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Castle Analytical Laboratory, Atwater, CA <br /> Lab Report No H3040905 Date 04/21/2003 Page 9 <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 ID MW-9 Lab Samp ID 5639-7W <br /> Descr/Location MW-9 Rec'd Date 04/10/2003 <br /> Sample Date 04/09/2003 Prep Date 04/11/2003 <br />' Sample Time 1115 Analysis Date 04/11/2003 <br /> Matrix Water QC Batch VWMS-4113 <br /> Basis Not Filtered Notes <br />' Analyte Det Limit Rep Limit Note Result Units Pvc Dil <br /> Methyl-tert-butyl ether(MTBE) 0289 05 MRL 90 UG/L 1 <br /> 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(DIPS) 0155 05 MRL ND UG/L 1 <br /> tert-Butyl alcohol (TBA) 879 20 MRL ND UG/L 1 <br />' SURROGATE AND INTERNAL STANDARD RECOVERIES <br /> Toluene-d8 76-129 SLSA 958% 1 <br /> 1,2-Dichloroethane-d4 53-141 SLSA 901% 1 <br /> 1 • <br /> Approved by —L!LI�7 nate �L24 l= <br /> I <br />