Historic releases of trichloroethylene (TCE) from spills and discharges resulted in the contamination of the surficial aquifer system at the Precision Fabricating & Cleaning Company (PFC) site in Cocoa, Florida. TCE was used at the site during the period from 1964 to 1977 (Apollo program) for the precision cleaning of aerospace ground support equipment. The constituents of concern identified at the site are the chlorinated ethenes: TCE, cis-l,2-dichloroethene (cis-l,2-DCE), trans-1,2-dichloroethene (trans- 1,2-DCE), and vinyl chloride (VC). Detailed investigations completed within the study area revealed the presence of dense non aqueous phase liquid (DNAPL) source areas located on the PFC property and an associated dissolved plume extending approximately 1,200 feet downgradient from the site. Extensive groundwater transect profiling (using depth-discrete sampling) and monitoring of the dissolved plume demonstrated increasing ratios of degradation products with distance from the DNAPL source areas. To address groundwater impacts, a field-scale Remedial Measure Plan (RMP) was approved by the regulatory agencies. The primary objective of the RMP is to prevent or minimize further vertical or horizontal migration of chlorinated solvents from the site.
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