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Sequoia Walnl:" <br /> (925)988-9600 <br /> qw Analytical FAX(925)9t3&9673 <br /> www.s��,oia�s.cotr, <br /> - -* <br /> Gettler Ryan,Inc.-Dublin Project: Chevron <br /> 6747 Sierra Court Suite 7 Project Number. Chevron#9-0557 Reported: <br /> Dublin CA,94568 Project Manager: Deanna L.Harding 30-Aug-00 16.41 <br /> Total Purgeable Hydrocarbons (C6-C12),BTEX and MTBE by DHS LUFT - Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level kesult %REC Limits RPD Limit Notes <br /> Batch OH24003-EPA 5030B [PIT] <br /> Blank(OH24003-BLK1) Prepared&Analyzed:24-Aug-00 <br /> Purgeable Hydrocarbons ND 50 ugll <br /> Benzene ND 0.50 " <br /> Toluene ND 0.50 " <br /> Ethylbenzene ND 0.50 " <br /> Xylenes(total) ND 0.50 " <br /> Methyl tert butyl ether ND 2.5 <br /> Surrogate:g g a-Trifluvnxolue- 17.4 30.0 91.3 70-130 <br /> LCS(OH24003-BS1) Prepared&Analyzed:24-Aug-00 <br /> Benzene 19.0 0.50 ug/1 20.0 95.0 70-130 <br /> Toluene 19.1 0.50 20.0 95.5 70-130 <br /> Ethyk-zene 19.3 0.50 20.0 96.5 70-I30 <br /> XYleaas(total) 55.3 0.50 60.0 92.2 70-130 <br /> Sinvogate:gqa-7WJIuorotohwne 188 30.0 960 70.130 <br /> Matrix Spike(OH24003-MSI) Source:W008367-09 Prepared&Analyzed:24-Aug-00 <br /> 19:8 _ 0.50�ug/1-20:0 ND 99:0--70=130 <br /> Tohmne 19.7 0.50 20.0 ND 98.5 70-130 <br /> EthY%a=- 20.0 0.50 20.0 ND 100 70-130 <br /> Xylenes(total) 57.7 0.50 60.0 ND 96.2 70.130 <br /> Swmgars.a;q -7Wfhwrozohwne 27.3 " 30.0 91.0 70-130 <br /> Mat:rk Spike Dup(OH24003-MSDi) Source:WOM67-09 Prepared&Analyzed:24-Aug-00 <br /> Benzene 21.0 0.50 ng/i 20.0 ND 105 70-130 5.88 20 <br /> .Toluene 21.0 0.50 20.0 ND 105 70-130 6.39 20 <br /> Ethyibenzaae 21.1 0.50 20.0 ND 106 70-130 5.35 20 <br /> XYlenes(tow) 60.8 0.50 60.0 ND 101 70.130 5.23 20 <br /> Swrnogafe:gga-TrObrororoiuew 180 30.0 93.3 70-130 <br /> Sequoia Analytical-Walnut Creek 77re results in this repot apply to the samples ana&ced in awordwee with dw chain <br /> cano iy doe mrent Tlas a na5Wcal report must be reproduced in its errlir+ety. <br /> Page 7 of 10 <br />