The transaction includes about 260 miles of pipeline and 90,000 horsepower of compression facilities.

These assets, which serve Mamm Creek, Orchard and South Parachute production in the area around Rifle, currently transport about 500 million cubic feet per day of natural gas under long term contracts with multiple producers.

The sale of the Piceance basin assets is expected to close in the fourth quarter of 2011, subject to regulatory approvals and customary closing conditions.