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Inorganic Concentration Limits vs. Third Quarter 2007 Sampling Event Results <br /> Forward Landfill <br /> MW-01A MW-02A MW-03A MW-10 <br /> Parameter Aug-07 CLGB UTL BL I PQL Aug-07 CLGB UTL BL PQL Aug-07 CLGB UTL BL PQL Aug-07 CLGB UTL BL PQL <br /> Arsenic 0.0031 0.01 0.0015 0.0020 0.0023 0.0020 0.0031 0.0020 <br /> Barium 0.15 0.31 0.25 0.85 0.21 0.24 0.21 0.22 <br /> Bicarbonate 740 390 820 880 510 340 300 220 <br /> Chromium,Hexavalent 0.0089 0.0020 0.0018 0.0020 0.0054 0.0020 0.0025 0.0020 <br /> Magnesium 84 54 75 98 53 44 29 42 <br /> Nitrate 2.1 78 3.6 78 12 78 4.0 32 <br /> Sulfate 150 84 55 45 66 62 40 48 <br /> Total Dissolved Solids 1100 800 800 1300 800 600 380 575 <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 Plan(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 2007 concentration exceeds the CLGB,UTL,BL,or PQL. <br /> NS-Geo-Logic Associates reported that monitoring well MW-23R was dry during the August 2007 and could not be sampled. <br /> is <br /> P! of 4 kRSTIOSOCIATES, INC <br />