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(D—Sequoia 680 Chesapeake Dove Rcdw.d Cit, CA 44063 1415) 364 4600 FAX (415) 364 9234 <br />1900 Bates Avenue Suite L Concord CA Q4520 (510) 686 9600 FAX (510 686 4689qCAnalytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 96W FAX t916) 921 0100 <br />groundwater Technology Client Project ID Chevron #9-2033, Stockton, CA Sampled Y Mar' 16, 1995} <br />1401 Halyard Dnve, Suite 140 Sample Matrix Sall Received Mar 22, 1995: <br />West Sacramento, CA 955691 Analysis Method EPA 5030/8015/8020 Reported Apr 4, 1995 <br />Attention Jason Fedota First Sample # 503-1095 a <br />TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br />Reporting Sample Sample Sample Sample Sample Sample <br />Analyte Limit L.D. I D. I.D. 1.1) I.D. I.D. <br />mg/kg 503-1095 503-1096 503-1097 503-1098 503-1103 503-1104 <br />MW-3-20 MW-3-25 MW-3-30 Mw-3-35 S13-1-10 sB-1-15 <br />Furgeable <br />Hydrocarbons 10 N D 38 N D 250 N D N D <br />Benzene 00050 N D N D 0 012 10 N D N D <br />Toluene 00050 N D N D N D 46 N D N D <br />Ethyl Benzene 00050 N D N D N D 11 N D N D <br />Total Xylenes 00050 N D 0 011 N D 83 N D N D <br />Chromatogram Pattern - - Unidentified - - Gasoline - - -- <br />Hydrocarbons C6-C12 <br />> C7 <br />uuainy Lontroi rata <br />Report Limft Multiplication Factor <br />10 <br />10 10 50 1 0 <br />10 <br />Date Analyzed <br />3/29/95 <br />3/29/95 3/29/95 3/29/95 3/30/95 <br />3/30/95 <br />Instrument Identification <br />GCHP-1 <br />GCHP-1 GCHP-1 GCHP-1 GCHP-1 <br />GCHP-1 <br />Surrogate Recovery, °% <br />92 <br />84 84 99 86 <br />81 <br />(OC Umrts = 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, ELAP/#1624 <br />Linda C Schneider <br />Project Manager <br />5031072 GRW <3> <br />