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f <br /> a o� kboratories <br /> 1 � <br /> • GROUND ZERO ANALYSIS, INC <br /> 1714 Main Street <br /> ' Escalon, CA 95320 <br /> Prof ID 329 Blank I QC Data Date Analyzed 03/12/01 <br /> ' <br /> Site Knowles Roek <br /> Method EPA 8260B <br /> i <br /> 1 Lab ID BLKB0312 Reporting <br /> Sample ID Blank Limit <br /> Matrix Water (U >L) <br /> Methanol ND 500 <br /> Ethanol ND 250 <br /> ' t-Butanol(TBA) ND 20 <br /> 1 Methyl-t-Butyl Ether(MTBE) ND 20 <br /> Dl-Isopropyl Ether(DIPE) ND 20 <br /> ' Ethyl-t-Butyl Ether(ETBE) ND 20 <br /> t-Amyl Methyl Ether(TAME) ND 20 <br /> ' 1,2-Dichloroethane(1,2-DCA) ND 20 <br /> 1,2-Dlbromoethane(EDB) ND 20 <br /> QAIQC <br /> Surrogate Spike Recovery 108% <br /> Matrix Spike Recovery Summary <br /> Percent Recovery <br /> Lab ID Client ID Analyte MS 1 MSD %RPD <br /> ' B03W SB1-W MTBE 78 1 72 B <br /> ' Laboratory Control Spike <br /> 1 Lab ID Analyte Percent Recovery <br /> 1 LCS0312C DIPE 76 <br /> . ND=Not detected at or above the reporting limit <br /> water samples are reported in kg/L sod and sludge samples in mglkg <br /> 1 3037 R6 St, Ceres, CA 95307 • None (209) 581-9280• Fax 209 581-9282 <br /> I <br />