Impact on Noise Environment and Mitigation Measures. Noise values were in the range prescribed by pollution control board. With these values we can say that there will be no significant impact on environment. The following control measures will be adopted to keep the ambient noise levels well below the limits: ⮚ Drilling will be carried out with the help of sharp drill bits which will help in reducing noise. ⮚ Controlled blasting will be done to minimize noise, ground vibration, fly rock and air overpressure. ⮚ Proper maintenance, oiling and greasing of machines at regular intervals will be done to reduce generation of noise. ⮚ Confining the noise generating sources. ⮚ In order to reduce the effect of noise pollution, ear plugs /earmuffs will be provided to . all employees. ⮚ Green belt development around infrastructure and mine areas etc would minimize the adverse impacts likely to arise out of mining operations. In the proposed scheduled afforestation programme, adequate plantation will be done along the periphery of the mines area to attenuate noise. It is very well established that a tree-shrub-grass combination of plantation may attenuate ⮚ Sound by about 12dB. Tall evergreen trees, would provide a sound screen and also prevent dust dispersion. Plants with fleshy leaves and other with branches / dense foliage in uniform vertical distribution would mask and absorb noise. Such measures for afforestation expected to curb high-level noise at the source point would be objectively undertaken. ⮚ Periodical noise level monitoring will be done.
