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Sequoia 680 Chesapeake Drive Rcdwood City,CA 94063 (650) 364-9600 FAX(650)364 9233 <br /> 404 N Wiget lane Wainut Creek,CA 94598 (510) 988-9600 FAX(510)988 9673 <br /> Analytical 815 Straker Avenue,Suite a Sacramento,CA 95834 (9 16) 921 9600 FAX(916)921 0100 <br /> Cambria Client Prol ID Shell 2525 Country,Stockton - -Sampled 10/27/97 L' <br /> T 270 Perkins Ave Sample Descrlpt RW-1A Start Received 11/03/97 <br /> E, Sonoma, CA 95476 Matrix LIQUID <br /> W Analysis Method 8015Mod/8020 Analyzed 11/11D/97 E <br />-i-Attention Joe Neely _ _— _ Lab Number=971.1=157.01 _ - Reported_111-14197 <br /> QC Batch Number GC111097BTEX2IA <br /> Instrument 1D GCHP21 <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 .... ..... 50000 .... ....... .. .. . 120000 <br /> Methyl It-Butyl Ether . .... 2500 .... ..... ... . . 310000 <br /> Benzene ...... ....... . 500 .-- --.. .. .. .. 11000 <br /> Toluene •- ---• - - - ... 500 . ...... ... .. .. 18000 <br /> Ethyl Benzene - -.• -- - •- 500 .. ... .. 2300 <br /> Xylenes (Total) . .... .. .... . 500 ..... ..... ... . . 13000 <br /> Chromatogram Pattern: ...... ... .. ... - - -• •• --- - C6-C12 <br /> Surrogates Control Limits % % Recovery <br /> Trlfluorotoluene 70 130 104 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Z//Z/� 0 <br /> M1 k e 6r'4ry <br /> Project Manager Page 1 <br /> m <br />