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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364.9600 FAX(415) 364-9233 <br /> 404 N.Wiget Lane Walnut Creek,CA 94598 (510) 988.9600 FAX(510)988.9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921.9600 FAX(916)92t.0100 <br /> L. <br /> Pacific nvironmental Group,.Inc. ..Client Project ID: Arco 434, Lodi, CA Sampled: Nov 22, 1996 <br /> 11315 Sunrise Gold Circle, #M Sample Matrix: Water Received: Nov 26, 1996:.". <br /> Rancho Cordova, CA 95742 Analysis Method: EPA 5030/8020, DHS Luft Reported: Dec 11, 1996:;: <br /> Attention: Greg Barclay First Sample#: 611-1191 <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 /> pg/L 611-1191 611-1192 611-1193 611-1194 611-1195 611-1196 <br /> WtA W2 W3 W5 W9 TB-1 <br /> Purgeable N.D. N.D. N.D. N.D. N.D. N.D. <br /> Hydrocarbons Reporting Limit: 50 50 50 50 50 50 <br /> Benzene N.D. 0.72 N.D. N.D. N.D. N.D. <br /> Reporting Limit: 0.50 0.50 0.50 0.50 0.50 0.50 <br /> Toluene N.D. 1.5 N.D. N.D. N.D. N.D. <br /> Reporting Limit: 0.50 0.50 0.50 0.50 0.50 0.50 <br /> Ethyl Benzene N.D. 0.56 N.D. N.D. N.D. N.D. <br /> • Reporting limit: 0.50 0.50 0.50 0.50 0.50 0.50 <br /> Total Xylenes N.D. 5.1 N.D. N.D. N.D. N.D. <br /> Reporting Limit: 0.50 0.50 0.50 0.50 0.50 0.50 <br /> Chromatogram <br /> Pattern: <br /> Quality Control Data <br /> Date Analyzed: 12/03/96 12/03/96 12/03/96 12/03/96 12/03/96 12/03/96 <br /> Instrument Identification: GCHP-1 GCHP-1 GCHP-1 GCHP-1 GCHP-1 GCHP-1 <br /> Surrogate Recovery, %: 91 94 94 92 97 95 <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 /> SEQU IA ANALYTICAL, ELAP #1624 <br /> 7/6nd�aC. Schn der <br /> Project Manager/Sacramento Laboratory <br /> 61 11191.PES <1> <br />