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Excelchem Environmental Labs, Roseville, CA <br />' Lab Report No 0504058 Date 05/11/2005 Page 2 <br />' Project Name CASTLE MOTORS Analysis Volatile Organic Compounds by GC/MS <br /> Project No 7232 Method SW8260B <br /> Prep Meth SW5030 <br />' Field ID MW-101 Lab Samp ID 0504058-07 <br /> Descr/Location MW-101 Rec'd Date 04/14/2005 <br />' Sample Date 04/1312005 Prep Date 04/18/2005 <br /> Sample Time 1000 Analysis Date 04/18/2005 <br /> Matrix Water QC' Batch AOD0058 I <br /> Basis Not Filtered Notes <br /> Analyte Det Limit Rep Limit Note Result Units Pvc Dd <br /> Benzene 05 05 PQL ND UG/L 1 <br />' 1,2-Dibromoethane 05 05 PQL ND UG/L 1 <br /> 1,2-Dichloroethane 05 05 PQL ND UG/L 1 <br /> Ethylbenzene 05 05 PQL ND UG/L 1 <br />' Toluene 05 05 PQL ND UG/L 1 <br /> o-Xylene 05 05 PQL ND UG/L 1 <br /> Methyl-tent-butyl ether(MTBE) 05 05 PQL ND UG/L 1 <br /> Di-isopropyl ether(DIPE) 05 05 PQL ND UG/L 1 <br /> Ethyl tert-butyl ether (ETBE) 05 05 PQL ND UG/L 1 <br /> Gasoline Range Organics 50 50 PQL EB, CO 17R UG/L 1 <br /> tert-Amyl methyl ether(FAME) 05 05 PQL ND UG/L 1 <br /> tert-Butyl alcohol (TBA) 50 50 PQL ND UG/L 1 <br /> Xylene, Isomers m & p 10 10 PQL ND UG/L 1 <br /> SURROGATE AND INTERNAL STANDARD RECOVERIES <br /> 4-Bromofluorobenzene 70-130 SLSA 105% 1 <br /> Toluene-d8 70-130 SLSA 97% 1 <br /> Dibromofluoromethane 70-130 SLSA 102% 1 <br /> EB Value is estimated <br />' CO Hydrocarbon response in gasoline range but does not resemble gas <br /> 1 <br /> 1 <br /> 1 <br />' Approved by _ ____ Date <br />