not required to be located in an EZ. Only if the job requirement is met, sales/use tax rebates or a
refundable investment tax credit may be available. EZs are areas that the residents receiving public assistance is high. The Board of Commerce and Industry (Board) approves EZ applications. The Louisiana Economic Development (LED), Business
Incentives Services (BI) administers this Program.

BI must receive an ADVANCE NOTIFICATION Form and a $100 fee PRIOR to hiring, starting project/
construction, receiving purchases, or installing equipment. Any activity prior to the receipt of the Advance Notification by BI is not eligible.

ELIGIBILITY

A. Businesses engaged in gaming or churches are not eligible.

Residential developments are eligibleif All of the following requirements are met:

1. Bea multi-family residential development, minimum of 20 units and a maximum of 100 units on a contiguous site

2. Located in 2005 Gulf Opportunity Zone or Rita Gulf Opportunity Zone

3. Create required number of permanent jobs

4. Advance Notification must be filed prior to January 1,
2008

B. Must create a minimum number of permanent net new jobs- at the EZ site and 35% of net new jobs must meet at least one of the four
Certification Requirements (Requirements). These jobs must be created from Project/Construction Start Date. Either:

Increase your current
workforce by 10% (minimum of 1) within the first 12 months

OR

Create a minimum of 5 net new jobs within the first 24 months.

The jobs must be filled with: Louisiana
resident, someone living in LA at least 30 consecutive days prior to being hired.

OR

US citizen that becomes domiciled in Louisiana within 60 days after employment.



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BENEFITS

A. TAX
CREDITS

1. A one time $2,500 JTC is generated for each certified net new job created. A business with NAICS for aerospace or an automobile
parts manufacturer may qualify for a one time $5,000 JTC.

2. JTC are used to satisfy Louisiana Income and/or Franchise Tax liabilities. LLC
and Subchapter S corporations may pass the JTC to the owners listed on the EZ contract. The credits may be carried forward up to 10 years from the year the JTC were earned.

B. SALES/USE TAX REBATE or INVESTMENT TAX CREDIT

Louisiana Sales/Use Tax paid on materials, furniture,
fixtures, machinery and equipment purchased and used exclusively on the EZ site. These items must be delivered during the Project/Construction Period. The rebate period cannot to exceed 24 months. Local sales/use tax is not available with the
Investment Tax Credit option.

OR

1.5% Refundable Investment Tax Credit can be earned. The Refundable Investment Tax Credit (ITC) is a credit equal to 1.5% of capitalized investment (for Federal Income Tax purposes) minus cost of land, interest, existing building
acquisition costs, and-the portion of manufacturing equipment that is exempt under Sales/Use tax laws. The credit is earned the year the project is placed in service. The ITC may not be claimed until the Project Completion Report is executed.
Local sales/use tax is not available with the Investment Tax Credit option.

APPLICATION PROCEDURES

A. Advance Notification Form and $100 fee filed with the BIPRIOR to Project/Construction Start Date.

B. Application Form and fee must be filed within 90 days after the completion of Project/Construction. The Application Fee is a minimum of $200 and maximum of $5,000.

C. Provide a copy Louisiana Department of Revenue Sales/Use Tax Certificate with this project address.

D. After the Board approval, a 60-month contract is entered into between the Board and the applicant. The Effective Date of your contract is the Start Date reported on the approved Application.

E. An Inspection/Audit Affidavit Form must be submitted with a $100 fee, within six months after completion of project or returned with the signed original contract,
whichever is later.

F. A Project Completion Report (PCR) must be submitted within six months after completion of project or returned with the signed
original contract, whichever is later. On the PCR, the company will state if they will seek the Louisiana Sales/Use Tax Rebate, the Investment Tax Credit or neither.

JOB CERTIFICATION35%0 of all jobs generating JTC must meet one of the following:

A. Residency

1. If the contract holder is located in an urban parish (2000 population over 75,000), the employee must live in an EZ in the state.



---

OR

2. If the contract holder is located in a rural parish and not located in an EZ, the employee must live in an EZ in the state.

OR

3. If the contract holder is located in a Rural parish (2000 population 75,000 or less), and located in an EZ, the
employee may live anywhere in the parish the company is located.

OR

4. If the contract holder is located in an Economic Development Zone (EDZ), the employee may live anywhere in the parish the company is located.

B. Receiving some form of public income assistance may include WIC, FTAP, using LDOL by listing your jobs and hiring a LDOL referral, (employment
assistance), attended a technical college within the six months prior to being hired.

C. Lacking basic skills. A person below the 9th grade proficiency in
reading, writing, or math.

D. Physically challenged.

For
additional information contact:



|                                                              |  |                                                               |  |          |  |                         
|------------------------------------------------------------- |  | ------------------------------------------------------------- |  | -------- |  | ------------------------
|Marylyn Friedkin                                              |  | Roshonda Hanible                                             
|Louisiana of Economic Development Business
Incentive Services |  | Louisiana of Economic Development
Business Incentive Services
|P. O. Box 94185, Baton Rouge, LA 70804-9185                   |  | P. O. Box 94185, Baton Rouge, LA 70804-9185                  
|1051 North Third Street, Baton Rouge, LA 70802                |  | 1051 North Third Street, Baton Rouge, LA 70802               
|                                                              |  |                                                               | 
|Phone:                                                        |  | 225.342.9228                                                  |  | Phone:   |  | 225.342.5382            
|Fax:                                                          |  | 225.342.0142                                                  |  | Fax:     |  | 225.342.0142            
|Email:                                                        |  | Marylyn.Friedkin@la.gov                                       |  | Email:   |  | Roshonda.Hanible@,la.gov
|On line:                                                      |  | www.LouisianaForward.com                                      |  | On line: |  | www.LouisianaForward.com



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Attachment 2

Enterprise Zone Program Sales/Use Tax Rebate Guidelines



|                                                                                      |  |       
|------------------------------------------------------------------------------------- |  | ------
|Privileged and Confidential                                                           |  | Page 4
|Red River Environmental Products Engineering, Procurement, and Construction Agreement



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State of Louisiana

Department of Revenue

Enterprise Zone Program

Louisiana State Sales/Use Tax Rebate

LOUISIANA REVISED STATUTE 51:1787 (INCENTIVES)

The Department of Revenue will accept claims and issue rebates for Louisiana State Sales/Use taxes paid on construction materials, machinery, and.
equipment purchased during the construction period to be used on the approved site of the project indicated on the Enterprise Zone contract. These claims will be accepted only after this department receives a copy of the signed contract from the
Department of Economic Development.

This contract does not authorize any Louisiana State Sales/Use tax exemption on any purchases. Neither the
contract holder nor any of its contractors or subcontractors is authorized to make tax free purchases from vendors.

The Claim for Rebate of Louisiana
State Sales/Use Taxes Paid Form must be submitted no later than six months after the projects completion or six months after the date of the governors signature on the contract, whichever is later. However, effective August 15,
2003, contract holders may be granted a 30 day extension to file the Claim for Rebate application provided the Department of Revenue receives the request for extension prior to the expiration date for filing the original application (six months
after the projects completion or six months after the date of the governors signature on the contract, whichever is later). The Department has also been given the authority to grant an additional extension of time, not to exceed 60 days,
if the contract holder can show reasonable cause for granting such extension. Request for an additional extension must be received by the Department of Revenue prior to the expiration of the 30-day extension of time to file. The following must
accompany the claim form:

1. Appropriate schedules, as explained on Item III of the attached Information Sheet, listing materials,
machinery, and equipment with vendor names, invoice numbers, delivery dates, purchase amounts, Louisiana State Sales/Use tax paid in each purchase, and a brief description of each item. The Louisiana State Sales/Use tax is levied at the rate of 4%
on purchases made in or delivered to Louisiana.

2. A certification stating the materials, machinery, and equipment included in the Claim
for Rebate of Louisiana State Sales/Use Taxes Paid will be or have been delivered to and used on the site in the approved Enterprise Zone project. Louisiana State Sales/Use taxes paid on construction equipment, leases/rentals, and consumables that
are not actually incorporated into the Enterprise Zone project are not eligible.

3. A certification stating that the 4% Louisiana State
Sales/Use taxes have been paid on the items listed.

4. A list of all contractors and subcontractors including addresses and contract
amounts.

5. A copy of each invoice totaling $15,000 and greater. A description of the purchased item(s) must be listed. on each invoice.

Failure to submit this information may result in processing delays.

Included in this packet are forms and/or examples of

Information Sheet

Policy in Relation to Lease Agreements

Claim for Rebate of Louisiana State Sales/Use Taxes Paid

Rebate Worksheet

Explanation of Disallowance Codes Schedules A, B, C, and CA

If you have any questions regarding your Claim for Rebate of Louisiana State Sales/Use Taxes Paid, please contact the Office Audit Division at 225-219-2270.



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State of Louisiana

Department of Revenue

Enterprise Zone Program

Louisiana State Sales/Use Tax Rebate

INFORMATION SHEET

I. Qualifying Items

A. Materials that originate from
a contractor/subcontractors inventory and are located permanently at the Enterprise Zone.project site during the Project/Construction Period are eligible for sales/use tax rebates. In order for rebates to be issued on property withdrawn from
inventory, the contractor/subcontractor must have in place financial accounting, property accounting, and. sales/use tax accrual and payment systems to enable the LDOR to verify that Louisiana sales or use taxes were paid on the property for which
rebate is claimed.

B. Machinery and/or equipment purchased for the Enterprise Zone project site during the Project/Construction Period are
eligible for sales/use tax rebates, provided. that the machinery and equipment are located permanently at the enterprise zone site, are owned by the entity having the enterprise zone contract with the state, and. are expected to remain at the
enterprise zone site after construction is completed for the expected useful life of the completed structure or for the expected useful life of the machinery and equipment, whichever duration is shorter.

C. Machinery and or equipment transferred into Louisiana for the Enterprise Zone project site during the Project/Construction Period are eligible for
sales/use tax rebates, provided that the machinery and equipment are located permanently at the enterprise zone site, are owned by the entity having the enterprise zone contract with the state, and are expected to remain at the enterprise zone site
after construction is completed for the expected useful life of the completed structure or for the expected useful life of the machinery and equipment, whichever duration is shorter.

D. Software purchased, capitalized, and used by the applicant primarily at the Enterprise Zone project site during the Project/Construction Period are
eligible for sales/use tax rebates.

E. Lease-purchases may be eligible for a sales/use tax rebate upon LDORs approval. The property
acquired through lease-purchase must be located permanently at the enterprise zone site, must be owned by the entity having the enterprise zone contract with the state, and must remain at the enterprise zone site after construction is completed for
the expected useful life of the completed structure or for the expected useful life of the leased-purchased property, whichever duration is shorter. A copy of the lease-purchase agreement must be submitted with the Claim for Rebate Request to LDOR,
Office Audit Division.

II. Non Qualifying Items

A. Small hand tools (wrenches, screwdrivers, paint brushes, etc.); safety equipment (goggles, gloves, respirators, glasses, etc.); blue-prints; and photographs.

B. Spare parts and repairs to equipment will be disallowed, however, replacement parts that are acquired at the time of equipment purchase are acceptable.

C. Purchases made by contractors that do not become a component of the building or passed on. to the contract holder.

D. Vehicles licensed for road use.



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Enterprise Zone Program

Page 2

E. Consumable items are not eligible for sales/use tax rebate. A partial listing of ineligible items are: per diem, labor,
service contracts, storage, freight, radios, laptop computers, utilities, permits and fees, office supplies, construction consumables, blades, drill bits, PVC sheeting, tape, gloves, dust masks, and all leases and rentals.

F. Ineligible items listed on Schedule A of the Enterprise Zone Contract.

III. Rebate Request Should Be Formatted In the Following Manner

A. Schedule A should
list items purchased by the contract holder and no Louisiana State Sales tax was paid on the purchases.

1 The contract holder should have
accrued and paid. the Louisiana State Use tax directly to the Department of Revenue. Please note, if it is determined that the Use tax was not remitted, then tax, interest, and penalties must be paid prior to submission of the rebate claim. If not,
interest and penalties on those accruals will be deducted from the rebate.

2. This schedule should list vendor name, vendor invoice number,
delivery date, purchase amount, a brief description of each item, tax period on which the items were accrued, and the amount of Use tax paid.

B. Schedule B should list items purchased by the contract holder and the amount of Louisiana State Sales tax that was paid to vendor(s).

1. This schedule should contain vendor name, vendor invoice number, delivery date, each purchase amount, amount of Louisiana State Sales tax paid on each purchase, and a brief description of each item.

C. Schedule C should list items purchased by the contractor and the amount of Louisiana State Sales tax that was paid to vendor(s).

1. This schedule should list the contractor name, vendor name, vendor invoice number, delivery date, each purchase amount, amount of
Louisiana State Sales tax paid on purchase, and a brief description of each item.

D. Schedule CA should list items purchased
by the contractor and no Louisiana State Sales tax was paid on the purchases.

1. The contractor should have accrued and paid the Louisiana
State Use tax directly to the Department of Revenue.

2. This-schedules-should list-contractor-name, vendor name, vendor invoice-number
delivery-date, each- purchase-amount-brief description of each item, the contractors Louisiana Sales/Use tax account number, tax period on which the items were accrued, and the amount of Use tax paid

For all Schedules:



| |  |  | Delivery Date means date when materials were delivered to the Enterprise Zone Project Site
| | - |  | --------------------------------------------------------------------------------------------



| |  |  | Subtotal each page
| | - |  | ------------------

E.
Purchases on Schedule A and/or Schedule CA should be listed in chronological order by tax periods.

F. Purchasers claiming items taken out
of inventory must be able to verify that the Louisiana State Sales tax was paid or accrued on each item.



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Enterprise Zone Program

Page 3

G. Submit a legible copy of all invoices $15,000 and greater. All invoices must be maintained should additional
information be required during the audit of your claim by this department.

H. Credit will not be given on progress payments until actual
delivery of the tangible property to the approved Enterprise Zone site. All progress payment invoices (100%) must be submitted to substantiate taxes paid on this property.

I. Credits taken on any schedule must be accompanied by an explanation. If the credit is from a previous claim, indicate the date the claim was
submitted, and identify on which schedule the invoice number and amount were claimed.

J. Resubmission of information for disallowed items
should be submitted separately from any new Claim for Rebate of Taxes Paid.

1. A copy of the disallowance schedule from
this department should be included with the resubmission.

2. Do not duplicate previously rebated items.

3. Resubmission should occur within 30 days from the date the original rebate check was issued

K. Submit a completed Power of Attorney form with rebate request if submission is by someone other than the Contract Holder.

L. Name on Sales/Use Tax registration certificate must match the name on the approved Enterprise Zone Contract.



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Attachment 3

Enterprise Zone Accounting Schedules for Taxes Paid



---

Name of Contract Holder:

Contract Construction Period:

Enterprise Zone Contract #:

Louisiana Dept. of Revenue Sales/Use Tax Account #:



|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          |   |           |  |             |          |   |         
|--------------------------------------------------------------------- |  | ------------------------ |  | ------------------------ | --------- | -------------------- | --------- | ----------- | -------- | --------- | ----------- | -------- | - | --------- |  | ----------- | -------- | - | --------
|Schedule A - Purchased by Contract Holder and No Taxes Paid to
Vendor |  | 4% State Use Tax Accrued |  | 4% Local Use Tax Accrued
|Vendor Name                                                           |  | Vendorlnvocie #          |  | DeliveryDate             |           | PurchaseAmount (Net) |           | Description |          | TaxPeriod |             | Amount   |   | TaxPeriod |  | Amount     
|Replace Top Two Lines                                                 |  | 9420                     |  | 2/14/01                  |           | $                    | 2,060.00  |             | Concrete |           | February-01 |          | $ | 82.40     |  | February-01 |          | $ | 1,476.92
|Replace Top Two Lines                                                 |  | 127355                   |  | 3/21/03                  |           | $                    | 24,413.47 |             | Windows  |           | March-03    |          | $ | 976.54    |  | March-03    |          | $ | 1,507.32
|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          | $ | 0.00      |  |             |          | $ | 0.00    
|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          | $ | 0.00      |  |             |          | $ | 0.00    
|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          | $ | 0.00      |  |             |          | $ | 0.00    
|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          | $ | 0.00      |  |             |          | $ | 0.00    
|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          | $ | 0.00      |  |             |          | $ | 0.00    
|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          | $ | 0.00      |  |             |          | $ | 0.00    
|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          | $ | 0.00      |  |             |          | $ | 0.00    
|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          | $ | 0.00      |  |             |          | $ | 0.00    
|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          | $ | 0.00      |  |             |          | $ | 0.00    
|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          | $ | 0.00      |  |             |          | $ | 0.00    
|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          | $ | 0.00      |  |             |          | $ | 0.00    
|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          | $ | 0.00      |  |             |          | $ | 0.00    
|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          | $ | 0.00      |  |             |          | $ | 0.00    
|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          | $ | 0.00      |  |             |          | $ | 0.00    
|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          | $ | 0.00      |  |             |          | $ | 0.00    
|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          | $ | 0.00      |  |             |          | $ | 0.00    
|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          | $ | 0.00      |  |             |          | $ | 0.00    
|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          | $ | 0.00      |  |             |          | $ | 0.00    
|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          | $ | 0.00      |  |             |          | $ | 0.00    
|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          | $ | 0.00      |  |             |          | $ | 0.00    
|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          | $ | 0.00      |  |             |          | $ | 0.00    
|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          | $ | 0.00      |  |             |          | $ | 0.00    
|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          | $ | 0.00      |  |             |          | $ | 0.00    
|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          | $ | 0.00      |  |             |          | $ | 0.00    
|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          | $ | 0.00      |  |             |          | $ | 0.00    
|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          | $ | 0.00      |  |             |          | $ | 0.00    
|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          | $ | 0.00      |  |             |          | $ | 0.00    
|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          | $ | 0.00      |  |             |          | $ | 0.00    
|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          | $ | 0.00      |  |             |          | $ | 0.00    
|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          | $ | 0.00      |  |             |          | $ | 0.00    
|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          | $ | 0.00      |  |             |          | $ | 0.00    
|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          | $ | 0.00      |  |             |          | $ | 0.00    
|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          | $ | 0.00      |  |             |          | $ | 0.00    
|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          | $ | 0.00      |  |             |          | $ | 0.00    
|                                                                      |  |                          |  |                          |           |                      |           |             |          |           |             |          | $ | 0.00      |  |             |          | $ | 0.00    
|TOTAL                                                                 |  |                          |  | $                        | 26,473.47 |                      |           |             | TOTAL    |           | $           | 1,058.94 |   | TOTAL     |  | $           | 2,984.24



---

Name of Contract Holder:

Contract Construction Period:

Enterprise Zone Contract #:

Louisiana Dept. of Revenue Sales/Use Tax Account #:



|                                                                   |  |                 |  |              |          |                      |          |                        |   |                        |  |             |  |                                        
|------------------------------------------------------------------ |  | --------------- |  | ------------ | -------- | -------------------- | -------- | ---------------------- | - | ---------------------- |  | ----------- |  | ---------------------------------------
|Schedule B - Purchased by Contract Holder and Taxes Paid to
Vendor
|Vendor Name                                                        |  | VendorInvoice # |  | DeliveryDate |          | PurchaseAmount (Net) |          | 4% State SalesTax Paid |   | 4% Local SalesTax Paid |  | Description
|Replace top two lines                                              |  | 9755            |  | 7/1/98       |          | $                    | 1,000.00 |                        | $ | 40.00                  |  |             |  | Very specific equipment listing here   
|Replace top two lines                                              |  | 11953           |  | 8/3/98       |          | $                    | 17.74    |                        | $ | 0.71                   |  |             |  | Extremely specific listing of equipment
|                                                                   |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                                        
|                                                                   |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                                        
|                                                                   |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                                        
|                                                                   |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                                        
|                                                                   |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                                        
|                                                                   |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                                        
|                                                                   |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                                        
|                                                                   |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                                        
|                                                                   |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                                        
|                                                                   |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                                        
|                                                                   |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                                        
|                                                                   |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                                        
|                                                                   |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                                        
|                                                                   |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                                        
|                                                                   |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                                        
|                                                                   |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                                        
|                                                                   |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                                        
|                                                                   |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                                        
|                                                                   |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                                        
|                                                                   |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                                        
|                                                                   |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                                        
|                                                                   |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                                        
|                                                                   |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                                        
|                                                                   |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                                        
|                                                                   |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                                        
|                                                                   |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                                        
|                                                                   |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                                        
|                                                                   |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                                        
|                                                                   |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                                        
|                                                                   |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                                        
|                                                                   |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                                        
|                                                                   |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                                        
|TOTAL                                                              |  |                 |  | $            | 1,017.74 |                      | $        | 40.71                  |   |                        |  |            



---

Name of Contract Holder:

Contract Construction Period:

Enterprise Zone Contract #:



|                                                              |  |                         |  |                 |  |              |          |                      |          |                        |   |                        |  |             |  |                       
|------------------------------------------------------------- |  | ----------------------- |  | --------------- |  | ------------ | -------- | -------------------- | -------- | ---------------------- | - | ---------------------- |  | ----------- |  | ----------------------
|SCHEDULE C - Purchased by Contractor and Taxes Paid to
Vendor
|Contractor Name                                               |  | Vandor Name             |  | VendorInvoice # |  | DeliveryDate |          | PurchaseAmount (Net) |          | 4% State SalesTax Paid |   | 4% Local SalesTax Paid |  | Description
|Replace This Line                                             |  | This Line Gets Replaced |  | 71019           |  | 3/5/08       |          | $                    | 1,542.30 |                        | $ | 61.69                  |  |             |  | Hinges for steel doors
|                                                              |  |                         |  |                 |  |              |          | $                    | 0.00     |                        | $ | 0.00                   |  |             |  |                       
|                                                              |  |                         |  |                 |  |              |          | $                    | 0.00     |                        | $ | 0.00                   |  |             |  |                       
|                                                              |  |                         |  |                 |  |              |          | $                    | 0.00     |                        | $ | 0.00                   |  |             |  |                       
|                                                              |  |                         |  |                 |  |              |          | $                    | 0.00     |                        | $ | 0.00                   |  |             |  |                       
|                                                              |  |                         |  |                 |  |              |          | $                    | 0.00     |                        | $ | 0.00                   |  |             |  |                       
|                                                              |  |                         |  |                 |  |              |          | $                    | 0.00     |                        | $ | 0.00                   |  |             |  |                       
|                                                              |  |                         |  |                 |  |              |          | $                    | 0.00     |                        | $ | 0.00                   |  |             |  |                       
|                                                              |  |                         |  |                 |  |              |          | $                    | 0.00     |                        | $ | 0.00                   |  |             |  |                       
|                                                              |  |                         |  |                 |  |              |          | $                    | 0.00     |                        | $ | 0.00                   |  |             |  |                       
|                                                              |  |                         |  |                 |  |              |          | $                    | 0.00     |                        | $ | 0.00                   |  |             |  |                       
|                                                              |  |                         |  |                 |  |              |          | $                    | 0.00     |                        | $ | 0.00                   |  |             |  |                       
|                                                              |  |                         |  |                 |  |              |          | $                    | 0.00     |                        | $ | 0.00                   |  |             |  |                       
|                                                              |  |                         |  |                 |  |              |          | $                    | 0.00     |                        | $ | 0.00                   |  |             |  |                       
|                                                              |  |                         |  |                 |  |              |          | $                    | 0.00     |                        | $ | 0.00                   |  |             |  |                       
|                                                              |  |                         |  |                 |  |              |          | $                    | 0.00     |                        | $ | 0.00                   |  |             |  |                       
|                                                              |  |                         |  |                 |  |              |          | $                    | 0.00     |                        | $ | 0.00                   |  |             |  |                       
|                                                              |  |                         |  |                 |  |              |          | $                    | 0.00     |                        | $ | 0.00                   |  |             |  |                       
|                                                              |  |                         |  |                 |  |              |          | $                    | 0.00     |                        | $ | 0.00                   |  |             |  |                       
|                                                              |  |                         |  |                 |  |              |          | $                    | 0.00     |                        | $ | 0.00                   |  |             |  |                       
|                                                              |  |                         |  |                 |  |              |          | $                    | 0.00     |                        | $ | 0.00                   |  |             |  |                       
|                                                              |  |                         |  |                 |  |              |          | $                    | 0.00     |                        | $ | 0.00                   |  |             |  |                       
|                                                              |  |                         |  |                 |  |              |          | $                    | 0.00     |                        | $ | 0.00                   |  |             |  |                       
|                                                              |  |                         |  |                 |  |              |          | $                    | 0.00     |                        | $ | 0.00                   |  |             |  |                       
|                                                              |  |                         |  |                 |  |              |          | $                    | 0.00     |                        | $ | 0.00                   |  |             |  |                       
|                                                              |  |                         |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                       
|                                                              |  |                         |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                       
|                                                              |  |                         |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                       
|                                                              |  |                         |  |                 |  |              |          |                      |          |                        | $ | 0.00                   |  |             |  |                       
|TOTAL                                                         |  |                         |  |                 |  | $            | 1,542.36 |                      | $        | 61.69                  |   |                        |  |            



---

Name of Contract Holder:

Contract Construction Period:

Enterprise Zone Contract #:



|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        |          |           |  |        |  |   |         
|---------------------------------------------------------------------------------------------------------------------------------- |  | ----------------------------------------------------------------------- | -------- | ----------------------- | ----- | -------------- | -------- | ----------- | ----------- | --------- | ------ | ------ | -------- | --------- |  | ------ |  | - | --------
|                                                                                                                                   |  | Schedule CA - Purchased by Contractor actor and No Taxes Paid to Vendor |          |                         |       |               
|Contractor Name: Write in Contractors name here Louisiana Dept. of Revenue Sales/Use Tax Account #: Write in Tax Acct Number here |  | 4% State Use TaxAccrued                                                 |          | 4% Local Use TaxAccrued
|Vendor Name                                                                                                                        |  | VendorInvoice #                                                         |          | DeliveryDate            |       | PurchaseAmount |          | Description |             | TaxPeriod |        | Amount |          | TaxPeriod |  | Amount
|Type over first two lines                                                                                                          |  | 2564452001                                                              |          | 10/20/98                |       | $              | 660.28   |             | switches    |           | Oct-98 |        | $        | 22.4      |  | Oct-98 |  | $ | 1,442.76
|Type over first two lines                                                                                                          |  | 2564452002                                                              |          | 11/22/98                |       | $              | 2,524.73 |             | steel beams |           | Nov-98 |        | $        | 100.99    |  | Nov-98 |  | $ | 1,444.00
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|                                                                                                                                   |  |                                                                         |          |                         |       |                |          |             |             |           |        |        | $        | 0.00      |  |        |  | $ | 0.00    
|TOTAL                                                                                                                              |  | $                                                                       | 3,085.01 |                         | TOTAL |                | $        | 123.40      |             |           |        | $      | 2,886.76



|                                                                                      |  |       
|------------------------------------------------------------------------------------- |  | ------
|Privileged and Confidential                                                           |  | Page 5
|Red River Environmental Products Engineering, Procurement, and Construction Agreement



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Attachment 4

Manufacturing Machinery and Equipment Exemption Program Guidelines



|                                                                                      |  |       
|------------------------------------------------------------------------------------- |  | ------
|Privileged and Confidential                                                           |  | Page 6
|Red River Environmental Products Engineering, Procurement, and Construction Agreement



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NOTICE OF INTENT

Department of Revenue

Policy Services Division

Sales and Use Tax Exclusion for Manufacturing

Machinery and Equipment

(LAC 61:1.4301)

Under the authority of R.S. 47:301 and R.S. 47:1511 and in accordance with the provisions of the Administrative Procedure Act, R.S. 49:950 et seq., the Department of Revenue, Policy Services Division, proposes to
amend LAC 61:1.4301 relative to the definitions of cost price, lease or rental, and sales price for sales tax purposes.

Act
1 of the 2004 First Extraordinary Session provides exclusions from state sales and use tax for the purchase, lease or rental, and use of machinery and equipment used predominately and directly to manufacture tangible personal property or
produce, process, and store food, fiber, or timber for sale. These amendments provide guidance regarding the definition of cost price under R.S. 47:301(3)(i), lease or rental under R.S. 47:301(28)(a), and sales price under R.S.
47:301(13)(k) as those terms relate to the purchase of machinery and equipment used predominantly and directly in the manufacturing of tangible personal property for sale or the production, processing, and storing of food, fiber, or timber
for sale.

Title 61

REVENUE AND TAXATION

Part I. Taxes Collected and Administered by the

.Secretary of Revenue

Chapter 43. Sales and Use
Tax

§4301. Definitions

Cost Price  ̈

a. - g.

h. Under R.S. 47:301(3)(i), machinery and equipment is excluded from cost price if the property is used to manufacture tangible personal
property for sale to another or is used directly in the production, processing, and storing of food, fiber, or timber for sale; is used predominantly and directly in the manufacturing process or in the actual manufacturing for agricultural
purposes; and is eligible for depreciation for federal income tax purposes. The exclusion is subject to a phase-in between July 1, 2004, and June 30, 2010. The exclusion applies only to manufacturing businesses that have been assigned, by
the Louisiana Departmentofabor,. NDrthArner-ican-AndustriaL Classification System (NAICS) codes within the agricultural, forestry, fishing, and hunting Sector 11 or the manufacturing Sectors 31 through 33 as they existed in 2002. Businesses
that are not registered with the Louisiana Department of Labor or that have not been assigned these NAICS codes are not eligible to claim this exclusion. The exclusion applies to state sales or use tax and local sales or use tax if the
political subdivision has adopted this exclusion by ordinance.

i.(a). Manufacturing-putting raw materials through a
series of steps that brings about a change in their composition or physical nature in order to make a new and different item of tangible personal property that will be sold to another. The manufacturing process begins when a raw sale has been placed
into the packaging that will normally be delivered to the final consumer.

(b). Manufacturing for Agricultural
Purposes- activities involved in the production, process material is introduced into the first machine or item of equipment that begins the change of the composition or physical nature of the raw materials into another product. The manufacturing
process ends when the final product for processing, and storing of food, fiber and timber for sale. Manufacturing for agricultural purposes begins when the soil or field is prepared for planting and ends when the harvested product is removed from
the farm.

ii.(a). For machinery or equipment used to manufacture tangible personal property for sale, used
predominantly means that more than 50 percent of the propertys use is in the process of causing a change in the composition or physical nature of the raw materials that are to become a final product for sale.

(b). For machinery or equipment used to produce, process, and store food, fiber, or timber for sale, used predominantly means the
property is used more than 50 percent of the time in the production, processing, and storing of food, fiber, or timber for sale. Equipment that remains idle between growing seasons is considered used for the production, processing, and storing of
food, fiber, or timber during that time.

iii.(a). For a manufacturer of tangible personal property for sale, used
directly describes the manner in which the machinery or equipment used in a plant facility alters the physical characteristics of the product during the manufacturing process. Used directly means that the machinery and equipment must have an
immediate effect upon those products manufactured for ultimate sale to another person. Machinery and equipment used to manufacture intermediate products for internal use, such as manufacturing tools, internally consumed energy, and processing
chemicals do not qualify for the exclusion.

(b). For a manufacturer of food, fiber, or timber for sale, used
directly describes the manner in which the machinery or equipment is involved in the manufacturing for agricultural purposes. Used directly means that the machinery and equipment must have an immediate effect upon the production,
processing, or storing of food, fiber, or timber. Examples of machinery and equipment used directly in manufacturing for agricultural purposes include machinery and equipment for planting, cultivating, fertilizing, spraying, harvesting,
producing, processing, and storing of food, fiber, or timber for sale. This exclusion includes materials used in the construction of facilities used to-store-the food, fiber-or-timber-for-sale. Machinery-and-equipment used directly in
manufacturing for agricultural purposes does not include facilities used to store equipment.



---

iv. Eligible for Depreciation-the machinery or equipment is a principle component
of the manufacturing process and has a substantially useful life beyond the taxable year as described in Treas. Reg. §1.263(a)-2, although it does not have to be capitalized and depreciated to qualify for exclusion. Examples of property
considered eligible for depreciation are robotic welding machines in a vehicle manufacturing plant; pumps, valves, and compressors in a petrochemical plant; and tractors, trailers, and harvesting equipment on a commercial farm. Examples of items
that do not qualify include nuts, bolts, gaskets, lubricants, filters, and fuel.



---

The following also qualify for exclusion as manufacturing machinery and equipment:

(a). computers and software that control, communicate with or control other computer systems that control, or control heating or cooling
systems for machinery or equipment that manufactures tangible personal property for sale. Computers and software used for inventory and accounting systems or that control non-qualifying machinery and equipment do not qualify for the
exclusion;

(b). machinery and equipment necessary to control pollution at a plant facility where pollution is produced by
the manufacturing operation. For purposes of this exclusion, machinery and equipment necessary to control pollution includes equipment that reduces the volume, toxicity, or potential hazards of the waste products generated by the manufacturing
process or transforms the waste product for reuse in the manufacturing process or use in another process; and

(c).
machinery and equipment used to test or measure raw materials, the property undergoing manufacturing, or the finished product, when such test or measurement is a necessary part of the manufacturing process. This includes machinery and equipment used
to test the quality or quantity of the product for sale before, during, or after the manufacturing process.

vi. Persons
acting as mandataries (agents) of manufacturers can claim the exclusion on purchases of qualifying machinery and equipment that will ultimately be used by a business assigned an eligible NAICS code by the Department of Labor. The mandatary must
obtain the manufacturers exclusion Form R-1071 and provide it, with a copy of the contract of mandate or the Departments Form R-1072 (Manufacturers Designation of Mandate), to the seller at the time of purchase.

vii. Repairs to manufacturing machinery and equipment to keep the property in an ordinarily efficient working order generally do not
qualify for exclusion under R.S. 47:301(3)(i) because neither the labor nor the materials used in these repairs are eligible for depreciation for federal income tax purposes. However, the purchase of tangible personal property used in the
repair would qualify for the exclusion provided the property is a major component of the manufacturing process and has a substantially useful life beyond the current period.

viii. Charges for labor and materials that are classified as capital improvements under Internal Revenue Service Regulations may be
excluded as follows.

(a). Charges for labor are excluded from tax when performed on qualifying manufacturing machinery and
equipment that is-movable-property at the time of-the capital improvement. The vendor that provides the labor is allowed to treat the materials used as purchased for resale. All materials that are incorporated into qualifying machinery and equipment
during the capital improvement qualify for exclusion from tax.

(b). Materials incorporated into qualifying manufacturing
machinery and equipment that is immovable property at the time of the capital improvement are eligible for exclusion as follows:

(i). In instances when a manufacturer purchases materials that will become a component part of qualifying machinery or equipment, the materials are excluded from tax.



---

(ii). A repair vendors purchases of materials that will become component parts of
qualifying machinery or equipment are excluded from tax if the vendor has been designated as a mandatary of a manufacturer. The vendor must obtain the manufacturers exclusion Form R-1071 and provide it, with a copy of the contract of mandate
or the Departments Form R-1072, to the seller at the time of purchase. Manufacturers that supply this form to their mandataries must maintain a schedule of the tangible personal property used in these capital improvements.

(c). Purchases of spare machinery and equipment, such as compressors, pumps, and valves, qualify for the exclusion provided these items
satisfy the definition of machinery and equipment provided in R.S. 47:301(3)(i). Spare machinery and equipment, such as bolts, nuts, gaskets, oil, etc., which cannot be depreciated for federal income tax purposes, do not qualify for the exclusion.

Lease or Rental-

a. - b.vii.

viii. the lease or rental of machinery and equipment used predominantly
and directly in the process of manufacturing tangible personal property for sale or used directly in the production, processing, and storing of food, fiber, or timber for sale. The meanings of manufacturing, used predominantly, and
used directly provided in LAC 61:1.4301.C.Cost Price.h apply. This exclusion applies to state sales or use tax and local sales or use taxes if the political subdivision has adopted this exclusion by ordinance.

c. - d.

Sales Price-

a.i. - ix.(b).

x. R.S. 47:301(13)(k) excludes machinery and equipment used predominantly and directly in the process of manufacturing tangible personal property for sale or used directly in the production, processing, and
storing of food, fiber, or timber for sale from the sales price. For purposes of sales price, the interpretations provided under LAC 61:I.4301.C.Cost Price.h will apply. This exclusion applies to state sales tax and local sales
taxes if the political subdivision has adopted this exclusion by ordinance. To determine sales price subject to tax, this exclusion is deducted from the total amount charged to the customer after allowances for trade-ins and before any
exemptions provided elsewhere in the law.

b.i. - ii.

-AUTHORITY NOTE:- Promulgated in Accordance with:-R,S. 47:301 and R. S. 47:1511.

HISTORICAL NOTE: Promulgated by the Department of Revenue and Taxation, Sales Tax Section, LR 13:107 (February 1987), amended by the Department of
Revenue and Taxation, Sales Tax Division, LR 21:957 (September 1995), LR 22:855 (September 1996), amended by the Department of Revenue, Policy Services Division, LR 27:1703 (October 2001),R 28:348 (February 2002),LR 28:1488 (June 2002), LR 28:2554
(December 2002), LR 28:2556 (December 2002), LR 29:186 (February 2003), LR 30:1306 (June 2004), LR 31:

Family Impact Statement

As required by Act 1183 of the 1999 Regular Session of the Louisiana Legislature the following Family Impact Statement is submitted to be published
with the Notice of Intent in the Louisiana Register. A copy of this statement will also be provided to our legislative oversight committees.



---

1. The Effect on the Stability of the Family. Implementation of these proposed amendments
will have no effect on the stability of the family.

2. The Effect on the Authority and Rights of Parents Regarding the
Education and Supervision of Their Children. Implementation of these proposed amendments will have no effect on the authority and rights of parents regarding the education and supervision of their children.

3. The Effect on the Functioning of the Family. Implementation of these proposed amendments will have no effect on the functioning of the
family.

4. The Effect on Family Earnings and Family Budget. Implementation of these proposed amendments will have no effect
on family earnings and family budget.

5. The Effect on the Behavior and Personal Responsibility of Children. Implementation
of these proposed amendments will have no effect on the behavior and personal responsibility of children.

6. The Ability of
the Family or a Local Government to Perform the Function as Contained in the Proposed Rule. Implementation of these proposed amendments will have no effect on the ability of the family or a local government to perform this function.

Interested persons may submit data, views, or arguments, in writing to Raymond E. Tangney, Senior Policy Consultant, Policy Services Division, P.O. Box
44098, Baton Rouge, LA 70804-4098 or by fax to (225) 219-2759. All comments must be submitted by 4:30 p.m., Tuesday, January 25, 2005. A public hearing will be held on Wednesday, January 26, 2005, at 1:30 p.m. at the Department of Revenue
Headquarters Building, 617 North Third Street, Baton Rouge, LA.

Raymond E. Tangney

Senior Policy Consultant

FISCAL AND ECONOMIC IMPACT STATEMENT FOR ADMINISTRATIVE RULES

RULE TITLE: Sales and Use Tax Exclusion for Manufacturing Machinery and Equipment

I. ESTIMATED IMPLEMENTATION COSTS (SAVINGS) TO STATE OR LOCAL GOVERNMENT UNITS (Summary)

Implementation costs to administer the sales tax exclusion for manufacturing machinery and equipment enacted by Acts 2004 1st Ex. Sess.,
No. 1, for the Department of Revenue are approximately $190,000 for fiscal year 2004-2005, $198,000 for fiscal year 2005-2006, and $206,000 for fiscal year 2006-2007. The costs are to hire two Revenue Accounts Auditors and three Revenue Agents
and to purchase the office equipment needed to administer the exclusion. These proposed amendments to LAC 61:I.4301 will not affect those costs. Implementation will have no impact on local governments costs or savings because no local
government has adopted this exclusion.

II. ESTIMATED EFFECT ON REVENUE COLLECTIONS OF STATE OR LOCAL GOVERNMENTAL UNITS (Summary)

The phase-in of the sales tax exclusion for manufacturing machinery and equipment enacted by Acts 2004 1st Ex. Sess., No. 1, would
reduce state sales tax revenues by $5 million for fiscal year 2004-2005; $20 million for fiscal year 2005-2006; $40 million for fiscal year 2007-2008; $76 million for fiscal year 2008-2009; $96 million for fiscal year 2009-2010; $121 million for



---

fiscal year 2010-2011; and $125 million annually when fully implemented in fiscal year 2011-2012. The Act allows local governments to adopt the exclusion by
ordinance, and since no local government has adopted the exclusion, there will be no effect on local sales tax revenues.

III. ESTIMATED COSTS AND/OR
ECONOMIC BENEFITS TO DIRECTLY AFFECTED PERSONS OR NONGOVERNMENTAL GROUPS (Summary) These proposed amendments establish procedures for applying for the manufacturing machinery and equipment exclusion enacted by Acts 2004 1st Ex. Sess., No. 1,
and provide guidance to taxpayers on what transactions qualify for the exclusion. It is estimated that the exclusion provided by the Act will save Louisiana manufacturers over $120 million per year in state sales taxes when fully implemented in
fiscal year 2011-12.

IV. ESTIMATED EFFECT ON COMPETITION AND EMPLOYMENT (Summary) These proposed amendments should have no effect on competition or
employment.



|                |  |                                    
|--------------- |  | -----------------------------------
|Cynthia Bridges |  | Robert E. Hosse                    
|Secretary       |  | General Government Section Director
|0412#052        |  | Legislative Fiscal Office          



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Revenue Information Bulletin

No. 04-012-A

May 18, 2004

Sales Tax

5% of the Price of Manufacturing
Machinery and Equipment to be Excluded From

State Sales Tax, Effective July 1, 2004

Five percent of the price of eligible manufacturing machinery and equipment will be excluded from state sales tax effective July 1, 2004, in the first of seven
steps toward the complete exclusion of such property from state sales tax on July 1, 2010. This exclusion for manufacturing equipment was authorized by Act 1 of the 2004 First Extraordinary Session of the Louisiana Legislature.

Act 1 provided that five percent of the price of eligible manufacturing machinery and equipment would be excluded from state sales taxation during the 2004-05 state
fiscal year if the Revenue Estimating Conference were to forecast additional 2004-05 state general fund revenues of $235 million or more above the amount that was forecast on December 16, 2003. The Revenue Estimating Conference met on
May 14, 2004, and forecast general revenues for 2004-05 of $268.8 million above the amount forecast on December 16, 2003. As provided by Act 1, the five percent exclusion is implemented at the beginning of the second calendar month after
the adoption of the revised revenue forecast, or July 1, 2004.

The exclusions are from the state sales, use, lease, and rental tax for machinery and
equipment used by eligible manufacturers in plant facilities predominantly and directly in the actual manufacturing for agricultural purposes or in the actual manufacturing of tangible personal property that is for sale to another. The exclusions
provided are from the definition of cost price for use tax purposes under Revised Statute 47:301(3), sales price for sales tax purposes under R.S. 47:301(13), and gross proceeds (from lease or rental),
monthly lease or rental price paid and monthly lease or rental price contracted or agreed to be paid as used in R.S. 47:302(B), 321(B), and 331(B) imposing the tax on lease and rental transactions. The legislation authorizes
political subdivisions of the state to provide these exclusions from local sales, use, lease, and rental taxes but does not require that they do so.

Act 1
provides for a gradual increase over a period of six years in the percentage of the price of manufacturing machinery and equipment that will be excluded from sales tax, as follows:



|             |  |     
|------------ |  | ----
|July 1, 2004 |  | 5%  
|July 1, 2005 |  | 19% 
|July 1, 2006 |  | 35% 
|July 1, 2007 |  | 54% 
|July 1, 2008 |  | 68% 
|July 1, 2009 |  | 82% 
|July 1, 2010 |  | 100%



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Revenue Information Bulletin No. 04-012-A

Page 2 of 4

Qualifications for Exclusion

In order for tangible personal property to be excluded from sales taxation in the percentages authorized in the act, the tangible personal property must be:



| |  |  | Manufacturing machinery and equipment
| | - |  | ---------------------------------------

Machinery and equipment is defined in the act as tangible personal property or other property that is eligible for depreciation for federal income tax purposes and that is used as an integral part in the manufacturing of
tangible personal property for sale. Machinery and equipment also includes tangible personal property or other property that is eligible for depreciation for federal income tax purposes and that is used as an integral part of the
production, processing, and storing of food and fiber or of timber.

Specific examples of tangible personal property that the act categorizes as eligible
machinery and equipment are computers and software that are an integral part of the machinery and equipment used directly in the manufacturing process; machinery and equipment necessary to control pollution at a plant facility where
pollution is produced by the manufacturing operation; and machinery or equipment used to test or measure raw materials, the property undergoing manufacturing, or the finished product, when such test or measurement is a necessary part of the
manufacturing process.

Categorized by the act as ineligible for the manufacturing machinery and equipment exclusions are a building and its
structural components, unless the building or structural component is so closely related to the machinery and equipment that it houses or supports that the building or structural component can be expected to be replaced when the machinery and
equipment are replaced; heating, ventilation, and air-conditioning systems, unless their installation is necessary to meet the requirements of the manufacturing process, even though the system may provide incidental comfort to employees or serve, to
an insubstantial degree, nonproduction activities; tangible personal property used to transport raw materials or manufactured goods prior to the beginning of the manufacturing process or after the manufacturing process is complete; and tangible
personal property used to store raw materials or manufactured goods prior to the beginning of the manufacturing process or after the manufacturing process is complete.



| |  |  | Used by a manufacturer
| | - |  | ------------------------

The term
manufacturer is defined in the act as a person whose principal activity is manufacturing, and who is assigned by the Louisiana Department of Labor a North American Industry Classification System (NAICS) code within the agricultural,
forestry, fishing, and hunting Sector 11 or the manufacturing Sectors 31-33, as they existed in 2002.



| |  |  | Used by that manufacturer in a plant facility predominantly and directly in the actual manufacturing for agricultural purposes
or in the actual manufacturing process of an actual item of tangible personal property which is for ultimate sale to another, and not for internal use, at one or more fixed locations in Louisiana
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

The term plant facility is defined as a facility, at one or more locations, in which manufacturing referred to in sectors 11 and 31-33 of the North
American Industry Classification



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Revenue Information Bulletin No. 04-012-A

Page 3 of 4

System of 2002, of a product of tangible personal property takes place. Used directly means
used in the actual process of manufacturing or manufacturing for agricultural purposes.

Manufacturing for agricultural purposes, means the
production, processing, and storing of food and fiber and the production, processing, and storing of timber.

Manufacturing, the act provides,
means putting raw materials through a series of steps that brings about a change in their composition or physical nature in order to make a new and different item of tangible personal property that will be sold to another. The act provides that
manufacturing begins at the point at which raw materials reach the first machine or piece of equipment involved in changing the form of the material and ends at the point at which manufacturing has altered the material to its completed form. Placing
materials into containers, packages, or wrapping in which they are sold to the ultimate consumer is part of this manufacturing process.

The act provides
that for purposes of the sales tax exclusions, manufacturing does not include repackaging or redistributing; the cooking or preparing of food products by a retailer in the regular course of retail trade; the storage of tangible personal property;
the delivery of tangible personal property to or from the plant; the delivery of tangible personal property to or from storage within the plant; and actions such as sorting, packing, or shrink wrapping the final material for ease or transporting and
shipping.



| |  |  | Purchased by a person who has received a certificate of exclusion from the Louisiana Department of Revenue certifying that he is a manufacturer
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------

Optional Local Exclusions

The act authorizes, but does not require, political subdivisions of the state to allow the same exclusions of manufacturing equipment from the definitions of cost price, sales price, gross proceeds,
monthly lease or rental price paid and monthly lease or rental price contracted or agreed to be paid. Political subdivisions may, under the act, allow any or all of the definitional exclusions, either upon adoption or
enactment or phased in over a period of time set forth in the instrument providing the exclusion.

Farm Equipment

Through the several definitions quoted above, depreciable machinery and equipment is excluded from taxation in the specified percentages when it is used by eligible
businesses predominately and directly in the actual production, processing and storing of food, fiber, and timber. Some, but not all, of the machinery and equipment that is eligible for these exclusions are also eligible for the exemption provided
by R.S. 47:305.25(A)(1) and (2) on the first $50,000 of the sales price of certain farm equipment1

In the determination of the taxable base on the
sale to an eligible purchaser of a farm tractor, cane harvester, cane loader, cotton picker, combine, haybaler, sprayer, clipper, cultivator, disc,

The
exemptions for farm-related equipment provided by R.S. 47:305.25(A)(3), (4) and (5) are suspended indefinitely by R.S. 47:321(H) with respect to the 1 percent tax levied by R.S. 47:321, and through June 30, 2009, with respect to the
other 3 percent of the state sales and use tax levy, as provided by R.S. 47:302(Q) and 302(R), and 47:331(0) and 331(P).



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Revenue Information Bulletin No. 04-012-A

Page 4 of 4

plow, spreader, or other attachments, the exclusions provided by Act 1 will be applied first. The $50,000
exemption is then deducted from the taxable amount remaining after the exclusions authorized by Act 1 are applied. For example, assume the sale of a farm tractor on July 1, 2004, costing $100,000. The tax is calculated as follows:



|                              |  |            
|----------------------------- |  | -----------
|Gross sales price             |  | $100,000.00
|Less Act 1 Exclusion (5%)     |  | (5,000.00) 
|Remainder                     |  | 95,000.00  
|Less R.S. 47:305.25 exemption |  | (50,000.00)
|Taxable Base                  |  | $45,000.00 
|State Tax Due (4%)            |  | $1,800.00  

Only the sales of the farm tractors, cane harvesters, cane loaders, cotton pickers, combines, haybalers, sprayers,
clippers, cultivators, discs, plows, spreaders, and other attachments specified by R.S. 47:305.25(A)(1) and (2), are eligible for the exemption on the first $50,000 of the sales price. Other depreciable farm-related machinery and equipment used by
eligible businesses predominately and directly in the actual production, processing and storing of food, fiber, and timber qualify only for the exclusion provided by Act 1.

Questions concerning this matter can be directed to the Taxpayer Services Division at 225.219.7356.

Cynthia
Bridges

Secretary

A Revenue Information Bulletin (RIB) is
issued under the authority of LAC 61:III.101.D. A RIB is an informal statement of information issued for the public and employees that is general in nature. A RIB does not have the force andeffect of law and is not binding on the public or the
Department.



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|                                   |  |            |  |         
|---------------------------------- |  | ---------- |  | --------
|Second Extraordinary Session, 2008 |  | ACT No. 12 |  | ENROLLED
|                                   |  |           
|SENATE BILL NO. 12                 |  |            |  |         

BY SENATORS MARIONNEAUX, ADLEY, ALARIO, AMEDEE, BROOME, CASSIDY, CHAISSON, CHEEK, CRAVINS, CROWE, DONAHUE, DORSEY,
DUPLESSIS, DUPRE, ERDEY, N. GAUTREAUX, GRAY, HEBERT, HEITMEIER, JACKSON, KOSTELKA, LAFLEUR, LONG, MARTINY, MCPHERSON, MICHOT, MORRISH, MOUNT, MURRAY, NEVERS, RISER, SCALISE, SHAW, SMITH, THOMPSON AND WALSWORTH AND REPRESENTATIVES ABRAMSON, ANDERS,
ARMES, ARNOLD, AUBERT, AUSTIN BADON, BOBBY BADON, BALDONE, BARRAS, BARROW, BILLIOT, HENRY BURNS, TIM BURNS, BURRELL, CARMODY, CARTER, CAZAYOUX, CHAMPAGNE, CHANDLER, CHANEY, CONNICK, CORTEZ, DANAHAY, DOERGE, DOWNS, EDWARDS, FANNIN, FOIL, FRANKLIN,
GALLOT, GISCLAIR, GREENE, ELBERT GUILLORY, MICKEY GUILLORY, GUINN, HARDY, HARRISON, HAZEL, HENRY, HINES, HOFFMANN, HONEY, HOWARD, HUTTER, GIROD JACKSON, MICHAEL JACKSON, JOHNSON, ROSALIND JONES, SAM JONES, KATZ, KLECKLEY, LABRUZZO, LAFONTA, LAMBERT,
LEBAS, LEGER, LIGI, LITTLE, LOPINTO, LORUSSO, MCVEA, MONICA, MONTOUCET, MORRELL, MORRIS, NORTON, NOWLIN, PEARSON, PERRY, PETERSON, PONTI, POPE, RICHARD, RICHARDSON, RICHMOND, RITCHIE, ROBIDEAUX, ROY, SCHRODER, SIMON, SMILEY, JANE SMITH, PATRICIA
SMITH, ST. GERMAIN, TALBOT, TEMPLET, TRAHAN, WADDELL, WHITE, WILLIAMS, WILLMOTT AND WOOTON

AN ACT

To amend and reenact R.S. 47:301(3)(i)(i),13(k)(i), and (28)(a) and (e), relative to sales and use tax of the state and statewide political
subdivisions; to provide for an accelerated reduction of the sales price, cost price, gross proceeds derived from a lease or rental, monthly lease or rental price paid, and the monthly lease or rental price contracted or agreed to by way of an
exclusion of certain manufacturing machinery and equipment; to provide that the manufacturers exemption certificate granted by the Department of Revenue shall serve as a substitute for the sales tax exemption for certain farm equipment; to
provide for an effective date; and to provide for related matters.

Page 1 of 5

Coding: Words which are struck through are deletions from existing law;

words inboldface type and underscored are additions.



---

|SB NO. 12 | ENROLLED
|--------- | --------

Be it
enacted by the Legislature of Louisiana:

Section 1. R.S. 47:301(3)(i)(i),13(k)(i), and (28)(a) and (e), are hereby amended and
reenacted to read as follows:

§301. Definitions

As used in this Chapter the following words, terms, and phrases have the meaning ascribed to them in this Section, unless the context clearly indicates a different meaning:

(3) (i)(i) For purposes of the imposition of the use tax levied by the state and any political subdivision whose boundaries are coterminous with those of
the state, the cost price of machinery and equipment used by a manufacturer in a plant facility predominately and directly in the actual manufacturing for agricultural purposes or the actual manufacturing process of an item of tangible personal
property, which is for ultimate sale to another and not for internal use, at one or more fixed locations-within Louisiana, shall be reduced as follows:

(aa) For the period ending on June 30, 2005, the cost price shall be reduced by five percent.

(bb)
For the period beginning July 1, 2005, and ending on June 30, 2006, the cost price shall be reduced by nineteen percent.

(cc)
For the period beginning July 1, 2006, and ending on June 30, 2007, the cost price shall be reduced by thirty-five percent.

(dd)
For the period beginning July 1, 2007, and ending on June 30, 2008, the cost price shall be reduced by fifty-four percent.

(ee)
For the period beginning July 1, 2008, and ending on June 30, 2009, the cost price shall be reduced by sixty-eight percent.

Page
2 of 5

Coding: Words which are struck through are deletions from existing law; words inboldface type and
underscored are additions.



---

|SB NO. 12 | ENROLLED
|--------- | --------

(ff) For all periods beginning on or after July 1, 2009, the cost price shall be reduced by eighty-two one hundred percent.

*            *

(13) (k)(i) For purposes of the
imposition of the sales tax levied by the state and any political subdivision whose boundaries are coterminous with those of the state, the sales price of machinery and equipment purchased by a manufacturer for use in a plant facility predominately
and directly in the actual manufacturing for agricultural purposes or the actual manufacturing process of an item of tangible personal property, which is for ultimate sale to another and not for internal use, at one or more fixed locations within
Louisiana shall be reduced as follows:

(aa) For the period ending on June 30, 2005, the sales price shall be reduced by five percent.

(bb) For the period beginning July 1, 2005, and ending on June 30, 2006, the sales price shall be reduced by nineteen percent.

(cc) For the period beginning July 1, 2006, and ending on June 30, 2007, the sales price shall be reduced by thirty-five
percent.

(dd) For the period beginning July 1, 2007, and ending on June 30, 2008, the sales price shall be reduced by fifty-four
percent.

(cc) For the period beginning July 1, 2008, and ending on June 30, 2009, the sales price shall be reduced by
sixty-eight percent.

(ff) For the period beginning July 1, 2009, and ending June 30, 2010 all periods
beginning on or after July 1, 2009, the sales price shall be reduced by eighty-two one hundredpercent.

(gg)
For all periods beginning on or after July 1, 2010, the sales price shall be reduced by one hundred percent

Page 3 of 5

Coding: Words which are struck through are deletions from existing law; words inboldface type
and underscored are additions.



---

|SB NO. 12 | ENROLLED
|--------- | --------

*            *

(28)(a) For purposes of the imposition of the lease or
rental tax levied by the state and any political subdivision whose boundaries are coterminous with those of the state, the gross proceeds, monthly lease or rental price paid, and monthly lease or rental price contracted
or agreed to be paid for machinery and equipment used by a manufacturer in a plant facility predominately and directly in the actual manufacturing for agricultural purposes or the actual manufacturing process of an item of tangible personal
property, including, but not limited to rubber tired farm tractors, cane harvesters, cane loaders, cotton pickers, combines, haybalers, attachments and sprayers, clippers, cultivators, discs, plows, and spreaders, which is for
ultimate sale to another and not for internal use, at one or more fixed locations within Louisiana shall be reduced as follows:

(i) For the
period ending on June 30, 2005, by five percent.

(ii) For the period beginning July 1, 2005, and ending on June 30, 2006,
by nineteen percent.

(iii) For the period beginning July 1, 2006, and ending on June 30, 2007, by thirty-five percent.

(iv) For the period beginning July 1, 2007, and ending on June 30, 2008, by fifty-four percent.

(v) For the period beginning July 1, 2008, and ending on June 30, 2009, by sixty-eight percent.

(vi) For the period beginning July 1, 2009, and ending on June 30, 2010 all periods beginning on or after July 1,
2009, thesales price shall be reducedby eighty-two one hundred percent.

(vii) For all
periods beginning on or after July 1, 2010, by one hundred percent .

(e) The manufacturers exemption certificate
granted by the Departmentof Revenue shall serve as a substitute for the sales tax exemption for certainfarm equipment.

Page 4 of 5

Coding: Words which are struck through are deletions from existing law; words
in boldface type and underscored are additions.



---

|SB NO. 12 | ENROLLED
|--------- | --------

Section 2. This Act shall become effective on July 1, 2008; if vetoed by the governor and subsequently approved by the legislature, this Act shall become effective on July 1, 2008, or on the day following such approval by the
legislature, whichever is later.

PRESIDENT OF THE SENATE

SPEAKER OF THE HOUSE OF REPRESENTATIVES

GOVERNOR OF THE STATE OF LOUISIANA

APPROVED:

Page 5 of 5

Coding: Words which are struck through are deletions from existing law; words in boldface type and underscored are additions.



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Attachment 5

Manufacturing Machinery and Equipment Exemption Certificate



|                                                                                      |  |       
|------------------------------------------------------------------------------------- |  | ------
|Privileged and Confidential                                                           |  | Page 7
|                                                                                     
|Red River Environmental Products Engineering, Procurement, and Construction Agreement



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Attachment 6

Louisiana Dept of Revenue Designation of Mandate



|                                                                                      |  |       
|------------------------------------------------------------------------------------- |  | ------
|Privileged and Confidential                                                           |  | Page 8
|                                                                                     
|Red River Environmental Products Engineering, Procurement, and Construction Agreement



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Louisiana Department of Revenue

Manufacturers Designation of Mandate (Agency)

Red River Environmental
Products, LLC                     , a person whose principal

(Legal name of
Manufacturer)

activity is the manufacturing or producing of tangible personal property for sale and who has been assigned
by the Louisiana Department of Labor a North American Industrial Classification System (NAICS) code within the agricultural, forestry, fishing and hunting Sector 11 or the manufacturing Sectors 31-33 as they existed in 2002, does hereby designate
the following person as its mandatary for the purpose of making purchases, leases, and rentals of manufacturing machinery and equipment:

BE&K Construction Company, LLC

(Name)

2000 International Park Drive

(Address)

Birmingham, AL 35243

(City, State, ZIP)

This designation of mandate shall be effective for purchases, leases, and rentals of manufacturing machinery and equipment to be used by the designating manufacturer
predominantly and directly in manufacturing or producing tangible personal property or agricultural products for sale. The manufacturing machinery and equipment will be used at a plant facility whose address is:

West End Parish Road 604

Armistead, LA 71019

(Mark one.)



| | X | The designated mandatary is not restricted as to vendor.
| | - | --------------------------------------------------------



| |  ̈ | The designated mandatary is restricted to purchases from the following vendor:
| | - | ------------------------------------------------------------------------------

The designation of mandate is for the period ofSeptember 5, 2008, throughOctober 1, 2010

Purchases, leases, and
rentals of tangible personal property during this period by the mandatary for use at this manufacturing location shall be considered as the legal equivalent of purchases directly by the designating manufacturer. Should such tangible personal
property ultimately be used other than predominately and directly in the manufacturing of tangible personal property or agricultural products for sale, the designating manufacturer and/or the designated mandatary will be liable for the tax. The
mandatary is not authorized to delegate this purchasing authority to others; separate designations of mandate by the manufacturer are required for each person who is to purchase eligible manufacturing machinery and equipment on behalf of the
manufacturer. The undersigned hereby certify that this designation is the entirety of the mandate contract between them.



|                                              |  |                                                        
|--------------------------------------------- |  | -------------------------------------------------------
|Designation of Mandate:                       |  | Acceptance of Mandate:                                 
|                                              | 
|(Signature of Authorized Designator and Date) |  | (Signature of Mandatarys Authorized Acceptor and Date)
|                                              | 
|(Name of Authorized Designator)               |  | (Name of Mandatarys Authorized Acceptor)              
|                                              | 
|(Name of Manufacturers Designator)           |  | (Name of Mandatary)                                    
|                                              | 
|(Address)                                     |  | (Address)                                              



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Attachment 7

Manufacturing Machinery and Equipment Exemption Accounting Schedule



|                                                                                      |  |       
|------------------------------------------------------------------------------------- |  | ------
|Privileged and Confidential                                                           |  | Page 9
|Red River Environmental Products Engineering, Procurement, and Construction Agreement



---

Name of Owner:

Contract
Construction Period:



|                                                                                                                             |  |                 |          |              |       |                |          |                        |             |                                        |  |                   |  |                   |   |                      |  | 
|---------------------------------------------------------------------------------------------------------------------------- |  | --------------- | -------- | ------------ | ----- | -------------- | -------- | ---------------------- | ----------- | -------------------------------------- |  | ----------------- |  | ----------------- | - | -------------------- |  | 
|MM&E Schedule - Purchased by Contractor and MM&E Exemption Claimed                                                           |  |                
|Contractor Name: BE&K Construction Company Louisiana Dept. of Revenue Sales/Use Tax Account #: Write In Tax Acct Number here |  |                 |          |              |       |               
|Vendor Name                                                                                                                  |  | VendorInvoice # |          | DeliveryDate |       | PurchaseAmount |          | Description ofPurchase |             | Description ofLocation Used in Project |  | 4% State SalesTax |  | 4% LocalSales Tax |   | MM&E ExemptionAmount
|                                                                                                                             |  |                 |          |              |       | Amount         |          | Amount                 |             | Amount                                
|Type over first two lines                                                                                                    |  | 2564452001      |          | 10/20/98     |       | $              | 560.28   |                        | switches    |                                        |  |                   |  |                   | $ | 22.41                |  | 
|Type over first two lines                                                                                                    |  | 2564452002      |          | 11/22/98     |       | $              | 2,524.73 |                        | steel beams |                                        |  |                   |  |                   | $ | 100.99               |  | 
|                                                                                                                             |  |                 |          |              |       |                |          |                        |             |                                        |  |                   |  |                   | $ | 0.00                 |  | 
|                                                                                                                             |  |                 |          |              |       |                |          |                        |             |                                        |  |                   |  |                   | $ | 0.00                 |  | 
|                                                                                                                             |  |                 |          |              |       |                |          |                        |             |                                        |  |                   |  |                   | $ | 0.00                 |  | 
|                                                                                                                             |  |                 |          |              |       |                |          |                        |             |                                        |  |                   |  |                   | $ | 0.00                 |  | 
|                                                                                                                             |  |                 |          |              |       |                |          |                        |             |                                        |  |                   |  |                   | $ | 0.00                 |  | 
|                                                                                                                             |  |                 |          |              |       |                |          |                        |             |                                        |  |                   |  |                   | $ | 0.00                 |  | 
|                                                                                                                             |  |                 |          |              |       |                |          |                        |             |                                        |  |                   |  |                   | $ | 0.00                 |  | 
|                                                                                                                             |  |                 |          |              |       |                |          |                        |             |                                        |  |                   |  |                   | $ | 0.00                 |  | 
|                                                                                                                             |  |                 |          |              |       |                |          |                        |             |                                        |  |                   |  |                   | $ | 0.00                 |  | 
|                                                                                                                             |  |                 |          |              |       |                |          |                        |             |                                        |  |                   |  |                   | $ | 0.00                 |  | 
|                                                                                                                             |  |                 |          |              |       |                |          |                        |             |                                        |  |                   |  |                   | $ | 0.00                 |  | 
|                                                                                                                             |  |                 |          |              |       |                |          |                        |             |                                        |  |                   |  |                   | $ | 0.00                 |  | 
|                                                                                                                             |  |                 |          |              |       |                |          |                        |             |                                        |  |                   |  |                   | $ | 0.00                 |  | 
|                                                                                                                             |  |                 |          |              |       |                |          |                        |             |                                        |  |                   |  |                   | $ | 0.00                 |  | 
|                                                                                                                             |  |                 |          |              |       |                |          |                        |             |                                        |  |                   |  |                   | $ | 0.00                 |  | 
|                                                                                                                             |  |                 |          |              |       |                |          |                        |             |                                        |  |                   |  |                   | $ | 0.00                 |  | 
|                                                                                                                             |  |                 |          |              |       |                |          |                        |             |                                        |  |                   |  |                   | $ | 0.00                 |  | 
|                                                                                                                             |  |                 |          |              |       |                |          |                        |             |                                        |  |                   |  |                   | $ | 0.00                 |  | 
|                                                                                                                             |  |                 |          |              |       |                |          |                        |             |                                        |  |                   |  |                   | $ | 0.00                 |  | 
|                                                                                                                             |  |                 |          |              |       |                |          |                        |             |                                        |  |                   |  |                   | $ | 0.00                 |  | 
|                                                                                                                             |  |                 |          |              |       |                |          |                        |             |                                        |  |                   |  |                   | $ | 0.00                 |  | 
|                                                                                                                             |  |                 |          |              |       |                |          |                        |             |                                        |  |                   |  |                   | $ | 0.00                 |  | 
|                                                                                                                             |  |                 |          |              |       |                |          |                        |             |                                        |  |                   |  |                   | $ | 0.00                 |  | 
|                                                                                                                             |  |                 |          |              |       |                |          |                        |             |                                        |  |                   |  |                   | $ | 0.00                 |  | 
|                                                                                                                             |  |                 |          |              |       |                |          |                        |             |                                        |  |                   |  |                   | $ | 0.00                 |  | 
|                                                                                                                             |  |                 |          |              |       |                |          |                        |             |                                        |  |                   |  |                   | $ | 0.00                 |  | 
|                                                                                                                             |  |                 |          |              |       |                |          |                        |             |                                        |  |                   |  |                   | $ | 0.00                 |  | 
|                                                                                                                             |  |                 |          |              |       |                |          |                        |             |                                        |  |                   |  |                   | $ | 0.00                 |  | 
|                                                                                                                             |  |                 |          |              |       |                |          |                        |             |                                        |  |                   |  |                   | $ | 0.00                 |  | 
|                                                                                                                             |  |                 |          |              |       |                |          |                        |             |                                        |  |                   |  |                   | $ | 0.00                 |  | 
|                                                                                                                             |  |                 |          |              |       |                |          |                        |             |                                        |  |                   |  |                   | $ | 0.00                 |  | 
|                                                                                                                             |  |                 |          |              |       |                |          |                        |             |                                        |  |                   |  |                   | $ | 0.00                 |  | 
|                                                                                                                             |  |                 |          |              |       |                |          |                        |             |                                        |  |                   |  |                   | $ | 0.00                 |  | 
|                                                                                                                             |  |                 |          |              |       |                |          |                        |             |                                        |  |                   |  |                   | $ | 0.00                 |  | 
|TOTAL                                                                                                                        |  | $               | 3,085.01 |              | TOTAL |                | $        | 123.40                 |             |                                       



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APPENDIX M

Owner Contract Administration

Owner is a party to the Owner Contracts and may be a party to future
agreements (the Future Agreements.). The Owner Contracts and the Future Agreements which Contractor agrees to add hereto are hereinafter referred to as, the Project Agreements. The Project Agreements may be
amended or supplemented from time to time, all limited in scope to providing additional services to the Project and to Owner and its agents as such additional services relate to the Project.

In connection with the performance by Contractor of its obligations under the Agreement, Owner desires Contractor to assist Owner in performing its
obligations under the Project Agreements and to otherwise cooperate with Owner Suppliers in Contractors performance under the Agreement, in each case, on the terms and conditions set forth below.

Contractor shall administer the Project Agreements in accordance with the following:



| | 1. | Services
| | -- | --------

Subject to Sections 2 and 3
below, Contractor and Owner shall perform the following actions in connection with the Project:

(a) Contractor shall
perform the following services (collectively, the Services):

(i) General Obligation of
Contractor. Assist Owner in performing its obligations under the Project Agreements to the extent set forth in this Section 1, except in no case exercising the rights and obligations identified by Owner in Section 2 (the
Reserved Rights), actively collaborate with Owners Project Agreement counterparties to identify and employ efficiencies available to Contractor and such counterparties in each such partys performance of their
respective contractual obligations to Owner, cooperate with such counterparties efforts to perform its obligations that realize improvements to the Total Work Cost and Project Schedule, and otherwise be responsible for the coordination and
contract administration duties set forth in Section 1, in each case unless directed not to perform such duties in writing by Owner.

(iii) Negotiations, etc. Subject to Section 2, confer with, and otherwise assist Owner regarding, (A) any negotiations, agreements or disputes between Owner and any Project Agreement
counterparty that could adversely affect Owner or result in an increase in amounts owed by Owner under any of the Project Agreements and (B) the anticipated delivery by Owner of a notice of default under a Project Agreement.

(iv) General Administration. Perform as Owners agent all scheduling and other contract administration activities as specified
herein that are required of Owner pursuant to the Project Agreements, including, coordination of day-to-day scheduling and the provision of daily and other periodic scheduling information to the extent required by any of the Project Agreements.



---

(v) Invoice Review and Recommendation. Review invoices from Project Agreement
counterparties to Owner; investigate, and in good faith, attempt to verify, the correctness of such invoices with respect to assessments of percent completion and/or milestones attained; and recommend to Owner whether to pay such invoices or whether
to withhold all or a portion of such invoiced amounts and the reasons for such withholding.

(vi) Record-Keeping.
Provide record-keeping services to Owner, as Owner may request from time to time, in connection with the Project Agreements and all other documents executed and delivered in connection therewith (collectively, the Project
Documents), and, at Owners request, assist Owner in its preparation and submission of Owner all necessary documentation, certifications and notices required to be submitted by Owner pursuant thereto (including all reports and other
certificates required thereby). Such record keeping specifically excludes all accounting functions other than the review of invoices required under (v).

(vii) Governmental Authorizations. Except as otherwise required under this Agreement, monitor apparent compliance with all required governmental authorizations held by or for Owner in connection with the
Project Documents. Where governmental authorizations must be obtained, modified or renewed by Owner, upon request by Owner, Contractor shall assist Owner in preparation of any application, filing or notice related thereto and provide information
reasonably relating to Contractors Scope of Work so as to enable Owner to complete such application, filing or notice.

(viii) Miscellaneous. Contractor shall provide such other assistance or services reasonably anticipated in connection with the foregoing obligations. Contractor shall also provide, upon mutual agreement of Contractor and Owner, such
other assistance or services reasonably necessary in connection with Owners performance of its obligations under the Project Documents.

(b) Owner shall:

(i) General Obligation of Owner. At its sole option, facilitate
providing to Contractor all respective rights, benefits, duties and obligations under each of the Project Agreements, excluding the Reserved Rights, necessary for Contractor to fulfill its obligations under this Appendix M. Contractor shall
execute documents consistent herewith and reasonably necessary to evince its acceptance of the such rights, benefits, duties and obligations. Owner may, at any time or from time to time, revoke all or any part of such rights, benefits, duties or
obligations under any Project Agreement, such revoked or partially revoked rights, benefits, duties or obligations thereafter to become Reserved Rights.

(ii) Consultation. Consult with Contractor regarding (A) negotiations, agreements, or disputes between Owner and any other party to a Project Agreement that could adversely affect the ability of Contractor
to perform its obligations under this Agreement, and (B) the exercise by Owner of any Reserved Right.



| | 2. | Reserved Rights; Qualifications on Contractors Services
| | -- | --------------------------------------------------------

Notwithstanding any of the foregoing, in connection with Owners obligations under Section 1(b), Owner reserves unto itself the following rights, benefits, obligations and duties:



---

(a) The right of Owner to terminate any of, or any portion of any of, the Project
Agreements for cause, convenience or otherwise, as such right to terminate may be provided therein.

(b) The right of Owner
to modify, or agree to any modification of, amend, agree to any amendment of, supplement, or agree to supplement, from time to time, all or any part of any or all of the Project Agreements, as such right may be provided therein.

(c) The right of Owner to receive any payment Owner is entitled to receive, to include, without limitation, any indemnity payments or
liquidated damages or other damages payments to which Owner may, or may in the future, be entitled, under any of the Project Agreements.

(d) The right to establish the specifications or parameters, as identified by separate document to Contractor, under any of the Project Agreements, as such right may be provided therein.

(e) The right to review, establish or change procedures pursuant to relevant portions of the Project Agreements, as such right may be
provided therein.

(f) The right to participate as a member of the executive, operating, reporting or other committees or
other contractually-created entities, and to designate additional members, officers or participants thereto, if applicable, pursuant to relevant portions of the Project Agreements, as such right may be provided therein.

(g) The rights and obligations in connection with representations and warranties of Owner made pursuant to any of the Project Agreements.

(h) Subject to Section 1(b)(ii), the right to require or compel counterparties to act or to refrain from acting
pursuant to relevant portions of the Project Agreements, as such right may be provided therein.

(i) The right to designate
Owners payment method pursuant to relevant portions of the Project Agreements, as such right may be provided therein.

(j) The right to agree on liquidated damages amounts to be paid by Owner pursuant to relevant portions of any Project Agreement, which amounts Owner is required to pay directly under the Project Agreement.

(k) The right to assign or consent to an assignment of any of the Project Agreements, as such right may be provided therein.

(l) The right to release a counterparty or counterparties or to consent to release of a counterparty or counterparties to any of the
Project Agreements, as such right may be provided therein.

(m) The right to extend the term of any Project Agreement, as
such right may be provided therein.

(n) The right to exercise or reject the renewal options vested in Owner, as such right
or rights may be provided therein.



---

(o) The right to make, participate in making, approve, disapprove or veto, direct or
otherwise involve itself in design, model-selection, location, size, cost, or other such decisions that involve the Project, as such right or rights may be provided in the Project Agreements.

(p) The right to approve contracts and expenditures, and to negotiate payment schedules and adjustments thereto of whatever kind, as such
right or rights may be provided in the Project Agreements.

(q) The rights and obligations associated with transactions
involving real property interests, possessory, vested or contingent, in Owner, to include any license or other right to exercise influence or control a real property interest. The right reserved under this subsection (q) includes the right to
negotiate for or otherwise exercise such interests or rights, as such rights and/or obligations may be provided in the Project Agreements.

(r) The right to exercise control over costs and obligations in connection with decommissioning or preserving while inoperative the Project, as such right may be provided in the Project Agreements.

(s) The right to enter into any new agreement necessary or desirable in connection with the Project and/or to designate any amendment,
modification, supplement to any Project Agreement or any such new agreement as a Project Agreement subject to the terms and conditions of this Agreement.

(t) The right to act on such other matters that were initially allocated to Contractor and are later reserved to Owner as specified from time to time in a written notice delivered from Owner to Contractor specifying
the right, benefit, duty or obligation affected and the effective date of the complete or partial reallocation to Owner with respect thereto.



| | 3. | Service Standards
| | -- | -----------------

(a) Contractor
shall perform the Services in a prudent and efficient manner, in accordance with (i) Applicable Legal Requirements, (ii) governmental authorizations, (iii) sound industry and, where applicable, sound accounting practices, and
(iv) the terms of this Agreement and, to the extent consistent herewith, the Project Agreements.

(b) In acting on
behalf of Owner under the Project Documents, Contractor shall not knowingly take (or fail to take, as applicable) any action which would result in Owner being in default under any Project Document; provided, that in the event of a default under the
Project Agreements, Contractor shall only be responsible for defaults that result from acts or omissions that are defaults under the Agreement. Owner acknowledges that the obligation of Contractor not to knowingly take (or not fail to knowingly
take, as applicable) any action which would result in Owner being in default under any Project Document is not intended to expand the scope of Services to be provided by Contractor hereunder.

(c) Without limiting the foregoing in this Section 3, Contractor acknowledges and agrees that the obligations under this
Appendix M obligate it to dedicate and make available throughout the term of this Agreement such time and services as may be required to ensure that Contractor provides the Services and in all other respects performs its duties and
obligations under this Agreement in accordance with the terms hereof.



---

| | 4. | Owner
| | -- | -----

Subject to Section 2, Contractor
is hereby granted the authority to do, on behalf of Owner and in its name, all things which are necessary, proper or desirable to carry out the duties and responsibilities of Contractor under this Agreement, including the authority to perform on
behalf of Owner any Project Document, subject to any covenants or any other restrictions applicable to Owner thereunder and not otherwise reserved to Owner hereunder.



| | 5. | Payments For Services
| | -- | ---------------------

Contractors
compensation for its performance of the Services in this Appendix M are included as part of the Fixed Component. Without limiting any of Owners rights under Article 12 and Section 2.2.13.2(d) of the Agreement,
Contractor is not responsible for payments due under any Project Agreement.



---

APPENDIX N

Reimbursable Component

The following costs comprise the Reimbursable Component:



| |  |  | Costs incurred by Contractor for legal defense in matters not involving its own Personnel or its Subcontractors Personnel, if Owner directs Contractor to
undertake such legal action, pursuant to Sections 2.17 and 4.3.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Contractors costs incurred in providing training to Owner Personnel, pursuant to Section 2.2.11 and Appendix A.
| | - |  | ----------------------------------------------------------------------------------------------------------------



| |  |  | Sales Tax paid by Contractor, subject to the terms and conditions of Sections 2.2.9 and 3.4.2.
| | - |  | ----------------------------------------------------------------------------------------------



| |  |  | Contractors provision of initial fills pursuant to Section 3.8.3.
| | - |  | ------------------------------------------------------------------



| |  |  | Craft Labor costs, subject to the terms and conditions of Section 5.1.
| | - |  | ----------------------------------------------------------------------



| |  |  | Costs incurred by Contractor in procurement of spare parts for the Project pursuant to Sections 6.4.1(e) and 6.7.2.
| | - |  | -------------------------------------------------------------------------------------------------------------------



| |  |  | Costs incurred by Contractor in repeating Performance Test(s) due to a Change Event pursuant to Section 7.4(b).
| | - |  | ---------------------------------------------------------------------------------------------------------------



| |  |  | Costs incurred by Contractor in performing assistance to Owner pursuant to Sections 9.2and9.7.
| | - |  | ----------------------------------------------------------------------------------------------



---

APPENDIX O

Contractors Consumable List



|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Adaptor-Cutoff Wheel Alcohol Antenna-Portable & C.B. Arbor-Hole Saw Arbor-Morse Taper Axe-Wood Cutting Bag All Baking Soda Bar-Brass Bumper-2in. -3-in. Dia. Battery      A.A.      A.A.A.      C      D      9 Volt      Radio      Automotive Becket & Wedge-3/4-in. -7/8-in. Bit      Drill-All      Hougen-All      Wood-All Blades All Bolt Bag-Canvas Bolt Eye Boot-Rubber-All Bottle-Squirt-Spray Bricks-Concrete Rubbing Broom-All Brush-All Bucket Plastic/Galv/Mop/Oil w/pump Bulb-Light-All Burr-Carbide-All C-Clamp-4-in. -6-in. -8-in., -10-in. -12-in- Cable-Jumper Can-Fuel Caulk-All Chain- All Chair-Boatswain Chalk-Marking Chalk box-Carpenters Charger-Cordless Drill & Radio Chisel-All Choker-All Chuck-Collet 1/4 in. x 3/8 in. Chuck-Jacobs-All |  | Clamp      Wire Rope-All      Cable-All
     Hose-All Cleaner-Hand-All Clip-Air Safety Hose Cloth-Emery-All Compound-All Concrete      Blanket      Bull Float Handle-6 ft      Hand Tools-All      Rubbing Stone-All Concrete Rake-Come-A -Long Cooler-Water Keg-All-Non-electrical Cord      Drop Light      Cord-Extension Core Drill      Adapter-1-1/4-in.
-5/8-in.      Bits-All      Extension All Coupon-Weld Test Crayon-Lumber-Marking Crimping Tool-(Hose) 3/16-in.1/4-in. Crisco Cup
Dispenser Cup-Drinking Cutter-Box & Tin Cutter Wheel (Tube Cutters)-All Decal Dies      Hex-1/2-in. -1-1/2-in-      Pipe-1/2-in. -2-in.      Knockout -All      Compression -All      T&B Disc-Grinding-All Dresser-Wheel-Stone Leveler Dye-Layout Expander-Adapter- Impact Expander-Mandrel
All Expander-Roller Expander-Tube Extractor-Screw-All File Bastard-All



---

APPENDIX O

Contractors Consumable List



|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Filters- All Fitting-Air & Water
Hose Flagging-Engineers-All Flashlight All Floor Sweeping Compound Float-Concrete Funned-All Garden Sprayer-All Grease-All Purpose Gun      Caulk      Grease      Staple Hammer-Ballpien, Claw Handle-All Hoe-All Hose-Water and Air Iron- Water Stop Knife- Putty Lantern- 6 volt Lights- Portable. Locks Mandrel-All Milling Tool Parts      Bits      Blocks      Ramps      Heads Mirrors- Inspection Mops Nozzle-Water Hose
Nutsetter-All Oil      Cutting      Threading      2-Cycle Oil Dry Picks-Maddock-All Pins      Bull      Drift      Pilot      Shear Pliers-All Plugs-Greenlee-PVC Polyetheyne
Punch (Greenlee)-Knockout Rag-All |  | Rake-Hand-Type Rainwear-All Reamers-All Receptacle-GFI Reel Gammon Rope-All Ruler-All Saw-Hand-and-Hole-Hack Scraper-Hand Screed-Concrete Screw Driver-All Scribes-Pocket Shackles-3/8-in2 1/2-in. Shovels-All Sign-BE&K-Adhesive- Magnetic Snips-Tin Soapstone Socket Hex Type-All Spade-Clay Sprayer-Garden Spring-Retainer-For Chipping Hammer Square-Framing Square-Tri-Carpenters Stamp-Steel-Alphabetical & Numerical Stencil-Numerical and Alphabetical Stick Hot Stone Grinding-All Strap Tie Dawn Strapping-Banding Material String Light Suit-Paper-Disposable Suit-rain-All Tab for Panel Saw      Locator Tab -Aluminum      Welding Tab Tack-Stake Tank-Propane Tap-Handle-All Tap-All Tape      Duct      Masking      Almost Tape      Fish      Teflon Tempstick  All Trowel-Brick Tubing-Clear All Turnbuckle-All



---

Exhibit  to Form 10-Q for the Quarter
Ended , 2008 filed by ADA-ES, Inc.

(File No. 000-50216) on November 7, 2008



APPENDIX O

Contractors Consumable List



|                                                                                                                                                                                                                                                                                                                                                                                                                                  |  | 
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | 
|Twine-Nylon Vacuum-Wet/Dry Vinegar-Caustic Neutralizer Wash Cutting Washer 3/8-in. Beveled for a Die Grinder Washer-Air Hose Wedge- Boiler, Line -Up, Oak Steel-All Wheel-Flapper-All Wheel Cut Off-All Wheel Cutting-Tungsten Sharpener-All Wheel Grinding-Tungsten Sharpener All Whip-Check-Wire Rope Wire      Music      Tie No, 9      Tie 16 Gauge Wire Reel-Tiewire Wrap-a-round Wrench-Drum Wrench Allen-Up to 11/2in. |  | 



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Exhibit 10.51 to Form 10-Q for the Quarter Ended September 30, 2008 filed by

ADA-ES, Inc. (File No. 000-50216) on November 7, 2008



APPENDIX P

Target Total Work Cost

Target Total Work Cost means the amount of two * Dollars ($*), as portions of the component parts of such amount (set forth in Table P-1 below) may be
adjusted pursuant to the Agreement.

The Target Total Work Cost is not to be construed as a lump sum price or in any way as a limitation on
Contractors entitlement to be paid all the Construction Price incurred in the performance of the Work and Contractors other obligations under the Agreement.

For reference purposes only, the cost components listed in Table P-2 have not been incorporated into the above-stated Target Total Work Cost amount:



|                                                                                                                         
|-------------------------------------------------------------------------------------------------------------------------
|Table P-1                                                                                                                
|ITEMS INCLUDED IN TARGET TOTAL WORK COST                                                                                 
|                                                                                                                         
|Fixed Component of the Construction Price as adjusted by Owner-initiated Change Orders ($* initial value)                
|Costs incurred by Owner pursuant to the Preliminary EPC Agreement (Maximum as adjusted by Change Orders) ($* final value)
|Cost target pursuant to the Letter Agreement that are not included in the Construction Price ($* final value)            
|Costs incurred by Owner pursuant to the Owner Contracts, inclusive of Owner-initiated change orders ($* initial value)   
|Actual amount paid by Owner to Contractor for the Early Phase 1 Substantial Completion Bonus Amount ($0 initial value)   
|Reimbursable Component of the Construction Price, as adjusted by Owner-initiated Change Orders:                          
|     The Craft Labor Cost Estimate shall remain fixed, as set forth in Appendix N
($*)                                  
|     Sales Tax of ($*)                                                                                                  
|     Spare Parts ($*)                                                                                                   
|     Training ($*)                                                                                                      



|                                                                                                 
|-------------------------------------------------------------------------------------------------
|Table P-2                                                                                        
|ITEMS EXCLUDED FROM THE TARGET TOTAL WORK COST                                                   
|                                                                                                 
|Early Substantial Completion Bonus Amount                                                        
|Increased Throughput Bonus                                                                       
|Any bonus concerning Craft Labor underruns Contractor may earn pursuant to Section 5.1.6(e)and(f)



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Exhibit 10.51 to Form 10-Q for the Quarter Ended September 30, 2008 filed by

ADA-ES, Inc. (File No. 000-50216) on November 7, 2008



|                                                              
|--------------------------------------------------------------
|Contractor-initiated Change Orders that increase Owners costs
|Costs incurred by Owner due to events of Force Majeure        



---

Exhibit 10.51 to Form 10-Q for the Quarter Ended September 30, 2008 filed by

ADA-ES, Inc. (File No. 000-50216) on November 7, 2008



APPENDIX Q

Insurance Requirements



| | 1 | Builders Risk and Marine Cargo
| | - | -------------------------------

1.1 Builders Risk. Contractor shall provide an option price to Owner to purchase and maintain property insurance upon the entire complete Work at the Project Site from the beginning of Phase 2 until Substantial Completion.
Owner must decide whether it will exercise it option to have Contractor supply such insurance prior to Phase 2 commencing. If Owner elects to purchase Builders Risk Insurance on its own, Contractor shall not include any cost in its price for such
insurance. . Such property insurance shall be written on a repair or replacement cost basis, subject to standard exclusions, property limitations and conditions. Owner shall have the right to review all policy terms and conditions prior to deciding
whether to exercise the option to have Contractor procure and maintain the Builders risk insurance. Such insurance shall include the interest of Owner, the Financing trustee or collateral agent, Contractor, and all Subcontractors, including
their respective officers, representatives, agents and employees, in the Work and shall insure against fire, extended coverage and all risk perils (including resultant loss or damage from or as a consequence of faulty materials, workmanship or
design). Contractor shall bear the actual deductible for such policy of insurance up to a maximum of $250,000 per occurrence to the extent that the loss covered by such deductible is caused in whole or substantial part (including, without
limitation, the failure to perform obligations under this Agreement) by Contractor or Subcontractors or other persons performing Work on behalf of Contractor or any Subcontractor, and Owner shall bear any remaining portion of such deductible. If
required by the lenders, the policy under this Section 1.1 shall be written such that the proceeds of this insurance shall be payable to the Financing trustee or collateral agent for application as provided in the Financing documents.

Owner and Contractor (and Contractor shall cause each Subcontractor to) waive all rights against each other and the
Financing trustee or collateral agent for damages caused by fire and other perils and for the loss of use to the extent covered by property insurance obtained pursuant to this Section 1, or other property insurance applicable to the Work
or any other real or personal property of Owner, Contractor or the Subcontractors, including the existing structures, buildings and their contents, furniture and fixtures, except such rights as they may have to the proceeds of such insurance.

1.2 If applicable, the Contractor shall purchase and maintain marine cargo insurance on a
warehouse-to-warehouse basis for shipments destined to the Project Site, insuring materials or equipment to be installed as part of the Work at the Project Site



---

Exhibit 10.51 to Form 10-Q for the Quarter Ended September 30, 2008 filed by

ADA-ES, Inc. (File No. 000-50216) on November 7, 2008



against loss or damage arising from customary all risk marine perils while in transit. Contractor, Owner, and the Financing trustee or collateral
agent shall be additional insureds on such marine cargo policy as their interests may appear. Contractor shall bear the deductible for such policy of insurance per occurrence to the extent that the loss covered by such deductible is caused in whole
or substantial part (including, without limitation, the failure to perform obligations under this Agreement) by Contractor or Subcontractors or other persons performing Work on behalf of Contractor or any Subcontractor, and Owner shall bear any
remaining portion of such deductible. If required by the lenders, the policy under this Section 1.2 shall be written such that the proceeds of this insurance shall be payable to the Financing trustee or collateral agent for application
as provided in the Financing documents. Contractor acknowledges and agrees that it has been provided with and reviewed the terms and conditions of such marine cargo policy and that it shall abide by all requirements, instructions and conditions of
such marine cargo policy and agrees to the terms thereof, including the allocation of proceeds set forth therein.

1.3 The
insurance described in this Section 1 shall expressly provide that no less than sixty (60) days prior written notice by certified mail shall be given to Contractor and Company in the event of material alteration, cancellation or
non-renewal of the coverage provided by such insurance, except notice of cancellation for failure to pay any required premium which shall be furnished no less than ten (10) days prior to any such cancellation.



| | 2 | Required Contractor Provided Insurance
| | - | --------------------------------------

2.1 Prior to commencement of any Work under this Agreement and until the Final Completion Date, Contractor shall maintain, at its sole expense, the following insurance from financially sound and reputable insurance companies:

2.1.1 Comprehensive Automobile Liability. Comprehensive automobile liability coverage, including contractual liability coverage and
coverage for all owned, non-owned and hired vehicles. Coverage shall include limits of liability of one million Dollars ($1,000,000) per occurrence for combined single limit bodily injury and property damage for the Contractor insurance and one
million Dollars ($1,000,000) per occurrence for combined single limit bodily injury and property damage for insurance provided by Subcontractors.

2.1.2 Workers Compensation. Workers compensation and employers liability coverage shall be in form and with limits in accordance with the laws of the State of Louisiana, including other
states, occupational disease insurance, voluntary compensation insurance, United States long shoremens and harbor workers and maritime coverages. Coverage shall include limits of liability
of one million Dollars ($1,000,000) per occurrence; per employee for disease;



---

Exhibit 10.51 to Form 10-Q for the Quarter Ended September 30, 2008 filed by

ADA-ES, Inc. (File No. 000-50216) on November 7, 2008



and in the aggregate for disease. Coverage must extend to all operations of Contractor and Subcontractors. Should Contractor provide any loaned or leased
employees to Owner, an alternate employer endorsement naming Owner shall be endorsed to the workers compensation policy.

2.1.3 Professional Liability Insurance. Contractor shall cause detail design Subcontractors to obtain and maintain professional liability errors and omissions insurance on a claims made basis including contractual liability coverage
with limits of not less than two million Dollars ($2,000,000). Coverage shall be maintained in effect for two (2) years following the Final Completion Date. The following extensions of coverage are to be included:



| |  |  | Contractual Liability Endorsement
| | - |  | ---------------------------------



| |  |  | Thirty (30) days written notice cancellation endorsement
| | - |  | --------------------------------------------------------

2.1.4 Commercial General Liability. Commercial general liability coverage shall be on the 2001 ISO form or its equivalent, each
including, without limitation, the following coverages:



| |  |  | Premises/Operations, including deletion of explosion, collapse and underground hazards (XCU) exclusions;
| | - |  | --------------------------------------------------------------------------------------------------------



| |  |  | Products/Completed Operations extending for two (2) years after the Final Completion Date. Contractor and all Subcontractors of every tier will be responsible
for providing such coverage for their own protection thereafter;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Broad Form Contractual Liability, with definition of Insured Contract amended to delete reference to Work within fifty (50) feet of Railroad
Property;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Broad Form Property Damage, including Products/Completed Operations;
| | - |  | --------------------------------------------------------------------



| |  |  | Personal Injury Liability, with contractual exclusions deleted;
| | - |  | ---------------------------------------------------------------



| |  |  | Cross Liability Endorsement;
| | - |  | ----------------------------



| |  |  | Severability of Interest;
| | - |  | -------------------------



| |  |  | Incidental Medical Malpractice coverage;
| | - |  | ----------------------------------------



| |  |  | Host Liquor Endorsement; and
| | - |  | ----------------------------



| |  |  | Blanket Additional Insureds (all written agreements).
| | - |  | -----------------------------------------------------



---

Exhibit 10.51 to Form 10-Q for the Quarter Ended September 30, 2008 filed by

ADA-ES, Inc. (File No. 000-50216) on November 7, 2008



Commercial general liability coverage limits shall be two million Dollars ($2,000,000) per occurrence combined single limit for bodily
injury and property damage. If such insurance is furnished on a commercial general liability form, any aggregate or sublimit shall be those set forth below:



| |  |  | General aggregate limit of four million Dollars ($4,000,000);
| | - |  | -------------------------------------------------------------



| |  |  | Personal and advertising injury sublimit of two million Dollars ($2,000,000) each occurrence; and
| | - |  | -------------------------------------------------------------------------------------------------



| |  |  | Products/Completed Operations sublimit of two million Dollars ($2,000,000) each occurrence and four million Dollars ($4,000,000) in the aggregate, annually.
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------

Commercial general liability coverage must extend to all operations of Contractor and Subcontractors. The
commercial general liability policy aggregate limits shall be established such that the aggregate limits are solely applicable to claims occurring with respect to the Project Site.

2.1.5 Watercraft and Aircraft Liability. In the event that Contractor or its Subcontractors utilizes watercraft and/or aircraft in
connection with the Work, Contractor or Subcontractor (as applicable) shall maintain protection and indemnity coverage and/or aircraft liability coverage in an amount not less than five million Dollars ($5,000,000) per occurrence combined single
limit for bodily injury liability and property damage liability.

2.1.6 Excess Liability. Excess liability coverage
shall specifically identify each of the policies described above in Sections 2.1.1, 2.1.2,and 2.1.4 on the schedule of underlying coverages, and shall provide coverage that follows the form of each of such underlying
policies. Such coverage shall have limits of twenty-five million Dollars ($25,000,000), each occurrence and in the aggregate, annually, excess of such underlying policy limits.

2.1.7 Contractors Equipment. Contractor and all Subcontractors shall provide all-risk property insurance for all
property owned by, or in their control, which is not to be incorporated into the Work, including without limitation, tools, equipment, materials, and temporary structures.



| | 3 | General: All insurance described in Section 2 must be subject to the following provisions:
| | - | ------------------------------------------------------------------------------------------

3.1 Only occurrence type coverages with no sunset clause (claims made coverages are not acceptable
except with respect to professional liability insurance);



---

Exhibit 10.51 to Form 10-Q for the Quarter Ended September 30, 2008 filed by

ADA-ES, Inc. (File No. 000-50216) on November 7, 2008



3.2 Coverages must be with Bests A-VII or higher rated carriers reasonably acceptable to Owner;

3.3 Owner, the Financing trustee or collateral agent, the holders of the notes or other debt instruments purchased under the Financing
documents shall be additional insureds on all insurance provided by Contractor pursuant to Section.2except for insurance provided pursuant to Section 2.1.3;

3.4 The insurance described in Section.2 shall have a deductible no greater than One Million Dollars ($1,000,000.00) per
occurrence;

3.5 All coverage provided to additional insureds hereunder shall be limited to the extent losses are caused by
Contractors Work and shall be primary and not in excess or contributing to any insurance or self-insurance maintained by such additional insureds; and Contractor shall be solely responsible for payment of all premiums under such policies and

3.6 The insurance policies shall include a separation of insureds clause.

4       All certificates of insurance for the insurance described in Section 1 and 2 shall (i) name Owner,
the Financing trustee or collateral agent, and the holders of the notes or other debt instruments purchased under the Financing documents as additional insureds, except for insurance provided pursuant to Section 2.1.3,
(ii) expressly reference the Project Site and (iii) expressly provide that no less than sixty (60) days prior written notice by certified mail shall be given to Owner in the event of material alteration, cancellation or non-renewal of
the coverage evidenced by such certificate, except notice of cancellation for failure to pay any required premium which shall be furnished no less than ten (10) days prior to any such cancellation. Owner shall not issue payment to Contractor
for any portion of the Work unless Contractors current certificates of insurance are on file and reasonably acceptable to Owner.

5
      In no event shall any failure of Owner to receive Contractors certificates of insurance required hereof or to demand receipt of such certificates of insurance be construed as a waiver of Contractors
obligations to obtain insurance pursuant to these insurance requirements. The obligation of Contractor to procure and maintain any insurance required by the provisions of this Appendix is a separate responsibility of Contractor and independent of
the duty to furnish a certificate of insurance of any such insurance policies.



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Exhibit 10.51 to Form 10-Q for the Quarter Ended September 30, 2008 filed by

ADA-ES, Inc. (File No. 000-50216) on November 7, 2008



6    Neither Party shall amend the insurance policies so as to reduce or limit coverages, increase deductibles or otherwise adversely
affect the rights and coverages of the insured under such policies or allow the required insurance coverages to lapse without the other Partys prior written approval thereto.

7     Should a notice of insurance cancellation be issued for non-payment of premiums or any part thereof with respect to insurance
to be provided by Contractor hereunder, or should Contractor fail to provide and maintain certificates for such insurance as set forth herein, Owner shall have the right, but shall not be obligated, to pay such coverage and to deduct such payment
from any sums that may be due or become due to the Contractor, or to seek reimbursement for said payments from Contractor, which sums shall be due and payable immediately upon receipt by Contractor of an invoice therefore from Owner.

8     All Contractors certificates of insurance required pursuant to this Agreement must be sent to Owner at the address for
notices to Owner set forth in the Agreement.

9     In the event of failure of Contractor to furnish and maintain the
insurance required of it pursuant to this Appendix and to furnish satisfactory evidence thereof, Owner shall have the right to secure and maintain the same for all parties on behalf of Contractor who agrees to furnish all necessary information to
place the insurance coverage and to pay the cost thereof to Owner immediately upon presentation of an invoice and reasonable cost substantiation therefore.

10     Each Party further agrees to cooperate fully with the other Partys insurance representatives and/or risk manager in providing any necessary insurance data and information as requested
by Owner and to, complete any associated documents furnished by Owner throughout the duration of the project or until this Agreement is terminated.

11     A Party entitled to or desiring recovery of insurance proceeds under any insurance policy (such Party hereinafter defined as the Claimant) shall be solely responsible for initiating and pursuing
such claim. A Claimant who is unsuccessful in obtaining insurance proceeds shall not be entitled to relief from the other Party to this Agreement or to any adjustment, modification or relief of or from its obligations under this Agreement as a
result of the denial of such claim. If both Owner and Contractor initiate claims under an insurance policy and such claims exceed the total liability limit of such insurance policy, Owner and Contractor shall revise their respective claims by
amounts proportionate to the relative amounts of their claims so that the total amount of their claims equals the total liability limit.



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Exhibit 10.51 to Form 10-Q for the Quarter Ended September 30, 2008 filed by

ADA-ES, Inc. (File No. 000-50216) on November 7, 2008



12     Except as provided in Section 1.1 and Section 1.2, a Claimant is solely responsible for the payment or
cost of any and all deductible amounts applicable under the insurance policy to which its claim relates, except that Contractor shall be responsible for all deductible amounts under Section 3.4 in excess of $250,000 on a per loss basis and
Contractor shall be responsible for the first $250,000 of a deductible to the extent that the loss is caused by Contractors fault or negligence.

13     Contractors liability and indemnification of Company, as defined within this agreement, shall not be relieved or diminished by securing insurance coverage in accordance with the
requirements herein or by Companys approval of certificates of insurance or policies. Any acceptance of insurance coverage by Company shall not be construed as accepting in any way deficiencies in the insurance.

14     Contractor agrees to cooperate with Owner to make any changes or additions to the insurance provisions set forth in this
Appendix as are reasonably required in connection with the Financing (including, without limitation, requirements regarding additional insured status, notice of cancellation or certificates of insurance), provided that any resulting costs to
Contractor of increased coverage shall be reimbursable by Owner and provided further that no such requirements shall materially adversely affect Contractors risk exposure.

15     Contractor shall ensure that full disclosure (to the extent that such disclosure is within Contractors control) is made
to the insurance companies providing insurance coverage for the insurance described in Section 1(the Insurers), of: (i) all information which the Insurers specifically request to be disclosed, (ii) all
information which is of a type which insurance brokers in relation to the relevant policy advise should be disclosed to the Insurers, (iii) reports required by the Insurers, (iv) details of any significant problems encountered in relation
to the Work and (v) all other information which Contractor acting in good faith could reasonably consider to be material to the relevant insurance coverage. Contractor shall implement appropriate internal reporting procedures to ensure that
full disclosure as required by this Section 17 is made by Contractor.

16     Contractor shall promptly
notify Owner of any actual or potential claim under any of the insurance described in Section 1. Each such notice shall be accompanied by the available details of the incident giving rise to the claims. Contractor shall provide all such
assistance as may be required for the preparation and negotiation of any claims under any insurance maintained hereunder by Owner.



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Exhibit 10.51 to Form 10-Q for the Quarter Ended September 30, 2008 filed by

ADA-ES, Inc. (File No. 000-50216) on November 7, 2008



17     Neither Party shall take or fail to take any action which will reasonably entitle any insurer to refuse to pay any claim under
any insurance policy maintained under or pursuant to this Agreement.

18     Contractor hereby waives, and shall cause
all insurers and Subcontractors and their respective insurers, to waive all rights of recovery against Owner Indemnified Parties, for any and all claims, actions, liabilities and causes of action Contractor or any Subcontractor may have by virtue of
damage to Contractors or Subcontractors property not forming a permanent part of the Project Site, resulting from operations occurring in connection with the Work.

19     Contractor shall require all subcontractors and others working on the site for Contractor to carry insurance of the types and
in amounts in accordance with Contractors practices and shall in no circumstance allow uninsured subcontractors or other persons to perform work on the Project Site.



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Exhibit 10.51 to Form 10-Q for the Quarter Ended September 30, 2008 filed by

ADA-ES, Inc. (File No. 000-50216) on November 7, 2008



APPENDIX R

Engineering, Procurement,
Construction (home office) Engineering Time and Material Cost

The following cost basis will be used to accommodate engineering scope changes in the event
a lump sum cost can not be agreed in accordance with Section 5.1.5.



| |  |  | All home office salaried and hourly engineering, procurement, estimating, project management, project controls and construction personnel work hours will be
reimbursable at the actual W2 rates of the employees, multiplied by a 1.90 multiplier.
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| |  |  | An additional charge of $6.00 per home office engineering hour expended will be invoiced for support service expenses, including computers, design software,
printing, telephone, postage, etc.
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| |  |  | For all non-engineering hours expended a charge of $1.00 per home office hour will be invoiced to cover the cost of telephone, postage, etc.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Per-diem expenses and all travel expenses per Contractor standard policies will be reimbursable at cost without markup.
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| |  |  | A fee of $10 per all non-engineering work hours will be invoiced.
| | - |  | -----------------------------------------------------------------



| |  |  | A charge of 0.6% will be applied to all invoices to cover the cost of corporate selling, general and administrative expenses (i.e., SG&A).
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------