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Castle Analytical Laboratory, Atwater, CA <br /> Lab Report No H2O40901 Date 04/19/2002 Page 3 <br /> Protect Name DARPETRO#8 Analysis Volatile Organic Compounds by GC/MS Fuel <br />' Protect No NA Method 8260FA <br /> Prep Meth SW5030B <br />' Field 10 MW-13 Lab Samp ID 4565-9W <br /> Descr/Location MW-13 Recd Date 04/09/2002 <br /> Sample Date 04/08/2002 Prep Date 04/10/2002 <br /> Sample Time 1115 Analysis Date 04/10/2002 <br /> Matrix Water QC Batch VWMS-4102 <br /> Basis Not Filtered Notes <br /> Analyte Det Limit Rep Limit Note Result Units Pvc Dd <br /> Methyl-tert-butyl ether (MTBE) 0 289 05 MRL 12 UG/t_ 1 <br /> 1 Ethyl tert-butyl ether(ETBE) 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 0.53 UG/L 1 <br /> 1 tert-Butyl alcohol (TBA) 879 20 MRL ND UG/L 1 <br /> SURROGATE AND INTERNAL STANDARD RECOVERIES <br /> Toluene-d8 70-130 SLSA 111% 1 <br /> 1 1,2-Dichloroethane-d4 70-130 SLSA 738% 1 <br /> i• <br /> 1 <br /> 1 <br /> 1 � <br /> 1 <br /> 1 <br /> 1 <br /> • <br /> 1 <br /> Approvep by _PUV2 Uate <br />