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Sequoia 680 Chesapeake Drive Redwood Cary,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 /> fall>�► Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX (916)921 0100 <br />" Envlros Client Proj ID Shell 2575 Country Club, STK Sampled 61/28/97 <br /> 270 Perkins Ave Sample Descrlpt RW-B1-11 Received 01/29/97 <br /> Sonoma, CA 95476 Matrix SOLID Extracted 01/31/97 <br />- Analysis Method 8015Mod/8020 Analyzed 02/03/97 <br />-Attention Joe Neely - _ _ _ _ Lata Number 9701G29-03 _ _ _ Reported 02J04J97 <br /> 6C 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 m9/Kg <br /> TPPH as Gas - - 20 -- -- - - 82 <br /> Methyl t-Butyl Ether 050 ... 31 <br /> Benzene - - 010 -- •- - - 1 6 <br /> Toluene - 010 3.9 <br /> Ethyl Benzene 010 - - 1.6 <br /> Xylenes (Total) 010 ... 8 0 <br /> Chromatogram Pattern C6-C12 <br /> Surrogates Control Limits % % Recovery <br /> Trlfluorotoluene 70 130 115 <br />• <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANAL ICAL - ELAP #1210 <br /> regory <br /> PIG <br /> ct Manager Page 3 <br />