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ti) Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> qwr Analytical 819 Striker Avenue,Suite a Sacramento, CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> %P0S Services Client Project ID Unocal#5098,5606 Pacific Avenue,Stockton Sampled Feb 8, 1995 <br /> 2401 Stanwell Dr, Ste 300 Matrix Descript Water Received Feb 8, 1995 <br /> Concord, CA 94520 Analysis Method EPA 5030/8015/8020 Reported Feb 24, 1995 <br /> Attention Sarkis Karkarlan First Sample# 502-0647 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Sample Sample Purgeable Ethyl Total <br /> Number Description Hydrocarbons Benzene Toluene Benzene Xylenes <br /> fig/L Ng/L Mg/L Ing/L Mg/L <br /> 502-0647 MW10 82 12 ND ND ND <br /> 502-0648 MW11 96,000 11,000 19,000 1,800 10,000 <br /> 502-0649 MW12 22,000 550 700 280 1,400 / <br /> 502-0650 MW13 ND ND ND ND ND <br /> Ob502-0651 MW14 ND ND ND ND ND <br /> 502-0652 MW15 ND ND ND ND ND <br /> Detection Limits* so 050 050 050 0.50 <br /> Total Purgeable Petroleum Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as ND were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL, #1271 Please Note <br /> *Revised Report,5/11/95 <br /> gnature on Fife <br /> Alan B Kemp <br /> Project Manager <br /> 5020647 MPD <1> <br />