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Sequoia 680 Chesapeake Drive Redwood City, CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> tx� <br /> 1W Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> WDS Services Client Pro <br /> 2401 Stanwell s , Ste 300 lect ID Unocal#0187,437 E Miner Ave, Stockton Sampled Nov 3, 1997 <br /> Matrix Descript Water Received Nov 3, 1997 <br /> Concord, CA 94520 Analysis Method EPA Mod 801 <br /> 5030 5 8020 <br /> / / Reported Nov 18, 1997 <br /> Attention Jarrel Crider <br /> First Sample# 711-0119 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Sample Sample Purgeable Ethyl Total <br /> Number Description Hydrocarbons Benzene Toluene Benzene Xylenes <br /> Ing/L ug/L Ing/L Ng/L Mg/L <br /> 711-0119 U 1 160 42 ND <br /> ND 13 <br /> 711-0120 U2 ND ND ND ND ND <br /> 711-0121 U3 25,000 960 580 1,500 5,100 <br /> 711-0122 U4 60* ND ND ND <br /> ND <br /> 711-0123 U5 ND ND ND <br /> ND ND <br /> 711-0124 U6 ND ND ND ND ND <br /> 711-0125 U7 ND ND ND ND ND <br /> 711-0126 U8 ND ND ND ND ND <br /> 711-0127 U9 ND 16 ND ND <br /> ND <br /> *Hydrocarbons detected did not appear to contain gasoline <br /> etection units 50 050 0 50 0 50 <br /> 0 50 <br /> Total Purgeabie 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 /> &ature on File <br /> Alan B Kemp <br /> Project Manager <br /> Pagel of 2 <br /> 7110119 MPD <1> <br />