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Sequoia 680 Chesapeake Drive Redwood City;CA 94063 (415) 364-9600 FAX(415) 364-9233 <br /> 404 N.Wigt Lane Walnut Creek,CA 94598 (510) 988-9600 FAX(510)988-9673 <br /> 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921-0100 <br /> Analytica <br /> PDS'Services 0" nt Project T 03 E. 1 1th �k� "8a :'. <br /> OSCO#0788, 82 mpled: May 6, 1997 <br /> 2401 Stanwell Dr., Ste. 300 Matrix Descript: Water Received: May 6, 1997; <br /> Concord, CA 94520 . <br /> Analysis Method: EPA 5030/8015 Mod./8020 Reported: May 23, 1997:- <br /> N <br /> Attention: Jarrel Crider First Sample#: 705-0462 <br /> .. .. ... ........... <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Sample Sample Purgeable Ethyl Total <br /> Number Description Hydrocarbons Benzene Toluene Benzene Xylenes <br /> pg/L pg/L pg/L pg/L Mg/L <br /> 705-0462 u 1 ND ND ND ND ND <br /> 705-0463 U 2 ND ND ND ND ND <br /> 705-0464 U 3 ND ND ND ND ND <br /> 705-0465 U 4 ND ND ND ND ND <br /> • 705-0466 U 5 ND 0.65 ND ND ND <br /> 705-0467 U 6 ND ND ND ND ND <br /> 705-0468 U 7 ND ND ND ND ND <br /> 705-0469 U 8 ND ND ND ND ND <br /> 705-0470 u 9 ND ND ND ND ND <br /> 705-0471 U10 ND ND ND ND ND <br /> Detection Limits: 50 0.50 0.50 0.50 0.50 <br /> Total Furgeable 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 /> nature on File <br /> Alan B. Kemp <br /> Project Manager Page 1 of 2 <br /> 7050462.MPD <I> <br />