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• 404 N W eget Lane <br /> Sequoia Walnut Geek,CA 94598 <br /> (925)988-9600 <br /> Analytical FAX(925)988-9673 <br /> Ibublttler Ryan,Inc -Dublin Project Unocal <br /> in <br /> 747 Sierra Court Suite J Project Number Unocal SS#5886 Reported <br /> CA,94568 Project Manager Deanna L Harding 14-Sep-99 17 49 <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 /> MW4D (W908373-05)Water Sampled 17-Aug-9910 26 Received 18-Aug-99 14 00 <br /> Ethanol ND 500 ug/I 1 9H31005 30-Aug-99 31-Avg-99 EPA 8260A <br /> tert-Butyl alcohol ND 100 " <br /> Methyl tert-butyl ether 48 20 " <br /> Di-isopropyl ether ND 20 <br /> Ethyl tert-butyl ether ND 20 <br /> tent-Amyl methyl ether ND 20 " <br /> Surrogate Drbromofluoromethane 106% 50-150 i <br /> Surrogate 12-Dtchloroethane-l4 104% 50-150 " <br /> MW4S(W908373-06)Water Sampled 17-Aug-99 10 00 Received 18-Aug-99 14 00 <br /> Ethanol ND 500 u2/1 1 91-131005 30-Aug-99 31-Aug-99 EP-%8260 <br /> tert-Butyl alcohol ND 100 <br /> Meth%I tent-hut)I ether 48 20 <br /> Dr-i,opropvl ether ND 20 <br /> FtlnI tert-bLaNI ether ND 20 <br /> '11111Ort-An1%I rnetlivl -tliu ND 2 0 - <br /> rrtogafe Drhtontoflrroionielhane 106 o 50-150 <br /> .Srurogute 1 2-Dichloraethanetl4 lila % 50-1511 <br /> MW-5D(W908373-07)Water Sampled 17-Aua 99 09 05 Ri-cened 1,8-Aug-991400 <br /> Ethanol ND 500 Ue/l I 9H31005 30-,Aug-99 31-Aug 99 EPA 8260.A <br /> tert-Butvl AL,011o1 ND 100 <br /> Metlivl tert-butvl,.then ND 20 <br /> Di-i,opropvl ether ND 20 <br /> Etln I tort-hutti I ether ND 20 <br /> text-Amvl mcthNI ether ND 20 <br /> Sruyogate Dthtontofluorontethane 106% 50-150 <br /> 5rrrtogate 12-DichlotoetlwneKl4 104 % 50-150 <br /> Sequoia Ana N tical - Walnut Creek The rew It y in tln a relxrri( r ply to the uarrple%cm(A.edr n mcordcnrce with the clKan of <br /> cuytorly documeni Thty am14trctd repnrr murt be reproduced rrrrty enaren <br /> t1 ne e g e-y 'ro}e c.t a P,ge. 7 cit 16 <br />