The Anaconda Aluminum Co./Milgo Electronics Corp. site covers 3 acres in an industrial area of Miami, Florida. The two companies ran electrochemical aluminum coating facilities there from 1957 to 1984. The U.S. Environmental Protection Agency (EPA) added the site to the National Priorities List (NPL) in 1990 because facility operations left behind contaminated soil and groundwater. The NPL is the federal list of the most serious hazardous waste sites in the country.
Eight contaminants were identified in groundwater during the site evaluation phase. They are 1,2-dichloroethene, aldrin, Aroclor 1248, arsenic, vinyl chloride, chromium, lead, and manganese. EPA determined these chemicals posed an unacceptable risk to human health or the environment based on the amounts present and their potential health effects. The primary exposure concern was people ingesting or touching contaminants in soil and groundwater.
The two responsible companies, along with EPA and the Florida Department of Environmental Protection, investigated conditions and carried out cleanup work. Between 1993 and 1995, the potentially responsible parties removed all contaminated soils and completed groundwater monitoring. In 1994, EPA issued a Record of Decision stating no further cleanup action was required. Follow-up investigations confirmed the site no longer posed a threat to public health or the environment. EPA deleted the site from the NPL in July 1998. The site was declared ready for anticipated reuse in September 2007, and EPA no longer requires Five-Year Reviews here.
Human exposure is currently under control across the entire site. There are no unacceptable exposure pathways, and all cleanup goals for current and reasonably anticipated future land uses have been met, provided required land-use restrictions remain in place. Today, industrial operations, warehouses, and a boat manufacturing facility occupy the site. As of December 2024, three businesses operate there, employing five people and generating about $1.49 million in annual sales.
Because the site has been deleted from the NPL and cleanup is complete, no further remedial activities are planned and the site profile will not be updated going forward. Community members with questions can contact the EPA Remedial Project Manager.
