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t <br /> i 4t <br /> Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364 9600 FAX(650)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(916)921 0100 <br /> EMCON Client Project ID Arco 548, Stockton CA Sampled Feb 13 1998 <br /> 1433 N Market Blvd Sample Matrix Soil Received Feb 13 1998 <br /> Sacramento, CA 95834 Analysis Method EPA 5030/8020 DHS Luft Reported Feb 24 1998 <br /> Attention Mark Capps First Sample # 802-0360 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Sample Sample <br /> Analyte Units Results Results <br /> mg/kg 802-0360 802-0361 <br /> SP-3-A SP-3-13 <br /> Purgeable 29 96 <br /> Hydrocarbons Reporting Limit 10 50 <br /> Benzene 010 060 <br /> Reporting Limit 00050 025 <br /> Toluene 1 1 5 1 <br /> Reporting Limit 00050 025 <br /> Ethyl Benzene 0 59 1 8 <br /> 0 Reporting Limit 00050 025 <br /> Total Xylenes 2 9 10 <br /> Reporting Limit 00050 025 <br /> Chromatogram Weathered Weathered <br /> Pattern Gasoline Gasoline <br /> C6-C12 C6-C12 <br /> Quality Control Data <br /> Date Analyzed 02/17/98 02/17/98 <br /> Instrument Identification GCHP-1 GCHP-1 <br /> Surrogate Recovery, % 104 108 <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 /> UOIA ANALYTICAL, ELAP #)624 <br /> Ronald W Bobel <br /> Project Manager/Sacramento Laboratory <br /> 8020348 EMC <3> <br />