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' 680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650) 364-9233 <br /> Sequoia 404 N Wlget 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 /> �01>� 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 Client Prol ID Ripon Unified School Sampled 01/27/99 <br /> 1117 Lone Palm Avenue Sample Descript RUSD-MW2-25 Received 01/29/99 <br /> Modesto, CA 95351-1502 Matrix SOLID <br /> Analysis Method 8015Mod/8020 Analyzed 02/05/99 <br /> Attention Drew Van Allen Lab Number 9901 E94-04 Reported 03j24j99 <br /> 4C Batch Number SP0205998020EXB <br /> strument ID HP-5 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br />'TPPH as Gas 50 470 <br /> Benzene 025 N D <br /> Toluene 025 N D <br />,Ethyl Benzene 025 1 3 <br /> Xylenes (Total) 025 12 <br /> Chromatogram Pati ern <br /> Weathered Gas >C8 <br /> iSurrogates Control Limits % 1% Recovery <br /> Trifluorotoluene 70 130 Q <br /> I <br />(alytes reported as N D were not present above the stated limit of detection <br /> EQU011AANAMICAL - ELAP #1271 <br /> 1 <br />�rolect Manager Page 10 <br />