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1551 Industnal Road ' <br /> Sequoia _ San Carlos CA 94070 <br /> r Analytical (650)232-9690 <br /> FAX(650)232-9612 <br /> www sNuoialabs com <br /> Gettler-Ryan/Geostrategies(1} Project Unocal(4) <br /> 6747 Sierra Court,Suite J Project Number Former Unocal#5098,Stockton Reported , <br /> Dublin CA,94568 Project Manager Deanna Harding 07/01/02 07 46 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical - San Carlos <br /> Reportmg <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes , <br /> MW-25S(1,206021-33)Water Sampled 06/11/02 09 50 Received 06/11/02 18'05 _ <br /> 1,2-Dibromo-3-chloropropane _ ND 50 ug/1 - 1 t2060034 06/21Y/02 06/21/02 _ BPA 8260B _ <br /> 1,2-Dichlorobenzene ND 2 0 <br /> 1,3-Dichlorobenzene ND 20 <br /> 1,4-Dichlorobenzene ND 2 0 " " " n <br /> Dichlorodifluoromethane ND 5 0 <br /> I,I-Dichloroethane ND 2 0 <br /> 1,2-Dichloroethane 25 20 ^ ^ ^ <br /> 1,1-Dichloroethene ND 20 ^ <br /> cis-1 2-Dichloroethene ND 2 0 " <br /> trans-l,2-Dichloroethene ND 2 0 It " " ^ <br /> 1,2-Dichloropropane ND 20 " <br /> 1,3-Dichloropropane ND 2 0 ItIt I, <br /> 2,2-Dichloropropane ND 2 0 <br /> 1,1-D ichloropropene ND 2 0 " ^ <br /> Ethylbenzene ND 2 0 <br /> Hexachlorobutadiene ND 2 0 <br /> Isopropylbenzene ND 2 0 " ^ <br /> p-Isopropyltoluene ND 2 0 " <br /> Methylene chloride ND 5 0 <br /> Naphthalene ND 5 0 <br /> =n-Propylbenzene ND 2 0- - - - - --- <br /> Styrene ND 2 0 <br /> =1,1;1-2-Tetrachloroethane -=--- ------- -ND-- ---20 -- "=- --"=---" --- "---- - - -" - -- --- <br /> - 1,1,2,2-Tetrachloroethane ND 2 0 <br /> Tetrachloroethene- - - -----ND� -- -20 <br /> Toluene ND 2 0 <br /> 1,2,3-Trichlorobenzene ND 2 0 " <br /> -1,2,4-Trichlorobenzene- - - --ND- s -2 0-- <br /> 1,1,1-Trichloroetharie <br /> --1,I,1-Trichloroethane ND 2 0 n " " <br /> 1,I,2-Trichloroethane ND 2 0 <br /> Trichloroethene - ND 2 0 " - <br /> Trichlorofluoromethane ND 5 0 " <br /> 1,2,3-Trichloropropane ND 2 0 <br /> 1,2,4-Trimethylbenzene ND 2 0 <br /> 1,3,5-Trimethylbenzene ND 2 0 <br /> Vinyl chloride ND 2 0 " <br /> Total Xylenes _ _ ND - 2 0 <br /> =Surrogate 1,2-Dichloroethane-d4_____ _ _ — _ _ _ -110%_ _ 76-114 <br /> -Surrogate Toluene-d8 975% 88-110 <br /> Surrogate 4-BFB 908% 86-115 " <br /> Sequoia Analytical- San Carlos The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 58 of 103 ' <br />