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4D1511 <br /> ]ndustnal Road <br /> Sequoia � San Carlos CA 9407 <br /> 0 , <br /> (650)232 9600 <br /> Analytical FAX(650)232 9612 <br /> www sequatalabs com <br /> yr <br /> Gettler-Ryan/Geostrategies(1) Project Unocal(4) <br /> 6747 Sierra Court, Suite J Project Number Former Unocal#5098&Montgmery Ward Reported <br /> Dublin CA,94568 Project Manager Deanna Harding 03/26/02 12 44 ' <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br />® Sequoia Analytical - San Carlos <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Leve! Result %REC Limits RPD Limit Notes <br /> Batch 2030023 -EPA 5030B 1P/Tl <br /> Blank(2030023-BLKI) Prepared&Analyzed 03/14/02 - <br /> Dibromochloromethane ND 20 ug/l <br /> 1,2-Dibromoethane ND 20 " <br /> Dibromomethane ND 20 " <br /> 1,2-Dibromo-3-chloropropane ND 50 <br /> 1,2-Dichlorobenzene ND 20 " <br /> 1,3-Dichlorobenzene ND 20 " <br /> 1,4-Dichlorobenzene ND 20 <br /> Dichlorodifluoromethane ND 50 " <br /> 1,1-Dichloroethane ND 20 " <br /> 1,2-Dichloroethane ND 20 <br /> 1,1-Dichloroethene ND l20 " <br /> cis-1,2-Dichloroethene ND 20 <br /> trans-1,2-Dichloroethene ND _ 20 - <br /> 1,2-Dichloropropane ND 20 <br /> 1,3-Dichloropropane ND 20 " <br /> 2,2-Dichloropropane ND 20 " <br /> 1,1-Dichl oropropene ND 20 <br /> Ethylbenzene ND 20 " <br /> �Hexachlorobutadiene ND 2 0 " <br /> - <br /> Isopropyl benzene ND 20 <br /> p-lsopropyltoiuene --- - ---------ND — 20 Y <br /> Methylene chlonde -- - - - -- - - - -vND-- -- '-5 <br /> Naphthalene ND 50 " <br /> n-Propylbenzene ND 2 0 <br /> �renes, w y tiND 2 0 <br /> 1,1,1,2-Tetrachloroethane ND 2 0 " <br /> 1,1,2,2-Tetrachloroethane ND 20 ' <br /> = Tetrachioroethene - - - y -ND 20, <br /> Toluene a ND 2 0 " <br /> 1,2,3-Trichlorobenzene ND 20 <br /> 1,2,4-Trichlorobenzene ND 2 0 " <br /> 1,1,1-Trichloroethane ND 20 <br /> 1,1,2-Trichloroethane ND 2 0 " <br /> Tnchloroethene -- - ND 2 0 " <br /> Tnchlorofluoromethane- _ _� _ _ND- _ _ ___ 5 0 <br /> 1,2,3-Tnchloropropane ND 2 0 " <br /> Sequoia Analytical - San Carlos The i esults in this report apply to the samples analyzed in accordance with the chain o <br /> custody document This analytical report must be reproduced to its entirety 1 <br /> Page 85 of 91 <br />