Att6 - Noise Impact Assessment

Christian Youth Council
Environmental Noise Level Impact Assessment for Proposed Extensions to CYC Youth Camp,
48 Kabi Road, Cootharaba                                                                              Page 12 of 22




For the daytime the relevant combined source noise levels would be 1 + 11 + 11 + 23 + 26 + 29 + 18 +
11 + 8 + 18 = 32 dB(A) LAeq,adj,T, which is worst case and complies with the daytime noise limit.

For the evening the relevant combined source noise levels would be 1 + 11 + 11 + 23 + 18 + 11 + 8 +
18 = 26 dB(A) LAeq,adj,T, which is worst case and complies with the evening noise limit.

It is not anticipated that there would be any night-time noise sources other than air-conditioning, which
the combined effect of Village 3 complies with the night-time steady state noise limit of 23 dB(A) LA90,T.


R3 – Closest Residence to South-south-west

At the closest residence to the south-south-west the above noise sources will be:

    •    vehicles (10 to 15 kph speed):
             o passenger:
                     ▪ driving:               40 – 38 (650m distance) – 9 (ground) = <0 dB(A) LAeq,adj,T;
                     ▪ door close:            50 – 39 (730m distance) – 9 (ground) = 2 dB(A) LAeq,adj,T;
                     ▪ engine start:          50 – 39 – 9 = 2 dB(A) LAeq,adj,T;
              o   bus idling, driving off and arriving at parking bay, including air brakes:
                                             65 – 39 (730m distance) – 9 (ground) = 17 dB(A) LAeq,adj,T;
              o MRV truck driving and unloading, including air brakes:
                                             67 – 40 (810m distance) – 9 (ground) = 18 dB(A) LAeq,adj,T;
              o waste collection vehicle driving, emptying waste receptacles and departing:
                                             68 – 40 (810m distance) – 9 (ground) = 19 dB(A) LAeq,adj,T;
    •    children/youth playing:
              o 10 children/youth:           61 – 40 (800m distance) – 9 (ground) = 12 dB(A) LAeq,adj,T;
              o 50 children/youth:           68 – 40 – 9 = 19 dB(A) LAeq,adj,T;
              o 100 children/youth:          71 – 40 – 9 = 22 dB(A) LAeq,adj,T;
    •    basketball match, including umpires whistle and yelling and screaming and cheering:
                                             65 – 40 (800m distance) – 9 (ground) = 16 dB(A) LAeq,adj,T;
    •    large air-conditioning unit:        54 + 5 (3 units for office and dining) – 40 (800m distance) – 9
                                             (ground) = 10 dB(A) LAeq,adj,T;
    •    kitchen exhaust fan:                50 – 40 (800m distance) – 9 (ground) = 1 dB(A) LAeq,adj,T;
    •    Village 3 air-conditioning:         54 + 6 (4 units, one per dormitory plus dining building) – 41
                                             (900m distance) – 9 (ground) = 10 dB(A) LAeq,adj,T.

All of the above source noise levels, calculated to the closest residence to the south-south-west,
individually comply with the daytime, evening and night-time noise limits, with no additional noise
control measures in place.

For the daytime the relevant combined source noise levels would be 0 + 2 + 2 + 17 + 19 + 22 + 16 +
10 + 1 + 10 = 25 dB(A) LAeq,adj,T, which is worst case and complies with the daytime noise limit. This
also complies with the evening and night-time noise limits, albeit that some of the noise sources
included for the daytime would not be relevant for the evening or night-time periods.




David Moore & Associates Pty Ltd                                  Our reference: R22072.docx/D3681/Rev.0/25.08.2022