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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9Z33 <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)921-9600 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) Protect 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-3 <br /> Laboratory Sample Number L904097-03 <br /> Batch Date Date Specific Method/ Reporting <br /> Analyte Number Pre ared Analyzed Surro ate Limits Limit Result Units Notes' <br /> Sequoia Analytical-San Carlos <br /> Total Pur eable Hydrocarbons C6-C12 and BTEX by DHS LUFT <br /> Purgeable Hydrocarbons as Gasoline 9040088 4/19/99 4/19/99 50000 131000 ug/I 1 <br /> Benzene " " 500 16200 " <br /> Toluene 500 18500 " <br /> Ethylbenzene 500 3840 " <br /> Xylenes(total) 500 19800 " <br /> Surrogate a a,a-Trifluorotoluene " " " 600-140 908 % <br /> Volatile Organic Oxygenated Compounds by EPA Method 8260A 4 <br /> Ethanol 9040066 4/13/99 4/14/99 300000 ND ug/1 <br /> Tert-butyl alcohol 20000 ND " <br /> Methyl ten-butyl ether 200 ND " <br /> Di-isopropyl ether 200 ND " <br /> I tert-butyl ether 1. " 200 ND " <br /> amyl methyl ether 200 ND " <br /> Surrogate 12-Drchloroethane-d4 760-114 110 <br /> STq-uoia Analytical-San Carlos 'Refer to end of report for text of notes and definitions <br /> page 4 of 10 <br />