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Sequoia an I al Road <br /> San Carlos losC9 <br /> (659)2323 2-969600 <br /> r w Analytical <br /> FAX(650)232-961212 <br /> www sNuoialabs corn <br /> Gettler-Ryan/Geostrategies(1) Proueet 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 - Quality Control <br /> Sequoia Analytical - San Carlos <br /> Reporting Spike Source _ _ %REC .- RPD <br /> Analyte Result Lunit Units Level Result %REC Lunits RPD Limit Notes <br /> Batch 2060032-EPA 5030B [P/T1' <br /> Blank(2060032-BLKI) - - Prepared&Analyzed 06/20/02 <br /> Dibromochloromethane ND 20 ug/I ' <br /> 1,2-Dibromoethane ND 20 " <br /> Dibromomethane ND 20 " <br /> 1,2-Dibromo-3-chloropropane ND 50 <br /> t,2-Dichlorobenzene ND 20 " <br /> 1,3-Dichlorobenzene ND 20 " <br /> 1,4-Dichlorobenzene ND 20 <br /> Dichlorodifluoromethane ND so " <br /> 1,1-Dichloroethane ND 20 " <br /> 1,2-Diehloroethane ND 20 " <br /> 1,I-Dichloroethene ND 20 ' <br /> cis-1,2-Dichloroethene ND 20 - <br /> trans-l,2-Dichloroethene ND 20 " <br /> 1,2-Dichloropropane ND 20 " <br /> 1,3-Dichloropropane ND 20 " <br /> 2,2-Dichloropropane ND 20 " <br /> I i-Dirh1nrnnrnnrne Nib ff " <br /> Ethylbenzene ND 20 " <br /> �Hexachlorobutadiene ND 20 " <br /> lsopropylbenzene ND 20 " y <br /> p-lsopropyltoluene - - -- ----- — —� ND TT 20 <br /> Methylene chloride- - - ___----- --ND-_ - 50 <br /> Naphthalene ND 50 <br /> n-Propylbenzene ND 20 " <br /> -...Styrene.- —ND_- --20- <br /> 1,1,1,2-Tetrachlorocthane <br /> -20-1,1,1,2-Tetrachlorocthane ND 20 " <br /> 1,1,2,2-Tetrachloroethane ND 20 <br /> Tetrachloroethene ND 20 <br /> Toluene ND 20 ' <br /> 1,2,3-Trichlorobenzene ND 20 ' <br /> 1,2,4-Tnchlorobenzene ND 20 " <br /> 1,1,1-Trichloroethane ND 20 " <br /> 1,1,2-Trichloroethane ND 20 - <br /> Trichloroethene µ 'ND 20 " <br /> Trichlorofluoromethane - - - - -- - ----ND- - - -5 0-_ <br /> 1,2,3-Trichloropropane ND 20 <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 86 of 103 ' <br />