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Castle Analytical Laboratory, Atwater, CA <br /> Lab Report No H4062109 Date 06/3012004 Page 12 <br />' Project Name FRONTIER TRUCKING Analysis Volatile Organic Compounds by GC/MS Fuel <br /> Protect No NA Method 8260FA <br /> Prep Meth SW50308 <br />' Field ID MW-3R Lab Samp ID 7085-3W <br /> Descr/Location MW-3R Rec'd Date 06/22/2004 <br /> Sample Date 06/18/2004 Prep Date 06/27/2004 <br /> Sample Time 1950 Analysis Date 06/27/2004 <br /> Matrix Water QC Batch VWMS-6274 <br />' Basis Not Filtered Notes DF <br /> Analyte Det Limit Rep Limit Note Result Units Pvc Dil <br />' Methyl-tert-butyl ether(MTBE) 58 100 MRL 1000. UG/L 200 <br /> Ethyl tert-butyl ether(ETBE) 0 420 25 MRL 32 UG/L 5 <br /> tert-Amyl methyl ether(TAME) 0 335 2.5 MRL 29 UG/L 5 <br /> Di-isopropyl ether(DIPE) 0 775 25 MRL ND UG/L 5 <br /> tent-Butyl alcohol (TBA) 440 100 MRL ND UG/L 5 <br /> 1,2-Dichloroethane 0 405 25 MRL ND UG/L 5 <br /> 1,2-Dibromoethane 0 460 25 MRL NO UG/L 5 <br /> SURROGATE AND INTERNAL STANDARD RECOVERIES <br /> Toluene-d8 63-132 SLSA 974% 1 <br /> 1,2-D,chloroethane-d4 59-135 SLSA 957% 1 <br /> DF Reporting limits elevated due to matrix interferences <br /> I <br /> Approved by Lp—±12 Date <br />