OVERLAND PASS PIPELINE COMPANY

Overland Pass Pipeline Company is a joint venture that ONEOK Partners and Williams established in May 2006. The Overland Pass Pipeline includes a 760-mile natural gas liquids (NGL) pipeline from Opal, Wyo., to the Mid-Continent NGL market center in Conway, Kan., along with 150- and 125-mile extensions into the Piceance and Denver-Julesberg Basins in Colorado, respectively. The Overland Pass Pipeline is designed to transport approximately 245,000 barrels per day of natural gas liquids.