In its operations the company, which repairs and overhauls large motor vehicles, uses degreasers and other industrial chemicals that contain chemicals such as methylene chloride and trichlorethylene, classified as hazardous wastes" under the Resource Conservation and Recovery Act (RCRA), 42 U.S.C. Secs. 6901-6987 (1982) and pollutants" under the Clean Water Act, 33 U.S.C. Secs. 1251-1376 (1982).