AMENDMENT

Exhibit 10.37

No. CF101C

AMENDMENT

THIS AMENDMENT is entered into as of November 28, 2001, between CoBANK, ACB (“CoBank”) and PETROUS, L.L.C., Des Moines, Iowa, (the “Company”).

BACKGROUND

CoBank and the Company are parties to a Master Loan Agreement dated September 1, 1999, (such agreement, as previously amended, is hereinafter referred to as the “MLA”). CoBank and the Company now desire to amend the MLA. For that reason, and for valuable consideration (the receipt and sufficiency of which are hereby acknowledged), CoBank and the Company agree as follows:

1. Section 10(A) of the MLA is hereby amended and restated in its entirety to read as follows:

(A) The Company will have at the end of each quarter (1) an excess of current assets over current liabilities of not less than $2 million; (2) an excess of total assets over total liabilities of not less than $1.4 million (both as determined in accordance with GAAP consistently applied).

2. Except as set forth in this amendment, the MLA shall continue in full force and effect as written.

IN WITNESS WHEREOF, the parties have caused this amendment to be executed by their duly authorized officers as of the date shown above.

CoBANK, ACB						PETROUS, L.L.C.
By:		/s/				By:		/s/ Xxxxxx X. Xxxxxxx
Title:		Asst. Vice President				Title:		Treasurer