COMPLIANCE INFO_1978-1992 - Laserfiche WebLink

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70-1029-02 0 Swam 1 SUMMARY OFT PESEJIITS Fla!%XH CAMP 7 At the French Camp landfill, results of the air quality solid waste assessment test (SWAT) field program indicate that although certain target constituents were measured above detection limits in the air samples, air contaminants apparently are not being emitted from the landfill into the ambient atmosphere at levels which would be likely to pose a potential threat to public health or safety. Vinyl chloride was not detected in any of the ambient air samples submitted for analysis. only three Attachment 1 compounds (perchloroethylene, carbon tetrachloride, and methyl chloroform) were present in measurable quantities. None of these compounds was detected in every sample. Gas stream characterization consisted of internal landfill gas testing and integrated surface sampling. The landfill gas was sampled at five driven well locations, and the samples were analyzed for fixed gases and Attachment 1 compounds. Of the ten constituents of concern, only two were measured above detection limits in one or more of the samples (perchloroethylene and trichloroethylene) . The eight remaining compounds were not detected in any gas sample. Methane concentrations in the gas ranged front 3.5 percent to 57.1 percent by volume. In addition, an integrated sample was collected immediately above the surface Of the approved 50,000-square-foot grid. The sample was tested for the presence of Attachment 1 compounds and total organic compounds (ToCs) . Three constituents were measured in the low parts-per-billion (ppb) range. These included benzene, perchloroethylene, and methyl chloroform. Trichloroethylene, which was present in two of the interior gas samples, was not detected in the surface air sample. The TOC concentration was 3 ppm (measured as total methane and nomethane hydrocarbons) .