Document:

Ex-10.1

 

Exhibit 10.1

EMPLOYMENT AGREEMENT

Effective
Date: December 18, 2006

     The parties to this Employment Agreement (this “Agreement”) are Linn Operating,
Inc., a Delaware corporation (the “Company”) and Mark Ellis (the “Employee”).
The parties desire to provide for the employment of the Employee as Executive Vice President &
Chief Operating Officer of the Company and of Linn Energy (as defined) commencing on Employee’s
first date of employment, such date to be mutually agreed by the parties (the “Effective Date”) on
the terms set forth herein,. Linn Energy, LLC, a Delaware limited liability company and
the 100% parent of the Company (“Linn Energy”), is joining in this agreement for the
limited purposes of reflecting its agreement to the matters set forth herein as to it, but such
joinder is not intended to make Linn Energy the employer of the Employee for any purpose.

     Accordingly, the parties, intending to be legally bound, agree as follows:

1. Position and Duties

     1.1 Employment; Titles; Reporting. The Company agrees to employ the Employee and the
Employee agrees to enter employment with the Company, upon the terms and subject to the conditions
provided under this Agreement. During the Employment Term (as defined in Section 2), the
Employee will serve each of the Company and Linn Energy as the Executive Vice President & Chief
Operating Officer. In such capacity, the Employee will report to Linn Energy’s and the Company’s
Chairman, President & CEO and otherwise will be subject to the direction and control of the Board
of Directors of Linn Energy (including any committee thereof, the “Board”), and, the
Employee will have such duties, responsibilities and authorities as may be assigned to him by the
Chairman of the Board or the Board from time to time and otherwise consistent with such position in
a public company comparable to Linn Energy which is engaged in natural gas and oil acquisition,
development and production (including, but not limited to, maintaining, to the extent applicable,
compliance with the Sarbanes-Oxley Act of 2002 and related regulations and all other federal, state
and local laws and regulations, as well as all regulations and rules of any exchange or electronic
trading system on which Linn Energy’s securities are traded). Employee shall be promoted to the
position of President and Chief Operating Officer not later than January 1, 2008 provided that
Employee is then an employee of Company. Following such promotion Employee shall report to the
Chairman & Chief Executive Officer, and shall have such responsibilities as are consistent with the
position of President and Chief Operating Officer of a publicly traded corporation comparable to
Linn Energy which is engaged in natural gas and oil acquisition, development and production.

     1.2 Duties. During the Employment Term, the Employee will devote substantially all of
his full working time to the business and affairs of the Company, will use his best efforts to
promote the Company’s interests and will perform his duties and responsibilities faithfully,
diligently and to the best of his ability, consistent with sound business practices. The Employee
may be required by the Board to provide services to, or otherwise serve as an officer or director
of, any direct or indirect subsidiary of the Company or to Linn Energy, as applicable. The Employee
will comply with the Company’s and Linn Energy’s policies, codes and procedures, as they may be in
effect from time to time, applicable to executive officers of the Company and Linn Energy.
Nevertheless, the Employee may, with the prior approval of the Board in each instance, engage in
such other business and charitable activities that do not violate Section 7, create a
conflict of interest or the appearance of a conflict of interest with the Company or Linn

 

 

Energy or materially interfere with the performance of his obligations to the Company or Linn
Energy under this Agreement.

     1.3 Place of Employment. The Employee will perform his duties under this Agreement at
the Company’s offices in Houston, Texas, with the likelihood of substantial business travel.

2. Term of Employment. The term of the Employee’s employment by the Company under this Agreement
(the “Employment Term”) will commence on the Effective Date and will continue until
employment is terminated by either party under Section 5. The date on which the Employee’s
employment ends is referred to in this Agreement as the “Termination Date.”

3. Compensation.

     3.1 Base Salary. During the Employment Term, the Employee will be entitled to receive
a base salary (“Base Salary”) for services rendered to the Company and any of its direct or
indirect subsidiaries, payable in accordance with the Company’s regular payroll practices.
Employee’s Annual Base Salary shall be not less than: (i) from the effective date of this Agreement
through 12/31/2007 — $250,000.00; and, (ii) on and after 1/1/2008 — $300,000.00. The Employee’s
Base Salary shall be reviewed annually by the Board and may be adjusted upward in the Board’s sole
discretion.

     3.2 Bonus Compensation. (a) The Employee shall be entitled to a one-time guaranteed
bonus (the “One-Time Bonus”) in the amount of $250,000.00 payable within five business days after
January 1, 2007. (b) The Employee will also be entitled to receive a guaranteed bonus (“Guaranteed
Bonus”) payment of not less than one-hundred percent (100%) of Employee’s then current Base Salary
with respect to the Company’s fiscal year ending December 31, 2007 and December 31, 2008, provided
Employee is then employed by Company at that date. Thereafter, during the Employment Term, the
Employee shall receive incentive compensation in such amounts and at such times as the Board may
determine in its sole discretion to award to him under any incentive compensation or other bonus
plan or arrangement as may be established by the Board from time to time (collectively, the
“Employee Bonus Plan”). Any additional incentive compensation payable under any Employee
Bonus Plan will be referred to in the aggregate in this Agreement as the Employee’s
“Bonus.”

     3.3 Long-Term Incentive Compensation.

          (a) Initial Grant of Unit Options. As of the Effective Date the Employee shall receive
an award of non-qualified options to purchase up to fifty thousand (50,000) Units of Linn Energy at
a per share exercise price equal to the fair market value of a Unit as of the date of grant, which
shall be awarded under the terms of the Linn Energy, LLC Long Term Incentive Plan or any successor
plan, as it may be in effect from time to time (the “Incentive Plan”). Provided however, that this
initial grant of options shall vest: (i) one-third (1/3) as of 1/1/2007; (ii) one-third (1/3) as of
1/1/2008; and, (iii) one-third (1/3) as of 1/1/2009. Except as explicitly provided in this
paragraph, the options will be subject to such other terms and conditions set forth in the
applicable option agreement.

          (b) Initial Grant of Restricted Units. As of the Effective Date the Employee shall
receive a Restricted Unit award in the amount of two-hundred thousand (200,000) Units of
Linn Energy, which shall be awarded under the terms of the Incentive Plan. Provided however,
that the Initial Grant of Restricted Units shall vest: (i) one-half (50%) as of 1/1/2007; (ii) one-

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quarter (25%) as of 1/1/2008; and, (iii) the remaining one-quarter (25%) shall vest as of
1/1/2009. Except as explicitly provided in this paragraph, the Initial Grant of Restricted Units
will be subject to such other terms and conditions set forth in the applicable restricted unit
agreement.

          (c) Future Grants of Unit Options- First Anniversary After Effective Date. On the
first anniversary of the Effective Date, Employee shall receive an award of non-qualified options
to purchase up to fifty thousand (50,000) Units of Linn Energy at a per share exercise price equal
to the fair market value of a Unit as of the date of grant, which shall be awarded under the terms
of the Linn Energy, LLC Long Term Incentive Plan or any successor plan, as it may be in effect from
time to time (the “Incentive Plan”). Provided however, that each such Future Grant of Unit Options
shall vest: (i) one-third (1/3) at the end of twelve (12) months following the award; (ii)
one-third (1/3) at the end of twenty four (24) months following the award; and, (iii) the remaining
one-third (1/3) at the end of thirty-six (36) months following the date of such award. Except as
explicitly provided in this paragraph, the options will be subject to such other terms and
conditions set forth in the applicable option agreement. Employee shall be entitled to this
subparagraph (c) grant only if Employee is employed by Company on the first anniversary of the
Effective Date.

          (d) Future Grants of Restricted Units- First Anniversary After Effective Date. Not
later than 1/1/2008, Employee shall receive a Restricted Unit Award in the amount of not less than
one-hundred thousand (100,000) Units of Linn Energy, which shall be awarded under the terms of the
Incentive Plan. Provided however, that this grant of Restricted Units shall vest: (i) one-third
(1/3) as of 1/1/2008; (ii) one-third (1/3) as of 1/1/2009; and, (iii) the remaining one-third (1/3)
as of 1/1/2010. Except as explicitly provided in this paragraph, all Future Grants of Restricted
Units will be subject to such other terms and conditions set forth in the applicable restricted
unit agreement. Employee shall be entitled to this subparagraph (d) grant only if Employee is
employed by Company on the first anniversary of the Effective Date.

          (e) Future Awards. In addition to the above long-term incentive compensation awards,
awards of Unit options, Unit grants, restricted Units and/or other forms of equity-based
compensation to the Employee on or after the Effective Date may be made from time to time during
the Employment Term by the Board in its sole discretion, whose decision will be based upon
performance and award guidelines for executive officers of the Company and Linn Energy established
periodically by the Board in its sole discretion.

4. Expenses and Other Benefits.

     4.1 Reimbursement of Expenses. The Employee will be entitled to receive prompt
reimbursement for all reasonable expenses incurred by him during the Employment Term (in
accordance with the policies and practices presently followed by the Company or as may be
established by the Board from time to time for the Company’s and Linn Energy’s senior executive
officers) in performing services under this Agreement, provided that the Employee properly
accounts for such expenses in accordance with the Company’s and Linn Energy’s policies as in
effect from time to time.

     4.2 Vacation. Employee will be entitled to paid vacation time each year during the
Employment Term that will accrue in accordance with the Company’s policies and procedures
now in force or as such policies and procedures may be modified with respect to all senior
executive officers of the Company.

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     4.3 Other Employee Benefits. In addition to the foregoing, during the Employment
Term, the Employee will be entitled to participate in and to receive benefits as a senior
executive under all of the Company’s employee benefit plans, programs and arrangements available
to senior executives, subject to the eligibility criteria and other terms and conditions thereof,
as such plans, programs and arrangements may be duly amended, terminated, approved or adopted by
the Board from time to time.

5. Termination of Employment.

     5.1 Death. The Employee’s employment under this Agreement will terminate upon his
death.

     5.2 Termination by the Company.

     (a) Terminable at Will. The Company may terminate the Employee’s employment under this
Agreement at any time with or without Cause (as defined below).

     (b) Definition of Cause. For purposes of this Agreement, the Company will have
“Cause” to terminate the Employee’s employment under this Agreement by reason of any
of the following: (i) the Employee’s conviction of, or plea of nolo contendere to, any
felony or to any crime or offense causing substantial harm to any of Linn Energy or its
direct or indirect subsidiaries (whether or not for personal gain) or involving acts of
theft, fraud, embezzlement, moral turpitude or similar conduct; (ii) the Employee’s repeated
intoxication by alcohol or drugs during the performance of his duties; (iii) malfeasance in
the conduct of Employee’s duties, including, but not limited to, (A) willful and intentional
misuse or diversion of any of the funds of Linn Energy or its direct or indirect
subsidiaries, (B) embezzlement or (C) fraudulent or willful and material misrepresentations
or concealments on any written reports submitted to any of Linn Energy or its direct or
indirect subsidiaries; (iv) the Employee’s material failure to perform the duties of the
Employee’s employment consistent with Employee’s position, expressly including the
provisions of this Agreement, or material failure to follow or comply with the reasonable
and lawful written directives of the Board; (v) a material breach of this Agreement; or (vi)
a material breach by the Employee of written policies of the Company concerning employee
discrimination or harassment.

     (c) Notice and Cure Opportunity in Certain Circumstances. The Employee may be afforded
a reasonable opportunity to cure any act or omission that would otherwise constitute “Cause”
hereunder according to the following terms: The Board shall give the Employee written notice
stating with reasonable specificity the nature of the circumstances determined by the Board
in good faith to constitute “Cause.” If, in the good faith judgment of the Board, the
alleged breach is reasonably susceptible to cure, the Employee will have fifteen (15) days
from his receipt of such notice to effect the cure of such circumstances or such breach to
the good faith satisfaction of the Board. The Board will state whether the Employee will
have such an opportunity to cure in the initial notice of “Cause” referred to above. If, in
the good faith judgment of the Board the alleged breach is not reasonably susceptible to
cure, or such circumstances or breach have not been satisfactorily cured within such fifteen
(15) day cure period.

     5.3 Termination by the Employee.

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     (a) Terminable at Will. The Employee may terminate his employment under this Agreement
at any time with or without Good Reason (as defined below).

     (b) Notice and Cure Opportunity. If such termination is with Good Reason, the Employee
will give the Company written notice, which will identify with reasonable specificity the
grounds for the Employee’s resignation and provide the Company with fifteen (15) days from
the day such notice is given to cure the alleged grounds for resignation contained in the
notice. A termination will not be for Good Reason if such notice is given by the Employee to
the Company more than thirty (30) days after the occurrence of the event that the Employee
alleges is Good Reason for his termination hereunder.

     (c) Definition of Good Reason. For purposes of this Agreement, “Good Reason”
will mean any of the following to which the Employee will not consent in writing: (a) a
reduction in the Employee’s Base Salary; (b) failure by Company to pay in full any of the
compensation or benefits described in this Agreement on a current basis; (c) material breach
of any provision of this Agreement by Company; (d) a reduction in position or
responsibilities that in the reasonable determination of Employee constitutes a substantial
reduction in position or responsibilities; or, (e) a relocation within two (2) years from
the Effective Date of this Agreement of the Employee’s primary place of employment to a
location more than fifty (50) miles from Houston, Texas.

     5.4 Notice of Termination. Any termination of the Employee’s employment by the Company
or by the Employee during the Employment Term (other than termination pursuant to Section
5.1) will be communicated by written Notice of Termination to the other party hereto in
accordance with Section 8.7. For purposes of this Agreement, a “Notice of
Termination” means a written notice that (a) indicates the specific termination provision in
this Agreement relied upon, (b) to the extent applicable, sets forth in reasonable detail the facts
and circumstances claimed to provide a basis for termination of the Employee’s employment under the
provision so indicated, and (c) if the Termination Date (as defined herein) is other than the date
of receipt of such notice, specifies the Termination Date (which Termination Date will be not more
than thirty (30) days after the giving of such notice).

     5.5 Disability. If the Company determines in good faith that the Disability (as
defined herein) of the Employee has occurred during the Employment Term, it may, without breaching
this Agreement, give to the Employee written notice in accordance with Section 5.4 of its
intention to terminate the Employee’s employment. In such event, the Employee’s employment with the
Company will terminate effective on the fifteenth (15th) day after receipt of such
notice by the Employee (the “Disability Effective Date”), provided that, within the fifteen
(15) days after such receipt, the Employee will not have returned to full-time performance of the
Employee’s duties. “Disability” means the determination by a physician selected by the
Company that the Employee has been unable to perform substantially the Employee’s usual and
customary duties under this Agreement for a period of at least one hundred twenty (120) consecutive
days or a non-consecutive period of one hundred eighty (180) days during any twelve-month period as
a result of incapacity due to mental or physical illness or disease. At any time and from time to
time, upon reasonable request therefor by the Company, the Employee will submit to reasonable
medical examination for the purpose of determining the existence, nature and extent of any such
disability. Any physician selected by Company shall be Board Certified in the
appropriate field, shall have no actual or potential conflict of interest, and may not be a
physician who has been retained by the Company for any purpose within the prior three years.

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6. Compensation of the Employee upon Termination.

     6.1 Death. If the Employee’s employment under this Agreement is terminated by reason
of his death, the Company shall pay to the person or persons designated by the Employee for that
purpose in a notice filed with the Company, or, if no such person will have been so designated, to
his estate, the amount of (a) the Employee’s accrued but unpaid Base Salary through the Termination
Date paid in a lump sum within thirty (30) days following the Termination Date, (b) with respect to
any Termination Date on or after January 1, 2007 by reason of Employee’s death, any accrued but
unpaid Bonus, which Bonus will be payable at such time as the bonuses of other executive officers
of the Company are payable, (c) with respect to any Termination Date on or before December 31, 2007
by reason of Employee’s death, a cash amount equal to (i) any unpaid One-Time Bonus amounts, if
any, and (ii) the Employee’s pro-rata Guaranteed Bonus amount set forth in Section 3.2 of this
Agreement, payable at such time as bonuses for such annual period are paid to other executive
officers of the Company, and (d) any other amounts that may be reimbursable by the Company to the
Employee as expressly provided under this Agreement paid in a lump sum within thirty (30) days
following the Termination Date, and the Company thereafter will have no further obligation to the
Employee under this Agreement, other than for payment of any amounts accrued and vested under any
employee benefit plans or programs of the Company and any payments or benefits required to be made
or provided under applicable law. Without limiting the generality of the foregoing, any rights the
Employee’s beneficiary may have to the proceeds of any life insurance arrangement set forth in
Section 4.3 will be in lieu of any special entitlement to severance pay or benefits upon
the Employee’s death. Notwithstanding any other provision of this Agreement, on Employee’s death,
all granted but unvested Units, Restricted Units or Unit Options shall immediately vest.

     6.2 Disability. In the event of the Employee’s termination by reason of Disability
pursuant to Section 5.5, the Employee will continue to receive his Base Salary and
participate in applicable employee benefit plans or programs of the Company (on an equivalent basis
to Section 6.4(a)(iv)
below) through the Termination Date, subject to offset
dollar-for-dollar by the amount of any disability income payments provided to the Employee under
any Company disability policy or program funded by the Company, and will receive (a) the Employee’s
accrued but unpaid Base Salary through the Termination Date paid in a lump sum within thirty (30)
days following the Termination Date, (b) with respect to any Termination Date on or after January
1, 2007 by reason of Employee’s Disability, any accrued but unpaid Bonus, which Bonus will be
payable at such time as the bonuses of other executive officers of the Company are payable, (c)
with respect to any Termination Date on or before December 31, 2007 by reason of Employee’s
Disability, a cash amount equal to (i) any unpaid One-Time Bonus amounts, if any, and (ii) the
Employee’s pro-rata Guaranteed Bonus amount set forth in Section 3.2 of this Agreement, payable at
such time as bonuses for such annual period are paid to other executive officers of the Company,
and (d) any other amounts that may be reimbursable by the Company to the Employee as expressly
provided under this Agreement paid in a lump sum within thirty (30) days following the Termination
Date, and the Company thereafter will have no further obligation to the Employee under this
Agreement, other than for payment of any amounts accrued and vested under any employee benefit
plans or programs of the Company and any payments or benefits required to be made or provided under
applicable law. Notwithstanding any other provision of this Agreement, on Employee’s Termination on
account of Disability, all granted but unvested Units, Restricted Units or Unit Options shall
immediately vest.

     6.3 By the Company for Cause or the Employee Without Good Reason. If the Employee’s
employment is terminated by the Company for Cause, or if the Employee

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terminates his employment
other than for Good Reason, the Employee will receive (a) the Employee’s accrued but unpaid Base
Salary through the Termination Date paid in a lump sum within thirty (30) days following the
Termination Date, (b) any accrued but unpaid Bonus, which Bonus will be payable at such time as the
bonuses of other executive officers of the Company are payable, and (c) any other amounts that may
be reimbursable by the Company to the Employee as expressly provided under this Agreement paid in a
lump sum within thirty (30) days following the Termination Date, and the Company thereafter will
have no further obligation to the Employee under this Agreement, other than for payment of any
amounts accrued and vested under any employee benefit plans or programs of the Company and any
payments or benefits required to be made or provided under applicable law. Employee shall not
forfeit any granted and vested Units, Restricted Units or Unit Options, and Company shall promptly
deliver certificates evidencing such Units or options.

     6.4 By the Employee for Good Reason or the Company other than for Cause. 

     (a) Severance Benefits on Non-Change of Control Termination. Subject to the provisions
of Section 6.4(b) and Section 6.4(d), if prior to or more than one (1) year
after the occurrence of a Change of Control (as defined below) the Company terminates the
Employee’s employment without Cause, or the Employee terminates his employment for Good
Reason, then the Employee will be entitled to the following benefits (the “Severance
Benefits”):

     (i) an amount equal to (a) the Employee’s accrued but unpaid Base Salary
through the Termination Date paid in a lump sum within thirty (30) days following
the Termination Date, (b) with respect to any Termination Date on or after January
1, 2009 by the Employee for Good Reason or by the Company without Cause, any pro
rata accrued but unpaid Bonus, which pro rata Bonus will be payable at such time as
the bonuses of other executive officers of the Company are payable, (c) any other
amounts that may be reimbursable by the Company to the Employee as expressly
provided under this Agreement paid in a lump sum within thirty (30) days following
the Termination Date;

     (ii) with respect to any termination event described in this paragraph (a) of
Section 6.4: (A) occurring after the Effective Date and prior to the first
anniversary date thereof, twelve (12) monthly payments, and (B) occurring on or
after the first anniversary of the Effective Date, twenty-four (24) monthly
payments, in either case in an amount equal to one-twelfth (1/12) of the Employee’s
annual Base Salary at the highest rate in effect at any time during the thirty-six
(36)-month period prior to the Termination Date, commencing with the calendar month
immediately following the calendar month in which the Termination Date occurs;

     (iii) With respect to any Termination Date on or before December 31, 2008 by
the Employee for Good Reason or by the Company without Cause, a cash amount equal to
the Employee’s pro-rata Guaranteed Bonus amount set forth in Section 3.2 of this
Agreement, payable at such time as bonuses for such annual period are paid to other
executive officers of the Company;

     (iv) the Company will pay the full cost of the Employee’s COBRA continuation
coverage for such period, as such coverage is required to be continued under
applicable law; provided, however, that, notwithstanding the

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foregoing, the benefits
described in this Section 6.4(a)(iv) may be discontinued prior to the end of
the period provided in this subsection (iv) to the extent, but only to the extent,
that the Employee receives substantially similar benefits from a subsequent employer
(“COBRA Benefit”); and

     (v) All of Employee’s granted but unvested Units, Restricted Units or Unit
Options shall immediately vest.

     (b) Change of Control Benefits. Subject to the provisions of Section 6.4(d), if
within the one (1) year period following the occurrence of a Change of Control, the Company
terminates the Employee’s employment without Cause, or the Employee terminates his
employment for Good Reason (an “Eligible Termination”), then, in lieu of the Severance
Benefits under Section 6.4(a), the Employee will be entitled to benefits (the
“Change of Control Benefits”):

	 	1)	 	Amounts identical to those set forth in
Section 6.4(a) except that the amount described in clause (ii)
will be paid in a lump sum within thirty (30) days following the
Termination Date and will be equal to: (A) twelve (12) monthly payments
with respect to any Eligible Termination occurring after the Effective
Date and prior to the first anniversary date thereof, and (B) with
respect to any Eligible Termination occurring on or after the first
anniversary date of the Effective Date an additional twelve (12)
monthly payments, for a total of twenty (24) months; and,
	 
	 	2)	 	All granted but unvested Units, Restricted
Units or Unit Options shall immediately vest and all restrictions are
waived.

     (c) Definition of Change of Control. For purposes of this Agreement, a “Change of
Control” will mean the first to occur of:

     (i) The acquisition by any individual, entity or group (within the meaning of
Section 13(d) (3) or 14(d) (2) of the Exchange Act) (a “Person”) of
beneficial ownership (within the meaning of Rule 13d-3 promulgated under the
Exchange Act) of thirty five prevent (35%) or more of either (A) the
then-outstanding equity interests of Linn Energy (the “Outstanding Linn Energy
Equity”) or (B) the combined voting power of the then-outstanding voting
securities of Linn Energy entitled to vote generally in the election of directors
(the “Outstanding Linn Energy Voting Securities”); provided, however, that,
for purposes of this Section 6.4(c)(i), the following acquisitions will not
constitute a Change of Control: (A) any acquisition directly from Linn Energy, (B)
any acquisition by Linn Energy, (C) any acquisition by any employee benefit plan (or
related trust) sponsored or maintained by Linn Energy or any affiliated company, or
(D) any acquisition by any corporation or other entity pursuant to a transaction
that complies with Section 6.4(c)(iii)(A),
Section 6.4(c)(iii)(B) or
Section 6.4(c)(iii)(C);

     (ii) Any time at which individuals who, as of the date hereof, constitute the
Board (the “Incumbent Board”) cease for any reason to constitute at least a
majority of the Board; provided, however, that any individual becoming a director
subsequent to the date hereof whose election, or nomination for

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election by Linn
Energy’s Unitholders, was approved by a vote of at least a majority of the directors
then comprising the Incumbent Board will be considered as though such individual
were a member of the Incumbent Board, but excluding, for this purpose, any such
individual whose initial assumption of office occurs as a result of an actual or
threatened election contest with respect to the election or removal of directors or
other actual or threatened solicitation of proxies or consents by or on behalf of a
Person other than the Board;

     (iii) Consummation of a reorganization, merger, statutory share exchange or
consolidation or similar corporate transaction involving Linn Energy or any of its
subsidiaries, a sale or other disposition of all or substantially all of the assets
of Linn Energy, or the acquisition of assets or equity interests of another entity
by Linn Energy or any of its subsidiaries (each, a “Business Combination”),
in each case unless, following such Business Combination, (A) all or substantially
all of the individuals and entities that were the beneficial owners of the
Outstanding Linn Energy Equity and the Outstanding Linn Energy Voting Securities
immediately prior to such Business Combination beneficially own, directly or
indirectly, more than 50% of the then-outstanding equity interests and the combined
voting power of the then-outstanding voting securities entitled to vote generally in
the election of directors, as the case may be, of the corporation resulting from
such Business Combination (including, without limitation, a corporation or other
entity that, as a result of such transaction, owns Linn Energy or all or
substantially all of Linn Energy’s assets either directly or through one or more
subsidiaries) in substantially the same proportions as their ownership immediately
prior to such Business Combination of the Outstanding Linn Energy Equity and the
Outstanding Linn Energy Voting Securities, as the case may be, (B) no Person
(excluding any corporation resulting from such Business Combination or any employee
benefit plan (or related trust) of Linn Energy or such corporation or other entity
resulting from such Business Combination) beneficially owns, directly or indirectly,
35% or more of, respectively, the then-outstanding equity interests of the
corporation or other entity resulting from such Business Combination or the combined
voting power of the then-outstanding voting securities of such corporation or other
entity, except to the extent that such ownership existed prior to the Business
Combination, and (C) at least a majority of the members of the board of directors of
the corporation or equivalent body of any other entity resulting from such Business
Combination were members of the Incumbent Board at the time of the execution of the
initial agreement or of the action of the Board providing for such Business
Combination; or

     (iv) Consummation of a complete liquidation or dissolution of Linn Energy.

     (d) Conditions to Receipt of Severance Benefits.

     (i) Release. As a condition to receiving any Severance Benefits or
Change of Control Benefits to which the Employee may otherwise be entitled under
Section 6.4(a) or Section 6.4(b), the Employee will execute a
release (the
“Release”), which will include an affirmation of the restrictive
covenants set forth in Section 7 and a non-disparagement provision, in a
form and substance satisfactory to the Company, of any claims, whether arising under
federal, state or local statute, common law or otherwise, against the Company and
its direct or

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indirect subsidiaries which arise or may have arisen on or before the
date of the Release, other than any claims under this Agreement or any rights to
indemnification from the Company and its direct or indirect subsidiaries pursuant to
any provisions of the Company’s (or any of its subsidiaries’) organizational
documents or any directors and officers liability insurance policies maintained by
the Company. If the Employee fails or otherwise refuses to execute a Release within
a reasonable time after the Company’s request to do so, and in all events prior to
the date on which such benefits are to be first paid to her, the Employee will not
be entitled to any Severance Benefits or Change of Control Benefits, as the case may
be, or any other benefits provided under this Agreement and the Company will have no
further obligations with respect to the provision of those benefits except as may be
required by law. Such Release shall be void ab initio, if Company thereafter fails
to fully and timely pay all compensation and benefits due to Employee under this
Agreement.

     (ii) Limitation on Benefits. If, following a termination of employment
that gives the Employee a right to the payment of Severance Benefits under
Section 6.4(a) or Section 6.4(b), the Employee violates in any
material respect any of the covenants in Section 7 or as otherwise set forth
in the Release, the Employee will have no further right or claim to any payments or
other benefits to which the Employee may otherwise be entitled under Section
6.4(a) or Section 6.4(b) from and after the date on which the Employee
engages in such activities and the Company will have no further obligations with
respect to such payments or benefits, and the covenants in Section 7 will
nevertheless continue in full force and effect.

     6.5 Severance Benefits Not Includable for Employee Benefits Purposes. Except to the
extent the terms of any applicable benefit plan, policy or program provide otherwise, any benefit
programs of the Company that takes into account the Employee’s income will exclude any and all
Severance Benefits and Change of Control Benefits provided under this Agreement.

     6.6 Exclusive Severance Benefits. The Severance Benefits payable under Section
6.4(a) or the Change of Control Benefits payable under Section 6.4(b), if they become
applicable under the terms of this Agreement, will be in lieu of any other severance or similar
benefits that would otherwise be payable under any other agreement, plan, program or policy of the
Company.

     6.7 Additional Provisions Regarding Payments Under This Agreement. Notwithstanding
anything in this Agreement to the contrary, in the event that any benefits payable or otherwise
provided under this Agreement would be

     (a) subject to the excise tax imposed by Section 4999 of the Internal Revenue Code of
1986, as amended (the “Code”), (such excise tax referred to in this Agreement as the
“Excise Tax”), then Company shall provide for the payment of, or otherwise reimburse
the Employee for, an amount equal to such Excise Tax and any related taxes, fees or
penalties thereon.

     (b) subject to penalty and interest under Section 409A of the Code, then Company shall
provide for the payment of, or otherwise reimburse the Employee for, an amount equal to such
penalty and interest, and any related taxes, fees or penalties thereon.

 - 10 - 

 

     (c) deemed to constitute non-qualified deferred compensation subject to Section 409A of
the Code, Linn Energy or the Company, as the case may be, will have the discretion to adjust
the terms of such payment or benefit (but not the amount or value thereof) as reasonably
necessary to comply with the requirements of Section 409A to avoid the imposition of any
excise tax or other penalty with respect to such payment or benefit under Section 409A of
the Code.

7. Restrictive Covenants.

     7.1 Confidential Information. The Employee hereby acknowledges that in connection with
his employment by the Company he will be exposed to and may obtain certain Confidential Information
(as defined below) (including, without limitation, procedures, memoranda, notes, records and
customer and supplier lists whether such information has been or is made, developed or compiled by
the Employee or otherwise has been or is made available to her) regarding the business and
operations of the Company and its subsidiaries or affiliates. The Employee further acknowledges
that such Confidential Information is unique, valuable, considered trade secrets and deemed
proprietary by the Company. For purposes of the Agreement, “Confidential Information”
includes, without limitation, any information heretofore or hereafter acquired, developed or used
by any of the Company, Linn Energy or their direct or indirect subsidiaries relating to Business
Opportunities or Intellectual Property or other geological, geophysical, economic, financial or
management aspects of the business, operations, properties or prospects of the Company, Linn Energy
or their direct or indirect subsidiaries, whether oral or in written form. The Employee agrees that
all Confidential Information is and will remain the property of the Company, Linn Energy or their
direct or indirect subsidiaries, as the case may be. The Employee further agrees, except for
disclosures occurring in the good faith performance of his duties for the Company, Linn Energy or
their direct or indirect subsidiaries, during the Employment Term and for a period of one (1) year
after the Termination Date, to hold in the strictest confidence all Confidential Information, and
not to, directly or indirectly, duplicate, sell, use, lease, commercialize, disclose or otherwise
divulge to any person or entity any portion of the Confidential Information or use any Confidential
Information, directly or indirectly, for his own benefit or profit or allow any person, entity or
third party, other than the Company, Linn Energy or their direct or indirect subsidiaries and
authorized executives of the same, to use or otherwise gain access to any Confidential Information.
The Employee will have no obligation under this Agreement with respect to any information that
becomes generally available to the public other than as a result of a disclosure by the Employee or
his agent or other representative or becomes available to the Employee on a non-confidential basis
from a source other than the Company, Linn Energy or their direct or indirect subsidiaries.
Further, the Employee will have no obligation under this Agreement to keep confidential any of the
Confidential Information to the extent that a disclosure of it is required by law or is consented
to by the Company or Linn Energy; provided, however, that if and when such a disclosure is required
by law, the Employee promptly will provide the Company with notice of such requirement, so that the
Company may seek an appropriate protective order.

     7.2 Return of Property. Employee agrees to deliver promptly to the Company, upon
termination of his employment hereunder, or at any other time when the Company so requests,
all documents relating to the business of the Company, Linn Energy or their direct or indirect
subsidiaries, including without limitation: all geological and geophysical reports and related data
such as maps, charts, logs, seismographs, seismic records and other reports and related data,
calculations, summaries, memoranda and opinions relating to the foregoing, production records,
electric logs, core data, pressure data, lease files, well files and records, land files,
abstracts,

 - 11 - 

 

title opinions, title or curative matters, contract files, notes, records, drawings,
manuals, correspondence, financial and accounting information, customer lists, statistical data and
compilations, patents, copyrights, trademarks, trade names, inventions, formulae, methods,
processes, agreements, contracts, manuals or any documents relating to the business of the Company,
Linn Energy or their direct or indirect subsidiaries and all copies thereof and therefrom;
provided, however, that the Employee will be permitted to retain copies of any documents or
materials of a personal nature or otherwise related to the Employee’s rights under this Agreement.

     7.3 Non-Compete Obligations.

     (a) Non-Compete Obligations During Employment Term. The Employee agrees that during the
Employment Term:

     (i) the Employee will not, other than through the Company, engage or
participate in any manner, whether directly or indirectly through any family member
or as an employee, employer, consultant, agent, principal, partner, more than one
percent shareholder, officer, director, licensor, lender, lessor or in any other
individual or representative capacity, in any business or activity which is engaged
in leasing, acquiring, exploring, producing, gathering or marketing hydrocarbons and
related products; [provided that the foregoing shall not be deemed to restrain the
participation by Employee’s spouse in any capacity set forth above in any business
or activity engaged in any such activity and provided further that Linn Energy may,
in good faith, take such reasonable action with respect to Employee’s performance of
his duties, responsibilities and authorities as set forth in Sections 1.1 and 1.2 of
this Agreement as it deems necessary and appropriate to protect its legitimate
business interests with respect to any actual or apparent conflict of interest
reasonably arising from or out of the participation by Employee’s spouse in any such
competitive business or activity]; and

     (ii) all investments made by the Employee (whether in his own name or in the
name of any family members or other nominees or made by the Employee’s controlled
affiliates), which relate to the leasing, acquisition, exploration, production,
gathering or marketing of hydrocarbons and related products will be made solely
through the Company; and the Employee will not (directly or indirectly through any
family members or other persons), and will not permit any of his controlled
affiliates to: (A) invest or otherwise participate alongside the Company or its
direct or indirect subsidiaries in any Business Opportunities, or (B) invest or
otherwise participate in any business or activity relating to a Business
Opportunity, regardless of whether any of the Company or its direct or indirect
subsidiaries ultimately participates in such business or activity, in either case,
except through the Company. Notwithstanding the foregoing, nothing in this Section
7.3 shall be deemed to prohibit the Employee or any family member from owning, or
otherwise having an interest in, less than one percent (1%) of any publicly-owned
entity or three percent (3%) or less of any private equity fund or similar
investment fund that invests in any business or
activity engaged in any of the activities set forth above, provided that
Employee has no active role with respect to any investment by such fund in any
entity.

     (b) Non-Compete Obligations After Termination Date. The Employee agrees that the
Employee will not engage or participate in any manner, whether directly or indirectly

 - 12 - 

 

through any family member or other person or as an employee, employer, consultant, agent
principal, partner, more than one percent shareholder, officer, director, licensor, lender,
lessor or in any other individual or representative capacity:

     (i) during the one (1) year period following the Termination Date, in any
business or activity which is engaged in leasing, acquiring, exploring, producing,
gathering or marketing hydrocarbons and related products within (A) any county or
parish in which the Company owns any oil and gas interests or conducts operations on
the Termination Date or in which the Company has owned any oil and gas interests or
conducted operations at any time during the six months immediately preceding the
Termination Date or (B) any county or parish adjacent to any county or parish
described in clause (A); and

     (ii) during the one (1) year period following the Termination Date, in any
business or activity which is in direct competition with the business of the Company
or its direct or indirect subsidiaries in the leasing, acquiring, exploring,
producing, gathering or marketing of hydrocarbons and related products within the
boundaries of, or within a two-mile radius of the boundaries of, any mineral
property interest of any of the Company or its direct or indirect subsidiaries
(including, without limitation, a mineral lease, overriding royalty interest,
production payment, net profits interest, mineral fee interest or option or right to
acquire any of the foregoing, or an area of mutual interest as designated pursuant
to contractual agreements between the Company and any third party) or any other
property on which any of the Company or its direct or indirect subsidiaries has an
option, right, license or authority to conduct or direct exploratory activities,
such as three-dimensional seismic acquisition or other seismic, geophysical and
geochemical activities (but not including any preliminary geological mapping), as of
the Termination Date or as of the end of the six-month period following such
Termination Date; provided that, this subsection (ii) will not preclude the Employee
from making investments in securities of oil and gas companies which are registered
on a national stock exchange, if (A) the aggregate amount owned by the Employee and
all family members and affiliates does not exceed 5% of such company’s outstanding
securities, and (B) the aggregate amount invested in such investments by the
Employee and all family members and affiliates after the date hereof does not exceed
$500,000.

Notwithstanding the foregoing, nothing in this Section 7.3 shall be deemed to restrain the
participation by Employee’s spouse in any capacity set forth above in any business or activity
described above.

     (c) Not Applicable Following Change of Control Termination. The Employee will not be
subject to the covenants contained in this Section 7.3 and such covenants will not
be enforceable against the Employee from and after the date that the Employee’s employment
is terminated within one (1) year after a Change of Control.

     7.4 Non-Solicitation. During the Employment Term and for a period of one (1) year
after the Termination Date, the Employee will not, whether for his own account or for the account
of any other Person (other than the Company or its direct or indirect subsidiaries), intentionally
solicit, endeavor to entice away from the Company or its direct or indirect subsidiaries, or
otherwise interfere with the relationship of the Company or its direct or indirect

 - 13 - 

 

subsidiaries
with, (a) any person who is employed by the Company or its direct or indirect subsidiaries
(including any independent sales representatives or organizations), or (b) any client or customer
of the Company or its direct or indirect subsidiaries.

     7.5 Assignment of Developments. The Employee assigns and agrees to assign without
further compensation to the Company and its successors, assigns or designees, all of the Employee’s
right, title and interest in and to all Business Opportunities and Intellectual Property (as those
terms are defined below), and further acknowledges and agrees that all Business Opportunities and
Intellectual Property constitute the exclusive property of the Company.

     For purposes of this Agreement, “Business Opportunities” means all business ideas,
prospects, proposals or other opportunities pertaining to the lease, acquisition, exploration,
production, gathering or marketing of hydrocarbons and related products and the exploration
potential of geographical areas on which hydrocarbon exploration prospects are located, which are
developed by the Employee during the Employment Term, or originated by any third party and brought
to the attention of the Employee during the Employment Term, together with information relating
thereto (including, without limitation, geological and seismic data and interpretations thereof,
whether in the form of maps, charts, logs, seismographs, calculations, summaries, memoranda,
opinions or other written or charted means).

     For purposes of this Agreement, “Intellectual Property” shall mean all ideas,
inventions, discoveries, processes, designs, methods, substances, articles, computer programs and
improvements (including, without limitation, enhancements to, or further interpretation or
processing of, information that was in the possession of the Employee prior to the date of this
Agreement), whether or not patentable or copyrightable, which do not fall within the definition of
Business Opportunities, which the Employee discovers, conceives, invents, creates or develops,
alone or with others, during the Employment Term, if such discovery, conception, invention,
creation or development (A) occurs in the course of the Employee’s employment with the Company, or
(B) occurs with the use of any of the time, materials or facilities of the Company or its direct or
indirect subsidiaries, or (C) in the good faith judgment of the Board, relates or pertains in any
material way to the purposes, activities or affairs of the Company or its direct or indirect
subsidiaries.

     7.6 Injunctive Relief. The Employee acknowledges that a breach of any of the covenants
contained in this Section 7 may result in material, irreparable injury to the Company for
which there is no adequate remedy at law, that it may not be possible to measure damages for such
injuries precisely and that, in the event of such a breach or threat of breach, the Company may be
entitled to obtain a temporary restraining order and/or a preliminary or permanent injunction
restraining the Employee from engaging in activities prohibited by this Section 7 or such
other relief as may be required to specifically enforce any of the covenants in this Section
7. To the extent that the Company seeks a temporary restraining order (but not a preliminary or
permanent injunction), the Employee agrees that a temporary restraining order may be obtained ex
parte, to the extent provided by Texas law.

     7.7 Adjustment of Covenants. The parties consider the covenants and restrictions
contained in this Section 7 to be reasonable. However, if and when any such covenant or
restriction is found to be void or unenforceable and would have been valid had some part of it been
deleted or had its scope of application been modified, such covenant or restriction will be deemed
to have been applied with such modification as would be necessary and consistent with the intent of
the parties to have made it valid, enforceable and effective.

 - 14 - 

 

     7.8 Forfeiture Provision.

     (a) Detrimental Activities. If the Employee engages in any activity that violates any
covenant or restriction contained in this Section 7, in addition to any other remedy
the Company may have at law or in equity, (i) the Employee will be entitled to no further
payments or benefits from the Company under this Agreement or otherwise, except for any
payments or benefits required to be made or provided under applicable law, (ii) all
unexercised Unit options, restricted Units and other forms of equity compensation held by or
credited to the Employee will terminate effective as of the date on which the Employee
engages in that activity, unless terminated sooner by operation of another term or condition
of this Agreement or other applicable plans and agreements, and (iii) any exercise, payment
or delivery pursuant to any equity compensation award that occurred within one year prior to
the date on which the Employee engages in that activity may be rescinded within one year
after the first date that a majority of the members of the Board first became aware that the
Employee engaged in that activity. In the event of any such rescission, the Employee will
pay to the Company the amount of any gain realized or payment received as a result of the
rescinded exercise, payment or delivery, in such manner and on such terms and conditions as
may be required.

     (b) Right of Set-Off. The Employee consents to a deduction from any amounts the Company
owes the Employee from time to time (including amounts owed as wages or other compensation,
fringe benefits, or vacation pay, as well as any other amounts owed to the Employee by the
Company), to the extent of the amounts the Employee owes the Company under Section
7.8(a) above. Whether or not the Company elects to make any set-off in whole or in part,
if the Company does not recover by means of set-off the full amount the Employee owes,
calculated as set forth above, the Employee agrees to pay immediately the unpaid balance to
the Company. In the discretion of the Board, reasonable interest may be assessed on the
amounts owed, calculated from the later of (i) the date the Employee engages in the
prohibited activity and (ii) the applicable date of exercise, payment or delivery.

     (c) Forfeiture by Company. In the event that Company fails to timely and fully pay to
Employee all Severance Benefits or Change of Control Benefits due under this Agreement, then
Company shall forfeit all right to enforce this Article 7.

8. Miscellaneous.

     8.1 Assignment; Successors; Binding Agreement. This Agreement may not be assigned by
either party, whether by operation of law or otherwise, without the prior written consent of the
other party, except that any right, title or interest of the Company arising out of this Agreement
may be assigned to any corporation or entity controlling, controlled by, or under common control
with the Company, or succeeding to the business and substantially all of the assets of the Company
or any affiliates for which the Employee performs substantial services. Subject to the foregoing,
this Agreement will be binding upon and will inure to the benefit of the
parties and their respective heirs, legatees, devisees, personal representatives, successors
and assigns.

     8.2 Modification and Waiver. Except as otherwise provided below, no provision of this
Agreement may be modified, waived, or discharged unless such waiver, modification or discharge is
duly approved by the Board and is agreed to in writing by the Employee and such officer(s) as may
be specifically authorized by the Board to effect it. No waiver by any party of

 - 15 - 

 

any breach by any
other party of, or of compliance with, any term or condition of this Agreement to be performed by
any other party, at any time, will constitute a waiver of similar or dissimilar terms or conditions
at that time or at any prior or subsequent time.

     8.3 Entire Agreement. This Agreement embodies the entire understanding of the parties
hereof, and, upon the Effective Date, will supersede all other oral or written agreements or
understandings between them regarding the subject matter hereof. No agreement or representation,
oral or otherwise, express or implied, with respect to the subject matter of this Agreement, has
been made by either party which is not set forth expressly in this Agreement.

     8.4 Governing Law. The validity, interpretation, construction and performance of this
Agreement will be governed by the laws of the State of Texas other than the conflict of laws
provision thereof.

     8.5 Consent to Jurisdiction and Service of Process.

     (a) Section 7 Disputes. In the event of any dispute, controversy or claim between the
Company and the Employee arising out of or relating to the interpretation, application or
enforcement of the provisions of Section 7, the Company and the Employee agree and
consent to the personal jurisdiction of the state district courts located within Harris
County, Texas and/or the United States District Court for the Southern District of Texas,
Houston Division for resolution of the dispute, controversy or claim, and that those courts,
and only those courts, shall have any jurisdiction to determine any dispute, controversy or
claim related to, arising under or in connection with Section 7 of this Agreement.
The Company and the Employee also agree that those courts are convenient forums for the
parties to any such dispute, controversy or claim and for any potential witnesses and that
process issued out of any such court or in accordance with the rules of practice of that
court may be served by mail or other forms of substituted service to the Company at the
address of its principal executive offices and to the Employee at his last known address as
reflected in the Company’s records.

     (b) Disputes Other Than Under Section 7. In the event of any dispute relating to this
Agreement, other than a dispute relating solely to Section 7, the parties will use
their best efforts to settle the dispute, claim, question, or disagreement. To this effect,
they will consult and negotiate with each other in good faith and, recognizing their mutual
interests, attempt to reach a just and equitable solution satisfactory to both parties. If
such a dispute cannot be settled through negotiation, the parties agree first to try in good
faith to settle the dispute by mediation administered by the American Arbitration
Association under its Employment Mediation Procedures before resorting to arbitration,
litigation, or some other dispute resolution procedure. If the parties do not reach such
solution through negotiation or mediation within a period of sixty (60) days, then, upon
notice by either party to the other, all disputes, claims, questions, or differences shall
be resolved exclusively by arbitration administered by the American Arbitration Association
under the Employment Arbitration Rules and before a single neutral arbitrator. If
arbitration is elected by one party, the other is bound to submit itself and all
disputes to arbitration. The arbitrator will be selected by agreement of the parties or, if
they do not agree on an arbitrator within thirty (30) days after either party has notified
the other of his or its desire to have the question settled by arbitration, then the
arbitrator will be selected pursuant to the Employment Arbitration Rules of the American
Arbitration Association. The decision of the Arbitrator shall be final and binding, and may
be enforced in any

 - 16 - 

 

court with jurisdiction. Unless otherwise mutually agreed by the parties
in writing, any such arbitration shall take place in Houston, Texas.

     8.6 Taxes. The Company will withhold from any amounts payable under the Agreement all
federal, state, local or other taxes as legally will be required to be withheld.

     8.7 Notices. All notices, consents, waivers, and other communications under this
Agreement must be in writing and will be deemed to have been duly given when (a) delivered by hand
(with written confirmation of receipt), (b) sent by facsimile (with written confirmation of
receipt), provided that a copy is mailed by registered mail, return receipt requested, or (c) when
received by the addressee, if sent by a nationally recognized overnight delivery service (receipt
requested), in each case to the appropriate addresses and facsimile numbers set forth below (or to
such other addresses and facsimile numbers as a party may designate by notice to the other
parties):

to the Company, to:

Attn: General Counsel

Linn Energy, LLC

650 Washington Road, Suite 800

Pittsburgh, Pennsylvania 15228

to the Employee, to:

                                       &
nbsp;                    

                                       &
nbsp;                    

                                       &
nbsp;                    

Addresses may be changed by written notice sent to the other party at the last recorded address of
that party.

     8.8 Severability. The invalidity or unenforceability of any provision or provisions of
this Agreement will not affect the validity or enforceability of any other provision of this
Agreement, which will remain in full force and effect.

     8.9 Counterparts. This Agreement may be executed in one or more counterparts, each of
which will be deemed to be an original but all of which together will constitute one and the same
instrument.

     8.10 Headings. The headings used in this Agreement are for convenience only, do not
constitute a part of the Agreement, and will not be deemed to limit, characterize, or affect in any
way the provisions of the Agreement, and all provisions of the Agreement will be construed as if no
headings had been used in the Agreement.

     8.11 Construction. As used in this Agreement, unless the context otherwise requires:
(a) the terms defined herein will have the meanings set forth herein for all purposes; (b)
references to “Section” are to a section hereof; (c) “include,” “includes” and “including” are
deemed to be followed by “without limitation” whether or not they are in fact followed by such
words or words of like import; (d) “writing,” “written” and comparable terms refer to printing,
typing, lithography and other means of reproducing words in a visible form; (e) “hereof,” “herein,”
“hereunder” and comparable terms refer to the entirety of this Agreement and not to

 - 17 - 

 

any particular
section or other subdivision hereof or attachment hereto; (f) references to any gender include
references to all genders; and (g) references to any agreement or other instrument or statute or
regulation are referred to as amended or supplemented from time to time (and, in the case of a
statute or regulation, to any successor provision).

     8.12 Capacity; No Conflicts. The Employee represents and warrants to the Company that:
(i) he has full power, authority and capacity to execute and deliver this Agreement, and to perform
his obligations hereunder, (ii) such execution, delivery and performance will not (and with the
giving of notice or lapse of time, or both, would not) result in the breach of any agreement or
other obligation to which he is a party or is otherwise bound, and (iii) this Agreement is his
valid and binding obligation, enforceable in accordance with its terms. Michael C. Linn warrants
and represents that he has actual authority to enter into this Agreement as the authorized act of
the indicated entities.

 - 18 - 

 

     IN
WITNESS WHEREOF, the parties have duly executed this Agreement as of
the 22nd day of
November, 2006.

	 	 	 	 	 	 	 
	 	 	LINN OPERATING, INC.	 	 
	 
	 	 	 	 	 	 
	 

	 	By:	 	/s/ Michael C. Linn	 	 
	 

	 	 	 	 	 	 
	 

	 	Name:
	 	Michael C. Linn	 	 
	 

	 	Title:
	 	Chairman, President and Chief Executive
Officer	 	 
	 
	 	 	 	 	 	 
	 	 	EMPLOYEE	 	 
	 
	 

	 	/s/ Mark E. Ellis
	 

	 	 
	 	 	 
	 

	 	Mark E. Ellis	 	 
	 
	 	 	 	 	 	 
	 	 	For the limited purposes set forth herein:	 	 
	 
	 	 	 	 	 	 
	 	 	LINN ENERGY, LLC	 	 
	 
	 	 	 	 	 	 
	 

	 	By:	 	/s/ Michael C. Linn	 	 
	 

	 	 	 	 	 	 
	 

	 	Name:
	 	Michael C. Linn	 	 
	 

	 	Title:
	 	Chairman, President and Chief Executive
Officer	 	 

 - 19 -EX-10.1

 

Exhibit 10.1

MEMBERSHIP INTEREST PURCHASE
AGREEMENT 

by and between

DQE FINANCIAL CORP.

and

BLUE WOLF ENERGY HOLDINGS LLC

relating to

MONTAUK ENERGY CAPITAL, LLC

Dated as of November 22, 2006

 

 

MEMBERSHIP INTEREST PURCHASE AGREEMENT

     THIS MEMBERSHIP INTEREST PURCHASE
AGREEMENT (this “Agreement”), dated as of November
22, 2006, is made by and between DQE FINANCIAL CORP., a Delaware corporation, with its principal
offices located at 411 Seventh Avenue, Pittsburgh, PA 15219
(“Seller”), and BLUE WOLF ENERGY
HOLDINGS LLC, a Delaware limited liability company, with its principal offices located at One
Liberty Plaza, 23rd Floor, New York NY 10006
(“Purchaser”). Seller and Purchaser are
sometimes referred to individually as a “Party” and
collectively as the “Parties.”

W I T N
E S S E T H:

     WHEREAS, Seller owns 100% of
the outstanding membership interests in Montauk Energy Capital,
LLC, a Delaware limited liability company
(“Montauk”); and

     WHEREAS, Montauk
owns both directly and indirectly, and wholly and partially, equity interests
in the Subsidiaries (as defined herein); and

     WHEREAS, Seller desires to sell to Purchaser, and Purchaser desires to purchase from Seller,
all of the membership interests in Montauk, for the consideration and upon the terms and subject to
the conditions set forth in this Agreement.

     NOW, THEREFORE, in consideration of the foregoing and the mutual covenants and agreements
contained in this Agreement, and intending to be legally bound hereby, the Parties agree as
follows:

ARTICLE I

Definitions and Construction

     1.1
Definitions. In addition to the terms defined elsewhere in this Agreement,
the following words and phrases shall have the following meanings:

          “Additional
Employees” has the meaning specified in Section 4.19(b) hereof.

          “Affiliate” means, with respect to any Person, any individual or entity that, directly or
indirectly, through one or more intermediaries, controls, is controlled by or is under common
control with such Person. As used in this definition, “control” means the direct or indirect
ownership of 50% or more of the outstanding capital stock or other equity interests having ordinary
voting power.

          “Annual
Incentive Plan” means the annual incentive bonus plan sponsored by Seller for
its eligible non-union employees.

 

 

          “Applicable Law” means any federal, state, local or international statute, law,
ordinance, rule or regulation applicable to Seller, the Companies or the Business.

          “Benefit Plans” means, collectively, all “employee pension benefit plans” (as defined
in Section 3(2) of ERISA), including multiemployer plans (as defined in Section 3(37) of ERISA and
Section 4001(a)(3) of ERISA), all “employee welfare benefit plans” (as defined in Section 3(1) of
ERISA) and all bonus, stock option, stock purchase, deferred compensation plans or arrangements and
other employee fringe benefit plans, which in each case are or were sponsored, maintained or
contributed to by DLH or any ERISA Affiliate for the benefit of the Company Employees.

          “Bonds” has the meaning specified in Section 8.15 hereof.

          “Business” means the Companies’ operations in the landfill gas-to-energy business
(including electrical production, medium Btu processing, high Btu pipeline quality production and
liquefied natural gas business), the development, operation and maintenance of landfill gas
collection systems and gas purification facilities.

          “Business Day” means any day other than Saturday, Sunday and any day that in the
Commonwealth of Pennsylvania or the State of 
New York is a legal holiday or a day on which banking
institutions are permitted to be closed.

          “Capital Expenditures” means amounts paid by Seller or its Affiliates (including the
Companies) for those capital projects of the Companies identified on Schedule 1.1-A hereto.

          “Capital Expenditures Target” means $6,724,000 which is the aggregate of the targeted
Capital Expenditures to be made between November 1, 2006 and December 31, 2006, as set forth on
Schedule 1.1-A hereto.

          “Cash Equivalents” means the sum of the cash and cash equivalents of the Companies
reflected as “cash” on the consolidated balance sheet of the Companies prepared in accordance with
GAAP, applied on a basis consistent with the preparation of the Financial Statements, but excluding
the Hedge Cash Proceeds.

          “Closing” means the closing of the sale and purchase of the Purchased Interests
pursuant to this Agreement.

          “Closing Capital Expenditures” means the aggregate amount of Capital Expenditures made
during the period commencing on November 1, 2006 and ending as of the close of business on the day
immediately prior to the Closing Date.

          “Closing Certificate” has the meaning specified in Section 2.6(a) hereof.

2

 

          “Closing Date” means the date mutually selected by the Parties which is not later than
five Business Days after the earliest date on which the conditions specified in Sections 7.1(b) and
7.2(b) hereof have been satisfied, or such other date as the Parties may mutually agree.

          “Closing Indebtedness” means the amount (supported by payoff letters, as
appropriate) of Indebtedness, as of the close of business on the day immediately prior to the
Closing.

          “Closing
Statement Review” has the meaning specified in Section 2.7 hereof.

          “Closing Working Capital” means Working Capital as of the close of business on the
day immediately prior to the Closing Date; provided, however, that Closing Working Capital shall
not include Liabilities included in the computation of Closing Indebtedness.

          “COBRA” has the meaning specified in Section 4.15(g)
hereof.

          “Code” means the Internal Revenue Code of 1986, as
amended.

          “Companies” means, collectively, Montauk and the
Subsidiaries.

          “Company Assets” means all assets owned or leased by the Companies and used in the
Business.

          “Company Employees” has the meaning specified in Section 8.9(a) hereof.

          “Confidentiality Agreement” means that certain Non-Disclosure Agreement dated as of
October 5, 2006 between Financial Advisor, on behalf of Seller, and Blue-Wolf Capital Management
LLC.

          “Contract”
means any contract, agreement, indenture, note, bond, loan,
instrument, option, lease, conditional sales contract, sales and purchase order, mortgage, license,
franchise, insurance policy, understanding, commitment or other arrangement or agreement, whether
written or oral.

          “DLH” means Duquesne Light Holdings, Inc., which owns all of the issued and
outstanding stock of Seller.

          “DLH Guaranty” means that certain Guaranty dated as of the Closing Date and executed
by DLH in favor of the Purchaser Indemnified Parties, substantially in the form attached as
Exhibit A hereto.

          “DOJ” has the meaning specified in Section 8.3(b) hereof.

          “Environmental Laws” has the meaning specified in the definition of Hazardous
Materials.

3

 

          “ERISA” means the Employee Retirement Income Security Act of 1974, as amended.

          “ERISA Affiliate” means any other Person that, together with DLH, is required to be
treated as a single employer under Section 414 of the Code or Section 4001(a)(14) of ERISA.

          “Estimated Closing Capital Expenditures” means the amount estimated by Seller to be
the amount of Closing Capital Expenditures, as set forth on the Closing Certificate.

          “Estimated Closing Indebtedness” means the amount estimated by Seller to be the amount
of Closing Indebtedness, as set forth on the Closing Certificate.

          “Estimated Closing Working Capital” means the amount estimated by Seller to be the
amount of Closing Working Capital, as set forth on the Closing Certificate.

          “Existing Litigation” has the meaning specified in Section 9.1 (d) hereof.

          “Federal Power Act” means the Federal Power Act, as amended, and the rules and
regulations promulgated thereunder.

          “FERC” means the U.S. Federal Energy Regulatory Commission, and any successor
agency thereto.

          “Final Order” means action by the relevant Governmental Entity which has not been
reversed, stayed, enjoined, set aside, annulled or suspended, with respect to which any waiting
period prescribed by law before the transactions contemplated hereby may be consummated has
expired, and as to which all conditions of such transactions prescribed by law, regulation or order
have been satisfied.

          “Final Purchase Price” has the meaning specified in Section 2.8
hereof.

          “Financial Advisor” means Ewing Bemiss & Co.

          “Financial Statements” means, collectively, (i) the consolidated balance sheets of the
Companies as of December 31, 2004 and 2005, and the related consolidated statements of income and
cash flow for the years then ended and (ii) the consolidated balance sheet of the Companies as of
October 31, 2006, and the related consolidated statements of income and cash flow for the ten-month
period then ended (collectively, the “Interim Statements”).

          “FTC” has the meaning specified in Section 8.3 (b) hereof.

          “GAAP” means United States generally accepted accounting principles.

          “Governmental Entity” means any federal, state, local or foreign government or any
court of competent jurisdiction, administrative agency or commission or other governmental
authority or instrumentality, domestic or foreign.

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          “GSF Letter of Credit” has the meaning specified in Section 8.12
hereof.

          “GSF Payment Bond” has the meaning specified in Section
8.12 hereof.

          “Hazardous Materials” means hazardous wastes, hazardous substances, hazardous
constituents, toxic substances or related materials, whether solids, liquids or gases including but
not limited to substances defined as “PCBs,” “hazardous wastes,” “hazardous substances,” “toxic
substances,” “pollutants,” “contaminants,” “radioactive materials,” “petroleum,” or other similar
designations in, or otherwise subject to regulation under, the Comprehensive Environmental
Response, Compensation and Liability Act of 1980, as amended by the Superfund Amendments and
Reauthorization Act of 1986 (“CERCLA”), 42 U.S.C. §
9601 et seq.; the Toxic Substance Control Act
(“TSCA”), 15 U.S.C. § 2601 et seq.; the
Resource Conservation and Recovery Act (“RCRA”), 42 U.S.C.
§ 9601; the Clean Water Act (“CWA”), 33 U.S.C.
§ 1251 et seq.; the Safe Drinking Water Act, 42
U.S.C.§ 300f et seq.; the Clean Air Act
(“CAA”), 42 U.S.C. § 7401 et seq.; or any similar state
law; and in the plans, rules, regulations or ordinances adopted, or other criteria and guidelines
promulgated pursuant to the preceding laws or other similar laws, regulations, rules or ordinances,
in each case as in effect as of the date of this Agreement
(collectively, the “Environmental
Laws”); and any other substances, constituents or wastes subject to environmental regulations under
any applicable federal, state or local law, regulation or ordinance in effect as of the date of
this Agreement.

          “Hedge Cash Proceeds” has the meaning specified in Section 2.6(b)(v) hereof.

          “HSR Act” shall mean the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as
amended.

          “Indebtedness” means, without duplication, the sum of (i) the principal amount of any
indebtedness of the Companies (to the extent of Seller’s interest therein) for borrowed money
outstanding immediately prior to the Closing, together with all prepayment premiums or penalties
and other amounts becoming due as a result of the transactions contemplated by this Agreement, (ii)
any unpaid interest owing on any such indebtedness of the Companies (to the extent of Seller’s
interest therein), (iii) amounts owed as of the Closing with respect to any capital lease
obligations of the Companies (to the extent of Seller’s interest therein), (iv) all liabilities of
the Companies (to the extent of Seller’s interest therein) to pay for the deferred purchase or
acquisition price of property, services or businesses which are accrued or required to be accrued
under GAAP, other than trade accounts payables or expenses in the ordinary course of business
consistent with past practice, (v) indebtedness of others guaranteed by the Companies (to the
extent of Seller’s interest therein) or secured by a Lien on any of the Company Assets, or (vi) any
receivables or payables owed by any of the Companies to Seller or any Affiliate of Seller (other
than the Companies).

          “Indemnified Party” has the meaning specified in Section 9.4(a)
hereof.

          “Indemnifying Party” has the meaning specified in Section
9.4(a) hereof.

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          “Independent Accountants” has the meaning specified in Section 2.7 hereof.

          “Intellectual Property Rights” means all of the Companies’ patents, trademarks, trade
secrets, service marks, trade names, copyrights, inventions, drawings, designs, customer lists,
proprietary know-how or information or other rights with respect thereto used in the Business as
currently conducted.

          “Interim Working Capital” means $2,415,076, the calculation of which is set forth on
Schedule 1.1-B hereto.

          “ISRA” has the meaning specified in Section 8.3(c) hereof.

          “JP Morgan Hedge” has the meaning specified in Section 7.1(h) hereof.

          “Leases” has the meaning specified in Section 4.6(a) hereof.

          “Liability” means any liability (whether known or unknown, whether asserted or
unasserted, whether absolute or contingent, whether accrued or unaccrued, whether liquidated or
unliquidated, and whether due or to become due), including, without limitation, any liability for
Taxes.

          “Liens” means mortgages, liens, security interests, charges or encumbrances of any
kind.

          “Losses” means, collectively, all losses, liabilities, claims, damages and expenses
(including reasonable legal fees and expenses).

          “Material Adverse Effect” means (a) a result or consequence that would materially
adversely affect the condition (financial or otherwise), results of operations or business of the
Companies or the aggregate value of their assets, or could reasonably be expected to materially
impair the ability of the Companies to own, hold, develop and operate their assets, in each case
taken as a whole; or (b) a result or consequence that could reasonably be expected to materially
impair Seller’s ability to perform its obligations hereunder or consummate the transactions
contemplated hereby.

          “Material Contract” has the meaning specified in Section 4.8(a)
hereof.

          “Montauk” has the meaning specified in the Recitals to this
Agreement.

          “Owned Real Property” has the meaning specified in
Section 4.6(b) hereof.

          “Partially Owned Subsidiaries” means, collectively, Apollo Energy III, LLC;
Magellan-Montauk LFG, LLC; and, prior to the consummation of the Synfuels Divestiture,
Montauk Synfuels, LLC.

          “Party” has the meaning specified in the Recitals to this Agreement.

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          “Permits” means the certificates, licenses, permits, authorizations and approvals
issued or granted to the Companies by Governmental Entities.

          “Permitted Liens” mean (i) mechanics’, carriers’, workmen’s, warehousemen’s,
repairmen’s or other like liens arising in the ordinary course of business, (ii) liens arising
under any original purchase price conditional sales contracts and equipment leases with third
parties entered into in the ordinary course of business, (iii) liens for Taxes and other
governmental obligations not yet due and payable or which hereafter may be paid without penalty and
(iv) other imperfections of title, restrictions or encumbrances, if any, which do not materially
impair the operation or continued use of the specific assets to which they relate.

          “Person” means any natural person, corporation, firm, joint venture, partnership,
limited liability company, association, enterprise, trust or other entity or organization or any
Governmental Entity.

          “Post-Closing Tax Periods” has the meaning specified in Section 8.1l(a)
hereof.

          “Pre-Closing Tax Periods” has the meaning specified in Section 8.11 (a)
hereof.

          “Preliminary Purchase Price” has the meaning specified in Section 2.6(b)
hereof.

          “Prorated Payment” has the meaning specified in Section 8.9(k) hereof.

          “Purchase Price” has the meaning specified in Section 2.2 hereof.

          “Purchased Interests” means 100% of the membership interests in Montauk.

          “Purchaser” has the meaning specified in the Recitals to this Agreement.

          “Purchaser Agreements” has the meaning specified in Section 7.2(e) hereof.

          “Purchaser Employee Plans” has the meaning specified in Section 8.9(c)
hereof.

          “Purchaser Indemnified Parties” has the meaning specified in Section 9.1
hereof.

          “Purchaser Replaced Bonds” has the meaning specified in Section 8.15 hereof.

          “Representatives” means, with respect to a particular Person, any director, officer,
manager, employee, agent, consultant, advisor, accountant, legal counsel or other representative of
that Person.

          “Required Statutory Approvals” has the meaning specified in Section 3.3
hereof.

          “Securities Act” means the Securities Act of 1933, as amended.

          “Seller” has the meaning specified in the Recitals to this Agreement.

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          “Seller Agreements” has the meaning specified in Section 7.1 (e)
hereof.

          “Seller Employee Plans” has the meaning specified in Section 8.9(c)
hereof.

          “Seller Indemnified Parties” has the meaning specified in Section 9.2
hereof.

          “Seller Retained Bonds” has the meaning specified in Section 8.15
hereof.

          “Seller Required Consents” has the meaning specified in Section 3.3
hereof.

          “Straddle Period” means any taxable period beginning before and ending on or after the
Closing Date.

          “Subsidiaries” has the meaning specified in Section 4.2 hereof.

          “Synfuels Divestiture” has the meaning specified in Section 8.14
hereof.

          “Synfuels Entities” means, collectively, Montauk Synfuels, LLC, Pace Carbon Synfuels,
L.P. and Pace Carbon Fuels, L.L.C.

          “Tax” means (i) any tax, governmental fee or other like assessment or charge of any
kind whatsoever (including any tax imposed under Subtitle A of the Code and any net income,
alternative or add-on minimum tax, gross income, gross receipts, sales, use, ad valorem, value
added, transfer, franchise, profits, license, withholding tax on amounts paid, payroll, employment,
excise, severance, stamp, capital stock, occupation, property, environmental or windfall profit
tax, premium, customs, duty or other tax), together with any interest, penalty, addition to tax or
other additional amount, in each case imposed by any Governmental Entity, (ii) any liability for
the payment of any amount of the type described in clause (i) above as a result of a Person being a
member of an affiliated, consolidated or combined group with any other entity at any time on or
prior to the date of this Agreement and (iii) any liability of any Person with respect to the
payment of any amount of the type described in clause (i) or (ii) above as a result of any express
or implied obligation of such Person to indemnify or reimburse any other Person.

          “Tax Credits” has the meaning specified in Section 4.13(1) hereof.

          “Tax Return” means all returns, declarations, reports, forms, estimates, information
returns, statements or other documents (including any schedule, attachment and related supporting
information) filed or required to be filed with or supplied to any Governmental Entity in
connection with any Taxes, and including any amendments thereof.

          “Third Party Claim” has the meaning specified in Section 9.4(a)
hereof.

          “Unadjusted Purchase Price” means $116,600,000.

8

 

          “Warn Act” has the meaning specified in Section 8.9(i) hereof.

          “Working Capital” means the excess as of the close of business on the day
immediately prior to the Closing Date of (i) the Companies’ (to the extent of Seller’s
interest therein) current assets (including any Cash Equivalents) over (ii) the Companies’ (to
the extent of Seller’s interest therein) current liabilities (excluding any Indebtedness and
any amounts owed to Seller or Affiliates of Seller (other than the Companies)), each as
determined in accordance with GAAP; provided, however, that Working Capital shall not include
(x) any Indebtedness or other liabilities satisfied as part of the Closing or (y) any
receivables or payables which are eliminated pursuant to Section 8.8 hereof. For the
elimination of doubt, obligations of the Companies immediately prior to the Closing Date
related to employee bonuses, severance, vacation, obligations under any benefit/insurance
plans and other similar items, including the items contemplated in Sections 8.9(e) and 8.9(k)
hereof, shall be included as current liabilities in the calculation of Working Capital.

     1.2
Knowledge. Whenever any representation or warranty of Seller contained in
this Agreement or in any schedule, exhibit or other document delivered in connection with this
Agreement is qualified to the “knowledge” of Seller, such qualification means the actual
knowledge, after due inquiry, of John R. Schmitt, Michael W. Rodgers, James A. Greenwell,
G.R. O’Mahony, Daniel L. Bonk, Martin L. Ryan, Traci L. Spooner, Renee A. Voyt, Richard
K. Wilcox, Joseph Sziveri and Gary L. Valdez. For purposes of this Section 1.2, “due
inquiry”
means the conduct of a reasonable investigation concerning the existence of certain facts
or other
matters, including, where appropriate, the making of a reasonably diligent inquiry of
those
employees of the Seller and/or the Companies with principal day-to-day operational
responsibility with respect to such facts or matters.

     1.3 Limitations on Provisions relating to Partially Owned Subsidiaries.
Notwithstanding anything to the contrary herein, (a) all representations and warranties
of Seller contained in this Agreement or in any schedule, exhibit or other document delivered in
connection with this Agreement which relate to the Partially Owned Subsidiaries (other
than representations and warranties regarding Seller’s indirect ownership interest in the
Partially Owned Subsidiaries) are deemed to be made to, and are qualified in their entirety by, the
knowledge of Seller; (b) all covenants and agreements of Seller contained in this Agreement or
in any schedule, exhibit or other document delivered in connection with this Agreement which
relate to the Partially Owned Subsidiaries are made subject to the qualification that Seller
indirectly owns only a 50% membership interest in each Partially Owned Subsidiary and, as a
result, does not control the Partially Owned Subsidiaries; and (c) Seller does not make any
representation, warranty or covenant regarding the entities which own the other 50% membership
interest in each Partially Owned Subsidiary.

9

 

ARTICLE II

Sale and Purchase of Purchased Interests; Closing

     2.1 Sale and Purchase of the Purchased Interests. Subject to the terms and conditions
of this Agreement, on the Closing Date, Seller will sell to Purchaser, and Purchaser will purchase
from Seller, the Purchased Interests.

     2.2
Purchase Price. In consideration for the Purchased Interests and the fulfillment
of the obligations set forth herein, Purchaser shall pay Seller the
Unadjusted Purchase Price,
subject to the adjustments required to be made pursuant to
Sections 2.6 and 2.8 (the “Purchase
Price”).

     2.3 Payment of Preliminary Purchase Price. The Preliminary Purchase Price, determined
in accordance with Section 2.6 hereof, shall be payable by Purchaser to Seller at the Closing.

     2.4 Closing. The Closing shall be held at the offices of Seller located at 411 Seventh
Avenue, Pittsburgh, Pennsylvania, or at such other location as the Parties mutually may agree, at
10:00 a.m. on the Closing Date. The Closing shall be effective as of 12:01 a.m. on the Closing
Date.

     2.5 Deliveries at Closing. At the Closing, the following shall occur:

          (a) Seller shall deliver to Purchaser the following items:

          (i) an assignment of membership interest relating to the Purchased Interests;

          (ii) resignations of all managers, directors and officers, as applicable, of the
Companies (or, in the case of the Partially Owned Subsidiaries, those managers designated or
appointed by Montauk), in each case effective as of the Closing; and

          (iii) the Seller Agreements and all other items Seller is required to deliver
pursuant to Section 7.1 hereof.

          (b) Purchaser shall deliver to Seller the following items:

          (i) the Preliminary Purchase Price, by wire transfer at the Closing to an
account specified by Seller (which account shall be specified by Seller no later than two
Business Days prior to the Closing Date); and

          (ii) the Purchaser Agreements and all other items Purchaser is required to deliver
pursuant to Section 7.2 hereof.

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     2.6 Purchase Price Adjustments.

          (a) Closing Certificate. At least two Business Days prior to the Closing, Seller shall
deliver to Purchaser a certificate (the “Closing
Certificate”), which certificate shall set forth
Seller’s best estimate of the Estimated Closing Indebtedness, Estimated Closing Working Capital and
Estimated Closing Capital Expenditures.

          (b)
Closing Adjustments and Determination of Preliminary Purchase Price. The cash
portion of the Purchase Price payable to Seller at the Closing pursuant to Section 2.3 hereof shall
be determined as follows:

          (i) Funded Indebtedness. The portion of the Purchase Price payable at the
Closing pursuant to Section 2.3 hereof will be reduced, on a dollar-for-dollar basis, by the
amount of Estimated Closing Indebtedness assumed or paid by Purchaser, if any, in cash by
wire transfer of funds to the accounts of the holders of Indebtedness listed on Schedule
2.6(b) hereto as necessary to fully satisfy the Companies’ Indebtedness with such
holders.

          (ii) Working Capital. The portion of the Purchase Price payable at the
Closing pursuant to Section 2.3 hereof will be adjusted, on a dollar-for-dollar basis, (A)
downward by the amount, if any, by which the Estimated Closing Working Capital is less than
the Interim Working Capital, or (B) upward by the amount, if any, by which the Estimated
Closing Working Capital is more than the Interim Working Capital.

          (iii) Capital Expenditures. The portion of the Purchase Price payable at
the Closing pursuant to Section 2.3 hereof will be adjusted, on a dollar-for-dollar basis,
(A) downward by the amount, if any, by which the Estimated Closing Capital Expenditures is
less than the Capital Expenditures Target, or (B) upward by the amount, if any, by which the
Estimated Closing Capital Expenditures is more than the Capital Expenditures Target.

          (iv) Put Options. The portion of the Purchase Price payable at the
Closing pursuant to Section 2.3 hereof will be reduced, on a dollar-for-dollar basis, by
fifty percent (50%) of the aggregate purchase price as of the Closing Date of the put
options described on, and determined in accordance with, Schedule 2.6(b)(iv)
hereto.

          (v) Hedging Proceeds. The portion of the Purchase Price payable at the
Closing pursuant to Section 2.3 hereof will be adjusted, on a dollar-for-dollar basis, (A)
downward by the amount, if any, by which the net cash proceeds received by the Companies as
a result of the unwinding and termination of the JP Morgan Hedge (the
“Hedge Cash Proceeds”)
are less than $4,000,000, or (B) upward by the amount, if any, by which the Hedge Cash
Proceeds are more than $4,000,000.

The Purchase Price, as adjusted pursuant to the foregoing clauses (i) through (v) shall be referred
to as the “Preliminary Purchase Price.”

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     2.7 Post-Closing Review and Final Adjustments to Purchase Price. Within 60 days
following the Closing Date, there shall be delivered to Seller a computation schedule, together
with supporting documentation therefor, of the actual (as opposed to estimated) Closing
Indebtedness, Closing Working Capital and Closing Capital Expenditures (the “Closing
Statement Review”). The Closing Statement Review shall be prepared by Purchaser, at Purchaser’s
sole cost and expense, in accordance with GAAP and in accordance with the computations of the
various estimates made by Seller at Closing pursuant to Section 2.6 hereof. In the event Seller
disputes any item(s) on the Closing Statement Review within 15 days after Seller’s receipt thereof,
and such dispute is not resolved within 15 days after Seller’s notification to Purchaser of the
existence of the dispute, the Parties shall jointly retain Schneider Downs, an independent
accounting firm (the “Independent Accountants”), to review the disputed item(s) on the Closing
Statement Review. The final determination of such disputed item(s) by the Independent Accountants
shall be binding on the parties. The cost of retaining the Independent Accountants shall be borne
50% by Purchaser and 50% by Seller.

     2.8 Payment of Final Adjusted Purchase Price. The amount paid to Seller at Closing as
the Preliminary Purchase Price shall be adjusted following the Closing as a result of the Closing
Statement Review process set forth in Section 2.7 hereof as follows:

     (i) downward by the amount, if any, by which the Estimated Closing
Indebtedness is less than the Closing Indebtedness;

     (ii) upward by the amount, if any, by which the Estimated Closing
Indebtedness is more than the Closing Indebtedness;

     (iii) upward by the amount, if any, by which the Estimated Closing Working Capital
is less than the Closing Working Capital;

     (iv) downward by the amount, if any, by which the Estimated Closing Working
Capital is more than the Closing Working Capital;

     (v) upward by the amount, if any, by which the Estimated Closing Capital
Expenditures is less than the Closing Capital Expenditures; or

     (vi) downward by the amount, if any, by which the Estimated Closing Capital
Expenditures is more than the Closing Capital Expenditures.

The Preliminary Purchase Price, as adjusted pursuant to the foregoing clauses (i) through (vi),
shall be referred to as the “Final Purchase Price.” If the Final Purchase Price is less
than the Preliminary Purchase Price as a result of the aggregate amount of such adjustments, the
differential shall be payable by Seller to Purchaser. If the Final Purchase Price is greater than
the Preliminary Purchase Price as a result of such adjustments, the differential shall be payable
by Purchaser to Seller. Such payments shall be made within five Business Days following the
expiration of Seller’s 15-day period for delivering a notice of a dispute under Section 2.7 hereof
if no such dispute was raised, or if such a notice of a dispute was delivered, then such payment
shall be made within five Business Days following resolution of such dispute in accordance with

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the terms of Section 2.7 hereof. Any payment made pursuant to this Section 2.8 shall be made by
wire transfer of immediately available funds to an account designated by the receiving Party. The
provisions of Sections 2.6, 2.7 and 2.8 hereof shall not be subject to, and Claims thereunder shall
not be subject to (and shall not be included in the calculation of the aggregate amount of any
Claims that are subject to), the limitations set forth in Article IX hereof.

ARTICLE III

Seller’s Representations and Warranties Regarding Seller

     Seller hereby makes the following representations and warranties regarding Seller to
Purchaser, each of which is true and correct on the date hereof (except where specifically provided
otherwise) and will be true and correct on the Closing Date, and each of which shall survive the
Closing Date and the transactions contemplated hereby to the extent set forth in Section 11.3
hereof:

     3.1
Due Organization and Standing. Seller is a duly organized corporation, validly
existing and in good standing under the laws of the State of Delaware.

     3.2 Authority; Execution and Delivery; Enforceability. Seller has full corporate power
and authority to execute and deliver this Agreement and the Seller Agreements and to consummate the
transactions contemplated hereby and thereby. The execution and delivery by Seller of this
Agreement and the Seller Agreements and the consummation by Seller of the transactions contemplated
hereby and thereby have been duly authorized by all necessary corporate action on the part of
Seller. Seller has duly executed and delivered this Agreement and will duly execute and deliver
each Seller Agreement. This Agreement constitutes, and each Seller Agreement, when duly executed
and delivered by Seller, shall constitute, the legal, valid and binding obligation of Seller,
enforceable against Seller in accordance with its terms, except as the enforceability thereof may
be limited by bankruptcy, insolvency, reorganization, moratorium and other similar laws now or
hereafter in effect relating to creditors’ rights and by general principles of equity.

     3.3
No Conflicts; Consents. The execution and delivery by Seller of this Agreement and
the Seller Agreements, the consummation by Seller of the transactions contemplated hereby and
thereby and compliance by Seller with the terms hereof and thereof do not and will not conflict
with, or result in any violation of or default (with or without notice or lapse of time, or both)
under, or give rise to a right of termination, cancellation or acceleration of any obligation or to
loss of a material benefit under, or result in the creation of any Lien upon any of the properties
or assets of Seller under, any provision of (i) the organizational documents of Seller or the
Companies, (ii) any contract, agreement or instrument to which Seller or any of the Companies is a
party or by which any of their properties or assets is bound or (iii) any judgment, order or decree
applicable to Seller or the Companies or any Applicable Law, other than, in the case of clauses
(ii) and (iii) above, (x) any such items that, individually or in the aggregate, have not had and
could not reasonably be expected to have a Material Adverse Effect, (y) the Required Statutory
Approvals and (z) the Seller Required Consents. Except as disclosed on
Schedule 3.3-A hereto with respect to Governmental Entities (collectively, the
“Required Statutory Approvals”) and on Schedule 3.3-B hereto with respect to
any other Person

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(collectively, the “Seller Required Consents”), no consent, approval, license, permit,
order or authorization of, or registration, declaration or filing with, any Governmental Entity or
any other Person, respectively, is required to be obtained or made by or with respect to Seller or
the Companies in connection with Seller’s execution and delivery of this Agreement or the Seller
Agreements or the consummation by Seller of the transactions contemplated hereby and thereby, other
than any such items which if not obtained or made, individually or in the aggregate, have not had
and could not reasonably be expected to have a Material Adverse Effect.

     3.4 Litigation. There is no action, suit or proceeding pending or, to Seller’s
knowledge, threatened against Seller that questions the validity of this Agreement or any Seller
Agreement or the right of Seller to enter into such agreements or consummate the transactions
contemplated hereby or thereby.

ARTICLE IV

Seller’s Representations and Warranties Regarding the Companies

     Seller hereby makes the following representations and warranties regarding the Companies to
Purchaser, each of which is true and correct on the date hereof (except where specifically provided
otherwise) and will be true and correct on the Closing Date, and each of which shall survive the
Closing Date and the transactions contemplated hereby to the extent set forth in Section 11.3
hereof:

     4.1 Due Organization, Standing and Power.

          (a) Montauk is a duly formed limited liability company, validly existing and in good standing
under the laws of the State of Delaware. Montauk has full limited liability company power and
authority and possesses all governmental franchises, licenses, permits, authorizations and
approvals necessary to enable it to own, lease or otherwise hold its assets and to conduct the
Business it presently conducts, other than such franchises, licenses, permits, authorizations and
approvals the lack of which, individually or in the aggregate, has not had and could not reasonably
be expected to have a Material Adverse Effect. Montauk is duly qualified to do business as a
foreign limited liability company in each jurisdiction where the character of the assets held by it
or the nature of the Business conducted by it make such qualification necessary for it to conduct
the Business as currently conducted by it, except where the failure to so qualify would not have a
Material Adverse Effect. Seller has delivered or made available to Purchaser true, accurate and
complete copies of Montauk’s certificate of formation, operating agreement, and minute books
relating to meetings of the managers and member of Montauk, and membership interest transfer
records, which books and records are complete and correct in all material respects.

          (b) Each of the Subsidiaries is duly formed or organized, validly existing and in good
standing under the laws of the state set forth on Schedule 4.2 hereto. Each Subsidiary has
full limited liability company or corporate, as applicable, power and authority and possesses all
governmental franchises, licenses, permits, authorizations and approvals necessary to enable it to
own, lease or otherwise hold its assets and to conduct the Business it presently conducts, other

14

 

than such franchises, licenses, permits, authorizations and approvals the lack of which,
individually or in the aggregate, has not had and could not reasonably be expected to have a
Material Adverse Effect. Each Subsidiary is duly qualified to do business as a foreign limited
liability company or corporation, as applicable, in each jurisdiction where the character of the
assets held by it or the nature of the Business conducted by it make such qualification necessary
for it to conduct the Business as currently conducted by it, except where the failure to so qualify
would not have a Material Adverse Effect. Seller has delivered or made available to Purchaser true,
accurate and complete copies of each Company’s organizational documents and minute books relating
to meetings of the managers, directors and members, as applicable, of such Company, and membership
interest or stock, as applicable, transfer records, which books and records are complete and
correct in all material respects.

     4.2 Subsidiaries.

     (a) As of the date of this Agreement, except for (i) the entities listed on
Schedule 4.2 hereto, which include the Partially Owned Subsidiaries (collectively,
the “Subsidiaries”), and (ii) Montauk Synfuels, LLC’s ownership of a 8.325% limited
partnership interest in Pace Carbon Synfuels Investors, L.P., the Companies do not own
equity in or control, directly or indirectly, any other corporation, association, limited
liability company, limited partnership or any other business entity, and do not participate
in any partnership, joint venture or similar arrangement.

     (b) As of the Closing Date, except for the entities listed on Schedule 4.2
hereto (but not including Montauk Synfuels, LLC), the Companies do not own equity in or
control, directly or indirectly, any other corporation, association, limited liability
company, limited partnership or any other business entity, and do not participate in any
partnership, joint venture or similar arrangement.

     4.3 Capitalization.

          (a) Seller owns 100% of the membership interests in Montauk. There are no outstanding rights,
options, warrants, conversion rights or agreements for the purchase or acquisition of any
membership interests or other securities of Montauk.

          (b) Schedule 4.2 hereto lists, with respect to each Subsidiary, (i) the type of
entity, (ii) the state of organization or formation, (iii) the states where qualified to do
business as a foreign entity, (iv) such Subsidiary’s issued and outstanding equity securities and
the holders of such securities and (v) any outstanding rights, options, warrants, conversion rights
or agreements for the purchase or acquisition of any equity interests or other securities of such
Subsidiary.

     4.4 Financial Statements; Liabilities. The Financial Statements (including the notes
thereto, if any), complete and correct copies of which are attached as Schedule 4.4 hereto,
have been prepared from and in accordance with the books and records of the Companies and present
fairly, in all material respects, the financial position and results of operations of the Companies
as of the dates and for the periods indicated, in conformity with GAAP, consistently applied during
such periods, except as otherwise stated in the Financial Statements or in the notes thereto, if
any,

15

 

subject, in the case of the Interim Statements, to (a) normal and recurring year-end adjustments
and (b) the lack of footnote disclosures. The Companies have no Liability (and, to the knowledge of
Seller, there is no basis for any present or future action, suit, proceeding, hearing,
investigation, charge, complaint, claim, or demand against the Companies giving rise to any
Liability) except for (i) Liabilities set forth or reflected in the Financial Statements, (ii)
Liabilities arising after the date of the most recent Interim Statement which have arisen in the
ordinary course of business, (iii) contractual Liabilities arising in the ordinary course of
business which are not required to be set forth or reflected in the Financial Statements, (iv)
Liabilities otherwise disclosed in this Agreement and (v) other Liabilities which do not exceed
$25,000 in the aggregate.

     4.5 Title to Assets. Each Company has good and valid title to all of its assets, in
each case free and clear of all Liens, except (a) Permitted Liens and (b) the rights of lessors in
and to leased assets.

     4.6 Real Property.

          (a) Other than the Companies’ interest in various sites pursuant to Material Contracts listed
on Schedule 4.8 hereto, all real property leases to which any Company is a party are listed
on Schedule 4.6(a) hereto (collectively, the “Leases”). Each Lease is valid,
binding and in full force and effect and enforceable by such Company in accordance with its terms.
All material obligations required to be performed by such Company to date under the Leases have
been performed, and such Company is not (with or without the lapse of time or the giving of notice,
or both) in breach or default in any material respect thereunder. To the knowledge of Seller, no
other party to any Lease is (with or without the lapse of time or the giving of notice, or both) in
breach or default in any material respect thereunder. No Company has received written notice of the
intention of any party to terminate any Lease. Complete and correct copies of all Leases, together
with all modifications and amendments thereto, have been delivered or made available to Purchaser.

          (b) Except for the properties described on Schedule 4.6(b) hereto (collectively, the
“Owned Real Property”), the Companies do not own real property. Waste Energy Technology,
LLC has good and marketable title to the Owned Real Property, and owns the Owned Real Property free
and clear of all Liens other than Permitted Liens. Seller has delivered or made available to
Purchaser copies of the most recent title work, survey and deed, if any, in Seller’s possession
relating to the Owned Real Property.

     4.7 Intellectual Property Rights.

          (a) The Companies own or possess adequate licenses or other rights to use their respective
material Intellectual Property Rights. To the knowledge of Seller, the operation of the Business as
now conducted does not and will not conflict with or infringe any proprietary rights owned or
possessed by any third party.

          (b) There are no claims, disputes, actions, proceedings, suits or appeals pending against the
Companies with respect to any Intellectual Property Rights (other than those,

16

 

if any, with respect to which service of process or similar notice has not yet been made on the
Companies), and, to the knowledge of Seller, none has been threatened against the Companies. To the
knowledge of Seller, there are no facts or alleged facts which reasonably would serve as a basis
for any claim that any Company does not have the right to use any of its Intellectual Property
Rights in the development, manufacture, use, sale or other disposition of any or all products or
services presently being used, furnished or sold in the conduct of its respective Business.

          (c) To the knowledge of Seller, none of the Intellectual Property Rights has been
infringed by third parties.

     4.8 Contracts.

          (a) Schedule 4.8 hereto sets forth a true and complete (except where such
Contract is disclosed elsewhere on a Schedule to this Agreement) list of each of the following
Contracts to which any Company is a party, or by which any Company or any of its assets is bound
(collectively, the “Material Contracts”):

          (i) any Contract relating to landfill gas rights, landfill gas (or other energy)
development and production, landfill gas (or other energy) sales, power purchase, and
operations and maintenance;

          (ii) any Contract involving the expenditure by any Company of more than $100,000
in any instance (or any Contract involving aggregate expenditures by any Company of more
than $250,000), including for the purchase of materials, goods, supplies, equipment,
services or assets;

          (iii) any Contract with any supplier or vendor containing any provision permitting
any party other than the Companies to renegotiate the price or other terms, or containing
any pay-back or other similar provision, upon the occurrence of a failure by any Company to
meet its obligations under the Contract when due or the occurrence of any other event;

          (iv) any outstanding guarantee, subordination agreement and indemnity agreement,
whether or not entered into in the ordinary course, under which any Company is or may become
liable for or obligated to discharge, or any asset of any Company is or may become subject
to the satisfaction of, any indebtedness, obligations, performance or undertaking of other
Persons involving the potential expenditure by any Company of more than $25,000 in any
instance (or any such guarantee, subordination agreement or indemnity agreement involving
the potential aggregate expenditure by any Company of more than $100,000);

          (v) any Contract relating to indebtedness for borrowed money (whether incurred,
assumed, guaranteed or secured by any asset), including notes, indentures, mortgages, deeds
of trust, loan or credit agreements, capital and equipment leases, letters of credit,
pledge agreements, security agreements, factoring agreements or other Contracts for or
relating to the incurrence of indebtedness;

17

 

          (vi) any Contract with respect to any hedging, swap, forward, future or derivative
transaction or option or similar agreement involving, or settled by reference to, one or more
rates, currencies, commodities, equity or debt instruments or securities, or economic, financial or
pricing indices or measures of economic, financial or pricing risk or value or any similar
transaction or any combination of these transactions;

          (vii) any partnership, limited liability company, joint venture agreement, management
Contract, or other Contract involving a sharing of profits or expenses by any Company;

          (viii) any Contract relating to a pending acquisition or disposition of any business (whether
by merger, consolidation, reorganization, sale of stock, sale of assets or otherwise) or securities
or other equity interests;

          (ix) any marketing, sales, franchise, distribution, commission, dealer, agency,
representative, consulting or similar Contract which is exclusive or pursuant to which any Company
is obligated to pay an amount in excess of $25,000 during any calendar year (or any such Contract
providing for aggregate payments by any Company in excess of $100,000);

          (x) any Contract between any Company and Seller or an Affiliate of Seller (other than the
Companies);

          (xi) any outstanding power-of-attorney empowering any Person not a current employee of
any Company to act on behalf of any Company;

          (xii) any employee collective bargaining agreement with any labor union or employees
covering former, current or future employees of any Company or work done, being done or to be done
in the future by any Company;

          (xiii) any confidentiality agreement, non-competition, non-solicitation, no-hire,
stand-still agreement or other Contract that restricts any Company from engaging in any line of
business in any geographic area or competing with any Person;

          (xiv) any employment Contract;

          (xv) any Contract for the payment or receipt of license fees, commissions or royalties to
or from any Person anticipated to be in excess of $25,000 individually or on an annual basis (or
any such Contract providing for aggregate payments to or from any Person anticipated to be in
excess of $100,000);

          (xvi) any Contract among members or stockholders or granting preemptive rights, a
right of first refusal, registration rights or similar rights, or with respect to voting of
securities of or equity interests in any Company;

          (xvii) any Contract with any Governmental Entity;

18

 

          (xviii) any Contract with respect to the discharge, storage or removal of Hazardous
Materials;

          (xix) any other material Contract not made in the ordinary course of business;
and

          (xx) any binding commitment or agreement to enter into any of the foregoing.

          (b) Except as disclosed on Schedule 4.8 hereto, (i) all of the Material Contracts
are valid, binding and in full force and effect and are enforceable by the Company party thereto in
accordance with their respective terms; (ii) each Company has performed all material obligations
required to be performed by it to date under the Material Contracts to which it is a party, and it
is not (with or without the lapse of time or the giving of notice, or both) in breach or default in
any material respect thereunder; (iii) to the knowledge of Seller, no other party to any Material
Contract is (with or without the lapse of time or the giving of notice, or both) in breach or
default in any material respect thereunder; and (iv) no Company has received written notice of the
intention of any party to terminate any Material Contract. Complete and correct copies of all
Material Contracts, together with all modifications and amendments thereto, have been delivered or
made available to Purchaser.

          (c) Schedule 3.3-B hereto sets forth each Material Contract with respect to
which the consent of the other party or parties thereto is required by virtue of the execution and
delivery of this Agreement to avoid the termination thereof, a breach, violation or default
thereunder or any other change or modification to the terms thereof, other than any such consent
which if not obtained, individually or in the aggregate, could not reasonably be expected to have a
Material Adverse Effect.

     4.9 Condition of Assets. Except as disclosed on Schedule 4.9 hereto, all
Company Assets are in good operating condition and repair, reasonable wear and tear excepted, and
subject to assets which are not utilized from time to time due to surplus, salvage or routine
maintenance.

     4.10 Permits. Except as disclosed on Schedule 4.10 hereto, the Companies
possess all material Permits that are necessary or desirable for the conduct of their Business. The
Companies, as applicable, validly hold all such Permits and have complied in all material respects
with all terms and conditions thereof. Except as disclosed on Schedule 4.10 hereto, no
Company has received, subsequent to December 31, 2003, written notice of any proceedings relating
to the revocation or modification of any such Permit. To the knowledge of Seller, none of the
Permits will be subject to suspension, modification, revocation or non-renewal as a result of the
execution and delivery of this Agreement or consummation of the transactions contemplated hereby.

     4.11 Insurance. An Affiliate of Seller and certain of the Companies maintain the
insurance policies disclosed on Schedule 4.11 hereto for fire and casualty, liability,
directors’ and officers’ liability and miscellaneous professional liability that provide coverage
for the Companies with respect to their Business in such amounts, with such deductibles and against
such risks and losses as are, in Seller’s judgment, reasonable for their Business. All such
policies

19

 

are in full force and effect, all premiums due and payable thereon have been paid, and no written
notice of cancellation or termination has been received with respect to any such policy that has
not been replaced on substantially similar terms prior to the date of such cancellation. To the
knowledge of Seller, the Business has been conducted in a manner so as to conform in all material
respects to all applicable provisions of such insurance policies. At the Closing, coverage with
respect to the Companies under the insurance policies maintained by Seller, the Companies or any of
their Affiliates shall be terminated for periods after the Closing Date; provided, however that all
insurance policies maintained by any Partially Owned Subsidiary shall not be terminated and shall
remain in full force and effect after the Closing Date.

     4.12 Sufficiency of Assets. The Company Assets comprise all the assets employed by the
Companies in connection with the Business. The Company Assets are sufficient for the conduct of the
Business by the Companies immediately following the Closing in substantially the same manner as
currently conducted.

     4.13
Taxes. Except as disclosed on Schedule 4.13 hereto:

          (a) The Companies, and any affiliated group, within the meaning of
Section 1504 of the Code, of which any Company is or has been a member, have filed or caused to be
filed in a timely manner (within any applicable extension periods), all Tax Returns. All Taxes
shown to be due on such returns, reports and forms have been timely paid in full or will be timely
paid in full by the due date thereof. No Liens for Taxes have been filed against the Company
Assets.

          (b) For federal, state, local and foreign income Tax purposes: (i) all of the membership
interests in Montauk are directly owned by Seller and Seller has, at all times during which Montauk
has been a limited liability company, treated Montauk as a “disregarded entity” of Seller; (ii)
Seller has, at all times during which each limited liability company Subsidiary has been a limited
liability company, treated each limited liability company Subsidiary (the membership interests in
which are directly or indirectly wholly owned by Montauk) as a “disregarded entity” of Seller;
(iii) Seller has at all times treated the capital stock of each C corporation Subsidiary as
directly owned by Seller; (iv) Seller has at all times treated its direct or indirect membership
interests in each Partially Owned Subsidiary as directly owned by Seller; and (v) Seller has at all
times treated each limited liability company Subsidiary (the membership interests in which are
directly or indirectly wholly owned by a Partially Owned Subsidiary) as a “disregarded entity” of
such Partially Owned Subsidiary.

          (c) Seller is not a “foreign person” within the meaning of Section 1445 of the Code.

          (d) The Companies will not be required to include any item of income in, or exclude any
item of deduction from, taxable income for any taxable period (or portion thereof) ending after the
Closing Date as a result of (i) any change in method of accounting adopted prior to the Closing
Date; (ii) any “closing agreement” as described in Section 7121 of the Code (or any corresponding
similar provision of state, local or foreign income Tax law) executed prior to the Closing Date;
(iii) any deferred intercompany gain or any excess loss account described under

20

 

Section 1502 of the Code and the regulations promulgated thereunder relating to a period prior to
the Closing Date; (iv) any installment sale or open transaction disposition made prior to the
Closing Date; or (v) any prepaid amount received prior to the Closing Date.

          (e) The Companies have not entered into any compensatory agreements that would result in a
nondeductible expense pursuant to Section 280G of the Code

          (f) To the knowledge of Seller, there are no actions by any Governmental Entity in connection
with assessing additional Taxes against or in respect of any of the Companies for any past period.
There is no dispute or claim concerning any Tax liability of the Companies either (i) pending, or
to the knowledge of Seller, threatened by any Governmental Entity or (ii) of which the Seller
otherwise has knowledge. There are no liens for Taxes upon the assets or properties of the
Companies other than liens for Taxes not yet due and payable. No audit or other proceedings by any
Governmental Entity is pending or, to the knowledge of Seller, threatened with respect to any Taxes
due from or with respect to the Companies.

          (g) There are no outstanding agreements or waivers extending the statutory period of
limitation applicable to any Tax Returns required to be filed by, or that include or are treated as
including, the Companies or with respect to any Tax assessment or deficiency affecting the
Companies.

          (h) The Companies have no liability for the Taxes of any Person other than the Companies
(i) under Section 1.1502-6 of the Treasury regulations (or any similar provision of state, local or
foreign law), (ii) as a transferee or successor, or (iii) by contract or otherwise.

          (i) The Companies have not agreed to make nor are required to make any adjustment
under Section 481 of the Code.

          (j) The Companies are not a party to or bound by any obligations under any tax
sharing, tax allocation, tax indemnity or similar agreement or arrangement.

          (k) There is currently no limitation on the utilization of the net operating losses,
built-in losses, capital losses, Tax credits or other similar items of the Companies under (i)
Section 382 of the Code, (ii) Section 383 of the Code, (iii) Section 384 of the Code, and (iv)
Section 1502 of the Code and Treasury regulations promulgated thereunder.

          (1) All federal and state tax credits (“Tax Credits”) earned or received by any of the
Companies prior to the Closing Date, or to which any of the Companies is entitled for any period
ending prior to the Closing Date, are valid and enforceable by the Companies, and no Company has
any Liability to any Governmental Entity with respect to such Tax Credits or to Tax Credits claimed
by any Affiliate of any of the Companies.

          (m) The Companies and their Affiliates, as applicable, have withheld and paid all Taxes
required to have been withheld and paid in connection with any amounts paid or owing to any
employee, independent contractor, creditor, stockholder, or third party performing services for the
Companies, and all Forms W-2 and 1099 and other forms required with respect thereto have been
properly completed and timely filed with the applicable Governmental Entity.

21

 

          (n) No Company has been the distributing corporation with respect to a transaction
described in Section 355 of the Code within the three-year period ending on the date of this
Agreement.

     4.14 Litigation. There is no action, suit or proceeding pending against any Company
or, to the knowledge of Seller, threatened against any Company, that questions the validity of this
Agreement. Except as disclosed on Schedule 4.14 hereto, (a) there is no action, suit or
proceeding pending or, to the knowledge of Seller, threatened against any Company, other than
actions, suits or proceedings which are covered by insurance and are subject to deductibles of
$25,000 or less individually and $50,000 or less in the aggregate; (b) no Company is a party to or
subject to the provisions of any writ, injunction, judgment, order or decree of any court or other
Governmental Entity; and (c) there is no action, suit, proceeding or investigation by any Company
against a third party currently pending or, to the knowledge of Seller, which any Company currently
intends to initiate.

     4.15 Benefit Plans. Except as disclosed on Schedule 4.15 hereto:

          (a) No Company maintains or contributes to any Benefit Plans.

          (b) Each Benefit Plan has been operated in all material respects in accordance with Applicable
Law (including ERISA and the Code), the plan documents thereof and collective bargaining
agreements, if any. Each Benefit Plan that is intended to be qualified under Section 401 (a) of the
Code has received a favorable determination letter from the Internal Revenue Service indicating
that such Benefit Plan is so qualified and, to the knowledge of Seller, nothing has occurred
subsequent to the issuance of such determination letter which would cause such Benefit Plan to lose
its qualified status. To the knowledge of Seller, no act or omission has occurred and no condition
exists with respect to any Benefit Plans that would subject Purchaser to any fine, penalty, Tax or
Liability, of any kind imposed under ERISA, the Code or other Applicable Law following the Closing.

          (c) There are no material undisclosed liabilities in respect of the Benefit Plans with
respect to which Purchaser reasonably could be expected to be liable.

          (d) No Company has contributed to any multi-employer plans, as defined in Section 3(37) of
ERISA, that would subject Purchaser to any liability.

          (e) There is no litigation or administrative or other proceedings involving any Benefit Plan,
and no Company has received, subsequent to December 31, 2005, any written notice that any such
proceeding is threatened, in each case that would have or reasonably would be expected to have a
Material Adverse Effect.

          (f) No employee or former employee of any Company will become entitled to any bonus,
retirement, severance, job security or similar benefit or any enhanced benefit solely as a result
of the transactions contemplated hereby and which is payable by any Company out of its general
assets.

22

 

          (g) None of the Benefit Plans provides for post-employment life or health insurance,
benefits or coverage for any Company Employee participant or any Company Employee beneficiary of
any Company Employee participant, except as required under the Consolidated Omnibus Budget
Reconciliation Act of 1985, as amended (“COBRA”).

          (h) To the knowledge of Seller, neither Seller, any Company, the Benefit Plans, nor any
employee of the foregoing, nor any trustee, administrator or other fiduciary of a Benefit Plan has
engaged in a “prohibited transaction” (as such term is defined in Section 4975 of the Code or
Section 406 of ERISA) which could subject any party to the tax or penalty on prohibited
transactions imposed by the Code or the sanctions imposed under Title 1 or ERISA.

          (i) To the knowledge of Seller, no Benefit Plan subject to Title IV of ERISA has
incurred nor will the transactions contemplated by this Agreement give rise to any liability,
contingent liability or withdrawal liability to the Pension Benefit Guaranty Corporation other than
for the payment of premiums, all of which have been paid when due. No Benefit Plan has applied for
or received a waiver of the minimum funding standards imposed by Code Section 412.

          (j) To the knowledge of Seller, each Benefit Plan which is a “non-qualified deferred
compensation Plan” (within the meaning of Section 409A of the Code) has been operated in compliance
with Section 409A of the Code and subsequent guidance.

     4.16 Absence of Changes or Events. Except as disclosed on Schedule 4.16 hereto, since
December 31, 2005, there has not been any material adverse change in the assets, condition
(financial or otherwise) or results of operations of the Companies or in the Business, taken as a
whole, other than changes relating to the economy in general or the landfill gas industry in
general, and not specifically relating to the Companies. Except as disclosed on Schedule 4.16
hereto, since December 31, 2005, the Companies have caused their respective Business to be
conducted in the ordinary course and in substantially the same manner as previously conducted and
have made all reasonable efforts consistent with past practices to preserve the relationships of
their respective Business with customers, suppliers and others with which they conduct business.

     4.17 Governmental Regulation. Except as set forth on Schedule 4.17 hereto, the
Companies are not subject to regulation under (a) the Public Utility Holding Company Act of 1935,
as amended, (b) the Federal Power Act, (c) the National Gas Act, as amended, or (d) the Natural Gas
Policy Act, as amended, or subject to regulation as an “electric utility”, “electric corporation”,
“electrical company”, “electric utility company”, electric utility holding company”, “public
utility”, “holding company”, “public utility holding company”, “public service corporation”, “gas
utility”, “gas company” or the equivalent under any Applicable Law. No Company is an “investment
company”, an “investment advisor” or a company “controlled” by an “investment company” within the
meaning of the Investment Company Act of 1940, as amended.

     4.18 Compliance with Applicable Laws. Except as disclosed on Schedule 4.20
hereto, each Company is in compliance in all material respects with all Applicable Laws, including
those

23

 

relating to occupational health and safety. Except as disclosed on Schedule 4.20 hereto, no
Company has received, subsequent to December 31, 2003, any written communication from a
Governmental Entity that alleges that its Business has failed to comply in any material respect
with any Applicable Laws. Except as disclosed on Schedule 4.20 hereto, no Company has
received, subsequent to December 31, 2003, any written notice that any investigation or review by
any Governmental Entity is pending (and remains pending as of the date hereof) with respect to such
Company or its Business or that any such investigation or review is contemplated.

     4.19 Labor Matters.

          (a) No Company is subject to any suit, action or proceeding which is pending or, to the
knowledge of Seller, threatened asserting that any Company has committed unfair labor practices
(within the meaning of the National Labor Relations Act or applicable state statutes) or seeking to
compel any Company to bargain with any labor organization as to the terms and conditions of
employment. No strike, lockout or other work stoppage or material labor dispute involving any
Company is pending or, to the knowledge of Seller, threatened, and there is no current petition,
proceeding or similar activity involving any employees of the Companies seeking to certify a
collective bargaining unit or engaging in any organizational activity. No Company is bound by any
collective bargaining agreement or other contract with a labor union or labor organization. The
Companies have complied in all material respects with all laws relating to employment, wages,
hours, collective bargaining arrangements and payment of social security or similar Taxes, and no
Person has asserted that any Company is liable for any arrears of wages, Taxes or penalties for
failure to comply with any of the foregoing laws.

          (b) Schedule 4.19 hereto contains an accurate and complete list of (i) all of the
employees of the Companies as of the date of this Agreement and (ii) certain additional employees
of Seller or its Affiliates (other than the Companies) who perform services for the Companies
(collectively, the “Additional Employees,” and
identified as such on Schedule 4.19 hereto),
as well as each such employee’s hire date, job title and work location.

          (c) The Companies are in compliance in all material respects with all laws, rules,
regulations and orders relating to the employment of labor, including all such laws, rules,
regulations and orders relating to wages, hours, discrimination, civil rights, safety and health,
workers’ compensation and the collection and payment of withholding or Social Security Taxes and
similar Taxes.

          (d) Except as set forth on Schedule 4.19 hereto, all of the Company
Employees are “at-will” employees with no employment contracts or material severance, change of
control or other such plans providing for payments or benefits to the employees with respect to the
transactions contemplated by this Agreement that would be materially different from the payment and
benefits that any of such employees would receive upon any termination of employment not with
respect to the transactions contemplated by this Agreement or any change of control.

24

 

     4.20 Environmental Matters. To the knowledge of Seller and except as disclosed on
Schedule 4.20 hereto:

          (a) Each Company is in compliance in all material respects with all applicable Environmental
Laws.

          (b) There has been no release or threatened release by any Company of any Hazardous Materials
on, upon, into or from any real property used by any Company in violation of applicable
Environmental Laws.

          (c) There have been no Hazardous Materials generated by any Company that have been disposed
of or come to rest at any site that has been included in any published U.S. federal, state or local
“superfund” site list or any other similar list of hazardous or toxic waste sites published by any
Governmental Entity in the United States.

          (d) Each Company has obtained and is in compliance with all material Permits that are
required pursuant to applicable Environmental Laws for the occupation and use by such Company of
its facilities and the operation of its Business.

          (e) No Company has received, subsequent to December 31, 2003, any written notice or report
regarding any actual or alleged violation of Environmental Laws by any Company, including any
investigation, remedial or corrective obligations relating to such Company or its Business arising
under Environmental Laws.

Notwithstanding anything to the contrary herein, this Section 4.20 constitutes the only
representations and warranties made by Seller with respect to environmental matters.

     4.21
Bank Accounts. Schedule 4.21 hereto sets forth a true and complete list of each
bank, deposit, lock-box or cash collection, management or other account of the Companies, including
the title and number of the account, the financial or other institution at which such account is
located and the list of approved signatories for check-writing or withdrawal authority in respect
of each such account (if applicable).

     4.22 Brokers. Neither Seller, the Companies or any Affiliate thereof has any contract,
arrangement or understanding with any investment banking firm, broker or finder with respect to the
transactions contemplated by this Agreement except for Financial Advisor, whose fees and expenses
shall be borne by Seller.

     4.23 Accounts Receivable. All of the accounts, notes and loans receivable that have
been recorded on the books of the Companies are bona fide and represent accounts, notes and loans
receivable validly due for goods sold, services rendered or other transactions occurring in the
ordinary course of business. None of such receivables is subject to any asserted claim of offset or
recoupment or counterclaim, and the Seller has no knowledge of any specific facts that would be
likely to give rise to any such claim or that any such receivable will not be collected in
accordance with its terms. No amount of such accounts receivable is contingent upon the performance
by the Companies of any obligation and no agreement for deduction or discount or

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any type of credit has been made with respect to any such accounts receivable. To the knowledge of
Seller, no account debtor of the Companies has proposed any material discount or reduction with
respect to such account debtor’s accounts receivable.

     4.24 Absence of Certain Business Practices. Neither the Companies, Seller nor, to the
knowledge of Seller, any of their respective officers, employees or agents nor any other Person
acting on any of their behalf, has, directly or indirectly, given or agreed to give any gift or
similar benefit (other than with respect to bona fide payments for which adequate consideration has
been given) to any customer, supplier, governmental employee or other Person who is or may be in a
position to help or hinder the business of the Companies (or assist the Companies in connection
with any actual or proposed transaction): (i) which might subject the Companies to any damage or
penalty in any civil, criminal or governmental litigation or proceeding; (ii) which, if not
continued in the future, would have a Material Adverse Effect or which would subject the Companies
to suit or penalty in any private or governmental litigation or proceeding; or (iii) for
establishment or maintenance of any concealed fund or concealed bank account.

     4.25 Disclosure. No representation or warranty of Seller set forth in this Agreement,
in any of the Schedules or Exhibits hereto, or in any of the other Seller Agreements, contains any
untrue statement of a material fact or omits to state a material fact necessary in order to make
the statements contained herein or therein not misleading in light of the circumstances in which
they are made.

ARTICLE V

Purchaser’s Representations and Warranties

     Purchaser hereby makes the following representations and warranties to Seller, each of which is
true and correct on the date hereof (except where specifically provided otherwise) and will be true
and correct on the Closing Date, and each of which shall survive the Closing Date and the
transactions contemplated hereby to the extent set forth in Section 11.3 hereof:

     5.1 Due Organization and Standing. Purchaser is a duly organized limited liability
company, validly existing and in good standing under the laws of the State of Delaware.

     5.2
Authority; Execution and Delivery; Enforceability. Purchaser has full limited
liability company power and authority to execute and deliver this Agreement and the Purchaser
Agreements and to consummate the transactions contemplated hereby and thereby. The execution and
delivery by Purchaser of this Agreement and the Purchaser Agreements and the consummation by
Purchaser of the transactions contemplated hereby and thereby have been duly authorized by all
necessary limited liability company action. Purchaser has duly executed and delivered this
Agreement and will duly execute and deliver each Purchaser Agreement. This Agreement constitutes,
and each Purchaser Agreement, when duly executed and delivered by Purchaser, shall constitute, the
legal, valid and binding obligation of Purchaser, enforceable against Purchaser in accordance with
its terms, except as the enforceability thereof may be limited by bankruptcy, insolvency,
reorganization, moratorium and other similar laws now or hereafter in effect relating to creditors’
rights and by general principles of equity.

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     5.3
No Conflicts; Consents. The execution and delivery by Purchaser of this Agreement
and the Purchaser Agreements, the consummation by Purchaser of the transactions contemplated hereby
and thereby and compliance by Purchaser with the terms hereof and thereof do not conflict with, or
result in any violation of or default (with or without notice or lapse of time, or both) under, or
give rise to a right of termination, cancellation or acceleration of any obligation or to loss of a
material benefit under or result in the creation of any Lien upon any of the properties or assets
of Purchaser under, any provision of (i) the organizational documents of Purchaser, (ii) any
contract, agreement or instrument to which Purchaser or any of its Affiliates is a party or by
which any of their respective properties or assets is bound or (iii) any judgment, order or decree
applicable to Purchaser or any of its Affiliates or any Applicable Law, other than, in the case of
clauses (ii) and (iii) above, (x) any such items that, individually or in the aggregate, have not
had and could not reasonably be expected to materially impair Purchaser’s ability to perform its
obligations hereunder or consummate the transactions contemplated by this Agreement, and (y) the
Required Statutory Approvals. Except for the Required Statutory Approvals, no consent, approval,
license, permit, order or authorization of, or registration, declaration or filing with, any
Governmental Entity or any other Person is required to be obtained or made by or with respect to
Purchaser or any of its Affiliates in connection with Purchaser’s execution, delivery and
performance of this Agreement or any Purchaser Agreement or the consummation by Purchaser of the
transactions contemplated hereby and thereby or the conduct by Purchaser of the Business following
the Closing as conducted on the date hereof.

     5.4 Litigation. There is no action, suit or proceeding pending or, to the knowledge
of Purchaser, threatened against Purchaser that questions the validity of this Agreement or any
Purchaser Agreement or the right of Purchaser to enter into such agreements or to consummate the
transactions contemplated hereby or thereby.

     5.5 Knowledge and Experience; Investment. Purchaser is an investor in securities of
companies in the development stage and acknowledges that it is able to fend for itself, can bear
the economic risk of its investment and has such knowledge and experience in financial or business
matters that it is capable of evaluating the merits and risks of an investment in the Purchased
Interests. Purchaser has been furnished with and has had access to such information as Purchaser
considered necessary to make an informed investment decision and determination as to the purchase
of the Purchased Interests. Purchaser is acquiring the Purchased Interests for investment and not
with a view to its sale or distribution other than a sale or distribution which is registered under
applicable securities laws or is exempt from such registration.

     5.6 Availability of Funds. Subject to the satisfaction of the conditions precedent
set forth in Sections 7.1(j) and 7.1(k) hereof, Purchaser has or has access to sufficient funds to
pay the Purchase Price and to consummate the transactions contemplated hereby.

     5.7 Disclosure. No representation or warranty of Purchaser set forth in this
Agreement or in any of the Schedules or Exhibits hereto, or in any of the other Purchaser
Agreements, contains any untrue statement of a material fact or omits to state a material fact
necessary in order to make the statements contained herein or therein not misleading in light of
the circumstances in which they are made.

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ARTICLE VI

Restrictions on Transfer of Purchased Interests

     6.1 Restricted Securities. Purchaser acknowledges that the Purchased Interests have
not been registered under the Securities Act and are “restricted securities” within the meaning of
Rule 144 promulgated under the Securities Act. The Purchased Interests may not be offered for sale,
sold or otherwise transferred except (i) pursuant to an effective registration statement under the
Securities Act covering the Purchased Interests, (ii) in compliance with the resale limitations of
Rule 144 or (iii) pursuant to an applicable exemption from registration under the Securities Act
and applicable state securities laws.

ARTICLE VII

Conditions to Closing

     7.1 Conditions to Purchaser’s Obligations. The obligations of Purchaser to purchase
the Purchased Interests at the Closing are subject to the fulfillment, on or prior to the Closing
Date, of the following conditions, any of which may be waived by Purchaser in its sole discretion
(other than the condition as to the Required Statutory Approvals):

          (a) Representations and Warranties; Obligations. All representations and warranties
made by Seller in this Agreement shall be true and correct in all material respects (or, to the
extent qualified by materiality within any such representation or warranty, true and correct in all
respects) when made and shall be true and correct in all material respects (or, to the extent
qualified by materiality within any such representation or warranty, true and correct in all
respects) on the Closing Date with the same force and effect as if they had been made as of the
Closing Date (except where they speak to a different date). Seller shall have performed all
obligations and conditions under this Agreement required to be performed or observed by Seller on
or prior to the Closing Date.

          (b) Consents and Waivers. All of the Required Statutory Approvals shall have been
obtained and shall have become Final Orders and, in the case of the FERC approval under Section 203
of the Federal Power Act, final and non-appealable, and all of the Seller Required Consents shall
have been obtained.

          (c) No Injunction or Restraints. No temporary restraining order, preliminary or
permanent injunction or other legal restraint or prohibition preventing or materially restricting
or altering the consummation of the transactions contemplated by this Agreement shall be in effect,
and there shall not be any pending action by or before any Governmental Entity challenging or
seeking to restrain or prohibit in any material respect or materially alter the consummation of the
transactions contemplated by this Agreement or seeking to obtain any damages from any of the
Parties in connection with the transactions contemplated by this Agreement.

          (d) Documents. All documents and instruments delivered by Seller shall be
satisfactory in substance and form to Purchaser and its counsel, and Purchaser and its counsel

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shall have received all such counterpart originals or certified or other copies of such documents
as they may reasonably request.

          (e) Seller Agreements. Seller shall have duly executed and delivered to Purchaser
the following agreements (collectively, the “Seller
Agreements”):

          (i) An officer’s certificate signed by a duly authorized officer of Seller and certifying as
to the satisfaction of the conditions set forth in Section 7.1 (a) hereof; and

          (ii) A certificate signed by the Secretary of Seller certifying as to the incumbency and
signature of the officer(s) of Seller executing this Agreement and the Seller Agreements and as to
the resolutions adopted by the board of directors of Seller authorizing the transactions
contemplated hereby and thereby.

          (f) [Intentionally Omitted]

          (g) Divestiture of Montauk Synfuels, LLC. Seller shall have caused Montauk to
transfer all of Montauk’s ownership interests in Montauk Synfuels, LLC to Seller in accordance with
Section 8.14 hereof and shall have delivered evidence thereof to Purchaser.

          (h) Hedging Arrangement. The hedging arrangements with JP Morgan Chase Bank, N.A.
identified on Schedule 4.8 hereto (the “JP Morgan
Hedge”) shall have been unwound at or
prior to the Closing, Seller shall have delivered evidence thereof to Purchaser in form and
substance reasonably satisfactory to Purchaser, and all Hedge Cash Proceeds shall have been
deposited and remain on deposit as of the Closing Date in one or more deposit accounts owned by the
Companies.

          (i) DLH Guaranty. DLH shall have executed and delivered to Purchaser the DLH Guaranty
on or prior to the Closing Date.

          (j) South African Reserve Bank. To the extent required by applicable law, the
transactions contemplated by this Agreement shall have been approved by the South African Reserve
Bank.

          (k) Performance of Lender. Purchaser’s lender shall have entered into definitive
agreements and made available to Purchaser the financing reflected in the executed commitment
letter addressed to Purchaser dated on or about the date hereof, a copy of which has been delivered
to Seller.

     7.2 Conditions to Seller’s Obligations. The obligations of Seller to sell and deliver
the Purchased Interests at the Closing are subject to the fulfillment, on or prior to the Closing
Date, of the following conditions, any of which may be waived by Seller in its sole discretion
(other than the condition as to the Required Statutory Approvals):

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          (a)
Representations and Warranties; Obligations. All representations and warranties
made by Purchaser in this Agreement shall be true and correct in all material respects (or, to the
extent qualified by materiality within any such representation or warranty, true and correct in all
respects) when made and shall be true and correct in all material respects (or, to the extent
qualified by materiality within any such representation or warranty, true and correct in all
respects) on the Closing Date with the same force and effect as if they had been made as of the
Closing Date. Purchaser shall have performed in all respects all obligations and conditions herein
required to be performed or observed by Purchaser under this Agreement on or prior to the Closing
Date.

          (b) Consents and Waivers. All of the Required Statutory Approvals shall have been
obtained and shall have become Final Orders and, in the case of the FERC approval under Section 203
of the Federal Power Act, final and non-appealable, and all of the Seller Required Consents shall
have been obtained.

          (c) No Injunction or Restraints. No temporary restraining order, preliminary or
permanent injunction or other legal restraint or prohibition preventing or materially restricting
or altering the consummation of the transactions contemplated by this Agreement shall be in effect,
and there shall not be any pending action by or before any Governmental Entity challenging or
seeking to restrain or prohibit in any material respect or materially alter the consummation of the
transactions contemplated by this Agreement or seeking to obtain any damages from any of the
Parties in connection with the transactions contemplated by this Agreement.

          (d) Documents. All documents and instruments delivered by Purchaser shall be
reasonably satisfactory in substance and form to Seller and its counsel, and Seller and its counsel
shall have received all such counterpart originals or certified or other copies of such documents
as they may reasonably request.

          (e) Purchaser Agreements. Purchaser shall have duly executed and delivered to Seller
the following agreements (collectively, the “Purchaser
Agreements”):

          (i) An officer’s certificate signed by a duly authorized officer of Purchaser and certifying
as to the satisfaction of the conditions set forth in Section 7.2(a) hereof; and

          (ii) A certificate signed by the Secretary of Purchaser certifying as to the incumbency and
signature of the officer(s) of Purchaser executing this Agreement and the Purchaser Agreements and
as to the resolutions adopted by the board of managers of Purchaser authorizing the transactions
contemplated hereby and thereby.

          (f) Terminations. Each of the guaranties, letters of credit and other agreements
disclosed on Schedule 7.2(f) hereto, to which Seller or an Affiliate of Seller (other than
the Companies) is a party, shall have been terminated, and Seller and such other Affiliates shall
have been released from all obligations thereunder.

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          (g) Release. Seller shall have received a full release from John Schmitt in form and
substance reasonably satisfactory to Seller.

ARTICLE VIII

Covenants

     8.1 Access Prior to Closing Date. Seller hereby covenants and agrees that during the
period from the date of this Agreement to the Closing Date, Seller shall cause the Companies to (a)
give Purchaser and its authorized representatives reasonable access to all books, records,
personnel, offices and other facilities and properties of the Companies, (b) permit Purchaser to
make such copies and inspections thereof as Purchaser may reasonably request and (c) furnish
Purchaser with such financial and operating data and other information with respect to the
Companies and the Business as Purchaser may from time to time
reasonably request; provided,
however, that the foregoing shall be conducted at Purchaser’s expense, at a reasonable time,
under the supervision of the personnel of Seller or the Companies, as the case may be, in
compliance with the Confidentiality Agreement and in such a manner as to maintain the
confidentiality of this Agreement and the transactions contemplated hereby and not to interfere
unreasonably with the normal operation of the Business.

     8.2 Pre-Closing Restrictions on Conduct of Business. Except (i) as otherwise
contemplated by this Agreement, (ii) as set forth on Schedule 8.2 hereto or (iii) with the
consent of Purchaser (which consent shall not be unreasonably withheld or delayed), Seller hereby
covenants and agrees that, during the period from the date of this Agreement to the Closing Date,
Seller shall cause the Companies to operate in the ordinary course of business consistent with past
practices, and shall not permit any Company to:

          (a) sell, license or dispose of any of its material properties or assets, except in the
ordinary course of business;

          (b) make any loans, advances (other than advances made in the ordinary course of business) or
capital contributions to, or investments in, any other Person;

          (c) make any change in any of its present accounting methods and practices, except as
required by changes in GAAP;

          (d) make or authorize any capital expenditures exceeding $50,000 individually or $150,000 in
the aggregate, unless such capital expenditure is contemplated by the Companies’ existing capital
expenditure budget (which has been delivered or made available to Purchaser);

          (e) settle or compromise any material Tax liability, except as is consistent with past
practice;

          (f) incur any Indebtedness, other than from intercompany loans between any Company and any
Affiliate thereof, issue any debt securities, assume, guarantee or endorse the

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obligations of any third party or mortgage or create any Liens on any of its properties or assets
other than Permitted Liens or immaterial Liens which do not restrict use or detract from value;

          (g) amend its certificate of organization, certificate of incorporation, operating agreement,
by-laws or other organizational document;

          (h) change its equity structure;

          (i) make any dividend or distribution to Seller or any other Affiliate of Seller, other than
with respect to the Cash Equivalents;

          (j) acquire or agree to acquire by merging or consolidating with or by purchasing the equity
of, or a substantial portion of the assets of, or by any other manner, any business or entity or
otherwise acquire or agree to acquire any assets (other than in the ordinary course of business);

          (k) acquire or invest in any new landfill gas-to-energy project or other energy project;

          (1) knowingly take any action that would cause any of Seller’s representations and warranties
set forth in Article IV hereof to become untrue in any material respect;

          (m) enter into any written employment agreement with any employee or increase in any material
respect the compensation of any officer or key employee of the Business;

          (n) adopt, grant, extend or increase the rate or terms of any bonus, insurance, pension or
other employee benefit plan, payment or arrangement made to, for, or with any officer or employee
of the Business or any other benefits payable in any other form by Seller or the Companies; or

          (o) agree to take any of the foregoing actions.

     8.3 Regulatory Approvals and Other Consents.

          (a) Each Party shall cooperate and use commercially reasonable efforts to promptly prepare
and file all necessary documentation, to effect all necessary applications, notices, petitions,
filings and other documents, and to use all commercially reasonable efforts to obtain all necessary
permits, consents, approvals and authorizations of all Governmental Entities (including FERC)
necessary or advisable to obtain the Required Statutory Approvals as soon as practicable; provided,
however, that the Parties shall make all required initial filings necessary to obtain the Required
Statutory Approvals within five Business Days after the date hereof. Each Party shall have the
right to review a reasonable time in advance and to provide comments on any filing made after the
date hereof and until the Closing by the other Party with any Governmental Entity (including FERC)
with respect to the transactions contemplated hereby, and the Party making such filing shall give
reasonable consideration to any comments so provided. Each Party

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shall be responsible for its own cost of preparing and filing such applications, as well as all
petitions for rehearing and all reapplications.

          (b) Without limiting the generality of Section 8.3(a) hereof, but only to the extent required
by Applicable Law, Seller and Purchaser shall as promptly as practicable, but in no event later
than five Business Days following the execution and delivery of this Agreement, each file with the
United States Federal Trade Commission (the “FTC”) and the United States Department of Justice (the
“DOJ”) the Notification and Report Form under the HSR Act required in connection with the
transactions contemplated hereby and as promptly as practicable supply any additional information,
if any, requested in connection herewith pursuant to the HSR Act. Any such Notification and Report
Form and additional information, if any, submitted to the FTC or the DOJ shall be in substantial
compliance with the requirements of the HSR Act, each of Seller and Purchaser shall furnish to the
other such information and assistance as the other may reasonably request in connection with its
preparation of any filing or submission which is necessary under the HSR Act. Each of Seller and
Purchaser shall keep the other apprised in a prompt manner of the status and substance of any
communications with, and inquiries or requests for additional information from, the FTC and the DOJ
and shall comply promptly with any such inquiry or request. To the extent a filing is required
under the HSR Act, each of Seller and Purchaser shall use commercially reasonable efforts to obtain
the early termination or expiration of any applicable waiting period required under the HSR Act for
the consummation of the transactions contemplated hereby. The costs of all filing fees under the
HSR Act (if any) shall be borne 50% by Purchaser and 50% by Seller.

          (c) Seller shall submit, not later than five days after the Closing Date, a completed
General Information Notice to the New Jersey Department of Environmental Protection, as and to the
extent required by the New Jersey Industrial Site Recovery Act,
N.J.A.C. 7:26B (“ISRA”). Each Party
shall cooperate and use commercially reasonable efforts to promptly prepare and provide such
agreements and other information, approvals or authorizations as may be required, including without
limitation the General Information Notice, in order to obtain, as soon as possible after the
Closing, a no further action letter from the New Jersey Department of Environmental Protection with
respect to such property or facilities as may be subject to ISRA.

          (d) Seller shall, as promptly as practicable, use commercially reasonable efforts (which
shall not include the payment of any consideration or the extinguishment of any of its or the
Companies’ rights) to obtain the Seller Required Consents.

          (e) Seller shall, as promptly as practicable, use commercially reasonable efforts (which
shall not include the payment of any consideration or the extinguishment of any of its or the
Companies’ rights) to obtain the consents of Apollo Energy III, LLC, Prometheus Energy Corporation,
Magellan-Montauk LFG, LLC and Magellan LFG Holdings, LLC in connection with the contemplated pledge
by Purchaser to its lender on the Closing Date of membership interests in the Partially Owned
Subsidiaries.

          (f) Purchaser shall, as promptly as practicable and at its sole cost and expense, use
commercially reasonable efforts (i) to obtain the approval by the South African Reserve

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Board of the transactions contemplated hereby and (ii) to enter into definitive agreements with its
lender for financing the transactions contemplated hereby and to close such financing at or prior
to the Closing.

     8.4 Compliance with Law. Each Party shall comply with all applicable laws and
regulations required for the valid and effective consummation of the transactions contemplated
hereby.

     8.5 Notice. Each Party shall promptly notify the other Party in writing upon the
occurrence or the nonoccurrence of any event which does then, or which upon the passing of time or
the giving of notice would, constitute a material breach of or default under, or render misleading
or untrue in any material respect, any agreement, covenant, representation or warranty made by such
Party in this Agreement.

     8.6 Public Announcements. The Parties will consult with each other before issuing,
and provide each other the opportunity to review, comment upon and concur with, any press release
or other public statements with respect to the transactions contemplated by this Agreement, and
shall not issue any such press release or make any such public statement prior to such
consultation, except as may be required by applicable law or court process.

     8.7 No Inconsistent Action. No Party shall take any action (a) inconsistent with its
obligations under this Agreement or (b) that would hinder or delay the consummation of the
transactions contemplated by this Agreement. Seller and Purchaser shall use commercially reasonable
efforts to cause to be satisfied prior to the Closing Date the conditions set forth in Section 7.1
and Section 7.2 hereof, respectively.

     8.8 Cash and Intercompany Receivables and Payables. Notwithstanding anything to the
contrary herein, prior to the close of business on the day immediately prior to the Closing Date,
Seller shall (i) cause all of the Companies’ receivables from, and payables to, Seller or other
Affiliates of Seller (other than the Companies) to be collected and paid, respectively, so that no
such items are on the books of the Companies as of the Closing Date; and (ii) be permitted, in its
sole discretion, to cause some or all of the Cash Equivalents to be distributed to Seller.

     8.9 Employees.

          (a) Purchaser agrees to cause the Companies to continue the employment of those individuals
who are employees of the Companies on the Closing Date for a period of at least 12 months
thereafter on terms and conditions no less favorable to such employees as their current terms and
conditions; provided, however, that such employment may be terminated during such 12-month period
for cause or non-performance, as customarily defined and determined and in accordance with the
Companies’ existing practices and procedures. Individuals who are otherwise employees of the
Companies, but who on the Closing Date are not actively at work due to a leave of absence covered
by the Family and Medical Leave Act, due to any other authorized leave of absence, or due to short
or long-term disability, shall nevertheless be treated as employees of the Companies for the
purposes of this Section 8.9. In addition,

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Purchaser shall cause the Companies to make offers of employment to the Additional Employees, for
terms of not less than 12 months and on terms and conditions no less favorable to the Additional
Employees as their current terms and conditions; provided, however, that such employment may be
terminated during such 12-month period for cause or non-performance, as customarily defined and
determined and in accordance with the Companies’ existing practices and procedures. Employees of
the Companies on the Closing Date, together with the Additional Employees, are referred to
collectively as the “Company Employees.”

          (b) Effective as of the Closing Date, all Company Employees shall cease to participate in the
Benefit Plans sponsored by Seller or any of its ERISA Affiliates.

          (c) As of the Closing Date, all Company Employees shall be eligible to participate in and, if
elected, shall commence participation in the employee benefit plans (within the meaning of Section
3(3) of ERISA), programs, policies, contracts, fringe benefits, or arrangements of Purchaser or its
Affiliates (collectively, “Purchaser Employee Plans”) in accordance with the terms of such
plans in the same manner as similarly situated employees of Purchaser. Purchaser shall, to the
extent permissible under any Purchaser Employee Plan, waive all limitations as to pre-existing
condition exclusions and waiting periods with respect to the Company Employees and their spouses
and dependents, if applicable, under the Purchaser Employee Plans, other than, but only to the
extent of, limitations or waiting periods that were in effect with respect to such employees under
the employee benefit plans (within the meaning of Section 3(3) of ERISA), programs, policies,
contracts, fringe benefits, or arrangements of Seller or its
Affiliates (collectively, “Seller
Employee Plans”) that have not been satisfied as of the Closing Date. Purchaser shall, to the
extent permissible under any Purchaser Employee Plan, provide each Company Employee with credit for
any co-payments and deductibles paid prior to the Closing Date in satisfying any deductible or
out-of-pocket requirements under Purchaser’s Employee Plans. Purchaser shall use commercially
reasonable efforts to accept or cause to be accepted transfers from Seller’s health care flexible
spending account plan, transportation flexible spending account plan and dependent care flexible
spending account plan of each Company Employee’s unused account balance as of the Closing Date and
credit such employee with such amounts under the applicable Purchaser Employee Plans.

          (d) Purchaser shall cause to be provided to each Company Employee credit for prior service
with Seller, the Companies or their Affiliates, for all purposes (including vesting, eligibility,
employer contributions, benefit accrual and/or level of benefits) in all Purchaser Employee Plans,
including fringe benefit plans, vacation and sick leave policies, severance plans or policies,
matching and profit sharing contributions under defined contribution plans and retiree medical
plans maintained or provided by Purchaser or its Affiliates in which such Company Employees are
eligible to participate after the Closing Date, other than for purposes of benefit accruals under
Purchaser’s defined benefit pension plans subject to Title IV of ERISA or Section 412 of the Code.

          (e) Purchaser shall provide each Company Employee credit for all of the Company Employee’s
earned but unused vacation and sick leave and other time-off as of the Closing Date as determined
under the current time-off policies applicable to such employee.

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          (f) Purchaser shall take any and all necessary action to cause the trustee of a defined
contribution plan of Purchaser or one of its Affiliates, if requested to do so by a Company
Employee, to accept a direct “rollover” of all or a portion of such employee’s distribution from
DLH’s defined contribution plan (excluding securities, but including plan loans).

          (g) As of the Closing, DLH and Duquesne Light Company shall, to the extent it does not
violate the Code’s non-discrimination rules, take all necessary action to cause the defined
contribution and defined benefit pension plans maintained by DLH and Duquesne Light Company to
fully vest the Company Employees in their account balances and/or accrued benefits under such plans
as of the Closing Date.

          (h) With respect to each Company Employee (including any beneficiary or the dependent
thereof), Seller shall retain all liabilities and obligations arising under any applicable welfare
benefit plans of Seller or its Affiliates (other than the Companies) to the extent that such
liability or obligation relates to claims incurred (whether or not reported or paid) prior to the
Closing Date. For purposes of this Section 8.9(h), a claim shall be deemed to be incurred when (i)
with respect to medical, dental, health related benefits, accident and disability (including
workmen’s compensation benefits), the medical, dental, health related, accident or disability
services giving rise to such claim are performed and (ii) with respect to life insurance, when the
death occurs. Effective as of the Closing Date, Seller shall be responsible for providing coverage
under COBRA to any Company Employee, his or her spouse or dependent person as to whom a “qualifying
event” as defined in Section 4890B of the Code has occurred prior to the Closing Date.

          (i) If a plant closing or a mass layoff occurs or is deemed to occur with respect to any
Company at any time on or after the Closing, Purchaser shall be solely responsible for providing
all notices required under the Worker Adjustment and Retraining Notification Act, 29 U.S.C. § 2109
et seq. or the regulations promulgated thereunder (the “WARN Act”) and for taking all
remedial measures, including, without limitation, the payment of all amounts, penalties,
liabilities, costs and expenses if such notices are not provided.

          (j) Seller shall retain any and all liabilities and obligations which relate to service of
any Company Employee prior to the Closing Date and arise under any Seller Employee Plans that
provide for postretirement benefits for periods of service prior to the Closing Date with respect
to any Company Employee employed by Seller or its Affiliates (other than the Companies) that are
(A) defined benefit pension plans subject to Title IV of ERISA or Section 412 of the Code, (B)
defined contribution plans as defined in Section 3(34) of ERISA, (C) voluntary employees’
beneficiary associations under Section 501(c)(9) of the Code, or (D) related to other
post-employment benefits for all current retirees of the Companies as of the Closing.

          (k) Approximately two weeks prior to the Closing Date, Seller shall provide to Purchaser a
list of the Annual Incentive Plan prorated payments, if any, for each proposed Company Employee as
of the Closing Date, calculated on the basis of a full payout for any applicable open Annual
Incentive Plan year (the “Prorated Payment”). Purchaser shall (i) on the

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Closing Date, cause the applicable Company to pay to each Company Employee the respective Prorated
Payment, if any, and (ii) cause the applicable Company to pay to each Company Employee a prorated
amount under Purchaser’s corresponding incentive plan, if any, for the period from the Closing Date
until December 31 of the year in which Closing occurs.

     8.10 Further Assurances. After the Closing, each Party shall cooperate with the other,
and execute and deliver, or cause to be executed and delivered, all such other instruments,
including instruments of conveyance, assignment and transfer, and use commercially reasonable
efforts to take all such other actions as may be reasonably requested by the other Party from time
to time, consistent with the terms of this Agreement, to effectuate the purposes and provisions of
this Agreement.

     8.11 Tax Matters.

          (a) Seller shall be responsible for the preparation and filing of the Companies’ federal (if
applicable), state and local income and, if appropriate, other Tax Returns with respect to all
periods ending on or before the Closing Date and the portion, ending on or before the Closing Date,
of any Straddle Period (“Pre-Closing Tax Periods”), and for the payment of all federal, state and
local income and, if appropriate, other Taxes with respect to all such Pre-Closing Tax Periods.
Except as provided below, such Tax Returns shall be prepared in a manner consistent with prior
practice, and shall utilize accounting methods, elections and conventions that do not have the
effect of distorting the allocation of income or expense between Pre-Closing Tax Periods and
periods ending after the Closing Date or the portion, beginning after the Closing Date, of any
Straddle Period (“Post-Closing Tax Periods”). Seller shall include the income of each Company
(including any deferred item triggered into income by Treasury Regulation Section 1.1502-13 and any
excess loss account taken into income under Treasury Regulation
Section 1.1502-19) on DLH’s
consolidated federal Tax Returns for all Pre-Closing Tax Periods, and pay any and all Taxes
attributable to all Pre-Closing Tax Periods. For all Pre-Closing Tax Periods, Seller shall cause
each Company to join in DLH’s consolidated federal Tax Return and, in jurisdictions requiring
separate reporting from DLH, to file separate Company state, local and foreign Tax Returns, and to
pay any and all Tax attributable to all Pre-Closing Tax Periods. Purchaser shall cause each Company
to file income Tax Returns (or shall include the Companies in its combined or consolidated income
Tax Return) for all Post-Closing Tax Periods, and shall pay any and all Taxes attributable to all
Post-Closing Tax Periods. Seller agrees not take any position in any Tax Return for a Pre-Closing
Tax Period that could reasonably be expected to result in any Tax liability for any Company or
Purchaser or require any of the foregoing to take any adverse Tax position without the prior
written consent of Purchaser. For purposes of this Agreement, the amount of taxable income of the
Companies attributable to the Straddle Period shall be determined based upon a hypothetical closing
of the taxable year on the Closing Date with the Closing Date being included in the pre-Closing
portion of such Straddle Period; provided, however, real and personal property Taxes (which are not
based on income) shall be determined by reference to the relative number of days in the pre-Closing
and post-Closing portions of such Straddle Period.

          (b) Purchaser and Seller recognize that each of them will need access, from time to time,
after the Closing Date, to certain accounting and Tax records and information held

37

 

by Purchaser and/or the Companies to the extent such records and information pertain to events
occurring prior to the Closing Date; therefore, Purchaser agrees to cause the Companies to (i)
properly retain and maintain such records for a period of seven years from the date the Tax Returns
for the year in which the Closing occurs are filed or until the expiration of the statute of
limitations with respect to such year, whichever is later, and (ii) allow Seller and its agents and
representatives at times and dates mutually acceptable to the Parties, to reasonably inspect,
review and make copies of such records from time to time, such activities to be conducted during
normal business hours and at Seller’s expense.

     8.12 Fresh Kills Project. After the Closing and until July 1, 2007, (a) Purchaser shall
cause GSF Energy, LLC to maintain in full force and effect that certain $1,000,000 Payment Bond
dated December 29, 2003 made by GSF Energy, LLC and Fidelity and Deposit Company of Maryland in
favor of The City of New York (the “GSF Payment Bond”): and (b) Seller shall cause to be maintained
in full force and effect that certain $3,500,000 Letter of Credit issued by Citibank, N.A. in favor
of The City of New York, as amended (the “GSF Letter of
Credit”).

     8.13 Transition Services. Seller shall provide, or shall cause one or more of its
Affiliates to provide, to Purchaser and the Companies, for a period of up to six months after the
Closing Date, certain corporate support and administrative services with respect to the Business
and the Companies, pursuant to a Transition Services Agreement to be entered into at the Closing,
substantially in the form of Exhibit B hereto, which agreement shall set forth the fees payable by
Purchaser in connection therewith.

     8.14
Divestiture of Montauk Svnfuels, LLC. Prior to the Closing, Seller, at its sole
cost and expense, shall cause Montauk to transfer all of Montauk’s ownership interests in Montauk
Synfuels, LLC to Seller, and shall take such other actions, all in form and substance reasonably
satisfactory to Purchaser, such that on the Closing Date, neither Montauk nor any other Company
shall have (i) any direct or indirect ownership interest in any of the Synfuels Entities or (ii)
any Liability or other future obligation of any nature whatsoever to, or in any way related to, the
Synfuels Entities or their Affiliates (collectively, the
“Synfuels Divestiture”). Seller shall
provide to Purchaser copies of all documents, agreements and other instruments executed by any of
the Companies in connection with the Synfuels Divestiture.

     8.15
Surety Bonds. Seller represents and warrants that attached as Schedule 8.15 hereto is a correct and complete list of surety and other bonds currently in place for the
benefit of the Companies (collectively, the “Bonds”). The Bonds have been obtained by or through
Seller and/or DLH, and, as a result, Seller and/or DLH have reimbursement obligations if payments
are made or expenses are incurred under the Bonds. Schedule 8.15 hereto identifies those
Bonds which Purchaser has agreed to replace after the Closing (collectively, the “Purchaser
Replaced Bonds”) and those Bonds which Seller has agreed to cause to remain in place after the
Closing (collectively, the “Seller Retained Bonds”). Purchaser shall, at its expense, use
commercially reasonable efforts to replace the Purchaser Replaced Bonds at the Closing or as soon
thereafter as possible, including obtaining any third party consents required in connection with
such replacements. Seller shall, at its expense, (i) cause the Purchaser Replaced Bonds to remain
in place after the Closing until such time as Purchaser replaces such Bonds (but in no event later
than 90 days after the Closing Date) and (ii) cause the Seller Retained Bonds to remain in place

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after the Closing for the period set forth for each such Bond on Schedule 8.15 hereto.
Notwithstanding which Party is obligated to replace, retain or maintain the Bonds as provided in
this Section, (a) Seller shall be responsible for, and shall reimburse Purchaser for, all Losses
incurred in connection with the Bonds with respect to any action, inaction or event which occurs
prior to the Closing and (b) Purchaser shall be responsible for, and shall reimburse Seller for,
all Losses incurred in connection with the Purchaser Replaced Bonds with respect to any action,
inaction or event which occurs after the Closing.

     8.16 Restrictive Covenants. To assure that Purchaser will realize the value and
goodwill inherent in the Companies, Seller hereby agrees that, for a period of two years after the
Closing Date:

          (a) Seller shall not, directly or indirectly, as a stockholder (except as a stockholder
owning beneficially or of record less than 5% of the outstanding shares of any class of publicly
traded stock of any issuer), or as a member, partner, joint venturer, proprietor or otherwise, own
or operate a landfill gas-to-energy business; and

          (b) Seller shall not, directly or indirectly, solicit for employment, employ or cause to be
employed any Company Employee, unless such Company Employee is no longer employed by Purchaser or
the Companies through no fault of Seller or its Affiliates.

Seller agrees and acknowledges that the restrictions contained in this Section are reasonable in
scope and duration and are necessary to protect Purchaser after the Closing. If, however, any
provision of this Section, as applied to any Party or to any circumstances, is adjudged by a court
to be invalid or unenforceable, the same will in no way affect any other provision of this Section
or any other part of this Agreement, the application of such provision in any other circumstances
or the validity or enforceability of this Agreement. If any such provision, or any part thereof, is
held to be unenforceable because of the duration of such provision or the area covered thereby, the
Parties agree that the court making such determination will have the power to reduce the duration
and/or area of such provision, and/or to delete specific words or phrases, and in its reduced form
such provision will then be enforceable and will be enforced. Upon breach of any provisions of this
Section, Purchaser will be entitled to injunctive relief, since the remedy at law would be
inadequate and insufficient.

     8.17 Bifurcation of Transaction. The Parties acknowledge that they desire to consummate
the transactions contemplated hereby on or prior to December 31, 2006. In the event that as of
December 28, 2006, the Required Statutory Approval of FERC has not been obtained and become a Final
Order, then the Parties shall cooperate in good faith to bifurcate the transactions contemplated
hereby such that (i) all of the shares of stock of Monmouth Energy, Inc. are transferred from
Montauk to Seller prior to the Closing; (ii) the sale of Montauk to Purchaser is consummated on or
prior to December 31, 2006; and (iii) the sale of Monmouth Energy, Inc. to Purchaser is consummated
within five Business Days after the Required Statutory Approval of FERC has been obtained and
become a Final Order. In connection with such bifurcation, if any, the Parties shall enter into an
amendment to this Agreement and/or a new agreement relating thereto, each in form and substance
reasonably satisfactory to each Party.

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     8.18 Release. Purchaser shall deliver to Seller prior to the Closing the release of
John Schmitt as required under Section 7.2(g) hereof.

ARTICLE IX

Indemnification

     9.1 Indemnification by Seller. Subject to the remainder of this Article IX, Seller
shall and hereby does indemnify Purchaser, the Companies (after the Closing), and their
Representatives (collectively, the “Purchaser Indemnified Parties”), against, and hold them
harmless from, any and all Losses suffered or sustained by any Purchaser Indemnified Party and
arising from, in connection with or otherwise with respect to:

          (a) any breach of any representation or warranty of Seller contained in this Agreement or in
any Seller Agreement;

          (b) any breach of any covenant of Seller contained in this Agreement or in any Seller
Agreement;

          (c) the ownership and/or operation, by any of the Companies’ prior to the Closing Date of a
gas processing facility at the Fresh Kills landfill located on Staten Island, New York, including
without limitation resulting from any payment made after the Closing under the GSF Payment Bond
and/or the GSF Letter of Credit;

          (d) the matters described on Schedule 4.14 hereto (collectively, the “Existing
Litigation”);

          (e) any intercompany gain or other adverse Tax impact caused by the transactions contemplated
hereby due to the tax status as a “C corporation” of any of the Companies;

          (f) any Liabilities of the Companies in connection with any failure to pay, or failure to
file Tax Returns with respect to, all state and local Taxes of any nature whatsoever which relate
to any period of time ending prior to the Closing Date, including without limitation any state or
local income, sales, use, ad valorem, franchise and/or property Taxes;

          (g) any Liabilities or payments required under any self-insurance arrangement of any of the
Companies for Liabilities arising prior to the Closing Date, including without limitation all
self-insurance obligations which have not been specifically accrued or reserved for as reflected in
the Financial Statements;

          (h) any Liabilities arising out of or relating to (i) the matters described on Schedule
4.20 hereto or (ii) “superfund” obligations existing as of the Closing of GSF Energy, LLC for
the Omega Chemical Superfund site; or

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          (i) any Liabilities arising out of or related to (i) violations of Environmental Laws and/or
related Permits prior to the Closing, (ii) “superfund” obligations of the Companies that result
from the disposal of Hazardous Wastes prior to the Closing or (iii) any failure prior to the
Closing on the part of Seller or the Companies to comply with all applicable Environmental Laws
and/or related Permits in connection with the Monmouth facility in New Jersey, including without
limitation all outstanding enforcement actions pending before the New Jersey Department of
Environmental Protection.

     9.2 Indemnification by Purchaser. Subject to the remainder of this Article IX,
Purchaser shall indemnify Seller and its Representatives (collectively, the “Seller Indemnified
Parties”) against, and hold them harmless from, any and all Losses suffered or sustained by any
Seller Indemnified Party and arising from, in connection with or otherwise with respect to:

          (a) any breach of any representation or warranty of Purchaser contained in this Agreement or
in any Purchaser Agreement;

          (b) any breach of any covenant of Purchaser contained in this Agreement or in any Purchaser
Agreement;

          (c) any Liabilities of the Companies in connection with any failure to pay, or failure to
file Tax Returns with respect to, all state and local Taxes of any nature whatsoever which relate
to any period of time ending on or after the Closing Date, including without limitation any state
or local income, sales, use, ad valorem, franchise and/or property Taxes; or

          (d) any Liabilities arising out of or related to (i) violations of Environmental Laws and/or
related Permits after the Closing, (ii) “superfund” obligations of the Companies that result from
the disposal of Hazardous Wastes after the Closing or (iii) any failure after the Closing on the
part of Purchaser or the Companies to comply with all applicable Environmental Laws and/or related
Permits in connection with the Monmouth facility in New Jersey.

     9.3 Calculation of Losses: Limitations.

          (a) The
amount of any Loss for which indemnification is provided under this
Article IX shall
be net of any amounts actually recovered by the Indemnified Party under insurance policies with
respect to such Loss and net of amounts accrued on the Companies’ balance sheet as of the Closing
Date and included in Closing Working Capital with respect to such Loss, and shall be (i) increased
to take account of any net Tax cost incurred by the Indemnified Party arising from the receipt of
indemnity payments hereunder (grossed up for such increase) and (ii) reduced to take account of any
net Tax benefit realized by the Indemnified Party arising from the incurrence or payment of any
such Loss. In computing the amount of any such Tax cost or Tax benefit, the Indemnified Party shall
be deemed to recognize all other items of income, gain, loss deduction or credit before recognizing
any item arising from the receipt of any indemnity payment hereunder or the incurrence or payment
of any indemnified Loss.

          (b) Notwithstanding any other provisions of this Article IX, but subject to Section 9.3(d)
hereof, neither Party shall have any obligation to indemnify the other Party for

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Losses described under Section 9.1 (a) or Section 9.2(a) hereof until such other Party shall incur,
in the aggregate, Losses described under Section 9.1 (a) or Section 9.2(a) hereof, as applicable,
in excess of $250,000, and then only for Losses in excess of such amount.

          (c) Notwithstanding any other provisions of this Article IX, but subject to Section 9.3(d)
hereof, neither Party shall have any obligation to indemnify the other Party for Losses described
under Section 9.1 or Section 9.2 hereof in excess of $11,700,000.

          (d) Notwithstanding the foregoing, the limitations set forth in Sections 9.3(b) and 9.3(c)
hereof shall not limit any recovery for Losses suffered or sustained (i) by the Purchaser
Indemnified Parties pursuant to Section 9.1(c), 9.1 (d), 9.1(f) or 9.1(h) hereof or as a result of
a breach of Section 3.2, 4.2 or 4.3 hereof; (ii) by the Purchaser Indemnified Parties in any case
based on fraud or intentional or willful misconduct by Seller, DLH or the Companies (prior to the
Closing); (iii) by the Purchaser Indemnified Parties pursuant to Section 9.1(e), 9.1(g) or 9.1(i)
hereof or as a result of a breach of Section 4.13, 4.15 or 4.20 hereof (provided, however, that
Seller shall not be obligated to indemnify the Purchaser Indemnified Parties for any Losses
suffered or sustained as described in this clause (iii), together with all other Losses suffered or
sustained by them, in excess of $20,000,000); (iv) by the Seller Indemnified Parties in any case
based on fraud or intentional or willful misconduct by Purchaser; (v) by the Seller Indemnified
Parties pursuant to Section 9.2(c) or 9.2(d) hereof (provided, however, that Purchaser shall not be
obligated to indemnify the Seller Indemnified Parties for any Losses suffered or sustained as
described in this clause (v), together with all other Losses suffered or sustained by them, in
excess of $20,000,000); or (vi) by the Seller Indemnified Parties as a result of a breach of
Section 5.2.

     9.4 Indemnification Procedures.

          (a) In order for a Purchaser Indemnified Party or a Seller Indemnified Party (in such
capacity, the “Indemnified Party”) to be entitled to any indemnification provided for under this
Agreement in respect of, arising out of or involving a claim made by any Person against the
Indemnified Party (a “Third Party Claim”), such Indemnified Party must notify the Party from which
indemnification is sought (in such capacity, the
“Indemnifying Party”) in writing of the Third
Party Claim promptly following receipt by such Indemnified Party of written notice of the Third
Party Claim; provided, however, that failure to give such notification shall not affect the
indemnification provided hereunder except to the extent the Indemnifying Party shall have been
actually and materially prejudiced as a result of such failure. Thereafter, the Indemnified Party
shall deliver to the Indemnifying Party, promptly following the Indemnified Party’s receipt
thereof, copies of all notices and documents (including court papers) received by the Indemnified
Party relating to the Third Party Claim and not also addressed to the Indemnifying Party.

          (b) If a Third Party Claim is made against an Indemnified Party, the Indemnifying Party shall
be entitled to participate in the defense thereof and, if it so chooses, to assume the defense
thereof with counsel selected by the Indemnifying Party; provided that such counsel is not
reasonably objected to by the Indemnified Party. In the event the Indemnifying Party duly elects to
assume the defense of a Third Party Claim, the Indemnifying Party shall not

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be liable to the Indemnified Party for any legal expenses subsequently incurred by the Indemnified
Party in connection with the defense thereof unless (i) the Indemnifying Party has failed to
promptly assume the defense of a Third Party Claim after receipt of notice of the commencement
thereof or (ii) there are defenses available to the Indemnifying Party and the Indemnified Party
which are sufficiently disparate and several such that continued representation by one counsel (or
legal firm) of both the Indemnifying Party and the Indemnified Party would materially prejudice the
assertion or prosecution of such defenses or otherwise result in a conflict of interest for such
counsel. If the Indemnifying Party assumes such defense, the Indemnified Party shall have the right
to participate in the defense thereof and to employ counsel, at its own expense, separate from the
counsel employed by the Indemnifying Party, it being understood that the Indemnifying Party shall
control such defense. If the Indemnifying Party chooses to defend or prosecute a Third Party Claim,
the Indemnified Party shall cooperate in the defense or prosecution thereof. Such cooperation shall
include the retention and (upon the Indemnifying Party’s request) the provision to the Indemnifying
Party of records and information that are reasonably relevant to such Third Party Claim and making
employees available on a mutually convenient basis to provide additional information and
explanation of any material provided hereunder. Whether or not the Indemnifying Party assumes the
defense of a Third Party Claim, the Indemnified Party shall not admit any liability with respect
to, or settle, compromise or discharge, such Third Party Claim without the Indemnifying Party’s
prior written consent (which consent shall not be unreasonably withheld or delayed). If the
Indemnifying Party assumes the defense of a Third Party Claim, the Indemnified Party shall agree to
any settlement, compromise or discharge of a Third Party Claim that the Indemnifying Party may
recommend and that by its terms obligates the Indemnifying Party to pay the full amount of the
liability in connection with such Third Party Claim, which releases the Indemnified Party
completely in connection with such Third Party Claim and that would not otherwise adversely affect
the Indemnified Party. Notwithstanding the foregoing, the Indemnifying Party shall not be entitled
to assume the defense of any Third Party Claim (and shall be liable for the fees and expenses of
counsel incurred by the Indemnified Party in defending such Third Party Claim) if the Third Party
Claim seeks an order, injunction or other equitable relief or relief for other than money damages
against the Indemnified Party that the Indemnified Party reasonably determines, after conferring
with its outside counsel, cannot be separated from any related claim for money damages. If such
equitable relief or other relief portion of the Third Party Claim can be so separated from that for
money damages, the Indemnifying Party shall be entitled to assume the defense of the portion
relating to money damages.

          (c) In the event any Indemnified Party has a claim against an Indemnifying Party under
Section 9.1 or 9.2 hereof that does not involve a Third Party Claim being asserted against or
sought to be collected from such Indemnified Party, the Indemnified Party shall deliver notice of
such claim with reasonable promptness to the Indemnifying Party. The failure by any Indemnified
Party so to notify the Indemnifying Party shall not relieve the Indemnifying Party from any
liability that it may have to such Indemnified Party under Section 9.1 or 9.2 hereof, except to the
extent that the Indemnifying Party demonstrates that it has been materially prejudiced by such
failure. The Indemnifying Party and the Indemnified Party shall proceed in good faith to negotiate
a resolution of such dispute and, if not resolved through negotiations, such dispute shall be
resolved by litigation in an appropriate court of competent jurisdiction.

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          (d) Notwithstanding anything to the contrary herein, Seller shall assume and control the
defense of the Existing Litigation.

     9.5 Exclusive Post-Closing Remedy. The remedies set forth in this Article IX shall be
the sole and exclusive remedies of the Parties after the Closing for any and all Losses sustained
or incurred by the Parties or their respective successors or assigns in connection with this
Agreement or the transactions contemplated hereby.

     9.6 Termination of Indemnification Obligations. The indemnification obligations
pursuant to Section 9.1 and Section 9.2 hereof with respect to (i) representations and warranties
set forth herein shall terminate at the end of the applicable survival period set forth in Section
11.3 hereof, (ii) covenants set forth herein shall terminate on the date which is 18 months after
the Closing Date (or such later time as may be expressly set forth in such covenant), (iii) the
items described in Sections 9.1(e), 9.1(f) and 9.2(c) hereof shall terminate upon the expiration of
the applicable statute of limitations and (iv) the items described in Sections 9.1(i) and 9.2(d)
hereof shall terminate on the third anniversary of the Closing Date; provided, however, that such
indemnification obligations shall not terminate with respect to (a) any item as to which the
Indemnified Party shall have, before the expiration of such period, previously made a claim by
delivering a notice of such claim (stating in reasonable detail the basis of such claim) to the
Indemnifying Party in accordance with Section 9.4 hereof; and (b) the items described in Section
9.1(c), 9.1 (d), 9.1(g) or 9.1(h) hereof.

ARTICLE X

Termination

     10.1 Termination. This Agreement may be terminated:

          (a) By Seller upon written notice to Purchaser if Seller is not in material breach of its
obligations under this Agreement and (i) there has been a breach of any representation, warranty,
covenant or agreement contained in this Agreement on the part of Purchaser in a manner causing the
conditions set forth in Section 7.2 hereof not to be satisfied and such breach shall not have been
cured in all material respects within 30 days of receipt by Purchaser of written notice of such
breach or (ii) Purchaser fails to consummate the transactions contemplated hereby on the Closing
Date if all conditions set forth in Section 7.1 hereof have been satisfied or waived as of such
date;

          (b) By Purchaser upon written notice to Seller if Purchaser is not in material breach of its
obligations under this Agreement and (i) there has been a breach of any representation, warranty,
covenant or agreement contained in this Agreement on the part of Seller in a manner causing the
conditions, set forth in Section 7.1 hereof not to be satisfied and such breach shall not have been
cured in all material respects within 30 days of receipt by Seller of written notice of such breach
or (ii) Seller fails to consummate the transactions contemplated hereby on the Closing Date if all
conditions set forth in Section 7.2 hereof have been satisfied or waived as of such date;

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          (c) By either Party if the Closing Date has not occurred on or before February 28, 2007, for
reasons other than the failure of the Party seeking termination to comply in full with its
obligations under this Agreement; or

          (d) By mutual consent of the Parties.

     10.2 Effect of Termination. In the event of the termination of this Agreement by Seller
pursuant to Section 10.1 (a) hereof or by Purchaser pursuant to Section 10.1 (b) hereof, the
Parties shall be entitled to pursue all remedies as may be available to them at law or in equity.
Notwithstanding the foregoing, in the event of the termination of this Agreement by Seller pursuant
to Section 10.1 (a) hereof, Seller shall be entitled to pursue any and all Losses suffered by it in
connection with such termination. In the event of the termination of this Agreement pursuant to
Section 10.1 (c) or Section 10.1 (d) hereof, neither Party shall have any liability to the other
Party as a result of such termination.

     10.3 Pre-Closing Remedies. In addition to the remedies available at law, each of the
Parties acknowledges and agrees that the other Party would be irreparably harmed in the event any
of the provisions of this Agreement were not performed in accordance with their specific terms or
were otherwise breached prior to the Closing. Accordingly, each of the Parties agrees that, in
addition to any other remedy to which such Party may be entitled at law or in equity, they each
shall be entitled to equitable remedies, including injunctive relief and/or specific performance,
to prevent breaches of the provisions of this Agreement and to enforce specifically this Agreement
and the terms and provisions hereof.

ARTICLE XI

Miscellaneous

     11.1 Waivers and Amendments. Any amendment or modification to this Agreement or the
rights of either Party shall be made only by a written agreement signed by both Parties.

     11.2 Governing Law. This Agreement shall be governed in all respects by the laws of the
Commonwealth of Pennsylvania, without regard to principles of choice of law.

     11.3 Survival. The representations and warranties made herein shall survive the Closing
of the transactions contemplated hereby until the date which is 18 months after the Closing Date;
provided, however, (x) the representations and warranties set forth in Section 4.20 hereof shall
survive until the third anniversary of the Closing Date; and (y) the representations and warranties
set forth in Sections 3.2, 4.2, 4.3, 4.13, 4.15 and 5.2 hereof shall survive until the expiration
of any applicable statute of limitations.

     11.4 Assignment. Neither Party shall assign, transfer or convey this Agreement or any
of its rights or obligations hereunder without the prior written consent of the other Party hereto,
which consent may not be unreasonably withheld or delayed.

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     11.5 No Third Party Beneficiaries. This Agreement is for the sole benefit of the
Parties and their permitted assigns, and nothing herein expressed or implied shall give or be
construed to give to any other Person any legal or equitable rights hereunder, except that the
employees of the Companies on the Closing Date and the Additional Employees are intended third
party beneficiaries, and shall have third party beneficiary rights, under Section 8.9 hereof.

     11.6 Successors and Assigns. Except as otherwise expressly provided herein, the
provisions of this Agreement shall inure to the benefit of, and be binding upon, the successors and
permitted assigns of the Parties.

     11.7 Entire Agreement. Other than the Confidentiality Agreement (which shall remain in
full force and effect in accordance with its terms), this Agreement (including the schedules and
exhibits hereto which are an integral part hereof) and the other agreements to be delivered
pursuant hereto constitute the entire understanding and agreement between the Parties with regard
to the subject matter hereof and thereof and supersede all prior or contemporaneous understandings
or agreements between the Parties, whether written or oral, with respect to such subject matter.

     11.8 Notices. All notices or other communications required or permitted to be given
under this Agreement shall be in writing and shall be hand-delivered, sent via United States
registered or certified mail, postage prepaid, sent by facsimile (with a copy sent by U.S. mail),
or sent via a reputable overnight courier service to a Party at the address for such Party set
forth below (or at such other address as such Party shall specify by notice given in accordance
with the requirements of this Section 11.8):

If to Seller, to:

DQE Financial Corp.

411 Seventh Avenue

Pittsburgh, PA 15219

Attn: President

Fax: 412-393-1099

With a copy to:

Duquesne Light Company

411 Seventh Avenue

Pittsburgh, PA 15219

Attn: Legal

Fax: 412-393-5620

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If to Purchaser, to:

Blue Wolf Energy Holdings LLC

c/o Blue Wolf Capital Management LLC

One Liberty Plaza, 23rd Floor

New York, NY 10006

Attn: Managing Partner

Fax: 646-349-2280

With a copy to:

Patton Boggs LLP

2001 Ross Avenue, Suite 3000

Dallas, TX 75201

Attn: Charles P. Miller, Esq.

Fax: 214-758-1550

All
notices duly given in accordance with the requirements of this Section 11.8 shall be deemed
given when delivered by hand, three Business Days after deposit in the United States mail, on the
date of receipt if sent by facsimile, or one Business Day after deposit in the case of overnight
courier service.

     11.9 Severability. In the event that any provision of this Agreement shall be found by
a court of competent jurisdiction to be invalid, illegal or unenforceable, the validity, legality
and enforceability of the remaining provisions of this Agreement shall not in any way be affected
or impaired thereby.

     11.10 Transaction Expenses. Each of Seller and Purchaser shall bear its own expenses and
legal fees in connection with the consummation of the transactions contemplated by this Agreement.

     11.11 Titles. The titles of the articles and sections of this Agreement are for
convenience of reference only and are not to be considered in construing this Agreement.

     11.12 Delays or Omissions; Cumulative Nature of Remedies. No delay or omission to
exercise any right, power or remedy accruing to either Party shall impair any such right, power or
remedy of such Party, nor shall it be construed to be a waiver of, or acquiescence in, any breach
or default under this Agreement or any similar breach or default thereafter occurring. No delay or
omission to exercise any right, power or remedy or waiver of any single breach or default shall be
deemed a waiver of any other right, power or remedy or breach or default theretofore or thereafter
occurring. All remedies of Seller and Purchaser, whether under this Agreement or available at law
or in equity, shall be cumulative and not alternative.

     11.13 Counterparts. This Agreement may be executed in two or more counterparts, and by
the Parties on separate counterparts, each of which shall be an original, but all of which together
shall constitute one instrument.

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     11.14 Waiver of Trial by Jury. EACH OF THE PARTIES HEREBY KNOWINGLY, VOLUNTARILY AND
INTENTIONALLY WAIVES THE RIGHT IT MAY HAVE TO A TRIAL BY JURY IN RESPECT OF ANY LITIGATION BASED
UPON, OR ARISING OUT OF, UNDER OR IN CONNECTION WITH THIS AGREEMENT.

     11.15
Jurisdiction. Any judicial proceeding brought against any of the Parties or any
dispute arising out of this Agreement or matter related hereto shall be brought in any state or
federal court located in Allegheny County, Pennsylvania, and, by execution and delivery of this
Agreement, each of the Parties accepts the exclusive jurisdiction and venue of such courts, and
irrevocably agrees to be bound by any judgment rendered thereby in connection with this Agreement.
The foregoing consents to jurisdiction shall not constitute general consents to service of process
in the Commonwealth of Pennsylvania for any purpose except as provided above and shall not be
deemed to confer rights on any Person other than the respective parties to this Agreement. Each
Party agrees that service of any process, summons, notice or document by U.S. registered mail to
such Party’s address set forth in Section 11.8 hereof shall be effective service of process for any
action, suit or proceeding in Allegheny County, Pennsylvania with respect to any matters for which
it has submitted to jurisdiction pursuant to this Section 11.15.

     11.16 Attorneys Fees. The prevailing Party in any proceeding regarding a dispute between
the Parties shall be entitled to recover from the non-prevailing Party all costs and expenses,
including reasonable attorneys’ fees and costs of investigation, incurred in connection with such
proceeding.

[SIGNATURE PAGE FOLLOWS]

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     IN WITNESS WHEREOF, the Parties have caused this Agreement to be duly executed
and delivered by their duly authorized representatives as of the date first written above.

	 	 	 	 	 	 	 
	 	 	DQE FINANCIAL CORP.
	 
	 	 	 	 	 	 
	 

	 	By:
	 	/s/ John R. Schmitt	 	 
	 

	 	 	 	 	 	 
	 

	 	Name:
	 	John R. Schmitt	 	 
	 

	 	Title:
	 	Vice President	 	 
	 
	 	 	 	 	 	 
	 	 	BLUE WOLF ENERGY HOLDINGS LLC
	 
	 	 	 	 	 	 
	 

	 	By:
	 	/s/ Adam Blumenthal	 	 
	 

	 	 	 	 	 	 
	 

	 	Name:
	 	Adam Blumenthal	 	 
	 

	 	Title:
	 	Managing Member	 	 

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