Appendix F- Acousitc Report · MCU21/0117.01

Cooroy Villas Pty Ltd
Environmental Traffic and Rail Noise Level Impact Assessment for Proposed Residential Unit Development,
54 Elm Street and 5 Pearl Street, Cooroy                                                                      Page 15 of 36



Therefore, for Elm Street adjacent to the subject site, the ultimate traffic volumes will be:

       2021     9779 vpd
       2022     9811 vpd
       2023     9843 vpd
       2024     9876 vpd
       2025     9909 vpd
       2026     9942 vpd
       2027     9975 vpd
       2028     10008 vpd
       2029     10041 vpd
       2030     10074 vpd
       2031     10107 vpd
       2032     10140 vpd
       2033     10175 vpd
       2034     10208 vpd.

This increase in traffic volume will increase traffic noise levels (to 2034) as follows:

•      (29.1 + 10 log10 10208) – (29.1 + 10 log10 9779) = 0.2 dB(A).

Therefore, for ultimate traffic volumes, traffic noise levels will be, at Monitoring Location A, at an
elevation of 1.6 m, 60.7 + 0.2 = 60.9 dB(A) LA10,18H, free field.

Traffic Noise – Level 1 Private External Living Areas

In accordance with PO39 ultimate free field traffic noise levels must comply with a noise limit of 57
dB(A) LA10,18H as the LA90,8H was less than 40 dB(A). this noise limit is applicable at all private external
living areas, which for this proposed development are all at level 1 – terraces.

For the closest terrace to Elm Street (Unit 1) the ultimate free field traffic noise levels will be as per
Table 3.


                                                      Table 3
    Calculated Ultimate (2034) Traffic Noise Level at Closest (Unit 1) Terrace, Receptor 1.8 m high, Free Field

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

    Base traffic noise level, 10208 vpd, 12855 vp18h total                                        68.9
    7.9% CV @ 60 kph                                                                              +0.5
    Road gradient (0%)                                                                              0
    Separation distance (23m)                                                                     -2.3
    Ground absorption                                                                             -2.4
    Façade correction                                                                               0
    Road surface                                                                                  +1.0
    Qld conditions                                                                                -0.7
    Barrier                                                                                         0
    Angle of view (1000)                                                                          -2.6
    TOTAL:                                                                                        62.4




David Moore & Associates Pty Ltd                                          Our reference: R23089.docx/D3819/Rev.0/17.01.24