Distance(m)   Noise Attenuation (dB(A)) Predicted Noise Levels (dB(A))
          Ngong Ping (B)   Ngong Ping   Ngong Ping (C)  
    Village Village Village Village Village Village Village Village Village
  (A) House A House B House C House A House B House C House A House B House C
        SWL NSR1 NSR2 NSR3 NSR1 NSR2 NSR3 NSR1 NSR2 NSR3
Noise Impacts at Ngong Ping                  
Stream Diversion (w/ Rock Breaking) 122 28 n/a n/a 37 n/a n/a 88 n/a n/a
Stream Diversion (w/o Rock Breaking) 112 n/a 12 6 n/a 30 24 n/a 85 91
         
      Total 88 85 91
                           
Note(s):
1. Bold figure exceeds noise criteria
2. N.A. denotes Not Applicable
3. Façade effect is considered for all NSRs
4. Noise levels (C) = SWL (A) - Noise Attenuation {20*log [Distance(B)] -8} + façade effect