Together with Rockies Express, the entire project will consist of 1264km of new pipeline, more than 237,000hp of compression, meter stations, and other related facilities that will span portions of Colorado, Wyoming, Nebraska, Kansas, Missouri, and New Mexico. FERC chairman Joseph T Kelliher observed: "This pipeline is one of the largest greenfield projects the Commission has certificated in recent years. It promises to bring reliable and affordable gas supplies to US consumers while helping address the disparity in prices for producers in the Rocky Mountain region. The Rocky Mountain region is a major supply source for the Lower 48 states, and its production continues to grow. In addition, the amount of proven reserves, critical for increased production, is growing as well. The increased access to Rocky Mountain supplies afforded by this project will help to offset the production decline in other areas, including the Gulf of Mexico." Rockies Express-West will construct and operate 1140km of 42-in diameter mainline pipeline and related facilities that will commence at the existing Cheyenne Hub and extend eastward to an interconnection with Panhandle Eastern Pipeline Co in Audrain County, Missouri. Rockies Express also proposes to construct approximately 177,000hp of additional compression at five new compressor stations and two currently-certificated compressor stations. In addition, Rockies Express proposes to lease 625,000Dth/d of capacity on Overthrust's system. TransColorado will construct and operate facilities that will include new compression totalling 15,390hp, to transport an additional 250,000Dth/d of gas from the Blanco Hub area in San Juan County, New Mexico, through the TransColorado pipeline system to Rockies Express at the an existing interconnection located at the Meeker Hub in Rio Blanco County, Colorado. Overthrust will construct and operate an estimated 124km of new pipeline that will extend from the terminus of its existing transmission system to an interconnection with Rockies Express at Wamsutter in Sweetwater County, Wyoming. In addition, Overthrust will install 45,000hp of compression at two new compressor stations. This project is designed to provide an additional 750,000Dth/d of capacity to an existing interconnection with Wyoming Interstate Co, and 625,000Dth/d of capacity to a proposed delivery point with Rockies Express at Wamsutter.