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� 1 <br /> 1 <br /> aTson laboratories <br /> . Ground Zero Analysis <br /> ' 1714 Main Street <br /> Escalon,CA 95320 Date Sampled 01/13/03 <br /> Date Received 01/13/03 <br /> ' Pro) ID 329 Volatile Organics By GUMS Date Analyzed 01/15/03 <br /> Site Knowles Roek Closure <br /> Method EPA 8260B <br /> Lab ID D01051 D01052(d) D01053 D01054(d) <br /> ' Sample ID KR MW 16A-10 KR MW 16A-20 KR MW 16A-40 KR MW 16A-45 <br /> Matnx Soil Soil Soil Soil <br /> ' t-Butanol(TBA) <0 050 <1 0 <0 050 <010 <br /> Methyl-t-Butyl Ether(MTBE) <0 005 <010 0 007 032 <br /> ' Di-Isopropyl Ether(DIPE) <0 005 <010 <0 005 <0 010 <br /> ' Ethyl-t-Butyl Ether(ETBE) <0 005 <010 <0 005 <0 010 <br /> t-Amyl Methyl Ether(TAME) <0 005 <010 <0 005 <0010 <br /> '• 1,2-Dlchloroethane(1,2-DCA) <0 005 <010 <0 005 <0 010 <br /> 1,2-Dlbromoethane(EDB) <0 005 <010 <0 005 <0 010 <br /> ' QA/QC <br /> Surrogate Spike Reoovery 97% 93% 93% 94% <br /> 1 <br /> ' (d) Sample diluted due to high concentration of target analytes and/or high organic content <br /> Note Water samples are reported in pg1L,sod and sludge samples in mglkg <br /> Hiram Cueto <br /> ' Lab Director <br /> DHS Certification No 2359 <br /> ' 3037 Fifth St, Ceres, CA 95307 • Phone (209) 581-9280 • Fax (209) 581-9282 <br /> i <br />