Document:

exv10w1

 

Exhibit 10.1

Execution Version

PURCHASE AND SALE AGREEMENT

BETWEEN

EQUITABLE PRODUCTION COMPANY

AS SELLER,

AND

PINE MOUNTAIN OIL AND GAS, INC.

AS PURCHASER,

Dated as of April 13, 2007

 

 

TABLE OF CONTENTS

	 	 	 	 	 
	 	 	Page	 
	ARTICLE 1 PURCHASE AND SALE
	 	 	1	 
	Section 1.1 Purchase and Sale
	 	 	1	 
	Section 1.2 Combined Assets
	 	 	1	 
	Section 1.3 Excluded Assets
	 	 	3	 
	Section 1.4 Certain Definitions
	 	 	3	 
	Section 1.5 Effective Time; Proration of Costs and Revenues.
	 	 	8	 
	Section 1.6 Back-In Interests
	 	 	9	 
	Section 1.7 Pre-Effective Time Interests and Assets
	 	 	9	 
	Section 1.8 Intentions of the Parties
	 	 	10	 
	 
	 	 	 	 
	ARTICLE 2 PURCHASE PRICE
	 	 	10	 
	Section 2.1 Purchase Price
	 	 	10	 
	Section 2.2 Adjustments to Purchase Price
	 	 	11	 
	Section 2.3 Effect of Purchase Price Adjustments
	 	 	12	 
	Section 2.4 Allocation of Purchase Price
	 	 	12	 
	 
	 	 	 	 
	ARTICLE 3 TITLE MATTERS
	 	 	12	 
	Section 3.1 Title
	 	 	12	 
	Section 3.2 Definition of Defensible Title
	 	 	13	 
	Section 3.3 Definition of Permitted Encumbrances
	 	 	14	 
	Section 3.4 Notice of Asserted Title Defects; Defect Adjustments
	 	 	15	 
	Section 3.5 Consents to Assignment and Preferential Rights to Purchase
	 	 	19	 
	Section 3.6 Casualty or Condemnation Loss
	 	 	20	 
	 
	 	 	 	 
	ARTICLE 4 REPRESENTATIONS AND WARRANTIES OF SELLER
	 	 	20	 
	Section 4.1 Disclaimers
	 	 	20	 
	Section 4.2 Seller.
	 	 	22	 
	Section 4.3 Liability for Brokers’ Fees
	 	 	23	 
	Section 4.4 Consents, Approvals or Waivers
	 	 	23	 
	Section 4.5 Litigation
	 	 	23	 
	Section 4.6 Taxes
	 	 	23	 
	Section 4.7 Environmental Laws
	 	 	24	 
	Section 4.8 Compliance with Laws
	 	 	24	 
	Section 4.9 Contracts
	 	 	24	 
	Section 4.10 Payments for Production
	 	 	24	 
	Section 4.11 Production Imbalances
	 	 	24	 
	Section 4.12 Permits, etc.
	 	 	24	 
	Section 4.13 Outstanding Capital Commitments
	 	 	25	 
	Section 4.14 Plugging and Abandonment
	 	 	25	 
	Section 4.15 Condition of Equipment, etc.
	 	 	25	 
	Section 4.16 Payments of Royalties and Expenses
	 	 	25	 

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	 	 	Page	 
	Section 4.17 Suspense
	 	 	26	 
	Section 4.18 Absence of Certain Events
	 	 	26	 
	Section 4.19 Information
	 	 	26	 
	 
	 	 	 	 
	ARTICLE 5 REPRESENTATIONS AND WARRANTIES OF PURCHASER
	 	 	26	 
	Section 5.1 Existence and Qualification
	 	 	26	 
	Section 5.2 Power
	 	 	26	 
	Section 5.3 Authorization and Enforceability
	 	 	26	 
	Section 5.4 No Conflicts
	 	 	26	 
	Section 5.5 Liability for Brokers’ Fees
	 	 	27	 
	Section 5.6 Consents, Approvals or Waivers
	 	 	27	 
	Section 5.7 Litigation
	 	 	27	 
	Section 5.8 Financing
	 	 	27	 
	Section 5.9 Qualification
	 	 	27	 
	Section 5.10 No Top Leases
	 	 	27	 
	Section 5.11 Independent Investigation
	 	 	27	 
	Section 5.12 Seller Information
	 	 	28	 
	 
	 	 	 	 
	ARTICLE 6 COVENANTS OF THE PARTIES
	 	 	28	 
	Section 6.1 Access
	 	 	28	 
	Section 6.2 Indemnity Regarding Access
	 	 	28	 
	Section 6.3 Pre-Closing Notifications
	 	 	28	 
	Section 6.4 Confidentiality; Public Announcements
	 	 	29	 
	Section 6.5 Governmental Reviews
	 	 	30	 
	Section 6.6 Tax Matters
	 	 	30	 
	Section 6.7 Further Assurances
	 	 	32	 
	Section 6.8 Assumption of Obligations
	 	 	32	 
	Section 6.9 Like-Kind Exchange
	 	 	32	 
	Section 6.10 Operation of Assets
	 	 	32	 
	Section 6.11 Financial Information
	 	 	33	 
	Section 6.12 No Merger of Interests
	 	 	33	 
	Section 6.13 Waiver of Condition for Pittston Litigation
	 	 	34	 
	 
	 	 	 	 
	ARTICLE 7 CONDITIONS TO CLOSING
	 	 	35	 
	Section 7.1 Conditions of Seller to Closing
	 	 	35	 
	Section 7.2 Conditions of Purchaser to Closing
	 	 	36	 
	 
	 	 	 	 
	ARTICLE 8 CLOSING
	 	 	37	 
	Section 8.1 Time and Place of Closing
	 	 	37	 
	Section 8.2 Closing Deliveries of Seller
	 	 	37	 
	Section 8.3 Closing Deliveries of Purchaser
	 	 	38	 
	Section 8.4 Closing Payment and Post-Closing Purchase Price Adjustments
	 	 	39	 
	 
	 	 	 	 
	ARTICLE 9 TERMINATION AND AMENDMENT
	 	 	40	 
	Section 9.1 Termination
	 	 	40	 
	Section 9.2 Effect of Termination
	 	 	41	 

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	 	 	Page	 
	ARTICLE 10 INDEMNIFICATIONS; LIMITATIONS
	 	 	41	 
	Section 10.1 Indemnification
	 	 	41	 
	Section 10.2 Indemnification Actions
	 	 	43	 
	Section 10.3 Limitation on Actions
	 	 	45	 
	 
	 	 	 	 
	ARTICLE 11 MISCELLANEOUS
	 	 	46	 
	Section 11.1 Receipts
	 	 	46	 
	Section 11.2 Property Costs and Gathering Charges
	 	 	47	 
	Section 11.3 Counterparts
	 	 	47	 
	Section 11.4 Notices
	 	 	47	 
	Section 11.5 [Intentionally Omitted]
	 	 	48	 
	Section 11.6 Expenses
	 	 	48	 
	Section 11.7 [Intentionally Omitted]
	 	 	48	 
	Section 11.8 Governing Law; Jurisdiction; Court Proceedings
	 	 	48	 
	Section 11.9 Records
	 	 	48	 
	Section 11.10 Captions
	 	 	48	 
	Section 11.11 Waivers
	 	 	48	 
	Section 11.12 Assignment
	 	 	49	 
	Section 11.13 Entire Agreement
	 	 	49	 
	Section 11.14 Amendment
	 	 	49	 
	Section 11.15 No Third Person Beneficiaries
	 	 	49	 
	Section 11.16 References
	 	 	49	 
	Section 11.17 Construction
	 	 	50	 
	Section 11.18 Limitation on Damages
	 	 	50	 
	Section 11.19 Attorney’s Fees
	 	 	50	 
	Section 11.20 EPC Lease
	 	 	50	 

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	EXHIBITS:
	 	 
	 
	 	 
	Exhibit A-1

	 	Leases
	Exhibit A-2

	 	Wells
	Exhibit A-3

	 	Contracts
	Exhibit A-4

	 	Water Disposal Wells; Other Excluded Assets
	Exhibit A-5

	 	Delinquent Liens for Current Taxes or Assessments
	Exhibit A-6

	 	Delinquent Liens Arising in the Ordinary Course of Business
	Exhibit A-7

	 	Calls on Production Under Existing Contracts
	Exhibit B

	 	Form of Conveyance
	Exhibit C

	 	Form of New Lease
	Exhibit D

	 	Form of Operating Agreement
	Exhibit E

	 	Form of Settlement Agreement
	Exhibit F

	 	Form of Termination Agreement
	Exhibit G

	 	Permitted Encumbrances
	Exhibit H

	 	Seller Guaranty
	Exhibit I

	 	Purchaser Guaranty
	Exhibit J

	 	Form of EPC Lease
	 
	 	 
	SCHEDULES:
	 	 
	 
	 	 
	Schedule 2.4

	 	Allocated Values
	Schedule 4.2(d)

	 	Conflicts (Seller)
	Schedule 4.4

	 	Consents, Approvals or Waivers (Seller)
	Schedule 4.5A

	 	Litigation
	Schedule 4.5B

	 	Litigation
	Schedule 4.6

	 	Taxes and Assessments
	Schedule 4.8

	 	Compliance with Laws
	Schedule 4.9

	 	Contracts
	Schedule 4.10

	 	Payments for Production
	Schedule 4.11

	 	Production Imbalances
	Schedule 4.12

	 	Governmental Permits
	Schedule 4.13

	 	Outstanding Capital Commitments
	Schedule 4.14

	 	Plugged or Abandoned Wells
	Schedule 4.15

	 	Condition of Equipment, etc.
	Schedule 4.17

	 	Suspense Funds
	Schedule 4.18

	 	Casualty Events
	Schedule 6.10

	 	Operation of Assets and Expenses Associated Therewith

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Index of Defined Terms

	 	 	 
	Defined Term	 	Section
	Adjusted Purchase Price

	 	Section 2.2
	Affiliate

	 	Section 1.4(a)
	Agreed Interest Rate

	 	Section 1.4(b)
	Agreement

	 	Preamble
	Allocated Value

	 	Section 2.4
	AMI

	 	Section 1.4(c)
	Asserted Title Defect

	 	Section 3.2
	Asserted Title Defect Amount

	 	Section 3.4(c)
	Assets

	 	Section 1.7
	Business Day

	 	Section 1.4(d)
	Chosen Court

	 	Section 11.8
	Claim

	 	Section 10.2(b)
	Claim Notice

	 	Section 10.2(b)
	Closing

	 	Section 8.1
	Closing Date

	 	Section 8.1
	Closing Payment

	 	Section 8.4(a)
	Code

	 	Section 2.4
	Combined Assets

	 	Section 1.2
	Company

	 	Section 1.4(e)
	Consents

	 	Section 4.4
	Contracts

	 	Section 1.2(b)(ii)
	Contribution Agreement

	 	Section 7.1(c)
	Conveyance

	 	Section 8.2(a)
	Conveyed Lease Interests

	 	Section 1.2(a)
	Damages

	 	Section 10.1(d)
	Defensible Title

	 	Section 3.2
	Earned

	 	Section 1.5(b)
	Effective Time

	 	Section 2.2(a)
	Encumbrance

	 	Section 3.2
	Environmental Laws

	 	Section 4.7
	EPC Lease

	 	Section 1.4(f)
	Equipment

	 	Section 1.2(b)(iv)
	Event

	 	Section 4.1(d)
	Exchange Act

	 	Section 1.4(f)
	Excluded Assets

	 	Section 1.3
	Execution Date

	 	Preamble
	Existing JOA

	 	Section 1.4(h)
	Exploration Agreement

	 	Section 1.4(i)
	Exploration Agreement PMOG Area

	 	Section 1.4(j)
	Future Well

	 	Section 1.4(k)
	Gas Retention Percentage

	 	Section 1.4(l)
	Gathering Agreement

	 	Section 1.4(m)

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	Defined Term	 	Section
	Gathering Assets

	 	Section 1.4(n)
	Gathering Charges

	 	Section 1.4(o)
	Governmental Authority

	 	Section 1.4(p)
	Governmental Permits

	 	Section 4.12
	Hydrocarbons

	 	Section 1.4(q)
	Incurred

	 	Section 1.5(b)
	Indemnified Person

	 	Section 10.2(a)
	Indemnifying Person

	 	Section 10.2(a)
	LACT

	 	Section 1.4(r)
	Laws

	 	Section 1.4(s)
	Leases

	 	Section 1.2(a)
	Letter of Intent

	 	Section 11.13
	Like-Kind Exchange

	 	Section 6.9
	Material Adverse Effect

	 	Section 4.1(d)
	New Lease

	 	Section 1.7
	Non-PM Assets

	 	Section 1.4(t)
	Operating Agreement

	 	Section 8.2(e)
	Original Lease

	 	Section 1.4(u)
	Party; Parties

	 	Preamble
	Party Lawsuit

	 	Section 7.1(e)
	Permitted Encumbrances

	 	Section 3.3
	Person

	 	Section 1.4(v)
	Pittston

	 	Section 6.13(a)
	Pittston Claims

	 	Section 6.13(a)
	Pittston Litigation

	 	Section 7.1(e)(ii)
	PM Assets

	 	Section 1.4(w)
	PM Undeveloped Lease Interests

	 	Section 1.4(x)
	PM Wells

	 	Section 1.4(y)
	Pre-Closing Taxable Period

	 	Section 6.6(c)
	Pre-Effective Time Interests

	 	Section 1.7
	Preferential Rights

	 	Section 4.4
	Production Taxes

	 	Section 1.4(z)
	Properties

	 	Section 1.2(b)(i)
	Property Costs

	 	Section 1.5(c)
	Proration Unit

	 	Section 1.4(aa)
	Purchaser Indemnified Persons

	 	Section 10.1
	Purchase Price

	 	Section 2.1
	Purchaser

	 	Preamble
	Purchaser Successors

	 	Section 1.2(a)
	Records

	 	Section 1.4(bb)
	Review Well

	 	Section 1.4(cc)
	Scheduled Transfer Requirements

	 	Section 4.4(a)
	SEC

	 	Section 1.4(dd)
	Securities Act

	 	Section 1.4(ee)
	Seller

	 	Preamble
	Seller Indemnified Persons

	 	Section 10.1

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	Defined Term	 	Section
	Seller’s knowledge

	 	Section 4.1(c)
	Statements of Revenues and Expenses

	 	Section 6.11
	Straddle Taxable Period

	 	Section 6.6(c)
	Tax

	 	Section 1.4(ff)
	Tax Return

	 	Section 1.4(gg)
	Termination Agreement

	 	Section 8.2(g)
	Termination Date

	 	Section 9.1
	Title Arbitrator

	 	Section 3.4(f)
	Title Claim Date

	 	Section 3.4(a)
	Title Defect

	 	Section 3.2
	Transaction Documents

	 	Section 11.13
	Transfer Taxes

	 	Section 1.4(hh)
	Undeveloped Lease Interests

	 	Section 1.4(ii)
	Well Location

	 	Section 1.4(jj)
	Wells

	 	Section 1.2(a)

-vii-

 

PURCHASE AND SALE AGREEMENT

     This Purchase and Sale Agreement (this “Agreement”), dated as of April ___, 2007, (the
“Execution Date”) is by and between Equitable Production Company, a corporation organized under the
Laws of the Commonwealth of Pennsylvania (“Seller”), and Pine Mountain Oil and Gas, Inc., a
corporation organized under the Laws of the Commonwealth of Virginia (“Purchaser”). Seller and
Purchaser are sometimes referred to herein, collectively, as the “Parties” and, individually, as a
“Party.”

RECITALS:

     WHEREAS, Seller is the owner of certain interests in oil and gas properties that are defined
and described herein; and

     WHEREAS, Seller desires to sell and Purchaser desires to purchase a portion of Seller’s right,
title and interest in and to such properties on the terms and conditions hereinafter set forth.

     NOW, THEREFORE, in consideration of the premises and of the mutual promises, representations,
warranties, covenants, conditions and agreements contained herein, and for other valuable
consideration, the receipt and sufficiency of which is hereby acknowledged, the Parties agree as
follows:

ARTICLE 1

PURCHASE AND SALE

     Section 1.1 Purchase and Sale . On the terms and conditions contained in this Agreement, Seller agrees to sell to Purchaser and
Purchaser agrees to purchase and accept from Seller the Assets. Seller further agrees to transfer
to Purchaser and Purchaser agrees to accept from Seller the Pre-Effective Time Interests as
contemplated by Section 1.7 hereof.

     Section 1.2 Combined Assets. “Combined Assets” means the following:

     (a) an undivided one-half (1/2) of all of Seller’s interest in and to those leases
identified on Exhibit A-1 attached hereto (including without limitation, in accordance with
Section 11.20, Seller’s interest as lessee under the EPC Lease, but for the avoidance of
doubt, excluding its interest as lessor thereunder) (such undivided one-half (1/2) interest in
such leases, the “Leases”), provided that, with respect to each of the wellbores of the
wells identified on Exhibit A-2 attached hereto (collectively, the “Wells”) and the
Proration Unit currently existing or to be formed therefor, such interest shall be reduced
or increased to the extent necessary to cause: (i) effective as of the Effective Time: (A)
Purchaser and all Persons holding any working interest in such Well and the Proration Unit
currently existing or that was formed previously held by Purchaser or any of its
Affiliates (all such Persons, “Purchaser Successors”), to collectively hold, the
interest in the wellbore of such Well specified under the column titled “Purchaser Effective
Time Interest” on Exhibit A-2 and the same interest in the Proration Unit currently existing
or

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to be formed for such Well; and (B) Seller to hold the interest in the wellbore of such
Well specified under the column titled “Seller Effective Time Interest” on Exhibit A-2 and
the same interest in the Proration Unit currently existing or to be formed for such Well;
and (ii) effective as of the Closing: (A) Purchaser and all Purchaser Successors to
collectively hold the interest in the wellbore of such Well specified under the column
titled “Purchaser Closing Interest” on Exhibit A-2 and the same interest in the Proration
Unit currently existing or to be formed for such Well; and (B) Seller to hold the interest
in the wellbore of such Well specified under the column titled “Seller Closing Interest” on
Exhibit A-2 and the same interest in the Proration Unit currently existing or to be formed
for such Well (the interests to be transferred to Purchaser described in this Section
1.2(a), the “Conveyed Lease Interests”);

     (b) that portion of Seller’s right, title and interest corresponding to the Conveyed
Lease Interests in and to the following:

     (i) all pooled, communitized or unitized acreage, including acreage in units
formed or prescribed by regulatory order, associated with the Leases or Wells (that
portion of Seller’s right, title and interest in such acreage corresponding to the
Conveyed Lease Interests, together with the Conveyed Lease Interests, the
“Properties”), and all tenements, hereditaments and appurtenances associated
therewith;

     (ii) all contracts listed on Exhibit A-3 (that portion of Seller’s right, title
and interest in such contracts corresponding to the Properties, the “Contracts”);

     (iii) all easements, licenses, servitudes, rights-of-way, surface leases and
other surface rights appurtenant to, and used or held for use primarily in
connection with, the Properties or other Combined Assets, but excluding any of the
foregoing to the extent that (1) transfer is restricted by third-party agreement or
applicable Law, (2) Seller is unable to obtain, using commercially reasonable
efforts, a waiver of, or otherwise satisfy, such transfer restriction (provided that
Seller shall not be required to provide consideration or undertake obligations to or
for the benefit of the holders of such rights in order to obtain any necessary
consent or waiver), and (3) the failure to obtain such waiver or satisfy such
transfer restriction would cause a termination of such instrument or a material
impairment of the rights thereunder; and

     (iv) all equipment, machinery, fixtures, well lines, pipelines and other
tangible personal property and improvements located on the Properties or used or
held for use primarily in connection with the ownership or operation of the
Properties or other Combined Assets, but excluding any such items at and downstream
of any wellsite metering equipment associated with any Well
(including such wellsite metering equipment and any gathering lines, pipelines,
well lines and compressors downstream of such wellsite metering equipment), and any
such items included in the Excluded Assets (that portion of Seller’s right,

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title and interest in such equipment, machinery, fixtures and other tangible personal
property and improvements corresponding to the Properties, and subject to such
exclusions, the “Equipment”).

     Section 1.3 Excluded Assets. Notwithstanding anything to the contrary contained herein, the Combined Assets shall not
include, and the following are excepted, reserved and excluded from the transactions contemplated
hereby (collectively, the “Excluded Assets”):

     (a) all water disposal wells, and any transfer facility, loadout facility or other
facility associated with such water disposal wells, located on the Leases or used in
connection with the disposal of produced water derived from or otherwise attributable to any
of the Wells, including those water disposal wells and associated facilities described on
Exhibit A-4;

     (b) (i) computers and peripheral equipment related to such computers; (ii)
communication and telecommunication equipment including but not limited to radios, towers,
and networking equipment; (iii) custom applications and databases; (iv) measurement and data
collection devices; and (v) software and associated licenses, including but not limited to
any software relating to the SCADA System, Enertia, Altra, Flow-Cal, Talon, Aries,
Production Access, Pre-drill Manager, Geographix, Synergy, and CygNet;

     (c) all rights and all obligations of Seller with respect to any refund or payment of
Taxes or other costs or expenses borne by Seller or Seller’s predecessors in interest and
title attributable to the Assets and the period prior to the Effective Time;

     (d) all rights and all obligations of Seller with respect to the claims and causes of
action relating to the Assets that accrued or arose prior to the Effective Time (other than
claims or causes of action for proceeds to which Purchaser is entitled under Section
1.5(b));

     (e) Seller’s area-wide bonds, permits and licenses (including all Federal
Communications Commission licenses) or other permits, licenses or authorizations used in the
conduct of Seller’s business generally;

     (f) the Gathering Assets;

     (g) all fee mineral interests in Hydrocarbons; and

     (h) those other assets and interests identified on Exhibit A-4.

     Section 1.4 Certain Definitions. As used herein:

     (a) “Affiliate” means, with respect to any Person, a Person that directly or indirectly
controls, is controlled by or is under common control with such Person, with control in such
context meaning (i) the power to direct the vote of more than fifty percent (50%) of the
voting shares or other securities of such Person through ownership, pursuant

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to a written
agreement, or otherwise or (ii) the power to direct the management and policies of a Person
through ownership of voting shares or other securities, pursuant to a written agreement, or
otherwise. For the purposes of this Agreement, the Company shall not be considered an
Affiliate of either Party or such Party’s Affiliates.

     (b) “Agreed Interest Rate” means the lesser of (i) five percent (5%) per annum and (ii)
the maximum rate allowed by applicable Laws.

     (c) “AMI” has the meaning set forth in the Operating Agreement.

     (d) “Business Day” means any day other than a Saturday, a Sunday, or a day on which
banks are closed for business in Pittsburgh, Pennsylvania or Fort Worth, Texas.

     (e) “Company” means Nora Gathering, LLC, a limited liability company organized under
the Laws of the State of Delaware.

     (f) “EPC Lease” means a Hydrocarbons lease in substantially the form attached hereto as
Exhibit “J”.

     (g) “Exchange Act” means the Securities Exchange Act of 1934, as amended.

     (h) “Existing JOA” means the Coalbed Methane Gas Operating Agreement dated as of August
1, 1994 and the Conventional Gas (Non-Coalbed Gas) Operating Agreement dated as of August 1,
1994.

     (i) “Exploration Agreement” means the Coalbed Gas Exploration and Development Agreement
dated as of April 5, 1988, together with and as amended, supplemented and modified from time
to time by various amendments and supplemental agreements thereto, including (i) the
Amendment to Coalbed Gas Exploration and Development Agreement dated as of December 12,
1990, (ii) the Second Amendment to Coalbed Gas Exploration and Development Agreement dated
as of August 26, 1994, (iii) the Third Amendment to Coalbed Gas Exploration and Development
Agreement dated as of June 10, 1996, (iv) the Fourth Amendment to Coalbed Gas Exploration
and Development Agreement dated as of July 10, 1997, and (v) the Fifth Amendment to Coalbed
Gas Exploration and Development Agreement dated as of December 31, 1998.

     (j) “Exploration Agreement PMOG Area” means the areas covered by the Exploration
Agreement under which PMOG or any of its Affiliates holds, or leases from third Persons not
affiliated with Seller, the mineral interest.

     (k) “Future Well” shall mean a well to be drilled in the future upon a Well Location,
which (for the purposes of determining Defensible Title thereto and any Title Defects
associated therewith pursuant to this Agreement) shall be treated as if such well had been
drilled and completed and was in existence as of the date of this Agreement.

     (l) “Gas Retention Percentage” has the meaning set forth in the Gathering Agreement.

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     (m) “Gathering Agreement” has the meaning set forth in the Contribution Agreement.

     (n) “Gathering Assets” has the meaning set forth in that certain Contribution Agreement
of even date herewith between Seller, Equitable Gathering Equity, LLC, Purchaser and the
Company.

     (o) “Gathering Charges” means the Gathering Rate (as defined in the Gathering
Agreement) and all other charges set forth in the Gathering Agreement, except the Gas
Retention Percentage, chargeable in connection with Hydrocarbons produced from the Assets
for the gathering services provided by Seller or its Affiliates through the Gathering
Assets, which charges shall be determined as if the Gathering Agreement was in place
effective as of the Effective Time.

     (p) “Governmental Authority” means any government and/or any political subdivision
thereof, including departments, courts, commissions, boards, bureaus, ministries, agencies
or other instrumentalities.

     (q) “Hydrocarbons” means all oil, gas, coalbed methane gas and other associated
hydrocarbons.

     (r) “LACT” means Lease Automatic Custody Transfer.

     (s) “Laws” means all laws, statutes, rules, regulations, ordinances, orders,
requirements and codes of Governmental Authorities.

     (t) “Non-PM Assets” means all Assets other than the PM Assets.

     (u) “Original Lease” means that certain Agreement, dated as of July 25, 1972, between
The Pittston Company (the predecessor in interest to Purchaser), as lessor, and Philadelphia
Oil Company (the predecessor in interest to Seller), as lessee (together with and as
amended, supplemented and modified from time to time by various amendments and supplemental
agreements thereto, including (i) the Supplemental Agreement, dated as of January 19, 1976,
between The Pittston Company and Philadelphia Oil Company, (ii) the Supplemental Agreement
II, dated as of August 24, 1978, between The Pittston Company and Philadelphia Oil Company,
(iii) the Supplemental Agreement III, dated as of January 1, 1986, between The Pittston
Company and Philadelphia Oil Company, (iv) the First Amendment to Supplemental Agreement
III, dated as of August 26, 1994, and effective August 1, 1994 between Purchaser and
Equitable Resources Exploration, Inc.,
(v) the Supplemental Agreement IV, dated as of February 3, 1997, between Purchaser and
Equitable Resources Energy Company — Eastern Region, (vi) the Additional Acreage Agreement,
dated as of January 1, 1986, between The Pittston Company and Equitable Resources Energy
Company, (vii) the Amendment to the Additional Acreage Agreement, dated as of January 1,
1987, between Purchaser and Equitable Resources Energy Company, (viii) the Second Amendment
to the Additional Acreage Agreement, dated as of April 11, 1988, and effective January 1,
1988 between Purchaser and Equitable Resources Exploration, Inc., (ix) the Third Amendment
to the Additional Acreage

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Agreement, dated as of February 26, 1993, and effective January 1,
1993 between Purchaser and Equitable Resources Exploration, Inc., (x) the Fourth Amendment
to the Additional Acreage Agreement, dated as of August 26, 1994, between Purchaser and
Equitable Resources Exploration, Inc., (xi) the Fifth Amendment to the Additional Acreage
Agreement, dated as of March 21, 1995, and effective January 1, 1995 between Purchaser and
Equitable Resources Exploration, Inc., (xii) the Sixth Amendment to the Additional Acreage
Agreement, dated as of June 10, 1996, and effective December 31, 1995 between Purchaser and
Equitable Resources Exploration, Inc., (xiii) the Seventh Amendment to the Additional
Acreage Agreement, effective as of December 31, 1996, between Purchaser and Equitable
Resources Energy Company, (xiv) the Eighth Amendment to the Additional Acreage Agreement,
dated as of December 29, 1997, and effective December 31, 1997 between Purchaser and
Equitable Resources Energy Company, (xv) the Ninth Amendment to the Additional Acreage
Agreement, dated as of November 25, 1999, and effective December 31, 1999 between Purchaser
and Seller, and (xvi) the Tenth Amendment to the Additional Acreage Agreement, dated as of
May 3, 2005, and effective as of January 1, 2000, between Purchaser and Seller.

     (v) “Person” means any individual, corporation, partnership, limited liability company,
trust, estate, Governmental Authority or any other entity.

     (w) “PM Assets” means all PM Undeveloped Lease Interests and all PM Wells.

     (x) “PM Undeveloped Lease Interests” means all Undeveloped Lease Interests in which
Purchaser or its Affiliates possessed or has the right to possess any part of the working
interest or lessor interest as of the Execution Date. For avoidance of doubt, Undeveloped
Lease Interests under the Original Lease and any portion of the Exploration Agreement PMOG
Area that constitutes an Undeveloped Lease Interest shall be deemed to be PM Undeveloped
Lease Interests for all purposes of this Agreement.

     (y) “PM Wells” means all Wells in which Purchaser or its Affiliates possessed or has
the right to possess any part of the working interest or lessor interest as of the Execution
Date. For the avoidance of doubt, the Wells listed under “PM Wells” on Exhibit A-2 shall be
deemed PM Wells for all purposes of this Agreement.

     (z) “Production Taxes” means ad valorem, property, severance, production and similar
Taxes based upon or measured by the ownership or operation of the Assets or the production
of Hydrocarbons therefrom, but excluding any other Taxes

     (aa) “Proration Unit” means, for any Well (i) the acreage unit size as shown in the
pooling or unit designation for such Well filed in the real property records in the county
in which such Well is located, or if no such designation is filed, as permitted with the
state regulatory agency (or as shown on the issued well permit) for such Well; provided that
if no such acreage size is provided pursuant to any of the foregoing, then “Proration Unit”
means, for any Well, the minimum acreage unit size permitted by applicable Law for such Well
and (ii) the producing interval or targeted producing interval for such Well.

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     (bb) “Records” means all lease files, land files, well files, gas and oil sales
contract files, gas processing files, division order files, abstracts, title opinions, land
surveys, geologic and geophysical data (excluding interpretations thereof) and files and all
other books, records, data, files, maps and accounting records to the extent relating
primarily to the Properties or other Combined Assets, excluding however, (A) any record to
the extent that: (1) disclosure of such record is restricted by third-party agreement or
applicable Law, (2) Seller is unable to obtain, using commercially reasonable efforts, a
waiver of, or otherwise satisfy, such disclosure restriction (provided that Seller shall not
be required to provide consideration or undertake obligations to or for the benefit of the
holders of such rights in order to obtain any necessary consent or waiver) and (3) the
failure to obtain such waiver or satisfy such disclosure restriction would cause a
termination of such instrument or a material impairment of the rights thereunder; (B)
computer software; (C) all legal records and legal files of Seller (other than (x) title
opinions and (y) Contracts) and all other work product of and attorney-client communications
with any of Seller’s legal counsel; (D) records relating to the sale of the Assets,
including bids received from and records of negotiations with third Persons; (E) any other
records to the extent constituting Excluded Assets; and (F) contracts and agreements of no
further force and effect as of the Effective Time.

     (cc) “Review Well” shall mean a Well or a Future Well, as the context requires.

     (dd) “SEC” means the U.S. Securities and Exchange Commission.

     (ee) “Securities Act” means the Securities Act of 1933, as amended, and any successor
statute thereto and the rules and regulations of the SEC promulgated thereunder.

     (ff) “Tax” means all taxes, including income tax, surtax, remittance tax, presumptive
tax, net worth tax, production tax, pipeline transportation tax, value added tax,
withholding tax, gross receipts tax, windfall profits tax, profits tax, severance tax,
personal property tax, real property tax, sales tax, service tax, transfer tax, use tax,
excise tax, premium tax, customs duties, stamp tax, motor vehicle tax, entertainment tax,
insurance tax, capital stock tax, franchise tax, occupation tax, payroll tax, employment
tax, social security, unemployment tax, disability tax, alternative or add-on minimum tax,
estimated tax, and any other assessments, duties, fees, or levies imposed by a
Governmental Authority, together with any interest, fine or penalty thereon, or
addition thereto.

     (gg) “Tax Return” means any return, declaration, report, claim for refund, or
information return or statement relating to Taxes, including any schedule or attachment
thereto, and including any amendment thereof, required to be filed with any Governmental
Authority.

     (hh) “Transfer Taxes” means all transfer, sales, use, documentary, stamp duty,
conveyance and other similar Taxes, duties, fees or charges.

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     (ii) “Undeveloped Lease Interests” means any Lease, acreage, area (including the
Exploration Agreement PMOG Area) or portion thereof included in the Properties that is not
included in a Proration Unit corresponding to a Well.

     (jj) “Well Location” shall mean each lease/tract location identified on Exhibit A-2.

     Section 1.5 Effective Time; Proration of Costs and Revenues.

     (a) Title and interest in and to the Combined Assets shall be transferred from Seller
to Purchaser at the Closing, but certain financial benefits and burdens in respect of the
Assets shall be transferred effective as of the Effective Time, as described below.
Notwithstanding anything to the contrary herein, financial benefits and burdens in respect
of the Pre-Effective Time Interests prior to the Effective Time shall not be modified or
changed from the manner in which such benefits and burdens were treated in the period prior
to the Effective Time by the provisions of this Section 1.5.

     (b) Purchaser shall be entitled to all production of Hydrocarbons from or attributable
to the Assets on and after the Effective Time (and all products and proceeds attributable
thereto), and to all other income, proceeds, receipts and credits earned with respect to the
Assets on and after the Effective Time, and shall be responsible for (and entitled to any
refunds with respect to) all Property Costs incurred on and after the Effective Time
(provided that Purchaser’s entitlement to production, income, proceeds, receipts, and
credits earned with respect to, and responsibility for and entitlement to refunds with
respect to Property Costs relating to, certain of the Assets shall be adjusted as of Closing
in the manner described in Section 2.2). Seller shall be entitled to all production of
Hydrocarbons from or attributable to the Assets prior to the Effective Time (and all
products and proceeds attributable thereto), and to all other income, proceeds, receipts and
credits earned with respect to the Assets prior to the Effective Time, and shall be
responsible for (and entitled to any refunds with respect to) all Property Costs incurred
prior to the Effective Time (provided that Seller’s entitlement to production, income,
proceeds, receipts, and credits earned with respect to, and responsibility for and
entitlement to refunds with respect to Property Costs relating to, certain of the Assets
shall be adjusted as of Closing in the manner described in Section 2.2). “Earned” and
“incurred”, as used in this Agreement, shall be interpreted in accordance with United
States generally accepted accounting principles (as published by the Financial
Accounting Standards Board) and Council of Petroleum Accountants Societies (COPAS)
standards.

     (c) “Property Costs” means all operating expenses (including costs of insurance and
Production Taxes), capital expenditures incurred in the ownership and operation of the
Assets in the ordinary course of business, and overhead costs charged to the Assets under
the applicable operating agreement or if none, charged to the Assets on the same basis as
Seller has historically charged under the Existing JOA. “Property Costs” as used herein
shall not include the Gathering Charges.

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     (d) For purposes of allocating production (and accounts receivable with respect
thereto), under this Section 1.5, (i) liquid Hydrocarbons shall be deemed to be “from or
attributable to” the Assets when they pass through the pipeline flange connecting into the
storage facilities located on the Leases or, if there are no such storage facilities, when
they pass through the LACT meters or similar meters at the point of entry into the pipelines
through which they are transported from the Leases, and (ii) gaseous Hydrocarbons shall be
deemed to be “from or attributable to” the Assets when they pass through the delivery point
sales meters or similar meters at the point of entry into the pipelines through which they
are transported from the Leases. Seller shall utilize reasonable interpolative procedures
to arrive at an allocation of production when exact meter readings are not available.
Production Taxes, surface use fees, insurance premiums and other Property Costs that are
paid periodically shall be prorated based on the number of days in the applicable period
falling before, or at and after, the Effective Time, except that Production Taxes measured
by units of production shall be prorated based on the amount of Hydrocarbons actually
produced, purchased or sold, as applicable, before, or at and after, the Effective Time. In
each case, Purchaser shall be responsible for the portion allocated to the period on and
after the Effective Time and Seller shall be responsible for the portion allocated to the
period before the Effective Time.

     Section 1.6 Back-In Interests. Purchaser acknowledges and agrees that any and all existing back-in rights of the Purchaser or
its Affiliates to an additional or increased working interest in the Wells listed in Exhibit A-2 to
which Purchaser was entitled pursuant to the Existing JOA shall be extinguished in full, and any
liabilities or rights associated with such back-in rights shall cease to exist and shall no longer
be enforceable.

     Section 1.7 Pre-Effective Time Interests and Assets. Immediately prior to the Closing, Purchaser and Seller are the owners of certain working
interests relating to lands subject to the Original Lease and the Exploration Agreement. As part
of this Agreement and the transactions contemplated hereby (as well as other transactions between
the Parties and their Affiliates), the Parties desire to enter into a new lease agreement in
substantially the form attached hereto as Exhibit C (the “New Lease”), effective as of the Closing
Date, with Purchaser as the lessor and Seller as the lessee, and to terminate the Original Lease,
the Exploration Agreement and certain related agreements, effective as of the Closing Date. In
addition to the working interests in the Leases and Review Wells and the related assets that
Purchaser is purchasing from Seller under this Agreement (as such working interests are more
particularly described in the column titled “Conveyed Working Interest” on Exhibit A-2 and the
corresponding undivided interests in the Combined Assets associated therewith, the “Assets”). For
purposes of clarification, the Parties acknowledge that each Party may currently own some of the
interests that will be conveyed or cross conveyed under the Conveyance and that the Conveyance is
intended to stipulate and clarify as of the Closing the interests that each of the Parties will own
as of the Closing. In order to reflect Purchaser’s pre-Effective Time working interests in the
Wells drilled under the Original Lease and/or the Exploration Agreement, Seller, as the lessee
under the New Lease, will enter into such conveyances (including the Conveyance) with Purchaser to
confirm the pre-Effective Time working interests of Purchaser in such Wells and related assets that
will be subject to the New Lease (as such pre-Effective Time working interests are more
particularly described in the column titled “Purchaser Pre-Effective Time Working Interest” on
Exhibit A-2 and the corresponding undivided interests included in the Combined Assets associated
therewith, the “Pre-Effective Time Interests”). The Parties acknowledge that the Assets and the
Pre-Effective Time Interests together constitute the Combined Assets and the term “Assets” as
defined in this Agreement shall be the Combined Assets excluding the Pre-Effective Time

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Interests,
and upon Closing, Purchaser and all Purchaser Successors shall collectively hold the interest in
each Review Well identified on Exhibit A-2 as the “Purchaser Closing Interest” for such Review Well
and the same interest in the Proration Unit for such Review Well, and Seller shall hold the
interest in each Review Well identified on Exhibit A-2 as the “Seller Closing Interest” for such
Review Well and the same interest in the Proration Unit for such Review Well. Further, the parties
acknowledge that certain existing wells drilled by PMOG or its predecessors upon the lands covered
by the Original Lease were excluded under the Original Lease and are being excluded under the New
Lease (as more particularly described therein), and such excluded wells shall not be part of the
Combined Assets, Assets or Pre-Effective Time Interests.

     Section 1.8 Intentions of the Parties. The Parties acknowledge that it is their intent that (a) Seller transfer to Purchaser and
Purchaser accept as of the Effective Time an undivided one-half (1/2) of Seller’s interest existing
as of the Closing Date in all leases (including without limitation Seller’s interest as lessee
under the EPC Lease, but for the avoidance of doubt, excluding its interest as lessor thereunder)
included in Buchanan, Russell and Dickenson Counties, Virginia (excluding any interests in the
lands and properties excluded from the AMI) and (b) pursuant to the Conveyance, Purchaser shall
cross convey to Seller such interest in such leases (but excluding its interest as lessor under the
Original Lease or the New Lease), such that the respective interests of the Parties in such leases
as lessees thereunder shall be equal as of the Effective Time, whether or not such leases are
included in or accurately described on Exhibit A-1. The Parties further acknowledge and agree that
it is their intent that, notwithstanding anything herein to the contrary, to the extent that there
are any Wells in which both Seller and Purchaser currently have a working interest that exist upon
any Leases or within the AMI and that are not described on Exhibit A-2, the respective interests of
the Parties in such Wells shall be the same interests as the Parties have in such Wells as of the
date hereof; provided, however, if any such Well has been drilled by Seller upon the
Leases or within the AMI on or after the Effective Time, then the Parties agree that their
respective interests in such Wells and the Proration Units therefor as of the Effective Time shall
be equal.

ARTICLE 2

PURCHASE PRICE

     Section 2.1 Purchase Price. The purchase price for the Assets (the “Purchase Price”) shall be Two Hundred and Sixty-Two
Million Dollars (US$262,000,000), adjusted as provided in Section 2.2.

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     Section 2.2 Adjustments to Purchase Price. The Purchase Price shall be adjusted as follows:

     (a) Decreased by the aggregate amount of the following proceeds received by Seller
attributable to the Assets on and after 12:01 a.m. local time where the Assets are located
on June 1, 2006 (the “Effective Time”):

     (i) proceeds from the sale of Hydrocarbons produced from or attributable to the
Assets (less any royalties, overriding royalties net profits interests and other
similar burdens payable out of the production of Hydrocarbons from the Assets or the
proceeds thereof which are not included in “Property Costs”); and

     (ii) any other proceeds received by Seller attributable to the Assets;

     (b) Decreased in accordance with Section 3.4;

     (c) Decreased in accordance with Section 3.5;

     (d) Increased by the amount of all Property Costs attributable to the Assets on and
after the Effective Time which are incurred and paid by Seller excluding, however, any
amounts deducted pursuant to Section 2.2(a)(i) above;

     (e) [Intentionally omitted].

     (f) Increased by the amount of the Gathering Charges attributable to the Assets on and
after the Effective Time;

     (g) Decreased by Six Hundred Thousand Dollars (US$600,000) to represent an adjustment
(i) to the gathering rate paid by Purchaser in connection with gathering services on the
Gathering Assets provided by Seller and its Affiliates prior to the Effective Time, (ii) for
certain pre-Effective Time capital expenditures and (iii) for the Parties’ agreement
regarding resolution of the Pittston Litigation; and

     (h) Decreased by an amount equal to the difference between the (i) aggregate amount
paid by Purchaser for gathering services on the Gathering Assets provided by
Seller and its Affiliates for the period from (and including) the Effective Time until
the Closing with respect to the Pre-Effective Time Interests, and (ii) the aggregate amount
that would have been paid by Purchaser for gathering services on the Gathering Assets
provided by Seller and its Affiliates for the period from (and including) the Effective Time
until the Closing with respect to the Pre-Effective Time Interests if Purchaser would have
been charged the Gathering Charges for such services.

     The Purchase Price, adjusted as set forth in this Section 2.2, shall be the “Adjusted Purchase
Price.”

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     Section 2.3 Effect of Purchase Price Adjustments. The adjustment described in Section 2.2(a) shall serve to satisfy, up to the amount of the
adjustment, Purchaser’s entitlement under Section 1.5 to Hydrocarbon production from or
attributable to the Assets between the Effective Time and the Closing and to other income,
proceeds, receipts and credits earned with respect to the Assets between the Effective Time and the
Closing, and Purchaser shall not have any separate rights to receive any production or income,
proceeds, receipts and credits with respect to which an adjustment has been made. Similarly, the
adjustment described in Section 2.2(d) shall serve to satisfy, up to the amount of the adjustment,
Purchaser’s obligation under Section 1.5 to pay Property Costs attributable to the ownership and
operation of the Assets which are incurred between the Effective Time and the Closing, and
Purchaser shall not be separately obligated to pay for any Property Costs with respect to which an
adjustment has been made.

     Section 2.4 Allocation of Purchase Price. Schedule 2.4 sets forth the agreed allocation of the unadjusted Purchase Price among the Assets,
which has been made in accordance with Section 1060 of the Internal Revenue Code of 1986, as
amended (the “Code”), and the Treasury regulations thereunder. The “Allocated Value” for any Asset
shall equal the portion of the unadjusted Purchase Price allocated to such Asset on Schedule 2.4,
increased or decreased as described in this Section 2.4. Any adjustments to the Purchase Price
other than the adjustments provided for in Section 2.2(b) and Section 2.2(c) shall be applied on a
pro rata basis to the amounts set forth on Schedule 2.4 for all Assets. After all such adjustments
are made, any adjustments to the Purchase Price pursuant to Section 2.2(b) and Section 2.2(c) shall
be applied to the amounts set forth in Schedule 2.4 for the particular affected Assets. Seller and
Purchaser have accepted such Allocated Values for purposes of this Agreement and the transactions
contemplated hereby, however, neither Seller nor Purchaser make any representation or warranty as
to the accuracy of such Allocated Values. Seller and Purchaser agree (a) that the Allocated Values
shall be used by Seller and Purchaser as the basis for reporting asset values and other items for
purposes of all applicable Tax returns, and (b) that neither they nor their Affiliates will take
positions inconsistent with the Allocated Values in notices to Governmental Authorities, in audit
or other proceedings with respect to Taxes, in notices to preferential purchaser right holders, or
in other documents or notices relating to the transactions contemplated by this Agreement.

ARTICLE 3

TITLE MATTERS

     Section 3.1 Title.

     (a) The Conveyance shall contain a special warranty of title against every Person
lawfully claiming or to claim the interest to be conveyed by Seller to Purchaser or any part
thereof by, through and under Seller and its Affiliates, but not otherwise, subject to
Permitted Encumbrances, but shall otherwise be without warranty of title, express, implied
or statutory, except that the Conveyance shall transfer to Purchaser all rights or actions
on title warranties given or made by Seller’s predecessors (other than Affiliates of
Seller), to the extent Seller may legally transfer such rights.

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     (b) Notwithstanding anything to the contrary in Section 3.1(a) and the Conveyance,
Section 3.4 shall provide Purchaser’s exclusive remedy in respect of Asserted Title Defects
reported in accordance with this Article 3, and, Purchaser shall not be entitled to make any
claims against Seller or any of its Affiliates under Seller’s special warranty of title in
the Conveyance against any such Asserted Title Defect. Except to the extent expressly
provided herein (including Purchaser’s rights with respect to any breach of Seller’s
covenant under Section 6.10(f) and Purchaser’s rights under this Article 3) and except under
the special warranty of title set forth in the Conveyance, Purchaser shall not be entitled
to make any claims against Seller or any of its Affiliates with respect to any Title Defects
to the extent that such Title Defects pertain to the PM Assets (provided that if such Title
Defects affect both the PM Assets and the other Assets, then Purchaser shall be entitled to
any and all of its rights and remedies with respect to such Title Defects insofar and only
insofar as such Title Defects affect such other Assets).

     Section 3.2 Definition of Defensible Title. As used in this Agreement, the term “Defensible Title” means that title of Seller with respect
to the Assets which, subject to Permitted Encumbrances:

     (a) entitles Seller to receive throughout the duration of the productive life of any
Review Well (after satisfaction of all royalties, overriding royalties, nonparticipating
royalties, net profits interests or other similar burdens on or measured by production of
Hydrocarbons), not less than the “Conveyed Net Revenue Interest” share shown in Exhibit A-2
for such Review Well of all Hydrocarbons produced and sold from such Review Well, as
applicable, except (solely to the extent that such actions do not cause a breach of Seller’s
covenants under Section 6.10 hereof) decreases in connection with those operations in which,
from or after the date of this Agreement, Seller may be a nonconsenting co-owner, decreases
resulting from the establishment or amendment of pools or units from and after the date of
this Agreement, and decreases required to allow other working interest owners to make up
past underproduction or pipelines to make up past underdeliveries;

     (b) obligates Seller to bear a percentage of the costs and expenses for the maintenance
and development of, and operations relating to, a Review Well not greater than the “Conveyed
Working Interest” shown in Exhibit A-2 for such Review Well without increase throughout the
productive life of such Review Well, as applicable, except as stated in Exhibit A-2,
respectively, and except increases resulting from contribution requirements with respect to
defaulting co-owners under applicable operating agreements and increases that are
accompanied by at least a proportionate increase in Seller’s net revenue interest; and

     (c) is free and clear of all Encumbrances.

     As used in this Agreement, the term “Encumbrance” means any lien, charge, encumbrance,
irregularity or other defect (including a discrepancy or error in net revenue interest or working
interest as set forth in Exhibit A-2 for a Review Well). The term “Title Defect” means, with
respect to any Asset that is a Non-PM Asset, any Encumbrance that would cause

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Seller not to have
Defensible Title to such Non-PM Asset, and with respect to any Asset that is a PM Asset, the term
“Title Defect” means any Encumbrance created by, through or under Seller or any of its Affiliates
that would cause Seller not to have Defensible Title to such PM Asset. The term “Asserted Title
Defect” means a Title Defect reported by Purchaser pursuant to Section 3.4 hereof.

     Section 3.3 Definition of Permitted Encumbrances. As used herein, the term “Permitted Encumbrances” means any or all of the following:

     (a) lessors’ royalties and any overriding royalties, reversionary interests and other
burdens on production of Hydrocarbons to the extent that they do not, individually or in the
aggregate, reduce the “Conveyed Net Revenue Interest” below that shown in Exhibit A-2 with
respect to any Review Well or increase the “Conveyed Working Interest” above that shown in
Exhibit A-2 with respect to any Review Well without at least a proportionate increase in the
net revenue interest for such Review Well;

     (b) all Contracts, to the extent that they do not, individually or in the aggregate,
reduce the “Conveyed Net Revenue Interest” below that shown in Exhibit A-2 with respect to
any Review Well or increase the “Conveyed Working Interest” above that shown in Exhibit A-2
with respect to any Review Well without at least a proportionate increase in the net revenue
interest for such Review Well;

     (c) Preferential Rights;

     (d) third-party consent requirements and similar restrictions with respect to which
waivers or consents are obtained by Seller from the appropriate parties prior to the Closing
Date or the appropriate time period for asserting the right has expired or which are
expressly not required to be satisfied prior to a transfer;

     (e) liens for current Taxes or assessments not yet delinquent or, if delinquent, being
contested in good faith by appropriate actions and listed on Exhibit A-5;

     (f) materialman’s, mechanic’s, repairman’s, employee’s, contractor’s, operator’s and
other similar liens or charges arising in the ordinary course of business for amounts not
yet delinquent (including any amounts being withheld as provided by law), or if delinquent,
being contested in good faith by appropriate actions and listed on Exhibit A-6;

     (g) all rights to consent, by required notices to, filings with, or other actions by
Governmental Authorities in connection with the sale or conveyance of oil and gas leases,
licenses, concessions, production sharing agreements or interests therein if they are
customarily obtained subsequent to the sale or conveyance;

     (h) rights of reassignment arising upon final intention to abandon or release the
Leases included in the Proration Unit for such Review Well;

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     (i) easements, rights-of-way, servitudes, permits and other rights in respect of
surface and subsurface operations not involving the extraction of Hydrocarbons to the extent
that they do not, individually or in the aggregate (i) reduce the “Conveyed Net Revenue
Interest” below that shown in Exhibit A-2 with respect to any Review Well, (ii) increase the
“Conveyed Working Interest” above that shown in Exhibit A-2 with respect to any Review Well
without at least a proportionate increase in the “Conveyed Net Revenue Interest” for such
Review Well, or (iii) materially detract from the value of, or materially interfere with the
use, ownership or operation of, any Review Well subject thereto or affected thereby (as
currently used, owned and operated) and which would be accepted by a reasonably prudent
purchaser engaged in the business of owning and operating oil and gas properties in the
Appalachian Basin;

     (j) calls on production under existing Contracts that are listed on Exhibit A-7;

     (k) all rights reserved to or vested in any Governmental Authority to control or
regulate any of the Wells or Undeveloped Lease Interests in any manner and all obligations
and duties under all applicable Laws or under any franchise, grant, license or permit issued
by any such Governmental Authority;

     (l) any Encumbrance which is discharged by Seller at or prior to Closing;

     (m) any rights related to coal, coal seams or coal mining, whether statutory or
otherwise, other than rights to explore for, develop and produce coalbed methane and
associated Hydrocarbons and rights attendant thereto;

     (n) any matters shown on Exhibit G; and

     (o) any other Encumbrances which do not, individually or in the aggregate, (i) reduce
the “Conveyed Net Revenue Interest” below that shown in Exhibit A-2 with respect to any
Review Well, (ii) increase the “Conveyed Working Interest” above that shown in Exhibit A-2
with respect to any Review Well without at least a proportionate increase in the net revenue
interest for such Review Well, or (iii) materially detract from the value of or materially
interfere with the use, ownership or operation of the Review
Wells subject thereto or affected thereby (as currently used, owned or operated) and
which would be accepted by a reasonably prudent purchaser engaged in the business of owning
and operating oil and gas properties in the Appalachian Basin.

     Section 3.4 Notice of Asserted Title Defects; Defect Adjustments.

     (a) To assert a claim of a Title Defect prior to Closing, Purchaser must deliver a
claim notice to Seller on or before 5:00 p.m. EDT on April 25, 2007 (the “Title Claim
Date”), except as otherwise provided under Section 3.5 or Section 3.6; provided that
Purchaser agrees to furnish Seller at the end of every week period following the execution
of this Agreement and prior to the Title Claim Date with a claim notice if any officer of
Purchaser or its Affiliates discovers or learns of any Title Defect during such period.
Each such notice shall be in writing and shall include (i) a description of the Asserted
Title Defect(s), (ii) the Wells and/or Undeveloped Lease Interests affected,

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(iii) the
Allocated Values of the Wells and/or Undeveloped Lease Interests subject to such Asserted
Title Defect(s), (iv) supporting documents reasonably necessary for Seller (as well as any
title attorney or examiner hired by Seller) to verify the existence of such Asserted Title
Defect(s) and (v) the amount by which Purchaser reasonably believes the Allocated Values of
those Wells and/or Undeveloped Lease Interests are reduced by such Asserted Title Defect(s)
and the computations and information upon which Purchaser’s belief is based. Subject to
Purchaser’s rights under the special warranty of title described in Section 3.1(a) and its
rights with respect to any breach of Seller’s covenant under Section 6.10(f), Purchaser
shall be deemed to have waived all Title Defects of which Seller has not been given notice
on or before the Title Claim Date.

     (b) In the event that Purchaser notifies Seller of a Title Defect before the Title
Claim Date, Seller shall have the right, but not the obligation, to attempt, at its sole
cost, to cure or remove any Asserted Title Defects of which it has been notified by
Purchaser. If Seller so elects to cure or remove any Asserted Title Defect, Purchaser shall
use commercially reasonable efforts to cooperate with Seller’s efforts to cure or remove
such Asserted Title Defect. If prior to Closing, Seller has been unable to cure or remove
any Asserted Title Defect, then Seller and Purchaser mutually shall elect to have one of the
following options apply:

     (i) Remove the interests in such Well or Undeveloped Lease Interest included in
the Assets that is subject to such Asserted Title Defect and those other Assets
primarily related to such interest in such Well or Undeveloped Lease Interest from
the transaction contemplated by this Agreement. Such removed Assets shall not be
assigned at the Closing, shall become “Excluded Assets” for all purposes hereunder
and the Purchase Price shall be reduced by an amount equal to the Allocated Value
for such Assets, provided that if any Asserted Title Defect is cured at any time
prior to one hundred eighty (180) days after Closing, within five (5) days of
Seller’s notice to Purchaser of such event, the Parties shall conduct a subsequent
Closing (in accordance with the same terms hereof) for the
purchase and sale of the Excluded Asset that was subject to such cured Asserted
Title Defect.

     (ii) Assign the Asset subject to the Asserted Title Defect to Purchaser at
Closing, and defend, indemnify and hold the Purchaser Indemnified Persons and
Purchaser Successors harmless from and against all Damages that arise out of or that
any such Person may suffer as a result of such Asserted Title Defect pursuant to a
form of indemnity agreement mutually agreeable to the Parties.

     (iii) Assign the Asset subject to the Asserted Title Defect to Purchaser at
Closing, and reduce the Purchase Price in accordance with Section 3.4(c).

Provided that, if Seller and Purchaser are unable to mutually agree on one of the foregoing
options, then the Parties shall be deemed to have chosen the option under subsection (i) above.

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     (c) The Purchase Price shall be reduced by an amount (the “Asserted Title Defect
Amount”) equal to the reduction in the Allocated Value for the interest in such Well or
Undeveloped Lease Interest included in the Assets that is subject to an uncured Asserted
Title Defect, which reduction is caused by such uncured Asserted Title Defect as determined
pursuant to Section 3.4(e); provided that no reduction shall be made in the Purchase Price
with respect to any Asserted Title Defect for which an election has been made pursuant to
Section 3.4(b)(ii).

     (d) Except for Purchaser’s rights under the special warranty of title described in
Section 3.1(a) and its rights with respect to any breach of Seller’s covenant under Section
6.10(f), Section 3.4(c) shall, to the fullest extent permitted by applicable Laws, be the
exclusive right and remedy of Purchaser against Seller or its Affiliates with respect to any
Title Defect attributable to the Combined Assets.

     (e) The Asserted Title Defect Amount resulting from an Asserted Title Defect shall be
determined as follows:

     (i) if Purchaser and Seller agree on the Asserted Title Defect Amount, that
amount shall be the Asserted Title Defect Amount;

     (ii) if the Asserted Title Defect is an Encumbrance which is undisputed and
liquidated in amount, then the Asserted Title Defect Amount shall be the amount
necessary to be paid to remove the Asserted Title Defect from the affected Well or
Undeveloped Lease Interest;

     (iii) if the Asserted Title Defect represents a discrepancy between (A) the
actual net revenue interest included in the Assets for any Well or Undeveloped Lease
Interest and (B) the “Conveyed Net Revenue Interest” stated on Exhibit A-2 for such
Review Well, then the Asserted Title Defect Amount shall be the product of the
Allocated Value for the interest in the affected Well or Undeveloped Lease Interest
included in the Assets multiplied by a fraction, the numerator of which is the net
revenue interest decrease and the denominator of
which is the net revenue interest stated on Exhibit A-2 for such interest;
provided that if the Asserted Title Defect does not affect a Review Well throughout
the life of such Review Well, the Asserted Title Defect Amount determined under this
Section 3.4(e)(iii) shall be reduced accordingly;

     (iv) if the Asserted Title Defect represents an Encumbrance of a type not
described in subsections (i), (ii) or (iii) above, the Asserted Title Defect Amount
shall be determined by taking into account the Allocated Value of the interest in
the Review Well included in the Assets so affected, the portion of such interest in
the Review Well affected by the Asserted Title Defect, the legal effect of the
Asserted Title Defect, the potential economic effect of the Asserted Title Defect
over the life of the affected Review Well, the values placed upon the Asserted Title
Defect by Purchaser and Seller and such other factors as are necessary to make a
proper evaluation; and

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     (v) notwithstanding anything to the contrary in this Article 3, (A) except for
adjustments required by Section 3.6, the aggregate Asserted Title Defect Amounts
attributable to all Asserted Title Defects upon any given interest in a Review Well
included in the Assets shall not exceed the Allocated Value of such interest in the
Review Well and (B) except for adjustments required by Section 3.5 or Section 3.6,
there shall be no Purchase Price adjustment for Asserted Title Defects unless and
until the aggregate Asserted Title Defect Amounts for all interests in the Review
Wells included in the Assets for which claim notices were timely delivered pursuant
to Section 3.4(a) exceed Two Million Six Hundred Twenty Thousand Dollars
(US$2,620,000.00), and then only to the extent that the aggregate Asserted Title
Defect Amounts exceed Two Million Six Hundred Twenty Thousand Dollars
(US$2,620,000.00);

     (vi) if an Asserted Title Defect of the type not described in subsections (i),
(ii) or (iii) above is reasonably susceptible of being cured, the Asserted Title
Defect Amount determined under subsection (iv) above shall not be greater than the
lesser of (1) the reasonable cost and expense of curing such Asserted Title Defect
or (2) the share of such curative work cost and expense which is allocated to such
interest in such Review Well included in the Assets pursuant to subsection (vii)
below; and

     (vii) the Asserted Title Defect Amount with respect to a Review Well shall be
determined without duplication of any costs or losses (i) included in another
Asserted Title Defect Amount hereunder, or (ii) included in a casualty loss under
Section 3.6. To the extent that the cost to cure any Asserted Title Defect will
result in the curing of all or a part of one or more other Asserted Title Defects,
such cost of cure shall be allocated for purposes of Section 3.4(e)(vi) among the
interests in the Review Wells so affected on a fair and reasonable basis.

     (f) Seller and Purchaser shall attempt to agree on all Asserted Title Defects and
Asserted Title Defect Amounts by two (2) Business Days prior to the Closing Date. If Seller
and Purchaser are unable to agree by that date, the average of Seller’s and Purchaser’s
estimates with respect to the Asserted Title Defect Amounts for the Asserted Title Defects
shall be used to determine the Closing Payment pursuant to Section 8.4(a), and all Asserted
Title Defects and Asserted Title Defect Amounts in dispute shall be exclusively and finally
resolved by arbitration pursuant to this Section 3.4(f). During the ten (10) Business Day
period following the Closing Date, Asserted Title Defects and Asserted Title Defect Amounts
in dispute shall be submitted to an attorney with at least ten (10) years of experience in
oil and gas titles in southwestern Virginia as selected by mutual agreement of Purchaser and
Seller (the “Title Arbitrator”). The arbitration proceeding shall be held in Pittsburgh,
Pennsylvania and shall be conducted in accordance with the Commercial Arbitration Rules of
the American Arbitration Association in effect as of the date hereof, to the extent such
rules do not conflict with the terms of this Section 3.4(f). The Title Arbitrator’s
determination shall be made within twenty (20) days after submission of the matters in
dispute and shall be final and binding

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upon both Parties, without right of appeal. In
making his determination, the Title Arbitrator shall be bound by the rules set forth in
Section 3.4(e) and may consider such other matters as in the opinion of the Title Arbitrator
are necessary or helpful to make a proper determination. Additionally, with the prior
written consent of Purchaser and Seller, the Title Arbitrator may consult with and engage
disinterested third parties to advise the Title Arbitrator, including title attorneys from
other states and petroleum engineers. In no event shall any Asserted Title Defect Amount
exceed the estimate given by Purchaser in its claim notice delivered in accordance with
Section 3.4(a). The Title Arbitrator shall act as an expert for the limited purpose of
determining the specific disputed Asserted Title Defects and Asserted Title Defect Amounts
submitted by either Party and may not award damages, interest or penalties to either Party
with respect to any matter. Seller and Purchaser shall each bear its own legal fees and
other costs of presenting its case. Each Party shall bear one-half of the costs and
expenses of the Title Arbitrator.

     Section 3.5 Consents to Assignment and Preferential Rights to Purchase.

          (a) Seller will use reasonable efforts, consistent with industry practices in transactions of
this type, to identify, with respect to all Assets, the names and addresses of all parties holding
Preferential Rights and Consents applicable to the transactions contemplated hereby. In attempting
to identify the names and addresses of such parties holding such Preferential Rights and Consents,
Seller shall in no event be obligated to go beyond its own records. Seller will request, from the
parties so identified (and from any parties identified by Purchaser prior to Closing who have
Preferential Rights or from whom a Consent may be required), in accordance with the documents
creating such rights, execution of waivers of Preferential Rights or Consents so identified.
Seller shall have no obligation other than to identify such Preferential Rights and Consents and to
so request such execution of waivers of Preferential Rights and Consents (including, without
limitation, Seller shall have no obligation to assure that such waivers of Preferential Rights and
Consents are obtained).

          (b) With respect to Preferential Rights but not Consents, if a Person from whom a waiver of a
Preferential Right is requested refuses to give such waiver prior to Closing, the interest in the
Asset subject to such Preferential Right will be excluded from the transaction contemplated hereby,
such interest in such Asset will become an “Excluded Asset” for all purposes hereunder (except in
the case of any subsequent transfer of such interest in such Asset to Purchaser pursuant to the
following sentence) and the Purchase Price will be adjusted downward by the Allocated Value
(proportionately reduced to the excluded interest) for such interest in such Asset. If within
ninety (90) days following Closing such holder does waive its Preferential Right, then Purchaser
agrees that, within five (5) days following Seller’s notice thereof, the Parties hereto will
conduct a subsequent Closing (in accordance with same terms hereof) for the purchase and sale of
such excluded Asset.

          (c) If (i) an Asset is subject to a Consent that prohibits the transfer of such Asset without
compliance with the provisions of such Consent, (ii) the failure to comply with or obtain such
Consent will result in a termination or other material impairment of any rights in relation to such
Asset and (iii) such Consent is not obtained or complied with prior to the Closing, then

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unless
otherwise agreed to by Purchaser and Seller, the Asset or portion thereof affected by such Consent
will be excluded from the transactions contemplated hereby, such Asset will become an “Excluded
Asset” for all purposes hereunder (except in the case of any subsequent transfer of such Asset to
Purchaser pursuant to the following sentence), and the Purchase Price will be adjusted downward by
the Allocated Value for such excluded Asset or if no Allocated Value was given for such excluded
Asset, then a value derived from the Allocated Value of the Assets to which such excluded Asset
relates. If, within ninety (90) days following Closing, such Consent is obtained or otherwise
complied with, then Purchaser agrees that, within five (5) days following Seller’s notice thereof,
the Parties hereto will conduct a subsequent Closing (in accordance with the same terms hereof) for
the purchase and sale of such excluded Asset.

          (d) To the extent that the consent of PMOG with respect to the assignment of the Assets
contemplated hereby is required under any agreement or arrangement, as of the Closing, PMOG hereby
irrevocably grants such consent.

     Section 3.6 Casualty or Condemnation Loss. Subject to the provisions of Section 7.1(f) and Section 7.2(f) hereof, if, after the date of
this Agreement but prior to the Closing Date, any portion of the Assets is destroyed by fire or
other casualty or is taken in condemnation or under right of eminent domain, Purchaser shall
nevertheless be required to close and the Parties mutually shall elect prior to Closing one of the
following options: (i) to have Seller cause the Assets affected by any casualty to be repaired or
restored, at Seller’s sole cost, as promptly as reasonably practicable (which work may extend after
the Closing Date), (ii) to have Seller indemnify Purchaser through a document reasonably acceptable
to Seller and Purchaser against any costs or expenses that Purchaser reasonably incurs to repair
the Assets subject to any casualty or (iii) to treat such casualty or taking as an Asserted Title
Defect with respect to the affected Assets under Section 3.4; provided that in the event that the
Purchase Price is adjusted pursuant to Section 3.4(b)(iii), then in no event shall such Asserted
Title Defect be subject to the provisions of Section 3.4(e)(v) hereof; and provided further that if
the Parties are unable to mutually elect one of the foregoing options, then the Parties shall be
deemed to have chosen the option under subsection (iii) above. In each case, Seller shall retain
all rights to insurance and other claims against third parties with respect to the casualty or
taking except to the extent the Parties otherwise agree in writing.

ARTICLE 4

REPRESENTATIONS AND WARRANTIES OF SELLER

     Section 4.1 Disclaimers.

     (a) Except as expressly set forth in Article 3, Article 4, in the certificate delivered
by Seller at Closing pursuant to Section 8.2(b) or in the Conveyance, (i) Seller makes no
representations or warranties, express or implied, with respect to the Combined Assets or
the transactions contemplated hereby and (ii) Seller expressly disclaims all liability and
responsibility for any representation, warranty, statement or information with respect to
the Combined Assets or the transactions contemplated hereby made or communicated (orally or
in writing) to Purchaser or any of its Affiliates, employees, agents, consultants or
representatives (including any opinion, information, projection or advice that may

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have been
provided to Purchaser by any officer, director, employee, agent, consultant, representative
or advisor of Seller or any of its Affiliates).

     (b) EXCEPT AS EXPRESSLY REPRESENTED OTHERWISE IN ARTICLE 3, ARTICLE 4, IN THE
CERTIFICATE DELIVERED BY SELLER AT CLOSING PURSUANT TO SECTION 8.2(b) OR IN THE CONVEYANCE,
WITHOUT LIMITING THE GENERALITY OF THE FOREGOING, SELLER EXPRESSLY DISCLAIMS ANY
REPRESENTATION OR WARRANTY, EXPRESS OR IMPLIED, AS TO (I) TITLE TO ANY OF THE COMBINED
ASSETS, (II) THE CONTENTS, CHARACTER OR NATURE OF ANY INFORMATION PROVIDED BY SELLER WITH
RESPECT TO THE COMBINED ASSETS, OR ANY REPORT OF ANY PETROLEUM ENGINEERING CONSULTANT, OR
ANY GEOLOGICAL OR SEISMIC DATA OR INTERPRETATION, RELATING TO THE COMBINED ASSETS, (III) THE
QUANTITY, QUALITY OR RECOVERABILITY OF HYDROCARBONS IN OR FROM THE COMBINED ASSETS, (IV) ANY
ESTIMATES OF THE VALUE OF THE COMBINED ASSETS OR FUTURE REVENUES GENERATED BY THE COMBINED
ASSETS, (V) THE PRODUCTION OF HYDROCARBONS FROM THE COMBINED ASSETS, OR WHETHER PRODUCTION
HAS BEEN CONTINUOUS, OR IN PAYING QUANTITIES, (VI) THE MAINTENANCE, REPAIR, CONDITION,
QUALITY, SUITABILITY, DESIGN OR MARKETABILITY OF THE COMBINED ASSETS, OR (VII) ANY OTHER
MATERIALS OR INFORMATION THAT MAY HAVE BEEN MADE AVAILABLE OR COMMUNICATED TO PURCHASER OR
ITS AFFILIATES, OR ITS OR THEIR EMPLOYEES, AGENTS, CONSULTANTS, REPRESENTATIVES OR ADVISORS
IN CONNECTION WITH THE TRANSACTIONS CONTEMPLATED BY THIS AGREEMENT OR ANY DISCUSSION OR
PRESENTATION RELATING THERETO, AND FURTHER DISCLAIMS ANY REPRESENTATION OR WARRANTY, EXPRESS
OR IMPLIED, OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR CONFORMITY TO MODELS OR
SAMPLES OF
MATERIALS OF ANY EQUIPMENT, IT BEING EXPRESSLY UNDERSTOOD AND AGREED BY THE PARTIES
HERETO THAT, SUBJECT TO SELLER’S REPRESENTATIONS AND WARRANTIES SET FORTH IN ARTICLE 3,
ARTICLE 4, IN THE CERTIFICATE DELIVERED BY SELLER AT CLOSING PURSUANT TO SECTION 8.2(b) AND
IN THE CONVEYANCE, PURCHASER HAS MADE OR CAUSED TO BE MADE SUCH INSPECTIONS AS PURCHASER
DEEMS APPROPRIATE, PURCHASER IS RECEIVING EQUIPMENT AND ALL OTHER TANGIBLE PROPERTY IN ITS
PRESENT STATUS, CONDITION AND STATE OF REPAIR, “AS IS” AND “WHERE IS” WITH ALL FAULTS.

     (c) Any representation “to the knowledge of Seller” or “to Seller’s knowledge” is
limited to matters within the actual conscious awareness of Ted O’Brien, Lester Zitkus, Mike
Canich, John Centofanti, Ken Kirk, Rick Crites and Phil Elliott.

     (d) Inclusion of a matter on a schedule attached hereto with respect to a
representation or warranty that addresses matters having a Material Adverse Effect shall not
be deemed an indication that such matter does, or may, have a Material Adverse

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Effect.
Matters may be disclosed on a schedule for purposes of information only. As used herein,
“Material Adverse Effect” means any change, inaccuracy, circumstance, event, result,
occurrence, condition or an act (each, an “Event”) that has had or could reasonably be
expected to have a material adverse effect on the ownership, operation or value of the
Assets, taken as a whole or the ability of Seller or Purchaser, as applicable, to consummate
the transactions contemplated hereby or meet its obligations under this Agreement and the
documents to be executed hereunder; provided, however, that “Material Adverse Effect” shall
not include Events resulting from general changes in Hydrocarbon prices; general changes in
the Hydrocarbon exploration and production industry or general economic or political
conditions; civil unrest, insurrection or similar disorders; or changes in Laws.

     (e) Subject to the foregoing provisions of this Section 4.1, and the other terms and
conditions of this Agreement, Seller represents and warrants to Purchaser the matters set
out in the remainder of this Article 4.

     Section 4.2 Seller.

     (a) Existence and Qualification. Seller is a corporation duly organized,
validly existing and in good standing under the laws of the Commonwealth of Pennsylvania and
is duly qualified to do business as a foreign corporation in the Commonwealth of Virginia.

     (b) Power. Seller has the corporate power to enter into and perform this
Agreement (and all documents required to be executed and delivered by Seller at Closing) and
to consummate the transactions contemplated by this Agreement (and such documents).

     (c) Authorization and Enforceability. The execution, delivery and performance
of this Agreement by Seller (and all documents required to be executed and delivered by
Seller at Closing) and the consummation of the transactions contemplated hereby and thereby,
have been duly and validly authorized by all necessary corporate action on the part of
Seller. This Agreement has been duly executed and delivered by Seller (and all documents
required to be executed and delivered by Seller at Closing shall be duly executed and
delivered by Seller) and this Agreement constitutes (and at the Closing such documents shall
constitute) the valid and binding obligations of Seller, enforceable in accordance with
their terms except as such enforceability may be limited by applicable bankruptcy or other
similar Laws affecting the rights and remedies of creditors generally, as well as to general
principles of equity (regardless of whether such enforceability is considered in a
proceeding in equity or at Law).

     (d) No Conflicts. The execution, delivery and performance of this Agreement by
Seller (and all documents required to be executed and delivered by Seller at Closing), and
the consummation of the transactions contemplated by this Agreement (and by such documents)
shall not (i) violate any provision of the certificate of incorporation or bylaws of Seller,
(ii) result in default (with due notice or lapse of time or both) or the creation of

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any
lien or encumbrance or give rise to any right of termination, cancellation or acceleration
under any note, bond, mortgage, indenture, license or agreement to which Seller is a party
or by which it is bound, (iii) violate any judgment, order, ruling, or decree applicable to
Seller as a party in interest, or (iv) violate any Laws applicable to Seller or any of the
Assets, except any matters described in clauses (ii), (iii), or (iv) above which would not
have a Material Adverse or as set forth on Schedule 4.2(d).

     Section 4.3 Liability for Brokers’ Fees. Purchaser shall not directly or indirectly have any responsibility, liability or expense, as a
result of undertakings or agreements of Seller or its Affiliates, for brokerage fees, finder’s
fees, agent’s commissions or other similar forms of compensation to an intermediary in connection
with the negotiation, execution or delivery of this Agreement or any agreement or transaction
contemplated hereby.

     Section 4.4 Consents, Approvals or Waivers. Except (a) for preferential rights (collectively “Preferential Rights”) to purchase and all
Lease or other provisions restricting assignment without consent (“Consents”) which would be
applicable to the transactions contemplated hereby that are set forth on Schedule 4.4 (the
“Scheduled Transfer Requirements”), (b) as would not, individually or in the aggregate, have a
Material Adverse Effect, and (c) for approvals customarily obtained from a Governmental Authority
post-Closing, neither the execution and delivery of this Agreement (nor any documents required to
be executed by Seller at Closing), nor the consummation of the transactions contemplated hereby nor
thereby, nor the compliance with the terms hereof nor thereof (in each case) by Seller will (i)
conflict with or result in a violation of any provision of, or constitute (with or without the
giving of notice or the passage of time or both) a default under, or give rise to (with or without
the giving of notice or the passage of time or both) any right of termination, cancellation, or
acceleration under, any bond, debenture, note, mortgage or indenture, or any lease, contract,
agreement, or other instrument or obligation to which Seller is a
party or by which Seller or any of the Assets may be bound, or (ii) violate any applicable Law
binding upon Seller or the Assets. Except for the (x) Scheduled Transfer Requirements, and (y) for
approvals customarily obtained from a Governmental Authority post-Closing, the execution of this
Agreement by Seller and the consummation of the transactions contemplated hereby by Seller will not
require any material consent, approval or waiver of any Governmental Authority or other third
Person, or create a right in favor of any Person to purchase all or any material part of the
Assets.

     Section 4.5 Litigation. Except as disclosed on Schedule 4.5A or Schedule 4.5B and except for the Party Lawsuit, there
are no actions, suits or proceedings pending, or to Seller’s knowledge, threatened in writing, by
or before any Governmental Authority or arbitrator with respect to the Assets or Seller’s or any of
its Affiliates’ ownership, operation or use thereof. To Seller’s knowledge, no written notice from
any third Person (including any Governmental Authority) claiming material Damages or any material
breach of duty or care has been received by Seller or any of its Affiliates relating to the Assets
or Seller’s or any of its Affiliates’ ownership, operation or use thereof, except for the suits,
actions and proceedings set forth in Schedule 4.5A or Schedule 4.5B and the Party Lawsuit.

     Section 4.6 Taxes. Except as disclosed on Schedule 4.6: (i) all material Tax Returns required to be filed with
respect to the Assets have been duly and timely filed; (ii) each such Tax

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Return is in all material
respects true, correct and complete; (iii) all material Taxes owed with respect to the Assets have
been timely paid in full; (iv) there are no Encumbrances for Taxes on any of the Assets other than
Permitted Encumbrances; (v) there is no outstanding dispute or claim concerning any material Taxes
with respect to the Assets, and, to Seller’s knowledge, no assessment, deficiency or adjustment has
been asserted or proposed with respect thereto; and (vi) to Seller’s knowledge, all of the Assets
have been properly listed and described on the property tax rolls for the taxing units in which
such Assets are located and no portion of the Assets constitutes omitted property for property tax
purposes.

     Section 4.7 Environmental Laws. To Seller’s knowledge, Seller and its Affiliates have complied in all respects with, and the
operation of the Assets has been in compliance in all respects with, all applicable Laws relating
to the environment (“Environmental Laws”), except such failures to comply as, individually or in
the aggregate, would not have a Material Adverse Effect. Except for contamination that would not,
individually or in the aggregate, have a Material Adverse Effect, to Seller’s knowledge, there has
been no contamination of groundwater, surface water or soil resulting from activities relating to
the Assets, which requires remediation under applicable Environmental Laws.

     Section 4.8 Compliance with Laws. Except with respect to Environmental Laws, which are addressed in Section 4.7, and except as
disclosed on Schedule 4.8, to Seller’s knowledge, Seller and its Affiliates have complied in all
respects with, and the Assets have been operated and maintained in compliance in all respects with,
all applicable Laws, except such failures to comply as would not, individually or in the aggregate,
have a Material Adverse Effect.

     Section 4.9 Contracts. Neither Seller, nor, to the knowledge of Seller, any other Person is in default under any
Contract or any contract or other agreement otherwise affecting the Assets, except as disclosed on
Schedule 4.5A, Schedule 4.5B or Schedule 4.9 and except for such defaults as would not,
individually or in the aggregate, have a Material Adverse Effect.

     Section 4.10 Payments for Production. Except as disclosed on Schedule 4.10, all proceeds from the sale of Hydrocarbons attributable to
the Assets are currently being paid in full to Seller (after Tax withholdings or similar deductions
required by the terms of the Contracts or applicable Law). Further, Seller is not obligated by
virtue of a take or pay payment, advance payment or other similar payment (other than royalties and
similar arrangements established in the Leases and reflected in the net revenue interests set forth
in Exhibit A-2 or except as is otherwise reflected in such exhibits), to deliver Hydrocarbons, or
proceeds from the sale thereof, attributable to the Properties included in the Assets at some
future time without receiving payment therefor at or after the time of delivery.

     Section 4.11 Production Imbalances. Except as set forth in Schedule 4.11, as of the Effective Time and as of the date of this
Agreement, Seller has no production imbalances with co-owners of the Properties included in the
Assets as a result of past production in excess of the share to which it is entitled.

     Section 4.12 Permits, etc.. To Seller’s knowledge, except as disclosed on Schedule 4.12, Seller has obtained and is
maintaining all material federal, state and local governmental

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licenses, permits, franchises,
orders, exemptions, variances, waivers, authorizations, certificates, consents, rights, privileges
and applications therefor (the “Governmental Permits”) that are presently necessary or required for
the ownership and operation of the Assets as currently owned and operated. To Seller’s knowledge,
except as disclosed in Schedule 4.12, (a) the Assets have been operated in all material respects in
accordance with the conditions and provisions of such Governmental Permits, and (b) no written
notices of material violation of such Governmental Permits have been received by Seller or its
Affiliates.

     Section 4.13 Outstanding Capital Commitments. As of the date hereof, there are no outstanding authorities for expenditures or other
commitments to make capital expenditures which are binding on the Assets and which Seller
reasonably anticipates will individually require expenditures by the owner of the Assets after the
Effective Time other than (a) those reflected in the capital budget included as Schedule 4.13 and
(b) those of which an officer of Purchaser is aware because of the Purchaser’s ownership of working
interests included in the Pre-Effective Time Interests.

     Section 4.14 Plugging and Abandonment. Except as set forth in Schedule 4.14, from the Effective Time through the date of this
Agreement, Seller has not abandoned, and is not in the process of abandoning, any Wells included in
the Assets (nor has it removed, nor is it in the process of removing, any material items of
personal property located upon the Properties included in the Assets, except those replaced by
items of substantially equivalent suitability and value). Except as set forth in
Schedule 4.14 or as otherwise would not have a Material Adverse Effect, there are no Wells included
in the Assets that:

     (a) Seller is currently required by Law or by Contract to plug and abandon as of the
date hereof;

     (b) formerly produced but are currently shut in or temporarily abandoned; or

     (c) have been plugged and abandoned but have not been plugged in accordance with all
applicable requirements of each Governmental Authority having jurisdiction over such
Properties.

     Section 4.15 Condition of Equipment, etc.. Except as set forth in Schedule 4.15, to the knowledge of Seller, all Wells, fixtures,
facilities and Equipment included in the Assets (other than the PM Wells) have been maintained in
all material respects in a state of adequate repair consistent with industry standards in the
Appalachian Basin and are otherwise generally adequate for the normal operation thereof.

     Section 4.16 Payments of Royalties and Expenses. Except as set forth on Schedule 4.5A or Schedule 4.5B, to Seller’s knowledge, royalties,
overriding royalties, compensatory royalties and other payments due from or in respect of
production from the Properties included in the Non-PM Assets and all Property Costs attributable to
the Assets have been properly and correctly paid or provided for in all material respects by
Seller.

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     Section 4.17 Suspense. Schedule 4.17 sets forth, by Well, the amount of money held in suspense by Seller out of the
collected proceeds from the sale of Hydrocarbons attributable to the Assets.

     Section 4.18 Absence of Certain Events. Except as disclosed on Schedule 4.18 or as contemplated by this Agreement, since the Effective
Time, there has not been any damage, destruction or loss, whether covered by insurance or not, with
respect to the Assets that has had or is reasonably likely to have a Material Adverse Effect.

     Section 4.19 Information. To Seller’s knowledge, Seller has complied in all material respects with Purchaser’s requests
for supporting documentation and information relating to the transactions contemplated by this
Agreement to the extent Seller has such documentation or information in Seller’s or its Affiliates’
possession or control.

ARTICLE 5

REPRESENTATIONS AND WARRANTIES OF PURCHASER

     Purchaser represents and warrants to Seller the following:

     Section 5.1  Existence and Qualification. Purchaser is a corporation organized, validly existing and in good standing under the Laws of
the Commonwealth of Virginia.

     Section 5.2 Power. Purchaser has the corporate power to enter into and perform this Agreement (and all documents
required to be executed and delivered by Purchaser at Closing) and to consummate the transactions
contemplated by this Agreement (and such documents).

     Section 5.3 Authorization and Enforceability. The execution, delivery and performance of this Agreement by Purchaser (and all documents
required to be executed and delivered by Purchaser at Closing), and the consummation of the
transactions contemplated hereby and thereby, have been duly and validly authorized by all
necessary corporate action on the part of Purchaser. This Agreement has been duly executed and
delivered by Purchaser (and all documents required to be executed and delivered by Purchaser at
Closing will be duly executed and delivered by Purchaser) and this Agreement constitutes (and at
the Closing such documents will constitute) the valid and binding obligations of Purchaser,
enforceable in accordance with their terms except as such enforceability may be limited by
applicable bankruptcy or other similar Laws affecting the rights and remedies of creditors
generally, as well as to general principles of equity (regardless of whether such enforceability is
considered in a proceeding in equity or at Law).

     Section 5.4 No Conflicts. The execution, delivery and performance of this Agreement by Purchaser (and all documents
required to be executed and delivered by Purchaser at Closing), and the consummation of the
transactions contemplated by this Agreement and (by such documents) will not (a) violate any
provision of the certificate of incorporation or bylaws of Purchaser, (b) result in a default (with
due notice or lapse of time or both) or the creation of any lien or encumbrance or give rise to any
right of termination, cancellation or acceleration under

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any note, bond, mortgage, indenture,
license or agreement to which Purchaser is a party or by which it is bound, (c) violate any
judgment, order, ruling, or regulation applicable to Purchaser as a party in interest, or (d)
violate any Law applicable to Purchaser or any of its assets, except any matters described in
clauses (b), (c) or (d) above which would not have a material adverse effect on Purchaser’s ability
to consummate the transactions contemplated hereby.

     Section 5.5 Liability for Brokers’ Fees. Seller shall not directly or indirectly have any responsibility, liability or expense, as a
result of undertakings or agreements of Purchaser or its Affiliates, for brokerage fees, finder’s
fees, agent’s commissions or other similar forms of compensation to an intermediary in connection
with the negotiation, execution or delivery of this Agreement or any agreement or transaction
contemplated hereby.

     Section 5.6 Consents, Approvals or Waivers. Neither the execution and delivery of this Agreement (nor any documents required to be executed
by Purchaser at Closing), nor the consummation of the transactions contemplated hereby and thereby,
nor the compliance with the terms hereof and thereof (in each case, by Purchaser), will (a) be
subject to obtaining any consent, approval, or waiver from any Governmental Authority or other
third Person, or (b) except as would not, individually or in the aggregate, have a material adverse
effect on Purchaser’s ability to consummate the transactions contemplated hereby, violate any
applicable Law binding upon Purchaser.

     Section 5.7 Litigation. Except for the Party Lawsuit, there are no actions, suits or proceedings pending, or to
Purchaser’s knowledge, threatened in writing by or before any Governmental Authority or arbitrator
against Purchaser which are reasonably likely to impair Purchaser’s ability to consummate the
transactions contemplated hereby.

     Section 5.8 Financing. Purchaser has sufficient cash, available lines of credit or other sources of immediately
available funds (in United States dollars) to enable it to pay the Closing Payment to Seller at the
Closing.

     Section 5.9 Qualification. Purchaser is, or as of the Closing will be, qualified under applicable Laws to receive the
assignment of the Assets.

     Section 5.10 No Top Leases. Since 1972, none of Purchaser, its Affiliates, or any of its or their predecessors in interest
under the Original Lease has previously granted any rights to explore for and develop Hydrocarbons
that are exclusively granted to Seller as lessee under the New Lease, except such rights granted to
Seller, its Affiliates or any of its or their predecessors in interest pursuant to the Original
Lease or under the Exploration Agreement.

     Section 5.11 Independent Investigation. Subject to Seller’s representations and warranties set forth in Article 3 and Article 4 hereof
(or in any certificate furnished or to be furnished to Purchaser pursuant to this Agreement) and in
the Conveyance, Purchaser acknowledges and affirms that it has made (or will make prior to Closing)
all such reviews and inspections of the Assets as Purchaser has deemed necessary or appropriate.
Except for the representations and warranties expressly made by Seller in Article 3 and Article 4
of this Agreement (or in any certificate furnished or to be furnished to Purchaser pursuant to this

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Agreement) and in the Conveyance, Purchaser acknowledges that there are no representations or
warranties, express or implied, as to the Assets or prospects thereof, and that in making its
decision to enter into this Agreement and to consummate the transactions contemplated hereby,
Purchaser has relied solely upon its own independent investigation, verification, analysis and
evaluation.

     Section 5.12 Seller Information. To the knowledge of the officers of Purchaser, as of the execution date of this Agreement,
Seller has complied in all material respects with Purchaser’s requests for supporting documentation
and information relating to the transactions contemplated by this Agreement.

ARTICLE 6

COVENANTS OF THE PARTIES

     Section 6.1 Access. Seller will give Purchaser and its representatives access to the Assets and access to and the
right to copy, at Purchaser’s expense, the Records in Seller’s possession, for the purpose of
conducting an investigation of the Assets, but only to the extent that Seller may do so without
violating any obligations to any third Person; provided that Seller shall use its commercially
reasonable efforts to obtain all consents and waivers from such third Persons if necessary to
permit Purchaser’s access to the Assets and Records. Such access by Purchaser shall be limited to
Seller’s normal business hours, and Purchaser’s investigation shall be conducted in a manner that
minimizes interference with the operation of the Assets. Purchaser at its option may conduct a
Phase I environmental audit of any or all of the Assets, to the extent Seller has authority to
permit such an audit, provided that neither Purchaser nor its representatives shall conduct any
testing or sampling on or with respect to the Assets prior to Closing.

     Section 6.2 Indemnity Regarding Access. Purchaser agrees to indemnify, defend and hold harmless Seller, its Affiliates, the other owners
of interests in the Assets (other than Purchaser or its Affiliate), and all such Persons’
directors, officers, employees, agents and representatives from and against any and all Damages
directly attributable to access to the Assets prior to the Closing by Purchaser, its Affiliates, or
its or their directors, officers, employees, agents or representatives in connection with
Purchaser’s due diligence activities with respect to the transactions contemplated hereby, even if
caused in whole or in part by the negligence (whether sole, joint or concurrent), strict liability
or other legal fault of any Indemnified Person but excluding any Damages to the extent caused by
the gross negligence or willful misconduct of any Indemnified Person.

     Section 6.3 Pre-Closing Notifications. Until the Closing,

     (a) Purchaser shall notify Seller promptly after any officer of Purchaser obtains
actual knowledge that (i) any representation or warranty of Seller contained in this
Agreement is untrue in any material respect or will be untrue in any material respect as of
the Closing Date or (ii) any covenant or agreement to be performed or observed by Seller

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prior to or on the Closing Date has not been so performed or observed in any material
respect.

     (b) Seller shall notify Purchaser promptly after any officer of Seller obtains actual
knowledge that (i) any representation or warranty of Purchaser contained in this Agreement
is untrue in any material respect or will be untrue in any material respect as of
the Closing Date or (ii) any covenant or agreement to be performed or observed by
Purchaser prior to or on the Closing Date has not been so performed or observed in a
material respect.

If any of Purchaser’s or Seller’s representations or warranties is untrue or shall become untrue in
any material respect between the date of execution of this Agreement and the Closing Date, or if
any of Purchaser’s or Seller’s covenants or agreements to be performed or observed prior to or on
the Closing Date shall not have been so performed or observed in any material respect, but if such
breach of representation, warranty, covenant or agreement shall (if curable) be cured by the
Closing and the other Party has not terminated this Agreement pursuant to Section 9.1, then such
breach shall be considered not to have occurred for all purposes of this Agreement; provided that
any costs or expenses arising out of or relating to such cure shall be borne solely by the Party
who committed the breach (notwithstanding anything to the contrary herein, including the Purchase
Price adjustments set forth in Section 2.2).

     Section 6.4 Confidentiality; Public Announcements. Until the Closing, the Parties shall keep confidential and cause their Affiliates and their
respective officers, directors, employees and representatives to keep confidential all information
relating to this Agreement and the Assets, except as required by applicable Laws, administrative
process or the applicable rules of any stock exchange to which such Party or its Affiliates are
subject, and except for information which is available to the public on the date hereof or
thereafter becomes available to the public other than as a result of a breach of this Section 6.4
by such Party or any such other Person. Until the Closing, no Party shall make any press release
or other public announcement regarding the existence of this Agreement (or any documents
contemplated by this Agreement), the contents hereof or thereof or the transactions contemplated
hereby or thereby without the prior written consent of the other Party; provided, however, the
foregoing shall not restrict disclosures by Purchaser or Seller (a) that are mutually agreed to in
writing, (b) that are required by applicable securities or other Laws or the applicable rules of
any stock exchange having jurisdiction over the disclosing Party or its Affiliates, or (c) to
Governmental Authorities and third Persons holding Preferential Rights or Consents that may be
applicable to the transactions contemplated by this Agreement (or any documents contemplated by
this Agreement), as reasonably necessary to obtain waivers of such rights or such consents. The
Parties agree to negotiate a reasonable and customary post-Closing press release. Notwithstanding
the foregoing, at no time (before or after the Closing) shall either Party or its Affiliates
disclose the specific development plans for the properties included within the AMI except (i) with
the prior written consent of the other Party, (ii) to suppliers and other Persons bound by similar
confidentiality provisions as is reasonably necessary to conduct operations within the AMI, (iii)
that are required by applicable securities or other Laws or the applicable rules of any stock
exchange having jurisdiction over the disclosing Party or its Affiliates, (iv) as is reasonably
necessary to Governmental Authorities, (v) to prospective purchasers bound by similar
confidentiality

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provisions, (vi) to the disclosing Party’s Affiliates and such Party’s
representatives bound by similar confidentiality provisions, (vii) to the disclosing Party’s
lenders or financials advisors, or (viii) information which is available to the public on the date
hereof or thereafter becomes available to the public other than as a result of a breach of this
Section 6.4 by such Party or any such other Person; provided that the disclosing Party shall be
responsible for
any breach by the parties listed under subsections (ii), (v), (vi) or (vii) above of the
confidentiality provisions set forth in this sentence.

     Section 6.5 Governmental Reviews
.. Seller and Purchaser shall each in a timely manner (a) make all required filings, if any, and
prepare applications to and conduct negotiations, with each Governmental Authority as to which such
filings, applications or negotiations are necessary or appropriate in the consummation of the
transactions contemplated hereby, and (b) provide such information as the other may reasonably
request in order to make such filings, prepare such applications and conduct such negotiations.
Each Party shall cooperate with and use all reasonable efforts to assist the other with respect to
such filings, applications and negotiations.

     Section 6.6 Tax Matters. The provisions of this Section 6.6 shall apply to all Taxes except to the extent that Production
Taxes are dealt with in Section 1.5.

     (a) Effective Time for Tax Purposes. Notwithstanding any other provision of
this Agreement, the Parties shall treat the sale of the Assets hereunder as occurring as of
the Closing for all Tax purposes.

     (b) Transfer Taxes. Seller and Purchaser shall each pay any Transfer Taxes
imposed on it by Law as a result of the transactions contemplated by this Agreement, but,
notwithstanding such requirement at Law, each of Seller and Purchaser shall bear one-half of
the total of all such Transfer Taxes. Accordingly, if either Party is required at Law to
pay more than its one-half of any such Transfer Taxes, the other Party shall promptly
reimburse such first Party for amounts in excess of such one-half. Seller and Purchaser
shall timely file their own Transfer Tax returns as required by Law and shall notify the
other Party when such filings have been made. Seller and Purchaser shall cooperate and
consult with each other prior to filing such Transfer Tax returns to ensure that all such
returns are filed in a consistent manner.

     (c) Preparation of Tax Returns. With respect to any Tax Return covering a
taxable period ending on or before the Closing Date (a “Pre-Closing Taxable Period”) that is
required to be filed after the Closing Date with respect to the Assets, Seller shall cause
such Tax Return to be prepared (in a manner consistent with practices followed in prior
taxable periods except as required by a change in Law or fact) and shall cause such Tax
Return to be executed and duly and timely filed with the appropriate Governmental Authority
and shall pay all Taxes shown as due on such Tax Return. With respect to any Tax Return
covering a taxable period beginning on or before the Closing Date and ending after the
Closing Date (a “Straddle Taxable Period”) that is required to be filed after the Closing
Date with respect to the Assets, Purchaser shall cause such Tax Return to be prepared (in a
manner consistent with practices followed in prior taxable periods except

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as required by a
change in Law or fact) and shall cause such Tax Return to be executed and duly and timely
filed with the appropriate Governmental Authority and, subject to Seller’s payment to
Purchaser of a portion of such Tax pursuant to Section 6.6(d), shall pay all Taxes shown as
due on such Tax Return.

     (d) Liability for Taxes. Seller shall be responsible for and indemnify
Purchaser against, and Seller shall be entitled to all refunds or credits of, any Tax with
respect to the Assets that is attributable to a Pre-Closing Taxable Period or to that
portion of a Straddle Taxable Period that ends on the Closing Date. With respect to a
Straddle Taxable Period, Purchaser and Seller shall determine the Tax attributable to the
portion of the Straddle Taxable Period that ends on the Closing Date by an interim closing
of the books with respect to the Assets as of the Closing Date, except for ad valorem Taxes
which shall be prorated on a daily basis to the Closing Date, and Seller shall pay to
Purchaser an amount equal to the Tax so determined to be attributable to that portion of a
Straddle Taxable Period that ends on the Closing Date within five (5) days prior to the due
date for the payment of such Tax, to the extent not previously paid by Seller. Purchaser
shall be responsible for and indemnify Seller against, and Purchaser shall be entitled to
all refunds and credits of, all Taxes with respect to the Assets that are attributable to
that portion of any Straddle Taxable Period beginning after the Closing Date.
Notwithstanding the foregoing, Seller shall be entitled to the general abatement of property
taxes issued by Dickenson County in the amount of one hundred thousand dollars (US$100,000)
per year for a period of five (5) years.

     (e) Tax Proceedings. With respect to any Tax for which Seller is responsible,
Seller shall have the right, at its sole cost and expense, to control (in the case of a
Pre-Closing Taxable Period) or participate in (in the case of a Straddle Taxable Period) the
prosecution, settlement or compromise of any proceeding involving such Tax, including the
determination of the value of property for purposes of real and personal property ad valorem
Taxes. Purchaser shall take such action in connection with any such proceeding as Seller
shall reasonably request from time to time to implement the preceding sentence, including
the execution of powers of attorney. Notwithstanding the foregoing, neither Seller nor
Purchaser shall settle any proceeding with respect to any issue that could adversely affect
the other Party in a taxable period (or portion thereof) beginning after the Closing Date
without such other Party’s prior written consent, not to be unreasonably withheld,
conditioned or delayed. Purchaser shall give written notice to Seller of its receipt of any
notice of any audit, examination, claim or assessment for any Tax which could result in any
such proceeding within twenty (20) days after its receipt of such notice.

     (f) Assistance and Cooperation. Seller shall grant to Purchaser (or its
designees) access at all reasonable times to all of the information, books and records
relating to the Assets within the possession of Seller (including workpapers and
correspondence with Governmental Authorities), and shall afford Purchaser (or its designees)
the right (at Purchaser’s expense) to take extracts therefrom and to make copies thereof, to
the extent reasonably necessary to permit Purchaser (or its designees) to prepare Tax
Returns and to conduct negotiations with Governmental Authorities. Purchaser shall grant to
Seller (or its designees) access at all reasonable times to all of the information, books
and records relating to the Assets within the possession of Purchaser (including workpapers
and correspondence with Governmental Authorities), and shall afford Seller (or its
designees) the right (at Seller’s expense) to take extracts therefrom and to make copies
thereof, to the extent reasonably necessary to permit Seller (or

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its designees) to prepare
Tax Returns
and to conduct negotiations with Governmental Authorities. After the Closing Date,
Seller and Purchaser will preserve all information, records or documents relating to
liabilities for Taxes with respect to the Assets until six (6) months after the expiration
of any applicable statute of limitations (including extensions thereof) with respect to the
assessment of such Taxes.

     Section 6.7 Further Assurances. After Closing, Seller and Purchaser each agrees to take such further actions and to execute,
acknowledge and deliver all such further documents as are reasonably requested by the other Party
for carrying out the purposes of this Agreement, or of any document delivered pursuant to this
Agreement.

     Section 6.8 Assumption of Obligations. By the consummation of the transactions contemplated by this Agreement at Closing, and without
limiting the indemnification obligations of either Party under this Agreement, from and after
Closing, Purchaser agrees to assume and pay, perform and discharge all obligations of Seller
accruing under the Leases and Contracts with respect to the Assets.

     Section 6.9 Like-Kind Exchange. Seller may elect to structure this transaction as a like-kind exchange pursuant to section 1031
of the Code, and the regulations promulgated thereunder, with respect to any or all of the Assets
(a “Like-Kind Exchange”) at any time prior to the date of Closing. In order to effect a Like-Kind
Exchange, Purchaser shall cooperate and do all acts as may be reasonably required or requested by
Seller with regard to effecting the Like-Kind Exchange, including, but not limited to, permitting
such Seller to assign its rights (but not its obligations) under this Agreement to a qualified
intermediary of Seller’s choice in accordance with Treasury Regulation §1.1031(k)-1(g)(4) or
executing additional escrow instructions, documents, agreements, or instruments to effect an
exchange; provided, however, (a) Purchaser shall incur no expense or liability in connection with
such Like-Kind Exchange, (b) Purchaser shall not be required to take title to any asset other than
the Assets in connection with the Like-Kind Exchange, (c) Seller’s liability hereunder (including
its indemnification obligations under Article 10) shall not be alleviated, amended or altered in
any manner as a result of any Like-Kind Exchange, and (d) Purchaser’s possession of the Assets will
not be delayed by reason of any Like-Kind Exchange.

     Section 6.10 Operation of Assets. Except as set forth on Schedule 6.10, until the Closing, Seller (a) will operate the Non-PM
Assets and its business with respect thereto in the ordinary course, (b) will not, without the
prior written consent of Purchaser, which consent shall not be unreasonably withheld, conditioned
or delayed, commit to any operation, or series of related operations with respect to the Assets,
requiring future capital expenditures by Purchaser as the owner of the Assets in excess of those
amounts reflected in the capital budget previously provided by Seller to Purchaser, or terminate,
materially amend, execute or extend any material Contracts affecting the Assets, (c) will maintain
insurance coverage on the Assets in the amounts

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and of the types presently in force, (d) will use
its commercially reasonable efforts to maintain in full force and effect all Leases included in the
Non-PM Assets, (e) will maintain all material Governmental
Permits affecting the Assets, (f) will not transfer, farmout, sell, hypothecate, encumber or
otherwise dispose of any Assets, except for (1) sales and dispositions of Hydrocarbon production in
the ordinary course of business consistent with past practices or (2) transfers, farmouts, sales,
or other similar dispositions of Assets, in one or more transactions, not exceeding Five Hundred
Thousand Dollars (US$500,000) of consideration (in any form), in the aggregate, and (g) will not
commit to do any of the foregoing. Purchaser’s approval of any action restricted by this Section
6.10 shall be considered granted within ten (10) days (unless a shorter time is reasonably required
by the circumstances and such shorter time is specified in Seller’s written notice) of Seller’s
written notice to Purchaser requesting such consent unless Purchaser notifies Seller to the
contrary in writing during that period. In the event of an emergency, Seller may take such action
as a prudent operator would take and shall notify Purchaser of such action promptly thereafter.
Purchaser acknowledges that Seller may own an undivided interest in certain Assets, and Purchaser
agrees that the acts or omissions of the other working interest owners who are not affiliated with
Seller shall not constitute a violation of the provisions of this Section 6.10 nor shall any action
required by a vote of working interest owners constitute such a violation so long as Seller has
voted its interest in a manner consistent with the provisions of this Section 6.10.

     Section 6.11 Financial Information. Seller shall use its commercially reasonable efforts to (a) assist Purchaser and
Purchaser’s accountants, at the sole cost and expense of Purchaser, in the preparation of either
(i) if relief is granted by the SEC, statements of revenues and direct operating expenses and all
notes thereto related to the Assets or (ii) if such relief is not granted by the SEC, the financial
statements required by the SEC (such financial statements set forth in the foregoing clauses (i)
and (ii), as applicable, the “Statements of Revenues and Expenses”) in each case of clauses (i) and
(ii), that will be required of Purchaser or any of its Affiliates in connection with reports,
registration statements and other filings to be made by Purchaser or any of its Affiliates related
to the transactions contemplated by this Agreement with the SEC pursuant to the Securities Act, or
the Exchange Act, in such form that such statements and the notes thereto can be audited, and (b)
cooperate with Purchaser to provide to Purchaser access to such financial information as is
reasonably related to the preparation of the Statements of Revenues and Expenses; provided that in
no event shall Seller be obligated to prepare or provide financial information, records or
financial statements other than those kept by it in its ordinary course of business.

     Section 6.12 No Merger of Interests.

     (a) The interests of Purchaser as lessee and lessor under the New Lease shall at all
times be separate and apart and shall in no event be merged, notwithstanding the fact that
the leased interest created thereby, or any interest therein, may be held directly or
indirectly by or for the account of the same Person who owns the fee mineral title to the
Hydrocarbons subject to the New Lease or any portion thereof; and no such merger shall occur
by the operation of law or otherwise unless and until all Persons directly holding any of
the interests of lessee and lessor thereunder join in the execution of a written instrument
effecting such merger of interests.

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     (b) The interests of Seller as lessee and lessor under the EPC Lease shall at all times
be separate and apart and shall in no event be merged, notwithstanding the fact that the
leased interest created thereby, or any interest therein, may be held directly or indirectly
by or for the account of the same Person who owns the fee mineral title to the Hydrocarbons
subject to the EPC Lease or any portion thereof; and no such merger shall occur by the
operation of law or otherwise unless and until all Persons directly holding any of the
interests of lessee and lessor thereunder join in the execution of a written instrument
effecting such merger of interests.

     (c) Upon a determination by a court of competent jurisdiction that any of Section
6.12(a) of this Agreement, Section 6.12(b) of this Agreement, or Section 22(B) of the EPC
Lease, is invalid, illegal or incapable of being enforced, then (i) all other conditions and
provisions of this Agreement, the New Lease, and the EPC Lease shall nevertheless remain in
full force and effect, (iii) the Parties shall negotiate in good faith to modify this
Agreement, the New Lease and/or the EPC Lease to give effect to the original economic and
legal intent of the Parties as closely as possible in an acceptable manner to the end that
the intentions of the Parties as described in Sections 6.12(a) and 6.12(b) of this Agreement
and Section 22(B) of the EPC Lease are fulfilled to the extent possible, and (iii) if the
Parties are unable to agree on such modifications to this Agreement, the New Lease and/or
the EPC Lease, and the economic or legal substance of the transactions contemplated by this
Agreement, the New Lease, and/or the EPC Lease is affected in any manner materially adverse
to either Party, then this Agreement, the New Lease and the EPC Lease shall be interpreted
to give effect to the original economic and legal intent of the Parties as closely as
possible in an acceptable manner to the end that the transactions contemplated by this
Agreement, the New Lease and the EPC Lease are fulfilled to the extent possible.

     (d) It is further agreed that, upon a determination by a court of competent
jurisdiction that Section 6.12(b) of this Agreement and/or Section 22(B) of the EPC Lease is
invalid, illegal or incapable of being enforced, and that as a result, no interest of the
lessee under the EPC Lease was conveyed to Purchaser pursuant to the Conveyance, such
occurrence shall not be a breach of Seller’s warranty of title made to Purchaser in such
Conveyance.

     Section 6.13 Waiver of Condition for Pittston Litigation.

     (a) On or before the date hereof, PMOG shall request that Pittston Coal Company
(“Pittston”) assign all of its claims against EPC raised or that could have been raised in
the Pittston Litigation (the “Pittston Claims”), and if such assignment is so made, PMOG
shall cause the Pittston Litigation to be dismissed with prejudice.

     (b) If Pittston does not assign the Pittston Claims to PMOG as contemplated by Section
6.13(a), then within eight (8) days of the execution hereof, PMOG shall (i) deliver to
Pittston a release of all claims by PMOG with respect to or otherwise relating
to the Pittston Claims and (ii) request Pittston to release EPC with respect to the
Pittston Claims and dismiss the Pittston Litigation with prejudice.

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     (c) Purchaser agrees that if the conditions set forth in Section 7.1(e)(ii) and Section
7.2(e)(ii) are not satisfied prior to Closing and if Seller desires to unconditionally waive
the satisfaction of its condition under Section 7.1(e)(ii), then Purchaser shall also
unconditionally waive the satisfaction of its condition under Section 7.2(e)(ii).

ARTICLE 7

CONDITIONS TO CLOSING

     Section 7.1 Conditions of Seller to Closing. The obligations of Seller to proceed to consummate the transactions contemplated by this
Agreement are subject, at the option of Seller, to the satisfaction on or prior to Closing of each
of the following conditions:

     (a) Representations. The representations and warranties of Purchaser set forth
in Article 5 shall be true and correct (disregarding any materiality qualifiers) as of the
date of this Agreement and as of the Closing Date as though made on and as of the Closing
Date (other than representations and warranties that refer to a specified date, which need
only be true and correct, disregarding any materiality qualifiers, on and as of such
specified date), except for such breaches, if any, that in the aggregate would not have a
Material Adverse Effect;

     (b) Performance. Purchaser shall have performed and observed, in all material
respects, all covenants and agreements to be performed or observed by it under this
Agreement prior to or on the Closing Date and all deliveries contemplated by Section 8.3
shall have been made (or Purchaser shall be ready, willing and able to immediately make such
deliveries);

     (c) Gathering System Transaction. The transactions contemplated by that certain
Contribution Agreement of even date herewith among Seller, Equitable Gathering Equity, LLC,
Purchaser and the Company (the “Contribution Agreement”) shall have closed (or Purchaser
shall be ready, willing and able to simultaneously close such transactions with the
transaction contemplated hereby);

     (d) No Action. On the Closing Date, no suit, action, or other proceeding
(excluding any such matter initiated by Seller or any of its Affiliates) shall be pending or
threatened before any Governmental Authority or body of competent jurisdiction seeking to
enjoin or restrain the consummation of the transactions contemplated by this Agreement or
recover substantial damages from Seller or any Affiliate of Seller resulting therefrom;

     (e) Litigation.

     (i) Seller and Purchaser shall have come to a mutually agreeable settlement of
all ongoing litigation and claims between Seller and Purchaser, or
their respective Affiliates in the action styled as Pine Mountain Oil &
Gas, Inc. v. Equitable Production Company, USDC WD Va, Abingdon Division, CA No.
1:05CV095 (including the related September 22, 2005 arbitration proceeding) (the
“Party Lawsuit”), and Seller shall have received a settlement agreement executed

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by Purchaser (on behalf of itself and its Affiliates) in substantially the form
attached hereto as Exhibit E; and

     (ii) Pittston and Seller shall have entered into a mutually agreeable
settlement of all ongoing litigation and claims between Seller and Pittston, or
their respective Affiliates, and Seller shall have received a mutual release
executed by Pittston (on behalf of itself and its Affiliates) in form and substance
reasonably satisfactory to Seller which shall include, without limitation, a
dismissal by Pittston and its Affiliates of all claims relating to Pittston Coal
Company v. Equitable Production Company, Henrico County Circuit Court, VA, CA
No. CL06-1454 removed to U.S. District Court, E.D. Virginia, CA No. 3:06CV494 (the
“Pittston Litigation”); and

     (f) Asserted Title Defects/Casualties. The sum of all Asserted Title Defect
Amounts for Asserted Title Defects properly reported under Section 3.4(a), plus the Damages
resulting from any casualty loss occurring on or after the Effective Time to all or any
portion of the Assets, shall be less than ten percent (10%) of the unadjusted Purchase
Price.

     Section 7.2 Conditions of Purchaser to Closing. The obligations of Purchaser to consummate the transactions contemplated by this Agreement are
subject, at the option of Purchaser, to the satisfaction on or prior to Closing of each of the
following conditions:

     (a) Representations. The representations and warranties of Seller set forth in
Article 4 shall be true and correct (disregarding any materiality qualifiers, including
Material Adverse Effect) as of the date of this Agreement and as of the Closing Date as
though made on and as of the Closing Date (other than representations and warranties that
refer to a specified date, which need only be true and correct, disregarding any materiality
qualifiers, including Material Adverse Effect, on and as of such specified date), except for
such breaches, if any, that in the aggregate would not have a Material Adverse Effect;

     (b) Performance. Seller shall have performed and observed, in all material
respects, all covenants and agreements to be performed or observed by it under this
Agreement prior to or on the Closing Date and all deliveries contemplated by Section 8.2
shall have been made (or Seller shall be ready, willing and able to immediately make such
deliveries);

     (c) Gathering System Transaction. The transactions contemplated by the
Contribution Agreement shall have closed (or Seller and its Affiliates shall be ready,
willing and able to simultaneously close such transactions with the transactions
contemplated hereby);

     (d) No Action. On the Closing Date, no suit, action, or other proceeding
(excluding any such matter initiated by Purchaser or any of its Affiliates) shall be pending
or threatened before any Governmental Authority or body of competent

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jurisdiction seeking to
enjoin or restrain the consummation of the transactions contemplated by this Agreement or
recover substantial damages from Purchaser or any Affiliate of Purchaser resulting
therefrom;

     (e) Litigation.

     (i) Seller and Purchaser shall have come to a mutually agreeable settlement of
all ongoing litigation and claims between Seller and Purchaser, or their respective
Affiliates in the action styled as Pine Mountain Oil & Gas, Inc. v. Equitable
Production Company, USDC WD Va, Abingdon Division, CA No. 1:05CV095 (including
the related September 22, 2005 arbitration proceeding), and Purchaser shall have
received a settlement agreement executed by Seller (on behalf of itself and its
Affiliates) in substantially the form attached hereto as Exhibit E; and

     (ii) Pittston and Seller shall have entered into a mutually agreeable
settlement of all ongoing litigation and claims between Seller and Pittston, or
their respective Affiliates, and Seller shall have received a mutual release
executed by Pittston (on behalf of itself and its Affiliates) in form and substance
reasonably satisfactory to Seller which shall include, without limitation, a
dismissal by Pittston and its Affiliates of all claims relating to the Pittston
Litigation; and

     (f) Asserted Title Defects/Casualties. The sum of all Asserted Title Defect
Amounts for Asserted Title Defects properly reported under Section 3.4(a), plus the Damages
resulting from any casualty loss occurring on or after the date Effective Time to all or any
portion of the Assets, shall be less than ten percent (10%) of the unadjusted Purchase
Price.

ARTICLE 8

CLOSING

     Section 8.1 Time and Place of Closing. The consummation of the purchase and sale of the Assets as contemplated by this Agreement (the
“Closing”) shall, (i) unless otherwise agreed to in writing by Purchaser and Seller or otherwise
provided in this Agreement, take place at the offices of Seller located at 225 North Shore Drive,
Pittsburgh, Pennsylvania 15212, at 10:00 a.m., local time, on May 4, 2007, (ii) if all conditions
in Article 7 to be satisfied prior to Closing have not yet been satisfied or waived, as soon
thereafter as such conditions have been satisfied or waived, subject to the provisions of Article
9. For the avoidance of doubt, each Closing subsequent to the initial Closing pursuant to Section
3.4 or Section 3.5 shall constitute a Closing for purposes of this Agreement and, as such,
the conditions to Closing set forth in Section 7.1 and Section 7.2, the actions required at Closing
by Section 8.2 and Section 8.3, and the adjustments required by Section 2.2 and Section 8.4 shall
apply with respect to each such Closing. The date on which a Closing occurs is referred to herein
as the “Closing Date.”

     Section 8.2 Closing Deliveries of Seller. At the Closing, upon the terms and subject to the conditions of this Agreement, and subject to
the simultaneous performance by Purchaser of

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its obligations pursuant to Section 8.3, Seller shall
deliver or cause to be delivered to Purchaser, among other things, the following:

     (a) Duly executed conveyances of the Combined Assets in substantially the form attached
hereto as Exhibit B (the “Conveyance”), in sufficient duplicate originals to allow recording
in all appropriate jurisdictions and offices;

     (b) A certificate duly executed by an authorized corporate officer of Seller, dated as
of the Closing, certifying on behalf of Seller that the conditions set forth in Section
7.1(a) and Section 7.1(b) have been fulfilled;

     (c) A certification of non-foreign status in the form prescribed by U.S. Treasury
Regulation § 1.1445-2(b)(2) with respect to Seller;

     (d) The New Lease duly executed by an authorized corporate officer of Seller, dated as
of the Closing;

     (e) An operating agreement duly executed by an authorized corporate officer of Seller,
dated as of the Closing, in substantially the form attached hereto as Exhibit D (the
“Operating Agreement”);

     (f) The settlement agreement specified in Section 7.2(e);

     (g) A termination agreement duly executed by an authorized corporate officer of Seller,
dated as of the Closing, in substantially the form attached hereto as Exhibit F (the
“Termination Agreement”);

     (h) A guaranty agreement duly executed by an authorized corporate officer of EQT
Investments, LLC, dated as of the Closing, in substantially the form attached hereto as
Exhibit H; and

     (i) The EPC Lease duly executed by an authorized corporate officer of Seller, dated as
of the Closing.

     Section 8.3 Closing Deliveries of Purchaser. At the Closing, upon the terms and subject to the conditions of this Agreement, and subject to
the simultaneous performance by Seller of its obligations pursuant to Section 8.2, Purchaser shall
deliver or cause to be delivered to Seller, among other things, the following:

     (a) A wire transfer of the Closing Payment in same-day funds;

     (b) A certificate duly executed by an authorized corporate officer of Purchaser, dated
as of the Closing, certifying on behalf of Purchaser that the conditions set forth in
Section 7.2(a) and Section 7.2(b) have been fulfilled;

     (c) The New Lease duly executed by an authorized corporate officer of Purchaser, dated
as of the Closing;

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     (d) The Operating Agreement duly executed by an authorized corporate officer of
Purchaser, dated as of the Closing;

     (e) The settlement agreement specified in Section 7.1(e);

     (f) The Termination Agreement duly executed by an authorized corporate officer of
Purchaser, dated as of the Closing; and

     (g) A guaranty agreement duly executed by an authorized corporate officer of Range
Resources Corporation, dated as of the Closing, in substantially the form attached hereto as
Exhibit I.

     Section 8.4 Closing Payment and Post-Closing Purchase Price Adjustments.

     (a) Not later than five (5) Business Days prior to the Closing Date, Seller shall
prepare in good faith and deliver to Purchaser, using and based upon the best information
available to Seller, a preliminary settlement statement estimating the Adjusted Purchase
Price after giving effect to all Purchase Price adjustments set forth in Section 2.2
(together with all reasonable back-up and support information for such statement) and
providing the account information for the account into which the Closing Payment is to be
deposited by Purchaser. Purchaser shall review such preliminary settlement statement and
discuss with Seller any changes necessary thereto. The Parties shall use their reasonable
efforts exercised in good faith to agree upon such preliminary settlement statement as of
Closing. The estimate set forth in the preliminary settlement statement mutually agreed to
by the Parties in accordance with this Section 8.4(a) shall constitute the dollar amount to
be paid by Purchaser to Seller at the Closing (the “Closing Payment”).

     (b) As soon as reasonably practicable after the Closing but not later than the one
hundred and twentieth (120th) day following the Closing Date, Seller shall
prepare in good faith and deliver to Purchaser a statement setting forth the final
calculation of the Adjusted Purchase Price and showing the calculation of each adjustment,
based, to the extent possible on actual credits, charges, receipts and other items
attributable to the period of time from and after the Effective Time (together with
reasonable back-up and support information for such statement). As soon as reasonably
practicable but not later than the thirtieth (30th) day following receipt of
Seller’s statement hereunder, Purchaser shall deliver to Seller a written report containing
any changes that Purchaser proposes be made to such statement. The Parties shall undertake
to agree on the final statement of the Adjusted Purchase Price no later than one hundred and
eighty (180) days after the
Closing Date. In the event that the Parties cannot reach agreement within such period
of time, either Party may refer the remaining matters in dispute to Ernst & Young LLP, or if
Ernst & Young LLP is unable or unwilling to perform under this Section 8.4(b), such other
nationally-recognized independent accounting firm as may be accepted by Purchaser and
Seller, for review and final determination. The accounting firm shall conduct the
arbitration proceedings in Pittsburgh, Pennsylvania in accordance with the Commercial
Arbitration Rules of the American Arbitration Association in effect as of the

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date hereof,
to the extent such rules do not conflict with the terms of this Section 8.4(b). The
accounting firm’s determination shall be made within thirty (30) days after submission of
the matters in dispute and shall be final and binding on both Parties, without right of
appeal. In determining the proper amount of any adjustment to the Purchase Price, the
accounting firm shall not increase the Purchase Price more than the increase proposed by
Seller nor decrease the Purchase Price more than the decrease proposed by Purchaser, as
applicable. The accounting firm shall act as an expert for the limited purpose of
determining the specific disputed matters submitted by either Party and may not award
damages or penalties to either Party with respect to any matter. Seller and Purchaser shall
each bear its own legal fees and other costs of presenting its case. Each Party shall bear
one-half of the costs and expenses of the accounting firm. Within ten (10) days after the
earlier of (i) the expiration of Purchaser’s thirty (30) day review period without delivery
of any written report or (ii) the date on which the Parties or the accounting firm, as
applicable, finally determine the Adjusted Purchase Price, (x) Purchaser shall pay to Seller
the amount by which the Adjusted Purchase Price exceeds the Closing Payment or (y) Seller
shall pay to Purchaser the amount by which the Closing Payment exceeds the Adjusted Purchase
Price, as applicable. Any post-Closing payment pursuant to this Section 8.4 shall bear
interest from the Closing Date to the date of payment at the Agreed Interest Rate.

ARTICLE 9

TERMINATION AND AMENDMENT

     Section 9.1 Termination. This Agreement may be terminated at any time prior to Closing: (i) by the mutual prior written
consent of Seller and Purchaser; (ii) by either Purchaser or Seller, if the Closing has not
occurred on or before sixty (60) days after the date hereof (the “Termination Date”); provided,
however, that the right to terminate this Agreement under this Section 9.1 shall not be available
(A) to Seller, if any breach of this Agreement by Seller has been the principal cause of, or
resulted in, the failure of the Closing to occur on or before the Termination Date or (B) to
Purchaser, if any breach of this Agreement by Purchaser has been the principal cause of, or
resulted in, the failure of the Closing to occur on or before the Termination Date; (iii) by
Seller, if (A) any of the representations and warranties of Purchaser contained in this Agreement
shall not be true and correct in all material respects (provided that any such representation or
warranty that is already qualified by a materiality standard or a material adverse effect
qualification shall not be further qualified); or (B) Purchaser shall have failed to fulfill in any
material respect any of its obligations under this Agreement; and, in the case of each of clauses
(A) and (B) of this subsection (iii), Seller shall have given Purchaser written notice of such
misrepresentation,
breach of warranty or failure, if curable, and such misrepresentation, breach of warranty or
failure has not been cured by the Termination Date; or (iv) by Purchaser, if (A) any of the
representations and warranties of Seller contained in this Agreement shall not be true and correct
in all material respects (provided that any such representation or warranty that is already
qualified by a materiality or Material Adverse Effect qualification shall not be further
qualified); or (B) Seller shall have failed to fulfill in any material respect any of its
obligations under this Agreement, and, in the case of each of clauses (A) and (B) of this
subsection (iv), Purchaser shall have given Seller written notice of such misrepresentation, breach
of warranty or

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failure, if curable, and such misrepresentation, breach of warranty or failure has
not been cured by the Termination Date.

     Section 9.2 Effect of Termination. If this Agreement is terminated pursuant to Section 9.1, this Agreement shall become void and of
no further force or effect except for the provisions of Section 4.3, Section 5.5, Section 6.2,
Section 6.4 (other than the last sentence thereof), Section 11.8, Section 11.17, Section 11.18 and
Section 11.19, which shall continue in full force and effect. Notwithstanding anything to the
contrary in this Agreement, the termination of this Agreement under Section 9.1 shall not relieve
any Party from liability for Damages resulting from any willful or negligent breach by such Party
of this Agreement in any material respect.

ARTICLE 10

INDEMNIFICATIONS; LIMITATIONS

     Section 10.1 Indemnification.

     (a) From and after Closing, Purchaser shall indemnify, defend, and hold harmless the
Seller Indemnified Persons from and against all Damages incurred or suffered by any Seller
Indemnified Person:

     (i) caused by, arising out of or resulting from the ownership, use or operation
of the Assets from and after the Closing,

     (ii) caused by, arising out of or resulting from Purchaser’s breach of any of
Purchaser’s covenants or agreements contained in Article 6, or

     (iii) caused by, arising out of or resulting from any breach of any
representation or warranty made by Purchaser contained in Article 5 of this
Agreement or in the certificate delivered by Purchaser at Closing pursuant to
Section 8.3(b),

except to the extent such Damages are caused in whole or in part by the negligence (whether
sole, joint, or concurrent), strict liability, or other legal fault of any Indemnified
Person, and excepting in each case Damages against which Seller would be required to
indemnify Purchaser under Section 10.1(b) at the time the Claim Notice is
presented by Purchaser. The term “Seller Indemnified Persons” as used herein means Seller
and its Affiliates and their respective directors, officers, employees, stockholders,
members, agents, consultants, advisors and other representatives (including legal counsel,
accountants and financial advisors).

     (b) From and after Closing, Seller shall indemnify, defend, and hold harmless the
Purchaser Indemnified Persons against and from all Damages incurred or suffered by any
Purchaser Indemnified Person:

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     (i) caused by, arising out of or resulting from the ownership, use or operation
of the Asset before the Closing,

     (ii) caused by, arising out of or resulting from Seller’s breach of any of
Seller’s covenants or agreements contained in Article 6,

     (iii) caused by, arising out of or resulting from any breach of any
representation or warranty made by Seller contained in Article 4 of this Agreement
or in the certificate delivered by Seller at Closing pursuant to Section 8.2(b),

     (iv) caused by, arising out of or resulting from the claims, suits, proceedings
and actions described in Schedule 4.5A hereto; or

     (v) caused by, arising out of or resulting from the Excluded Assets,

except to the extent such Damages are caused in whole or in part by the negligence (whether
sole, joint, or concurrent), strict liability, or other legal fault of any Indemnified
Person. Notwithstanding the foregoing, Seller shall not be required under this Section
10.1(b) to indemnify, defend or hold harmless the Purchaser Indemnified Person from Property
Costs and Gathering Charges accruing from and after the Effective Time and attributable to
the Assets. The term “Purchaser Indemnified Persons” as used herein means Purchaser and its
Affiliates and their respective directors, officers, employees, stockholders, members,
agents, consultants, advisors and other representatives (including legal counsel,
accountants and financial advisors). Notwithstanding anything to the contrary contained
herein, Purchaser’s rights to indemnification shall be limited to the Assets conveyed to
Purchaser at the Closing, and shall not extend to any Pre-Effective Time Interests owned by
Purchaser prior to the Closing.

     (c) Notwithstanding anything to the contrary contained in this Agreement, from and
after Closing, this Section 10.1 contains the Parties’ exclusive remedy against each other
with respect to breaches of the representations, warranties, covenants and agreements of the
Parties contained in Article 4, Article 5 and Article 6 (excluding Section 6.2, which shall
be separately enforceable by the injured Party pursuant to whatever rights and remedies are
available to it outside of this Article 10) and the affirmations of such representations,
warranties, covenants and agreements contained in the certificate delivered by each Party at
Closing pursuant to Section 8.2(b) or Section
8.3(b), as applicable. Except for (i) the remedies contained in this Section 10.1,
(ii) any other remedies available to the Parties at Law or in equity for breaches of
provisions of this Agreement other than Article 4, Article 5 and Article 6 (excluding
Section 6.2), and (iii) the remedies available at Law or in equity in connection with any
other document delivered by a Party in connection with the consummation of the transactions
contemplated hereby, from and after Closing, Seller and Purchaser each releases, remises,
and forever discharges the other and its Affiliates and all such Persons’ stockholders,
officers, directors, employees, agents, advisors and representatives from any and all suits,

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legal or administrative proceedings, claims, demands, damages, losses, costs, liabilities,
interest, or causes of action whatsoever, in Law or in equity, known or unknown, which such
Parties might now or subsequently may have, based on, relating to or arising out of this
Agreement or the consummation of the transactions contemplated hereby, except to the extent
caused in whole or in part by the negligence (whether sole, joint, or concurrent), strict
liability, or other legal fault of any released Person.

     (d) “Damages” shall mean the amount of any actual liability, loss, cost, expense,
claim, award, or judgment incurred or suffered by any Indemnified Person arising out of or
resulting from the indemnified matter, whether attributable to personal injury or death,
property damage, contract claims, torts or otherwise including reasonable fees and expenses
of attorneys, consultants, accountants, or other agents and experts reasonably incident to
matters indemnified against, and the costs of investigation and/or monitoring of such
matters, and the costs of enforcement of the indemnity; provided, however, that Purchaser
and Seller shall not be entitled to indemnification under this Agreement for, and “Damages”
shall not include (except to the extent that such Damages are awarded to an unaffiliated
third Person ) (i) loss of profits or other consequential damages suffered by the Party
claiming indemnification, or any punitive damages or (ii) in the event the Indemnified
Person takes any action that exceeds the scope of the operating authority granted to it
under the Operating Agreement, any liability, loss, cost, expense, claim, award or judgment
to the extent and only to the extent increased by such action.

     (e) The indemnity to which each Party is entitled under this Agreement shall be for the
benefit of and extend to the Indemnified Persons affiliated with such Party as described
above in this Section 10.1. Any claim for indemnity under this Agreement by any such
Indemnified Person other than a Party must be brought and administered by the applicable
Party to this Agreement. No Indemnified Person other than Seller and Purchaser shall have
any rights against either Seller or Purchaser under the terms of this Section 10.1 or
otherwise under this Agreement, except as may be exercised on its behalf by Purchaser or
Seller, as applicable, pursuant to this Section 10.1(e). Each of Seller and Purchaser may
elect to exercise or not exercise indemnification rights under this Agreement on behalf of
the other Indemnified Persons affiliated with it in its sole discretion and shall have no
liability to any such other Indemnified Person for any action or inaction under this
Agreement.

     (f) For the sole purposes of the indemnities set forth in this Section 10.1, in
determining a breach or inaccuracy of any Party’s representations or warranties and in
calculating the amount of Damages incurred, arising out of or relating to any such breach
or inaccuracy of a representation or warranty, any references to “Material Adverse
Effect” or other materiality qualifications (or correlative terms) shall be disregarded.

     Section 10.2 Indemnification Actions. All claims for indemnification under Section 10.1 shall be asserted and resolved as follows:

     (a) For purposes of this Agreement, the term “Indemnifying Person” when used in
connection with particular Damages shall mean the Person having an obligation to

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indemnify
another Person or Persons with respect to such Damages pursuant to this Agreement, and the
term “Indemnified Person” when used in connection with particular Damages shall mean a
Person having the right to be indemnified with respect to such Damages pursuant to this
Agreement.

     (b) To make claim for indemnification under Section 10.1, an Indemnified Person shall
notify the Indemnifying Person of its claim, including the specific details of and specific
basis under this Agreement for its claim (the “Claim Notice”). In the event that the claim
for indemnification is based upon a claim by a third Person against the Indemnified Person
(a “Claim”), the Indemnified Person shall provide its Claim Notice promptly after the
Indemnified Person has actual knowledge of the Claim and shall enclose a copy of all papers
(if any) served with respect to the Claim; provided that the failure of any Indemnified
Person to give notice of a Claim as provided in this Section 10.2 shall not relieve the
Indemnifying Person of its obligations under Section 10.1 except to the extent (and only to
the extent of such incremental Damages incurred) such failure results in insufficient time
being available to permit the Indemnifying Person to effectively defend against the Claim or
otherwise prejudices the Indemnifying Person’s ability to defend against the Claim. In the
event that the claim for indemnification is based upon an inaccuracy or breach of a
representation, warranty, covenant, or agreement, the Claim Notice shall specify the
representation, warranty, covenant, or agreement that was inaccurate or breached.

     (c) In the case of a claim for indemnification based upon a Claim, the Indemnifying
Person shall have thirty (30) days from its receipt of the Claim Notice to notify the
Indemnified Person whether or not it agrees to indemnify and defend the Indemnified Person
against such Claim under this Article 10. The Indemnified Person is authorized, prior to
and during such thirty (30) day period, to file any motion, answer, or other pleading that
it shall deem necessary or appropriate to protect its interests or those of the Indemnifying
Person and that is not prejudicial to the Indemnifying Person.

     (d) If the Indemnifying Person agrees to indemnify the Indemnified Person, it shall
have the right and obligation to diligently defend, at its sole cost and expense, the Claim.
The Indemnifying Person shall have full control of such defense and proceedings, including
any compromise or settlement thereof. If requested by the Indemnifying Person, the
Indemnified Person agrees to cooperate in contesting any Claim, which the Indemnifying
Person elects to contest (provided, however, that the Indemnified Person shall not be
required to bring any counterclaim or cross-complaint against any Person). The Indemnified
Person may participate in, but not control, at its sole cost and expense,
any defense or settlement of any Claim controlled by the Indemnifying Person pursuant
to this Section 10.2(d). An Indemnifying Person shall not, without the written consent of
the Indemnified Person, such consent not to be unreasonably withheld, conditioned or
delayed, settle any Claim or consent to the entry of any judgment with respect thereto that
(i) does not result in a final resolution of the Indemnified Person’s liability with respect
to the Claim (including, in the case of a settlement, an unconditional written release of
the Indemnified Person from all liability in respect of such Claim) or (ii) may materially
and

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adversely affect the Indemnified Person (other than as a result of money damages covered
by the indemnity).

     (e) If the Indemnifying Person does not agree to indemnify the Indemnified Person
within the thirty (30) day period specified in Section 10.2(c), fails to give notice to the
Indemnified Party within such thirty (30) day period regarding its election, or if the
Indemnifying Party agrees to indemnify, but fails to diligently defend or settle the Claim,
then the Indemnified Person shall have the right to defend against the Claim (at the sole
cost and expense of the Indemnifying Person, if the Indemnified Person is entitled to
indemnification hereunder), with counsel of the Indemnified Person’s choosing; provided,
however, that the Indemnified Party shall make no settlement, compromise, admission, or
acknowledgment that would give rise to liability on the part of any Indemnifying Party
without the prior written consent of such Indemnifying Party, which consent shall not be
unreasonably withheld, conditioned or delayed.

     (f) In the case of a claim for indemnification not based upon a Claim, the Indemnifying
Person shall have thirty (30) days from its receipt of the Claim Notice to (i) cure the
Damages complained of, (ii) agree to indemnify the Indemnified Person for such Damages, or
(iii) dispute the claim for such Damages. If such Indemnifying Person does not respond to
such Claim Notice within such thirty (30) day period, such Person will be deemed to dispute
the claim for Damages.

     Section 10.3 Limitation on Actions.

     (a) The representations and warranties of the Parties in Article 4 and Article 5 and
the covenants and agreements of the Parties in Article 6, and the corresponding
representations and warranties given in the certificates delivered at the Closing pursuant
to Section 8.2(b) and Section 8.3(b), as applicable, shall survive the Closing for a period
of one (1) year, except that (i) with respect to any taxable period, the representations,
warranties, covenants and agreements contained in Section 4.6 and Section 6.6 shall survive
the Closing until the applicable statute of limitations closes such taxable period, (ii) the
provisions of Section 5.10 shall survive the Closing for a period of five (5) years, (iii)
the provisions of Section 1.8 shall survive the Closing for the term of the Operating
Agreement, and (iv) the provisions of Section 4.3, Section 5.5, the last sentence in Section
6.4, and Section 6.12 shall survive without time limit. The remainder of this Agreement
shall survive the Closing without time limit except as provided in Section 10.3(b) below.
Representations, warranties, covenants, and agreements shall be of no further force and
effect after the date of their expiration (if any), provided that there shall
be no termination of any bona fide claim asserted pursuant to this Agreement with
respect to such a representation, warranty, covenant, or agreement prior to its expiration
date.

     (b) The indemnities in Section 10.1(a)(ii), Section 10.1(a)(iii), Section 10.1(b)(ii)
and Section 10.1(b)(iii) shall terminate as of the termination date of each respective
representation, warranty, covenant or agreement that is subject to indemnification, except
(in each case) as to matters for which a specific written claim for indemnity has been
delivered to the Indemnifying Person on or before such termination date. The

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indemnities in
Section 10.1(a)(i) and Section 10.1(b)(i) shall terminate on the date which is three (3)
years from the Closing Date except (in each case) as to matters for which a specific written
claim for indemnity has been delivered to the Indemnifying Person on or before such
termination date.

     (c) Except for claims relating to a breach of a Party’s obligations under Section 4.3,
Section 4.6, Section 5.5, Section 6.6, no individual claim of an Indemnified Person may be
made against any Party for any Damages under Section 10.1(b) or unless such Damages exceed
an amount equal to Fifty Thousand Dollars (US$50,000). Furthermore, except for claims
relating to a breach of Seller’s obligations under Section 4.3, Section 4.6, Section 5.5,
the last sentence of Section 6.4, Section 6.6, Section 10.1(b)(iv) and Section 10.1(b)(v),
Seller shall not have any liability for any indemnification under Section 10.1(b) until and
unless the aggregate amount of the liability for all Damages for which Claim Notices are
delivered by Purchaser exceeds Two Million Six Hundred Twenty Thousand Dollars
(US$2,620,000.00), then only to the extent such Damages exceed Two Million Six Hundred
Twenty Thousand Dollars (US$2,620,000.00). The adjustments to the Purchase Price under
Section 2.2, any further adjustments with respect to production, income, proceeds, receipts
and credits under Section 11.1, any future adjustments with respect to Property Costs under
Section 11.2 and any payments in respect of any of the preceding, as well as any Damages
arising out of a breach by a Party of any other provision of this Agreement (excluding the
provisions of Article 4, Article 5 and Article 6), shall not be limited by this Section.

     (d) Notwithstanding anything to the contrary contained elsewhere in this Agreement,
Seller shall not be required to indemnify Purchaser under this Article 10 (excluding Section
10.1(b)(iv) and Section 10.1(b)(v)) for aggregate Damages in excess of fifteen percent (15%)
of the unadjusted Purchase Price.

     (e) The amount of any Damages for which an Indemnified Person is entitled to indemnity
under this Article 10 shall be reduced by the amount of insurance proceeds actually realized
and received by the Indemnified Person or its Affiliates with respect to such Damages (net
of any collection costs, and excluding the proceeds of any insurance policy issued or
underwritten by the Indemnified Person or its Affiliates).

ARTICLE 11

MISCELLANEOUS

     Section 11.1 Receipts
.. Any production of Hydrocarbons from or attributable to the Assets (and all products and proceeds
attributable thereto) and any other income, proceeds, receipts and credits attributable to the
Assets which are not reflected in the adjustments to the Purchase Price following the final
adjustment pursuant to Section 8.4(b) shall be treated as follows: (a) all production of
Hydrocarbons from or attributable to the Assets (and all products and proceeds attributable
thereto) and all other income, proceeds, receipts and credits earned with respect to the Assets to
which Purchaser is entitled under Section 1.5 shall be the sole property and entitlement of
Purchaser, and, to the extent received by Seller, Seller shall fully disclose, account for and
remit the same promptly to Purchaser; and (b) all production of

-46-

 

Hydrocarbons from or attributable
to the Assets (and all products and proceeds attributable thereto) and all other income, proceeds,
receipts and credits earned with respect to the Assets to which Seller is entitled under Section
1.5 shall be the sole property and entitlement of Seller and, to the extent received by Purchaser,
Purchaser shall fully disclose, account for and remit the same promptly to Seller.

     Section 11.2 Property Costs and Gathering Charges. Any Property Costs and Gathering Charges which are not reflected in the adjustments to the
Purchase Price following the final adjustment pursuant to Section 8.4(b) shall be treated as
follows: (a) all Property Costs and gathering charges for which Seller is responsible under
Section 1.5 shall be the sole obligation of Seller and Seller shall promptly pay, or if paid by
Purchaser, promptly reimburse Purchaser for and hold Purchaser harmless from and against same; and
(b) all Property Costs and Gathering Charges for which Purchaser is responsible under Section 1.5
shall be the sole obligation of Purchaser and Purchaser shall promptly pay, or if paid by Seller,
promptly reimburse Seller for and hold Seller harmless from and against same.

     Section 11.3 Counterparts. This Agreement may be executed in counterparts, each of which shall be deemed an original
instrument, but all such counterparts together shall constitute but one agreement.

     Section 11.4 Notices. All notices that are required or may be given pursuant to this Agreement shall be sufficient in
all respects if given in writing and delivered personally, by facsimile or by recognized courier
service, as follows:

	 	 	 
	If to Seller:

	 	225 North Shore Drive
	 

	 	Pittsburgh, Pennsylvania 15212
	 

	 	Attention: Corporate Secretary
	 

	 	Telephone: (412)553-5700
	 

	 	Telecopy: (412)553-7781
	 
	 	 
	With a copy to:

	 	Baker Botts L.L.P.
	 

	 	1500 San Jacinto Center
	 

	 	98 San Jacinto Boulevard
	 

	 	Austin, Texas 78701
	 

	 	Attention: Michael Bengtson
	 

	 	Telephone: (512)322-2661
	 

	 	Telecopy: (512)322-8349
	 
	 	 
	If to Purchaser:

	 	777 Main Street, Suite 800
	 

	 	Fort Worth, Texas 76102
	 

	 	Attention: Chad Stephens
	 

	 	Telephone: (810) 817-1929
	 

	 	Telecopy: (810) 817-1990

-47-

 

	 	 	 
	With a copy to:

	 	125 State Route 43
	 

	 	P.O. Box 550
	 

	 	Hartville, OH 44632
	 

	 	Attention: Jeffery A. Bynum
	 

	 	Telephone: (330) 877-6747
	 

	 	Telecopy: (330) 877-6129

Either Party may change its address for notice by notice to the other Party in the manner set forth
above. All notices shall be deemed to have been duly given at the time of receipt by the Party to
which such notice is addressed if received during regular business hours on a Business Day or, if
not so received, on the next Business Day.

     Section 11.5 [Intentionally Omitted].

     Section 11.6  Expenses. All expenses incurred by Seller in connection with or related to the authorization, preparation
or execution of this Agreement, and the Exhibits and Schedules hereto and thereto, and all other
matters related to the Closing, including all fees and expenses of counsel, accountants and
financial advisers employed by Seller, shall be borne solely and entirely by Seller, and all such
expenses incurred by Purchaser shall be borne solely and entirely by Purchaser.

     Section 11.7  [Intentionally Omitted].

     Section 11.8  Governing Law; Jurisdiction; Court Proceedings. This Agreement and the legal relations between the Parties shall be governed by and construed in
accordance with the laws of the Commonwealth of Virginia without regard to principles of conflicts
of laws that would direct the application of the laws of another jurisdiction. Each of the Parties
agrees that it shall bring any action or proceeding in respect of any claim arising out of or
related to this Agreement or the transactions contemplated hereby exclusively in the Federal Court
for the Western District of Virginia (the “Chosen Court”) and, solely in connection with claims
arising under this Agreement or the transactions contemplated hereby, (i) irrevocably submits to
the exclusive jurisdiction of the Chosen Court, (ii) waives any objection to laying venue in any
such action or proceeding in the Chosen Court, and (iii) waives any objection that the Chosen Court
is an inconvenient forum or does not have jurisdiction over it. The foregoing
consents to jurisdiction shall not constitute general consents for any purpose except as provided
herein and shall not be deemed to confer rights on any Person other than the Parties.

     Section 11.9 Records. Seller shall provide access to Purchaser to such Records as Purchaser shall reasonably request
that are in the possession of Seller or its Affiliates, in order for Purchaser to make copies of
the same, provided that Seller shall be permitted to retain the originals of all such Records.

     Section 11.10 Captions. The captions in this Agreement are for convenience only and shall not be considered a part of or
affect the construction or interpretation of any provision of this Agreement.

     Section 11.11 Waivers. Any failure by any Party to comply with any of its obligations, agreements or conditions herein
contained may be waived by the Party to whom such

-48-

 

compliance is owed by an instrument signed by the
Party to whom compliance is owed and expressly identified as a waiver, but not in any other manner.
No waiver of, or consent to a change in, any of the provisions of this Agreement shall be deemed
or shall constitute a waiver of, or consent to a change in, other provisions hereof (whether or not
similar), nor shall such waiver constitute a continuing waiver unless otherwise expressly provided.

     Section 11.12 Assignment. No Party shall assign or otherwise transfer all or any part of this Agreement, except to a
wholly-owned Affiliate in a transfer whereby this Agreement remains binding upon the transferring
Party, nor shall any Party delegate any of its rights or duties hereunder, without the prior
written consent of the other Party and any transfer or delegation made without such consent shall
be void. Subject to the foregoing, this Agreement shall be binding upon and inure to the benefit
of the Parties hereto and their respective successors and assigns.

     Section 11.13 Entire Agreement. This Agreement, the Exhibits and Schedules attached hereto and the documents to be executed
hereunder or in connection with a condition to Closing, together with the Contribution Agreement,
the exhibits and schedules attached thereto and the documents to be executed thereunder or in
connection with a condition to the closing thereof (the “Transaction Documents”), shall constitute
the entire agreement between the Parties and their Affiliates pertaining to the subject matter of
the Transaction Documents, and supersede all prior agreements, understandings, negotiations and
discussions, whether oral or written, among the Parties and their Affiliates regarding such subject
matter, including that certain letter of intent, dated as of September 25, 2006, between Range
Resources Corporation and Equitable Resources, Inc. (the “Letter of Intent”). The Parties agree
that, effective as of the Execution Date, the Letter of Intent shall be of no further force and
effect.

     Section 11.14 Amendment. This Agreement may be amended or modified only by an agreement in writing signed by both Parties
and expressly identified as an amendment or modification.

     Section 11.15 No Third Person Beneficiaries. Nothing in this Agreement shall entitle any Person other than Purchaser and Seller to any claim,
cause of action, remedy or right of any kind, except the rights expressly provided to the Persons
described in Section 10.1(e).

     Section 11.16 References.

     In this Agreement:

     (a) References to any gender include a reference to all other genders;

     (b) References to the singular include the plural, and vice versa;

     (c) Reference to any Article or Section means an Article or Section of this Agreement;

     (d) Reference to any Exhibit or Schedule means an Exhibit or Schedule to this
Agreement, all of which are incorporated into and made a part of this Agreement;

-49-

 

     (e) Unless expressly provided to the contrary, “hereunder”, “hereof”, “herein” and
words of similar import are references to this Agreement as a whole and not any particular
Section or other provision of this Agreement; and

     (f) “Include” and “including” shall mean include or including without limiting the
generality of the description preceding such term.

     Section 11.17 Construction. Purchaser is a party capable of making such investigation, inspection, review and evaluation of
the Assets as a prudent purchaser would deem appropriate under the circumstances, including with
respect to all matters relating to the Assets, their value, operation and suitability. Each of
Seller and Purchaser has had the opportunity to exercise business discretion in relation to the
negotiation of the details of the transaction contemplated hereby. This Agreement is the result of
arm’s-length negotiations from equal bargaining positions.

     Section 11.18 Limitation on Damages. Notwithstanding anything to the contrary contained herein, none of Purchaser, Seller or any of
their respective Affiliates shall be entitled to consequential, special or punitive damages in
connection with this Agreement and the transactions contemplated hereby (other than consequential,
special or punitive damages suffered by unaffiliated third Persons for which responsibility is
allocated to a Party) and each of Purchaser and Seller, for itself and on behalf of its Affiliates,
hereby expressly waives any right to consequential, special or punitive damages in connection with
this Agreement and the transactions contemplated hereby.

     Section 11.19 Attorney’s Fees. Except as expressly provided in Section 3.4(f) and Section 2.2(b), in connection with any suit,
action or other proceeding to enforce any Party’s obligations under this Agreement, the Party
prevailing in such suit, action or other proceeding shall be entitled to seek the recovery of all
its costs and fees (including attorneys’ fees, experts’ fees, administrative fees, arbitrators’
fees and court costs) incurred in connection with such suit, action or other proceeding.

     Section 11.20 EPC Lease. The Parties acknowledge that the EPC Lease is to be executed at the Closing, provided, however,
that, for purposes of defining “Assets”, “Combined Assets”, “Conveyed Lease Interests”, “Leases”,
“Non-PM Assets” and “Undeveloped Lease Interests” and using such terms herein, the EPC Lease shall
be deemed to have been executed and in effect as of the date hereof. Further, at the Closing, the
EPC Lease shall be deemed to have been executed immediately prior to the Conveyance, so that the
Conveyance has the effect of transferring to Purchaser an undivided one-half (1/2) of Seller’s
interest as lessee thereunder.

[SIGNATURE PAGE FOLLOWS]

-50-

 

     IN WITNESS WHEREOF, this Agreement has been signed by each of the Parties as of the date
first above written.

	 	 	 	 	 	 	 
	 

	 	SELLER:
	 	Equitable Production Company
	 	 
	 
	 	 	 	 	 	 
	 

	 	 	 	By:	 	 
	 
	 	 	 	 	 	 
	 

	 	 	 	 	 	 
	 

	 	 	 	Name:	 	 
	 

	 	 	 	Title:	 	 
	 
	 	 	 	 	 	 
	 

	 	PURCHASER:
	 	Pine Mountain Oil and Gas, Inc.	 	 
	 
	 	 	 	 	 	 
	 

	 	 	 	By:	 	 
	 
	 

	 	 	 	 	 	 
	 

	 	 	 	Name:	 	 
	 

	 	 	 	Title:	 	 

SIGNATURE PAGE TO PURCHASE AND SALE AGREEMENTexv10w2

 

Exhibit 10.2

Execution Version

CONTRIBUTION AGREEMENT

AMONG

EQUITABLE PRODUCTION COMPANY

EQUITABLE GATHERING EQUITY, LLC

PINE MOUNTAIN OIL AND GAS, INC.

AND

NORA GATHERING, LLC

Dated as of April 13, 2007

 

 

TABLE OF CONTENTS

	 	 	 	 	 
	 	 	Page	 
	ARTICLE 1 ASSETS CONTRIBUTION
	 	 	1	 
	Section 1.1 Contribution of Assets
	 	 	1	 
	Section 1.2 Assets
	 	 	2	 
	Section 1.3 Excluded Assets
	 	 	2	 
	Section 1.4 Certain Definitions
	 	 	3	 
	Section 1.5 Effective Time; Proration of Costs and Revenues
	 	 	6	 
	Section 1.6 Intentions of the Parties
	 	 	6	 
	 
	 	 	 	 
	ARTICLE 2 CASH CONTRIBUTION, DISTRIBUTIONS AND LOANS
	 	 	7	 
	Section 2.1 Cash Contribution
	 	 	7	 
	Section 2.2 Effective Time Adjustment
	 	 	7	 
	Section 2.3 Cash Distributions and Loans
	 	 	9	 
	Section 2.4 Capital Account Balances
	 	 	9	 
	 
	 	 	 	 
	ARTICLE 3 TITLE MATTERS
	 	 	9	 
	Section 3.1 Title
	 	 	9	 
	Section 3.2 Definitions of Defensible Title and Permitted Encumbrances
	 	 	10	 
	Section 3.3 Notice of Asserted Title Defects; Defect Adjustments
	 	 	11	 
	Section 3.4 Consents to Assignment and Preferential Rights to Purchase
	 	 	14	 
	Section 3.5 Casualty or Condemnation Loss
	 	 	15	 
	 
	 	 	 	 
	ARTICLE 4 REPRESENTATIONS AND WARRANTIES OF EQUITABLE
	 	 	16	 
	Section 4.1 Disclaimers
	 	 	16	 
	Section 4.2 EPC
	 	 	17	 
	Section 4.3 EGEL
	 	 	18	 
	Section 4.4 Liability for Brokers’ Fees
	 	 	19	 
	Section 4.5 Consents, Approvals or Waivers
	 	 	19	 
	Section 4.6 Litigation
	 	 	20	 
	Section 4.7 Taxes
	 	 	20	 
	Section 4.8 Environmental Laws
	 	 	20	 
	Section 4.9 Compliance with Laws
	 	 	20	 
	Section 4.10 Contracts
	 	 	20	 
	Section 4.11 Permits, etc.
	 	 	21	 
	Section 4.12 Outstanding Capital Commitments
	 	 	21	 
	Section 4.13 Abandonment
	 	 	21	 
	Section 4.14 Condition of Equipment, etc.
	 	 	21	 
	Section 4.15 Payments of Property Costs
	 	 	21	 
	Section 4.16 Absence of Certain Events
	 	 	21	 
	Section 4.17 Regulatory Matters
	 	 	21	 
	Section 4.18 Information
	 	 	22	 
	Section 4.19 Sole Member
	 	 	22	 

-i-

 

	 	 	 	 	 
	 	 	Page	 
	ARTICLE 5 REPRESENTATIONS AND WARRANTIES OF PMOG
	 	 	22	 
	Section 5.1 Existence and Qualification
	 	 	22	 
	Section 5.2 Power
	 	 	22	 
	Section 5.3 Authorization and Enforceability
	 	 	22	 
	Section 5.4 No Conflicts
	 	 	22	 
	Section 5.5 Liability for Brokers’ Fees
	 	 	23	 
	Section 5.6 Consents, Approvals or Waivers
	 	 	23	 
	Section 5.7 Litigation
	 	 	23	 
	Section 5.8 Financing
	 	 	23	 
	Section 5.9 Independent Investigation
	 	 	23	 
	Section 5.10 Equitable Information
	 	 	23	 
	 
	 	 	 	 
	ARTICLE 6 REPRESENTATIONS AND WARRANTIES OF THE COMPANY
	 	 	24	 
	Section 6.1 Existence and Qualification
	 	 	24	 
	Section 6.2 Valid Issuance
	 	 	24	 
	Section 6.3 Power
	 	 	24	 
	Section 6.4 Authorization and Enforceability
	 	 	24	 
	Section 6.5 No Conflicts
	 	 	24	 
	Section 6.6 Consents, Approvals or Waivers
	 	 	25	 
	Section 6.7 Litigation
	 	 	25	 
	 
	 	 	 	 
	ARTICLE 7 COVENANTS OF THE PARTIES
	 	 	25	 
	Section 7.1 Access
	 	 	25	 
	Section 7.2 Indemnity Regarding Access
	 	 	25	 
	Section 7.3 Pre-Closing Notifications
	 	 	26	 
	Section 7.4 Confidentiality, Public Announcements
	 	 	26	 
	Section 7.5 Governmental Reviews
	 	 	27	 
	Section 7.6 Tax Matters
	 	 	27	 
	Section 7.7 Further Assurances
	 	 	29	 
	Section 7.8 Assumption of Obligations
	 	 	29	 
	Section 7.9 Pipeline Agreement
	 	 	29	 
	Section 7.10 Operation of Assets
	 	 	30	 
	Section 7.11 Financial Information
	 	 	30	 
	Section 7.12 Termination of Gas Gathering Agreement
	 	 	30	 
	 
	 	 	 	 
	ARTICLE 8 CONDITIONS TO CLOSING
	 	 	31	 
	Section 8.1 Conditions of Equitable to Closing
	 	 	31	 
	Section 8.2 Conditions of PMOG to Closing
	 	 	32	 
	 
	 	 	 	 
	ARTICLE 9 CLOSING
	 	 	33	 
	Section 9.1 Time and Place of Closing
	 	 	33	 
	Section 9.2 Closing Deliveries of Equitable
	 	 	33	 
	Section 9.3 Closing Deliveries of PMOG
	 	 	34	 
	Section 9.4 Closing Deliveries of the Company
	 	 	35	 
	 
	 	 	 	 
	ARTICLE 10 TERMINATION AND AMENDMENT
	 	 	35	 
	Section 10.1 Termination
	 	 	35	 

-ii-

 

	 	 	 	 	 
	 	 	Page	 
	Section 10.2 Effect of Termination
	 	 	36	 
	 
	 	 	 	 
	ARTICLE 11 INDEMNIFICATIONS; LIMITATIONS
	 	 	36	 
	Section 11.1 Indemnification
	 	 	36	 
	Section 11.2 Indemnification Actions
	 	 	39	 
	Section 11.3 Limitation on Actions
	 	 	40	 
	 
	 	 	 	 
	ARTICLE 12 MISCELLANEOUS
	 	 	41	 
	Section 12.1 Receipts
	 	 	41	 
	Section 12.2 Property Costs
	 	 	42	 
	Section 12.3 Counterparts
	 	 	42	 
	Section 12.4 Notices
	 	 	42	 
	Section 12.5 [Intentionally Omitted]
	 	 	43	 
	Section 12.6 Expenses
	 	 	43	 
	Section 12.7 Replacement of Bonds, Letters of Credit and Guarantees
	 	 	43	 
	Section 12.8 Governing Law; Jurisdiction; Court Proceedings
	 	 	43	 
	Section 12.9 Records
	 	 	44	 
	Section 12.10 Captions
	 	 	44	 
	Section 12.11 Waivers
	 	 	44	 
	Section 12.12 Assignment
	 	 	44	 
	Section 12.13 Entire Agreement
	 	 	44	 
	Section 12.14 Amendment
	 	 	45	 
	Section 12.15 No Third Person Beneficiaries
	 	 	45	 
	Section 12.16 References
	 	 	45	 
	Section 12.17 Construction
	 	 	45	 
	Section 12.18 Limitation on Damages
	 	 	45	 
	Section 12.19 Attorneys’ Fees
	 	 	46	 

-iii-

 

EXHIBITS:

	 	 	 
	Exhibit A-1

	 	Gathering Assets
	Exhibit A-2

	 	Water Disposal Wells; Other Excluded Assets
	Exhibit A-3

	 	Equipment, Machinery, Fixtures and Other Tangible Personal Property and Improvements
	Exhibit A-4

	 	Other Excluded Assets
	Exhibit A-5

	 	Delinquent Liens for Current Taxes or Assessments
	Exhibit A-6

	 	Delinquent Liens Arising in the Ordinary Course of Business
	Exhibit B

	 	Form of Conveyance
	Exhibit C

	 	Form of Amended and Restated Limited Liability Company Agreement of Nora Gathering, LLC
	Exhibit D

	 	Form of Assignment of Easement Agreement
	Exhibit E

	 	Form of Note
	Exhibit F

	 	Permitted Encumbrances
	Exhibit G

	 	Form of Gathering Agreement
	Exhibit H

	 	Form of Gas Purchase Agreement
	Exhibit I

	 	[Intentionally Omitted]
	Exhibit J

	 	[Intentionally Omitted]
	Exhibit K

	 	Nora-T Line
	Exhibit L

	 	Form of Change of Control Agreement
	Exhibit M

	 	Form of Equitable Guaranty
	Exhibit N

	 	Form of Range Guaranty
	Exhibit O

	 	Form of Interconnect Agreement
	 
	 	 
	SCHEDULES:
	 	 
	 
	 	 
	Schedule 4.2(d)

	 	Conflicts (EPC)
	Schedule 4.3(d)

	 	Conflicts (EGEL)
	Schedule 4.5

	 	Consents, Approvals or Waivers (EPC and EGEL)
	Schedule 4.6A

	 	Litigation
	Schedule 4.6B

	 	Litigation
	Schedule 4.7

	 	Taxes and Assessments
	Schedule 4.9

	 	Compliance with Laws
	Schedule 4.10

	 	Contracts
	Schedule 4.11

	 	Permits
	Schedule 4.12

	 	Outstanding Capital Commitments
	Schedule 4.13

	 	Abandonment
	Schedule 4.14

	 	Condition of Equipment, etc.
	Schedule 4.16

	 	Certain Events
	Schedule 7.10

	 	Operation of Assets

-iv-

 

Index of Defined Terms

	 	 	 
	Defined Term	 	Section
	Affiliate

	 	Section 1.4(a)
	Agreement

	 	Preamble
	Assets

	 	Section 1.2
	Asserted Title Defect

	 	Section 3.2(a)
	Asserted Title Defect Amount

	 	Section 3.3(c)
	Business Day

	 	Section 1.4(c)
	Cash Contribution

	 	Section 2.1
	Change of Control Agreement

	 	Section 9.2(g)
	Chosen Court

	 	Section 12.8
	Claim

	 	Section 11.2(b)
	Claim Notice

	 	Section 11.2(b)
	Closing

	 	Section 9.1
	Closing Date

	 	Section 9.1
	Closing Payment

	 	Section 2.2(a)
	Company

	 	Preamble
	Company Indemnified Persons

	 	Section 11.1(b)
	Consents

	 	Section 4.5
	Contracts

	 	Section 1.2(b)
	Conveyance

	 	Section 9.2(a)
	Damages

	 	Section 11.1(e)
	Defensible Title

	 	Section 3.2(a)
	Easements

	 	Section 1.2(c)
	Equitable

	 	Preamble
	Equitable Indemnified Persons

	 	Section 11.1(c)
	Effective Time

	 	Section 1.4(d)
	Effective Time Adjustment

	 	Section 2.2(a)
	EGEL

	 	Preamble
	Encumbrances

	 	Section 3.2(a)
	Environmental Laws

	 	Section 4.8
	EPC

	 	Preamble
	Equitable

	 	Preamble
	Exchange Act

	 	Section 1.4(e)
	Excluded Assets

	 	Section 1.3
	Execution Date

	 	Preamble
	Exploration Agreement

	 	Section 1.4(f)
	Exploration Agreement PMOG Area

	 	Section 1.4(g)
	Gathering Agreement

	 	Section 9.2(e)
	Gathering Assets

	 	Section 1.2(a)
	Governmental Authority

	 	Section 1.4(h)
	Governmental Permits

	 	Section 4.11
	HSR Act

	 	Section 7.5
	Hydrocarbons

	 	Section 1.4(i)

-v-

 

	 	 	 
	Defined Term	 	Section
	Indemnified Person

	 	Section 11.2(a)
	Indemnifying Person

	 	Section 11.2(a)
	Laws

	 	Section 1.4(j)
	Letter of Intent

	 	Section 12.13
	LLC Agreement

	 	Section 9.2(d)
	Material Adverse Effect

	 	Section 4.1(d)
	New Easement Agreement

	 	Section 9.3(d)
	New Lease

	 	Section 1.4(k)
	Nora Field

	 	Section 1.4(l)
	Nora-T Line

	 	Section 1.4(m)
	Original Lease

	 	Section 1.4(n)
	Party; Parties

	 	Preamble
	Party Lawsuit

	 	Section 1.4(o)
	Permitted Encumbrances

	 	Section 3.2(b)
	Person

	 	Section 1.4(p)
	Pipeline Agreement

	 	Recitals
	PMOG

	 	Preamble
	PMOG Indemnified Persons

	 	Section 11.1(b)
	Pre-Closing Taxable Period

	 	Section 7.6(c)
	Preferential Rights

	 	Section 4.5
	Property Costs

	 	Section 1.5(c)
	Purchase Agreement

	 	Section 1.4(q)
	Records

	 	Section 1.4(r)
	Scheduled Transfer Requirements

	 	Section 4.5(a)
	SEC

	 	Section 1.4(s)
	Securities Act

	 	Section 1.4(t)
	Statements of Revenues and Expenses

	 	Section 7.11
	Straddle Taxable Period

	 	Section 7.6(c)
	Tax

	 	Section 1.4(u)
	Tax Return

	 	Section 1.4(v)
	Termination Date

	 	Section 10.1
	Title Arbitrator

	 	Section 3.3(f)
	Title Claim Date

	 	Section 3.3(a)
	Title Defects

	 	Section 3.2(a)
	Transaction Documents

	 	Section 12.13
	Transfer Taxes

	 	Section 1.4(w)

-vi-

 

CONTRIBUTION AGREEMENT

     This Contribution Agreement (this “Agreement”), dated as of April ___, 2007, (the “Execution
Date”) is by and among Equitable Production Company, a Pennsylvania corporation (“EPC”), Equitable
Gathering Equity, LLC, a Delaware limited liability company (“EGEL”, and, collectively with EPC,
“Equitable”), Pine Mountain Oil and Gas, Inc., a Virginia corporation (“PMOG”), and Nora Gathering,
LLC, a Delaware limited liability company (the “Company”). EPC, EGEL, PMOG and the Company are
sometimes referred to herein, collectively, as the “Parties” and, individually, as a “Party.”

RECITALS:

     WHEREAS, EPC and EGEL are the owners of various natural gas pipeline gathering facilities and
pipelines, commonly known as the Nora Gas Gathering System (including the Nora-T pipeline), located
in Dickenson, Buchanan, Wise and Russell Counties, Virginia, and used in the gathering of natural
gas from the Nora Field, as further described herein;

     WHEREAS, such gathering facilities and pipelines are situated upon, through and/or under
various properties, which are owned or held by EPC, PMOG, and/or EGEL by virtue of various
agreements or conveyances;

     WHEREAS, EPC and EGEL have entered into that certain Pipeline Agreement dated as of January 1,
2005 (the “Pipeline Agreement”), for the lease and/or sublease of facilities and pipelines relating
to such gathering system;

     WHEREAS, Equitable desires to contribute such gathering facilities and pipelines, together
with all of Equitable’s other rights, titles and interests in and to such gathering facilities and
pipelines and the Pipeline Agreement, to the Company on the terms and conditions hereinafter set
forth; and

     WHEREAS, PMOG desires to contribute a specified amount of cash and certain assets to the
Company on the terms and conditions hereinafter set forth.

     NOW, THEREFORE, in consideration of the premises and of the mutual promises, representations,
warranties, covenants, conditions and agreements contained herein, and for other valuable
consideration, the receipt and sufficiency of which is hereby acknowledged, the Parties agree as
follows:

ARTICLE 1

ASSETS CONTRIBUTION

     Section 1.1 Contribution of Assets. On the terms and conditions contained in this
Agreement, Equitable agrees to contribute to the Company and the Company agrees to accept

-1-

 

from
Equitable the Assets. As consideration for the
contribution of the Assets, the Company shall issue to EGEL a fifty percent (50%) membership
interest in the Company.

     Section 1.2 Assets. “Assets” means all of the right, title and interest of Equitable in
and to the following:

     (a) the gas gathering system, facilities, compressors, pipelines, pig and other
stations and Easements described on Exhibit A-1 (the “Gathering Assets”);

     (b) all presently existing contracts, agreements and instruments by which the Assets
are bound or subject, including operating agreements, pipeline agreements, declarations and
orders, exchange agreements, and transportation agreements, but excluding any contract,
agreement or instrument to the extent that (1) transfer is restricted by third-party
agreement or applicable Law, (2) Equitable is unable to obtain, using commercially
reasonable efforts, a waiver of, or otherwise satisfy, such transfer restriction (provided
that Equitable shall not be required to provide consideration or undertake obligations to or
for the benefit of the holders of such rights in order to obtain any necessary consent or
waiver), and (3) the failure to obtain such waiver or satisfy such transfer restriction
would cause a termination of such contract, agreement or instrument or a material impairment
of the rights thereunder (subject to such exclusions, the “Contracts”);

     (c) all easements, permits, licenses, servitudes, rights-of-way, surface leases and
other surface rights appurtenant to, and used or held for use primarily in connection with,
the Gathering Assets or other Assets (the “Easements”), including those Easements described
on Exhibit A-1, but excluding any of the foregoing to the extent that (1) transfer is
restricted by third-party agreement or applicable Law, (2) Equitable is unable to obtain,
using commercially reasonable efforts, a waiver of, or otherwise satisfy, such transfer
restriction (provided that Equitable shall not be required to provide consideration or
undertake obligations to or for the benefit of the holders of such rights in order to obtain
any necessary consent or waiver), and (3) the failure to obtain such waiver or satisfy such
transfer restriction would cause a termination of such permit or other instrument or a
material impairment of the rights thereunder;

     (d) all gathering lines, pipelines, compressors, equipment, machinery, fixtures and
other tangible personal property and improvements used or held for use primarily in
connection with the ownership or operation of the Gathering Assets or other Assets, but
excluding any such items included in the Excluded Assets; and

     (e) the Records.

     Section 1.3 Excluded Assets. Notwithstanding anything to the contrary contained herein,
the Assets shall not include, and the following are excepted, reserved and excluded from the
transactions contemplated hereby (collectively, the “Excluded Assets”):

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     (a) all water disposal wells, and any transfer facility, loadout facility or other
facility associated with such water disposal wells, primarily used in connection with the
disposal of produced water derived from or otherwise attributable to any of the wells that
produce gas transported through the Gathering Assets, including those water disposal wells
and associated facilities described on Exhibit A-2;

     (b) all corporate, financial, income and franchise tax and legal records of Equitable
that relate to Equitable’s business generally (other than those relating primarily to the
Assets), and all books, records and files that relate to the Excluded Assets and copies of
any Records retained by Equitable;

     (c) (i) equipment, machinery, fixtures and other tangible property and improvements
described on Exhibit A-3 attached hereto; (ii) computers and peripheral equipment related to
such equipment; (iii) communication and telecommunication equipment including but not
limited to radios, towers, and networking equipment; (iv) custom applications and databases;
(v) measurement and data collection devices; and (vi) software and associated licenses,
including but not limited to any software relating to the SCADA System, Enertia, Altra,
Flow-Cal, Talon, Aries, Production Access, Pre-drill Manager, Geographix, Synergy, and
CygNet;

     (d) all rights and all obligations of Equitable with respect to any refund or payment
of Taxes or other costs or expenses borne by Equitable or Equitable’s predecessors in
interest and title attributable to the Assets and the period prior to the Effective Time;

     (e) all rights and all obligations of Equitable with respect to the claims and causes
of action relating to the Assets that accrued or arose prior to the Effective Time (other
than claims or causes of action for proceeds to which the Company is entitled under Section
1.5(b));

     (f) Equitable’s area-wide bonds, permits and licenses (including all Federal
Communications Commission licenses) or other permits, licenses or authorizations used in the
conduct of Equitable’s business generally and not exclusively related to the Gathering
Assets; and

     (g) those other assets and interests identified on Exhibit A-4.

     Section 1.4 Certain Definitions. As used herein:

     (a) “Affiliate” means, with respect to any Person, a Person that directly or indirectly
controls, is controlled by or is under common control with such Person, with
control in such context meaning (i) the power to direct the vote of more than fifty
percent (50%) of the voting shares or other securities of such Person through ownership,
pursuant to a
written agreement, or otherwise or (ii) the power to direct the management and
policies of a Person through ownership of voting shares or other securities, pursuant to a

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written agreement, or otherwise. For the purposes of this Agreement, the Company shall not
be considered an Affiliate of any Party or such Party’s Affiliates.

     (b) [Intentionally omitted].

     (c) “Business Day” means any day other than a Saturday, a Sunday, or a day on which
banks are closed for business in Pittsburgh, Pennsylvania or Fort Worth, Texas.

     (d) “Effective Time” means 12:01 a.m. local time where the Assets are located on June
1, 2006.

     (e) “Exchange Act” means the Securities Exchange Act of 1934, as amended.

     (f) “Exploration Agreement” has the meaning given to such term in the Purchase
Agreement.

     (g) “Exploration Agreement PMOG Area” has the meaning given to such term in the
Purchase Agreement.

     (h) “Governmental Authority” means any government and/or any political subdivision
thereof, including departments, courts, commissions, boards, bureaus, ministries, agencies
or other instrumentalities.

     (i) “Hydrocarbons” means all oil, gas, coalbed methane gas and other associated
hydrocarbons.

     (j) “Laws” means all laws, statutes, rules, regulations, ordinances, orders,
requirements and codes of Governmental Authorities.

     (k) “New Lease” has the meaning given to such term in the Purchase Agreement.

     (l) “Nora Field” has the same meaning as the term “AMI” in the Operating Agreement (as
defined in the Purchase Agreement).

     (m) “Nora-T Line” means the pipeline depicted on Exhibit K.

     (n) “Original Lease” has the meaning given to such term in the Purchase Agreement.

     (o) “Party Lawsuit” means the ongoing litigation and claims in the action styled as
Pine Mountain Oil & Gas, Inc. v. Equitable Production Company, USDC WD Va,
Abingdon Division, CA No. 1:05CV095 (including the related September 22, 2005
arbitration proceeding).

     (p) “Person” means any individual, corporation, partnership, limited liability company,
trust, estate, Governmental Authority or any other entity.

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     (q) “Purchase Agreement” means that certain Purchase and Sale Agreement of even date
herewith between EPC and PMOG.

     (r) “Records” means all gathering and transportation files, compression files, land
files and surveys, Contract files and all other books, records, data, files, maps and
accounting records to the extent relating primarily to the Assets, excluding however, (A)
any record to the extent that: (1) disclosure or transfer of such record is restricted by
any third-party agreement or applicable Law, (2) Equitable is unable to obtain, using
commercially reasonable efforts, a waiver of, or otherwise satisfy, such disclosure
restriction (provided that Equitable shall not be required to provide consideration or
undertake obligations to or for the benefit of the holders of such rights in order to obtain
any necessary consent or waiver) and (3) the failure to obtain such waiver or satisfy such
disclosure restriction would cause a termination of such instrument or a material impairment
of the rights thereunder; (B) computer software; (C) all legal records and legal files of
Equitable (other than (x) title opinions and (y) Contracts) and all other work product of
and attorney-client communications with any of Equitable’s legal counsel; (D) records
relating to the sale of the Assets, including bids received from and records of negotiations
with third Persons; (E) any other records to the extent constituting Excluded Assets; and
(F) contracts and agreements of no further force and effect as of the Effective Time.

     (s) “SEC” means the U.S. Securities and Exchange Commission.

     (t) “Securities Act” means the Securities Act of 1933, as amended, and any successor
statute thereto and the rules and regulations of the SEC promulgated thereunder.

     (u) “Tax” means all taxes, including income tax, surtax, remittance tax, presumptive
tax, net worth tax, production tax, pipeline transportation tax, value added tax,
withholding tax, gross receipts tax, windfall profits tax, profits tax, severance tax,
personal property tax, real property tax, sales tax, service tax, transfer tax, use tax,
excise tax, premium tax, customs duties, stamp tax, motor vehicle tax, entertainment tax,
insurance tax, capital stock tax, franchise tax, occupation tax, payroll tax, employment
tax, social security, unemployment tax, disability tax, alternative or add-on minimum tax,
estimated tax, and any other assessments, duties, fees, or levies imposed by a Governmental
Authority, together with any interest, fine or penalty thereon, or addition thereto.

     (v) “Tax Return” means any return, declaration, report, claim for refund, or
information return or statement relating to Taxes, including any schedule or attachment
thereto, and including any amendment thereof, required to be filed with any Governmental
Authority.

     (w) “Transfer Taxes” means all transfer, sales, use, documentary, stamp duty,
conveyance and other similar Taxes, duties, fees or charges.

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     Section 1.5 Effective Time; Proration of Costs and Revenues.

     (a) Title and interest in and to the Assets shall be transferred from Equitable to the
Company at the Closing, but certain financial benefits and burdens in respect of the Assets
shall be transferred effective as of the Effective Time, as described below.

     (b) The Company shall be entitled to all income, proceeds, receipts and credits earned
with respect to the Assets on and after the Effective Time, and shall be responsible for
(and entitled to any refunds with respect to) all Property Costs incurred on and after the
Effective Time (provided that the Company’s entitlement to income, proceeds, receipts and
credits earned with respect to, and responsibility for and entitlement to refunds with
respect to Property Costs relating to, certain of the Assets shall be adjusted as of Closing
in the manner described in Section 2.2). For the purpose of determining the amount of
gathering fees to be included as income under this Section 1.5(b) with respect to volumes of
gas produced by any member of the Company or any of its Affiliates, it shall be assumed that
the Gathering Agreement was effective as of the Effective Time. Equitable shall be entitled
to all income, proceeds, receipts and credits earned with respect to the Assets prior to the
Effective Time, and shall be responsible for (and entitled to any refunds with respect to)
all Property Costs incurred prior to the Effective Time (provided that Equitable’s
entitlement to income, proceeds, receipts and credits earned with respect to, and
responsibility for and entitlement to refunds with respect to Property Costs relating to,
certain of the Assets shall be adjusted as of Closing in the manner described in Section
2.2). “Earned” and “incurred”, as used in this Agreement, shall be interpreted in
accordance with United States generally accepted accounting principles (as published by the
Financial Accounting Standards Board). Surface use fees, insurance premiums and other
Property Costs that are paid periodically shall be prorated based on the number of days in
the applicable period falling before and at or after the Effective Time, except that
production, severance and similar Taxes based upon revenues generated by the Assets shall be
prorated based on the amount of revenues generated by the Assets before, or at and after the
Effective Time. In each case, the Company shall be responsible for the portion allocated to
the period on and after the Effective Time and Equitable shall be responsible for the
portion allocated to the period before the Effective Time.

     (c) “Property Costs” means all operating expenses (including costs of insurance and ad
valorem, property and similar Taxes based upon or measured by the ownership or
operation of the Assets, but excluding any other Taxes), capital expenditures incurred
in the ownership and operation of the Assets in the ordinary course of business, and
overhead costs in each case as would have been charged to the Assets under the limited
liability company agreement of the Company assuming it was in effect at all times during the
period between the Effective Time and Closing.

     Section 1.6 Intentions of the Parties. The Parties acknowledge that the description of the
Gathering Assets comprising the Nora Gas Gathering System (including the Nora-T Line) as provided
on Exhibit A-1 may be incomplete, including with respect to easements, servitudes,

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rights-of-way,
surface leases and other surface rights and the plat of such system, and the Parties may amend
Exhibit A-1 prior to the Closing Date in order to more fully describe the Gathering Assets (it
being acknowledged by the Parties that the Gathering Assets are intended to cover all of
Equitable’s and its Affiliates’ interests in and to their currently existing natural gas gathering
system and related assets, other than the Excluded Assets and as set forth in the following
sentence, located within the Nora Field including any currently existing sections of the Nora Gas
Gathering System extending beyond the Nora Field that service wells in the Nora Field).
Notwithstanding the foregoing, the Parties further acknowledge that the Gathering Assets do not
include any gas gathering system, facilities, compressors, pipelines, pig and other stations,
Easements, or other assets and interests of EPC or EGEL in the separate gathering system commonly
known as the Roaring Fork Gas Gathering System located within and outside of the Nora Field, which
system is used as of the date hereof in connection with the transportation of Hydrocarbons produced
from the wells listed on Exhibit A-4, among other wells.

ARTICLE 2

CASH CONTRIBUTION, DISTRIBUTIONS AND LOANS

     Section 2.1 Cash Contribution. On the terms contained in this Agreement, PMOG agrees to
contribute to the Company at the Closing an amount of cash equal to Fifty-Three Million Sixty Five
Thousand One Hundred Seventy Six Dollars and Thirteen Cents (US$53,065,176.13) (as adjusted
pursuant to Section 3.4 and Section 3.5, the “Cash Contribution”), to be applied as set forth in
Section 2.3. Additionally, on the terms and conditions contained in this Agreement, PMOG agrees to
contribute to the Company and the Company agrees to accept from PMOG, PMOG’s right, title and
interest (if any) in and to the gas gathering system, facilities, compressors and pipelines
described on Exhibit A-1, excluding any interest that PMOG owns in its capacity as the lessor under
the Original Lease or the New Lease or as Grantor under the New Easement Agreement. As
consideration for the contribution of such assets and the Cash Contribution, the Company shall
issue to PMOG a fifty percent (50%) membership interest in the Company.

     Section 2.2 Effective Time Adjustment.

     (a) Not later than five (5) Business Days prior to the Closing Date, Equitable shall
prepare in good faith, using the best information available to Equitable, and deliver to
PMOG a preliminary settlement statement setting forth an estimated calculation of the
net amount received (or paid) by Equitable for the account of the Company pursuant to
Section 1.5(b) (such net amount being called herein the “Effective Time Adjustment. Such
statement shall show the calculation of each adjustment, based, to the extent possible, on
actual credits, charges, receipts and other items attributable to the period of time from
and after the Effective Time and PMOG shall review such preliminary settlement statement and
discuss with Equitable any changes necessary thereto. The Parties shall use their
reasonable efforts exercised in good faith to agree upon such preliminary settlement
statement as of Closing. An amount equal to eighty percent (80%) of the estimated Effective
Time Adjustment, set forth in the preliminary settlement statement mutually agreed to by the
Parties in accordance with this Section 2.2(a), shall

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constitute the dollar amount to be
contributed by PMOG to the Company at the Closing (the “Closing Payment”), together with the
Cash Contribution to be contributed by PMOG at Closing.

     (b) As soon as reasonably practicable after the Closing, but not later than the one
hundred and twentieth (120th) day following the Closing Date, Equitable shall
prepare in good faith, using the best information available to Equitable, and deliver to
PMOG a statement setting forth the final calculation of the Effective Time Adjustment and
showing the calculation of each adjustment, based, to the extent possible, on actual
credits, charges, receipts and other items attributable to the period of time from and after
the Effective Time and shall supply reasonable documentation available to support any such
credits, charges, receipts or other items. As soon as reasonably practicable but not later
than the thirtieth (30th) day following receipt of Equitable’s statement
hereunder, PMOG shall deliver to Equitable a written report containing any changes that PMOG
proposes be made to such statement. Equitable and PMOG shall undertake to agree on the
amount of the actual Effective Time Adjustment no later than one hundred and eighty (180)
days after the Closing Date. In the event that such Parties cannot reach agreement within
such period of time, either Equitable or PMOG may refer the remaining matters in dispute to
Ernst & Young LLP, or if Ernst & Young LLP is unable or unwilling to perform its obligations
under this Section 2.2(b), such other nationally-recognized independent accounting firm as
may be accepted by Equitable and PMOG, for review and final determination. The accounting
firm shall conduct the arbitration proceedings in Pittsburgh, Pennsylvania in accordance
with the Commercial Arbitration Rules of the American Arbitration Association in effect as
of the date hereof, to the extent such rules do not conflict with the terms of this Section
2.2(b). The accounting firm’s determination shall be made within thirty (30) days after
submission of the matters in dispute and shall be final and binding on all Parties, without
right of appeal. In determining the proper amount of the Effective Time Adjustment, the
accounting firm shall not increase the Effective Time Adjustment more than the increase
proposed by Equitable nor decrease the Effective Time Adjustment more than the decrease
proposed by PMOG, as applicable. The accounting firm shall act as an expert for the limited
purpose of determining the specific disputed matters submitted by either Equitable or PMOG
and may not award damages or penalties. Equitable and PMOG shall each bear its own legal
fees and other costs of presenting its case. Equitable and PMOG shall bear one-half of
the costs and expenses of the accounting firm. Within ten (10) days after the earlier
of (i) the expiration of PMOG’s thirty (30) day review period without delivery of any
written report or (ii) the date on which the Equitable and PMOG, or the accounting firm, as
applicable, finally determine the actual Effective Time Adjustment, (A) Equitable shall
contribute to the Company an amount of cash equal to the amount by which the estimated
Effective Time Adjustment exceeds the actual Effective Time Adjustment; or (B) PMOG shall
contribute to the Company an amount of cash equal to eighty percent (80%) of the amount by
which the actual Effective Time Adjustment exceeds the estimated Effective Time Adjustment.

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     (c) The adjustment described in Section 2.2(a) shall serve to satisfy up to the amount
of the adjustment (i) the Company’s entitlement under Section 1.5 to income, proceeds,
receipts and credits earned with respect to the Assets between the Effective Time and the
Closing (and the Company shall not have any separate rights to receive any income, proceeds,
receipts and credits with respect to which an adjustment has been made) and (ii) the
Company’s obligation under Section 1.5 to pay Property Costs attributable to the ownership
and operation of the Assets which are incurred between the Effective Time and the Closing
(and the Company shall not be separately obligated to pay for any Property Costs with
respect to which an adjustment has been made).

     Section 2.3 Cash Distributions and Loans. At the Closing, the Company shall:

     (a) Distribute an amount equal to twenty percent (20%) of the sum of Sixty-Six Million
Three Hundred Thirty One Thousand Four Hundred Seventy Dollars and Sixteen Cents
(US$66,331,470.16) and the Effective Time Adjustment to EGEL; and

     (b) Loan the remaining amount of cash contributed to the Company hereunder to ET Blue
Grass Company, with such loan to be entered by a separate note in substantially the form
attached hereto as Exhibit E, which loan shall be repaid prior to the Company requiring any
capital contribution by PMOG or Equitable under the LLC Agreement.

     Section 2.4 Capital Account Balances. Following the completion of the contributions by
Equitable and PMOG, the distribution to EGEL pursuant to Section 2.3(a) and the other actions taken
pursuant to Section 2.3, the respective capital account balances of EGEL and PMOG shall be equal.

ARTICLE 3

TITLE MATTERS

     Section 3.1 Title.

     (a) The Conveyance shall contain a special warranty of title against every Person
lawfully claiming or to claim the interest to be conveyed by Equitable to the Company or
any part thereof by, through and under Equitable and its Affiliates, but not otherwise,
subject to Permitted Encumbrances, but shall otherwise be without warranty of title,
express, implied or statutory, except that the Conveyance shall transfer to the Company all
rights or actions on title warranties given or made by Equitable’s predecessors (other than
Affiliates of Equitable), to the extent Equitable may legally transfer such rights.

     (b) Notwithstanding anything to the contrary in Section 3.1(a) and the Conveyance,
Section 3.3 shall provide PMOG’s and the Company’s exclusive remedy in respect of Asserted
Title Defects reported in accordance with this Article 3. Neither PMOG nor the Company
shall be entitled to make any claims against Equitable or any of its Affiliates under
Equitable’s special warranty of title in the Conveyance against any such Asserted Title
Defect.

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     Section 3.2 Definitions of Defensible Title and Permitted Encumbrances.

     (a) As used in this Agreement with respect to the Assets, the term “Defensible Title”
means marketable title in southwestern Virginia, free and clear of all liens, charges,
encumbrances, irregularities or other defects (“Encumbrances”) other than Permitted
Encumbrances. The term “Title Defect” means, as applicable, (i) any Encumbrance that would
cause Equitable not to have Defensible Title or (ii) other than with respect to the lands
covered by the Original Lease or any Exploration Agreement PMOG Area, the lack of easements
or other agreements covering the continuous length of each pipeline included in the Assets
allowing for the transportation of the Hydrocarbons as currently transported through such
pipeline. The term “Asserted Title Defect” means a Title Defect reported by PMOG or the
Company pursuant to Section 3.3 hereof.

     (b) As used in this Agreement, the term “Permitted Encumbrances” means any or all of
the following:

     (i) all Contracts;

     (ii) Preferential Rights;

     (iii) third-party consent requirements and similar restrictions with respect to
which waivers or consents are obtained by Equitable from the appropriate parties
prior to the Closing Date or the appropriate time period for asserting the right has
expired or which are expressly not required to be satisfied prior to a transfer;

     (iv) liens for current Taxes or assessments not yet delinquent or, if
delinquent, being contested in good faith by appropriate actions and listed on
Exhibit A-5;

     (v) materialman’s, mechanic’s, repairman’s, employee’s, contractor’s,
operator’s and other similar liens or charges arising in the ordinary course of
business for amounts not yet delinquent (including any amounts being withheld
as provided by Law), or, if delinquent, being contested in good faith by appropriate
actions and listed on Exhibit A-6;

     (vi) all rights to consent, by required notices to, filings with, or other
actions by Governmental Authorities in connection with the sale or conveyance of
easements, rights of way, licenses, gathering facilities or interests therein if
they are customarily obtained subsequent to the sale or conveyance;

     (vii) rights of reassignment arising upon final intention to abandon or release
any easement or right of way;

     (viii) with regard to lands covered by the Original Lease or included in the
Exploration Agreement PMOG Area and to the extent not created by, through

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or under
Equitable: easements, rights-of-way, servitudes, permits and other rights in respect
of surface and subsurface operations and any rights related to coal, coal seams or
coal mining, whether statutory or otherwise, other than rights to explore for,
develop and produce coalbed methane;

     (ix) with regard to lands not covered by the Original Lease or included in the
Exploration Agreement PMOG Area: easements, rights-of-way, servitudes, permits and
other rights in respect of surface and subsurface operations which would be accepted
by a reasonably prudent purchaser engaged in the business of owning and operating
assets similar to the Assets in the Appalachian Basin;

     (x) all rights reserved to or vested in any Governmental Authority to control
or regulate any of the Assets in any manner and all obligations and duties under all
applicable Laws or under any franchise, grant, license or permit issued by any such
Governmental Authority;

     (xi) any Encumbrance which is discharged by Equitable at or prior to Closing;

     (xii) with respect to the easements, rights of way and other rights over, under
or through any lands and properties owned by PMOG or its Affiliates, any Encumbrance
or imperfection in title other than those Encumbrances or imperfections in title
arising by, through or under Equitable or its Affiliates;

     (xiii) any matters shown on Exhibit F; and

     (xiv) any other Encumbrances which do not, individually or in the aggregate,
materially detract from the value of or materially interfere with the use, ownership
or operation of the Assets subject thereto or affected thereby (as currently used,
owned or operated) and which would be accepted by a reasonably prudent purchaser
engaged in the business of owning and operating gathering system or pipeline assets
in the Appalachian Basin.

     Section 3.3 Notice of Asserted Title Defects; Defect Adjustments.

     (a) To assert a claim of a Title Defect prior to Closing, PMOG must deliver a claim
notice to Equitable on or before 5:00 p.m. EDT on April 25, 2007 (the “Title Claim Date”),
except as otherwise provided under Section 3.4 or Section 3.5; provided that PMOG agrees to
furnish Equitable at the end of every week period following the execution of this Agreement
and prior to the Title Claim Date with a claim notice if any officer of PMOG or its
Affiliates discovers or learns of any Title Defect during such period. Each such notice
shall be in writing and shall include (i) a description of the Asserted Title
Defect(s),
(ii) the Assets affected, (iii) supporting documents reasonably necessary for Equitable (as
well as any title attorney or examiner hired by Equitable) to verify the existence of such
Asserted Title
Defect(s) and (iv) the amount by which PMOG reasonably believes the value of
those Assets is reduced by such Asserted Title

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Defect(s) and the computations and
information upon which PMOG’s belief is based. Subject to the Company’s rights under the
special warranty of title described in Section 3.1(a) and its and PMOG’s rights with respect
to any breach of Equitable’s covenant under Section 7.10(f), PMOG and the Company shall be
deemed to have waived all Title Defects of which Equitable has not been given notice on or
before the Title Claim Date.

     (b) In the event that PMOG notifies Equitable of a Title Defect before the Title Claim
Date, Equitable shall have the right, but not the obligation, to attempt, at its sole cost,
to cure or remove any Asserted Title Defects of which it has been notified by PMOG. If
Equitable so elects to cure or remove any Asserted Title Defect, PMOG shall use commercially
reasonable efforts to cooperate with Equitable’s efforts to cure or remove such Asserted
Title Defect. If prior to Closing, Equitable has been unable to cure or remove any Asserted
Title Defect, then Equitable and PMOG mutually shall elect to have one of the following
options apply:

     (i) Remove the Assets subject to such Asserted Title Defect from the
transaction contemplated by this Agreement, if the operation of Gathering Assets
(taken as a whole) would not be materially impaired thereby. Such removed Assets
shall not be assigned at the Closing, shall become “Excluded Assets” for all
purposes hereunder and the Cash Contribution shall be reduced by an amount equal to
the value for such Assets.

     (ii) Assign the Assets subject to the Asserted Title Defect to the Company at
Closing, and defend, indemnify and hold the Company, the successors, assigns and
Affiliates of the Company, PMOG and PMOG’s Affiliates harmless from and against all
Damages that arise out of or that any such Person may suffer as a result of such
Asserted Title Defect pursuant to a form of indemnity agreement mutually agreeable
to the Parties.

     (iii) Assign the Assets subject to the Asserted Title Defect to the Company at
Closing, and reduce the Cash Contribution in accordance with Section 3.3(c).

     (c) The Cash Contribution shall be reduced by an amount (the “Asserted Title Defect
Amount”) equal to the reduction in the value for the Assets subject to an uncured Asserted
Title Defect, which reduction is caused by such uncured Asserted Title Defect as determined
pursuant to Section 3.3(e); provided that no reduction shall be made in the Cash
Contribution with respect to any Asserted Title Defect for which an election has been made
pursuant to Section 3.3(b)(ii).

     (d) Except for the Company’s rights under the special warranty of title described in
Section 3.1(a) and its and PMOG’s rights with respect to any breach of Equitable’s covenant
under Section 7.10(f), Section 3.3(c) shall, to the fullest extent permitted by applicable
Laws, be the exclusive right and remedy of PMOG and the Company against Equitable or its
Affiliates with respect to any Title Defect attributable to the Assets.

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     (e) The Asserted Title Defect Amount resulting from an Asserted Title Defect shall be
determined as follows:

     (i) If PMOG and Equitable agree on the Asserted Title Defect Amount, that
amount shall be the Asserted Title Defect Amount;

     (ii) If the Asserted Title Defect is an Encumbrance which is undisputed and
liquidated in amount, then the Asserted Title Defect Amount shall be the amount
necessary to be paid to remove the Asserted Title Defect from the affected Assets;

     (iii) If the Asserted Title Defect represents an Encumbrance of a type not
described in subsections (i) or (ii) above, the Asserted Title Defect Amount shall
be determined by taking into account the value of the Assets so affected, the
portion of the Assets affected by the Asserted Title Defect, the legal effect of the
Asserted Title Defect, the potential economic effect of the Asserted Title Defect
over the life of the affected Assets, the values placed upon the Asserted Title
Defect by PMOG and Equitable and such other factors as are necessary to make a
proper evaluation;

     (iv) Notwithstanding anything to the contrary in this Article 3, except for
adjustments required by Section 3.4 or Section 3.5, there shall be no Cash
Contribution adjustment for Asserted Title Defects unless and until the aggregate
Asserted Title Defect Amounts for all Assets for which claim notices were timely
delivered pursuant to Section 3.3(a) exceed Three Hundred Fifty Thousand Dollars
(US$350,000.00), and then only to the extent that the aggregate Asserted Title
Defect Amounts exceed Three Hundred Fifty Thousand Dollars (US$350,000.00);

     (v) If an Asserted Title Defect of the type not described in subsections (i) or
(ii) above is reasonably susceptible of being cured, the Asserted Title Defect
Amount determined under subsections (iii) above shall not be greater than the lesser
of (1) the reasonable cost and expense of curing such Asserted Title Defect or (2)
the share of such curative work cost and expense which is allocated to such Assets
pursuant to subsection (vi) below; and

     (vi) The Asserted Title Defect Amount with respect to an Asset shall be
determined without duplication of any costs or losses (A) included in another
Asserted Title Defect Amount hereunder or (B) included in a casualty loss under
Section 3.5. To the extent that the cost to cure any Asserted Title Defect will
result in the curing of all or a part of one or more other Asserted Title Defects,
such cost of cure shall be allocated for purposes of Section 3.3(e)(v) among the
Assets so affected on a fair and reasonable basis.

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     (f) Equitable and PMOG shall attempt to agree on all Asserted Title Defects and
Asserted Title Defect Amounts by two (2) Business Days prior to the Closing Date. If
Equitable and PMOG are unable to agree by that date, the average of Equitable’s and PMOG’s
estimates with respect to the Asserted Title Defect Amounts for the Asserted Title Defects
shall be used to determine the Effective Time Adjustment pursuant to Section 2.2, and all
Asserted Title Defects and Asserted Title Defect Amounts in dispute shall be exclusively and
finally resolved by arbitration pursuant to this Section 3.3(f). During the ten (10)
Business Day period following the Closing Date, Asserted Title Defects and Asserted Title
Defect Amounts in dispute shall be submitted to an attorney with at least ten (10) years of
experience in oil and gas and pipeline titles in the southwestern Virginia as selected by
mutual agreement of PMOG and Equitable (the “Title Arbitrator”). The arbitration proceeding
shall be held in Pittsburgh, Pennsylvania and shall be conducted in accordance with the
Commercial Arbitration Rules of the American Arbitration Association in effect as of the
date hereof, to the extent such rules do not conflict with the terms of this Section 3.3(f).
The Title Arbitrator’s determination shall be made within twenty (20) days after submission
of the matters in dispute and shall be final and binding upon the Parties, without right of
appeal. In making his determination, the Title Arbitrator shall be bound by the rules set
forth in Section 3.3(e) and may consider such other matters as in the opinion of the Title
Arbitrator are necessary or helpful to make a proper determination. Additionally, with the
prior written consent of PMOG and Equitable, the Title Arbitrator may consult with and
engage disinterested third parties to advise the Title Arbitrator, including title attorneys
from other states and petroleum engineers. In no event shall any Asserted Title Defect
Amount exceed the estimate given by PMOG in its claim notice delivered in accordance with
Section 3.3(a). The Title Arbitrator shall act as an expert for the limited purpose of
determining the specific disputed Asserted Title Defects and Asserted Title Defect Amounts
submitted by either PMOG or Equitable and may not award damages, interest or penalties to
either PMOG or Equitable with respect to any matter. Equitable and PMOG shall each bear its
own legal fees and other costs of presenting its case. Each of Equitable and PMOG shall
bear one-half of the costs and expenses of the Title Arbitrator.

     Section 3.4 Consents to Assignment and Preferential Rights to Purchase.

     (a) Equitable will use reasonable efforts, consistent with industry practices in
transactions of this type, to identify, with respect to all Assets, the names and addresses
of all parties holding Preferential Rights and Consents applicable to the transactions
contemplated hereby. In attempting to identify the names and addresses of such parties
holding such Preferential Rights and Consents, Equitable shall in no event be obligated to
go beyond its own records. Equitable will request, from the parties so identified (and from
any parties identified by PMOG prior to Closing who have Preferential Rights or from whom a
Consent may be required), in accordance with the documents creating such rights, execution
of waivers of Preferential Rights or Consents so identified. Equitable shall have no
obligation other than to identify such Preferential Rights and Consents and to so request
such execution of waivers of Preferential Rights and Consents (including,

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without
limitation, Equitable shall have no obligation to assure that such waivers of Preferential
Rights and Consents are obtained).

     (b) With respect to Preferential Rights but not Consents, if a Person from whom a
waiver of a Preferential Right is requested refuses to give such waiver prior to Closing,
the interest in the Asset subject to such Preferential Right will be excluded from the
transaction contemplated hereby, such interest in such Asset will become an “Excluded Asset”
for all purposes hereunder (except in the case of any subsequent transfer of such interest
in such Asset to PMOG pursuant to the following sentence) and the Cash Contribution will be
adjusted downward by the value (proportionately reduced to the excluded interest) for such
interest in such Asset. If within ninety (90) days following Closing, such holder does
waive its Preferential Right, then PMOG agrees that, within five (5) days following
Equitable’s notice thereof, the Parties hereto will conduct a subsequent Closing (in
accordance with same terms hereof) for the purchase and sale of such Excluded Asset.

     (c) If (i) an Asset is subject to a Consent that prohibits the transfer of such Asset
without compliance with the provisions of such Consent, (ii) the failure to comply with or
obtain such Consent will result in a termination or other material impairment of any rights
in relation to such Asset, (iii) such Consent is not obtained or complied with prior to the
Closing and (iv) the absence of such Asset would not materially impair the operations of the
Gathering Assets (taken as a whole), then unless otherwise agreed to by PMOG and Equitable,
the Asset or portion thereof affected by such Consent will be excluded from the transactions
contemplated hereby, such Asset will become an “Excluded Asset” for all purposes hereunder
(except in the case of any subsequent transfer of such Asset to PMOG pursuant to the
following sentence), and the Cash Contribution will be adjusted downward by the agreed upon
value for such Asset. If within ninety (90) days following Closing such Consent is obtained
or otherwise complied with, then PMOG agrees that, within five (5) days following
Equitable’s notice thereof, the Parties hereto will conduct a subsequent Closing (in
accordance with the same terms hereof) for the purchase and sale of such excluded Asset.

     (d) To the extent that the consent of PMOG with respect to the assignment of the Assets
contemplated hereby is required under any agreement or arrangement, as of the Closing, PMOG
hereby irrevocably grants such consent.

     Section 3.5 Casualty or Condemnation Loss. Subject to the provisions of Section 8.1(e) and
Section 8.2(f) hereof, if, after the date of this Agreement but prior to the Closing Date, any
portion of the Assets is destroyed by fire or other casualty or is taken in condemnation or under
right of eminent domain, PMOG and the Company shall nevertheless be required to close and the
Parties mutually shall elect prior to Closing one of the following options: (i) to have Equitable
cause the Assets affected by any casualty to be repaired or restored, at Equitable’s sole cost, as
promptly as reasonably practicable (which work may extend after the Closing Date), (ii) to have
Equitable indemnify the Company, PMOG, and their respective Affiliates through a document
reasonably acceptable to Equitable and PMOG against any costs or expenses that such

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Person
reasonably incurs to repair the Assets subject to any casualty or (iii) to treat such casualty or
taking as an Asserted Title Defect with respect to the affected Assets under Section 3.3; provided
that in no event shall such Asserted Title Defect be subject to the provisions of Section
3.3(e)(iv) hereof. In each case, Equitable shall retain all rights to insurance and other claims
against third parties with respect to the casualty or taking except to the extent Equitable and
PMOG otherwise agree in writing.

ARTICLE 4

REPRESENTATIONS AND WARRANTIES OF EQUITABLE

     Section 4.1 Disclaimers.

     (a) Except as expressly set forth in Article 3, Article 4, Article 6, in the
certificates delivered by Equitable at Closing pursuant to Section 9.2(b) and Section 9.2(c)
or in the Conveyance, (i) Equitable makes no representations or warranties, express or
implied, with respect to the Assets or the transactions contemplated hereby and (ii)
Equitable expressly disclaims all liability and responsibility for any representation,
warranty, statement or information with respect to the Assets or the transactions
contemplated hereby made or communicated (orally or in writing) to PMOG or any of its
Affiliates, employees, agents, consultants or representatives (including any opinion,
information, projection or advice that may have been provided to PMOG by any officer,
director, employee, agent, consultant, representative or advisor of Equitable or any of its
Affiliates).

     (b) EXCEPT AS EXPRESSLY REPRESENTED OTHERWISE IN ARTICLE 3, ARTICLE 4, ARTICLE 6, IN
THE CERTIFICATES DELIVERED BY EQUITABLE AT CLOSING PURSUANT TO SECTIONS 9.2(b) AND 9.2(c) OR
IN THE CONVEYANCE, WITHOUT LIMITING THE GENERALITY OF THE FOREGOING, EQUITABLE EXPRESSLY
DISCLAIMS ANY REPRESENTATION OR WARRANTY, EXPRESS OR IMPLIED, AS TO (I) TITLE TO ANY OF THE
ASSETS, (II) ANY ESTIMATES OF THE VALUE OF THE ASSETS OR FUTURE REVENUES
GENERATED BY THE ASSETS, (III) THE MAINTENANCE, REPAIR, CONDITION, QUALITY,
SUITABILITY, DESIGN OR MARKETABILITY OF THE ASSETS, OR (IV) ANY OTHER MATERIALS OR
INFORMATION THAT MAY HAVE BEEN MADE AVAILABLE OR COMMUNICATED TO PMOG OR THE COMPANY OR
THEIR RESPECTIVE AFFILIATES, OR THEIR RESPECTIVE EMPLOYEES, AGENTS, CONSULTANTS,
REPRESENTATIVES OR ADVISORS IN CONNECTION WITH THE TRANSACTIONS CONTEMPLATED BY THIS
AGREEMENT OR ANY DISCUSSION OR PRESENTATION RELATING THERETO, AND FURTHER DISCLAIMS ANY
REPRESENTATION OR WARRANTY, EXPRESS OR IMPLIED, OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
PURPOSE OR CONFORMITY TO MODELS OR SAMPLES OF MATERIALS OF ANY EQUIPMENT, IT BEING EXPRESSLY
UNDERSTOOD AND AGREED BY THE PARTIES HERETO THAT, SUBJECT TO THE REPRESENTATIONS AND
WARRANTIES SET FORTH IN ARTICLE 3, ARTICLE

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4, ARTICLE 6, IN THE CERTIFICATES DELIVERED BY
EQUITABLE AT CLOSING PURSUANT TO SECTIONS 9.2(b) AND 9.2(c) AND IN THE CONVEYANCE, PMOG AND
THE COMPANY HAVE MADE OR CAUSED TO BE MADE SUCH INSPECTIONS AS PMOG AND THE COMPANY DEEM
APPROPRIATE, THE COMPANY IS RECEIVING THE ASSETS, EQUIPMENT AND ALL OTHER TANGIBLE PROPERTY
IN ITS PRESENT STATUS, CONDITION AND STATE OF REPAIR, “AS IS” AND “WHERE IS” WITH ALL
FAULTS.

     (c) Any representation “to the knowledge of Equitable” or “to Equitable’s knowledge” is
limited to matters within the actual conscious awareness of Ted O’Brien, Lester Zitkus, Andy
Murphy, Shawn Posey, John Centofanti, Chris Akers, Matt Ankrum and Phil Elliott.

     (d) Inclusion of a matter on a schedule attached hereto with respect to a
representation or warranty that addresses matters having a Material Adverse Effect shall not
be deemed an indication that such matter does, or may, have a Material Adverse Effect.
Matters may be disclosed on a schedule for purposes of information only. As used herein,
“Material Adverse Effect” means any change, inaccuracy, circumstance, event, result,
occurrence, condition or an act (each, an “Event”) that has had or could reasonably be
expected to have a material adverse effect on the ownership, operation or value of the
Assets, taken as a whole or the ability of Equitable or PMOG, as applicable, to consummate
the transactions contemplated hereby or meet its obligations under this Agreement and the
documents to be executed hereunder; provided, however, that “Material Adverse Effect” shall
not include Events resulting from general changes in Hydrocarbon prices; general changes in
the Hydrocarbon exploration and production industry or general economic or political
conditions; civil unrest, insurrection or similar disorders; or changes in Laws.

     (e) Subject to the foregoing provisions of this Section 4.1 and the other terms and
conditions of this Agreement, Equitable represents and warrants to PMOG and the Company the
matters set out in the remainder of this Article 4.

     Section 4.2 EPC.

     (a) Existence and Qualification. EPC is a corporation duly organized, validly
existing and in good standing under the laws of the Commonwealth of Pennsylvania and is duly
qualified to do business as a foreign corporation in the Commonwealth of Virginia.

     (b) Power. EPC has the corporate power to enter into and perform this
Agreement (and all documents required to be executed and delivered by EPC at Closing) and to
consummate the transactions contemplated by this Agreement (and such documents).

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     (c) Authorization and Enforceability. The execution, delivery and performance
of this Agreement by EPC (and all documents required to be executed and delivered by EPC at
Closing) and the consummation of the transactions contemplated hereby and thereby, have been
duly and validly authorized by all necessary corporate action on the part of EPC. This
Agreement has been duly executed and delivered by EPC (and all documents required to be
executed and delivered by EPC at Closing shall be duly executed and delivered by EPC) and
this Agreement constitutes (and at the Closing such documents shall constitute) the valid
and binding obligations of EPC, enforceable in accordance with their terms except as such
enforceability may be limited by applicable bankruptcy or other similar Laws affecting the
rights and remedies of creditors generally, as well as to general principles of equity
(regardless of whether such enforceability is considered in a proceeding in equity or at
Law).

     (d) No Conflicts. The execution, delivery and performance of this Agreement by
EPC (and all documents required to be executed and delivered by EPC at Closing), and the
consummation of the transactions contemplated by this Agreement (and by such documents)
shall not (i) violate any provision of the certificate of incorporation or bylaws of EPC,
(ii) result in default (with due notice or lapse of time or both) or the creation of any
lien or encumbrance or give rise to any right of termination, cancellation or acceleration
under any note, bond, mortgage, indenture, license or agreement to which EPC is a party or
by which it is bound, (iii) violate any judgment, order, ruling, or decree applicable to EPC
as a party in interest, or (iv) violate any Laws applicable to EPC or any of the Assets,
except any matters described in clauses (ii), (iii), or (iv) above which would not have a
Material Adverse Effect or as set forth on Schedule 4.2(d) and except for compliance with
the HSR Act.

     Section 4.3 EGEL.

     (a) Existence and Qualification. EGEL is a limited liability company duly
organized, and validly existing under the laws of the State of Delaware and is duly
qualified to do business as a foreign limited liability company in the Commonwealth of
Virginia.

     (b) Power. EGEL has the limited liability company power to enter into and
perform this Agreement (and all documents required to be executed and delivered by EGEL at
Closing) and to consummate the transactions contemplated by this Agreement (and such
documents).

     (c) Authorization and Enforceability. The execution, delivery and performance
of this Agreement by EGEL (and all documents required to be executed and delivered by EGEL
at Closing) and the consummation of the transactions contemplated hereby and thereby, have
been duly and validly authorized by all necessary limited liability company action on the
part of EGEL. This Agreement has been duly executed and delivered by EGEL (and all
documents required to be executed and delivered by EGEL at Closing shall be duly executed
and delivered by EGEL) and this Agreement constitutes (and at

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the Closing such documents
shall constitute) the valid and binding obligations of EGEL, enforceable in accordance with
their terms except as such enforceability may be limited by applicable bankruptcy or other
similar Laws affecting the rights and remedies of creditors generally, as well as to general
principles of equity (regardless of whether such enforceability is considered in a
proceeding in equity or at Law).

     (d) No Conflicts. The execution, delivery and performance of this Agreement by
EGEL (and all documents required to be executed and delivered by EGEL at Closing), and the
consummation of the transactions contemplated by this Agreement (and by such documents)
shall not (i) violate any provision of the certificate of formation or limited liability
company agreement of EGEL, (ii) result in default (with due notice or lapse of time or both)
or the creation of any lien or encumbrance or give rise to any right of termination,
cancellation or acceleration under any note, bond, mortgage, indenture, license or agreement
to which EGEL is a party or by which it is bound, (iii) violate any judgment, order, ruling,
or decree applicable to EGEL as a party in interest, or (iv) violate any Laws applicable to
EGEL or any of the Assets, except any matters described in clauses (ii), (iii), or (iv)
above which would not have a Material Adverse Effect or as set forth on Schedule 4.3(d) and
except for compliance with the HSR Act.

     Section 4.4 Liability for Brokers’ Fees. Neither PMOG nor the Company shall directly or
indirectly have any responsibility, liability or expense, as a result of undertakings or agreements
of Equitable or its Affiliates, for brokerage fees, finder’s fees, agent’s commissions or other
similar forms of compensation to an intermediary in connection with the negotiation, execution or
delivery of this Agreement or any agreement or transaction contemplated hereby.

     Section 4.5 Consents, Approvals or Waivers. Except (a) for preferential rights
(collectively “Preferential Rights”) to purchase and other provisions restricting assignment
without consent (“Consents”) which would be applicable to the transactions contemplated hereby that
are set forth on Schedule 4.5 (the “Scheduled Transfer
Requirements”), (b) as would not, individually or in the aggregate, have a Material Adverse Effect,
(c) for approvals customarily obtained from a Governmental Authority post-Closing, and (d) for
compliance with the HSR Act, neither the execution and delivery of this Agreement (nor any
documents required to be executed by Equitable at Closing), nor the consummation of the
transactions contemplated hereby nor thereby, nor the compliance with the terms hereof nor thereof,
(in each case) by Equitable will (i) conflict with or result in a violation of any provision of, or
constitute (with or without the giving of notice or the passage of time or both) a default under,
or give rise to (with or without the giving of notice or the passage of time or both) any right of
termination, cancellation, or acceleration under, any bond, debenture, note, mortgage or indenture,
or any lease, contract, agreement, or other instrument or obligation to which Equitable is a party
or by which Equitable or any of the Assets may be bound or (ii) violate any applicable Law binding
upon Equitable or the Assets. Except (x) for the Scheduled Transfer Requirements (y) for approvals
customarily obtained from a Governmental Authority post-Closing, and (z) for compliance with the
HSR Act, the execution of this Agreement by Equitable and the consummation of the transactions
contemplated hereby by Equitable will not require any

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material consent, approval or waiver of any
Governmental Authority or other third Person, or create a right in favor of any Person to purchase
all or any material part of the Assets.

     Section 4.6 Litigation. Except as disclosed on Schedule 4.6A or Schedule 4.6B and except
for the Party Lawsuit, there are no actions, suits or proceedings pending, or to Equitable’s
knowledge, threatened in writing, by or before any Governmental Authority or arbitrator with
respect to the Assets or Equitable’s or any of its Affiliates’ ownership, operation or use thereof.
To Equitable’s knowledge, no written notice from any third Person (including any Governmental
Authority) claiming material Damages or any material breach of duty of care has been received by
Equitable or any of its Affiliates relating to the Assets or Equitable’s or any of its Affiliate’s
ownership, operation or use thereof, except for the suits, actions and proceedings set forth in
Schedule 4.6A or Schedule 4.6B and the Party Lawsuit.

     Section 4.7 Taxes. Except as disclosed on Schedule 4.7: (i) all material Tax Returns
required to be filed with respect to the Assets have been duly and timely filed; (ii) each such Tax
Return is in all material respects true, correct and complete; (iii) all material Taxes owed with
respect to the Assets have been timely paid in full; (iv) there are no Encumbrances for Taxes on
any of the Assets other than Permitted Encumbrances; (v) there is no outstanding dispute or claim
concerning any material Taxes with respect to the Assets, and to Equitable’s knowledge no
assessment, deficiency or adjustment has been asserted or proposed with respect thereto; and (vi)
to Equitable’s knowledge, all of the Assets have been properly listed and described on the property
tax rolls for the taxing units in which such Assets are located and no portion of the Assets
constitutes omitted property for property tax purposes.

     Section 4.8 Environmental Laws. To Equitable’s knowledge, Equitable and its Affiliates
have complied in all respects with, and the operation of the Assets has been in compliance in all
respects with, all applicable Laws relating to the environment (“Environmental Laws”), except such
failures to comply as,
individually or in the aggregate, would not have a Material Adverse Effect. Except for
contamination that would not, individually or in the aggregate, have a Material Adverse Effect, to
Equitable’s knowledge there has been no contamination of groundwater, surface water or soil
resulting from activities relating to the Assets, which requires remediation under applicable
Environmental Laws.

     Section 4.9 Compliance with Laws. Except with respect to Environmental Laws, which are
addressed in Section 4.8, and except as disclosed on Schedule 4.9, to Equitable’s knowledge,
Equitable and its Affiliates have complied in all respects with, and the Assets have been operated
and maintained in compliance in all respects with, all applicable Laws, except such failures to
comply as would not, individually or in the aggregate, have a Material Adverse Effect.

     Section 4.10 Contracts. Neither Equitable, nor to the knowledge of Equitable, any other
Person is in default under any Contract, except as disclosed on Schedule 4.10 and except for such
defaults as would not, individually or in the aggregate, have a Material Adverse Effect. Except as
disclosed on Schedule 4.10, there are (a) no gathering agreements with third Persons

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for
Hydrocarbons to be transported on the Gathering Assets or (b) material contracts or other material
agreements included in or directly related to the operation of or title to the Assets.

     Section 4.11 Permits, etc.. To Equitable’s knowledge, except as disclosed on Schedule
4.11, Equitable has obtained and is maintaining all material federal, state and local governmental
licenses, permits, franchises, orders, exemptions, variances, waivers, authorizations,
certificates, consents, rights, privileges and applications therefor (the “Governmental Permits”)
that are presently necessary or required for the ownership and operation of the Assets as currently
owned and operated. To Equitable’s knowledge, except as disclosed in Schedule 4.11, (a) the Assets
have been operated in all material respects in accordance with the conditions and provisions of
such Governmental Permits, and (b) no written notices of material violation of such Governmental
Permits have been received by Equitable or its Affiliates.

     Section 4.12 Outstanding Capital Commitments. As of the date hereof, Equitable has made no
commitments to third Persons to make capital expenditures which are binding on the Assets or the
owner thereof and which Equitable reasonably anticipates will individually require expenditures by
the owner of the Assets after the Effective Time other than those reflected in the capital budget
included as Schedule 4.12.

     Section 4.13 Abandonment. Since the Effective Time through the date of this Agreement,
Equitable has not abandoned, and is not in the process of abandoning, any physical Assets (nor has
it removed, nor is it in the process of removing, any material items of personal property located
upon the Assets, except those replaced by items of substantially equivalent suitability and value).
Except as set forth in Schedule 4.13 or as otherwise would not have a Material Adverse Effect,
there are no pipelines
or gathering facilities located on the real property included in the Assets that Equitable is
currently required by Law or by Contract to remove or abandon.

     Section 4.14 Condition of Equipment, etc. Except as set forth in Schedule 4.14, to the
knowledge of Equitable, all pipelines, fixtures, facilities and equipment included in the Assets
have been maintained in all material respects in a state of adequate repair consistent with
industry standards in the Appalachian Basin and are otherwise generally adequate for the normal
operation thereof.

     Section 4.15 Payments of Property Costs. All Property Costs and other payments due in
connection with the ownership and operation of the Assets have been properly and correctly paid for
in all material respects by Equitable.

     Section 4.16 Absence of Certain Events. Except as disclosed on Schedule 4.16 or as
contemplated by this Agreement, since the Effective Time, there has not been any damage,
destruction or loss, whether covered by insurance or not, with respect to the Assets that has had
or is reasonably likely to have a Material Adverse Effect.

     Section 4.17 Regulatory Matters. To Equitable’s knowledge, no consent is required in
connection with the transaction contemplated hereby under the Natural Gas Policy Act of 1978,

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as
amended for which the failure to obtain such consent would be reasonably expected to have a
Material Adverse Effect. Equitable is not and the Company will not be a natural gas company within
the jurisdiction of the Natural Gas Act of 1938 (assuming that the fact that PMOG will be a member
of the Company will not cause the Company to be a natural gas company within the jurisdiction of
the Natural Gas Act of 1938).

     Section 4.18 Information. To Equitable’s knowledge, Equitable has complied in all material
respects with PMOG’s requests for supporting documentation and information relating to the
transactions contemplated by this Agreement to the extent Equitable has such documentation or
information in Equitable’s or its Affiliates’ possession or control.

     Section 4.19 Sole Member. EGEL is the sole member of the Company prior to the issuance of
membership interests therein to PMOG and EGEL pursuant to the terms hereof. The Company currently
has no assets or liabilities.

ARTICLE 5

REPRESENTATIONS AND WARRANTIES OF PMOG

     PMOG represents and warrants to Equitable and the Company the following:

     Section 5.1 Existence and Qualification. PMOG is a corporation organized, validly existing
and in good standing under the Laws of the Commonwealth of Virginia.

     Section 5.2 Power. PMOG has the corporate power to enter into and perform this Agreement
(and all documents required to be executed and delivered by PMOG at Closing) and to consummate the
transactions contemplated by this Agreement (and such documents).

     Section 5.3 Authorization and Enforceability. The execution, delivery and performance of
this Agreement by PMOG (and all documents required to be executed and delivered by PMOG at
Closing), and the consummation of the transactions contemplated hereby and thereby, have been duly
and validly authorized by all necessary corporate action on the part of PMOG. This Agreement has
been duly executed and delivered by PMOG (and all documents required to be executed and delivered
by PMOG at Closing will be duly executed and delivered by PMOG) and this Agreement constitutes (and
at the Closing such documents will constitute) the valid and binding obligations of PMOG,
enforceable in accordance with their terms except as such enforceability may be limited by
applicable bankruptcy or other similar Laws affecting the rights and remedies of creditors
generally, as well as to general principles of equity (regardless of whether such enforceability is
considered in a proceeding in equity or at Law).

     Section 5.4 No Conflicts. The execution, delivery and performance of this Agreement by
PMOG (and all documents required to be executed and delivered by PMOG at Closing), and the
consummation of the transactions contemplated by this Agreement (and by such documents) will not
(a) violate any provision of the certificate of incorporation or bylaws of PMOG, (b) result in a
default (with due notice or lapse of time or both) or the creation of any lien or encumbrance or
give rise to any right of termination, cancellation or acceleration under any note, bond, mortgage,
indenture, license or agreement to which PMOG is a party or by which it is

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bound, (c) violate any
judgment, order, ruling, or regulation applicable to PMOG as a party in interest, or (d) violate
any Law applicable to PMOG or any of its assets, except any matters described in clauses (b), (c)
or (d) above which would not have a material adverse effect on PMOG’s ability to consummate the
transactions contemplated hereby and except for compliance with the HSR Act.

     Section 5.5 Liability for Brokers’ Fees. Neither Equitable nor the Company shall directly
or indirectly have any responsibility, liability or expense, as a result of undertakings or
agreements of PMOG or its Affiliates, for brokerage fees, finder’s fees, agent’s commissions or
other similar forms of compensation to an intermediary in connection with the negotiation,
execution or delivery of this Agreement or any agreement or transaction contemplated hereby.

     Section 5.6 Consents, Approvals or Waivers. Except for compliance with the HSR Act,
neither the execution and delivery of this Agreement (nor any documents required to be executed by
PMOG at Closing), nor the consummation of the transactions contemplated hereby nor thereby, nor the
compliance with the terms hereof nor
thereof (in each case, by PMOG), will (a) be subject to obtaining any consent, approval, or waiver
from any Governmental Authority or other third Person, or (b) except as would not, individually or
in the aggregate, have a material adverse effect on PMOG’s ability to consummate the transactions
contemplated hereby, violate any applicable Law binding upon PMOG.

     Section 5.7 Litigation. Except for the Party Lawsuit, there are no actions, suits or
proceedings pending, or to PMOG’s knowledge, threatened in writing by or before any Governmental
Authority or arbitrator against PMOG which are reasonably likely to impair PMOG’s ability to
consummate the transactions contemplated hereby.

     Section 5.8 Financing. PMOG has sufficient cash, available lines of credit or other
sources of immediately available funds (in United States dollars) to enable it to pay the Cash
Contribution to the Company at the Closing.

     Section 5.9 Independent Investigation. Subject to Equitable’s and the Company’s
representations and warranties set forth in Article 3, Article 4 and Article 6 hereof (or in any
certificate furnished or to be furnished by PMOG or the Company pursuant to this Agreement) and in
the Conveyance, PMOG acknowledges and affirms that it has made (or will make prior to Closing) all
such reviews and inspections of the Assets as PMOG has deemed necessary or appropriate. Except for
the representations and warranties expressly made by Equitable or the Company in Articles 3,
Article 4 and Article 6 of this Agreement (or in any certificate furnished or to be furnished to
PMOG or the Company pursuant to this Agreement) and in the Conveyance, PMOG acknowledges that there
are no representations or warranties, express or implied, as to the Assets or prospects thereof,
and that in making its decision to enter into this Agreement and to consummate the transactions
contemplated hereby, PMOG has relied solely upon its own independent investigation, verification,
analysis and evaluation.

     Section 5.10 Equitable Information. To the knowledge of the officers of PMOG, as of the
execution date of this Agreement, Equitable has complied in all material respects with

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PMOG’s
requests for supporting documentation and information relating to the transactions contemplated by
this Agreement.

ARTICLE 6

REPRESENTATIONS AND WARRANTIES OF THE COMPANY

     The Company represents and warrants to PMOG the following:

     Section 6.1 Existence and Qualification. The Company is a limited liability company
organized and validly existing under the Laws of the State of Delaware; and the Company is duly
qualified to do business as a foreign corporation in the Commonwealth of Virginia.

     Section 6.2 Valid Issuance. The offer and sale of the membership interests in the Company
to EGEL and PMOG has been duly authorized by the Company and, when issued and delivered to EGEL and
PMOG in accordance with the terms of this Agreement, will be validly issued in accordance with the
limited liability company agreement of the Company, fully paid (to the extent required under the
limited liability company agreement of the Company) and nonassessable, will not be subject to
preemptive or similar rights and will be free of any and all liens other than any arising under
applicable state and federal securities Laws.

     Section 6.3 Power. The Company has the limited liability company power to enter into and
perform this Agreement (and all documents required to be executed and delivered by the Company at
Closing) and to consummate the transactions contemplated by this Agreement (and such documents).

     Section 6.4 Authorization and Enforceability. The execution, delivery and performance of
this Agreement by the Company (and all documents required to be executed and delivered by the
Company at Closing), and the consummation of the transactions contemplated hereby and thereby, have
been duly and validly authorized by all necessary limited liability company action on the part of
the Company. This Agreement has been duly executed and delivered by the Company (and all documents
required to be executed and delivered by the Company at Closing will be duly executed and delivered
by the Company) and this Agreement constitutes (and at the Closing such documents will constitute)
the valid and binding obligations of the Company, enforceable in accordance with their terms except
as such enforceability may be limited by applicable bankruptcy or other similar Laws affecting the
rights and remedies of creditors generally, as well as to general principles of equity (regardless
of whether such enforceability is considered in a proceeding in equity or at Law).

     Section 6.5 No Conflicts. The execution, delivery and performance of this Agreement by the
Company (and all documents required to be executed and delivered by the Company at Closing), and
the consummation of the transactions contemplated by this Agreement (and by such documents) will
not (a) violate any provision of the certificate of formation or limited liability company
agreement of the Company, (b) result in a default (with due notice or lapse of time or both) or the
creation of any lien or encumbrance or give rise to any right of termination, cancellation or
acceleration under any note, bond, mortgage, indenture, license or agreement to

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which the Company
is a party or by which it is bound, (c) violate any judgment, order, ruling, or regulation
applicable to PMOG as a party in interest, or (d) violate any Law applicable to the Company or any
of its assets, except any matters described in clauses (b), (c) or (d) above which would not have a
material adverse effect on the Company’s ability to consummate the transactions contemplated hereby
and except for compliance with the HSR Act.

     Section 6.6 Consents, Approvals or Waivers. Except for compliance with the HSR Act,
neither the execution and delivery of this Agreement (nor any documents required to be executed by
the Company at Closing), nor the consummation
of the transactions contemplated hereby nor thereby, nor the compliance with the terms hereof nor
thereof (in each case, by the Company), will (a) be subject to obtaining any consent, approval, or
waiver from any Governmental Authority or other third Person, or (b) except as would not,
individually or in the aggregate, have a material adverse effect on the Company’s ability to
consummate the transactions contemplated hereby, violate any applicable Law binding upon the
Company.

     Section 6.7 Litigation. There are no actions, suits or proceedings pending, or to the
Company’s knowledge, threatened in writing by or before any Governmental Authority or arbitrator
against the Company which are reasonably likely to impair the Company’s ability to consummate the
transactions contemplated hereby.

ARTICLE 7

COVENANTS OF THE PARTIES

     Section 7.1 Access. Equitable will give PMOG and its representatives access to the Assets
and access to and the right to copy, at PMOG’s expense, the Records in Equitable’s possession, for
the purpose of conducting an investigation of the Assets and the Company, but only to the extent
that Equitable may do so without violating any obligations to any third Person; provided that
Equitable shall use its commercially reasonable efforts to obtain all consents and waivers from
such third Persons if necessary to permit PMOG’s access to the Assets and Records. Such access by
PMOG shall be limited to Equitable’s normal business hours, and PMOG’s investigation shall be
conducted in a manner that minimizes interference with the operation of the Assets. PMOG at its
option may conduct a Phase I environmental audit of any or all of the Assets, to the extent
Equitable has authority to permit such an audit, provided that neither PMOG nor its representatives
shall conduct any testing or sampling on or with respect to the Assets prior to Closing.

     Section 7.2 Indemnity Regarding Access. PMOG agrees to indemnify, defend and hold harmless
Equitable, its Affiliates, the other owners of interests in the Assets (other than PMOG or its
Affiliates), and all such Persons’ directors, officers, employees, agents and representatives from
and against any and all Damages directly attributable to access to the Assets prior to the Closing
by PMOG, its Affiliates, or its or their directors, officers, employees, agents or representatives
in connection with PMOG’s due diligence activities with respect to the transactions contemplated
hereby, even if caused in whole or in part by the negligence (whether sole, joint or concurrent),
strict liability or other legal fault of any Indemnified

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Person but excluding any Damages to the
extent caused by the gross negligence or willful misconduct of any Indemnified Person.

     Section 7.3 Pre-Closing Notifications. Until the Closing,

     (a) PMOG shall notify Equitable promptly after any officer of PMOG obtains actual
knowledge that (i) any representation or warranty of Equitable contained in this Agreement
is untrue in any material respect or will be untrue in any material respect as of the
Closing Date or (ii) any covenant or agreement to be performed or observed by Equitable
prior to or on the Closing Date has not been so performed or observed in any material
respect.

     (b) Equitable shall notify PMOG promptly after any officer of Equitable obtains actual
knowledge that (i) any representation or warranty of PMOG contained in this Agreement is
untrue in any material respect or will be untrue in any material respect as of the Closing
Date or (ii) any covenant or agreement to be performed or observed by PMOG prior to or on
the Closing Date has not been so performed or observed in a material respect.

If any of PMOG’s or Equitable’s representations or warranties are untrue or shall become untrue in
any material respect between the date of execution of this Agreement and the Closing Date, or if
any of PMOG’s or Equitable’s covenants or agreements to be performed or observed prior to or on the
Closing Date shall not have been so performed or observed in any material respect, but if such
breach of representation, warranty, covenant or agreement shall (if curable) be cured by the
Closing and no non-breaching Party has terminated this Agreement pursuant to Section 10.1, then
such breach shall be considered not to have occurred for all purposes of this Agreement; provided
that any costs or expenses arising out of or relating to such cure shall be borne solely by the
Party who committed the breach (notwithstanding anything to the contrary herein, including the
adjustments set forth in Section 2.2).

     Section 7.4 Confidentiality, Public Announcements. Until the Closing, the Parties shall
keep confidential and cause their Affiliates and their respective officers, directors, employees
and representatives to keep confidential all information relating to this Agreement and the Assets,
except as required by applicable Laws, administrative process or the applicable rules of any stock
exchange to which such Party or its Affiliates are subject, and except for information which is
available to the public on the date hereof or thereafter becomes available to the public other than
as a result of a breach of this Section 7.4 by such Party or any such other Person. Until the
Closing, no Party shall make any press release or other public announcement regarding the existence
of this Agreement (or any documents contemplated by this Agreement), the contents hereof or thereof
or the transactions contemplated hereby or thereby without the prior written consent of the other
Parties; provided, however, the foregoing shall not restrict disclosures by any Party (a) that are
agreed to in writing by Equitable and PMOG, (b) that are required by applicable securities or other
Laws or the applicable rules of any stock exchange having jurisdiction over the disclosing Party or
its Affiliates, or (c) to Governmental Authorities and third Persons holding Preferential Rights or
Consents that may be applicable to the

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transactions contemplated by this Agreement (or any
documents contemplated by this Agreement), as reasonably necessary to obtain waivers of such rights
or such consents. The Parties agree to negotiate a reasonable and customary post-Closing press
release. Notwithstanding the foregoing, at no time (before or after the Closing) shall either Party
or its Affiliates disclose to third Persons the specific development plans for the Company’s
operations,
except (i) with the prior written consent of the other Party, (ii) to suppliers and other Persons
bound by similar confidentiality provisions as is reasonably necessary to conduct operations of the
Company, (iii) that are required by applicable securities or other Laws or the applicable rules of
any stock exchange having jurisdiction over the disclosing Party or its Affiliates, (iv) as is
reasonably necessary to Governmental Authorities, (v) to prospective purchasers bound by similar
confidentiality provisions, (vi) to the disclosing Party’s Affiliates and such Party’s
representatives bound by similar confidentiality provisions or (vii) to the disclosing Party’s
lenders or financials advisors, or (viii) information which is available to the public on the date
hereof or thereafter becomes available to the public other than as a result of a breach of this
Section 7.4 by such Party or any such other Person; provided that the disclosing Party shall be
responsible for any breach by the parties listed under subsections (ii), (v) (vi) or (vii) above of
the confidentiality provisions set forth in this sentence.

     Section 7.5 Governmental Reviews. Equitable, PMOG and the Company shall each in a timely
manner (a) make all required filings, including filings under the Hart-Scott-Rodino Antitrust
Improvements Act of 1976, as amended (the “HSR Act”), and prepare applications to and conduct
negotiations, with each Governmental Authority as to which such filings, applications or
negotiations are necessary or appropriate in the consummation of the transactions contemplated
hereby, and (b) provide such information as any other may reasonably request in order to make such
filings, prepare such applications and conduct such negotiations. Each Party shall cooperate with
and use all reasonable efforts to assist the other with respect to such filings, applications and
negotiations. Equitable shall pay all filing costs required by the HSR Act, in connection with the
transactions contemplated hereby, including the attorneys’ fees; provided, however, that such
attorneys’ fees shall not exceed Ten Thousand Dollars (US$10,000).

     Section 7.6 Tax Matters.

     (a) Effective Time for Tax Purposes. Notwithstanding any other provision of
this Agreement, the Parties shall treat the sale of the Assets hereunder as occurring as of
the Closing for all Tax purposes.

     (b) Transfer Taxes. Equitable and the Company shall each pay any Transfer
Taxes imposed on it by Law as a result of the transactions contemplated by this Agreement,
but, notwithstanding such requirement at Law, the Company will indemnify and hold Equitable
harmless from all such Transfer Taxes. Accordingly, if Equitable is required at Law to pay
any such Transfer Taxes, the Company shall promptly reimburse Equitable for such amounts.
Equitable and the Company shall timely file their own Transfer Tax returns as required by
Law and shall notify the other Party when such filings have been made. Equitable and the
Company shall cooperate and consult with

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each other prior to filing such Transfer Tax
returns to ensure that all such returns are filed in a consistent manner.

     (c) Preparation of Tax Returns. With respect to any Tax Return covering a
taxable period ending on or before the Closing Date (a “Pre-Closing Taxable Period”) that is
required to be filed after the Closing Date with respect to the Assets, Equitable shall
cause such Tax Return to be prepared (in a manner consistent with practices followed in
prior taxable periods except as required by a change in Law or fact) and shall cause such
Tax Return to be executed and duly and timely filed with the appropriate Governmental
Authority and shall pay all Taxes shown as due on such Tax Return. With respect to any Tax
Return covering a taxable period beginning on or before the Closing Date and ending after
the Closing Date (a “Straddle Taxable Period”) that is required to be filed after the
Closing Date with respect to the Assets, the Company shall cause such Tax Return to be
prepared (in a manner consistent with practices followed in prior taxable periods except as
required by a change in Law or fact) and shall cause such Tax Return to be executed and duly
and timely filed with the appropriate Governmental Authority and, subject to Equitable’s
payment to the Company of a portion of such Tax pursuant to Section 7.6(d), shall pay all
Taxes shown as due on such Tax Return.

     (d) Liability for Taxes. Equitable shall be responsible for and indemnify the
Company against, and Equitable shall be entitled to all refunds or credits of, any Tax with
respect to the Assets that is attributable to a Pre-Closing Taxable Period or to that
portion of a Straddle Taxable Period that ends on the Closing Date. With respect to a
Straddle Taxable Period, Equitable and the Company shall determine the Tax attributable to
the portion of the Straddle Taxable Period that ends on the Closing Date by an interim
closing of the books with respect to the Assets as of the Closing Date, except for ad
valorem Taxes which shall be prorated on a daily basis to the Closing Date, and Equitable
shall pay to the Company an amount equal to the Tax so determined to be attributable to that
portion of a Straddle Taxable Period that ends on the Closing Date within five (5) days
prior to the due date for the payment of such Tax to the extent not previously paid by
Equitable. The Company shall be responsible for and indemnify Equitable against, and the
Company shall be entitled to all refunds and credits of, all Taxes with respect to the
Assets that are attributable to that portion of any Straddle Taxable Period beginning after
the Closing Date. Notwithstanding the foregoing, Equitable shall be entitled to the general
abatement of property Taxes issued by Dickenson County in the amount of one hundred thousand
dollars (US$100,000) per year for a period of five (5) years.

     (e) Tax Proceedings. With respect to any Tax for which Equitable is
responsible, Equitable shall have the right, at its sole cost and expense, to control (in
the case of a Pre-Closing Taxable Period) or participate in (in the case of a Straddle
Taxable Period) the prosecution, settlement or compromise of any proceeding involving such
Tax, including the determination of the value of property for purposes of real and personal
property ad valorem Taxes. The Company shall take such action in connection with any such
proceeding as Equitable shall reasonably request from time to time to implement the
preceding sentence, including the execution of powers of attorney. Notwithstanding the

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foregoing, neither the Company nor Equitable shall settle any proceeding with respect to any
issue that could adversely affect the other Party in a taxable period (or portion thereof)
beginning after the Closing Date without the other Party’s prior written consent,
not to be unreasonably withheld, conditioned or delayed. The Company shall give
written notice to Equitable of its receipt of any notice of any audit, examination, claim or
assessment for any Tax which could result in any such proceeding within twenty (20) days
after its receipt of such notice.

     (f) Assistance and Cooperation. Equitable shall grant to the Company (or its
designees) access at all reasonable times to all of the information, books and records
relating to the Assets within the possession of Equitable (including workpapers and
correspondence with Governmental Authorities), and shall afford the Company (or its
designees) the right (at the Company’s expense) to take extracts therefrom and to make
copies thereof, to the extent reasonably necessary to permit the Company (or its designees)
to prepare Tax Returns and to conduct negotiations with Governmental Authorities. The
Company shall grant to Equitable (or its designees) access at all reasonable times to all of
the information, books and records relating to the Assets within the possession of the
Company (including workpapers and correspondence with Governmental Authorities), and shall
afford Equitable (or its designees) the right (at Equitable’s expense) to take extracts
therefrom and to make copies thereof, to the extent reasonably necessary to permit Equitable
(or its designees) to prepare Tax Returns and to conduct negotiations with Governmental
Authorities. After the Closing Date, Equitable and the Company will preserve all
information, records or documents relating to liabilities for Taxes with respect to the
Assets until six months after the expiration of any applicable statute of limitations
(including extensions thereof) with respect to the assessment of such Taxes.

     Section 7.7 Further Assurances. After Closing, each Party agrees to take such further
actions and to execute, acknowledge and deliver all such further documents as are reasonably
requested by any other Party for carrying out the purposes of this Agreement, or of any document
delivered pursuant to this Agreement.

     Section 7.8 Assumption of Obligations. By the consummation of the transactions
contemplated by this Agreement at Closing, and without limiting the indemnification obligations of
either Party under this Agreement, from and after Closing the Company agrees to assume and pay,
perform and discharge all obligations of Equitable with respect to the Assets.

     Section 7.9 Pipeline Agreement.

     (a) Each of EPC and EGEL hereby consents and agrees to the transaction contemplated by
the Pipeline Agreement, with such consent to be effective as of the date of the Pipeline
Agreement. PMOG hereby agrees that the Pipeline Agreement does not breach or violate the
Original Lease or the Exploration Agreement.

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     (b) Upon the contribution and assignment of the Pipeline Agreement by Equitable to the
Company, each of the Parties hereby consents and agrees the Pipeline Agreement shall be
cancelled and of no further force or effect.

     Section 7.10 Operation of Assets. Except as set forth on Schedule 7.10, until the Closing,
Equitable will (a) operate the Assets and the business with respect thereto in the ordinary course,
(b) not, without the prior written consent of PMOG, which consent shall not be unreasonably
withheld, conditioned or delayed, commit to any operation, or series of related operations thereon,
requiring future capital expenditures by the Company as the owner of the Assets in excess of those
amounts reflected in the capital budget previously provided by Equitable to PMOG, or terminate,
materially amend, execute or extend any material Contracts affecting the Assets, (c) maintain
insurance coverage on the Assets in the amounts and of the types presently in force, (d) use its
commercially reasonable efforts to maintain in full force and effect all rights of way, easements
and similar real property interests, (e) maintain all material Governmental Permits affecting the
Assets, (f) not transfer, sell, hypothecate, encumber or otherwise dispose of any Assets, except
for transfers, sales or other similar dispositions of Assets, in one or more transactions, not
exceeding Five Hundred Thousand Dollars (US$500,000.00) of consideration (in any form), in the
aggregate, and (g) not commit to do any of the foregoing. PMOG’s approval of any action restricted
by this Section 7.10 shall be considered granted within ten (10) days (unless a shorter time is
reasonably required by the circumstances and such shorter time is specified in Equitable’s written
notice) of Equitable’s written notice to PMOG requesting such consent unless PMOG notifies such
Person to the contrary in writing during that period. In the event of an emergency, Equitable may
take such action as a prudent operator would take and shall notify PMOG of such action promptly
thereafter.

     Section 7.11 Financial Information. Equitable shall use its commercially reasonable
efforts to (a) assist PMOG and PMOG’s accountants, at the sole cost and expense of PMOG, in the
preparation of either (i) if relief is granted by the SEC, statements of revenues and direct
operating expenses and all notes thereto related to the Assets or (ii) if such relief is not
granted by the SEC, the financial statements required by the SEC (such financial statements set
forth in the foregoing clauses (i) and (ii), as applicable, the “Statements of Revenues and
Expenses”) in each case of clauses (i) and (ii), that will be required of PMOG or any of its
Affiliates in connection with reports, registration statements and other filings to be made by PMOG
or any of its Affiliates related to the transactions contemplated by this Agreement with the SEC
pursuant to the Securities Act, or the Exchange Act, in such form that such statements and the
notes thereto can be audited and (b) provide to PMOG access to such financial information as is
reasonably related to the preparation of the Statements of Revenues and Expenses; provided that in
no event shall Equitable be obligated to prepare or provide financial information, records or
financial statements other than those kept by it in its ordinary course of business.

     Section 7.12 Termination of Gas Gathering Agreement. Effective as of the Closing, EGEL shall terminate and shall cause its Affiliate, Equitable
Energy, LLC, to terminate (with such termination to be effective as of the Effective Time with

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respect to gas produced by any member of the Company or any of its Affiliates, and as of the
Closing with respect to gas produced by unaffiliated third parties) that certain Gas Gathering
Agreement dated as of January 1, 2005 between EGEL and Equitable Energy, LLC.

ARTICLE 8

CONDITIONS TO CLOSING

     Section 8.1 Conditions of Equitable to Closing. The obligations of Equitable to proceed to
consummate the transactions contemplated by this Agreement are subject, at the option of Equitable,
to the satisfaction on or prior to Closing of each of the following conditions:

     (a) Representations of PMOG. The representations and warranties of PMOG set
forth in Article 5 shall be true and correct (disregarding any materiality qualifiers) as of
the date of this Agreement and as of the Closing Date as though made on and as of the
Closing Date (other than representations and warranties that refer to a specified date,
which need only be true and correct, disregarding any materiality qualifiers, on and as of
such specified date), except for such breaches, if any, that in the aggregate would not have
a Material Adverse Effect;

     (b) Performance. PMOG shall have performed and observed, in all material
respects, all covenants and agreements to be performed or observed by it under this
Agreement prior to or on the Closing Date and all deliveries contemplated by Section 9.3
shall have been made (or PMOG shall be ready, willing and able to immediately make such
deliveries);

     (c) Working Interest Purchase. The transactions contemplated by the Purchase
Agreement shall have closed (or PMOG shall be ready, willing and able to simultaneously
close such transactions with the transactions contemplated hereby);

     (d) No Action. On the Closing Date, no suit, action, or other proceeding
(excluding any such matter initiated by a Equitable or any of its Affiliates) shall be
pending or threatened before any Governmental Authority or body of competent jurisdiction
seeking to enjoin or restrain the consummation of the transactions contemplated by this
Agreement or recover substantial damages from Equitable or any Affiliate of Equitable
resulting therefrom;

     (e) Asserted Title Defects/Casualties. The sum of all Asserted Title Defect
Amounts for Asserted Title Defects properly reported under Section 3.3(a), plus the Damages
resulting from any casualty loss occurring on or after the date hereof to all or any portion
of the Assets, shall be less than ten percent (10%) of the unadjusted Cash Contribution; and

     (f) HSR Act. The necessary waiting period applicable to the consummation of
the transactions contemplated hereby under the HSR Act shall have expired, or early
termination of the waiting period shall have been granted.

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     Section 8.2 Conditions of PMOG to Closing. The obligations of PMOG to consummate the
transactions contemplated by this Agreement are subject, at the option of PMOG, to the satisfaction
on or prior to Closing of each of the following conditions:

     (a) Representations of Equitable. The representations and warranties of
Equitable set forth in Article 4 shall be true and correct (disregarding any materiality
qualifiers, including Material Adverse Effect) as of the date of this Agreement and as of
the Closing Date as though made on and as of the Closing Date (other than representations
and warranties that refer to a specified date, which need only be true and correct,
disregarding any materiality qualifiers, including Material Adverse Effect, on and as of
such specified date), except for such breaches, if any, that in the aggregate would not have
a Material Adverse Effect;

     (b) Representations of the Company. The representations and warranties of
Company set forth in Article 6 shall be true and correct (disregarding any materiality
qualifiers, including Material Adverse Effect) as of the date of this Agreement and as of
the Closing Date as though made on and as of the Closing Date (other than representations
and warranties that refer to a specified date, which need only be true and correct,
disregarding any materiality qualifiers, including Material Adverse Effect, on and as of
such specified date), except for such breaches, if any, that in the aggregate would not have
a Material Adverse Effect;

     (c) Performance. Equitable and the Company shall have performed and observed,
in all material respects, all covenants and agreements to be performed or observed by such
Party under this Agreement prior to or on the Closing Date and all deliveries by such
Parties contemplated by Section 9.2 and Section 9.4 shall have been made (or such Parties
shall be ready, willing and able to immediately make such deliveries);

     (d) Working Interest Purchase. The transactions contemplated by the Purchase
Agreement shall have closed (or EPC shall be ready, willing and able to simultaneously close
such transactions with the transactions contemplated hereby);

     (e) No Action. On the Closing Date, no suit, action, or other proceeding
(excluding any such matter initiated by PMOG or any of its Affiliates) shall be pending or
threatened before any Governmental Authority or body of competent jurisdiction seeking to
enjoin or restrain the consummation of the transactions contemplated by this Agreement or
recover substantial damages from PMOG or any Affiliate of PMOG resulting therefrom;

     (f) Asserted Title Defects/Casualties. The sum of all Asserted Title Defect
Amounts for Asserted Title Defects properly reported under Section 3.3(a), plus the Damages
resulting from any casualty loss occurring on or after the date hereof to all or any portion
of the Assets, shall be less than ten percent (10%) of the unadjusted Cash Contribution; and

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     (g) HSR Act. The necessary waiting period applicable to the consummation of
the transactions contemplated hereby under the HSR Act shall have expired, or early
termination of the waiting period shall have been granted.

ARTICLE 9

CLOSING

     Section 9.1 Time and Place of Closing. The consummation of the transactions contemplated
by this Agreement (the “Closing”) shall, (i) unless otherwise agreed to in writing by PMOG and
Equitable or otherwise provided in this Agreement, take place at the offices of Equitable located
at 225 North Shore Drive, Pittsburgh, Pennsylvania 15212, at 10:00 a.m., local time, on May 4,
2007, or (ii) if all conditions in Article 8 to be satisfied prior to Closing have not yet been
satisfied or waived, as soon thereafter as such conditions have been satisfied or waived, subject
to the provisions of Article 10. For the avoidance of doubt, each Closing subsequent to the
initial Closing pursuant to Section 3.4 shall constitute a Closing for purposes of this Agreement
and, as such, the conditions to Closing set forth in Section 8.1 and Section 8.2, the actions
required at Closing by Section 9.2 and Section 9.3, and the adjustments required by Section 2.2
shall apply with respect to each such Closing. The date on which a Closing occurs is referred to
herein as the “Closing Date.”

     Section 9.2 Closing Deliveries of Equitable. At the Closing, upon the terms and subject to
the conditions of this Agreement, and subject to the simultaneous performance by PMOG of its
obligations pursuant to Section 9.3, Equitable shall deliver or cause to be delivered to PMOG and
the Company, among other things, the following:

     (a) Duly executed conveyances of the Assets to the Company in substantially the form
attached hereto as Exhibit B (the “Conveyance”), in sufficient duplicate originals to allow
recording in all appropriate jurisdictions and offices;

     (b) A certificate duly executed by an authorized officer of EPC, dated as of the
Closing, certifying on behalf of EPC that the conditions set forth in Section 8.2(a) and
Section 8.2(c) have been fulfilled;

     (c) A certificate duly executed by an authorized officer of EGEL, dated as of the
Closing, certifying (i) on behalf of EGEL that the conditions set forth in Section 8.2(a)
and Section 8.2(c) have been fulfilled and (ii) as the sole member of the Company, on behalf
of the Company, that the conditions set forth in Section 8.2(b) and Section 8.2(c) have been
fulfilled;

     (d) An amended and restated limited liability company agreement duly executed by an
authorized officer of EGEL, dated as of the Closing, in substantially the form attached
hereto as Exhibit C (the “LLC Agreement”);

     (e) A gas gathering agreement duly executed by an authorized corporate officer of
Equitable Energy LLC, dated as of the Closing, in substantially the form attached hereto as
Exhibit G (the “Gathering Agreement”);

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     (f) A gas purchase agreement duly executed by an authorized officer of EPC and an
authorized officer of Equitable Energy LLC, dated as of the Closing, in substantially the
form attached hereto as Exhibit H;

     (g) A change of control agreement duly executed by an authorized officer of each of
EPC, EGEL and PMOG, dated as of the Closing, in substantially the form attached hereto as
Exhibit L (the “Change of Control Agreement”);

     (h) A guaranty agreement duly executed by an authorized officer of EQT Investments,
LLC, dated as of the Closing, in substantially the form attached hereto as Exhibit M;

     (i) A note duly executed by an authorized officer of ET Blue Grass Company, dated as of
the Closing, in substantially the form attached hereto as Exhibit E;

     (j) An interconnection agreement duly executed by an authorized officer of EPC, dated
as of the Closing, in substantially the form attached hereto as Exhibit O; and

     (k) Resignations of all managers and officers of the Company effective as of the
Closing.

     Section 9.3 Closing Deliveries of PMOG. At the Closing, upon the terms and subject to the
conditions of this Agreement, and subject to the simultaneous performance by Equitable of its
obligations pursuant to Section 9.2 and by the Company of its obligations pursuant to Section 9.4,
PMOG shall deliver or cause to be delivered to Equitable and the Company, among other things, the
following:

     (a) A wire transfer to the Company of the Cash Contribution and the Closing Payment in
same-day funds;

     (b) A certificate duly executed by an authorized officer of PMOG, dated as of the
Closing, certifying on behalf of PMOG that the conditions set forth in Section 8.1(a) and
Section 8.1(b) have been fulfilled;

     (c) The LLC Agreement duly executed by an authorized officer of PMOG, dated as of the
Closing;

     (d) An assignment of easement agreement duly executed by an authorized officer of PMOG,
dated as of the Closing, in substantially the form attached hereto as Exhibit D (the “New
Easement Agreement”);

     (e) As assignment and bill of sale in substantially the form of Exhibit B (but with
PMOG as the assignor thereunder) assigning to the Company PMOG’s right, title and interest
(if any) in and to the gas gathering system, facilities, compressors and pipelines described
on Exhibit A-1;

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     (f) The Change of Control Agreement duly executed by an authorized officer of PMOG,
dated as of the Closing; and

     (g) A guaranty agreement duly executed by an authorized officer of Range Resources
Corporation, dated as of the Closing, in substantially the form attached hereto as Exhibit
N;

     Section 9.4 Closing Deliveries of the Company. At the Closing, upon the terms and subject
to the conditions of this Agreement, and subject to the simultaneous performance by PMOG of its
obligations pursuant to Section 9.3, the Company shall deliver or cause to be delivered to
Equitable and PMOG, among other things, the following:

     (a) The LLC Agreement duly executed by an authorized officer of the Operating Member on
behalf of the Company, dated as of the Closing;

     (b) A duly executed Conveyance and the New Easement Agreement, in sufficient duplicate
originals to allow recording in all appropriate jurisdictions and offices;

     (c) The Gathering Agreement duly executed by an authorized officer of the Operating
Member on behalf of the Company, dated as of the Closing;

     (d) The New Easement Agreement duly executed by an authorized officer of the Operating
Member on behalf of the Company, dated as of the Closing; and

     (e) An interconnection agreement duly executed by an authorized officer of the
Operating Member on behalf of the Company, dated as of the Closing, in substantially the
form attached hereto as Exhibit O.

ARTICLE 10

TERMINATION AND AMENDMENT

     Section 10.1 Termination. This Agreement may be terminated at any time prior to Closing:
(i) by the mutual prior written consent of EPC and PMOG; (ii) by either of PMOG or EPC, if the
Closing has not occurred on or before sixty (60) days after the date hereof; (the “Termination
Date”); provided, however, that the right to terminate this Agreement under this Section 10.1 shall
not be available (A) to Equitable or the Company, if any breach of this Agreement by Equitable or
the Company has
been the principal cause of, or resulted in, the failure of the Closing to occur on or before the
Termination Date, or (B) to PMOG, if any breach of this Agreement by PMOG has been the principal
cause of, or resulted in, the failure of the Closing to occur on or before the Termination Date;
(iii) by Equitable, if (A) any of the representations and warranties of PMOG contained in this
Agreement shall not be true and correct in all material respects (provided that any such
representation or warranty that is already qualified by a materiality standard or a material
adverse effect qualification shall not be further qualified); or (B) PMOG shall have failed to
fulfill in any material respect any of its obligations under this Agreement; and, in the case of
each of clauses (A) and (B) of this subsection (iii), Equitable shall have given PMOG written
notice of such misrepresentation, breach of warranty

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or failure, if curable, and such
misrepresentation, breach of warranty or failure has not been cured by the Termination Date; or
(iv) by PMOG, if (A) any of the representations and warranties of Equitable or the Company
contained in this Agreement shall not be true and correct in all material respects (provided that
any such representation or warranty that is already qualified by a materiality or Material Adverse
Effect qualification shall not be further qualified); or (B) Equitable or the Company shall have
failed to fulfill in any material respect any of its obligations under this Agreement, and, in the
case of each of clauses (A) and (B) of this subsection (iv), PMOG shall have given Equitable
written notice of such misrepresentation, breach of warranty or failure, if curable, and such
misrepresentation, breach of warranty or failure has not been cured by the Termination Date.

     Section 10.2 Effect of Termination. If this Agreement is terminated pursuant to Section
10.1, this Agreement shall become void and of no further force or effect except for the provisions
of Section 4.4, Section 5.5, Section 7.2, Section 7.4 (other than the last sentence thereof),
Section 12.8, Section 12.17, Section 12.18 and Section 12.19, which shall continue in full force
and effect. Notwithstanding anything to the contrary in this Agreement, the termination of this
Agreement under Section 10.1 shall not relieve any Party from liability for Damages resulting from
any willful or negligent breach of this Agreement by such Party in any material respect.

ARTICLE 11

INDEMNIFICATIONS; LIMITATIONS

     Section 11.1 Indemnification.

     (a) [Intentionally omitted].

     (b) From and after Closing, Equitable shall indemnify, defend and hold harmless the
Company Indemnified Persons and the PMOG Indemnified Persons against and from all Damages
incurred or suffered by any such Indemnified Person:

     (i) caused by, arising out of or resulting from the ownership, use, or
operation of the Assets before the Closing,

     (ii) caused by, arising out of or resulting from Equitable’s or the Company’s
breach of any of the covenants or agreements contained in Article 7,

     (iii) caused by, arising out of or resulting from any breach of any
representation or warranty made by Equitable or the Company contained in Article 4,
Article 6 or in the certificate delivered by Equitable at Closing pursuant to
Section 9.2(b) and Section 9.2(c),

     (iv) caused by, arising out of or resulting from the claims, suits, proceedings
and actions described in Schedule 4.6A hereto, or

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     (v) caused by, arising out of or resulting from (A) the Excluded Assets or (B)
any pipeline imbalances attributable to the Assets prior to the Closing,

except to the extent such Damages are caused in whole or in part by the negligence (whether
sole, joint, or concurrent), strict liability, or other legal fault of any Indemnified
Person. Notwithstanding the foregoing, Equitable shall not be required under this Section
11.1(b) to indemnify, defend or hold harmless the PMOG Indemnified Persons from Property
Costs accruing from and after the Effective Time and attributable to the Assets. The term
“Company Indemnified Persons” as used herein means the Company and its Affiliates and their
respective directors, officers, employees, stockholders, members, agents, consultants,
advisors and other representatives (including legal counsel, accountants and financial
advisors). The term “PMOG Indemnified Persons” as used herein means PMOG and its Affiliates
and their respective directors, officers, employees, stockholders, members, agents,
consultants, advisors and other representatives (including legal counsel, accountants and
financial advisors).

     (c) From and after Closing, PMOG shall indemnify, defend, and hold harmless the Company
Indemnified Parties and the Equitable Indemnified Parties against and from all Damages
incurred or suffered by any such Indemnified Person:

     (i) caused by, arising out of or resulting from PMOG’s breach of any of PMOG’s
covenants or agreements contained in Article 5, or

     (ii) caused by, arising out of or resulting from any breach of any
representation or warranty made by PMOG contained in Article 5 of this Agreement or
in the certificate delivered by PMOG at Closing pursuant to Section 9.3(b),

except to the extent such Damages are caused in whole or in part by the negligence (whether
sole, joint, or concurrent), strict liability, or other legal fault of any Indemnified
Person. The term “Equitable Indemnified Persons” as used herein means Equitable and its
Affiliates and their respective directors, officers, employees, stockholders, members,
agents, consultants, advisors and other representatives (including legal counsel,
accountants and financial advisors).

     (d) Notwithstanding anything to the contrary contained in this Agreement, from and
after Closing, this Section 11.1 contains the Parties’ exclusive remedy against each other
with respect to breaches of the representations, warranties, covenants and agreements of the
Parties contained in Article 4, Article 5, Article 6 and Article 7 (excluding Section 7.2),
which shall be separately enforceable by the injured party pursuant to whatever rights and
remedies are available to it outside of this Article 11) and the affirmations of such
representations, warranties, covenants and agreements contained in the certificate delivered
by each Party at Closing pursuant to Section 9.2(b), Section 9.2(c) or Section 9.3(b), as
applicable. Except for (i) the remedies contained in this Section 11.1, (ii) any other
remedies available to the Parties at Law or in equity for

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breaches of provisions of this
Agreement other than Article 4, Article 5, Article 6 and Article 7 (excluding Section 7.2)
and (iii) the remedies available in connection with any other document delivered by any
Party in connection with the transactions contemplated hereby, from and after Closing each
Party releases, remises, and forever discharges the other Parties and their respective
Affiliates and all such Persons’ stockholders, officers, directors, employees, agents,
advisors and representatives from any and all suits, legal or administrative proceedings,
claims, demands, damages, losses, costs, liabilities, interest, or causes of action
whatsoever, in Law or in equity, known or unknown, which such Parties might now or
subsequently may have, based on, relating to or arising out of this Agreement or the
consummation of the transactions contemplated hereby, except to the extent caused in whole
or in part by the negligence (whether sole, joint, or concurrent), strict liability, or
other legal fault of any released Person.

     (e) “Damages” shall mean the amount of any actual liability, loss, cost, expense,
claim, award, or judgment incurred or suffered by any Indemnified Person arising out of or
resulting from the indemnified matter, whether attributable to personal injury or death,
property damage, contract claims, torts or otherwise including reasonable fees and expenses
of attorneys, consultants, accountants, or other agents and experts reasonably incident to
matters indemnified against, and the costs of investigation and/or monitoring of such
matters, and the costs of enforcement of the indemnity; provided, however, that no Party
shall be entitled to indemnification under this Agreement for, and “Damages” shall not
include (except to the extent that such Damages are awarded to an unaffiliated third
Person) (i) loss of profits or other consequential damages suffered by the Party claiming
indemnification, or any punitive damages or (ii) in the event the Indemnified Person takes
any action that exceeds the scope of the operating authority granted to it under the LLC
Agreement, any liability, loss, cost, expense, claim, award or judgment to the extent and
only to the extent increased by such action..

     (f) The indemnity to which each Party is entitled under this Agreement shall be for the
benefit of and extend to such Indemnified Persons affiliated with such Party as described
above in this Agreement. Any claim for indemnity under this Agreement by any such
Indemnified Person (other than a Party) must be brought and administered by the applicable
Party to this Agreement. No Indemnified Person other than a Party shall have any rights
against any Party under the terms of this Section 11.1 or otherwise under this Agreement
except as may be exercised on its behalf by such Party, pursuant to this
Section 11.1(f). Each Party may elect to exercise or not exercise indemnification
rights under this Section on behalf of the other Indemnified Persons affiliated with it in
its sole discretion and shall have no liability to any such other Indemnified Person for any
action or inaction under this Agreement.

     (g) For the sole purposes of the indemnities set forth in this Section 11.1, in
determining a breach or inaccuracy of any Party’s representations or warranties and in
calculating the amount of Damages incurred, arising out of or relating to any such breach or
inaccuracy of a representation or warranty, any references to “Material Adverse Effect” or
other materiality qualifications (or correlative terms) shall be disregarded.

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     Section 11.2 Indemnification Actions. All claims for indemnification under Section 11.1
shall be asserted and resolved as follows:

     (a) For purposes of this Agreement, the term “Indemnifying Person” when used in
connection with particular Damages shall mean the Person having an obligation to indemnify
another Person or Persons with respect to such Damages pursuant to this Agreement, and the
term “Indemnified Person” when used in connection with particular Damages shall mean a
Person having the right to be indemnified with respect to such Damages pursuant to this
Agreement.

     (b) To make claim for indemnification under Section 11.1, an Indemnified Person shall
notify the Indemnifying Person of its claim, including the specific details of and specific
basis under this Agreement for its claim (the “Claim Notice”). In the event that the claim
for indemnification is based upon a claim by a third Person against the Indemnified Person
(a “Claim”), the Indemnified Person shall provide its Claim Notice promptly after the
Indemnified Person has actual knowledge of the Claim and shall enclose a copy of all papers
(if any) served with respect to the Claim; provided that the failure of any Indemnified
Person to give notice of a Claim as provided in this Section 11.2 shall not relieve the
Indemnifying Person of its obligations under Section 11.1 except to the extent (and only to
the extent of such incremental Damages incurred) such failure results in insufficient time
being available to permit the Indemnifying Person to effectively defend against the Claim or
otherwise prejudices the Indemnifying Person’s ability to defend against the Claim. In the
event that the claim for indemnification is based upon an inaccuracy or breach of a
representation, warranty, covenant, or agreement, the Claim Notice shall specify the
representation, warranty, covenant, or agreement that was inaccurate or breached.

     (c) In the case of a claim for indemnification based upon a Claim, the Indemnifying
Person shall have thirty (30) days from its receipt of the Claim Notice to notify the
Indemnified Person whether or not it agrees to indemnify and defend the Indemnified Person
against such Claim under this Article 11. The Indemnified Person is authorized, prior to
and during such thirty (30) day period, to file any motion, answer, or other pleading that
it shall deem necessary or appropriate to protect its interests or those of the Indemnifying
Person and that is not prejudicial to the Indemnifying Person.

     (d) If the Indemnifying Person agrees to indemnify the Indemnified Person, it shall
have the right and obligation to diligently defend, at its sole cost and expense, the Claim.
The Indemnifying Person shall have full control of such defense and proceedings, including
any compromise or settlement thereof. If requested by the Indemnifying Person, the
Indemnified Person agrees to cooperate in contesting any Claim, which the Indemnifying
Person elects to contest (provided, however, that the Indemnified Person shall not be
required to bring any counterclaim or cross-complaint against any Person). The Indemnified
Person may participate in, but not control, at its sole cost and expense, any defense or
settlement of any Claim controlled by the Indemnifying Person pursuant to this Section
11.2(d). An Indemnifying Person shall not, without the written consent of

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the Indemnified
Person, such consent not to be unreasonably withheld, conditioned or delayed, settle any
Claim or consent to the entry of any judgment with respect thereto that (i) does not result
in a final resolution of the Indemnified Person’s liability with respect to the Claim
(including, in the case of a settlement, an unconditional written release of the Indemnified
Person from all liability in respect of such Claim) or (ii) may materially and adversely
affect the Indemnified Person (other than as a result of money damages covered by the
indemnity).

     (e) If the Indemnifying Person does not agree to indemnify the Indemnified Person
within the thirty (30) day period specified in Section 11.2(c), fails to give notice to the
Indemnified Party within such thirty (30) day period regarding its election, or if the
Indemnifying Party agrees to indemnify, but fails to diligently defend or settle the Claim,
then the Indemnified Person shall have the right to defend against the Claim (at the sole
cost and expense of the Indemnifying Person, if the Indemnified Person is entitled to
indemnification hereunder), with counsel of the Indemnified Person’s choosing; provided,
however, that the Indemnified Party shall make no settlement, compromise, admission, or
acknowledgment that would give rise to liability on the part of any Indemnifying Party
without the prior written consent of such Indemnifying Party, which consent shall not be
unreasonably withheld, conditioned or delayed.

     (f) In the case of a claim for indemnification not based upon a Claim, the Indemnifying
Person shall have thirty (30) days from its receipt of the Claim Notice to (i) cure the
Damages complained of, (ii) agree to indemnify the Indemnified Person for such Damages, or
(iii) dispute the claim for such Damages. If such Indemnifying Person does not respond to
such Claim Notice within such thirty (30) day period, such Person will be deemed to dispute
the claim for Damages.

     Section 11.3 Limitation on Actions.

     (a) The representations and warranties of the Parties in Article 4, Article 5 and
Article 6 and the covenants and agreements of the Parties in Article 7, and the
corresponding representations and warranties given in the certificates delivered at the
Closing pursuant to Section 9.2(b), Section 9.2(c) or Section 9.3(b), as applicable, shall
survive the Closing for a period of one (1) year, except that, (i) with respect to any
taxable period, the representations, warranties, covenants and agreements contained in
Section 4.7 and Section 7.6 shall survive until the applicable statute of limitations closes
such taxable period and (ii) the provisions of Section 4.4, Section 5.5 and the last
sentence in Section 7.4 shall survive the Closing without time limit. The remainder of this
Agreement shall survive the Closing without time limit, except as provided in Section
11.3(b) below. Representations, warranties, covenants, and agreements shall be of no
further force and effect after the date of their expiration (if any), provided that there
shall be no termination of any bona fide claim asserted pursuant to this Agreement with
respect to such a representation, warranty, covenant, or agreement prior to its expiration
date.

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     (b) The indemnities in Section 11.1(b)(ii), Section 11.1(b)(iii), Section 11.1(c)(i)
and Section 11.1(c)(ii) shall terminate as of the termination date of each respective
representation, warranty, covenant or agreement that is subject to indemnification, except
(in each case) as to matters for which a specific written claim for indemnity has been
delivered to the Indemnifying Person on or before such termination date. The indemnities in
Section 11.1(b)(i) shall terminate on the date which is three (3) years from the Closing
Date except (in each case) as to matters for which a specific written claim for indemnity
has been delivered to the Indemnifying Person on or before such termination date.

     (c) Except for claims relating to a breach of a Party’s obligations under Section 4.4,
Section 4.7, Section 5.5, Section 7.6, no individual claim of an Indemnified Person may be
made against any Party for any Damages under Article 10 unless such Damages exceed an amount
equal to Fifty Thousand Dollars (US$50,000). Furthermore, except for claims relating to a
breach of a Equitable’s obligations under Section 4.4, Section 4.7, the last sentence of
Section 7.4, Section 7.6, Section 11.1(b)(iv) and Section 11.1(b)(v), Equitable shall not
have any liability for any indemnification under Section 11.1(b) until and unless the
aggregate amount of the liability for all Damages for which Claim Notices are delivered by
the Company or PMOG exceeds Three Hundred Fifty Thousand Dollars (US$350,000.00), then only
to the extent such Damages exceed Three Hundred Fifty Thousand Dollars (US$350,000.00). The
adjustments under Section 2.2, any further adjustments with respect to income, proceeds,
receipts and credits under Section 12.1, any future adjustments with respect to Property
Costs under Section 12.2 and any payments in respect of any of the preceding, as well as any
Damages arising out of a breach by a Party of any other provision of this Agreement
(excluding the provisions of Article 4, Article 5, Article 6 and Article 7), shall not be
limited by this Section.

     (d) Notwithstanding anything to the contrary contained elsewhere in this Agreement,
Equitable shall not be required to indemnify any Party under this Article 11 (excluding
Section 11.1(b)(iv) and Section 11.1(b)(v)) for aggregate Damages in excess of fifteen
percent (15%) of the Cash Contribution.

     (e) The amount of any Damages for which an Indemnified Person is entitled to indemnity
under this Article 11 shall be reduced by the amount of insurance proceeds
actually realized and received by the Indemnified Person or its Affiliates with respect
to such Damages (net of any collection costs, and excluding the proceeds of any insurance
policy issued or underwritten by the Indemnified Person or its Affiliates).

ARTICLE 12

MISCELLANEOUS

     Section 12.1 Receipts. Any income, proceeds, receipts and credits attributable to the
Assets which are not reflected in the adjustments to the Cash Contribution following the final
adjustment pursuant to Section 2.2(b) shall be treated as follows: (a) all income, proceeds,
receipts and credits earned with respect to the Assets to which the Company is entitled under

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Section 1.5 shall be the sole property and entitlement of the Company, and, to the extent received
by Equitable, Equitable shall fully disclose, account for and remit the same promptly to the
Company; and (b) all income, proceeds, receipts and credits earned with respect to the Assets to
which Equitable is entitled under Section 1.5 shall be the sole property and entitlement of
Equitable and, to the extent received by the Company, the Company shall fully disclose, account for
and remit the same promptly to Equitable.

     Section 12.2 Property Costs. Any Property Costs which are not reflected in the adjustments
to the Cash Contribution following the final adjustment pursuant to Section 2.2(b) shall be treated
as follows: (a) all Property Costs for which Equitable is responsible under Section 1.5 shall be
the sole obligation of Equitable and Equitable shall promptly pay, or if paid by the Company,
promptly reimburse the Company for and hold the Company harmless from and against same; and (b) all
Property Costs for which the Company is responsible under Section 1.5 shall be the sole obligation
of the Company and the Company shall promptly pay, or if paid by Equitable, promptly reimburse
Equitable for and hold Equitable harmless from and against same.

     Section 12.3 Counterparts. This Agreement may be executed in counterparts, each of which
shall be deemed an original instrument, but all such counterparts together shall constitute but one
agreement.

     Section 12.4 Notices. All notices that are required or may be given pursuant to this
Agreement shall be sufficient in all respects if given in writing and delivered personally, by
facsimile or by recognized courier service, as follows:

	 	 	 	 	 
	 

	 	If to EPC or EGEL:
	 	225 North Shore Drive
	 

	 	 	 	Pittsburgh, Pennsylvania 15212
	 

	 	 	 	Attention: Corporate Secretary
	 

	 	 	 	Telephone: (412)553-5700
	 

	 	 	 	Telecopy: (412)553-7781
	 
	 	 	 	 
	 

	 	With a copy to:
	 	Baker Botts LLP
	 

	 	 	 	1500 San Jacinto Center
	 

	 	 	 	98 San Jacinto Avenue
	 

	 	 	 	Austin, Texas 78701
	 

	 	 	 	Attention: Michael Bengtson
	 

	 	 	 	Telephone: (512)322-2661
	 

	 	 	 	Telecopy: (512)322-8349
	 
	 	 	 	 
	 

	 	If to PMOG:
	 	777 Main Street, Suite 800
	 

	 	 	 	Fort Worth, Texas 76102
	 

	 	 	 	Attention: Chad Stephens
	 

	 	 	 	Telephone: (810) 817-1929
	 

	 	 	 	Telecopy: (810) 817-1990

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	 	With a copy to:
	 	125 State Route 43
	 

	 	 	 	P.O. Box 550
	 

	 	 	 	Hartville, OH 44632
	 

	 	 	 	Attention: Jeffery A. Bynum
	 

	 	 	 	Telephone: (330) 877-6747
	 

	 	 	 	Telecopy: (330) 877-6129
	 
	 	 	 	 
	 

	 	If to the Company:
	 	225 North Shore Drive
	 

	 	 	 	Pittsburgh, Pennsylvania 15212
	 

	 	 	 	Attention: Corporate Secretary
	 

	 	 	 	Telephone: (412)553-5700
	 

	 	 	 	Telecopy: (412)553-7781

Any Party may change its address for notice by notice to the other Party in the manner set forth
above. All notices shall be deemed to have been duly given at the time of receipt by the Party to
which such notice is addressed if received during regular business hours on a Business Day or, if
not so received, on the next Business Day.

     Section 12.5 [Intentionally Omitted].

     Section 12.6 Expenses. All expenses incurred by Equitable or the Company in connection
with or related to the authorization, preparation or execution of this Agreement, and the Exhibits
and Schedules hereto and thereto, and all other matters related to the Closing, including all fees
and expenses of counsel, accountants and financial advisers employed by Equitable, shall be borne
solely and entirely by Equitable, and all such expenses incurred by PMOG shall be borne solely and
entirely by PMOG.

     Section 12.7 Replacement of Bonds, Letters of Credit and Guarantees. The Parties
understand that none of the bonds, letters of credit and guarantees, if any, posted by Equitable or
any of its Affiliates with any Governmental Authority or third Person and relating to the Assets
are to be transferred to the Company. As soon as practicable following Closing, the Company shall
obtain, or cause to be obtained in the name of the Company, replacements for such bonds, letters of
credit and guarantees, to the extent such replacements are necessary to permit the cancellation of
the bonds, letters of credit and guarantees posted by Equitable and such Affiliates or to
consummate the transactions contemplated by this Agreement.

     Section 12.8 Governing Law; Jurisdiction; Court Proceedings. This Agreement and the legal
relations between the Parties shall be governed by and construed in accordance with the laws of the
Commonwealth of Virginia without regard to principles of conflicts of laws that would direct the
application of the laws of another jurisdiction. Each of the Parties agrees that it shall bring
any action or proceeding in respect of any claim arising out of or related to this Agreement or the
transactions contemplated hereby exclusively in the Federal Court for the Western District of
Virginia (the “Chosen Court”) and, solely in connection with claims arising under this Agreement or
the transactions contemplated hereby, (i) irrevocably submits to the

-43-

 

exclusive jurisdiction of the
Chosen Court, (ii) waives any objection to laying venue in any such action or proceeding in the
Chosen Court, and (iii) waives any objection that the Chosen Court is an inconvenient forum or does
not have jurisdiction over it. The foregoing consents to jurisdiction shall not constitute general
consents for any purpose except as provided herein and shall not be deemed to confer rights on any
Person other than the Parties.

     Section 12.9 Records. Equitable shall provide access to PMOG to such Records as PMOG shall
reasonably request that are in the possession of Equitable or its Affiliates, in order for PMOG to
make copies of the same, provided that Equitable shall be permitted to retain the originals of all
such Records as Operating Member of the Company.

     Section 12.10 Captions. The captions in this Agreement are for convenience only and shall
not be considered a part of or affect the construction or interpretation of any provision of this
Agreement.

     Section 12.11 Waivers. Any failure by any Party to comply with any of its obligations,
agreements or conditions herein contained may be waived by the Party to whom such compliance is
owed by an instrument signed by the Party to whom compliance is owed and expressly identified as a
waiver, but not in any other manner. No waiver of, or consent to a change in, any of the
provisions of this Agreement shall be deemed or shall constitute a waiver of, or consent to a
change in, other provisions hereof (whether or not similar), nor shall such waiver constitute a
continuing waiver unless otherwise expressly provided.

     Section 12.12 Assignment. No Party shall assign or otherwise transfer all or any part of
this Agreement, except to a wholly-owned Affiliate in a transfer whereby this Agreement remains
binding upon the transferring Party, nor shall any Party delegate any of its rights or duties
hereunder, without the
prior written consent of the other Party and any transfer or delegation made without such consent
shall be void. Subject to the foregoing, this Agreement shall be binding upon and inure to the
benefit of the Parties hereto and their respective successors and assigns.

     Section 12.13 Entire Agreement. This Agreement, the Exhibits and Schedules attached hereto
and the documents to be executed hereunder or in connection with a condition to Closing, together
with the Purchase Agreement, the exhibits and schedules attached thereto and the documents to be
executed thereunder or in connection with a condition to the closing thereof (the “Transaction
Documents”), shall constitute the entire agreement among the Parties and their Affiliates
pertaining to the subject matter of the Transaction Documents, and supersede all prior agreements,
understandings, negotiations and discussions, whether oral or written, among the Parties and their
Affiliates regarding such subject matter, including that certain letter of intent, dated as of
September 25, 2006, between Range Resources Corporation and Equitable Resources, Inc. (the “Letter
of Intent”). The Parties agree that, effective as of the Execution Date, the Letter of Intent
shall be of no further force and effect.

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     Section 12.14 Amendment. This Agreement may be amended or modified only by an agreement in
writing signed by Equitable and PMOG and expressly identified as an amendment or modification.

     Section 12.15 No Third Person Beneficiaries. Nothing in this Agreement shall entitle any
Person other than a Party to any claim, cause of action, remedy or right of any kind, except the
rights expressly provided to the Persons described in Section 11.1(f).

     Section 12.16 References.

     In this Agreement:

     (a) References to any gender include a reference to all other genders;

     (b) References to the singular include the plural, and vice versa;

     (c) Reference to any Article or Section means an Article or Section of this Agreement;

     (d) Reference to any Exhibit or Schedule means an Exhibit or Schedule to this
Agreement, all of which are incorporated into and made a part of this Agreement;

     (e) Unless expressly provided to the contrary, “hereunder”, “hereof”, “herein” and
words of similar import are references to this Agreement as a whole and not any particular
Section or other provision of this Agreement; and

     (f) “Include” and “including” shall mean include or including without limiting the
generality of the description preceding such term.

     Section 12.17 Construction. PMOG is a party capable of making such investigation,
inspection, review and evaluation of the Assets as a prudent person would deem appropriate under
the circumstances, including with respect to all matters relating to the Assets, their value,
operation and suitability. Each of Equitable, PMOG and the Company has had the opportunity to
exercise business discretion in relation to the negotiation of the details of the transaction
contemplated hereby. This Agreement is the result of arm’s-length negotiations from equal
bargaining positions.

     Section 12.18 Limitation on Damages. Notwithstanding anything to the contrary contained
herein, no Party or any of their respective Affiliates shall be entitled to consequential, special
or punitive damages in connection with this Agreement and the transactions contemplated hereby
(other than consequential, special or punitive damages suffered by unaffiliated third Persons for
which responsibility is allocated to a Party) and each Party, for itself and on behalf of its
Affiliates, hereby expressly waives any right to consequential, special or punitive damages in
connection with this Agreement and the transactions contemplated hereby.

-45-

 

     Section 12.19 Attorneys’ Fees. Except as expressly provided in Section 3.3(f) and Section
2.2(c), in connection with any suit, action or other proceeding to enforce any Party’s obligations
under this Agreement, the Party prevailing in such suit, action or other proceeding shall be
entitled to seek the recovery of all its costs and fees (including attorneys’ fees, experts’ fees,
administrative fees, arbitrators’ fees and court costs) incurred in connection with such suit,
action or other proceeding.

[SIGNATURE PAGE FOLLOWS]

-46-

 

     IN WITNESS WHEREOF, this Agreement has been signed by each of the Parties as of the
Execution Date.

	 	 	 	 	 	 	 	 	 
	 	 	EPC:	 	Equitable Production Company	 	 
	 
	 	 	 	 	 	 	 	 
	 

	 	 	 	By:	 	 	 	 
	 

	 	 	 	Name:
	 	 

	 	 
	 

	 	 	 	Title:	 	 	 	 
	 
	 	 	 	 	 	 	 	 
	 	 	EGEL:	 	Equitable Gathering Equity, LLC	 	 
	 
	 	 	 	 	 	 	 	 
	 

	 	 	 	By:	 	 	 	 
	 

	 	 	 	Name:
	 	 

	 	 
	 

	 	 	 	Title:	 	 	 	 
	 
	 	 	 	 	 	 	 	 
	 	 	PMOG:	 	Pine Mountain Oil and Gas, Inc.	 	 
	 
	 	 	 	 	 	 	 	 
	 

	 	 	 	By:	 	 	 	 
	 

	 	 	 	Name:
	 	 

	 	 
	 

	 	 	 	Title:	 	 	 	 
	 
	 	 	 	 	 	 	 	 
	 	 	COMPANY:	 	Nora Gathering, LLC	 	 
	 
	 	 	 	 	 	 	 	 
	 

	 	 	 	By:	 	 	 	 
	 

	 	 	 	Name:
	 	 

	 	 
	 

	 	 	 	Title:	 	 	 	 

SIGNATURE PAGE TO CONTRIBUTION AGREEMENT

-47-

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