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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364-9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510) 988 9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> _ Enviros Client Prol ID Shell 2575 Country Club, STK Sampled 01/28/97 <br /> 270 Perkins Ave Sample Descript SS-2D Received 01/29/97 <br /> Sonoma, CA 95476 Matrix SOLID Extracted 02/03/97 <br /> Analysis Method 8015Mod/8020 Analyzed 02/04/97 <br /> Attention Joe Neely Lab Number 9701631-04 _ _ Reported 02J05197 <br /> dC Batch Number GCO20397BTEXEXA µ <br /> Instrument ID GCHP07 <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 Limits % % Recovery <br /> Tnfluorotoluene 70 130 106 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> 2 4 -e-- <br /> OGregory <br /> c't Manager Page 5 <br />