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' 680 Chesapeake Drfve Redwood City CA 94063 650 364-9600 FAX(650) 364-9233 <br /> Sequoia ( ) <br /> 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)98$-9673 <br /> 819 Straker 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 RUSE)-MW2-44 5 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 9901E94-06 Reported 03j24/99 <br /> C Batch Number SP0205998020EXB <br /> Instrument ID HP-5 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br />' Analyte Detection Limit Sample Result <br /> mg/Kg mg/Kg s <br /> TPPH as Gas 1 0 N D <br /> Benzene 00050 N D <br /> Toluene 00050 N D <br /> Ethyl Benzene 00050 N D <br /> Xylenes (Total) <br /> Pattern 0 0050 N D <br /> Surrogates Control Limits% % Recovery <br /> Trtfluorotoluene 70 130 75 <br /> i <br /> I <br /> CnalOMA <br /> ytes reported as N D were not present above the stated limit of detection <br /> ANALYTICAL - ELAP 41271 <br /> I <br /> eroject Manager Page 14 <br />