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Castle Analytical Laboratory, Atwater, CA <br /> Lab Report No H4101107 Late 10/19/2004 Page 8 <br /> Project Name DARPETRO#8 Analysis Volatile Organic Compounds by GC/MS Fuel <br /> I Project No NA Method 8260FA <br /> Prep Meth SW5030B <br />' Field ID MW-4 Lab Samp ID 7445-4W <br /> Descr/Location MW-4 Recd Date 10/11/2004 <br /> Sample Date 10/07/2004 Prep Date 10112/2004 <br /> Sample Time 1300 Analysis Date 10/12/2004 <br /> I <br /> Matrix Water QC Batch VWMS-0124 <br /> Basis Not Filtered Notes <br />' Analyte Det Limit Rep Limit Note Result Units Pvc Dil <br /> Methyl-tert-butyl ether(MTBE) 0289 05 MRL G74 UG/L 1 <br /> Ethyl tert-butyl ether(ETBE) 0 084 05 MRL ND UG/L 1 <br />' tert-Amyl methyl ether(TAME) 0 067 05 MRL ND UG/L 1 <br /> Di-isopropyl ether(DIPS) 0155 05 MRL ND UG/L 1 <br /> tert-Butyl alcohol (TBA) 879 20 MRL ND UG/L 1 <br />' 1,2-Dichloroethane 0 081 05 MRL 31 UG/L 1 <br /> 1,2-Dibromoethane 0 092 05 MRL ND UG/L 1 <br /> SURROGATE AND INTERNAL STANDARD RECOVERIES <br />' Toluene-d8 63-132 SLSA 942% 1 <br /> 1,2-Dichloroethane-d4 59-135 SLSA 105° 1 <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br />' <br /> Approved pp oved by Date /d <br /> 1 <br />