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SEQUOIA ANALYTICAL <br /> 819 Striker Avenue, Suite 8 • Sacramento, CA 98834 <br /> (916) 921-9600 • FAX (916) 921-0100 <br /> EMCON Associates Client Project ID Shell, 4445 Pershing Ave . Stocktonry YTSampled Oct 8, 1992 <br /> 1433 N Market Blvd Sample Matnx Water Received Oct 8, 1992 <br /> Sacramento, CA 95834 Analysis Method EPA 5030/8015/8020 Reported Oct 22, 1992 <br /> Attention Jim Prailla First Sample# 210-0199 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS wir h BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit I.D. I.D. I.D. I.D. I.D. I.D. <br /> Ppm 210-0199 210-0200 210-0201 210-0202 210-0203 210-0204 <br /> MW-1 MW-2 WW-3 MW-4 Feld Blank Trip Blank <br /> tJrgeable <br /> Hydrocarbons 0 050 N D N D N D N D N D N D <br /> Benzene 000050 N D N D N D N D N D N D <br /> Toluene 000050 ND ND ND ND ND ND <br /> Ethyl Benzene 000050 N D N D N D N D N D N D <br />• Total Xylenes 000050 N D N D N D N D N D N D <br /> Chromatogram Pattern -- -- -- - -- -- <br /> QualFty Control Data <br /> Report Limit Multiplication Factor 10 10 10 10 10 10 <br /> Date Analyzed 10/19/92 10/19/92 10/19/92 10/19/92 10/19/92 10/19/92 <br /> Instntment Identification HP-2 HP-2 HP-2 HP-2 HP-2 HP-2 <br /> Surrogate Recovery, % 98 100 99 104 100 99 <br /> (OC Umrts = 70-130%) . <br /> Purgeable Hydrocarbons are quantitated against a trash gasoline standard <br /> Analytes reported as N D were not detected above the stated reporting limit <br /> SEQUOIA ANALYTICAL <br /> Michael R Gges <br /> Laboratory Director <br /> 2100199 EMC <I> <br />