Exhibit 10.10
Base Contract for Sale and Purchase of Natural Gas
This Base Contract is entered into as of the following date: November 1, 2004. The parties to this Base Contract are
the following:
This Base Contract incorporates by reference for all purposes the General Terms and Conditions for Sale and Purchase
of Natural Gas published by the North American Energy Standards Board. The parties hereby agree to the following
provisions offered in said General Terms and Conditions. In the event the parties fail to check a box, the specified
default provision shall apply. Select only one box from each section:
IN WITNESS WHEREOF, the parties hereto have executed this Base Contract in duplicate. File: ULTRA.NAESB
Tenaska Marketing Ventures
and Ultra Resources, Inc. — Houston, TX 77060
11718 Nicholas Street Omaha, NE 68154
363 North Sam Houston Parkway East, Suite 1200
Duns Number: 62-424-0628
Duns Number: 07-110-9974
Contract Number: TMV-S-1495 & TMV-P-1353
Contract Number:
U.S. Federal Tax ID Number: 47-0741451
U.S. Federal Tax ID Number: 83-0320643
Notices:
11718 Nicholas Street Omaha, NE 68164
Address — Same as above
Attn: Manager, Contract Administration
Attn: Natural Gas Marketing — Contract
Administration
Phone: 402-758-6266 Fax: 402-758-6250
Phone: 281-876-0120 Ext. 306 Fax: 281-876-2831
Confirmations:
11718 Nicholas Street Omaha, NE 68154
Address — Same as above
Attn: Contract Administration
Attn: Natural Gas Marketing — Gas Control
Phone: 402-758-6100 Fax: 402-758-6250
Phone: 281-876-0120 Ext. 305 Fax: 281-876-2831
Invoices and Payments:
11718 Nicholas Street Omaha, NE 68154
Address — Same as above
Attn: Gas Accounting
Attn: Natural Gas Marketing — Contract
Administration
Phone: 402-758-6259 Fax: 402-758-6253
Phone