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Sequoia 6130 Chesapeake Drive Redwood City,CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 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 /> 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 /> :s::::::::¢MMM:::::::::::::s::::::::::::::::::a::::s=::::::::::::s::::a:att:aatsa:a::::s:< <br /> :..:.:::...................... .. ......................................... ......... ..:..... .:... .................... -----...............---........................---..... .................... ........ .................... <br /> ATC Associates, Inc. Client Pro1. ID: SUSD/Sta99 High School Sampled: 02/25/99 <br /> 1117 Lone Palm Avenue Sample Descript: SUSD/SH-MW1-23.5 Received: 02/26/99 <br /> Modesto, CA 95351-1502 Matrix: SOLID Extracted: 03/05/99 <br /> Analysis Method: 8015Mod/8020 Analyzed: 03/09/99 <br /> Attention: Tom Lutterman Lab Number: 9903068-03 Re orted: 03 23 99 <br /> C Batch Number: GC030599BTEXEXA <br /> Instrument ID: GCHP31 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> i <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> rTPPH as Gas .................... 1.0 .................... 2.5 <br /> Benzene 0.0050 N.D. <br /> Toluene 0.0050 N.D. <br />'Ethyl Benzene 0.0050 0.0074 <br /> Xylenes (Total) .................... 0.0050 ................ 0.045 <br /> Chromatogram Pattern: <br /> Unidentified HC .................... .................... C6-C12 <br />'Surrogates Control Limits% % Reeove <br /> Trifluorotoluene 70 330 99 <br /> 4-Bromofluorobenzene 60 140 91 <br /> alytes reported as N.D.were not present above the stated limit of detection. <br /> EQUOIA ANALYTICAL - ELAP #1210 <br />�roject Manager Page: 6 <br />