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` ( \ Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9333 <br /> �.•`�r� 1900 Bates Avenue Suite L Concord,CA 94520 (510) 686 9600 FAX (510)686 9689 <br /> Iwo Analytical 819 Straker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Woundwater Technology Client project ID Chevron#9-1918, Stockton,CA ' <br /> Sampled Jun 2, 1995 <br /> 1401 Halyard Drive, Suite 140 Sample Matrix Soil Received Jun 5, 1995 <br /> West Sacramento, CA 95691 Analysis Method EPA 5030/8015/8020 Reported Jun 7, 1995 <br /> Attention Jason Fedota First Sample# 506-0201 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit I D. I D. I.D I D. LD I D <br /> mg/kg 506-0201 506-0202 506-0203 506-0204 506-0205 506-0206 <br /> S812-155 SB12-20 0 S512-250 6612-30 0 SB 12-35 0 SB12-40 0 <br /> Purgeable <br /> Hydrocarbons 10 N D 61 3,400 5,300 1,200 280 <br /> Benzene 00050 N D N D N D N D N D N D <br /> Toluene 00050 N D N D N D N D N D N D <br /> Ethyl Benzene 00050 N D N D N D 25 24 N D <br /> SITotal Xylenes 00050 N D N D 23 190 20 26 <br /> Chromatogram Pattern Unidentified Weathered Weathered Weathered Weathered <br /> Hydrocarbons Gasoline Gasoline Gasoline Gasoline <br /> >Ca 108-1012 C8-C12 C8-C12 CS-C12 <br /> I <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 1 0 100 250 250 50 <br /> Date Analyzed 6/5/95 6/5/95 6/5/95 6/5/95 6/5/95 6/5/95 <br /> Instrument Identification GCHP-1 GCHP-1 GCHP-1 GCHP-1 GCHP-1 GCHP-1 <br /> Surrogate Recovery, % 82 77 86 82 81 85 <br /> (OC Limits = 70-130%) <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 /> SEQUOIA ANALYTICAL, FLAP #1624 <br /> Linda C Schneider <br /> Project Manager <br /> 5060201 GRW c 1> <br />