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Gl <br /> � „ l• Z Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 1900 Bates Avenue Suite L Concord CA 94520 (510) 686 9600 FAX(510)686 9689 <br /> NwAnalytical 8 E9 Straker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Brown&Caldwell Client Project ID Arco 1321, Modesto Sampled Mar 2, 1995 <br /> 9616 Micron Ave , Suite 600 Sample Matrix Water Received Mar 3, 1995 <br /> Sacramento, CA 95827 Analysis Method EPA 5030/8015/8020 Reported Mar 20, 1995 <br /> Attention Mindy Patterson First Sample# 503-0259 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sampte Sampie <br /> Analyte Limit I D I D <br /> pg/L 503-0259 503-0260 <br /> Inf Eff <br /> Furgeable <br /> Hydrocarbons 50 N D N D <br /> Benzene 0 50 N D N D <br /> Toluene 050 N D N D <br /> Ethyl Benzene 050 N D N D <br /> • Total Xylenes 050 N D N D <br /> Chromatogram Pattem .. <br /> Quality Control Data <br /> Report Limit Multiplication Factor 10 10 <br /> Date Analyzed 3/13/95 3/13/95 <br /> Instrument Identification GCHP-2 GCHP-2 <br /> Surrogate Recovery, % 98 96 <br /> (OC Limits = 70-130%) <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 /> • �f�///Jf�J{J�J� r �r r <br /> Jennie Higgins <br /> Project Manager <br /> 5030259 6AS <1> <br />