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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364-9233 <br /> 1a) 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)921-0 100 <br /> Erlvtros - '- -- - m - Client Prof �IDJ-µ Shell 6131 Pacific, Stockton Sampled 07/02/97 1= <br />"F,' 270 Perkins Ave Sample Descript SB-4-31 5 Received 07/03/97 <br /> Sonoma, CA 95476 Matrix SOLID Extracted 07/11/97 IL <br /> Analysis Method 8015Mod/8020 Analyzed 07/12/97 c <br /> Attention Joe Neely....... „ _ Lab Number -9707310-09 _ - _ _ _ Reported-07f18197 <br /> QC Batch Number GC071197BTEXEXA- <br /> Instrument ID GCHP18 <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 •-- -- .. .. 5.0 .... .... . . 46 <br /> Methyl t-Butyl Ether 012 N D <br /> Benzene .. .. ....... 0.025 . .. ... ... -- 0.068 <br /> Toluene .. . .. ......... . 0 025 .. ... 072 <br /> Ethyl Benzene .. .... ............ 0 025 .. .. 0 47 <br /> Xylenes (Total) .. .... ............ 0 025 ... ... 2 8 <br /> Chromatogram Pattern: . ... ... .. .... .. ... C6-C12 <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 81 <br /> 4-Bromofluorobenzene 60 140 1700 <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> f. <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> I <br /> Gregory <br /> P?Wct Manager Page 9 <br />