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1 <br /> y.. <br /> Coca-Cola Enterprises-West <br /> USTEC job No. 90054.03 <br /> The Teflon® bailer was decontaminated prior to entering the site and was decontaminated <br /> between samples to prevent potential cross-contamination of the samples. Specific <br /> decontamination procedures for all sampling equipment included washing in an Alconox®water <br /> + i solution followed by a tap water rinse and two distilled water rinses. <br /> 6 <br /> ) <br /> i <br /> 4.0 ANALYTICAL CHEMISTRY PROCEDURES AND RESULTS <br /> This section discusses the analytical chemistry procedures and resulting data. <br /> �» 4.1 ANALYTICAL CHEMISTRY PROCEDURES <br /> ( :ti <br /> i All groundwater samples were collected,transported,and analyzed in general accordance with <br /> 0 <br /> U.S. Environmental Protection Agency(EPA)document SW-846,"Test Methods for Evaluating <br /> r- Solid Waste",3rd Edition. All samples were submitted to Sequoia Analytical, Redwood City, <br /> California for analysis. Each sample was analyzed for total petroleum hydrocarbons (TPH) in <br /> j, <br /> acco <br /> rdance with EPA method 3510/8015 modified for diesel and gasoline,aromatic hydrocarbons <br /> benzene, toluene,ethylbenzene,and total xylenes(BTEX),and total lead. <br /> 4.2 ANALYTICAL CHEMISTRY RESULTS <br /> The analytical chemistry test results of the groundwater samples are summarized in Table 3. A <br /> summary of historical analytical results is presented on Table 4. The laboratory certificates of <br /> dix C. The lead analytical results are reported as milligrams per <br /> analysis are presented in Appen <br /> liter (mg/1) which is equivalent to parts per million (ppm). All other analytical results are <br /> - reported in micrograms per liter(ug/1) which is equivalent to parts per billion(ppb). <br /> �..f gasoline TPH concentrations were below laboratory <br /> The analytical chemistry data indicates that <br /> detection limits in wells MW-3 through MW-6 and have decreased in wells MW-1 and MNI-2 <br /> since the last quarterly sampling in March 1991. A gasoline concentration.of 47 ppb was <br /> reported for MW-2 and 91 ppb was reported for MW-1. TPH quantified as diesel was present= <br /> i l <br /> only in MW-2 at a concentration of 63 ppb. <br /> l; 1, <br /> 4 <br /> i <br />