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Philip Environmental Services Corporation ' PHILIP 210 West Sand Bank Road Columbia, Illinois 62236 l $ Phone 618-281-7173 FAX 618-281-5120 MEMORANDUM - ' TO Mark Milward FROM Paul Anderson cc Ken Olson DATE October 17, 1996 ' PROJECT NUMBER 125997 ' SUBJECT ANALYTICAL DATA QA REVIEW - EGC/STOCKTON, CA (9196) The analytical data for the EGC-Stockton, CA site samples, collected on September 16-18, 1996, have had a limited review based on the information provided by the laboratory The data package included a summary of sample results with QC batch summary results The available data was ' reviewed in accordance with the guidelines set forth in the USEPA"Laboratory Data Validation Functional Guidelines for Evaluating Organic and Inorganic Analyses", 1994, and the method '• specific quality requirements The review consisted of checking holding times, surrogate limits, blank spike data, method blank data, and MS/MSD data ' The samples were analyzed for their project selected list of parameters included the following methods BTEX+MTBE (602/P&T), and TPH as Gasoline (8015/P&T) The analyses were performed and reported by West Laboratory, for the following samples Sample ID Collection Date Matrix COC Parameters ' TB01 9/16/96 water West BTEX+MTBE, TPH/gas MW-13 9/16/96 water West BTEX+MTBE, TPH/gas MW-03 9/16/96 water West BTEX+MTBE, TPH/gas ' MW-06 9/17/96 water West BTEX+MTBE, TPH/gas MW-04 9/17/96 water West BTEX+MTBE, TPH/gas MW-10 9/17/96 water West BTEX+MTBE, TPH/gas ' MW-02 9/17/96 water West BTEX+MTBE, TPH/gas MW-05 9/17196 water West BTEX+MTBE, TPHlgas MW-07 9/17/96 water West BTEX+MTBE, TPH/gas ' MW-08 9/17/96 water West BTEX+MTBE, TPHlgas MW-01 9118/96 water West BTEX+MTBE, TPH/gas ' The samples were received by West Laboratory on September 20, 1996, in good condition ' 10/22/96/E 11259971QASEP96W DOC