EXHIBIT 10.21 BASE CONTRACT FOR SHORT-TERM SALE AND PURCHASE OF NATURAL GAS This Base Contract is entered into as of the following date: April 1, 1999 The parties to this Base Contract are the following:Pennaco Energy Inc • August 12th, 1999 • Crude petroleum & natural gas
EXHIBIT 10.20 GAS PURCHASE AGREEMENT THIS AGREEMENT is made and entered into as of this 16th day of March, 1999, to be effective on the 1st day of April, 1999 (the "Effective Date"), by and between WESTERN GAS RESOURCES, INC. a Delaware corporation...Gas Purchase Agreement • August 12th, 1999 • Pennaco Energy Inc • Crude petroleum & natural gas • Colorado
EXHIBIT 10.18 GAS GATHERING AGREEMENTGas Gathering Agreement • August 12th, 1999 • Pennaco Energy Inc • Crude petroleum & natural gas • Colorado
II. SCOPE OF AGREEMENT AND OWNER'S RESERVATIONSGas Gathering Agreement • August 12th, 1999 • Pennaco Energy Inc • Crude petroleum & natural gas
EXHIBIT 10.22 GAS SALES AND PURCHASE AGREEMENT THIS AGREEMENT is made and entered into as of this 1st day of March, 1999 by and between MONTANA-DAKOTA UTILITIES CO., a division of MDU Resources Group, Inc., a Delaware corporation, hereinafter referred...Gas Sales and Purchase Agreement • August 12th, 1999 • Pennaco Energy Inc • Crude petroleum & natural gas
