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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> IMPOS Services Client Project ID Unocal#2859,1665 Pacific Ave,Stockton Sampled May 4, 1995 <br /> 2401 Stanwell Dr, Ste 300 Matrix Descript Water Received May 4, 1995 <br /> Concord, CA 94520 Analysis Method EPA 5030/8015/8020 Reported May 18, 1995 <br /> Attention Sarkis Karkartan First Sample# 505-0373 <br /> i <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Sample Sample Purgeable Ethyl Total <br /> Number Description Hydrocarbons Benzene Toluene Benzene Xylenes <br /> Mg/L lig/L Ing/L pg/L pg/I- <br /> 505-0373 MW1 120 20 057 1 0 056 <br /> 505-0374 MW2 170,000 20,000 54,000 4,400 23,000 <br /> 505-0375 MW3 1,000 100 13 12 30 <br /> 505-0376 MW4 210 ND 12 11 095 <br /> . 505-0377 MW5 ND 22 ND ND 052 <br /> 505-0378 MW6 2,900 12 77 160 390 <br /> 505-0379 MW7 ND ND 13 063 ND <br /> 505-0380 MW8 70* ND ND ND ND <br /> 505-0381 MW9 78* ND ND ND ND <br /> ' <br /> Hydrocarbons detected did not ear to be gasoline <br /> Y PP <br /> Detection emits 50 0 50 050 050 050 <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,#2000 <br /> 4kignature on File <br /> Alan B Kemp <br /> Project Manager <br /> 5050373 MPD <1> <br /> I <br />