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Inorganic Concentration Limits vs. Third Quarter 2006 Sampling Event Results <br /> Forward Landfill <br /> MW-01 MW402A MW-03 MW-10 <br /> Parameter Aug-06 CLGB UTL BL PQL Au -06 CLGB UTL BL PQL Aug-06 CLGB UTL BL PQL Au CLGB UTL BL PQL <br /> Arsenic 0.0017 0.01 0.0022 0.0020 0.0015 0.0020 0.0021 0.0020 <br /> Barium 0.15 0.31 0.27 0.85 0.25 0.24 0.21 0.22 <br /> Bicarbonate 730 390 840 880 550 340 300 220 <br /> Chromium,Hexavalent <0.0020 0.0020 <0.0020 0.0020 0.0033 0.0020 <0.0020 0.0020 <br /> Magnesium 83 54 72 98 58 44 29 42 <br /> Nitrate 2.4 80 3.5 80 13 80 4.6 32 <br /> Sulfate 150 84 46 45 70 62 39 48 <br /> Total Dissolved Solids 1200 800 860 1300 850 600 460 575 <br /> All concentrations are provided in mg/L. <br /> CLGB-Concentration Limit Greater Than Background(Impact Constituents only). See Table 5-12 of Revised Post-Closure Maintenance Pian(11/2/94). <br /> UTL-Upper Tolerance Limit. See Table 5-15 of Revised Post-Closure Maintenance Plan(11/2/94). <br /> BL-Background Limit. Determined from historical data at MW-20 and MW-23R. (Mean+[2.375 x Standard Deviation]) <br /> PQL-Practical Quantitation Limit from current laboratory report. <br /> 647-August 2006 concentration exceeds the CLGB,UTL,BL,or PQL. <br /> Page 1 of 4 <br />