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404 N Wiget lane <br /> Seq ■Oi r� Walnut Creek CA 94598 <br /> u {•� (925)988-96M <br /> FAX(925)988-9673 <br /> AnalyticalWww secluoialabs corn <br /> Gettler Ryan, Inc -Dublin Project Chevron <br /> 6747 Sierra Court Suite I Project Number Chevron 4 9-8264 Reported <br /> Dublin CA 94568 Project Manager Deanna L Harding 06-Aug-01 09 54 <br /> Volatile Organic Compounds by EPA Method 8010B - Quality Control <br /> Sequoia Analytical - Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result L-unit—Units Levcl—Result—%REC—Limrts—RPD—Limit—Notes— <br /> Batch IG25008- EPA 5030B 1P/TJ _ <br /> LCS(IG25008-BSI) Prepared&Analyzed 25-Jul-01 <br /> i,l-Dichlo-wcthene 155 1 0 ug/l 200 775 65-135 <br /> Trichloroethene- - -174 - 1 1 1 - 200 - 870 -70-130 - - -- <br /> Chlorobenzene 16 5 l 0 200 82 5 70-130 <br /> Surrogate Dibromodrfluorornethane l0 6 _T Y11 ___ IO 0 �_ !06 50-150 _ <br /> Surrogate 4-Bromof7uorobenzene 867 100 86 7 50-150 <br /> LCS(IG25008-BS3) Prepared& Analyzed 27-Jul-01 <br /> 164 --- --T-3 0 ug/l 200�T T 82 0 65-135 <br /> Trichloroethene 193 1 1 200 965 70-130 <br /> Chlorobenzene 19 1 1 0 200 95 5 70-130 <br /> Surrogate Drbromod+i luoromethane 105 100 105 50-150— <br /> Surrogate 1-Chloro-1fluorobenzene 118 100 118 50-150 <br /> Surrogate 4-Bromofluorobenzene 9 78 100 978 50-150 . <br /> Matrix Spike(I G25008-MSI) Source W107288-03 Prepared&Analyzed 25-Jul-01 _- <br /> 1,1-Dichlaroethenel8 4 1 0 ug/l 200 ND 920 60-140 <br /> Trichloroethene 21 0 1 1 200 ND 105 60-140 <br /> Chlorobenzene 21 2 10 200 ND 106 60-140 <br /> Surrogate D+bromodifluoromethane 11 7 100 117 50-150 <br /> Surrogate 4-Bromofluorobenzene—------___l0 1_— __ " _ —10 0--=_—101_.-____507150 _ _ ___ <br /> -- <br /> Matrix Spike Dup(IG25008-_M_SDI_) Source W107288-03 Prepared_&Analyzed 25-Jul-01 <br /> I,l-Dichloroethene F8-3 i�0 u911 200 ND 91 5 60-140 0 545 25 <br /> Trichloroethene 21 1 11 200 ND 106 60-140 0475 25 <br /> Chlorobenzene 20 8 1 0 20 0 ND 10460-140______1 90 25 <br /> Surrogate D+bromodruoromethane 110 -10-0---- 110 50-150 <br /> Surrogate 4-Bromofluorobenzene 886 100 886 50-150 <br /> Sequoia Analytical- Walnut Creek The results to this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced in its entire <br /> Page 18 of 24 <br /> r� <br />