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Castle Analytical Laboratory, Atwater, CA <br /> Lab Report No.: M4032502 Date: 04/x2/2004 Page: 3 <br /> Project Name: OILIVAREZ PROPERTY Analysis: Volatile Organic Compounds by GC/MS Fuel <br /> Project No: NA Method: 8260FA <br /> Prep Meth: SW5030B <br /> Field ID: MW-1R Lab Samp ID: 6797-2W <br /> Descr/Location: MW-1 R Recd Date: 03/25/2004 <br /> Sample Date: 03/23/2004 Prep Date: 03/31/2004 <br /> Sample Time: 1245 Analysis Date: 03/31/2004 <br /> Matrix: Water OC Batch: VWMS-3314 <br /> Basis: Not Filtered Notes: OF <br /> Analyte Det Limit Rep Limit Note Result Units Pvc Oil <br /> Methyl-tert-butyl ether(MTBE) 28.9 50. MRL NO UG/L 100 <br /> Ethyl tert-butyl ether(ETBE) 8.40 50. MRL NO UG/L 100 <br /> tert-Amyl methyl ether(TAME) 6.70 50. MRL NO UG/L 100 <br /> DI-isopropyl ether(DIPS) 15.5 50. MRL NO UGIT_ 100 <br /> tent-Butyl alcohol (TBA) 879. 2000. MRL NO UG/L 100 <br /> 1,2-Dichloroethane 8.10 50. MRL NO UGIL 100 <br /> 1,2-Dibromoethane 9.20 50. MRL NO UG/L 100 <br /> SURROGATE AND INTERNAL STANDARD RECOVERIES: <br /> Toluene-d8 76-129 SLSA 124% 1 <br /> 1,2-Dichloroethane-d4 53-141 SLSA 93.1% 1 <br /> DF: Reporting limits elevated due to matrix interferences <br /> Approved by: '"" Date: 2-ID !� __ <br />