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Sequoia 680 Chesapeake Dnve Redwood City CA 94063 (4 15) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 96W FAX(510)988 9673 <br /> (1) <br /> (11i7 Analytiea1 819 StnkerAvenue Suites Sacramento CA 95834 (916) 921 9640 FAX(916)921 0100 <br /> 41rown & Caldwell Client Project ID ARCO 02133, Stockton, CA Sampled Aug 19, -1997 <br /> 9616 Micron Ave , Suite 600 Sample Matrix Water Received Aug 20, 1997 <br /> Sacramento, CA 95827 Analysts Method EPA 5030/8020, DHS Luft Reported Sep 4, 1997 <br /> Attention Steve Misner First Sample # 708-0770 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Sample Sample <br /> Analyte Units Results Results <br /> erg/L 708-07,70 708-0 71 <br /> Purgeable N D 750 <br /> Hydrocarbons Reporting Limit 50 50 <br /> Benzene N D 18 <br /> Reporting Limit 050 050 <br /> Toluene N D 30 <br /> Reporting Limit 050 050 <br /> Ethyl Benzene N D 36 <br /> Reporting Limit 050 050 <br /> .Total Xylenes N D 19 <br /> Reporting Limit 050 050 <br /> Chromatogram Gasoline <br /> Pattern C6-C12 <br /> Quality Control Data <br /> Date Analyzed 08/26/97 08/26/97 <br /> Instrument Identification GCHP-7 GCHP-7 <br /> Surrogate Recovery, % 92 135 <br /> (QC 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 /> SE IA ANALYTIC , 1=LAP #1624 <br /> ,A <br /> n C Schneider <br /> roject Manager/Sacramento Laboratory <br /> 7080752 B RS <4> <br />