Common use of Certain Additional Defined Terms Clause in Contracts

Certain Additional Defined Terms. In addition to such terms as are defined in the preamble of and the recitals to this Agreement and in Section 14.1, the following terms are used in this Agreement as defined in the Articles or Sections set forth opposite such terms: Defined Term Reference 2005 Financial Statements Section 4.9(a) AAA Section 13.1(d)(i) Adjusted Purchase Price Section 1.2 Allocation Section 8.8(d) Basic Documents Section 4.14(b) Buyer Introduction Buyer’s Title Review Section 9.1(a) CERCLA Section 4.20 Chief Holdings Introduction Chief Midstream Holdings Introduction Closing Article II Closing Date Article II COBRA Section 8.7 Company Introduction Company Contracts Section 4.14(a) Damages Section 12.2 Deductible Amount Section 9.2 Defensible Title Section 9.1(d)(i) Disputes Section 13.1(a) Environmental Liabilities Section 4.20 Escrow Agent Section 12.10 Escrow Agreement Section 12.10 Escrow Amount Section 12.10 Escrow Deposit Section 1.4(a) Escrow Term Section 12.10 Examination Period Section 9.1(a) Excluded Assets Section 8.15 Final Settlement Statement Section 1.3(d) Financial Statements Section 4.9(a) HSR Act Section 8.16 Indemnified Party Section 12.5 Indemnifying Party Section 12.5 Independent Expert Section 13.1(c) Interim Financial Statements Section 4.9(a) Interests Recital A 49 Defined Term Reference Midstream Reorganization Section 1.5 Midstream 2005 Financial Statements Section 4.9(b) Midstream Financial Statements Section 4.9(b) Midstream Interim Financial Statements Section 4.9(b) NGA Section 4.15 NGPA Section 4.15 Notice Period Section 12.5 Permitted Encumbrances Section 9.1(d)(ii) Post-Closing Adjusted Purchase Price Section 1.3(d) Purchase Price Section 1.2 Regulatory Agencies Section 4.24 Remedies for Title Defects Section 9.1(b) Rules Section 13.1(d)(i) SEC Section 8.19 Sellers Introduction Sellers’ Representative Introduction Title Defect Section 9.1(d)(iii) Title Defect Amount Section 9.1(c) Title Defect Notice Section 9.1(b) Title Defect Property Section 9.1(b) Transition Services Agreement Section 10.1(h)

Certain Additional Defined Terms. In addition to such terms as are defined in the preamble of and the recitals to this Agreement and in Section 14.113.1, the following terms are used in this Agreement as defined in the Articles or Sections set forth opposite such terms: Defined Term Reference 2005 Financial Statements Accounting Dispute Section 4.9(a2.3(c) AAA Accounting Referee Section 13.1(d)(i2.3(c) Adjusted Purchase Price Section 1.2 Allocation 2.1 Allocated Value Section 8.8(d8.1(c)(i) Assignment Section 9.1(f) Basic Documents Section 4.14(b4.7 Buyer's Environmental Consultant Section 8.2(a) Buyer Introduction Buyer’s 's Environmental Review Section 8.2(a) Buyer's Losses Section 11.2 Buyer's Title Review Section 9.1(a8.1(a) CERCLA Section 4.20 Chief Holdings Introduction Chief Midstream Holdings Introduction Closing Article II III Closing Date Article II COBRA III Cure Period Section 8.7 Company Introduction Company Contracts 8.4(c) Defect Dispute Section 4.14(a) Damages Section 12.2 Deductible Amount Section 9.2 8.3 Defensible Title Section 9.1(d)(i8.1(d)(i) Disputes Deposit Section 13.1(a2.4(a) Environmental Liabilities Defect Section 4.20 Escrow Agent 8.2(e)(i) Environmental Defect Notice Section 12.10 Escrow Agreement 8.2(c) Environmental Defect Value Section 12.10 Escrow Amount 8.2(e)(ii) Environmental Information Section 12.10 Escrow Deposit Section 1.4(a8.2(b) Escrow Term Section 12.10 Examination Period Section 9.1(a8.1(a) Excluded Assets Section 8.15 Final Settlement Statement Section 1.3(d) Financial Statements Section 4.9(a) HSR Act Section 8.16 1.2 Indemnified Party Section 12.5 11.5 Indemnifying Party Section 12.5 11.5 Independent Expert Section 13.1(c) Interim Financial Statements Section 4.9(a) Interests Recital A 49 Defined Term Reference Midstream Reorganization Section 1.5 Midstream 2005 Financial Statements Section 4.9(b) Midstream Financial Statements Section 4.9(b) Midstream Interim Financial Statements Section 4.9(b) NGA Section 4.15 NGPA Section 4.15 8.3 Notice Period Section 12.5 11.5 Oil and Gas Properties Section 1.1 Permitted Encumbrances Section 9.1(d)(ii8.1(d)(ii) Post-Closing Adjusted Defect Section 8.4(c) Properties Section 1.1 Purchase Price Section 1.3(d2.1 Records Section 1.1(f) Purchase Price Section 1.2 Regulatory Agencies Section 4.24 Remedies for Title Defects Section 9.1(b8.1(b) Request Date Section 2.3(c) Required Payee Section 7.13 Restricted Period Section 12.9 Restricted Person Section 12.9 Rules Section 13.1(d)(i) SEC 8.3 Scheduled Production Sales Contracts Section 8.19 Sellers Introduction Sellers’ Representative Introduction 4.9 Seller's Losses Section 11.3 Suspended Proceeds Section 7.10 Survival Date Section 11.2 Title Defect Section 9.1(d)(iii8.1(d)(iii) Title Defect Amount Section 9.1(c8.1(c) Title Defect Notice Section 9.1(b8.1(b) Title Defect Property Section 9.1(b) Transition Services Agreement Section 10.1(h8.1(b)

Certain Additional Defined Terms. In addition to such terms as are defined in the preamble of and the recitals to this Agreement and in Section 14.1, the following terms are used in this Agreement as defined in the Articles or Sections set forth opposite such terms: Defined Term Reference 2005 Financial Statements Accounting Dispute Section 4.9(a2.3(c) AAA Accounting Referee Section 13.1(d)(i2.3(c) Adjusted Purchase Price Section 1.2 Allocation 2.1 Allocated Value Section 8.8(d8.1(c)(i) Basic Documents Assignment Section 4.14(b9.1(f) Buyer Introduction Buyer’s Environmental Consultant Section 8.2(a) Buyer’s Environmental Review Section 8.2(a) Buyer’s Losses Section 11.2 Buyer’s Title Review Section 9.1(a8.1(a) CERCLA Section 4.20 Chief Holdings Introduction Chief Midstream Holdings Introduction Closing Article II III Closing Date Article II COBRA III Cure Period Section 8.7 Company Introduction Company Contracts 8.4(c) Defect Dispute Section 4.14(a8.3 Defects Escrow Section 8.4(c) Damages Defects Escrow Agent Section 12.2 Deductible Amount 8.4(c) Defects Escrow Agreement Section 9.2 8.4(c) Defensible Title Section 9.1(d)(i8.1(d)(i) Disputes Deposit Section 13.1(a2.4(a) Environmental Liabilities Defect Section 4.20 Escrow Agent 8.2(e)(i) Environmental Defect Notice Section 12.10 Escrow Agreement 8.2(c) Environmental Defect Value Section 12.10 Escrow Amount 8.2(e)(ii) Environmental Information Section 12.10 Escrow Deposit Section 1.4(a8.2(b) Escrow Term Section 12.10 Examination Period Section 9.1(a8.1(a) Excluded Assets Section 8.15 Final Settlement Statement Section 1.3(d) Financial Statements Section 4.9(a) HSR Act Section 8.16 1.2 Indemnified Party Section 12.5 11.5 Defined Term Reference Indemnifying Party Section 12.5 11.5 Independent Expert Section 13.1(c) Interim Financial Statements Section 4.9(a) Interests Recital A 49 Defined Term Reference Midstream Reorganization Section 1.5 Midstream 2005 Financial Statements Section 4.9(b) Midstream Financial Statements Section 4.9(b) Midstream Interim Financial Statements Section 4.9(b) NGA Section 4.15 NGPA Section 4.15 8.3 Notice Period Section 12.5 11.5 Oil and Gas Properties Section 1.1 Permitted Encumbrances Section 9.1(d)(ii8.1(d)(ii) Post-Closing Adjusted Defect Section 8.4(c) Properties Section 1.1 Purchase Price Section 1.3(d2.1 Records Section 1.1(f) Purchase Price Section 1.2 Regulatory Agencies Section 4.24 Remedies for Title Defects Section 9.1(b8.1(b) Request Date Section 2.3(c) Rules Section 13.1(d)(i) SEC 8.3 Scheduled Production Sales Contracts Section 8.19 Sellers Introduction 4.9 Sellers’ Representative Introduction Losses Section 11.3 Suspended Proceeds Section 7.11 Survival Date Section 11.2(b) Title Defect Section 9.1(d)(iii8.1(d)(iii) Title Defect Amount Section 9.1(c8.1(c) Title Defect Notice Section 9.1(b8.1(b) Title Defect Property Section 9.1(b) Transition Services Agreement Section 10.1(h8.1(b)

Certain Additional Defined Terms. In addition to such terms as are defined in the preamble of and the recitals to this Agreement and in Section 14.1, the following terms are used in this Agreement as defined in the Articles or Sections set forth opposite such terms: Defined Term Reference 2005 Financial Statements Section 4.9(a) AAA Section 13.1(d)(i) Accounting Dispute Section 1.3(e) Accounting Referee Section 1.3(e) Additional Transportation Costs Section 12.10(a) Adjusted Purchase Price Section 1.2 Allocated Value Section 9.1(c)(i) Allocation Section 8.8(d8.8(e) Basic Documents Anadarko Section 4.14(b9.1(d)(i)(B) Buyer Introduction Audited Financial Statements Section 4.8 Bridge Facility Section 8.12 Buyer’s 's Environmental Consultant Section 9.2(a) Buyer's Environmental Review Section 9.2(a) Buyer's Title Review Section 9.1(a) CERCLA Section 4.20 Chief Holdings Introduction Chief Midstream Holdings Introduction Closing Article II Closing Date Article II COBRA Closing Date Adjusted Working Capital Amount Section 8.7 Company Introduction 1.3(d) Company Contracts Section 4.14(a4.14 (a) Cure Period Section 9.5(b) Damages Section 12.2 Deductible Amount Defects Escrow Section 9.2 9.5(a) Defects Escrow Agent Section 9.5(a) Defects Escrow Agreement Section 9.5(a) Defensible Title Section 9.1(d)(i) Disputes Section 13.1(a) Environmental Liabilities Defect Section 4.20 Escrow Agent 9.2(e)(i) Environmental Defect Notice Section 12.10 Escrow Agreement 9.2(c) Environmental Defect Value Section 12.10 Escrow Amount 9.2(e)(ii) Environmental Information Section 12.10 Escrow Deposit Section 1.4(a9.2(b) Escrow Term Section 12.10 Examination Period Section 9.1(a) Excluded Assets Exploration Agreement Section 8.15 Final Settlement Statement Section 1.3(d9.1(d)(i)(B) Financial Statements Section 4.9(a) HSR Act Section 8.16 4.8 Indemnified Party Section 12.5 12.4 Indemnifying Party Section 12.5 12.4 Independent Expert Section 13.1(c13.1(b) Interim Financial Statements Balance Sheet Section 4.9(a4.8 Xxxx-XxXxx Dispute Section 12.10(a) Interests Recital A 49 Defined Term Reference Midstream Reorganization Net Tax Benefit Section 1.5 Midstream 2005 Financial Statements Section 4.9(b) Midstream Financial Statements Section 4.9(b) Midstream Interim Financial Statements Section 4.9(b) NGA Section 4.15 NGPA Section 4.15 12.8 Notice Period Section 12.5 12.4 Oil and Gas Contracts Section 4.14(b) Permitted Encumbrances Section 9.1(d)(ii) Post-Closing Adjusted Purchase Price Working Capital Amount Section 1.3(d) Post-Closing Defect Section 9.5(a) Purchase Price Section 1.2 Regulatory Agencies Section 4.24 Remedies for Title Defects Section 9.1(b) Request Date Section 1.3(e) Rules Section 13.1(d)(i13.1(b)(i) SEC Survival Period Section 8.19 Sellers Introduction Sellers’ Representative Introduction 12.1(a) Title Defect Section 9.1(d)(iii) Title Defect Amount Section 9.1(c) Title Defect Notice Section 9.1(b) Title Defect Property Section 9.1(b) Transition Services Agreement Ultimate Per Unit Cost Section 10.1(h)12.10(a) Unaudited Financial Statements Section 4.9

Certain Additional Defined Terms. In addition to such terms as are defined in the preamble of and the recitals to this Agreement and in Section 14.1, the following terms are used in this Agreement as defined in the Articles or Sections set forth opposite such terms: Defined Term Reference 2005 Financial Statements Accounting Dispute Section 4.9(a2.3(c) AAA Accounting Referee Section 13.1(d)(i2.3(c) Adjusted Purchase Price Section 1.2 Allocation 2.1 Allocated Value Section 8.8(d8.1(c)(i) Basic Documents Assignment Section 4.14(b9.1(f) Buyer Introduction Buyer’s Title Environmental Consultant Section 8.2(a) Buyer’s Environmental Review Section 9.1(a8.2(a) CERCLA Buyer’s Losses Section 4.20 Chief Holdings Introduction Chief Midstream Holdings Introduction 11.2 LP Closing Article II III LP Closing Date Article II COBRA III Cure Period Section 8.7 Company Introduction Company Contracts 8.4(c) Defect Dispute Section 4.14(a8.3 Defects Escrow Section 8.4(c) Damages Defects Escrow Agent Section 12.2 Deductible Amount 8.4(c) Defects Escrow Agreement Section 9.2 8.4(c) Defensible Title Section 9.1(d)(i) Disputes Section 13.1(a8.1(d)(i) Environmental Liabilities Defect Section 4.20 Escrow Agent 8.2(e)(i) Environmental Defect Notice Section 12.10 Escrow Agreement 8.2(c) Environmental Defect Value Section 12.10 Escrow Amount 8.2(e)(ii) Environmental Information Section 12.10 Escrow Deposit Section 1.4(a8.2(b) Escrow Term Section 12.10 Examination Period Section 9.1(a8.1(a) LP Excluded Assets Section 8.15 Final Settlement Statement Section 1.3(d) Financial Statements Section 4.9(a) HSR Act Section 8.16 1.2 Indemnified Party Section 12.5 11.5 Indemnifying Party Section 12.5 11.5 Independent Expert Section 13.1(c) Interim Financial Statements Section 4.9(a) Interests Recital A 49 Defined Term Reference Midstream Reorganization Section 1.5 Midstream 2005 Financial Statements Section 4.9(b) Midstream Financial Statements Section 4.9(b) Midstream Interim Financial Statements Section 4.9(b) NGA Section 4.15 NGPA Section 4.15 8.3 Notice Period Section 12.5 11.5 LP Oil and Gas Properties Section 1.1 Permitted Encumbrances Section 9.1(d)(ii8.1(d)(ii) Post-LP Closing Adjusted Defect Section 8.4(c) LP Properties Section 1.1 Purchase Price Section 1.3(d2.1 Records Section 1.1(f) Purchase Price Request Date Section 1.2 Regulatory Agencies Section 4.24 Remedies for Title Defects Section 9.1(b2.3(c) Rules Section 13.1(d)(i) SEC Section 8.19 Sellers Introduction 8.3 LP Sellers’ Representative Introduction Title Defect Losses Section 9.1(d)(iii) Title Defect Amount 11.3 Suspended Proceeds Section 9.1(c) Title Defect Notice 7.11 Survival Date Section 9.1(b) Title Defect Property Section 9.1(b) Transition Services Agreement Section 10.1(h11.2(b)

Certain Additional Defined Terms. In addition to such terms as are defined in the preamble of and the recitals to this Agreement and in Section 14.1, the following terms are used in this Agreement as defined in the Articles or Sections set forth opposite such terms: Defined Term Reference 2005 Financial Statements Accounting Dispute Section 4.9(a2.3(c) AAA Accounting Referee Section 13.1(d)(i2.3(c) Adjusted Purchase Price Section 1.2 Allocation 2.1 Allocated Value Section 8.8(d8.1(c)(i) Basic Documents Assignment Section 4.14(b9.1(f) Buyer Introduction Buyer’s Environmental Consultant Section 8.2(a) Buyer’s Environmental Review Section 8.2(a) Buyer’s Losses Section 11.2 Buyer’s Title Review Section 9.1(a8.1(a) CERCLA Section 4.20 Chief Holdings Introduction Chief Midstream Holdings Introduction Closing Article II III Closing Date Article II COBRA III Cure Period Section 8.7 Company Introduction Company Contracts 8.4(c) Defect Dispute Section 4.14(a8.3 Defects Escrow Section 8.4(c) Damages Defects Escrow Agent Section 12.2 Deductible Amount 8.4(c) Defects Escrow Agreement Section 9.2 8.4(c) Defensible Title Section 9.1(d)(i8.1(d)(i) Disputes Deposit Section 13.1(a2.4(a) Environmental Liabilities Defect Section 4.20 Escrow Agent 8.2(e)(i) Environmental Defect Notice Section 12.10 Escrow Agreement 8.2(c) Environmental Defect Value Section 12.10 Escrow Amount 8.2(e)(ii) Environmental Information Section 12.10 Escrow Deposit Section 1.4(a8.2(b) Escrow Term Section 12.10 Examination Period Section 9.1(a8.1(a) Excluded Assets Section 8.15 Final Settlement Statement Section 1.3(d) Financial Statements Section 4.9(a) HSR Act Section 8.16 1.2 Indemnified Party Section 12.5 11.5 43 Defined Term Reference Indemnifying Party Section 12.5 11.5 Independent Expert Section 13.1(c) Interim Financial Statements Section 4.9(a) Interests Recital A 49 Defined Term Reference Midstream Reorganization Section 1.5 Midstream 2005 Financial Statements Section 4.9(b) Midstream Financial Statements Section 4.9(b) Midstream Interim Financial Statements Section 4.9(b) NGA Section 4.15 NGPA Section 4.15 8.3 Notice Period Section 12.5 11.5 Oil and Gas Properties Section 1.1 Permitted Encumbrances Section 9.1(d)(ii8.1(d)(ii) Post-Closing Adjusted Defect Section 8.4(c) Properties Section 1.1 Purchase Price Section 1.3(d2.1 Records Section 1.1(f) Purchase Price Section 1.2 Regulatory Agencies Section 4.24 Remedies for Title Defects Section 9.1(b8.1(b) Request Date Section 2.3(c) Rules Section 13.1(d)(i) SEC 8.3 Scheduled Production Sales Contracts Section 8.19 Sellers Introduction 4.9 Sellers’ Representative Introduction Losses Section 11.3 Suspended Proceeds Section 7.11 Survival Date Section 11.2(b) Title Defect Section 9.1(d)(iii8.1(d)(iii) Title Defect Amount Section 9.1(c8.1(c) Title Defect Notice Section 9.1(b8.1(b) Title Defect Property Section 9.1(b) Transition Services Agreement Section 10.1(h8.1(b)

Certain Additional Defined Terms. In addition to such terms as are defined in the preamble of and the recitals to this Agreement and in Section 14.118.1, the following terms are used in this Agreement as defined in the Articles or Sections set forth opposite such terms: 52 Term Defined Term Reference 2005 Financial Statements Section 4.9(a) AAA Section 13.1(d)(i) Adjusted Purchase Price Section 1.2 Allocation 2.2 Adjustment Amount Section 8.8(d3.5 AFE Section 4.13 Agreement Preamble Allocated Value Section 3.1(c)(i) Basic Assets Section 1.1 Assumed Obligations Section 11.4(a) Business Days Section 2.3(a) Business Employees Section 11.12(a) Claim Notice Section 11.4(e)(i) Closing Section 10.1 Closing Date Section 10.1 Code Section 4.5 Continuing Employee Section 11.12(c) Cure Period Section 3.6(b) Deductible Amount Section 3.4 Defects Escrow Section 3.6(a) Defects Escrow Agent Section 3.6(a) Defects Escrow Agreement Section 3.6(a) Defects Escrow Amount Section 3.6(a) Defensible Title Section 3.1(d)(i) Deferred Adjustment Claim Section 3.5 Deferred Matters Date Section 3.5 Deposit Section 2.1(c) Deposit Escrow Agreement Section 2.1(e) Disputes Section 17.1(a) Documents Section 4.14(b14.1 Effective Time Section 1.1 Entech Section 1.2 Environmental Claims Section 16.2 Environmental Defect Section 3.2(e)(i) Buyer Introduction BuyerEnvironmental Defect Notice Section 3.2(c) Environmental Defect Value Section 3.2(e)(ii) Environmental Information Section 3.2(b) Escrow Agent Section 2.1(c) Examination Period Section 3.1(a) Estimated Adjusted Purchase Price Section 2.3(a) Excluded Assets Section 1.1 Filings Section 17.24 Indemnified Party Section 11.4(e)(i) Indemnifying Party Section 11.4(e)(i) Independent Expert Section 17.1(a) Interim Period Section 6.1 Leasehold Interests Section 1.1(a) Leases Section 4.17 Losses Section 7.4 Material Contracts Section 4.7 MMS Section 5.7 Noble Heading Noble Indemnified Parties Section 7.4 Noble Internal XXXXx Section 11.4(f) Orders and Contracts Section 1.1(b)(iii) Overheld Amount Section 3.5 Party and Parties Preamble Permitted Encumbrances Section 3.1(d)(ii) Platforms Section 1.1(b)(i) Post-Closing Defect Section 3.6(a) Pref Right Notice Section 3.9(a) Property Taxes Section 13.1 Purchase Price Section 2.1(a) Purchaser Heading Purchaser Indemnified Parties Section 11.4(c) Purchaser Party Section 17.24 Purchaser’s Environmental Consultant Section 3.2(a) Purchaser’s Environmental Review Section 3.2(a) Purchaser’s Estimate Section 3.5 Purchaser’s Title Review Section 9.1(a3.1(a) CERCLA Records Section 4.20 Chief Holdings Introduction Chief Midstream Holdings Introduction Closing Article II Closing Date Article II COBRA Section 8.7 Company Introduction Company Contracts Section 4.14(a1.1(c) Damages Section 12.2 Deductible Resolved Amount Section 9.2 Defensible Title Section 9.1(d)(i) Disputes Section 13.1(a) Environmental Liabilities Section 4.20 Escrow Agent Section 12.10 Escrow Agreement Section 12.10 Escrow Amount Section 12.10 Escrow Deposit Section 1.4(a) Escrow Term Section 12.10 Examination Period Section 9.1(a) Excluded Assets Section 8.15 Final Settlement Statement Section 1.3(d) Financial Statements Section 4.9(a) HSR Act Section 8.16 Indemnified Party Section 12.5 Indemnifying Party Section 12.5 Independent Expert Section 13.1(c) Interim Financial Statements Section 4.9(a) Interests Recital A 49 Defined Term Reference Midstream Reorganization Section 1.5 Midstream 2005 Financial Statements Section 4.9(b) Midstream Financial Statements Section 4.9(b) Midstream Interim Financial Statements Section 4.9(b) NGA Section 4.15 NGPA Section 4.15 Notice Period Section 12.5 Permitted Encumbrances Section 9.1(d)(ii) Post-Closing Adjusted Purchase Price Section 1.3(d) Purchase Price Section 1.2 Regulatory Agencies Section 4.24 Remedies for Title Defects Section 9.1(b) 3.5 Rules Section 13.1(d)(i17.1(b)(i) SEC Section 8.19 Sellers Introduction Sellers’ Representative Introduction Title Defect Section 9.1(d)(iii3.1(d)(iii) Title Defect Amount Section 9.1(c3.1(c) Title Defect Asset Section 3.1(b) Title Defect Notice Section 9.1(b3.1(b) Title Defect Property Third Party Section 9.1(b11.4(a)(i) Transition Services Agreement Third Party Claim Section 10.1(h)11.4(e)(i) Xxxxx Section 1.1(b)(i) EXECUTED on May 15, 2006, to be effective for all purposes, however, as of the Effective Date. NOBLE ENERGY, INC. By: Name: Xxxxx X. Xxxxxx Title: Senior Vice President XXXXXXX RESOURCES LP By Xxxxxxx Resources GP LLC, Its General Partner By: Name: Title:

Certain Additional Defined Terms. In addition to such terms as are defined in the preamble of and the recitals to this Agreement and in Section 14.11.1, the following terms are used in this Agreement as defined in the Articles or Sections set forth opposite such terms: Defined Term Reference 2005 Additional Listing Application Section 7.14 Adjusted Cash Purchase Price Section 2.3(b) Adjusted Parent Shares Section 2.3(c) Arbitration Decision Section 16.3(d) Arbitration Notice Section 16.3(a) Arbitrator Section 16.3(a) Assignment Section 10.2(a) Audited Financial Statements Section 4.9(a4.10 Bank Section 2.4(a) AAA Section 13.1(d)(i) Adjusted Base Purchase Price Section 1.2 Allocation 2.2 Buyer Preamble Buyer Indemnitees Section 8.8(d) Basic Documents Section 4.14(b) 13.2 Defined Term Reference Buyer Introduction Parties Preamble Buyer’s Title Indemnified Claims Section 13.1 Buyer’s Review Section 9.1(a) CERCLA 8.1 Cash Purchase Price Section 4.20 Chief Holdings Introduction Chief Midstream Holdings Introduction 2.2 Closing Article II Section 10.1 Closing Date Article II COBRA Section 8.7 10.1 Common Interest Parties Section 17.15 Company Introduction Company Contracts Preamble Consents Section 4.14(a) 4.22 Damages Section 12.2 Deductible Amount 7.2 Defect Notice Section 9.2 8.2 Defensible Title Section 9.1(d)(i8.4 Deposit Section 2.4(a) Deposit Account Section 2.4(a) Disputes Section 13.1(a16.1 Environmental Defect Section 8.7(a) Environmental Liabilities Section 4.20 Escrow Agent Section 12.10 Escrow Agreement Section 12.10 Escrow Defect Amount Section 12.10 Escrow Deposit 8.7(a) Environmental Defect Threshold Section 1.4(a8.7(a) Escrow Term Section 12.10 Examination Period Section 9.1(a) Excluded Assets Section 8.15 8.1 Execution Date Preamble Final Settlement Statement Section 1.3(d) 12.3 Finance Related Parties Section 7.19 Financial Statements Section 4.9(a) 4.10 HSR Act Section 8.16 Indemnified Party 7.12 Indemnity Deductible Section 12.5 Indemnifying Party 13.4(a) Indemnity Escrow Account Section 12.5 Independent Expert 2.4(b) Indemnity Escrow Agreement Section 13.1(c2.4(b) Initial Settlement Statement Section 12.2 Inspection Indemnitees Section 7.2 Insurance Policies Section 4.24 Interests Recitals Interim Financial Statements Section 4.9(a4.10 Joint Instructions Section 2.4(a) Interests Recital A 49 Lock-Up Period Section 7.16 Outstanding Capital Commitments Section 4.19 Parent Preamble Parent SEC Reports Section 6.14 Parent Shares Section 2.2 Parties Preamble Permitted Encumbrances Section 8.5 Property Records Section 7.1 Purchase Price Allocation Section 7.8(e)(i) Registration Rights Agreement Section 10.2(g) Required Financial Information Section 7.18(b) Required Permit Section 4.26 Defined Term Reference Midstream Reorganization Seller Preamble Seller Contracts Section 1.5 Midstream 2005 Financial Statements 7.13(a) Seller Indemnitees Section 4.9(b13.1 Seller Related Parties Section 7.19 Seller’s Indemnified Claims Section 13.1 Site Assessment Section 7.1 Surviving Provisions Section 11.2(a) Midstream Financial Statements T&K Section 4.9(b17.15 Target Closing Date Section 10.1 Tail Policy Section 7.7(b) Midstream Interim Financial Statements Termination Date Section 4.9(b11.1(b)(i) NGA Third Party Claim Section 4.15 NGPA 13.6(b) Third-Party Operators Section 4.15 Notice Period Section 12.5 Permitted Encumbrances Section 9.1(d)(ii) Post-Closing Adjusted Purchase Price Section 1.3(d) Purchase Price Section 1.2 Regulatory Agencies Section 4.24 Remedies for Title Defects Section 9.1(b) Rules Section 13.1(d)(i) SEC Section 8.19 Sellers Introduction Sellers’ Representative Introduction 7.1 Title Defect Section 9.1(d)(iii) 8.6 Title Defect Amount Section 9.1(c) Title Defect Notice Section 9.1(b) 8.3 Title Defect Property Section 9.1(b) 8.3 Title Defect Threshold Section 8.3 Transition Services Agreement Section 10.1(h)10.2(m) Article II.

Certain Additional Defined Terms. In addition to such terms as are defined in the preamble of and the recitals to this Agreement and in Section 14.113.1, the following terms are used in this Agreement as defined in the Articles or Sections set forth opposite such terms: Defined Term Reference 2005 Financial Statements Accounting Dispute Section 4.9(a2.3(c) AAA Accounting Referee Section 13.1(d)(i2.3(c) Adjusted Purchase Price Section 1.2 Allocation 2.1 Agreed Amount Section 8.8(d10.6 Allocated Value Section 8.1(c)(i) Arbol Resources, Inc. Preamble Assignment Section 9.1(e) Basic Documents Section 4.14(b4.7(a) Buyer Introduction Preamble Buyer Indemnified Losses Section 10.4 Buyer Indemnified Parties Section 10.3 Buyer’s Environmental Consultant Section 8.2(a) Buyer’s Environmental Review Section 8.2(a) Buyer’s Title Review Section 9.1(a8.1(a) CERCLA Claim Section 4.20 Chief Holdings Introduction Chief Midstream Holdings Introduction 10.5 Claim Notice Section 10.5 Claimed Amount Section 10.6 Closing Article II III Closing Date Article II COBRA III Cure Period Section 8.7 Company Introduction Company Contracts 8.4(c) Defect Dispute Section 4.14(a) Damages Section 12.2 Deductible Amount Section 9.2 8.3 Defensible Title Section 9.1(d)(i) Disputes Section 13.1(a8.1(e)(i) Environmental Liabilities Defect Section 4.20 Escrow Agent 8.2(e)(i) Environmental Defect Notice Section 12.10 Escrow Agreement 8.2(c) Environmental Defect Value Section 12.10 Escrow Amount 8.2(e)(ii) Environmental Information Section 12.10 Escrow Deposit 8.2(b) Equitable Relief Provisions Section 1.4(a) Escrow Term Section 12.10 12.3 Examination Period Section 9.1(a8.1(a) Excluded Assets Section 8.15 Final Settlement Statement Date Section 1.3(d2.3(c) Financial Statements Section 4.9(a) HSR Act Section 8.16 Indemnified Party Section 12.5 Indemnifying Party Section 12.5 Independent Expert Section 13.1(c) Interim Financial Statements 8.3 Losses Section 4.9(a) Interests Recital A 49 Defined Term Reference Midstream Reorganization Section 1.5 Midstream 2005 Financial Statements Section 4.9(b) Midstream Financial Statements Section 4.9(b) Midstream Interim Financial Statements Section 4.9(b) NGA Section 4.15 NGPA Section 4.15 Notice Period Section 12.5 10.1 Party; Parties Preamble Permitted Encumbrances Section 9.1(d)(ii8.1(e)(ii) Phase II Extensions Section 8.2(a) Post-Closing Adjusted Purchase Price Section 1.3(d) Purchase Price Section 1.2 Regulatory Agencies Section 4.24 Remedies for Title Defects Section 9.1(b) Rules Section 13.1(d)(i) SEC Section 8.19 Sellers Introduction Sellers’ Representative Introduction Title Defect Section 9.1(d)(iii8.4(c) Title Defect Amount Property Taxes Section 9.1(c7.13(a) Title Defect Notice Proposals Section 9.1(b) Title Defect Property Section 9.1(b) Transition Services Agreement Section 10.1(h6.2(a)

Certain Additional Defined Terms. In addition to such terms as are defined in the preamble of and the recitals to this Agreement and in Section 14.113.1, the following terms are used in this Agreement as defined in the Articles or Sections set forth opposite such terms: Defined Term Reference 2005 Financial Statements Accounting Dispute Section 4.9(a2.3(c) AAA Accounting Referee Section 13.1(d)(i2.3(c) Adjusted Purchase Price Section 1.2 Allocation 2.1 Allocated Value Section 8.8(d8.1(c)(i) Assignment Section 9.1(f) Basic Documents Section 4.14(b4.7 Buyer Hedge Period Section 7.14(b) Buyer Introduction Buyer’s 's Environmental Consultant Section 8.2(a) Buyer's Environmental Review Section 8.2(a) Buyer's Losses Section 11.2 Buyer's Title Review Section 9.1(a8.1(a) CERCLA Section 4.20 Chief Holdings Introduction Chief Midstream Holdings Introduction Closing Article II III Closing Date Article II COBRA III Cure Period Section 8.7 Company Introduction Company Contracts 8.4(c) Defect Dispute Section 4.14(a8.3 Defects Escrow Section 8.4(c) Damages Defects Escrow Agent Section 12.2 Deductible Amount 8.4(c) Defects Escrow Agreement Section 9.2 8.4(c) Defensible Title Section 9.1(d)(i8.1(d)(i) Disputes Deposit Section 13.1(a2.4(c) Environmental Liabilities Defect Section 4.20 Escrow Agent 8.2(e)(i) Environmental Defect Notice Section 12.10 Escrow Agreement 8.2(c) Environmental Defect Value Section 12.10 Escrow Amount 8.2(e)(ii) Environmental Information Section 12.10 Escrow Deposit Section 1.4(a8.2(b) Escrow Term Section 12.10 Examination Period Section 9.1(a8.1(a) Excluded Assets Section 8.15 Final Settlement Statement 1.2 Indemnification Support Deposit Section 1.3(d11.9(a) Financial Statements Indemnification Support Term Section 4.9(a11.9(b) HSR Act Section 8.16 Indemnified Party Section 12.5 11.5 Indemnifying Party Section 12.5 11.5 Independent Expert Section 13.1(c) Interim Financial Statements Section 4.9(a) Interests Recital A 49 Defined Term Reference Midstream Reorganization Section 1.5 Midstream 2005 Financial Statements Section 4.9(b) Midstream Financial Statements Section 4.9(b) Midstream Interim Financial Statements Section 4.9(b) NGA Section 4.15 NGPA Section 4.15 8.3 Notice Period Section 12.5 11.5 Oil and Gas Properties Section 1.1 Permitted Encumbrances Section 9.1(d)(ii8.1(d)(ii) Post-Closing Adjusted Defect Section 8.4(c) Properties Section 1.1 Purchase Price Section 1.3(d) Purchase Price Section 1.2 Regulatory Agencies Section 4.24 2.1 Remedies for Title Defects Section 9.1(b8.1(b) Request Date Section 2.3(c) Required Payee Section 12.11 -39- Defined Term Reference Rules Section 13.1(d)(i) SEC 8.3 Scheduled Production Sales Contracts Section 8.19 Sellers Introduction Sellers’ Representative Introduction 4.9 Seller's Losses Section 11.3 Suspended Proceeds Section 7.11 Survival Date Section 11.2 Title Defect Section 9.1(d)(iii8.1(d)(iii) Title Defect Amount Section 9.1(c8.1(c) Title Defect Notice Section 9.1(b8.1(b) Title Defect Property Section 9.1(b) Transition Services Agreement Section 10.1(h8.1(b)

Certain Additional Defined Terms. In addition to such terms as are defined in the preamble of and the recitals to this Agreement and in Section 14.1, the following terms are used in this Agreement as defined in the Articles or Sections set forth opposite such terms: Defined Term Reference 2005 Financial Statements Accounting Dispute Section 4.9(a2.3(c) AAA Accounting Referee Section 13.1(d)(i2.3(c) Adjusted Purchase Price Section 1.2 Allocation 2.1 Allocated Value Section 8.8(d8.2(b) Basic Documents Assignment Section 4.14(b9.1(f) Buyer Introduction Buyer’s Losses Section 11.2 Buyer’s Title Review Section 9.1(a8.1(a) CERCLA Section 4.20 Chief Holdings Introduction Chief Midstream Holdings Introduction Closing Article II III Closing Date Article II COBRA III Cure Period Section 8.7 Company Introduction Company Contracts 8.5(b) Depth Severance Section 4.14(a8.6(a) Damages Section 12.2 Deductible Depth Severance Amount Section 9.2 8.6(b) Depth Severance Notice Section 8.6(c) Defect Dispute Section 8.4 Defects Escrow Section 8.5(b) Defects Escrow Agent Section 8.5(b) Defects Escrow Agreement Section 8.5(b) Defensible Title Section 9.1(d)(i8.2(c) Disputes Section 13.1(a) Environmental Liabilities Section 4.20 Escrow Agent Section 12.10 Escrow Agreement Section 12.10 Escrow Amount Section 12.10 Escrow Deposit Section 1.4(a2.4(a) Escrow Term Dominion Heritage Leases Section 12.10 4.10 Examination Period Section 9.1(a8.1(a) Excluded Assets Section 8.15 Final Settlement Statement 1.2 Existing Deep Xxxxx Section 1.3(d1.2(b) Financial Statements Extended Examination Period Section 4.9(a8.1(c) HSR Act Holdback Amount Section 8.16 8.6(d) Indemnified Party Section 12.5 11.5 Indemnifying Party Section 12.5 11.5 Independent Expert Section 13.1(c8.4 Lands Section 1.1(b) Interim Financial Statements Material Title Benefit Section 4.9(a8.3(b) Interests Recital A 49 Defined Term Reference Midstream Reorganization Section 1.5 Midstream 2005 Financial Statements Section 4.9(b) Midstream Financial Statements Section 4.9(b) Midstream Interim Financial Statements Section 4.9(b) NGA Section 4.15 NGPA Section 4.15 Notice Period Section 12.5 11.5 Oil and Gas Properties Section 1.1 Permitted Encumbrances Section 9.1(d)(ii8.2(d) Post-Closing Adjusted Defect Section 8.5(b) Properties Section 1.1 Purchase Price Section 1.3(d) Purchase Price 2.1 Records Section 1.2 Regulatory Agencies Section 4.24 Remedies for Title Defects Section 9.1(b1.1(e) Rules Section 13.1(d)(i) SEC Section 8.19 Sellers Introduction 8.4 Sellers’ Representative Introduction Title Defect Losses Section 9.1(d)(iii) Title Defect Amount Section 9.1(c) Title Defect Notice Section 9.1(b) Title Defect Property Section 9.1(b) Transition Services Agreement Section 10.1(h)11.3 Execution Version

Certain Additional Defined Terms. In addition to such terms as are defined in the preamble of and the recitals to this Agreement and in Section 14.1, the following terms are used in this Agreement as defined in the Articles or Sections set forth opposite such terms: Defined Term Reference 2005 Financial Statements Accounting Dispute Section 4.9(a2.3(c) AAA Accounting Referee Section 13.1(d)(i2.3(c) Adjusted Purchase Price Section 1.2 Allocation 2.1 Allocated Value Section 8.8(d8.1(c)(i) Basic Documents Assignment Section 4.14(b9.1(f) Buyer Introduction Buyer’s Environmental Consultant Section 8.2(a) Buyer’s Environmental Review Section 8.2(a) Buyer’s Losses Section 11.2 Buyer’s Title Review Section 9.1(a8.1(a) CERCLA Casualty Deficit Section 4.20 Chief Holdings Introduction Chief Midstream Holdings Introduction 7.6(c) Closing Article II III Closing Date Article II COBRA III Cure Period Section 8.7 Company Introduction Company Contracts 8.5(c) Defect Dispute Section 4.14(a8.3(b) Damages Defects Escrow Section 12.2 Deductible Amount 8.4(a) Defects Escrow Agent Section 9.2 8.4(a) Defects Escrow Agreement Section 8.4(a) Defensible Title Section 9.1(d)(i8.1(d)(i) Disputes Deposit Section 13.1(a2.4(a) Environmental Liabilities Defect Section 4.20 Escrow Agent 8.2(e)(i) Environmental Defect Notice Section 12.10 Escrow Agreement 8.2(c) Environmental Defect Value Section 12.10 Escrow Amount 8.2(e)(ii) Environmental Information Section 12.10 Escrow Deposit Section 1.4(a8.2(b) Escrow Term Section 12.10 Examination Period Section 9.1(a8.1(a) Excluded Assets Section 8.15 Final Settlement Statement Section 1.3(d) Financial Statements Section 4.9(a) HSR Act Section 8.16 1.2 Indemnified Party Section 12.5 11.5 Indemnifying Party Section 12.5 11.5 Independent Expert Section 13.1(c8.3(b) Interim Financial Statements Section 4.9(a) Interests Recital A 49 Defined Term Reference Midstream Reorganization Section 1.5 Midstream 2005 Financial Statements Section 4.9(b) Midstream Financial Statements Section 4.9(b) Midstream Interim Financial Statements Section 4.9(b) NGA Section 4.15 NGPA Section 4.15 Notice Period Section 12.5 11.5 Oil and Gas Properties Section 1.1 Permitted Encumbrances Section 9.1(d)(ii8.1(d)(ii) Post-Closing Adjusted Defect Section 8.5(c) Properties Section 1.1 Purchase Price Section 1.3(d2.1 Records Section 1.1(f) Purchase Price Section 1.2 Regulatory Agencies Section 4.24 Remedies for Title Defects Section 9.1(b8.1(b) Request Date Section 2.3(c) Rules Section 13.1(d)(i8.3(b) SEC Scheduled Production Sales Contracts Section 8.19 Sellers Introduction 4.9 Sellers’ Representative Introduction Losses Section 11.3 Substantial Environmental Concern Section 8.2(e)(iii) Suspended Proceeds Section 7.11 Survival Date Section 11.2 Title Defect Section 9.1(d)(iii8.1(d)(iii) Title Defect Amount Section 9.1(c8.1(c) Title Defect Notice Section 9.1(b) Defined Term Reference Title Defect Property Section 9.1(b) Transition Services Agreement Section 10.1(h8.1(b)

Certain Additional Defined Terms. In addition to such the terms as are defined in the preamble of and the recitals to this Agreement and in Section 14.1above, the following capitalized terms are used in this Agreement as defined in the Articles or Sections of this Agreement set forth opposite such terms: Defined Term Terms Section Reference 2005 Action Section 6.4 Agreement Introduction Audited Financial Statements Section 4.9(a3.6 Class A Common Stock Recital A Class B Common Stock Recital A Closing Section 2.3(a) AAA Closing Certificate Section 13.1(d)(i2.2(a) Adjusted Purchase Price Section 1.2 Allocation Section 8.8(d) Basic Documents Section 4.14(b) Buyer Introduction Buyer’s Title Review Section 9.1(a) CERCLA Section 4.20 Chief Holdings Introduction Chief Midstream Holdings Introduction Closing Article II Closing Date Article II COBRA Section 8.7 2.3(a) Common Stock Recital A Commonly Controlled Entity Section 3.13(a) Company Introduction Company Contracts Employees Section 4.14(a6.5(a) Damages Company Intellectual Property Section 12.2 Deductible Amount 3.10(e) Competitive Activities Section 9.2 Defensible Title 6.3(a)(i) Declaration of Trust Section 9.1(d)(i) Disputes 4.1 Employees Section 13.1(a3.14 Environmental Permits Section 3.9(b) Environmental Liabilities Records Section 4.20 Escrow Agent Section 12.10 Escrow Agreement Section 12.10 Escrow Amount Section 12.10 Escrow Deposit Section 1.4(a) Escrow Term Section 12.10 Examination Period Section 9.1(a) Excluded Assets Section 8.15 Final Settlement Statement Section 1.3(d3.9(j) Financial Statements Section 4.9(a3.6 Holdback Amount Section 2.4(e) HSR Act Section 8.16 Indemnified Party Section 12.5 7.4(a) Indemnifying Party Section 12.5 Independent Expert 7.4(a) Latest Balance Sheet Section 13.1(c3.6 Lien Section 3.4 Losses Section 7.2(a) Interim Financial Statements Material Contracts Section 4.9(a3.12(a) Interests Recital A 49 Defined Term Reference Midstream Reorganization Multiemployer Plan Section 1.5 Midstream 2005 Financial Statements 3.13(b) Multiple Employer Plan Section 4.9(b3.13(b) Midstream Financial Statements Net Recovery Amount Section 4.9(b6.6 Parent Introduction Permits Section 3.8 Permitted Goods and Services Section 6.3(a)(i) Midstream Interim Financial Statements Personal Property Section 4.9(b3.11(b) NGA Plans Section 4.15 NGPA Section 4.15 Notice 3.13(a) Pre-Closing Tax Period Section 12.5 Permitted Encumbrances Section 9.1(d)(ii) Post-Closing Adjusted Purchase Price Section 1.3(d6.2(c) Purchase Price Section 1.2 Regulatory Agencies 2.2(a) Purchaser Introduction Purchaser Indemnitees Section 4.24 Remedies for Title Defects 7.3 Real Property Section 9.1(b3.11(a) Rules Recovery Costs Section 13.1(d)(i6.6 Remedial Actions Section 3.9(e) SEC Required Shareholders Section 8.19 Sellers 2.4(b) Related Persons Section 3.20 Schedule of Exceptions Introduction Sellersto Article III Shareholder List Section 3.2(a) Shareholders Introduction Shareholders’ Representative Introduction Title Defect Shares Recital A Unaudited Financial Statements Section 9.1(d)(iii3.6 Third-Party Claim Section 7.4(a) Title Defect Amount Top Ten Customer Section 9.1(c3.22(a) Title Defect Notice Transmitted Copies Section 9.1(b) Title Defect Property 8.11 Voting Company Debt Section 9.1(b) Transition Services Agreement Section 10.1(h)3.2

Certain Additional Defined Terms. In addition to such terms as are defined in the preamble of and the recitals to this Agreement and in Section 14.11.1, the following terms are used in this Agreement as defined in the Articles or Sections set forth opposite such terms: Defined Term Reference 2005 Acceptable Issuing Bank Section 9.15 Aggregate Per Member Cash Consideration Section 3.1(a) Aggregate Per Member Consideration Section 3.1(a) Agreement Preamble Allocation Statement Section 9.9(d) Arrow Pipeline Recitals Base Merger Consideration Section 3.2 Bidder Confidentiality Agreements Section 9.6(b) Buyer Preamble Buyer Financial Statements Section 4.9(a7.16 Buyer Financing Section 9.14(a) AAA Buyer Indemnified Parties Section 13.1(d)(i13.2(a) Adjusted Purchase Price Section 1.2 Allocation Section 8.8(d) Basic Buyer SEC Documents Section 4.14(b7.15(a) Buyer Introduction Buyer’s Title Review Indemnified Claim Section 9.1(a13.2(a) CERCLA Cap Section 4.20 Chief Holdings Introduction Chief Midstream Holdings Introduction 13.2(d) Closing Article II Section 2.2 Closing Date Article II COBRA Section 8.7 2.2 Closing Payment Section 12.1 Company Introduction Preamble Company Contracts Contract Section 4.14(a4.12(a) Company Counsel Section 15.11(a) Consents Section 4.7 Continuing Employees Section 9.8(a) Custody Agreement Section 9.18 Damages Section 12.2 Deductible 9.2 De Minimis Threshold Section 13.2(d) Debt Payoff Amount Section 9.2 Defensible Title 3.3(d) Deductible Section 9.1(d)(i13.2(d) Disputes Disguised Sale Section 13.1(a9.9(a) Environmental Liabilities DLLCA Recitals Effective Time Section 4.20 Escrow Agent Section 12.10 Escrow Agreement Section 12.10 Escrow Amount Section 12.10 Escrow Deposit Section 1.4(a) 2.3 Escrow Term Section 12.10 Examination Period 13.6(b) Estimated Closing Date Balance Sheet Section 9.1(a12.1 Estimated Closing Items Section 12.1 Estimated Merger Consideration Adjustment Amount Section 12.1 Estimated Net Working Capital Section 12.1 Estimated Reimbursable Capital Expenditures Section 12.1 Excess Payment Section 12.2(b) Excluded Assets Execution Date Preamble Final Closing Date Balance Sheet Section 8.15 12.2(a) Final Closing Items Section 12.2(a) Final Merger Consideration Adjustment Amount Section 12.2(a) Final Net Working Capital Section 12.2(a) Final Reimbursable Capital Expenditures Section 12.2(a) Final Settlement Statement Section 1.3(d12.2(c) Financial Statements Section 4.9(a4.23(a) HSR Act Fundamental Representations and Warranties Section 8.16 Indemnified Party 13.3(a)(ii) General Survival Period Section 12.5 Indemnifying Party 13.3(a)(i) Indemnitee Section 12.5 13.4 Independent Expert Section 13.1(c12.2(c) Intellectual Property Section 4.17(a) Interim Financial Statements Balance Sheet Section 4.9(a4.23(a) Interests Recital A 49 Defined Term Reference Midstream Reorganization Leases Section 1.5 Midstream 2005 Financial Statements 4.16(b) Member Representative Section 4.9(b15.13 Members’ Indemnified Claims Section 13.1(a) Midstream Financial Statements Merger Recitals Merger Sub Preamble MHA Recitals MHA Acquisition Recitals Multiemployer Plan Section 4.9(b4.24(d) Midstream Interim Financial Statements Offsite Release Liability Section 4.9(b4.14(b) NGA Party Preamble Policies Section 4.15 NGPA Section 4.15 Notice Period Section 12.5 Permitted Encumbrances Section 9.1(d)(ii4.21(a) Post-Closing Adjusted Purchase Price Date Straddle Period Section 1.3(d9.9(b)(iii) Purchase Price Pre-Closing Date Straddle Period Section 1.2 Regulatory Agencies 9.9(b)(iii) Pre-Closing Tax Returns Section 4.24 Remedies for Title Defects 9.9(b)(i) Required Buyer Filings Section 9.1(b9.14(b) Rules Seller Indemnified Parties Section 13.1(d)(i13.1(a) SEC Sponsor Letters of Credit Section 8.19 Sellers Introduction Sellers’ Representative Introduction Title Defect 9.15 Sponsors Section 9.1(d)(iii9.15 Straddle Period Tax Returns Section 9.9(b)(ii) Title Defect Amount Survival Period Section 9.1(c13.3(c) Title Defect Notice Surviving Company Section 9.1(b2.1 Tax Allocation Referee Section 9.9(d) Title Defect Property TSA Termination Date Section 9.1(b9.8(a) Transition Services Agreement Zenergy Employees Section 10.1(h4.24(i)

Certain Additional Defined Terms. In addition 15 Article II. Merger17 Section 2.1.The Merger 17 Section 2.2.Closing 17 Section 2.3.Effective Time of the Merger 17 Section 2.4.Effect of the Merger 18 Section 2.5.Further Actions 18 Section 2.6.Organizational Documents 18 Section 2.7.Officers 18 Article III. Conversion of Membership Interests18 Section 3.1.Merger Consideration. 18 Section 3.2.Payment of the Preliminary Merger Consideration 19 Section 3.3.Closing Obligations of the Company 19 Section 3.4.Closing Obligations of Buyer 20 Section 3.5.Allocation of Merger Consideration Among Members 21 Article IV. Representations and Warranties Relating to such terms as are defined in the preamble of Company and the recitals to this Company Subsidiaries21 Section 4.1.Organization and Standing 21 Section 4.2.Governing Documents 21 Section 0.0.Xxxxxxx Structure 22 Section 4.4.Power and Authority 22 Section 4.5.Valid and Binding Agreement 22 Section 4.6.Non-Contravention 23 Section 4.7.Approvals 23 Section 4.8.Subsidiaries; Investments 23 Section 4.9.Pending Proceedings; Orders 24 Section 4.10.Compliance with Laws; Permits 24 Section 4.11.Taxes 25 Section 4.12.Contracts 26 Section 4.13.Regulatory Matters 29 Section 4.14.Environmental Matters 29 Section 4.15.Pipeline and in Facilities 30 Section 14.1, the following terms are used in this Agreement as defined in the Articles or Sections set forth opposite such terms: Defined Term Reference 2005 Financial 4.16.Real Property. 31 Section 4.17.Intellectual Property 32 Section 4.18.Bankruptcy 33 Section 0.00.Xxxxxxx Commitments 33 Section 0.00.Xxxxxxxxx Advisors 33 Section 0.00.Xxxxxxxxx 33 Section 4.22.Sufficiency of Properties 34 Section 0.00.Xxxxxxxxx Statements 34 Section 4.9(a) AAA Section 13.1(d)(i) Adjusted Purchase Price Section 1.2 Allocation Section 8.8(d) Basic Documents Section 4.14(b) Buyer Introduction Buyer’s Title Review Section 9.1(a) CERCLA Section 4.20 Chief Holdings Introduction Chief Midstream Holdings Introduction Closing Article II Closing Date Article II COBRA Section 8.7 Company Introduction Company Contracts Section 4.14(a) Damages Section 12.2 Deductible Amount Section 9.2 Defensible Title Section 9.1(d)(i) Disputes Section 13.1(a) Environmental Liabilities Section 4.20 Escrow Agent Section 12.10 Escrow Agreement Section 12.10 Escrow Amount Section 12.10 Escrow Deposit Section 1.4(a) Escrow Term Section 12.10 Examination Period Section 9.1(a) Excluded Assets Section 8.15 Final Settlement Statement Section 1.3(d) Financial Statements Section 4.9(a) HSR Act Section 8.16 Indemnified Party Section 12.5 Indemnifying Party Section 12.5 Independent Expert Section 13.1(c) Interim Financial Statements Section 4.9(a) Interests Recital A 49 Defined Term Reference Midstream Reorganization Section 1.5 Midstream 2005 Financial Statements Section 4.9(b) Midstream Financial Statements Section 4.9(b) Midstream Interim Financial Statements Section 4.9(b) NGA Section 4.15 NGPA Section 4.15 Notice Period Section 12.5 Permitted Encumbrances Section 9.1(d)(ii) Post-Closing Adjusted Purchase Price Section 1.3(d) Purchase Price Section 1.2 Regulatory Agencies Section 4.24 Remedies for Title Defects Section 9.1(b) Rules Section 13.1(d)(i) SEC Section 8.19 Sellers Introduction Sellers’ Representative Introduction Title Defect Section 9.1(d)(iii) Title Defect Amount Section 9.1(c) Title Defect Notice Section 9.1(b) Title Defect Property Section 9.1(b) Transition Services Agreement Section 10.1(h)4.24.Employees and Employee Benefit Plans 34

Certain Additional Defined Terms. In addition to such terms as are defined in the preamble of and the recitals to this Agreement and in Section 14.118.1, the following terms are used in this Agreement as defined in the Articles or Sections set forth opposite such terms: 52 Term Defined Term Reference 2005 Financial Statements Section 4.9(a) AAA Section 13.1(d)(i) Adjusted Purchase Price Section 1.2 Allocation 2.2 Adjustment Amount Section 8.8(d3.5 AFE Section 4.13 Agreement Preamble Allocated Value Section 3.1(c)(i) Basic Documents Assets Section 4.14(b1.1 Assumed Obligations Section 11.4(a) Buyer Introduction Buyer’s Title Review Business Days Section 9.1(a2.3(a) CERCLA Business Employees Section 4.20 Chief Holdings Introduction Chief Midstream Holdings Introduction 11.12(a) Claim Notice Section 11.4(e)(i) Closing Article II Section 10.1 Closing Date Article II COBRA Section 8.7 Company Introduction Company Contracts 10.1 Code Section 4.14(a4.5 Continuing Employee Section 11.12(c) Damages Cure Period Section 12.2 3.6(b) Deductible Amount Section 9.2 3.4 Defects Escrow Section 3.6(a) Defects Escrow Agent Section 3.6(a) Defects Escrow Agreement Section 3.6(a) Defects Escrow Amount Section 3.6(a) Defensible Title Section 9.1(d)(i3.1(d)(i) Deferred Adjustment Claim Section 3.5 Deferred Matters Date Section 3.5 Deposit Section 2.1(c) Deposit Escrow Agreement Section 2.1(e) Disputes Section 13.1(a17.1(a) Documents Section 14.1 Effective Time Section 1.1 Entech Section 1.2 Environmental Claims Section 16.2 Environmental Defect Section 3.2(e)(i) Environmental Liabilities Defect Notice Section 4.20 3.2(c) Environmental Defect Value Section 3.2(e)(ii) Environmental Information Section 3.2(b) Escrow Agent Section 12.10 Escrow Agreement Section 12.10 Escrow Amount Section 12.10 Escrow Deposit Section 1.4(a2.1(c) Escrow Term Section 12.10 Examination Period Section 9.1(a3.1(a) Estimated Adjusted Purchase Price Section 2.3(a) Excluded Assets Section 8.15 Final Settlement Statement 1.1 Filings Section 1.3(d) Financial Statements Section 4.9(a) HSR Act Section 8.16 17.24 Indemnified Party Section 12.5 11.4(e)(i) Indemnifying Party Section 12.5 11.4(e)(i) Independent Expert Section 13.1(c17.1(a) Interim Financial Statements Section 4.9(a) Interests Recital A 49 Defined Term Reference Midstream Reorganization Section 1.5 Midstream 2005 Financial Statements Section 4.9(b) Midstream Financial Statements Section 4.9(b) Midstream Interim Financial Statements Section 4.9(b) NGA Section 4.15 NGPA Section 4.15 Notice Period Section 12.5 Permitted Encumbrances Section 9.1(d)(ii) Post-Closing Adjusted Purchase Price Section 1.3(d) Purchase Price Section 1.2 Regulatory Agencies Section 4.24 Remedies for Title Defects Section 9.1(b) Rules Section 13.1(d)(i) SEC Section 8.19 Sellers Introduction Sellers’ Representative Introduction Title Defect Section 9.1(d)(iii) Title Defect Amount Section 9.1(c) Title Defect Notice Section 9.1(b) Title Defect Property Section 9.1(b) Transition Services Agreement Section 10.1(h)6.1

Certain Additional Defined Terms. In addition to such terms as are defined in the preamble of and the recitals to this Agreement and in Section 14.11.1, the following terms are used in this Agreement as defined in the Articles or Sections set forth opposite such terms: Defined Term Reference 2005 Acceptable Issuing Bank Section 9.15 Aggregate Per Member Cash Consideration Section 3.1(a) Aggregate Per Member Consideration Section 3.1(a) Agreement Preamble Allocation Statement Section 9.9(d) Arrow Pipeline Recitals Base Merger Consideration Section 3.2 Bidder Confidentiality Agreements Section 9.6(b) Buyer Preamble Buyer Financial Statements Section 4.9(a7.16 Buyer Financing Section 9.14(a) AAA Buyer Indemnified Parties Section 13.1(d)(i13.2(a) Adjusted Purchase Price Section 1.2 Allocation Section 8.8(d) Basic Buyer SEC Documents Section 4.14(b7.15(a) Buyer Introduction Buyer’s Title Review Indemnified Claim Section 9.1(a13.2(a) CERCLA Cap Section 4.20 Chief Holdings Introduction Chief Midstream Holdings Introduction 13.2(d) Closing Article II Section 2.2 Closing Date Article II COBRA Section 8.7 2.2 Closing Payment Section 12.1 Company Introduction Preamble Company Contracts Contract Section 4.14(a4.12(a) Company Counsel Section 15.11(a) Consents Section 4.7 Continuing Employees Section 9.8(a) Custody Agreement Section 9.18 Damages Section 12.2 Deductible 9.2 De Minimis Threshold Section 13.2(d) Debt Payoff Amount Section 9.2 Defensible Title 3.3(d) Deductible Section 9.1(d)(i13.2(d) Disputes Disguised Sale Section 13.1(a9.9(a) Environmental Liabilities DLLCA Recitals Effective Time Section 4.20 Escrow Agent Section 12.10 Escrow Agreement Section 12.10 Escrow Amount Section 12.10 Escrow Deposit Section 1.4(a) 2.3 Escrow Term Section 12.10 Examination Period 13.6(b) Estimated Closing Date Balance Sheet Section 9.1(a12.1 Estimated Closing Items Section 12.1 Estimated Merger Consideration Adjustment Amount Section 12.1 Estimated Net Working Capital Section 12.1 Estimated Reimbursable Capital Expenditures Section 12.1 Excess Payment Section 12.2(b) Excluded Assets Execution Date Preamble Final Closing Date Balance Sheet Section 8.15 12.2(a) Final Closing Items Section 12.2(a) Final Merger Consideration Adjustment Amount Section 12.2(a) Final Net Working Capital Section 12.2(a) Final Reimbursable Capital Expenditures Section 12.2(a) Final Settlement Statement Section 1.3(d12.2(c) Financial Statements Section 4.9(a4.23(a) HSR Act Fundamental Representations and Warranties Section 8.16 Indemnified Party 13.3(a)(ii) General Survival Period Section 12.5 Indemnifying Party 13.3(a)(i) Indemnitee Section 12.5 13.4 Independent Expert Section 13.1(c12.2(c) Intellectual Property Section 4.17(a) Interim Financial Statements Balance Sheet Section 4.9(a4.23(a) Interests Recital A 49 Defined Term Reference Midstream Reorganization Leases Section 1.5 Midstream 2005 Financial Statements 4.16(b) Member Representative Section 4.9(b15.13 Members’ Indemnified Claims Section 13.1(a) Midstream Financial Statements Merger Recitals Merger Sub Preamble MHA Recitals MHA Acquisition Recitals Multiemployer Plan Section 4.9(b4.24(d) Midstream Interim Financial Statements Offsite Release Liability Section 4.9(b4.14(b) NGA Party Preamble Policies Section 4.15 NGPA Section 4.15 Notice Period Section 12.5 Permitted Encumbrances Section 9.1(d)(ii4.21(a) Post-Closing Adjusted Purchase Price Date Straddle Period Section 1.3(d9.9(b)(iii) Purchase Price Pre-Closing Date Straddle Period Section 1.2 Regulatory Agencies 9.9(b)(iii) Pre-Closing Tax Returns Section 4.24 Remedies for Title Defects 9.9(b)(i) Required Buyer Filings Section 9.1(b9.14(b) Rules Seller Indemnified Parties Section 13.1(d)(i13.1(a) SEC Sponsor Letters of Credit Section 8.19 Sellers Introduction Sellers’ Representative Introduction Title Defect 9.15 Sponsors Section 9.1(d)(iii9.15 Straddle Period Tax Returns Section 9.9(b)(ii) Title Defect Amount Survival Period Section 9.1(c13.3(c) Title Defect Notice Surviving Company Section 9.1(b2.1 Tax Allocation Referee Section 9.9(d) Title Defect Property TSA Termination Date Section 9.1(b) Transition Services Agreement Section 10.1(h9.8(a)