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r y 4 <br /> 404 N WISet Lane <br /> Walnut Creek reels 94598 <br /> 98 <br /> (925)988-9BOQ <br /> 1 4 fAX(9ZS)988-9673 <br /> lcDo Analytical www sequoWabscorr, <br /> Gettler Ryan,Inc -Dublin Project Chevron <br /> 6747 Sierra Court Suite J Project Number Chevron#9-9840 ' Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 10-Jul-0017 52 <br /> Volatile Organic Compounds by EPA Method 8260A - Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Lurnt Units Level Result %REC Luts RPD Lutist Notes <br /> m <br /> Batch 0GO1003 -EPA 5030B [PIT] -- <br /> Blank(OG01003-BLK1) Prepared&Analyzed 01-Jul-00 <br /> Ethanol ND 500 ug/1 <br /> tort-Butyl alcohol ND 100 " <br /> Methyl tert-butyl ether ND 20 " <br /> Di-isopropyl ether ND 20 <br /> Ethyl tert-butyl ether ND 20 " <br /> tent-Amyl methyt ether ND 20 " <br /> Surrogate Dubromofluoromethane 500 Soo 100 50.150 <br /> Surrogate 1 2-Dichloroethane-d4 440 500 880 50-150 <br /> Blank(OG01003-BLK2) Prepared&Analyzed 02-Jul-00 <br /> Ethanol ND, 500 ug/I _ <br /> tert-Butyl alcohol ND 100 _ u <br /> Methyl tort-butyl ether ND 20 " <br />- - <br /> Di-isopropyl ether ND 20 „ _.�.. w - - -- _..�_- - - ---- - ----•-- <br /> Ethyl tart-butyl ether ND 20 " <br /> tent-Amyl methyl ether ND 20 " <br />=Surrogate Dibromofluoromethane 49 0_ _ -500 980 50-150 -_- <br /> Surrogate 1,2 Dichloroethane-d4 440 Soo 880 50-150 <br /> Blank.(0601003-BLK3) �J -T - —T —Prepared&-Analyzed 03-Jul-00 - <br /> EthaaolND 500 ug/1 <br /> tort-Buty1alcoho! -�-�-� UID l00��" - <br /> Methyl tart-butyl ether ND 20 " <br /> D:-isopropyl ether ND 20 " <br /> Ethyl tent-butyl ether ND 20 " <br /> tent Amyl methyl ether ND 20 " <br /> Surrogate Dibromofluoromethane Soo Soo 100 50-150 <br /> Surrogate 1,2 Dichloroethane-d4 470 '- SO 0 940 50-150 - <br /> Sequoia Analytical-Walnut Creek The results in this report apply w the samples analyzed in accordance with the chain of <br /> custody document.Thus analytical report must be reproduced in its entire <br /> Page 7 of 11 <br />