132003.221132 (23616DA) - Doonella Estate - Road Traffic Noise Assessment Report

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CONSULTING ENGINEERS

6:00 am and 12:00 midnight on a typical weekday. The Lio noise level is described as being the noise
level exceeded !0% of the time.

The L90(8 hour) and Ls0(18 hour) noise levels are the arithmetic average of the hourly Ls0 noise
levels between the hours of 10:00 pm and 6.00 am and 6:00 am and 12:00 am, respectively on a
typical weekday. The Lso noise level is described as being the noise level exceeded 90% of the time.

If the predicted road traffic noise at a residential building exceeds the noise criterion, acoustic barriers
are the initial preferred option for noise amelioration. If the predicted road traffic noise still exceeds
the noise criterion after noise barriers have been optimised, the remaining treatment option is to
incorporate noise control measures into the building design to ameliorate road traffic noise to meet
internal noise level limits in the dwellings.

Table 4.1 Recommended Design Sound Levels for Different Areas of Occupancy in Buildings
(AS2107 - 2000)

 

Location Recommended Design Sound Levels
Maximum dB(A)

 

 

 

Bedrooms 40 dB(A)
Recreational areas 45 dB(A)
Work areas 45 dB(A)

 

 

 

 

The Queensland Department of Main Roads also recommends noise level limits for parks, outdoor
educational and recreational areas. For this scenario QDMR recommend:

° The Lio (12 hour) should be equal to or less than 63 dB(A), taking into consideration the full
circumstances surrounding the provision and future use of the park or recreational area.

In addition to the Queensland Department of Main Roads (QDMR) “Road Traffic Noise
Management: Code of Practice” the Noosa Shire Council recommends that new developments
should comply with the Environmental Protection (Noise) Policy 1997. Schedule | states that:

The planning levels for a public road are the following noise levels assessed | m in front of the most
exposed part of an affected noise sensitive place —

(a) The following levels assessed as the Lio (18 hour) level -
(i) For a state-controlled road - 68 dB(A);
(ii) for another public road - 63 dB(A);

(b) 60 dB(A) assessed as the highest | hour equivalent A-weighted sound pressure
level between 10 pm and 6 am

(c) 80 dB(A) assessed as a single event maximum sound pressure level.

3052R01V03.doc Proposed Residential Subdivision Beckmans Road, Tewantin Lensworth Lake Doonella Pty Ltd c/- PMM Group Pty Page +

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