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404 N Wlget lane <br /> Sequoia Walnut (925reek U988 <br /> FAX(925)98&-9673 <br /> Analytical 'wrest wen <br /> Gdtkr Ryan,Inc -Dublm Project. Chevron <br /> 6747 Sierra Court State j Project Number Chevron X19-0171 Reported: <br /> Dublin CA,94568 Project Manager Deanna L Harding 05-Sep-0O 07 55 <br /> Volatile Organic Compounds by EPA Method 8260B- Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source QlaREC RPD <br /> Analyte Result Ltmrt Units Level Result %REC Lanita RPD L=t Notes <br /> Batch 018122012-EPA 5030E[PIT] <br /> Blank(OH22012-BLKI) Prepared&.Analyzed.22-Aug-00 <br /> Ethmol ND 500 u9/1 <br /> tat-Baty!alcohol ND 100 " <br /> Methyl tat"batyl ether ND 20 " <br /> Droop w"l abler ND 20 " <br /> Ethyl tat-butyl other ND 20 " <br /> tert.Amyl mdhyl other ND 20 " <br /> 1.2-Dwhlcroelhme ND 20 <br /> Rhylem d1romrde ND 20 " <br />&"vgats Dibr amofiuommedum 4&0 " Sao 960 50-1 30 <br /> Sivnvga a 1,2-Dichlomodem, 4 440 " Sao 880 50.130 <br /> Lw22o12-BSI) Prepared&Analyzed.22-Aug-00 — -- <br /> M atyl adur 3&2 20 ugll 500 764 70-130 <br /> Swrrogare.Dibronmyhroromedrmre 470 50.0 940 50.150 <br />&wnvga L 1,;-Dichlorord=w-d4 430 50.0 860 so-1s0 <br /> Matrix Spike(OH22012-MS1) Source-W008390-08 Prepared&Analyzed:22 Aug-W <br /> Methyl tat-"yl other 4&6 20 U94 500 59 854 60-150 <br /> Srorvgars Dibrvn►b%w m dharre 470 Soo 940 50.150 <br /> Srrrogate 1,2-D7chlonoedxm-d4 440 Sao 8&0 50-150 <br /> Matrix Spike Dup(OH22012-MSD!) Source W008390-M Prepared&Analyzed-22 Aug-W <br /> Mdhyl tat-butyl ether 541 20 U94 Soo 5.9 964 60-150 107 25 <br /> Swsngata.Dibromofheoromeduvw 480 " Soo 960 so-Iso <br /> Swsaogwe 1,2-DicNoravethum-d4 440 Soo 880 50-150 <br /> S Atlatytical`Wahm Cre& The results in thrs reboil apply to the sa Wks analyzed in accordance with die duan of <br /> cwarody do mart Tins wa"od report nwat be reproduced is its a army <br /> Page 9 of 11 <br /> .4746 <br />