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TABLE 2-4 CONSTITUENTS EXCEEDING CONCENTRATION LIMITS FOURTH QUARTER 2008 FORWARD UNIT Well ID Constituent Sample Result Concentration Concentration Limit Basis Limit MW-01A Bicarbonate 650 UTL 390 Calcium 140 CLGB 110 Chloride 180 CLGB 97 Chromium Hexavalent 0.0047 PQL 0.0020 Magnesium 70 CLGB 54 Sodium 93 CLGB 63 Sulfate 89 UTL 84 Total Dissolved Solids 940 CLGB 800 M - A Bicarbonate 910 MW-03A Bicarbonate 480 UTL 340 Calcium 96 CLGB 91 Chromium Hexavalent 0.0056 PQL 0.0020 Magnesium 48 CLGB 44 Sodium 68 CLGB 57 Total Dissolved Solids 610 CLGB 600 MW-10 Arsenic 0.0036 PQL 0.0020 Bicarbonate 310 UTL 220 MW-13 Barium 0.57 CLGB 0.52 Bicarbonate 880 UTL 675 Sodium 91 CLGB 82 Strontium 1.7 CLGB 1.6 Sulfate 42 UTL 32 Total Dissolved Solids 980 CLGB 880 MW-14 Arsenic 0.0023 PQL 0.0020 Bicarbonate 990 UTL 785 Chromium Hexavalent 0.0046 PQL 0.0020 Tetrachloroethene 0.56 PQL 0.50 MW-IS Bicarbonate 450 UTL 355 Chromium Hexavalent 0.0025 PQL 0.0020 MW-16 Barium 0.59 BL 0.32 Bicarbonate 810 BL 531 Magnesium 76 BL 68 Strontium 1.7 BL 1.6 MW-17 Calcium 110 UTL 89 Magnesium 49 UTL 47 Sulfate 75 UTL 67 MW-18 Arsenic 0.0031 PQL 0.0020 Chromium Hexavalent 0.0045 PQL 0.0020 M - 9 mium Rexavalent 6.6026 PQL 0.0020 MW-21 Barium 0.33 BL 0.32 Bicarbonate 590 BL 531 Notes: CLGB=Concentration Limit Greater Than Background. CLGB=Taken from Table 5-12 of Revised Post-Closure Maintenance Plan,Forward Landfill,by Kleinfelder,dated 11/2/94. UTL=Upper Tolerance Limit. UTL=Taken from Table 5-14 of Revised Post-Closure Maintenance Plan,Forward Landfill,by Kleinfelder,dated 11/2/94. PQL=Practical Quantitation Limits. BL=Background Limit derived from historical data at MW-20 and MW-23R. Mean+(2.375 x Standard Deviation). FLF 4Q08 Tables.xls24 CL