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1455 McDowell Blvd North,Ste D <br /> 4 ID Sequoia Petaluma,CA 94954 <br /> (707)792-1865 <br /> 1W Analytical www ww (707)sequotalabs c 42 <br /> com <br /> Cambria Environmental Project Equiva 5-7d <br /> 270 Perkins St Project Number 440 West Charter Way,Stockton Reported <br /> Sonoma CA,95476 Project Manager Aubrey Cool 12/12/00 07 37 <br /> Volatile Organic Compounds by EPA Method 8260B- Quality Control <br /> Sequoia Analytical - Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch OK10021 -EPA 5030B IP/T] <br /> Blank(OK10021-BLKI) Prepared&Analyzed 11/10/00 <br /> 1,2-Dibromoethane ND 20 ug/l <br /> 1,2-Dichloroethane ND 20 <br /> Ethanol ND 500 " <br /> tent-Butyl alcohol ND 50 " <br /> Methyl cert-butyl ether ND 20 " <br /> Di-isopropyl ether ND 20 " <br /> Ethyl tert-butyl ether ND 20 " <br /> tert-Amyl methyl ether ND 20 " <br /> Surrogate Dibromofluoromethane 510 500 101 50-150 <br /> Surrogate 1 2-Dichloroeihane-d4 510 500 101 50-150 <br /> Blank(OK10021-BLK2) Prepared&Analyzed 11/11/00 <br /> 1,2-Dibromoethane ND 20 ugA <br /> 1,2-Dichloroethane ND 20 " <br /> Ethanol ND 500 " <br /> tczt-Butyl alcohol ND 50 " <br /> Methyl tert-butyl ether ND 20 " <br /> Dirisopropyl ether ND 20 " <br /> Ethyl tent-butyl ether ND 20 " <br /> tett-Amyl methyl ether ND 20 " <br /> _ - Surrogate Dibromofluoromethane-- - - - 53 0- --- - - 500-- - - -106 - 50-150 - —- - -- — <br /> Surrogate 11-Dichloroethane-d4 460 500 920 50-150 <br /> LCS(OK10021-BSI) Prepared&Analyzed 11/10/00 <br /> Methyl tent-butyl ether 500 20 ug/l 500 100 70-130 <br /> Surrogate Dibromofluoromethane 510 500 101 50-150 <br /> Surrogate 11-Dichloroethane-d4 470 500 940 50-150 <br /> Sequoia Analytical-Petaluma The results in this report apply to the samples analyzed in accordance with the cha� <br /> custody document This analytical report must be reproduced in its entirety f <br /> Page 39 of 41 <br />