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Sequoia680 Chesapeake Dnve Redwood City,CA 94063 (650) 364 9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988-9600 FAX(510)988 8673 <br /> Analytical 819 Stnker Avenue,Suite a Sacramento,CA 95834 (916) 921-9600 FAX(916)921-0100 <br /> t <br /> ii Envlros Client�Prol ID Shell»Stockton Sampled 09/18/97 ;; <br /> --- ; 270 Perkins Ave Sample Descnpt SS-1 D Received 09/19/97 ; <br /> Sonoma, CA 95476 Matrix SOLID Extracted 09/23/97 <br /> Analysis Method 8015Mod/8020 Analyzed 09/26/97 <br /> ' Attention J Gaarder _ _ Lab Number 9709C12-04 Reported 09 <br /> _ J26f97 <br /> OC Batch Number-GCO92397BTEXEXC - « <br /> Instrument ID GCHP22 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte _ Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> TPPH as Gas .. .. 10 .. 1.1 <br /> Benzene .. 00050 .. ... 015 <br /> Toluene .. 00050 .. .. .. 016 <br /> Ethyl Benzene .. 00050 _ 0.-017 <br /> Xylenes (Total) .. .. 0.0050 ... 0.062 <br /> Chromatogram Pattern .. .. . . C6-C12 <br /> Surrogates Control Limas % % Recovery <br /> Trifluorotoluene 70 130 99 <br /> 4-Bromofluorobenzene 60 140 86 <br /> • <br /> K <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 01210 <br /> M e 06 r Zory - - <br /> Project Manager Page <br />