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IS <br />Inorganics QC Report for Sample Log 13550 (cont`d) <br />From Beacon 610 (Project # 94-610-01) <br />Sample Duplicate 13550-04 (Alk), 13550-05 (pH), 13550-01 (TDS), <br />Sample Spiked for MS/MSD 13550-01 (NO3, NO2), 13550-02 (SO4) <br />Sample and Sample Duplicate <br />December 26, 1995 <br />Sample EPA Date <br />Analyte Sam le Duplicate RPD Method Analyzed <br />Alkalinity as CaCO3 550 550 0 3101 12/12/95 <br />pH 74 74 0 1501 12/11/95 <br />Total Dissolved Solids 570 570 0 1601 12/14/95 <br />Matrix Spikes <br />MS MSD EPA Date <br />Analyte % Recov % Recov RPD Method Analyzed <br />Nitrate as N 93 98 5 3533 12/12/95 <br />Nitnte as N 92 93 1 3533 12/11/95 <br />Sulfate 106 108 2 3754 12/13/95 <br />MS = Matrix Spike MSD = Matrix Spike Duplicate RPD = Relative Percent Difference <br />Spike Recovery Limits for Matrix Spikes are 75 - 125% RPD Limits are t 20% <br />NA = Not applicable or not available <br />Michelle L An erson <br />Inorganics Supervisor <br />