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Castle Analytical Laboratory, Atwater, CA <br /> Lab Report No H4100107 Date 10/11/2004 Page 7 <br /> =No3RD <br /> ONTIER Analysis Volatile Organic Compounds by GC/MS Fuel <br /> I QTR Method 8260FA <br /> Prep Meth SW5030B <br />' Field ID MW-17 Lab Samp ID 7421-8W <br /> Descr/Location MW-17 Recd Date 10/01/2004 <br /> Sample Date 09/30/2004 Prep Date 10/05/2004 <br />' Sample Time 1500 Analysis Date 10/05/2004 <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 a1 UG/L 1 <br /> Ethyl tert-butyl ether(ETRE) 0 084 05 MRL ND UG/L 1 <br /> tert-Amyl methyl ether(TAME) 0 067 05 MRL ND UG/L 1 <br /> DE-isopropyl ether(DIPE) 0155 05 MRL ND UG/L 1 <br /> tert-Butyl alcohol (TBA) 8 79 20 MRL I ND UG/L 1 <br />' SURROGATE AND INTERNAL STANDARD RECOVERIES <br /> Toluene-d8 63132 SLSA 933% 1 <br /> 1,2-Dichloroethane-d4 59-135 SLSA 904% 1 <br /> 1 <br /> r <br /> i <br /> i <br /> • <br />' � 3 <br /> Approved by _ -J Date <br /> r <br />