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.

SECTION #Commitments to Make Advances. (a) Each Lender severally agrees, on the terms and conditions set forth herein, to make Revolver Advances to the Borrower from time to time before the Termination Date; provided that, immediately after each such Revolver Advance is made, the aggregate outstanding principal amount of Revolver Advances by such Lender shall not exceed the amount of the Revolver Commitment of such Lender at such time, provided further that the aggregate principal amount of all Revolver Advances shall not exceed the: lesser of: # the Borrowing Base; and # the aggregate amount of the Revolver Commitments of all of the Lenders at such time. Each Revolver Advance shall be in an aggregate principal amount of $1,000,000 or any larger multiple of $100,000 (except that any such Revolver Advance may be in the aggregate amount of the Total Unused Revolver Commitments) and shall be made from the several Lenders ratably in proportion to their respective Revolver Commitments. Within the foregoing limits, the Borrower may borrow under this Section, repay or, to the extent permitted by Section 2.10, prepay Revolver Advances and reborrow under this Section 2.01 at any time before the Termination Date.

Revolver Note. On the Closing Date, Borrowers shall execute and deliver to the order of the Bank a promissory note instrument in the stated face principal amount of $15,000,000.00 (the "Revolver Note"). The Revolver Note shall be dated as of the Closing Date and shall bear interest on unpaid balances of principal from time to time outstanding at a variable annual rate equal from day to day to the Base Rate plus one hundred and fifty basis points (1.50%), and in no event lower than 8.50%. The Revolver Note shall be payable as set forth therein. After maturity (whether by acceleration or otherwise), the Revolver Note shall bear interest at a per annum rate equal from day to day to the Default Rate payable on demand, unless there has been no default in Borrowers' payment obligations (other than Borrowers' failure to pay all unpaid principal and all accrued but unpaid interest due and payable at the Revolver Final Maturity Date) and Borrowers and Bank are negotiating a renewal or extension of the Revolver Note, in which circumstance the non-Default Rate specified herein shall continue to apply, but only until the Bank deems negotiations complete, in its sole discretion. Interest shall be calculated on the basis of a year of 360 days, but assessed for the actual number of days elapsed in each accrual period. Notwithstanding the stated face principal amount of the Revolver Note from time to time, in no event shall Borrowers request nor shall Bank be obligated to make any Revolver Loan advance that causes or results in the aggregate outstanding principal amount of the Revolver Note plus Letters of Credit Exposure to exceed the lesser of the then applicable Revolver Commitment Amount or the Collateral Borrowing Base then in effect.