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Castle Analytical Laboratory, Atwater, CA <br /> Lab Report No.: H3062702 Date: 07/10/2003 Page: 8 <br /> Project Name: OLIVAREZ PROPERTY Analysis: Volatile Organic Compounds by GC/MS Fuel <br /> Project No: 2ND QTR Method: 8260FA <br /> Prep Meth: SW5030B <br /> Field ID: MW-5 Lab Samp ID: 5858-7W <br /> Descr/Location: MW-5 Recd Date: 06/27/2003 <br /> Sample Date: 06/25/2003 Prep Date: 07/02/2003 <br /> Sample Time: 1510 Analysis Date: 07/02/2003 <br /> Matrix: Water QC Batch: VWMS-7023 <br /> Basis: Not Filtered Notes: DF <br /> Analyte Det Limit Rep Limit Note Result Units Pvc Dil <br /> Methyl-tert-butyl ether(MTBE) 1.445 2.5 MRL ND UG/L 5 <br /> Ethyl tent-butyl ether(ETBE) 0.42 2.5 MRL ND UG/L 5 <br /> tert-Amyl methyl ether(TAME) 0.335 25 MRL ND UG/L 5 <br /> Di-isopropyl ether(DIPE) 0.775 2.5 MRL ND UG/L 5 <br /> tert-Butyl alcohol (TBA) 43.95 100. MRL ND UG/L 5 <br /> 1,2-Dichloroethane 0.405 25 MRL 40 UG/L 5 <br /> 1,2-Dibromoethane 1 0.46 25 MRL ND UG/L 5 <br /> SURROGATE AND INTERNAL STANDARD RECOVERIES: <br /> Toluene-d8 76-129 SLSA 98.5% 1 <br /> 1,2-Dichloroethane-d4 53-141 SLSA 92.5% 1 <br /> DF: Reporting limits elevated due to matrix interferences <br /> Approved by: . !�U 3 Date: ( O 3 <br />