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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 OW 921-0100 <br /> 'Pilo F Weston Client Project IIS San Joaquin County Capitol Projects Sampled Jul 11, 1995 <br /> Y 1 <br /> 2300 Clayton Rd , Suite 1580 Sample Matrix Soil Received Jul 11, 1995 <br /> Concord, CA 94520-2148 Analysis Method EPA 5030/8015/8020 Reported Jul 27, 1995 <br /> Attention David Marks First Sample # 507-0284 <br />' TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br />' Reporting Sample Sample Sample <br /> Analyte Limit ID LD ID <br /> mg/kg 507-0284 507-0285 507-0286 <br />' MW3A 35 MW3A-40' MW3A-45' <br /> Purgeable <br /> Hydrocarbons 10 N D N D N D <br /> Benzene 00050 N D N D N D <br />' Toluene 00050 N D N D N D <br /> Ethyl Benzene 00050 N D N D N D <br />' • Total Xylenes 00050 N D N D N D <br /> Chromatogram Pattern <br /> Quality Control Data <br /> Report Limit Multiplication Factor 10 10 1 0 <br /> Date Analyzed 7/18/95 7/18/95 7/18/95 <br /> Instrument Identification GCHP-1 GCHP-1 GCHP-1 <br /> Surrogate Recovery, % 93 104 100 <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, ELAP #1624 <br /> / L�✓»� ` <br /> Lnda C Schneider <br /> Project Manager <br /> 5070280 ROY <2> <br />