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Table 2.2 Detection Monitoring Results and Compliance Summary Austin Road Landfill AMW-2 AMW-6 AMW-7 AMW-12 AMW-13 AMW-14 Analyte Units Concentration Limit TMDL 8/11/08° 8/13/08 8/13/08 8/12/08 8/12/08 8/12/08 Field Parameters H pH units 6.611-8.324 7.06 7.24 7.65 7.23 7.03 7.06 Specific Conductance µmhos/cm 1442 1160 405 452 557 783 730 Temperature "C 21.37 - 19.2 19.0 20.2 18.5 19.0 18.6 Turbidity NTU 97 - <l <1 <1 <t <t <1 Monitoring Parameters Arsenic mg/L 0.007152 - 0.0032 0.0052 0.0046 0.0059 0.0035 0.0030 Barium mg/L 0.242 - 0.14 0.15 0.19 0.16 0.26* 0.23 Bicarbonate mg/L 510.6 - 440 180 210 290 390 310 Calcium mg/L 147.8 - 100 39 46 55 81 75 Carbonate mg/L 12 - <3.0 <1.5 <3.0 <3.0 <3.0 <3.0 Chloride mg/L 78.3 - 54 38 43 30 52 67 Chromium,Hexavalent mg/L 0.005 - 0.0039 0.0055* 0.0060* <0.0020 0.0044 0.0037 Magnesium mg/L, 65.83 - 52 19 22 26 44 38 Nitrate as N mg/L 76.8 - 31 2.5 6.2 6.3 13 12 Oil and Grease mg/L 5 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 Potassium mg/L 11.01 -- 8.7 6.2 7.5 3.4 6.3 5.4 Sodium mg/L 79.75 66 22 25 1 42 1 44 41 Strontium mg/L 1385 - 1.1 0.42 0.59 0.6 0.92 0.85 Sulfate mg/L 151.1 - Il0 26 1 26 37 59 57 Total Dissolved Solids m L 1018 - 840 320 390 410 600 550 Volatile Petroleum Hydrocarbons ug/L 25 - <50 <50 <50 <50 12J 13J Volatile Organic Compounds Bromofonn ug/L Detect 0.24 1.3* <0.50 1.1* 0.49J <0.50 <0.50 Dibromochloromethane ug/L Detect 0.23 0.46J <0.50 0.81* <0.50 <0.50 <0.50 Dichlorodifluoromethane ug/L Detect 0.22 <0.50 0.39J <0.50 <0.50 <0.50 0.81* Tetrachloroethene ug/L Detect 0.28 <0.50 0.96* <0.50 <0.50 2.7* 15* Trichloroethene ug/L Detect 0.16 <0.50 0.18J <0.50 <0.50 0.26J 1.3* J Denotes detections above the method detection limit but below the reporting limit. *Denotes a downgradient value exceeding the concentration limit. f Denotes the sampling date.