In 2001, Dempsey Uniform & Linen Supply Inc. initiated a plant upgrade and modernization program at its Sunbury, PA, facility. As a charter member of LaundryESP¤, the company’s efforts met many of the goals of that voluntary environmental stewardship program, which has the endorsement of the U.S. Environmental Protection Agency (EPA). The installation of a new washroom, consisting of 900 lb. washer/extractors, would save both water and energy, and improve efficiency and customer service. However, the reduction in water usage also increased the concentration of oil and grease (O&G). That, in turn, compounded a preexisting problem the company faced—drastic variations ...