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a i Sequoia 680 Chesapeake Drive Redwood Ctv CA 94063 (4151 364 %00 FAX(415) 364 9233 <br /> 1900 Bates Avenue Suite L Concord CA 94520 (510) 686 %00 FAX(510)686 9689 <br /> 819 Straker Avenue Suite 8 Sacramento CA 95834 i 916) 921 9600 FAX(916)921 0100 <br /> Analytical <br /> Brown & Caldwell Client Project I Arco 2133, Stockton Sampled Mar 8, 1995 <br /> 9616 Micron Ave , Suite 600 Sample Matrix Water Received Mar 8, 1995 <br /> Sacramento, CA 95827 Analysis Method EPA 5030/8020 Reported Mar 22, 1995 <br /> Attention Mindy Patterson First Sample# 503-0457 <br /> BTEX DISTINCTION <br /> Reporting Sample <br /> Analyte Limrt I D. <br /> pg/L 503-0457 <br /> Tank <br /> Benzene 050 so <br /> Toluene 050 N D <br /> Ethyl Benzene 050 N D <br /> Total Xylenes 050 12 <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 <br /> Date Analyzed 3/13/95 <br /> Instrument Identification GCHP-2 <br /> Surrogate Recovery, % <br /> (QC Limits = 70-130%) <br /> z <br /> Analytes reported as N D were not detected at or above the reporting limit <br /> SEQUOIA ANALYTICAL Please Note <br /> FLAP#1624 *Matrix interference <br /> JQe :H iggins <br /> Project Manager <br /> 5030457 ORS .41 <br />