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 17 of 35



Traffic Noise – Level 1 Facade

As the LA90,8H was less than 40 dB(A) the facade traffic noise limit is 60 dB(A) LA10,18H facade corrected.

At the closest facade to Elm Street Table 3 details the ultimate facade corrected traffic noise level,
taking into account the 1.4 metre deep cut down to Level 1.


                                                   Table 3
 Calculated Ultimate (2031) Traffic Noise Level at Closest Facade of Unit 11, Receptor 1.8 m high, Facade
                                                 Corrected

                               Description                                      Traffic Noise Level, dB(A) LA10,18h

Base traffic noise level, 13675 vpd, 12855 vp18h total                                           70.2
5.51% CV @ 60 kph                                                                                -0.01
Road gradient (0%)                                                                                 0
Separation distance (20.3m)                                                                       -1.8
Ground absorption                                                                                 -4.4
Façade correction                                                                                +2.5
Road surface                                                                                       0
Barrier                                                                                            0
Angle of view (1400)                                                                              -1.1
TOTAL:                                                                                           65.4


At the closest facade to Elm Street (western side wall of Unit 11) the ultimate facade corrected traffic
noise level exceeds the 60 dB(A) noise limit by 5.4 dB(A) LA10,18H.

At the next closest facade parallel with Elm Street (rear wall of Units 1 and 4) the ultimate facade
corrected traffic noise level will be as per Table 4.

                                                  Table 4
  Calculated Ultimate (2031) Traffic Noise Level at Closest Facade of Unit 1 and 4, Receptor 1.6 m high,
                                            Facade Corrected

                               Description                                      Traffic Noise Level, dB(A) LA10,18h

Base traffic noise level, 13675 vpd, 12855 vp18h total                                           70.2
5.51% CV @ 60 kph                                                                                -0.01
Road gradient (0%)                                                                                 0
Separation distance (45.8m)                                                                       -5.3
Ground absorption                                                                                 -4.7
Façade correction                                                                                +2.5
Road surface                                                                                       0
Barrier                                                                                            0
Angle of view (700)                                                                               -4.1
TOTAL:                                                                                           58.6




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