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i ►�uanferra <br /> Envtmninenra! <br /> Sernces <br /> DUPLICATE CONTROL SAMPLE REPORT <br /> Air Toxics <br /> Project 095091 <br /> Category RSKSOP175G Dissolved Gases in Water by GC <br /> Matrix: AQUEOUS <br /> QC Lot 23 SEP 97-AIE Date Analyzed 23 SEP 97 <br /> ' Concentration Units mg/L <br /> Concentration Acceptance <br /> Spiked Measured %Recovery RPD Limits <br />' Analyte DCS1 DCS2 DCS1 DCS2 Recov. RPD <br /> Methane 0.326 0 390 0.372 119 114 4 7 40-160 30 <br /> Carbon dioxide 71 B 76 9 74 1 107 103 3 7 40-160 30 <br /> 1 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results <br />