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Castle Analytical Laboratory, Atwater, CA <br />' Lab Report No H4072004 Date 07/30/2004 Page 6 <br /> Project Name DARPETRO#8 Analysis Volatile Organic Compounds by GC/MS Fuel <br /> Project No NA Method 8260FA <br /> Prep Meth SW5030B <br /> Field ID MW-2 Lab Samp ID 7178-2W <br /> Descr/Location MW-2 Rec'd Date 07/20/2004 <br /> Sample Date 07/19/2004 Prep Date 07/27/2004 <br /> Sample Time 1610 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-tert-butyl ether (MTBE) 0 289 05 MRL 11 UG/L 1 <br /> Ethyl tert-butyl ether(ETBE) 0 084 05 MRL ND UGIL 1 <br />' tert-Amyl methyl ether (TAME) 0 067 05 MRL ND UGIL 1 <br /> Di-isopropyl ether(DIPE) 0155 05 MRL ND UGIL 1 <br /> Cert-Butyl alcohol (TBA) 879 20 MRL 27 UG/L 1 <br />' 1,2-Dichloroethane 0 081 05 MRL 0.57 UGIL 1 <br /> 1,2-Dibromoethane 1 0 092 05 MRL ND UGIL 1 <br /> SURROGATE AND INTERNAL STANDARD RECOVERIES <br /> IToluene-d8 63-132 SLSA 951% 1 <br /> 1,2-Dichloroethane-d4 59-135 SLSA 100% 1 <br /> I <br /> Approved by _ Date <br /> T� <br />