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

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8 Recommendations

It is recommended that the facades of ground floor residences located on allotments 159 - 171, 175
and 177 — 181 and first floor residences located on allotments 159 - 171 and 174 — 181 be provided
with architectural treatments in order to achieve the internal noise level goals in Table 4.1. A
description of the construction category required to achieve the internal noise level goals is contained
in Table 7.1. The architectural treatments required to achieve the internal noise goals should be
determined upon finalisation of the building design and layout. There are no requirements for any
other residences located on the subject site.

It is recommended that the formal external open space area of allotments 167 - 171 and 178 — [81
be designed and located to reduce road traffic noise levels. This may include the use of acoustic
barriers on the allotment site, or by location of recreation areas on the ‘quiet’ side of dwellings (ie. the
facade that is shielded from road traffic noise from Beckmans Road).

9 Conclusion

The applicable QDMR external traffic noise criterion is 60 dB(A) Lio(18 hour) | metre from the
building facade. If the external traffic noise criterion of 60 dB(A) Lio(18 hour) | metre from the
building fagade cannot be met the proposed dwelling must comply with the noise levels outlined in
Table 4.1.

The highlighted cells in Table 5.3 show where the 60 dB(A) Lto(|8 hour) road traffic noise criterion is
exceeded.

Noosa Shire Council has indicated that the preferred option for noise amelioration at allotments
which exceed the external noise level limit of 60 dB(A) Lio (18 hour) | metre from the building
facade is to incorporate architectural treatments into the facade of proposed buildings to comply with
the internal noise criteria in shown in Table 4.1. The ground floor of residences located on allotments
159 — 171, 175 and 177 — 181 and the first floor of residences located on allotments 159 — 17] and
174 — 181 would require architectural treatments to achieve the internal noise criteria in Table 4.1.

To achieve these internal noise levels at the proposed residences, the relevant facade of each
residence will be required to provide the necessary attenuation as described in Section 7.1.

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

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