![[logo] US EPA](http://www.epa.gov/epafiles/images/logo_epaseal.gif){kind=logo}
ST. CLAIR COUNTY
EAST ST. LOUIS
Congressional District # 12
ALCOA PROPERTIES
EPA ID# ILSFN0508010Last Updated: April, 2008
Site Description
In 1902, aluminum production operations began at the North Alcoa site. The site was formerly the location of Pittsburgh Lake which was filled in by waste and fill associated with the Alcoa production operations. The largest volume of material at the site is bauxite residue, which is surrounded by gypsum dikes utilized to contain the bauxite at the site. The bauxite is contained in three large areas, called residue disposal areas (RDA's) located on the northeastern portion of the property. The plant operated until the late 1950's and by the mid 1960's, most of the production facilities had been demolished and the land sold. The site is located in an industrial area with active commercial operations occurring on the southern portion of the property. A recreational area is currently located to the northwest of the site.
Site Responsibility
This site is a Superfund alternative site with the current work being conducted by potentially responsible parties under an RI/FS agreement with Federal and state oversight.
Threats and Contaminants
Site soils are contaminated with inorganic compounds. A risk assessment has been submitted for the site and is currently under review. The site PRP is currently investigating materials reuse options and EPA is working with the PRP to assess the viability of long term reuse of site bauxite and fluorogypsum. The site RI and risk assessments will not be finalized until this reuse option evaluation process is complete.
Cleanup Progress
In December 2001, EPA entered into an administrative order on consent with Alcoa, a PRP for the site that required the completion of an RI/FS at the site. This RI/FS is underway at the site and the Agency is currently evaluating materials reuse options for site bauxite and fluorogypsum. A remedial decision for materials reuse is currently anticipated during 2008.