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404 N Wiget Lane <br /> Sequoia Walnut Creek,CA 94598 <br /> (925) 98&9600 , <br /> Analytical FAX(925)988-9673 , <br /> Gettlei Ryan lnc -Dublin Project Unocal <br /> 6747 SIL11d Court SwlL. I Project Number Unocal# 8671 Reported I <br /> Dublin LA 94569 Project Manager Deantia L H irding 24-Feb-00 07 13 <br /> Volatile Organic Compounds by EPA Method 8260A - Quality Control <br /> Sequoia Analytical - Walnut Creek <br /> Reporting Spike Souice %REC RPD <br /> An rlvt� Result Limit U111b, Level Result 1%REC Limits RPD Limit Notes <br /> B.ItdJ UB16007 Pi epai ul 16-Feb-00 Using EPA 503013 [PIT] <br /> Blan1,(081611117-BLKI) <br /> Ethdnol ND 500 ugll <br /> Leri Butyl 11-ohol ND 100 " <br /> Metllvi tori-butyl ether ND 2 0 " <br /> Dr-rwpropvl ether ND 2 0 <br /> EtI1V1 tell-hutVI ether ND 2 0 " <br /> tent Alnyl methyl ether ND 20 <br /> 1 2-Did loro,ib ine ND 20 " <br /> Cthvl.,nedlhrolnldc ND 2 0 " <br /> %urroSale Dibiarnolluotoinc1ham 540 " 500 108 50-150 <br /> rogatc 1 2 Drchloroethenw-d4 550 500 110 50-150 <br /> 10"'nl.(0B16007-BLK2) <br /> Ethanol ND 500 ug/1 <br /> tort-Butyl4Iwhol ND 100 " <br /> Methyl teri hWvl ether ND 120 <br /> " <br /> 1)r-rsopropvl etli,r ND 20 " <br /> Ethyl tert-butyl ether ND 20 <br /> telt-Arnvl nl,thyl ether ND 20 " <br /> 1 2-DidilwocIII u1, ND 20 <br /> FthVletle drbrornlrlle ND 20 " <br /> Surrostctic Dthroutofluoiartrcultane 530 11 500 106 50-150 <br /> Srutogale 1 2-Dichloloodram-d4 560 " 500 112 50-150 <br /> LCS(OB16007-BSI) <br /> Methvl tori-b11LVl'thee 538 20 ug/l 5U U lUR 7U-130 <br /> Surlo}rcic Uthion+oJluototm thruee 540 500 108 50-150 <br /> Smtogatc 1 2 Dtchloroethairc 14 560 500 112 50-150 <br /> quota A ialYtical- Walnut Creek The results in thus trpol t apply to the scanples analyzed in accordance lvith the churn of <br /> clislodydocuntent This analytical report must beieproducedinrLseturiety <br />"1 <br /> zY AlanB KCnlp��La �ltonl Dii�ctor Page 7 of 9 <br />