The report identifies and analyzes economic impacts that are likely to result from water pollution control regulations on the organic chemicals, plastics and synthetic fibers (OCPSF) industry. The regulations included EPA effluent limitations and standards. The report supplements technical studies supporting the issuance of the OCPSF regulations by estimating the broader economic effects which might result from the application of various control methods and technologies. The primary economic impact variables assessed include the costs of the contemplated regulations, and the potential for these regulations to cause plant closure, unemployment, reductions in profitability, shifts in the balance of trade and anticompetitive effects on small business and new facilities.