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Castle Analytical Laboratory, Atwater, CA <br /> Lab Report No H4041503 Date 04/23/2004 t Page 5 <br /> Project Name DARPETRO#8 Analysis Volatile Organic Compounds by GC/MS Fuel <br /> Protect No NA Method 8260FA <br /> Prep Meth SW5030B <br /> Field ID MW-5 Lab Samp ID 6864-4W <br /> Descr/Location MW-5 Recd Date 04/16/2004 <br /> Sample Date 04/14/2004 Prep Date 04/21/2004 <br /> Sample Time 1520 Analysis Date 04/21/2004 <br /> Matrix Water QC Batch VWMS-4214 <br /> Basis Not Filtered Notes DF <br /> Analyte Det Limit Rep Limit Note Result Units Pvc Dtl <br /> Methyl-tert-butyl ether(MTBE) 289 5 MRL 37 UG/L 10 <br /> Ethyl tert-butyl ether(ETBE) 0 840 5 MRL ND UG/L 10 <br /> tert-Amyl methyl ether(TAME) 0 670 5 MRL ND UG1L 10 <br /> Di-isopropyl ether(DIPS) 155 5 MRL ND UG/L 10 <br /> tent-Butyl alcohol (TBA) 879 200 MRL ND UG/L 10 <br /> 1,2-Dtchloroethane 0 810 5 MRL ND UG/L 10 <br /> 1,2-Dtbromoethane 0 920 5 MRL ND UG/L 10 <br /> SURROGATE AND INTERNAL STANDARD RECOVERIES <br /> Toluene-d8 76-129 SLSA 121% 1 <br /> 1,2-Dichloroethane-d4 53-141 SLSA 849% 1 <br /> DF Reporting limits elevated due to matrix interferences <br /> I <br /> 1 <br /> I <br /> I <br /> Approved by Date 23 <br />