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., <br /> Sequoia 660 Chesapeake Dnve Redwood City,CA 94063 (650) 364 9600 FAX(654)364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (810) 988 9600 FAX(510) 986 9673 <br /> Analytical 819 Sinker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> �III� <br /> 0 <br /> EMCON Client Project ID ARCO 548, Stockton, CA Sampled Feb 10, 1998 <br /> 1433 N Market Blvd Sample Matrix Soil Received Feb 11, 1998 <br /> Sacramento, CA 95834 Analysts Method EPA 5030/8020, DHS Luft Reported Mar 2, 1998 <br /> Attention Mark Capps First Sample # 802-0234 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Sample Sample Sample Sample Sample Sample <br /> Analyte Units Results Results Results Results Results Results <br /> mg/kg 802-0234 802-0235 802-0236 802-0237 802-0238 802-0239 <br /> T-4-S(15 5) T-4-N(16) T-3-S(15 5) T-3-N(15 5) T-2-N(15) T-2-S(15 5) <br /> Purgeable N D 750 8,200 6,600 4,400 N D <br /> Hydrocarbons Reporting Limit 1 0 20 500 250 250 1 0 <br /> Benzene N D N D N D 46 N D N D <br /> Reporting Limit 00050 010 25 13 13 00050 <br /> Toluene N D N D N D 30 N D N D <br /> Reporting Limit 00050 010 25 13 13 00050 <br /> Ethyl Benzene N D N D 27 86 28 N D <br /> Reporting Limit 00050 010 25 13 13 00050 <br /> 4ktal Xylenes N D 039 400 510 320 N D <br /> Reporting Limit 00050 010 25 13 13 00050 <br /> Chromatogram -- Unidentified Weathered Weathered Weathered -- <br /> Pattern Hydrocarbons Gasoline Gasoline Gasoline <br /> C7-C12 C7-C12 C6-C12 C7-C12 <br /> Quality Control Data <br /> Date Analyzed 02/11/98 02/11/98 02/11/98 02/11/98 02/11/98 02/11/98 <br /> Instrument Identification GCHP-1 GCHP-1 GCHP-2 GCHP-1 GCHP-1 GCHP-2 <br /> Surrogate Recovery, % 88 95 94 98 96 95 <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 /> U01A ANALYTICAL, ELAP #1624 <br /> z"z� <br /> Ronald W Bobel <br /> Project Manager/Sacramento Laboratory <br /> 8020234 EMC <1> <br />