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( i <br /> Sequoia 680 Chesapeake Drive Rcdwood 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 /> Iwo Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921.9600 FAX(9t6)921.0ioo <br /> Q, cffic Environmental Group Inc. Client Project ID Arco 2093, Tracy, CA Sanipled 2/12-13 f 96 <br /> 11315 Sunrise Gold Circle, #M Sample Matrix: Water Received. Feb 14, 1996.; <br /> Rancho Cordova, CA 95742 Analysis Method: EPA 5030/8015/8020 Reported: Feb 21, 1996::: <br /> i Attention: Greg Barclay First Sample #: 602-0578 <br /> I� <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> r <br /> 1' Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit I.D. I.D. 1' I.D. I.D. I.D. I.D. <br /> ug/L 602-0578 602-0579 602-0580 602-0581 602-0582 602-0583 <br /> ATR-1 ATR-2 ATR-3 ATR-4 ATR-5 ATR-6 <br /> x <br />} Purgeable <br /> Hydrocarbons 50 120 N.D. 1,500 6,300 92 N.D. <br /> Benzene 0.50 N.D. N.D. 89 N.D. 1.0 N.D. <br /> j 3E <br /> E y <br /> Toluene 0.50 N.D. N.D. N:D. N.D. N.D. N.D. <br /> Ethyl Benzene 0.50 2.2 N.D. 43 340 N.D. N.D. <br /> Total Xylenes 0.50 N.D. N.D. 150 150 N.D. N.D. <br /> Chromatogram Pattern: Weathered -- Gasoline Weathered Gasoline -- <br /> Gasoline C6-C12 Gasoline C6-C12 <br /> C6-C12 >C7 <br /> Quality Control Data <br /> Report Limit Multiplication Factor: 1.0 1.0 10 50 1.0 1.0 <br /> Date Analyzed: 02/17/96 02/17/96 02/17/96 02/17/96 02/17/96 02/17/96 <br /> Instrument Identification: GCHP-1 GCHP-1 GCHP-2 GCHP-1 GCHP-2 GCHP-1 <br /> II <br /> Surrogate Recovery, %-. 91 81 89 90 94 92 <br /> (QC Limits 70-130%) <br /> Purgeabte Hydrocarbons are quantitated against a fresh gasoline standard. <br /> Analytes reported as N.D.were not detected at or above the reporting limit. <br /> SEQUOIA ANALYTICAL, ELAP #1624 <br /> Janet H an <br /> Project Manager/Sacramento Laboratory <br /> 6020578.PES <I> <br /> -A ' <br /> _ �1 <br />