Dominion and Exterran Holdings, Inc., will team up to provide increased natural gas processing in the Appalachian Basin of the US. Under the agreement, two natural gas processing plants will be designed, built and installed by Exterran. One will be an 8 million-cf/d-capacity plant in Carlisle, Ohio, and the other a 10 million-cf/d-capacity plant in Schultz, West Virginia. The two plants will be owned and operated by Exterran. Construction is expected to begin immediately. Commercial operation of the Carlisle plant is anticipated in January 2011 and commercial operation of the Schultz plant is anticipated in May 2011.