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Table 2.2 Detection Monitoring Results and Compliance Summary Austin Road Landfill AOW-2 AMI -6 AMW-7 AMW-12 AMW-13 AMW-14 Anal e Units Concentration Limit MDL 11/5/07t 11/7/07 11/7/07 11/6/07 11/6/07 11/6/07 Field Parameters H DH units 1 6.592-8.333 - 7.15 6.93 7.37 6.74 6.62 6.60 Specific Conductance mbos/cm 1436 - 654 368 432 667 802 663 Temperature °C 21.47 - 18.8 18.4 19.8 18.2 18.6 18.8 Turbidity NTU 97 - <1 <1 <1 <1 <1 <1 Monitoring Parameters Arsenic m L 0.007341 - 0.0035 0.0040 0.0038 0.0041 0.0034 0.0029 Barium m L 0.2454 - 0.092 0.14 0.19 0.22 0.29* 0.23 Bicarbonate m L 511.1 - 310 170 190 350 440 320 Calcium m L 145.2 - 64 38 42 71 88 71 Carbonate m L 12 - <3.0 <1.5 <1.5 <3.0 <3.0 <3.0 Chloride m L 78.94 - 30 37 42 40 1 50 53 Chromium,Hexavalent m L 0.005 - 0.0044 0.0048 0.0056* 0.0022 0.0024 0.0019 MaE2esiurn m L 67.18 - 31 18 20 33 47 36 Nitrate as N m L 76.8 - 15 2.8 6.0 10 12 10 Oil and Grease m L 5 - <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 Potassium m L 11.19 - 7.3 6.1 8.4 4.1 6.9 5.2 Sodium m L 79.74 - 53 23 28 50 49 43 Strontium m L 1411 - 0.69 0.39 0.59 0.77 0.98 0.8 Sulfate m L 152 - 59 26 24 51 62 51 Total Dissolved Solids m L 994.2 - 540 340 380 530 500 560 Volatile Petroleum Hydrocarbons ugZL 25 - <50 <50 <50 <50 <50 11J Volatile Organic Compounds 1,1-Dichloroethane u L Detect 0.11 <0.50 <0.50 <0.50 <0.50 0.28J 0.12J cis-1,2-Dichloroethene u L Detect 0.11 <0.50 <0.50 <0.50 <0.50 0.60* <0.50 Dichlorodifluoromethane u L Detect 0.11 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 Tetrachloroethene u L Detect 0.11 <0.50 0.28J <0.50 0.22J 12* 16* Trichloroethene I u L Detect 0.13 <0.50 <0.50 <0.50 <0.50 3.8* 1.4* JDenotes detections above the method detection limit but below the reporting limit. *Denotes a downgradient value exceeding the concentration limit. t Denotes the sampling date.