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Castle Analytical Laboratory, Atwater, CA <br /> Lab Report No H4100107 Date 10/11/2004 Page 12 <br /> Project Name FRONTIER Analysis Volatile Organic Compounds by GC/MS Fuel <br /> Project No 3RD QTR Method 8260FA <br /> Prep Meth SW5030B <br /> Field ID MW-9 GRAB Lab Samp ID 7421-11W <br /> Descr/Location MW-9 Recd Date 10/01/2004 <br /> Sample Date 09/30/2004 Prep Date 10/05/2004 <br /> Sample Time 1735 Analysis Date 10105/2004 <br /> Matrix Water QC Batch VWMS-0054 <br /> Basis Not Filtered Notes <br /> Analyte Det Limit Rep Limit Note Result Units Pvc Dil <br /> Methyl-tert-butyl ether(MTBE) 0 289 05 MRL NO UG/L 1 <br /> Ethyl tent-butyl ether(ETBE) 0 084 05 MRL ND UG/L 1 <br /> telt-Amyl methyl ether(TAME) 0 067 05 MRL NO UG/L 1 <br /> Di-isopropyl ether(DIPS) 0155 05 MRL NO UG/L 1 <br /> tert-Butyl alcohol (TBA) 879 20 MRL NO UG/L 1 <br /> SURROGATE AND INTERNAL STANDARD RECOVERIES <br /> Toluene-d8 63-132 SLSA 939% 1 <br /> 1,2-Dichloroethane-d4 59-135 SLSA 101% 1 <br />� i <br /> I <br /> r <br /> r <br /> t <br /> t <br /> • <br /> Approved by <br /> RW Date [ c7 ( l <br />