Att6 - Noise Impact Assessment

Christian Youth Council
Environmental Noise Level Impact Assessment for Proposed Extensions to CYC Youth Camp,
48 Kabi Road, Cootharaba                                                                              Page 11 of 22



              o   waste collection vehicle driving, emptying waste receptacles and departing:
                                           68 – 32 (310m distance) – 7 (ground) = 29 dB(A) LAeq,adj,T;
    •    children/youth playing:
              o 10 children/youth:         61 – 34 (420m distance) – 8 (ground) = 19 dB(A) LAeq,adj,T;
              o 50 children/youth:         68 – 34 – 8 = 26 dB(A) LAeq,adj,T;
              o 100 children/youth:        71 – 34 – 8 = 29 dB(A) LAeq,adj,T;
    •    basketball match, including umpires whistle and yelling and screaming and cheering:
                                           65 – 33 (360m distance) – 8 (ground) = 24 dB(A) LAeq,adj,T;
    •    large air-conditioning unit:      54 + 5 (3 units for office and dining) – 32 (310m distance) – 7
                                           (ground) = 20 dB(A) LAeq,adj,T;
    •    kitchen exhaust fan:              50 – 32 (310m distance) – 7 (ground) = 11 dB(A) LAeq,adj,T;
    •    Village 1 air-conditioning:       54 + 7 (5 units, one per dormitory) – 34 (420m distance) – 8
                                           (ground) = 19 dB(A) LAeq,adj,T.

All of the above source noise levels, calculated to the closest residence to the north-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 1 + 11 + 11 + 26 + 28 + 29 + 24 +
20 + 11 = 33 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 + 26 + 24 + 20 + 11 =
29 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 1 complies with the night-time steady state noise limit of 23 dB(A) LA90,T.


R2 – Closest Residence to the South-east

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

    •    vehicles (10 to 15 kph speed):
             o passenger:
                     ▪ driving:               40 – 32 (320m distance) – 7 (ground) = 1 dB(A) LAeq,adj,T;
                     ▪ door close:            50 – 32 – 7 = 11 dB(A) LAeq,adj,T;
                     ▪ engine start:          50 – 32 – 7 = 11 dB(A) LAeq,adj,T;
              o   bus idling, driving off and arriving at parking bay, including air brakes:
                                             65 – 34 (400m distance) – 8 (ground) = 23 dB(A) LAeq,adj,T;
              o MRV truck driving and unloading, including air brakes:
                                             67 – 34 (400m distance) – 8 (ground) = 25 dB(A) LAeq,adj,T;
              o waste collection vehicle driving, emptying waste receptacles and departing:
                                             68 – 34 (400m distance) – 8 (ground) = 26 dB(A) LAeq,adj,T;
    •    children/youth playing:
              o 10 children/youth:           61 – 34 (400m distance) – 8 (ground) = 19 dB(A) LAeq,adj,T;
              o 50 children/youth:           68 – 34 – 8 = 26 dB(A) LAeq,adj,T;
              o 100 children/youth:          71 – 34 – 8 = 29 dB(A) LAeq,adj,T;
    •    basketball match, including umpires whistle and yelling and screaming and cheering:
                                             65 – 38 (650m distance) – 9 (ground) = 18 dB(A) LAeq,adj,T;
    •    large air-conditioning unit:        54 + 5 (3 units for office and dining) – 39 (680m distance) – 9
                                             (ground) = 11 dB(A) LAeq,adj,T;
    •    kitchen exhaust fan:                50 – 34 (400m distance) – 8 (ground) = 8 dB(A) LAeq,adj,T;
    •    Village 3 air-conditioning:         54 + 6 (4 units, one per dormitory plus dining building) – 34
                                             (400m distance) – 8 (ground) = 18 dB(A) LAeq,adj,T.

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


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