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' Philip Environmental Services Corporation <br /> 210 West Sand Bank Road <br /> PHILIP�Q Columbia, Illinois 62236 <br /> a Phone 618-281-7173 FAX 618-281-5120 <br /> - MEMORANDUM - <br /> TO <br /> MEMORANDUM -TO Ken Olson FROM Paul Anderson <br /> cc Mark Milward DATE February 5, 1997 <br /> PROJECT NUMBER 125997 <br /> SUBJECT ANALYTICAL DATA QA REVIEW - EGC/STOCKTON (DECEMBER 96) <br /> The analytical data for the EGC-Stockton, CA site samples, collected on December 16-18, 1996, <br /> have had a limited review based on the information provided by the laboratory The data package <br />' included a summary of sample results with the supporting raw sample chromatograms The <br /> available data was reviewed in accordance with the guidelines set forth in the USEPA <br /> "Laboratory Data Validation Functional Guidelines for Evaluating Organic and Inorganic <br /> Analyses", 1994, and the method specific quality requirements The review consisted of checking <br /> holding times, method blank data, surrogate limits, and MS/MSD data <br />' The samples were analyzed for their project selected list of parameters, which included the <br /> following methods BTEX+MTBE (8020/602/P&T), and TPH as Gasoline (8015/P&T) <br />' The analyses were performed and reported by West Laboratory located in Davis, Califorma, for <br /> the samples as listed in Table 1 <br />' Comments _ <br /> The data appears acceptable as given The method blanks were non-detect The surrogates and <br /> the matrix spikes had acceptable percent recoveries All analyses were performed within the <br />' proper holding period The trip blank had no reported contamination <br /> The only parameter that could be evaluated for alkalinity, nitrate, sulfate, and iron was the holding <br />' period criteria All analyses were performed within the proper holding times <br /> 2/6/97/E 11259971QADEC96W DOC <br />