Approved report

4 C D Developments
Environmental Traffic and Rail Noise Level Impact Assessment for Proposed Residential Unit Development,
54 Elm Street and 5 Pearl Street, Cooroy                                                                         Page 22 of 35



From Table 7, the following average ambient noise levels should be noted:

o   LAeq,T:
         o    daytime:    58.2, 58.6, 59.2, 58.8            Average = 58.7 dB(A);
         o    evening:    54.3, 53.6, 55.7, 56.6            Average = 55.1 dB(A);
         o    night-time: 54.8, 54.8, 55.1, 53.5            Average = 54.6 dB(A);

o   LA1,T:
         o    daytime:    66.6, 67.6, 66.6, 67.3            Average = 67.0 dB(A);
         o    evening:    65.4, 63.6, 65.0, 69.0            Average = 65.8 dB(A);
         o    night-time: 67.4, 67.8, 66.9, 66.5            Average = 67.2 dB(A);

o   LA10,T:
         o    daytime:    61.2, 61.5, 62.0, 61.6            Average = 61.6 dB(A);
         o    evening:    58.0, 57.3, 59.6, 58.9            Average = 58.5 dB(A);
         o    night-time: 56.2, 56.2, 57.4, 54.4            Average = 56.1 dB(A);

o   LA90,T:
         o    daytime:    49.0, 49.7, 51.8, 49.6            Average = 50.0 dB(A);
         o    evening:    38.1, 39.4, 42.2, 41.7            Average = 40.4 dB(A);
         o    night-time: 39.0, 38.8, 40.7, 35.9            Average = 38.6 dB(A).


NOISE CONTROL

Traffic Noise Control to Habitable Rooms

For traffic noise control to the Level 1 facades of the residential units Figure 7 details the location and
height of the required acoustic barriers.

For traffic noise control to habitable rooms Table 8 details the Noise Category for each Unit, for Level 1
and Level 2, for each facade.

                                                        Table 8
    Traffic Noise Category For Proposed Residential Units, Level 1 and Level 2, With 2.0 m Acoustic Barriers in Place

                                   Level 1 Noise Category                               Level 2 Noise Category
      Unit
                       West         North         East         South        West          North           East        South

        1                1           N/A           0             1            2            N/A             0            1
        2                0           N/A           0             0            0            N/A             0            0
        3                0            0            0            N/A           0             0              0           N/A
        4                1            0            0            N/A           2             0              0           N/A
        5               N/A           0            0             0           N/A            0              0            0
        6               N/A           0           N/A            0           N/A            1             N/A           0
        7                0            0           N/A            0            0             1             N/A           0
        8               N/A           0            0             0           N/A            1              0            1
        9               N/A           0           N/A            0           N/A            1             N/A           1
       10               N/A           0           N/A            0           N/A            2             N/A           2
       11                1            0           N/A            0            2             2             N/A           2




David Moore & Associates Pty Ltd                                                  Our reference: R21046/D3569/Rev.0/2.07.21