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Castle Analytical Laboratory, Atwater, CA <br /> Lab Report No.: H4061408 Date: 06/25/2004 Page: 3 <br /> Project Name: OLIVAREZ PROPERTY Analysis: Volatile Organic Compounds by GC/MS Fuel <br /> Project No: NA Method: 8260FA <br /> Prep Meth: SW5030B <br /> Field 1D: MW-1R Lab Samp ID: 7059-2W <br /> Descr/Location: MW-1R Recd Date: 06/15/2004 <br /> Sample Date: 06/11/2004 Prep Date: 06/23/2004 <br /> Sample Time: 0940 Analysis Date: 06/23/2004 <br /> Matrix: Water QC Batch: VWMS-6234 <br /> Basis: Not Filtered Notes: DF <br /> Analyte Det Limit Rep Limit Note Resutt Units Pvc Dil <br /> Methyl-tert-butyl ether(MTBE) 28.9 50. MRL ND UG/L 100 <br /> Ethyl tert-butyl ether(ETBE) 8.40 50. MRL ND UG/L 100 <br /> tert-Amyl methyl ether(TAME) 6.70 50. MRL ND UG/L 100 <br /> Di-isopropyl ether(DIPE) 15.5 50. MRL ND UG/L 100 <br /> tert-Butyl alcohol (TBA) 879_ 2000. MRL ND UGIL 100 <br /> 1,2-Dichloroethane 8.10 50. MRL ND UG/L 100 <br /> 1,2-Dibromoethane 9.20 50. MRL ND UG/L 100 <br /> SURROGATE AND INTERNAL STANDARD RECOVERIES: <br /> Toluene-d8 63-132 SLSA 103% 1 <br /> 1,2-Dichloroethane-d4 59-135 SLSA 93.2% 1 <br /> DF: Reporting limits elevated due to matrix interferences <br /> • <br /> Approved by: l k2 __ Date: <br />