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rCastle Analytical Laboratory, Atwater, CA <br /> rLab Report No H4100107 Date 10/11/2004 Page 2 <br /> Protect 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-13 Lab Samp ID 7421-4W <br /> Descr/Location MW-13 Recd Date 10/01/2004 <br /> Sample Date 09/30/2004 Prep Date 10/05/2004 <br /> Sample Time 1846 Analysis Date 10/05/2004 <br /> Matrix Water QC Batch VWMS-0054 <br /> Basis Not Filtered Notes <br /> rAnalyte Det Limit Rep Limit Note Result Units Pvc Dil <br /> Methyl-tert-butyl ether(MTBE) 0 289 05 MRL ND UG/L 1 <br /> Ethyl tert-butyl ether(ETBE) 0 084 05 MRL ND UGIL 1 <br /> rtert-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 /> SURROGATE AND INTERNAL STANDARD RECOVERIES <br /> Toluene-d8 63-132 SLSA 89 2°� 1 <br /> 1,2-Dtichloroethane-d4 5&135 SLSA 93 7% 1 <br /> r <br /> ri <br /> r � <br /> r <br /> r <br /> r <br /> r <br /> r <br /> r <br /> i <br /> Approved by ti/�� Date 0 I I/04 _ <br /> 1 <br />