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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 /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-OtOO <br /> iWp 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Cambria -Client Prol 1D - _ Shell 420 West Kettleman Lane - Sampled 03/23/99 <br /> 270 Perkins Ave Sample Descript SP-7 Received 03/23/99 <br /> Sonoma, CA 95476 Matrix SOLID Extracted 03/24/99 <br /> - Analysis Method EPA 8015 Mod Analyzed 03/24/99 <br /> Attention Mike Murphy_ _Lab Number- 9903A47-07 x„µ Reported 03J26f99 <br /> QC Batch Number GC032499BTEXEXA <br /> Instrument ID GCHP18 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> TPPH as Gas 1 4 1 1 <br /> Chromatogram Pattern C6-C12 <br /> Weathered Gas <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 92 <br /> 4-Bromofluorobenzene 60 140 78 <br /> • <br /> Analytes reported as N€7 were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 41210 <br /> Project M ager Page 9 <br />