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' Sequoia 680 Chesapeake Dnve Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> q 404 N Wiget Lane Walnut Creek CA 94598 (510) 988-9600 FAX(S 10) 988 9673 <br /> 6 14%0 Analytical 819 Straker Avenue Suite 8 Sacramento CA 95834 {916} 921 9500 FAx(916) 921-0100 <br /> -- <br /> EA Engineering Science &Tech _ Client Prol ID Exxon 7-3942/51539421307 Sampled 04/18/98 <br /> 3468 Mt Diablo Blvd Ste B100 Sample Descript RW1 Received 04/19/96 - <br /> Lafayette, CA 94549 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 04/24/96 <br /> ttention Marla G_uenslerLab Number9604E22-19 _ _ Reported 05/10/96 <br /> »,-yy„�-- �:.1...:.-� i.........ii.i•....� .....»..�...:i» rt_-.1»i.....d^•"'"'� — »ii....K....�[--J+.......-,� <br /> L-:,.C- Batch Number GC042496BTEX20A -j_s•-• _--��� <br /> Instrument ID GCHP20 <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 ... 2000 23000 <br /> Methyl t-Butyl Ether 100 N D <br /> Benzene -- .. 20 .. 510 <br /> Toluene 20 2500 <br />' Ethyl Benzene .. - -- -- 20 980 <br /> Xylenes (Total) 20 2700 <br /> Chromatogram Pattern* ... .. Gas <br />' Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 101 <br /> 1 <br /> alytes reported as N 0 were not present above the stated limit of detection <br /> O! ALYTICAL - ELAP #1210 <br /> Follett <br /> rolect Manager Page 20 <br />