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Castle Analytical Laboratory, Atwater, CA <br /> Lab Report No H4072004 Date 07/30/2004 Page 9 <br /> Project Name DARPETRO#8 Analysis Volatile Organic Compounds by GC/MS Fuel <br /> I Project No NA Method 8260FA <br /> Prep Meth SW5030B <br /> I Field ID MW-5 Lab Samp ID 7178-5W <br /> Descr/Location MW-5 Rec'd Date 07/20/2004 <br /> Sample Date 07/19/2004 Prep Date 07/27/2004 <br />' Sample Time 1330 Analysis Date 07/27/2004 <br /> Matrix Water QC Batch VWMS-7274 <br /> Basis Not Filtered Notes DF <br />' Analyte Det Limit Rep Limit Note Result Units Pvc Dil <br /> Methyl-tent-butyl ether (MTBE) 289 5 MRL 37 UG/L 10 <br /> Ethyl tert-butyl ether(ETRE) 0 840 5 MRL ND UG/L 10 <br /> Itert-Amyl methyl ether(TAME) 0 670 5 MRL ND UG/L 10 <br /> Di-isopropyl ether(DIPE) 155 5 MRL ND UG/L 10 <br /> tert-Butyl alcohol (TBA) 879 200 MRL ND UG/L. 10 <br /> I1,2-Dichloroethane 0 810 5 MRL ND UG/L. 10 <br /> 1,2-Dibromoethane 0 920 5 MRL ND UGIL 10 <br /> SURROGATE AND INTERNAL STANDARD RECOVERIES <br /> Toluene-d8 63-132 SLSA 963% 1 <br /> 1,2-Dichloroethane-d4 59-135 SLSA 105% 1 <br /> Aft DF Reporting limits elevated due to matrix interferences <br /> I <br /> I <br /> Approved by . fy�2 _ Date 1 <br />