Padma Multipurpose Bridge Project

Location Date TimeMea Med Max Min Std L 10 L 90 L 50 L eqdBA dBA dBA dBA dBA dBA dBA dBA dBAKandigramSA2 (AQJ - 1) 17/11/2009 21:02-21:17 42.0 41.5 48.5 37.8 3.0 38.6 47.3 41.2 43.5Gomostakandi 11:52 - 12:07 42.1 40.4 63.5 36.2 6.8 36.5 47.3 40.3 52.216/11/2009(AQJ - 2) RS419:00 - 19:15 40.5 39.7 60.1 33.1 7.0 33.6 45.6 38.8 50.6Sikderkandi-11:50 - 12:05 57.0 54.4 73.2 44.6 8.9 47.5 72.5 53.8 65.7Panchchar(Approach Road17/11/200919:37 - 19:54 54.0 51.8 72.6 43.8 7.8 46.4 63.3 51.3 63.2End)Kewrakandi17:50 -18:05 68.4 68.0 77.3 60.2 5.2 61.4 75.7 67.4 71.3Ferryghat(AQJ - 4)17:11/200920:30 -20:45 66.7 67.4 74.5 60.2 4.7 60.3 71.9 67.0 68.8Bakhorerkandi12:40 - 12:57 55.7 55.9 64.5 46.0 5.8 47.2 60.2 55.4 58.8(RS5)(Chairman17/11/200919:10 - 19:25 51.8 51.8 65.2 41.0 6.1 42.5 58.9 51.3 56.2Office)Notes:(a) Hydraulic horn in useSource: The Consultant Environmental Quality Monitoring, November 20093.3.3 Surface Water Quality93. The surface water samples from the Padma, Naodoba River and ponds near theresettlement sites were collected during July 7-9, 2009 for water quality analysis. The results of theanalysis are shown in Table 3-30. Drinking water quality standards of Bangladesh are also provided inthe Table. High concentrations of total coliform and fecal coliform are observed in the surface water.The reasons for high level of coliform is mainly due to (i) carrying of liquid and solid waste includinghuman excreta by the rain and flood plain waters, (ii) poor sanitation facilities near the bridge landingsites, and (ii) washing and bathing in the ponds.Table 3-30: Surface Water Quality in the Project Area, July 2009Padma RiverStreams, Canals and PondsParameter UnitBLS: BLS:NaodobaRS2 RS3 RS4 RS5 SA1 SA2 CY1 CY2Mawa JanjiraKhalpH — 7.76 7.59 7.3 7.29 7.32 7.37 6.89 7.29 7.73 7.17 7.64TDS mg/I 93 118 178 156 130 95 145 173 94 138 123TSS mg/I 966 580 26 13 6 12 9 8 895 67 78EC at 25 0 µS/cm 131 149 306 292 165 135 206 259 127 172 158Chloride (CI-) mg/I 6 7 20 10 5 4 12 17 2 9 8NH3-N mg/I 0.58 0.389 0.331 0.334 0.253 0.465 0.345 0.319 0.306 0.481 0.557Fe mg/I 0.52 0.27 0.02 0.07 0.05 0.14 0.06 0.04 0.32 0.23 0.34As mg/I 0.002