The study will evaluate the impact of voice volume formed by drilling activity, the activity with the highest volume. The sound source from drilling. According to the results of drilling at the base volume L53G-N3 during 29 March - 1 April 2013 found that 24-hour average sound level (Leq 24 hrs), with values ranging from 57.4 to 58.5 dB (A. ) and the maximum noise level (Lmax) is in the range of 67.6 to 95.7 dB (A).
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