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� 1 <br /> laboratories <br /> GROUND ZERO ANALYSIS,INC <br /> 1714 Mala Street <br /> Escalon, CA 95320 <br /> Prol ID 186 Blank I QC Data Date Analyzed 03112!01 <br /> Site Knowles Roek <br /> Method EPA 8260B <br /> Lab ID BLKB0312 Reporting <br /> Sample ID Blank Limit <br /> Matrix Water (u 1u <br /> i <br /> Methanol ND 500 <br /> Ethanol ND 250 <br /> E-Butanol(TBA) ND 20 <br /> Methyl-t-Butyl Ether(MTBE) ND 20 <br /> ' DI-Isopropyl Ether(DIPE) ND 20 <br /> I <br /> ' Ethyl-t-Butyl Ether(ETBE) ND 20 <br /> t-Amyl Methyl Ether(TAME) ND 20 <br /> i ' 1,2-Dichloroethane(1,2-DCA) ND F 20 <br /> 1,2-Dlbromoethane(EDB) ND 20 <br /> QA/QC <br /> ' Surrogate Spike Recovery 108% <br /> Matrix Spike Recovery Summary <br /> ' Percent Recovery <br /> Lab ID Client ID Analyte MS 1 MSD %RPD <br /> ' B03141 SB1-W MTBE 7B 1 72 8 <br /> Laboratory Control Spike <br /> Lab lD Analyte Percent Recovery <br /> ' LCS0312C DIPE 76 <br /> . ND=Not detected at or above the reporting limit <br /> "water samples are reported in 421t,soil and sludge samples in mog <br /> 3037 Fifth St, Ceres, CA 95307 0 Phone (209) 581-9280 * Fax (209) 581-9282 <br />