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404 N.Wiget Lane <br /> ,!D <br /> } Sequoia Walnut Creek, 94598 <br /> -9600 <br /> (925)98 98 8-9600 <br /> � Analytical wFAX{925}988-9673 <br /> ww.sequolalabs.com <br /> Gettler Ryan,Inc.-Dublin Project: Chevron <br /> 6747 Sierra Court Suite J Project Number: Chevron#9-8264 Reported: <br /> Dublin CA,94568 Project Manager. Deanna L.Harding l5-Jun-0011:50 <br /> Volatile Organic Compounds by EPA Method 8010B- Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch OE30010-EPA 5030B [PIT] <br /> LCS(OE30010-BSI) Prepared&Analyzed: 30-May-00 <br /> IJ-Dichloroethene 19.0 1.0 ug/I 20.0 95.0 65-135 <br /> Trichloroethene 20.0 1.0 20.0 100 70-130 <br /> Chlorobenzene 20.0 1.0 20.0 100 70-130 <br /> Surrogate:Dibromodiuoromethane 9.30 10.0 93.0 50.150 <br /> Surrogate:4 Bromofluorobenzene 11.0 10.0 110 50-150 <br /> LCS(0930010-BS2) Prepared&Analyzed: 31-May-00 <br /> 1,1-Diehloroethene 19.0 1.0 ug/l 20.0 95.0 65-135 <br /> Trichloroethene 19.0 1.0 20.0 95.0 70-130 <br /> C.hlorobenzene 19.0 1.0 20.0 95.0 70-130 <br /> Surrogate:Dibromo&fluoromethane 9.60 10.0 96.0 50.150 <br /> S eate:4-Bromofluorobenzene 11.0 10.0 110 50-150 <br /> i'K(OE30010-BS4) Prepared&Analyzed:05-Jun-00 <br /> I,1-Dichloroelhene 20.0 1.0 ug/1 20.0 100 65-135 <br /> Trichloroethene 21.0 1.0 20.0 105 70-130 <br /> Chlerobenzene 20.0 1.0 20.0 100 70-130 <br /> Surrogate:Dibromodiuoromethane 9.70 10.0 97.0 50-150 <br /> Surrogate:4-Bromofluorvbemene 12.0 10.0 120 50-150 <br /> Matrix Spike(OE30010-MSI) Source:W005713-03 Prepared&Analyzed:30-May-00 <br /> IJ-Dichloroethene 19.0 1.0 ug/l 20.0 ND 95.0 60-140 <br /> Trichloroethene 20.0 1.0 20.0 ND 100 60-140 <br /> ChImbenzene 20.0 1.0 20.0 ND 100 60-140 <br /> Surrogate:DibromodriAoromethane 9.60 10.0 96.0 50-150 <br /> Surrogate.4-Bromofluorobemene 11.0 10.0 110 50-150 <br /> Matrix Spike Dup(OE3001(1-MSDI) Source:W005713-03 Prepared&Analyzed:30-May-00 <br /> 1,I-Dichloroethene 21.0 1.0 ug/1 20.0 ND 105 60-140 10.0 25 <br /> Trichloroethene 22.0 1.0 20.0 ND 110 60-140 9.52 25 <br /> Chlorobenzene 21,0 1.0 " 20.0 ND 105 60-140 4.88 25 <br /> Surrogate:Dibromo&fluorumediane 9.30 10.0 93.0 50-150 <br /> Surrogate:4-Bromofluorobemene 11.0 10.0 110 50.150 <br /> Dia Analytical-Walnut Creek The results in this report apply to the samples analysed in accordance with the chedn of <br /> custody document This mudytical report must be reproduced in its entirety. <br /> Page 17 of 23 <br />