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Sequoia 680 Chesapeake Drive Redwood City, CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 15) <br /> 404 N. Wiget Lane Walnut Creek, CA 94598 (510) 988-9600 FAX(510)988-9673 <br /> Iwo Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-96W FAX (916)921.0100 <br /> EMCON <br /> Client Project ID. ARCO 286, Stockton, CA Sampled: Oct 30, 1997 <br /> 1433 N. Market Blvd. Sample Matrix: Soil Received: Oct 31, 1997,:; <br /> Sacramento, CA 95834 Analysis Method: EPA 5030/8020, DHS Luft Reported: Nov 14, 1997*- <br /> Attention: Matt Turner First Sample #: 710-1233 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Sample Sample Sample <br /> Analyte Units Results Results Results <br /> mg/kg 710-1233 710-1234 710-1235 <br /> B-9 41 FT B-9 51 Fr SP-1 a,b,c,d <br /> (composite) <br /> Purgeable N.D. N.D. N.D. <br /> Hydrocarbons Reporting Limit: 1,0 1.0 1.0 <br /> Benzene N.D. N.D. N.D. <br /> Reporting Limit: 0.0050 0.0050 0.0050 <br /> Toluene N.D_ N.D. N.D. <br /> Reporting Limit: 0.0050 0.0050 0.0050 <br /> Ethyl Benzene N.D. N.D. N.D. <br /> Reporting Limit: 0.0050 0.0050 0.0050 <br /> Total Xylenes N.D. N.D. N.D. <br /> Reporting Limit: 0.0050 0.0050 0.0050 <br /> Chromatogram <br /> Pattern: <br /> Quality Control Data <br /> Date Analyzed: 11/10/97 11/10/97 11/12/97 <br /> Instrument Identification: GCHP-2 GCHP-2 GCHP-1 <br /> Surrogate Recovery, %: 93 94 92 <br /> (©C Limits = 60-140%) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard. <br /> Analytes reported as N.D.were not detected at or above the reporting limit. <br /> SEQLIAIA ANALYTICAL, ELAP #1624 <br /> i <br /> *"irndaCSchneider <br /> t Manager/Sacramento Laboratory <br /> 7101233.EMC a 1> <br />