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QpJQRepOrt M . M M M I M e . <br /> Matrix Spike/Duplicate Matrix Spike Summary <br /> Castle Analytical Laboratory, Atwater, CA <br /> Lab Report No.: H4072613 Date: 08/05/2004 Page: 3 <br /> QC'Batch: VWMS-8044 Project Name: Lab Generated or Non COE Sample <br /> Matrix: Water Project No.: Lab Generated or Non COE Sample <br /> Lab Samp ID: VWMS-8044 Field ID: Lab Generated or Non COE Sample <br /> Basis: Not Filtered Lab Ref ID: 7219-2WQ <br /> Acceptance <br /> Analysis Spike Level Sample Spike Result % Recoveries Criteria <br /> Analyte Method MS DMS Result MS DMS Units MS DMS RPD % Rec RPD <br /> 1,2-Dibromoethane 8260FA 2.50 2.50 ND 2.62 2.73 UG/L 105 109 3.7 129-67 MSA 13MSP <br /> 12-Dichloroethane 8260FA 2.50 2.50 7.72 9.52 9.32 UG/L 720 64.0 12 138$4 MSA 17MSP <br /> DI-Isopropyl ether(DIPF) 8260FA 2.5 2.5 0.14 3.45 3.39 UG/L 1321 130 1.5 131-70 MSA 28MSP <br /> Ethyl tert-butyl other(ETBE) 8260FA 2.50 2.50 ND 2.88 2.87 UG/L 115 115 0.00 131-72 MSA 26MSP <br /> Methyl-tert-butyl ether(MTBE) 8260FA 2.50 2.50 1.10 3.69 3.74 UG/L 104 106 1.9 13760 MSA 31 MSP <br /> tert-Amyl methyl ether(TAME) 82WFA 2.5 2.5 U1 3.04 3.04 UGIT. 113 113 0.00 119-722 MSA 25MSP <br /> tert-Buy alcohol(TBA) 8260FA 75.0 75.0 ND 91.06 90.74 UG/L 121 121 0.00 15365 MSA 53MSP <br /> 1,2-Dichioroethane-d4 8260FA 100. 100. 10x9 100.8 106.0 [PERCENT 101 106 4.8 135-69 SMSA 20SMSP <br /> Toluene-& 8260FA 100. 100. 1024 96.4 96.5 PERCENT 96.4 96.5 0.10 132-63 SMSA 20SMSP <br />