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<0 <br /> j Sequoia 680 Chesapeake Dnve 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 /> 0 <br /> EMCON Client Project ID ARCO 2168, Stockton, CA Sampled Feb 9, 1998 <br /> 1433 N Market Blvd Sample Matrix Water Received Feb 10, 1998 <br /> Sacramento, CA 95834 Analysis Method EPA 5030/8020, DHS Luft deported Feb 19, 1998 <br /> Attention Dave Foley First Sample # 802-0200 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Sample <br /> Analyte Units Results <br /> ug/L 802-0200 <br /> MW-7 (47) <br /> Purgeable 21,000 <br /> Hydrocarbons Reporting Limit 5,000 <br /> Benzene 1,100 <br /> Reporting Limit 50 <br /> Toluene 2,800 <br /> Reporting Limit 50 <br /> Ethyl Benzene 660 <br /> • Reporting Limit 50 <br /> Total Xylenes 2,700 <br /> Reporting Limit 50 <br /> Chromatogram Weathered <br /> Pattern Gasoline <br /> C6 C12 <br /> Quality Control Data <br /> Date Analyzed 02/17/98 <br /> Instrument Identification GCHP-2 <br /> Surrogate Recovery, % 102 <br /> (QC Llmlts = 60-140%) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Ana€ytes reported as N D were not detected at or above the reporting limit <br /> 5 OIA ANALYTICAL, ELAP #1624 <br /> Ronald W Bobel <br /> Project Manager/Sacramento Laboratory <br /> 13020194 EMC 1�2 <br />