Northwest 58th Street Landfill
| Northwest 58th Street Landfill EPA ID: FLD980602643 Location: Hialeah, Dade County, FL Congressional District: 23 NPL Status: Proposed: 12/30/82; Final: 09/08/83; Deleted 10/11/96 Site Repository: Metropolitan Dade County Department of Environment 33 S.W. 2nd Ave., Suite 800 Miami, FL 33130 Documents:
Site Background: Threats and Contaminants In the past, leachate from the landfill contaminated groundwater with heavy metals including arsenic and lead, as well as volatile organic compounds (VOCs) such as vinyl chloride. Potential risks to individuals may have occurred if they drank the contaminated groundwater. The County is treating groundwater extracted from nearby wellfields prior to distribution. Cleanup Approach The site has been addressed in a single phase. Response Action Status Entire Site: The cleanup plan, completed by Metro Dade County, the potentially responsible party, includes: controlling leachate generation by a combination of grading, drainage control, and capping; providing a public water supply to replace approximately 60 contaminated wells; and closing the landfill. The County installed an alternate water supply in 1988 and a leachate interception system in 1989. Additional cover has been applied to the landfill. In early 1991, the contract for grading, capping the landfill with a synthetic membrane, and constructing a stormwater management system, roads, berms, swales, and retention areas was awarded. The landfill was originally scheduled for closure in September 1992; however, during Hurricane Andrew, the landfill suffered damages which delayed the end of the landfill closure until January 1995. Site closure was completed in mid-1995. Cleanup Progress Three Five-Year Reviews of the remedy have been conducted. In each review, the remedy was determined to be protective. The next Five-Year Review will be conducted in 2010.
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