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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 /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> POS Services 0 Client Project lb Unocal#6981,4707 Pacific Ave,Stockton Sampled Jul 25-26, 1994 <br /> 2401 Stanwell Dr, Ste 400 Matrix Descrlpt Water Received JUI 26, 1994 <br /> Concord, CA 94520 Analysis Method EPA 5030/8015/8020 Reported Aug 10, 1994 <br /> Attention Avo Avedesslan First Sample# 407-1480 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Sample Sample Purgeable Ethyl Total <br /> Number Description Hydrocarbons Benzene Toluene Benzene Xylenes <br /> lrg/L Mg/L ,ug/L ug/L Mg/L <br /> 407-1480 MWi ND ND ND ND ND <br /> 407-1481 MW4 850 74 24 ND 61 <br /> 407-1482 MW6 88* 18 ND ND ND <br /> 407-1483 MW7 9,300 3,300 54 420 120 <br /> 407-1484 MW8 170 ND 082 ND 1 7 <br /> 407-1485 MW9 ND ND ND ND ND <br /> 407-1486 MW10 ND ND ND ND ND <br /> 407-1487 MW11 ND ND 057 ND 12 <br /> 407-1488 MW12 ND ND 052 ND 097 <br /> 407-1489 MW13 ND ND ND ND ND <br /> Hydrocarbons detected did not appear to be gasoline <br /> Detection Limits so 050 050 050 0 S= <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 <br /> Oignature on File <br /> Alan B Kemp <br /> Project Manager <br /> 4071480 MPD <1> <br />