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Castle Analytical Laboratory, Atwater, CA <br /> ILab Report No H4101107 Date 10/19/2004 Page 11 <br /> Project Name DARPETRO#8 Analysis Volatile Organic Compounds by GC/MS Fuel <br /> I Protect No NA Method 8260FA <br /> Prep Meth SW5030B <br /> Field ID MW-7 Lab Samp ID 7445-7W <br /> Descr/Location MW-7 Recd Date 10/11/2004 <br /> Sample Date 10/07/2004 Prep Date 10/12/2004 <br /> Sample Time 1226 Analysis Date 10/12/2004 <br /> W <br /> Matrix Water QC Batch VMS-0124 <br /> Basis Not Filtered Notes <br /> Analyte Det Limit Rep Limit Note Result Units Pvc Dd <br /> Methyl-tert-butyl ether(MTBE) 0289 05 MRL 74 UG/L. 1 <br /> Ethyl tert-butyl ether(ETRE) 0 084 05 MRL ND UG/L 1 <br /> tort-Amyl methyl ether(TAME) 0 067 05 MRL ND UG/L 1 <br /> Di-isopropyl ether(DIPS) 0155 05 MRL 28 UG/L 1 <br /> tert-Butyl alcohol (TBA) 879 20 MRL 37 UG/L 1 <br /> 1,2-Dfchloroethane 0 081 05 MRL 0.68 UG/L 1 <br /> 1,2-Dibromoethane 0 092 05 MRL ND UGIL 1 <br /> SURROGATE AND INTERNAL STANDARD RECOVERIES <br /> Toluene-d8 63-132 SLSA 959% 1 <br /> 1,2-Dichloroethane-d4 59-135 SLSA 925% 1 <br /> i <br /> Approved by l�� Date <br />