Audio 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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