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ICastle Analytical Laboratory, Atwater, CA <br />' Lab Report No H4101107 Date 10/19/2004 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-5 Lab Samp ID 7445-5W <br /> Descr/Location MW-5 Rec'd Date 10/11/2004 <br /> Sample Date 10/07/2004 Prep Date 10/12/2004 <br /> Sample Time 1709 Analysis Date 10/12/2004 <br />' Matrix Water QC Batch VWMS-0124 <br /> Basis Not Filtered Notes DF <br /> Analyte Det Limit Rep Limit Note Result Units Pvc Dil <br /> Methyl-tert-butyl ether(MTBE) 0 578 1 MRL 30. UG/L 2 <br /> Ethyl tert-butyl ether(ETBE) 0168 1 MRL ND UG/L 2 <br /> tert-Amyl methyl ether(TAME) 0134 1 MRL ND UG/L 2 <br /> Di-isopropyl ether(DIPE) 0 310 1 MRL ND UG/L 2 <br /> tert-Butyl alcohol (TBA) 176 40 MRL 61 UG/L 2 <br />' 1,2-Dichloroethane 0162 1 MRL 23 UGIL 2 <br /> 1,2-Dibromoethane 0184 1 MRL ND UG/L 2 <br /> SURROGATE AND INTERNAL STANDARD RECOVERIES <br />' Toluene-d8 63-132 SLSA 697% 1 <br /> 1,2-Dichloroethane-d4 59-135 SLSA 804% 1 <br /> DF Reporting limits elevated due to matrix interferences <br /> I <br /> Approved f"% <br /> NM �� �y � Date L� 1�7La�z <br />