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o <br /> 1 680 C -ake Drive Redwood City CA 94063(650)364-9600 FAX(650) 364-9233 <br /> Sequoia 404 N Wlget 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-t865 FAX(707)792-0342 <br /> ATC Associates, Inc _ -- -Client Pro' <br /> rty ID -� Bozzano PropeSampled <br /> i 1260 Graphics Drive Sample Descript Method Blank Received 06/19/98 <br /> „ Modesto, CA 95351-1502 Matrix SOLID Extracted 06/25/98 <br /> ' Analysis Method 8015Mod/8020 Analyzed 06/25/98 <br /> Attention Tom Lutterman Lab Number 9806E06-18 Reported 07J30J98 <br /> - <br /> QC Batch Number GC062598BTEXEXA <br /> Instrument ID GCHP01 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> TPPH as Gas 10 N D <br /> Benzene 00050 N D <br /> Toluene 00050 N D <br /> Ethyl Benzene 00050 N D <br /> Xylenes (Total) 00050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limas% % Recovery <br /> Tri luorotoluene 70 130 88 <br /> 4-Bromofluorobenzene 60 140 89 <br /> i <br /> Analytes reported as IN D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 41210 <br /> Pro'ec Manager Page 43 <br />