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' 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> Sequoia 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 Client Prol ID Ripon Unified School Sampled 01/27/99 <br /> 1117 Lone Palm Avenue Sample Descript RUSD-MW2-30 Received 01/29/99 <br /> Modesto, CA 95351-1502 Matrix SOLID <br /> Analysis Method 8015Mod/8020 Analyzed 02/05/99 <br /> Attention Drew Van Alien Lab Number 9901 E94-05 Reported 03f24199 <br /> C Batch Number SP0205998020EXB <br /> Instrument 1D 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 so 66 <br /> Benzene 025 N D <br /> Toluene 025 N D <br /> F <br /> hyl Benzene 026 N D <br /> lenes (Total) 025 2 5 <br /> Ethyl <br /> Pattern <br /> Weathered Gas >C8 <br />'Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 Q <br /> 1 <br /> CalOMytes reported as N D were not present above the stated limit of detection <br /> A <br /> ANALYTICAL - ELAP #1271 <br /> 1 <br />`rolect Manager Page 12 <br />