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TABLE 2-4 CONSTITUENTS EXCEEDING CONCENTRATION LIMITS SECOND QUARTER 2009 FORWARD UNIT Well ID Constituent Sample Result Concentration Concentration Limit Basis Limit MW-01A Bicarbonate 670 UTL 390 Calcium 130 CLGB 110 Chloride 140 CLGB 97 Chromium Hexavalent 0.0076 PQL 0.0020 Magnesium 68 CLGB 54 Sodium 94 CLGB 63 Total Dissolved Solids 800 CLGB 800 A Arsenic 0.0024 0.0020 MW-03A Arsenic 0.0026 PQL 0.0020 Bicarbonate 500 UTL 340 Calcium 110 CLGB 91 Chloride 95 CLGB 94 Chromium Hexavalent 0.0074 PQL 0.0020 Magnesium 51 CLGB 44 Sodium 68 CLGB 57 Total Dissolved Solids 720 CLGB 600 MW-10 Arsenic 0.0035 PQL 0.0020 Bicarbonate 300 UTL 220 Chromium Hexavalent 0.0031 PQL 0.0020 MW-13 Arsenic 0.0029 PQL 0.0020 Barium 0.55 CLGB 0.52 Bicarbonate 830 UTL 675 Sodium 85 CLGB 82 Sulfate 43 UTL 32 Total Dissolved Solids 940 CLGB 880 MW-14 Arsenic 0.0025 PQL 0.0020 Bicarbonate 1100 UTL 785 Chromium Hexavalent 0.0034 PQL 0.0020 Magnesium 100 CLGB 95 Total Dissolved Solids 1200 CLGB 1100 MW-15 Bicarbonate 410 UTL 355 Chromium Hexavalent 0.0039 PQL 0.0020 MW-16 Barium 0.63 BL 0.32 Bicarbonate 780 BL 529 Magnesium 82 BL 68 Potassium 9.2 BL 9.0 Strontium 1.7 BL 1.6 MW-17 Calcium 100 UTL 89 Sulfate 76 UTL 67 Chloromethane 0.99 PQL 0.50 MW-18 Arsenic 0.0034 PQL 0.0020 Chromium Hexavalent 0.0034 PQL 0.0020 Sulfate 72 UTL 69 Chloromethane 0.81 PQL 0.50 MW-2 I Bicarbonate 680 BL 529 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 2Q09 Tabl...1,244 CL