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TABLE 2-4 <br /> ® CONSTITUENTS EXCEEDING CONCENTRATION LIMITS <br /> THIRD QUARTER 2006 <br /> FORWARD UNIT <br /> Well ID Constituent Sample Result Concentration Concentration <br /> Limit Basis Limit <br /> MW-01 Bicarbonate 730 UTL 390 <br /> Calcium 170 CLGB 110 <br /> Chloride 170 CLGB 97 <br /> Magnesium 83 CLGB 54 <br /> Potassium 8.7 CLGB 8.6 <br /> Sodium 100 CLGB 63 <br /> Sulfate 150 UTL 84 <br /> Total Dissolved Solids 1200 CLGB 800 <br /> MW-02A Arsenic 0.0022 PQL 0.0020 <br /> Sul to 46 UTL 45 <br /> MW-03 Barium 0.0030 CLGB 0.24 <br /> Bicarbonate 550 UTL 340 <br /> Calcium 120 CLGB 91 <br /> Chloride 120 CLGB 94 <br /> Chromium VI 0.0033 PQL 0.0020 <br /> Magnesium 58 CLGB 44 <br /> Sodium 86 CLGB 57 <br /> Sulfate 70 UTL 62 <br /> Total Dissolved Solids 950 CLGB 600 <br /> MW-10 Arsenic 0.0021 PQL 0.0020 <br /> Bicarbonate 300 UTL 220 <br /> MW-13 Arsenic 0.0021 PQL 0.0020 <br /> Barium 0.57 CLGB 0.52 <br /> Bicarbonate 1000 UTL 675 <br /> Calcium 170 CLGB 150 <br /> Magnesium 85 CLGB 77 <br /> Sodium 97 CLGB <br /> Strontium 1.8 CLGB 1.1.6 <br /> Sulfate 39 UTL 32 <br /> Total Dissolved Solids 1000 CLOB 880 <br /> MW-14 Arsenic 0.0021 PQL 0.0020 <br /> Bicarbonate 940 UTL 785 <br /> Chromium VI 0.0023 PQL 0.0020 <br /> Tetrachloroethylene 0.60 L 0.50 <br /> Total Disso ved o ids 1200 LGB 1100 <br /> MW-15 Bicarbonate 460 UTL 355 <br /> Chromium VI 0.0021 PQL ------0-0-620 <br /> MW-16 Barium 0.59 BL 0.33 <br /> Bicarbonate 810 BL 510 <br /> Strontium 1.7 BL 1.6 <br /> MW-17 Barium 0.5 UTL 0.37 <br /> Calcium 110 UTL 89 <br /> Sodium 50 UTL 42 <br /> MW-18 Arsenic 0.0029 PQL 0.0020 <br /> Bromoform 1.8 L 0.50 <br /> Chromium VI 0.0049 PQL 0.0020 <br /> Dibromochloromethane 0.63 PQL 0.50 <br /> u to 73 UTL 69 <br /> MW-19 Bromoform 1.8 L 0.50 <br /> Dibromochloromethane 0.70 NL 0.56 <br /> MW-21 Barium 0.47 BL 0.33 <br /> Bicarbonate 1000 BL 512 <br /> Magnesium 71 BL 68 <br /> Notes: <br /> CLGB=Concentration Limit Greater Than Background. <br /> CLGB=Taken from Table 5-12 of Revised Post-Closure Maintenance Plan,Forward Landfill,by Kleinfelder,dated 11/2/94. <br /> UTL=Upper Tolerance Limit. <br /> UTL=Taken from Table 5-14 of Revised Post-Closure Maintenance Plan,Forward Landfill,by Kleinfelder,dated 11/2/94. <br /> PQL=Practical Quantitation Limits. <br /> BL=Background Limit derived from historical data at MW-20 and MW-231L Mean+(2.375 x Standard Deviation). <br /> Geologic Associates <br />