U S Liquids Inc.. The Group's principal activity is to provide liquid waste management services, including collection, processing, recovery and disposal services in North America. The Group is organized into three divisions: the Commercial Wastewater Division, the Industrial Wastewater Division and the Oilfield Waste Division. The Commercial Wastewater Division collects, processes and disposes of nonhazardous liquid waste and recovers saleable by-products from certain waste streams. The Industrial Wastewater Division collects, processes and disposes of hazardous and nonhazardous waste and recovers saleable by-products from certain waste streams. The Oilfield Waste Division processes and disposes of waste generated in oil and gas exploration and production. The Group operates 40 facilities in 16 States. It also operates in Canada. Commercial Wastewater management accounted for 47% of 2002 revenues; Industrial Wastewater management, 40% and Oilfield Waste management, 13%.