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Castle Analytical Laboratory, Atwater, CA <br /> ILab Report No H4100107 Date 10/11/2004 Page 3 <br /> Protect Name FRONTIER Analysis Volatile Organic Compounds by GC/MS Fuel <br /> I Project No 3RD QTR Method 8260FA <br /> Prep Meth SW5030B <br /> Field ID MW-13 GRAB Lab Samp ID 7421-12W <br /> Descr/Location MW-13 Recd Date 10/01/2004 <br /> Sample Date 09/30/2004 Prep Date 10/05/2004 <br /> Sample Time 1824 Analysis Date 10/05/2004 <br /> Matrix Water QC Batch VWMS-0054 <br /> Basis Not Filtered Notes <br /> IAnalyte Det Limit Rep Limit Note Result Units Pvc Dil <br /> Methyl-tert-butyl ether(MTBE) 0 289 05 MRL 39. 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 922% 1 <br /> 1,2-Dichloroethane-d4 53135 SLSA 944% 1 <br /> 1 <br /> I • <br /> 1 <br /> r <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> I <br /> • <br /> 1 <br /> Approved by Date 4 O <br /> 1 <br />