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404 N Wlget lane <br /> Walnut Creels,CA 94598 <br /> Sequoia (925)988-%73 <br /> 4 fAX(925)988-9673 <br /> Analytical www�`o`��Com <br /> Gettler Ryan,Inc -Dubh n Project Tosco <br /> 6747 Sierra Court Suite J Project Number Tosco#6981 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 20-Oct-0O 15 2b <br /> Volatile Organic Compounds by EPA Method 8260B- Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Spike Source %REC RPD <br /> Analyte Result R�L�t units Level Result %REC Lnnuts RPD Ltmit Notes <br /> Batch 0309013-EPA 5030B[PIT] <br /> Blank(OJ09013-BLKI) Prepared&.Analyzed 03-Oct-00 <br /> Ethanol ND 500 ug/l <br /> tart-Butyl alcohol ND 50 " <br /> Methyl tett-butyl ether ND 20 " <br /> Duasopropyl other ND 20 " <br /> Ethyl tort-butyl ether ND 20 " <br /> tart-Amyl methyl ether ND 20 " <br /> 1,2-Dschlorodhane ND 20 " <br /> Ethylene drbromrde ND 20 " <br /> Surrogate Dubromofluorometharn 490 500 980 50-150 <br /> Surrogate 1,2-Dichlornedwne-d4 450 500 900 50-150 <br /> Bknk(OJ09013-BLIC2) Prepared&Analyzed 04-oct-00 <br /> o! ND 500 u94 <br /> telt-Ekoyl alcohol ND 5o " <br /> Methyl teat-butyl ether ND 20 " <br /> Diasopropyl other ND 20 " <br /> Ethyl tertrbityl ether ND 20 " <br /> ten Amyl mathyl ether ND 20 " <br /> 1,2-Drchloroethane ND 20 " <br /> Ethylene dtbromrde ND 20 " <br /> Surrogate Dubromofluorowaham 48.0 5a0 96.0 50-150 <br /> Surrogate 1,2tDtchloroetbww-d4 440 500 8110 50-150 <br /> LCS(OJ09013-BSI) Prepared&Analyzed 03-Oct-00 <br /> Methyl tet-bsLLyl ether 409 20 ug4 500 8115 70-130 <br /> Surrogate Drbromofluoromethane 48.0 " 50.0 96.0 50.150 <br /> Surrogate 1,1 Dichloroetharw-d4 430 500 860 50-150 <br /> la Analytical-Walnut Creels The results rn thus report apply 10 the samples analyged in accondowe with the chain of <br /> custody document This analytical report must be mpro&ced in its ermrety <br /> Page 18 of 23 <br />