Revolver Commitments. The Revolver Commitments shall terminate on the Maturity Date. Borrower may reduce the Revolver Commitments, without premium or penalty, to an amount (which may be zero) not less than the sum of # the Revolver Usage as of such date, plus # the principal amount of all Revolving Loans not yet made as to which a request has been given by Borrower under [Section 2.3(a)], plus # the amount of all Letters of Credit not yet issued as to which a request has been given by Borrower pursuant to [Section 2.11(a)]. Each such reduction shall be in an amount which is not less than $2,500,000 (unless the Revolver Commitments are being reduced to zero and the amount of the Revolver Commitments in effect immediately prior to such reduction are less than $2,500,000), shall be made by providing not less than 5 Business Days' prior written notice to Agent, and shall be irrevocable. Once reduced, the Revolver Commitments may not be increased. Each such reduction of the Revolver Commitments shall reduce the Revolver Commitments of each Lender proportionately in accordance with its ratable share thereof.

Increase in Revolver Commitments Borrowers, through Borrower Agent, may request an increase in Revolver Commitments from time to time upon notice to Agent, as long as # such increase is approved by Agent in its Permitted Discretion and is subject to terms and conditions mutually agreed upon by Agent and Borrower Agent, # the requested increase is in a minimum amount of $25,000,000 (or such lesser amount which would, when added to all previously authorized increases pursuant hereto, cause such increase to reach the maximum amount set forth below) and is offered on the same terms as existing Revolver Commitments, except for a closing fee specified by Borrowers, # increases under this Section do not collectively exceed $75,000,000 thereof (as determined by Agent) in the aggregate and no more than 4 increases are made, # no reduction in Commitments pursuant to [Section 2.1.4] has occurred prior to the requested increase and # the requested increase does not cause the Commitments to exceed 90% of any applicable cap under any Subordinated Debt agreement or the Indenture (the “Accordion”). Agent shall promptly notify Lenders of the requested increase and, within 10 Business Days thereafter, each Lender shall notify Agent if and to what extent such Lender commits to increase its Revolver Commitment. Agent shall promptly notify Borrower Agent of each Lender’s response. Any Lender not responding within such period shall be deemed to have declined an increase. If Lenders fail to commit to the full requested increase, Eligible Assignees may issue additional Revolver Commitments and become Lenders hereunder so as to bring the Revolver Commitment up to the amount requested by Borrower Agent. Agent may allocate, in its discretion, the increased Revolver Commitments among committing Lenders and, if necessary, Eligible Assignees. If the full increase requested by Borrower’s Agent is not committed to by the Lenders after taking into account the participation of Eligible Assignees, then the Revolving Commitment nonetheless shall be increased to the extent any Lender or Lenders and/or Eligible Assignees expressly commit thereto pursuant to this [Section 2.1.7]. Provided the conditions set forth in Section 6.2 are satisfied, total Revolver Commitments shall be increased by the requested amount (or such lesser amount committed by any Lender or Lenders and Eligible Assignees) on a date agreed upon by Agent and Borrower Agent. Agent, Borrowers, and new and existing Lenders shall execute and deliver such documents and agreements as Agent deems appropriate to evidence the increase in and allocations of Revolver Commitments. On the effective date of an increase, all outstanding Revolver Loans, LC Obligations and other exposures under the Revolver Commitments shall be reallocated among Lenders, and settled by Agent if necessary, in accordance with Lenders’ adjusted shares of such Commitments.

Revolver Commitment. Bank agrees, upon the terms and subject to the conditions hereinafter set forth, to make revolving loan advances (the "Revolver Loan") to Borrowers from the Closing Date until the Revolver Final Maturity Date, or until such later date as Bank shall have extended its Revolver Commitment in writing unless the Revolver Commitment shall be sooner terminated pursuant to the provisions of this Agreement, in such amounts as may from time to time be requested by Borrowers for payment of their existing secured indebtedness, development of oil and gas reserves, working capital needs, capital expenditures of Borrowers and for the issuance of standby letters of credit. In no event shall the aggregate unpaid principal amount of the Revolver Loan advanced, outstanding and unpaid at any time under the Revolver Note plus the amount of the requested Revolver Loan advance plus the amount of Letter of Credit Exposure at any time exceed the lesser of # the Collateral Borrowing Base (as calculated in accordance with the provisions of Article V of this Agreement) or # the Revolver Commitment Amount, notwithstanding the face principal amount of the Revolver Note from time to time.

Revolver Note. Borrowers shall have delivered the Revolver Note to the order of the Bank, appropriately executed.

Subject to the terms and conditions of this Agreement, and during the term of this Agreement, each Revolving Lender agrees (severally, not jointly or jointly and severally) to make revolving loans to Borrowers which in the aggregate at any one time outstanding are not to exceed the lesser of:

Revolver Loans Each Lender agrees, severally on a Pro Rata basis up to its Revolver Commitment, on the terms set forth herein, to make Revolver Loans to Borrowers from time to time through the Commitment Termination Date The Revolver Loans may be repaid and reborrowed as provided herein In no event shall Lenders have any obligation to honor a request for a Revolver Loan if the unpaid balance of Revolver Loans outstanding together with the LC Obligations at such time, plus the requested Loan, would exceed the Borrowing Base

Revolver Notes The Revolver Loans made by each Lender and interest accruing thereon shall be evidenced by the records of Agent and such Lender At the request of any Lender, Borrowers shall deliver to such Lender a promissory note evidencing its Revolver Loans

“Required Lenders” means at any time Lenders having at least 50.01% of the aggregate amount of the Revolver Commitments or, if the Revolver Commitments are no longer in effect, Lenders holding at least 50.01% of the aggregate outstanding principal amount of the Revolver Notes; provided, however, that the Revolver Commitments and any outstanding Revolver Advances of any Defaulting Lender shall be excluded for purposes of making a determination of Required Lenders; provided, further, that at least three (3) Lenders, including the Administrative Agent, shall be required to constitute “Required Lenders” hereunder.

“Pro Rata Share” means, as of any date of determination, with respect to each Lender with a Revolver Commitment, the percentage obtained by dividing # the Revolving Loan Exposure of such Lender by # the aggregate Revolving Loan Exposure of all Lenders; provided, that, if the Revolver Commitments have been terminated, the Pro Rata Share shall be determined as if the Revolver Commitments had not been terminated and based upon the Revolver Commitments as they existed immediately prior to their termination.

“Total Unused Revolver Commitments” means at any date, an amount equal to: # the aggregate amount of the Revolver Commitments of all of the Lenders at such time, less # the sum of the aggregate outstanding principal amount of the Revolver Advances of all of the Lenders at such time.