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Sequoia <br />� Analytical <br />settler-Rvan - Dublin <br />.747 Sierra Court. Ste 1 <br />)ublm CA 94568 <br />Batch 0080208 <br />Blank <br />Pert -butyl alcohol <br />Methyl tert-butyl ether <br />Di -isopropyl ether <br />Ethyl tent-butvl ether <br />rert-amyl methvl ether <br />Ethanol <br />Surrogate 11 -DCA -d4 <br />819 Stnker Avenue Suite 8 <br />Sauamento CA 95834 <br />(916) 921-9600 <br />FAX (916) 921-0100 <br />www sequoWabs com <br />Project Chevron 9-5775, Lodi CA sampiea wtomu <br />Project Number 101207 01 Received 8116100 <br />)mtect Manaeer S Polston Reported 8117-18100 <br />Volatile Oxygenate Compounds by EPA Method 8260A/Quality Control <br />Sequoia Analytical - Sacramento <br />Date Spike Sample QC Keporting Limit Kecov Kru Krtl <br />Analvzed Level Result Result Units Recov Limits % Limit % Notes* <br />Date Prepared 8116100 Extraction Method EPA 50306 IP1Tl <br />0080208-B LK I <br />8116100 NO ug/l 200 <br />NO 200 <br />NO " 200 <br />NO 200 <br />ND 200 <br />NO 3000 <br />300 466 600-140 932 <br />LOS <br />0080208 -BSI <br />Methyl tent -butyl ether <br />8116100 500 <br />45 4 <br />ug/1 <br />70 0-130 <br />90 8 <br />Surro are 12 -DCA -d4 <br />500 <br />476 <br />600-140 <br />951 <br />ike <br />0080208 -MSI 5008154-13 <br />Methyl cert -butyl ether <br />8/16/00 500 804 <br />129 <br />ug/I <br />600-140 <br />972 <br />Surrogate 12 -DCA -d4 <br />500 <br />476 <br />,r <br />600-140 <br />952 <br />Mtttrtx Spike Du <br />ip <br />0080208-MSDI 5008154-13 <br />Methyl tert-butyl ether <br />8/16/00 500 804 <br />129 <br />ugll <br />600-140 <br />972 250 0 <br />Surrogate 1,1 -DCA -d4 <br />500 <br />48 0 <br />„ <br />600-140 <br />960 <br />Botch 0080209 <br />Dae Prepared 8116100 <br />Extraction Method EPA 5030B IP/TI <br />Blank <br />0080209-BLKI <br />Tert-butyl alcohol <br />8116100 <br />NO <br />mg1TW Air <br />50.0 <br />Methyl tent -butyl ether <br />or0.568 <br />0.500 <br />4 <br />Di-tsopropyl ether <br />or <br />ND <br />0.500 <br />Ethyl tert-butyl ether <br />NO <br />n <br />0.500 <br />Tert-amyl methyl ether <br />NO <br />0-W <br />Ethanol <br />" <br />ND <br />" <br />3000 <br />Surrogate 12 -DCA -d4 <br />100 <br />9 60 <br />600-140 <br />960 <br />Blank <br />0080209-BLK2 <br />Tert-butyl alcohol <br />8117100 <br />NO <br />mg/e Atr <br />500 <br />Methyl tert-butyl ether <br />NO <br />0 500 <br />Di -isopropyl ether <br />NO <br />0 500 <br />Ethyl tent -butyl ether <br />" <br />NO <br />0 500 <br />Tert-amyl methyl ether <br />NO <br />0 500 <br />Ethanol <br />NO <br />3000 <br />Surra te 12 -DCA -d4 <br />Ia <br />100 <br />980 <br />600-140 <br />980 <br />Sequoia Analyticai - Sacramento *Refer to end of report for text of notes and definitions <br />Page 14 of 16 <br />iii <br />