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Sequoia 680 Chesapeake Dnve 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 Stnker Avenue,Sutte 8 Sacramento,CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> Enviros Client Prol ID Shell 1267 Country Club, Stck Sampled 04/04/97 <br /> 270 Perkins Ave Sample Descript SB-2-11 Received 04/08/97 <br /> Sonoma, CA 95476 Matrix SOLID Extracted 04/11/97 <br /> Analysis Method 8015Mod/8020 Analyzed 04/12/97 <br /> Attention Joe Neely Lab Number 9704512-05 Reported 04122/97 <br />)C Batch Number GC041197BTEXEXA <br /> istrument ID GCHP01 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> TPPH as Gas 10 86 <br /> Methyl t-Butyl Ether 0 025 N D <br /> Benzene 00050 0 022 <br /> Toluene 00050 0 026 <br /> Ethyl Benzene 00050 0 080 <br /> Xylenes (Total) 00050 039 <br /> Chromatogram Pattern C6-C12 <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 126 <br /> 4-Bromofluorobenzene 60 140 94 <br />�naiytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Dro)ect Manager Page 13 <br />