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Castle Analytical Laboratory, Atwater, CA <br />' Lab Report No H4072004 Date 07/30/2004 t Page 8- <br /> Project Name DARPETRO#8 Analysis Volatile Organic Compounds by GC/MS Fuel <br />' Protect No NA Method 8260FA <br /> Prep Meth SW50306 <br />' Field ID MW-4 Lab Samp ID 7178-4W <br /> Descr/Location MW-4 Recd Date 07/20/2004 <br /> Sample Date 07119/2004 Prep Date 07/27/2004 <br /> Sample Time 1243 Analysis Date 07/27/2004 <br /> Matrix Water QC Batch VWMS-7274 <br /> Basis Not Filtered Notes <br /> Analyte Det Limit Rep Limit Note Result Units Pvc Dil <br /> Methyl-tent-butyl ether (MTBE) 0 289 05 MRL 17 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 /> Di-isopropyl ether(DIPE) 0155 05 MRL ND UG/L 1 <br /> tert-Butyl alcohol (TBA) 879 20 MRL ND UG/L 1 <br /> 1,2-Dichloroethane 0 081 05 MRL 3Q UG/L 1 <br /> 1,2-Dibromoethane 0 092 05 MRL ND UG/L 1 <br /> SURROGATE AND INTERNAL STANDARD RECOVERIES <br /> Toluene-d8 63-132 SLSA 116% 1 <br /> 1,2-Dichloroethane-d4 59-135 SLSA 119% 1 <br /> I <br /> I <br /> Approved by �J �;l Date � 0 <br />