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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX (415) 364 9233 <br /> 4D_ <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (SIO) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 971 9600 FAX (916) 921 0100 <br /> Envlros _ Client Prol ID - Shell 2575 Country Club, STK " Sampled 01/28/97 - <br /> 270 Perkins Ave Sample Descrlpt RW-B1-31 5 Received 01/29/97 <br /> Sonoma, CA 95475 Matrix SOLID Extracted 01/31/97 <br /> Analysis Method 8015Mod/8020 Analyzed 02/03/97 _ <br /> -Attention Joe Neely " Lab Number 9701 G29-04_ " " Reported 02104197 - <br /> QC Batch Number GC013197BTEXEXA <br /> Instrument ID GCHP22 <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 20 N D <br /> Methyl t-Butyl Ether 050 41 <br /> Benzene 0 10 087 <br /> Toluene 010 .. 070 <br /> Ethyl Benzene - 010 014 <br /> Xylenes (Total) 0 10 056 <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trffluorotoluene 70 130 90 <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Gregory <br /> ect Manager Page 4 <br />