The 12.5-acre Anderson Development site is an active chemical manufacturing facility in Adrian, Madison Township, Lenawee County, Michigan. The site is in a 40-acre industrial park, and is comprised of several areas of contamination that exceed health-based levels, including a 0.5-acre former process wastewater pretreatment lagoon containing lagoon sludge, clay underlying the lagoon, and a small quantity of soil near the lagoon. From 1970 to 1979, the plant produced 4,4-methylene bis(2-chloroaniline) (MBOCA), a hardening agent for the production of polyurethane plastics. Process wastewater was discharged directly to surface water until 1973, when it was discharged to a publicly owned treatment works (POTW). In 1979, the State ordered the POTW not to accept the waste stream because of the decreased efficiency of the POTW resulting from MBOCA. In 1980 and 1981, the site owner and the State performed a cleanup action of all contaminated site areas with levels of MBOCA above 1 ppm. This included decontaminating the plant, sweeping streets, shampooing/vacuuming residential carpet, and removing some surface soil. The Record of Decision (ROD) addresses the remediation of the pretreatment lagoon area. The primary contaminants of concern affecting soil and lagoon sludge are organics, namely MBOCA and its degradation products.