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Sequoia 680 Chesapeake Drive Redwood CiM CA 94063 (415) 364-9600 FAX(415) 364-9233 <br /> 404 N.Wiget lane Walnut Creek,CA 94598 (510) 989-9600 FAX(510)988.9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)92t-0100 <br /> EMCbN Associates Clienf'Prolect ib: Arco 2186.Stockton Sam leo: `'Au 29, 1995' <br /> 1433 N. Market Blvd. Sample Matrix: Soil Received: Aug 30, 1995:< <br />' Sacramento,CA 95834 Analysis Method: EPA 5030/8015/8020 Reported: Sep 13, 19951;:: <br /> Attention: Claudio Avila First Sample#: 508-1519 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> ' Reporting Sample Sample Sample <br /> Analyte Limit I.D. I.D. I.D. <br /> mg/kg 508-1519 508-1520 508-1521 <br /> ' 64(21.5) B-4(36.5) B4(56.5) <br /> Purgeabie <br /> Hydrocarbons 1.0 N.D. N.D. N.D. <br /> Benzene 0.0050 N.D. N.D. N.D. <br /> ' Toluene 0.0050 N.D. N.D. N.D. <br /> Ethyl Benzene 0.0050 N.D. N.D. N.D. <br /> Total Xylenes 0.0050 N.D. N.D. N.D. <br /> ' Chromatogram Pattern: -- -- -- <br /> Quality Control Data <br /> Report Limit Multiplication Factor: 1.0 1.0 1.0 <br /> Date Analyzed: 9/8/95 9/8/95 9/8/95 <br /> ' Instrument identification: GCHP-1 GCHP-1 GCHP-1 <br /> Surrogate Recovery, %: 82 81 86 <br /> ' (QC Limits = 70-130%) <br /> ' Purgeable Hydrocarbons are quantitated against a Irash gasoline standard. <br /> Analytes reported as N.D.were not detected at or above the reporting limit. <br /> SE"UOiA ANALYTICAL, FLAP #1624 <br /> Linda C. Schneider <br /> Project Manager SM1517.EMC <2> <br /> 1 <br />