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' Sequoia 68o Chesapeake Dnvc Redwood City C.A 94063 (413) 304 9600 FAX (413) 364 9233 <br /> 19Co Bats avenue SULta L Concord CA 94320 X310) 630 9600 FkK(5 10) 68o 9699 <br /> Analytical 819 StnkerAvenue Since 8 Sacramento CA 95334 (916) 921 woo FAX(916) 92t 0100 <br /> EA Engineering Science &Tech Client Prol ID 83739421307, EXocon 7-3942 Sarrtpled- 02/17/95 <br /> 3468 Mt Diablo Blvd Ste B100 Sample Descnpt P-1 Received 02/21/95 <br /> Lafayette, CA 94549 Matrix LIQUID = <br /> Analysis Method 8015Mod/8020 Analyzed 02/23/95 <br /> Attention M -Cravink Lab Number 9502C36-13 Reported ?127195 <br /> QC Batch Number-66022295BTEX01 A - � _-µ-w- -- - -- - - =- - - -- - -__--_=-=--=--- - <br /> Instrument ID GCHP01 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br />' Analyte Detection Limit Sample Results <br /> ug/L ug/L. <br /> TPPH as Gas 500 4000 <br /> Benzene 5 0 Bo <br /> Toluene 5 0 5 8 <br /> Ethyl Benzene 5 0 300 <br />' Xylenes (Total) 5 0 180 <br /> Chromatogram Pattern <br /> Non Gas Mix <C8+ <br /> Weathered Gas C8-C12 <br /> 1 <br /> Surrogates Control Limits % % Recovery <br /> tfluorotoluene 70 130 91 <br /> 1 <br /> I <br /> 1 <br /> alytes reported as D were not present above the stated limit of detecton <br /> r <br /> SEQUO ALYTICAL - ELAP #1210 <br /> anne Chan <br /> Project Manager Page 13 <br /> 1 <br />