Robert S. Purgason has served as Chief Operating Officer of our general partner since January 2010. Prior to joining our general partner, Mr. Purgason spent five years at Crosstex Energy Services, L.P. and was promoted to Executive Vice President—Chief Operating Officer in November 2006. Prior to Crosstex, Mr. Purgason spent 19 years with The Williams Companies in various senior business development and operational roles. Mr. Purgason began his career at Perry Gas Companies in Odessa, Texas, working in all facets of the natural gas treating business. Mr. Purgason graduated from the University of Oklahoma in 1978.