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A <br /> �S} <br /> Quality Assurance Report <br /> MTBE by GC/MS in Water <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch B001060-EPA 5030 GCIMS <br /> Blank(B001060-BLK1) Prepared&Analyzed 05/18/06 <br /> Methyl tert-Butyl Ether (MTBE) ND 1 0 µg/L <br /> Surrogate Dibromofluoromethane 219 µg/L 200 110 70-130 <br /> Surrogate Toluene-d8 209 µg/L 200 104 70-130 <br /> Surrogate 4-Bromofluorobenzene 199 Ug/L 200 100 70-130 <br /> Matrix Spike B001060-MSI) Source 6051714-01 Prepared 05/18/06 Anal ed 05/19/06 <br /> 1,1-Dichloroethene(1,1-DCE) 240 10 4g/L 250 ND 96 70-130 <br /> Benzene 23 7 10 µg/L 250 ND 95 70-130 <br /> Trichloroethene(TCE) 240 10 µg/L 250 ND 96 70-130 <br /> Toluene 23 8 10 µg/L 250 ND 95 70-130 <br /> Chlorobenzene 23 6 10 pg/L 250 ND 94 70-130 <br /> Surrogate Dibromofluoromethane 213 µg/L 200 106 70-130 <br /> Surrogate Toluene-d8 209 µg/L 200 104 70-130 <br /> Surrogate 4-Bromofluorobenzene 191 µg/L 200 96 70-130 <br /> Matrix Spike Dup(B001060-MSD1) _ Source 6051714-01 Prepared 05/18/06 Analyzed 05/19/06 <br /> 1,1-Dichloroethene(1,1-DCE) 23 9 10 µg/l, 250 ND 96 70-130 0 20 <br /> Benzene 242 1 0 µg/L 250 ND 97 70-130 2 20 <br /> Trichloroethene(TCE) 24 1 1 0 pg/L 250 ND 96 70-130 0 20 <br /> Toluene 242 10 pg/L 250 ND 97 70-130 2 20 <br /> Chlorobenzene 23 7 1 0 lµg/L 250 ND 95 70-130 1 20 <br /> Surrogate Dibromofluoromethane 218 Ng/L 200 109 70-130 <br /> Surrogate Toluene-d8 213 pg/L 200 106 70-130 <br /> Surrogate 4-Bromafluorobenzene 188 lig/L 200 94 70-130 <br /> Page 3 of 4 <br /> Lab Project# 605I720 CA Lab Accreditation# 2303 <br />