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404 N Wtget Lane <br /> 4 Sequoia Walnut Creek,CA 94598 <br /> (925)988-9600 <br /> Analytical FAX(925)988-9673 <br /> 1ettler Ryan,Inc -Dublin Project Unocal <br /> 6747 Sierra Court Swte J Project Number Unocal 4 1205 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 16-Nov-99 17 21 <br /> Volatile Organic Compounds by EPA Method 8260A <br /> Sequoia Analytical -Walnut Creek <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW4(W910487-05)Water Sampled 21-Oct-99 11 10 Received 21-Oct-99 18 56 <br /> tert-Butyl alcohol ND 100 ug/I 1 9KO2012 28-Oct-99 28-Oct-99 EPA 8260A <br /> Methyl tert-butyl ether ND 20 <br /> Di-isopropyl ether ND 20 <br /> Ethyl tert-butyl ether ND 20 <br /> tert-Amyl methyl ether ND 20 " <br /> Surrogate Drbrontofluoromerhane 100 % 50-150 <br /> Supiogate 12-Dtchlotoethwre-d4 880 % 50-150 <br /> • <br /> Sequoia Analvocal - Walnut Crcck Theresults rntlnsret>rrrtrrppIvtothe srmrplet rarulscedintic currkmcewiththe chnnof <br /> cuts my drxaarent 7 hrr urarrtvtrcrrl report lau ct lx, reprrxluced yr r rt enni-L n <br /> *AAJu'4-L <br /> PV-4 14 <br /> k? <br /> ju uu C I eg cy Proj"t Mara p,g4 S ut 3 <br />