The 2-acre Mattiace Petrochemicals site is an inactive liquid storage and redistribution facility in Glen Cove, Nassau County, New York. Surrounding land use is primarily industrial. Glen Cove Creek, a potential wetland area, is located south of the site. The site overlies a system of three unconsolidated sedimentary aquifers, of which the surficial Upper Glacial Aquifer has been affected by onsite contamination. From the mid-1960s to 1986, organic solvents were stored, blended, and repackaged onsite. In 1988, EPA characterized and disposed of 100,000 gallons of hazardous liquids offsite from approximately 24 above- and 32 underground storage tanks. In 1989, a second EPA investigation identified approximately 25 buried drums and numerous other containers that were leaking contaminated material into the surrounding soil and ground water. The ROD addresses remediation of onsite source materials, as well as management of migration of contaminated shallow ground water. The primary contaminants of concern affecting the soil, debris, and ground water are VOCs including PCE, TCE, toluene, and xylenes; other organics including PAHs, pesticides, and phenols; and metals including arsenic, chromium, and lead. The selected remedial action for this site is included.