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Castle Analytical Laboratory, Atwater, CA <br /> Lab Report No H4100107 Date 10/1112004 Page 11 <br /> ` Project Name FRONTIER Analysis Volatile Organic Compounds by GC/MS Fuel <br /> Protect No 3RD QTR Method 8260FA <br /> Prep Meth SW5030B <br /> Field ID MW-9 Lab Samp ID 7421-3W <br /> Descr/Location MW-9 Rec'd Date 10/01/2004 <br /> Sample Date 09/30/2004 Prep Date 10/05/2004 <br />' Sample Time 1758 Analysis Date 10/05/2004 <br /> Matrix Water QC Batch VWMS-0054 <br /> Basis Not Filtered Notes <br /> Analyte I Det Limit Rep Limit Note Result Units Pvc Dil <br /> Methyl-tert-butyl ether(MTBE) 0 289 05 MRL 12 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(DIPE) 0155 05 MRL ND UG/L 1 <br /> tert-Butyl alcohol (TBA) 879 20 MRL ND UG/L 1 <br />' SURROGATE AND INTERNAL STANDARD RECOVERIES <br /> Toluene-d8 63.132 SLSA 964% 1 <br /> 1,2-Dichloroethane-d4 59-135 SLSA 102% 1 <br /> f <br /> I2W <br /> Approved by _,. `'�-�l AI P3 _ Date f j) (1�D <br />