For the past two years, Hatzel & Buehler has performed numerous projects at the Big Sandy Facility. Hatzel & Buehler has completed several controls upgrade projects as well as assisting with the centralization of a new control room. In addition, we are working closely with their engineering department in the development of their B Line Modernization Project. Hatzel & Buehler and Calgon Carbon Corporation have established a working relationship that will continue to grow in the years to come.