Stage of Clean-up: Remedy Selected
Conditions at Proposal (June 23, 1993): The ALCOA/Lavaca Ba y site is located in Calhoun County in southeast Texas along the Gulf of Mexico. The ALUMINUM Company of America (ALCOA) Point Co mfort plant is located on the shore of Lavaca Bay. The site incl udes contaminated sediments in the bay and an associated man-made dredge spoil island located approximately 1,200 feet west of the ALCOA plant. The dredge spoil island is composed of a 91-acre g ypsum lagoon and a dredge spoil area (covering approximately 50 a cres) that includes five lagoons. The ALCOA plant is located in an industrial area approximately 1.5 miles south of Point Comfort and 4 miles northeast of the City of Port Lavaca. In 1965, ALCOA opened a chlor-alkali production plant that p roduced CHLORINE GAS and SODIUM hydroxide through an electrolytic process that utilized MERCURY cathodes. The two primary sources of hazardous substances at the site identified by EPA to date ar e the gypsum lagoon and the dredge spoil areas. More...