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Sequoia 404 N .CA lane <br /> Walnut Creek,CA 9459$ <br /> • __ - - — -- -_ _ _ -- - - (925)988-9600 =- - <br /> *W Analytical -FAX(925)98&9673 <br /> {'settler Ryan,Inc -Dublin Project Unocal <br /> 6747 Sierra Court Suite 7 Project Number Unocal SS#5886 Reported <br /> (Dublin CA:;-94568 _ - -- Project ManaeerfDeanna L—HardingTI4-Sep-99 17-49— <br /> Volatile <br /> 749Volatile Organic Compounds by EPA Method 8260A <br /> Sequoia Analytical -Walnut Creek <br /> Reporting <br /> Analyte Result Lutist Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-8I(W908373=14)Water Sampled 16-Aug-9912 20 Received 18-Aug-9914 00 <br /> Ethanol ND 500 ue/l t 9H31005 30-Aug-99 30-Aug-99 EPA 8260A <br /> tert-Butyl alcohol ND 100 <br /> Methyl cert-butyl ether 26 20 ^ ^ ^ <br /> Dt-tsopropvl ether ND 20 ^ ^ <br /> Ethyl tert butyl ether ND 20 - ^ - <br /> telt-Amyl methyl ether ND 20 ^ ^ <br /> Surrogate Drbromofluoromedrane 102 % 50-150 ^ <br /> Surrogate 1,2-Dtchloroethane-d4 960% 50-150 - <br /> ,NIW-8D(W908373-15)Water Sampled 16-Aug-991245 ReCened 18-Aug-99 14 00 <br /> Ethanol ND 500 ug/l l 91-131005 30--kug-99 30--.ug 99 EPA 8260-k <br /> tort-Butvl alcohol ND [no <br /> lkthrl tent-but-vI 4-thLr 77 20 <br /> Di-i.oprop%I ether ND 2 0 <br /> Elh%I tert-but-,1 tther ND 2 1) f• <br /> tart-Am%I mcih%l -ilio ND 2 0 <br /> Srutogate Dibromofltroromethalte 100 % 50-150 <br /> Stutngate 12-Dtchloroethane-d4 980% 50-150 <br /> N1NV=1S(W908373-16)Water Sampled 16-Aug-991445 ReLened 18-Aug-991400 <br /> Ethanol ND 500 u211 1 9)-[31005 30-aug-99 30--ku6 99 EP%8260-\ <br /> tart-Btttrl a1L01i01 ND 100 <br /> tiL-iliNI Cert-butyl ether ND 20 <br /> Di-isopropvl ethos ND 20 <br /> E(hvl tart-but%I ether ND 20 <br /> tart-Amvl trtethvl Lther ND 20 <br /> Sutrogate D+btomoJlaoromethane 104% 50-150 <br /> %utrogate 1 2-Drchlomethane-d4 102 % 50-150 <br /> Sicgttota Analytical -Walnut Creek The revulrt in tin r report apply to rhe stnnplev tmah.ed to accordance with the chan of <br /> eurtody document Thty aw4 tcal mpart mu vt be reproduced to a LY enriren <br /> ii nl eg 'V rO�tLt a 1!t <br /> PagL lU of Ifs <br />