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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 1 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Stnker Avenue Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921 0100 <br /> Pacific Environmental Group Client Project ib 920 122 1A/Chevron 9-9840 Sampled Mar 2, 1998 <br />'j 11315 Sunrise Gold Circle, Ste M Sample Matrix Soli Received Mar 3, 1998 <br /> Rancho Cordova, CA 95742 Analysis Method PPA 5030/8020, DHS Luft Reported Mar 11, 1998 <br /> Attention Tim Anenson First Sample# 803-0071 <br /> 1 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br />' Reporting Sample Sample Sample <br /> Analyte Limit I D I D LD <br /> mg/kg 803-0071 803-0072 803-0073 <br /> tT4 @ 9' T4 @ 12` T5 @ 8' <br /> Purgeabie <br />' Hydrocarbons 1 0 120 55 N D <br /> Benzene 00050 N D N D N D <br /> Toluene 00050 089 0 011 N D <br />' <br /> Ethyl Benzene 00050 088 0 015 N D <br /> Total Xylenes 00050 67 012 N D <br />' Chromatogram Pattern Weathered Weathered - <br /> Gasoline Gasoline <br /> C6-C12 C6-C12 <br /> 1 Quality Control Data <br />' Reporting Limit <br /> Multiplication Factor 50 10 10 <br /> Date Analyzed 03/04/98 03/04/98 03/04/98 <br /> Instrument Identification GCHP-1 GCHP-1 GCHP-1 <br /> Surrogate Recovery, % 99 94 96 <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 /> SEQUOIA ANALYTICAL, FLAP #1624 <br /> da C Schne der <br /> rolect Manager/Sacramento Laboratory <br />' 8030071 PES >> <br />