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1 680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 45) Sequoia 404 N Wiget Lane Walnut Creels CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 4Il) <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707) 79Z-1865 FAX(707)792-034Z <br /> 1551 industrial Road San Carlos, CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> 1 <br /> ATC Associates, Inc Client Prod ID Ripon Unified School Sampled 01/27/99 <br /> 1117 Lone Palm Avenue Sample Descript RUSD-MW2-19 Received 01/29/99 <br /> Modesto, CA 95351-1502 Matrix SOLID <br /> Analysis Method 8015Mod/8020 Analyzed 02/05/99 <br /> tAttention Drew Van Allen Lab Number 9901 E94-03 Reported 03f24199 <br /> C Batch Number SP0205998020EXB <br /> Instrument 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 20 210 <br /> Benzene 010 N D <br /> Toluene 010 N D <br /> Ethyl Benzene 010 N D <br /> Xylenes (Total) 0 10 061 <br /> Chromatogram Pattern <br /> Weathered Gas >C8 <br />' Surrogates Conlrol Limits% % Recovery <br /> Trifluorotoluene 70 130 104 <br /> 1 <br /> alytes reported as N D were not present above the stated limit of detection <br /> EQUOIA ANALYTICAL - ELAP #1271 <br /> f <br />�rolect Manager Page 7 <br /> 1 <br />