3.1.3.2 environmental impact assessment
1). Construction of the stage
sounds 1.1). When you consider the volume forecast from the machine that is the origin of all types. I found that there are 200 m, 10-stage volume is between 54-105 DB (a). (Although in practice it happens very little.) The total volume was found to range 10-200 m between 81.7-NN107D7 DB (a) indicates that the volume is reduced by the increase in mileage as well.
. From these predictions conclude that residents near the project area will be affected by the noise levels from the machinery of origin for all types of travel, at the same time (although in practice it happens very little.) 115 DB (a) as announced by the national environment Board issue (PT. 15.Prof. 2540 (1997)) found that the value returned by evaluating the benchmark lower.
. Because of the way the construction activities will be conducted continuously 24 hours a day, the construction activity is causing intermittent sound and occurs in a short time. That is, it occurs only in the range of 8 times.00-NN17 am. Therefore it is expected that the impact occurred, it is the smallest level (-1) However, the project has established measures to prevent and reduce the impact of the noise as well.
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