Reference Document - Acoustic Assessment 132007.2446.05

Flashpackers Noosa
Environmental Noise Level Impact Assessment for Proposed Addition of Second Floor to Block C and
Associated Increase to Bed Numbers for Flashpackers, 102 and 106 Pacific Avenue, Sunshine Beach           Page 15 of 29




At the closest residential building to the north-east the noise level impact will be:

    •    6 guests at base of stairs = 76.0 dB(A) LWAeq,adj,T – 33 (17m distance) – 8 (acoustic barrier) =
         35 dB(A) LAeq,adj,T;
    •    6 guests on walkway = 76.0 dB(A) LWAeq,adj,T – 35 (22m distance) = 41 dB(A) LAeq,adj,T;
    •    8 guests inside dorm = 77.5 dB(A) LWAeq,adj,T – 20 (inside to outside dorm) – 27 (9m distance) =
         30.5 = 31 dB(A) LAeq,adj,T.

The noise of 6 guests laughing and talking at either the base or the top of the stairs to the upper level
of Block C complies with the noise limits for the complete 24-hour day. This noise limit compliance is
achieved with no additional noise control measures in place. The noise of 8 guests laughing and
talking inside the closest dorm to the adjoining residence to the north-east the noise limits are also
complied with for the complete 24-hour day.

For the adjoining residence to the north-west there could be a maximum of 24 guests inside the three
new dorms on the upper level of Block C. With all windows fixed closed their noise level would be
reduced by at least 20 dB(A) from inside to outside the building and their noise level at the residence
to the north-west would be:

    •    (77.5 + 77.5 + 77.5 = 82.3) dB(A) LWAeq,adj,T – 20 (inside to outside building) – 24 (6m
         separation distance) = 38.3 = 38 dB(A) LAeq,adj,T.

The noise of all of the 24 guests laughing and talking inside the upper level Block C dorms (with
windows closed) complies with the noise limits for the complete 24-hour day, with no additional noise
control measures required, at the adjoining residence to the north-west.


Swimming Pool Deck

If it is assumed that at any one time half of the total number of guests were on the pool deck and
surrounds, then their noise level would be:

    •    64 + 15 x log1040 = 88.0 dB(A) LWAeq,adj,T

and their noise level impact at the closest residence to the north-east would be:

    •    88.0 dB(A) LWAeq,adj,T – 35 (22m separation distance) – 8 (acoustic barrier) = 45 dB(A) LAeq,adj,T.

The noise limits for the above noise sources, at the adjoining residence to the north-east, are:

    •    daytime:           47 dB(A) LAeq,adj,T;
    •    evening:           47 dB(A) LAeq,adj,T;
    •    night-time:        42 dB(A) LAeq,adj,T.

For guests at the pool deck the noise limits for the daytime and evening (inclusive of the hours of
operation for the swimming pool and deck) are complied with, and this compliance is achieved with no
additional noise control measures required.




David Moore & Associates Pty Ltd                                         Our reference: R25048/D3966/Rev.draft/23.05.25