Table 5 - 14 in Saidabad Water Treatment Plant Project, Phase III

Table 5-14: Summary of daytime noise level measurement in the project area (Original Table 24) SL. No.GPS CoordinateTimeLocationNoise Level (dBA)(dd mm ss)May-22Nov-13LatitudeLongitudeLMAXLMIN1 min-LeqLMAXLMIN1 min-Leq123 39 35.390 37 49.2DayProposed Intake Point at Haria53.344.747.667.554.258.3223 39 40.390 37 39.5DayLichu Garden62.941.647.351.743.947.71323 39 09.290 34 47.1DayDhaka-Chittagong Highway Crossing89.162.985.286.468.778.2423 39 30.190 34 14.5DayOld Brahmaputra (Langalbandh Bridge)90.852.379.389.865.577.4523 41 24.390 32 48.4DayMadan Bus Station96.969.783.483.965.274.7623 42 20.390 31 23.3DayKanchpur Circle83.961.277.582.768.675.6723 41 52.590 30 33.2DayChattogram Road Bus Stand88.168.979.1823 43 09.490 29 26.5DayStaff Quarter (DND Canal)91.668.480.7103.669.286.4923 42 49.390 27 09.7DayMiddhabari Sluice Gate66.157.262.162.853.857.31023 43 15.390 26 10.8DaySWTP III Site57.346.754.366.245.553.5 [Note: The equivalent level is the level (Leq) of a hypothetical steady sound that would have the same energy (i.e., the same time-averaged mean square sound pressure) as the actual fluctuating sound observed. The equivalent level represents the time average of the fluctuating sound pressure and is close to the maximum level observed during the measurement period. For the fluctuating noise scenario, the equivalent noise level (Leq) is generally used for more complete noise sample and is calculated as follows: [n] L =10log Ʃ P 10L i /10 eq 10 | i | L i =1] Where, Pi is the probability of the noise level lying in the i-th measurement interval and Li is the mid- point of that interval.]