Implementation Agreements

Implementation Agreements. Means: the ISDA Master Agreement between Enogex and OERI, dated as of December 1, 1998, as amended or succeeded; the NAESB Base Contract for Sale and Purchase of Natural Gas between Enogex and OERI, dated as of November 8, 2007, as amended or succeeded; and any other ISDA Master Agreement, NAESB Base Contract for Sale and Purchase of Natural Gas, or similar agreement between OERI and any Enogex Group member.