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• o <br /> Castle Analytical Laboratory, Atwater, CA <br /> Lab Report No.: H3092618 Date: 10/07/2003 page: 2 <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 ID: MW-1 Lab Samp ID: 6164.1W <br /> Descr/Location: MW-1 Recd Date: 09/29/2003 <br /> Sample Date: 09/25/2003 Prep Date: 10/04/2003 <br /> Sample Time: 1526 Analysis Date: 10/04/2003 <br /> Matrix: Water OC Batch: VWMS-0043 <br /> Basis: Not Filtered Notes: BH <br /> Analyte Det Limit Rep Limit Note Result Units Pvc Dil <br /> Methyl-tert-butyl ether(MTBE) 14.5 25, MRL 110a UG/L 50 <br /> Ethyl tert-butyl ether(ETBE) 4.20 25. MRL ND UG/L 50 <br /> tert-Amyl methyl ether(TAME) 3.35 25. MRL ND UG/L 50 <br /> Di-isopropyl ether(DIPE) 7.75 25. MRL ND UG/L 50 <br /> tert-Butyl alcohol (TBA) 440. 1000. MRL ND UG/L 50 <br /> 1,2-Dichloroethane 4.05 25. MRL 54a UG/L 50 <br /> 1,2-Dibromoethane 4.60 25. MRL 25Q UG/L 50 <br /> SURROGATE AND INTERNAL STANDARD RECOVERIES: <br /> Toluene-d8 76-129 SLSA 94.1% 1 <br /> 1,2-Dichloroethane-d4 53-141 SLSA 90.7% 1 <br /> BH: Reporting limits raised due to high level of non-target analytes <br /> • <br /> Approved by: Date: U <br />