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Sequoia 680 Apeake Drive Redwood City CA 940630(650) 364-9600 FAX(650)364-9233 <br /> '" 404 N W.Set Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <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)792-1865 FAX(707)792-0342 <br /> ATC Associates, Inc - - Client Proj ID Bozzano Property - Sampled 06/18/98 <br /> 1260 Graphics Drive Sample Descrlpt BP-SBI-W Received 06/19/98 <br /> Modesto, CA 95351-1502 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 06/25/98 <br /> i-Attention Tom Lutterman Lab Number 9806E06-15 „ Reported 07/30/98 , <br /> QC Batch Number GC062598BTEX17A <br /> Instrument ID GCHP17 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 250 2500 <br /> Benzene 2 5 7 6 <br /> Toluene 2 5 110 <br /> Ethyl Benzene 2 5 45 <br /> Xylenes (Total) 2 5 340 <br /> Chromatogram Pattern GAS <br /> Surrogates Control Limits% % Recovery <br /> Tri luorotoluene 70 130 92 <br /> i <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> r <br /> Project anager Page 34 <br />