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3 !� 404 N Wiget Lane <br /> Walnut Creek,CA 94598 <br /> Sequoia (925)98&9600 <br /> FAX(925)988-%73 <br /> Dior Analytical <br /> ter Ryan,Inc -Dublin Project Unocal <br /> Project Unocal SS#5886 Aeparted <br /> 5747 Sierra Court Suite J 14-Sep-99 17 49 <br /> Dtihlui CA,94568 Project Manager Deanna L Harding <br /> Volatile Organic Compounds by EPA Method 8260A-Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Linuts RPD Limit Notes <br /> Bach 9H31005. Prepared 30-Aug-99 Using EPA 5030B VP/TI <br /> Blank(9H31005-BLKI) <br /> ND 5+70 ugfl <br /> Ethanol <br /> tert-Butyl alcohol ND 109 N <br /> Meth}I tort-butt'l ether ND 20 <br /> Dmsopropyl ether ND 20 " <br /> Ethyl tert-butyl ether ND 20 <br /> tert-Amyl methyl ether ND 20 " <br /> 3 Surrogate Drbromoflaoromethane <br /> 535 Soo 10" 50.150 <br /> Surrogate 1 2-Drchloroethane-d4 <br /> 527 SO 0 105 5x1-150 <br /> m <br /> LCS(9H31005-BSI) 112 70-130 <br /> �[�thvt tert-hutN I'th�r 55 9 2 U u�i 50 U <br /> 5,7 500 1 tb JO-1�0 <br /> toga& Drhrr.nrofluoronrerhant. <br /> e 1 2 Dlclrloroethanc <br /> oi: -d1 <br /> 5,1 SrJ r1 104 ,n-I�a <br /> Matrix Spike (9H31005-MSI) Sournc W908373-12 <br /> \Irth,,l tett-butvl tether 53 1 20 ugl 500 ND 106 60-140 <br /> Surrogate Drbrmuofluoromethane <br /> 538 Sll Q 108 50-1511 <br /> Surragrrte 1 2-Dichloroethane d1 <br /> 531 500 tnh 50-130 <br /> Matrtr Spilt. Dup ()H31005-MSD1) <br /> Saurt.e W91?8373-12 <br /> Methyl tart hutvl ether 524 20 U61 500 ND 105 60-1.10 133 25 <br /> lurrogate Drbromofluororuetharre <br /> 535 50 n lo- 50-150 <br /> lurrogare 12-Drchloroethane da <br /> 333 j00 !Il" 5I1-I50 <br /> Scquoia Analytical -Walnut Creels Tire retutts in da r report apply to the +coupler umdy=ed to accordance wrth the ckun of <br /> cutfocly document Ther urrrlyacal report must be reproduced in rtr eratrery <br /> 0 A ]A a i. A <br /> P.tb, 15 ut 16 <br /> u t:9 11, rajt:c t snag <br />