This development document presents the findings of an extensive study of the synthetic resin segment of the Plastics and Synthetics Industry for the purposes of developing effluent limitation guidelines, and standards of performance for the industry to implement Sections 304, 306 and 3O7 of the Federal Water Pollution Control Act of 1972 PI 92-500). Guidelines and standards were developed for the following major products: ABS/SAN; Acrylics; Cellophane; Cellulose Acetate; High-Density Polyethylene; Low-Density Polyethylene; Nylon 6, Nylon 66; Polyester; Polypropylene; Polystyrene; Polyvinyl acetate; Polyvinyl Chloride; Rayon. Effluent limitation guidelines contained herein set forth the degree of reduction of pollutions in effluent that is attainable through the application of best practicable control technology currently available (BPCTCA), and the degree of reduction attainable through the application of best available technology economically achievable (BATLA) by existing point sources for July 1, 1977, and July 1, 1983 respectively. Standards of a available demonstrated technology (BADT). (AN).