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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 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)92t 9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707) 792-1865 FAX(707)792-0342 <br /> • 1551 Industrial Road San Carlos, CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> ATC Associates,Inc(1) Project ATC Projects Sampled 4/7/99 <br /> 1117 Lone Palm Ave,Suite B Project Number Pacific Coast Recreation 16393 0001 Received 4/8/99 <br /> Modesto,CA 95351 Project Manager Drew Van Allen Reported 4/23/99 <br /> Sample Description: MW-2 <br /> Laboratory Sample Number L904097-02 <br /> Batch Date Date Specific Method/ Reporting <br /> Analyte Number Prepared Analyzed Surrogate Limits Limit Result Units Notes* <br /> Sequoia Analytical-San Carlos <br /> Total Puraeable Hydrocarbons(C6-C12)and BTEX by DHS LUFT <br /> Purgeable Hydrocarbons as Gasoline 9040084 4/16/99 4/16/99 50000 272000 ug/l 1 <br /> Benzene to 500 38700 it <br /> Toluene to 500 53700 it <br /> Ethylbenzene " " " 500 4040 " <br /> Xylenes(total) 500 22600 to <br /> Surrogate a a a-Trrfluorotoluene 600-140 78 7 <br /> Volatile Or anic Oxygenated Compounds by EPA Method 8260A 3 <br /> Ethanol 9040066 4/13/99 4/14/99 100000 ND ug/l <br /> Tert-butyl alcohol toto 6670 ND " <br /> Methyl tent-butyl ether " " " 667 ND to <br /> Di-isopropyl ether " " " 667 ND to <br /> ltent-butyl ether 667 ND " <br /> amyl methyl ether 667 ND " <br /> surrogate 1,2-Dichloroethane-d4 If IF IF760-114 952 <br /> uoia Analytical-San Carlos *Refer to end of report for text of notes and definitions <br /> Page 3 of 10 <br />