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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364-9600 FAX(415) 364 9233 <br /> 404 N Wigec Lane Walnut Creek CA 94598 (510) 988 9600 FAX(S10)988 9673 <br /> Analytical 819 StnkerAvenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921-0100 <br /> Own & Caldwell Client Project ID ARCO 02133, Stockton, CA Sampled Jun 5, 1997 <br /> 9616 Micron Ave Suite 600 Sample Matrix Water Received Jun 5, 1997 <br /> Sacramento, CA 95827 Analysis Method EPA 5030/8020, DHS Luft Reported Jun 18, 1997 <br /> Attention Steve Misner First Sample # 706-0186 y <br /> t <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Sample Sample Sample Sample Sample Sample <br /> Analyte Units Results Results Results Results Results Results <br /> Mg/L 706-0186 706-0137 706-0188 7,05--0,189 706-0190 706-0191 <br /> PR- MW 4 r rE-12 E-11 <br /> Purgeable N D N D N D N D 82 900 <br /> Hydrocarbons Reporting Limit 50 50 5o 50 50 50 <br /> Benzene N D N D N D N D N D 13 <br /> Reporting Limit 050 050 050 050 050 050 <br /> Toluene N D N D N D N D N D 1 4 <br /> Reporting Limit 050 050 050 050 050 050 <br /> Ethyl Benzene N D N D N D N D N D 47 <br /> Reporting Limit 050 050 050 050 050 050 <br /> �otal Xylenes N D N D N D N D N D 13 <br /> Reporting Limit 050 050 050 050 050 050 <br /> Chromatogram - -- Weathered Weathered <br /> Pattern Gasoline Gasoline <br /> C6-C12 C6-C12 <br /> Duality Control Data <br /> Date Analyzed 06/16/97 06/16/97 06/16/97 06/16/97 06/16/97 06/16/97 <br /> Instrument Identification GCHP-2 GCHP-2 GCHP-2 GCHP-2 GCHP-7 GCHP-7 <br /> Surrogate Recovery, % 84 84 84 84 88 93 <br /> (OC Limits = 60-140%) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reporter!as N E) were not detected at or above the reporting limit <br /> SEQUOIA ANALYTICAL, ELAP 01624 <br /> &&t" M FF.L Myo <br /> Edana M Fruciano <br /> Project Manager/Sacramento Laboratory <br /> 70601 s6 BR5 <1> <br /> �a <br />