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CALIFORNIA LABORATORY SERVICES <br /> 03/10/04 09 03 <br /> w ENSR-Sacramento - Protect - Former Unocal 5098,5606 <br /> 10411 Old Placerville Rd,Suite 210 Project Number 06940-293-100 COC# 1 2,3,4 CNC0022 <br /> Sacramento,CA 95827-2508 -Project Manager Ben 1 Heningburg COC#1 1,2,3,4 <br /> Volatile Organic Compounds by EPA Method 8260B -Quality Control <br /> Reporting Spike Source %REC - RPD ' <br /> Analyte Result Limit Units Level Result %REC Limas RPD Limit Notes <br /> Batch CN01847- EPA 5030 Water MS <br /> Blank(CN01847-BLKI) Prepared&Analyzed 03/05/04 t <br /> 1 3,5-Tnmethylbenzene ND 050 µSIL <br /> Vinyl chloride ND to " <br /> Xylenes(total) ND 1 0 a <br /> Di-isopropyl ether ND 050 <br /> Ethyl Cert-butyl ether f ND 050 _ <br /> tert-Amyl methyl ether ND 050 " <br /> Tert-butyl alcohol - - - ND 15 0 yr '- - <br /> Surrogate 1,2-Dichloroethane-d4 131 100 131 66-135 <br /> Surrogate Toluene-d8 997 W _" 100 997 72-125 <br /> Surrogate 4-Bromofluorobenzene 969 100 969 73-125 <br /> LCS(CN01847-BSI) Prepared&Analyzed 03/05/04 <br /> Benzene 206 050 µg/L 200 103 60-135 <br /> Chlorobenzene 193 050 200 965 60-133 <br /> 1,1-Dichloroethene 239 050 200 120 42-150 <br /> Toluene 201 050--- 200 100-60=137 <br /> Trichloroethene 203 050 200 102 62-140 <br /> Surrogate-l2-Dichloroethane-d4 11-4 10 0 114 66-135 4 <br />` Surrogate Toluene48 _ 103 _ 100 103_ 72-125 <br /> Surrogate 4-Bromofluorobenzene 975 100 975 �73-125 <br /> LCS Dup(CN01847-BSDI) Prepared&Analyzed 03/05/04 <br /> Benzene198 _ _ _,050 µSIL �20 - 990 - 60-135 =396- - 25_ 6 <br /> Chlorobenzene 189 050 200 94 5 60-133 209 25 <br /> 1,1-Diehloroethene 23 1 050 200 116 42-150 340 25 <br /> Toluene 194 050 200 970 60-137 354 25 <br />µ <br /> Trichloroethene 197 050 200 _ 98 5_ -62-140 300 _ 25 - <br /> Surrogate 1 2-Drchloroerhane-d4 120 100 120 66-135 <br /> Surrogate Toluene-d8 102 100 102 72-125 <br /> Surrogate 4-Bromofluorobenzene 973 100 973 73-125 <br /> CA DONS FLAP Accreditation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova,CA 95742 www californialali cons 916-638-7301 Fax 916-638-4510 <br />