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Sequoia _ 580 Chesapeake L Drive Redwood Gry,CA 4598 (650) 364 9600 FAX(650)364 %73 <br /> 404 N Wiget lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988 9573 <br /> � Analytical 8l9 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Blaine Tech Services »» Client Proj ID~ Shell_Stockton/971009-132 Sampled«10/10/97» U <br /> z 1680 Rogers Avenue Sample Descript MW-7 Received 10/10/97 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis-Method -8015Mod/8020" Analyzed -10/14/97—;ii <br /> - Attention Fran Thie » _ « Lab Number _9710596-07 _ _ « _ R_eported 10116197 « <br /> « ri <br /> QC Batch Number GC101497BTEX17A <br /> Instrument ID GCHP17 <br /> Total Purgeable Petroleum Hydrocarbons(TPPH)-with-BTEX-and-MTBE - <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas .- - 250 -- - .-- - - -- 3000 <br /> Methyl t-Butyl Ether .. .- -. 25 - - •• •• -- - 19 <br /> Benzene - -- -- 25 - - -- -- - 280 <br /> Toluene .. ... ... .. 2.5 .. .. 26 <br /> Ethyl Benzene 25 N D <br /> Xylenes (Total) .. .. ... 25 --- - -... 130 <br /> Chromatogram Pattern. .. .... ... .. . .. C6-C12 <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 99 <br /> i <br /> P <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUVAL [CAL - ELAP #1210 <br /> Peggy Penner ~ <br /> Protect Manaaer Page 21 <br />