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TABLE 2-4 <br /> CONSTITUENTS EXCEEDING CONCENTRATION LIMITS <br /> SECOND QUARTER 2006 <br /> FORWARD UNIT <br /> Well ID Constituent Sample Result Concentration Concentration <br /> Limit Basis LImit <br /> MW-01B Chromium Hexavalent 0.0062 PQL 0.0020 <br /> Tetrachloroethene 0.60 PQL 0.50 <br /> A enc 5.0035 POT 0.0020 <br /> MW-03B Arsenic 0.0028 PQL 0.0020 <br /> Chromium Hexavalent 0.0062 PQL 0.0020 <br /> MW-10 Arsenic 0.0028 PQL 0.0020 <br /> Bicarbonate 310 UTL 220 <br /> Chromium Hexavalent 0.0045 PQL 0.0020 <br /> MW-13 Arsenic 0.0023 PQL 0.0020 <br /> Bicarbonate 820 UTL 675 <br /> Chromium Hexavalent 0.0028 PQL 0.0020 <br /> Sodium 84 CLBG 82 <br /> Sulfate 39 UTL 32 <br /> MW-14 Arsenic 0.0048 PQL 0.0020 <br /> Bicarbonate 1000 UTL 785 <br /> Chromium Hexavalent 0.0041 PQL 0.0020 <br /> MW-15 Bicarbonate 370 UTL 355 <br /> Chromium Hexavalent 0.0034 PQL 0.0020 <br /> MW-16 Barium 0.57 BL 0.34 <br /> Bicarbonate 730 BL 510 <br /> Magnesium 74 BL 68 <br /> Strontium 1.7 BL 1.6 <br /> Total Dissolved Solids 960 BL 940 <br /> MW-17 Sodium 58 UTL 42 <br /> Sulfate 93 UTL 67 <br /> RV 8 Sulfate 70 <br /> MW-19 Bicarbonate 570 BL 510 <br /> Calcium 200 UTL 140 <br /> Chloride 210 UTL 140 <br /> Chromium Hexavalent 0.0042 PQL 0.0020 <br /> Magnesium 84 UTL 66 <br /> Sodium 180 UTL 54 <br /> Strontium 1.8 BL 1.6 <br /> Sulfate 510 UTL 67 <br /> Total Dissolved Solids 1600 BL 940 <br /> MW-21 Banum 0.39 NE 0. <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 Kdeinfelder,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-23R. Mean+(2.375 x Standard Deviation). <br /> ALF 2Q66 T.W9.xU24 CL <br />