07/2398 - Revised Noise Report and cover letters to referral agencies [As Published] · 132007.2398

RSL Care ==
Proposed RSL Retirement Village, Cooroy - Road and Rail Noise Assessment (Revised) ———

 

 

 

 

 

 

 

 

 

Receptor 2018 Worst-Case Predicted Laro,1s-nour Noise Level dB(A)
Ground Floor First Floor
Aged Care Facility (SE Wing) 55 55
20 Unit Apartment 51 52
Community Village Building 54 -

 

 

' Receptor positions are identified on Figure 7
? Bold represents exceedance in the noise criteria

According to the results presented in Tables 5.3 to 5.4, a significant portion of the site is predicted
to exceed the DMR criterion. An exceedance of up to 6 dB(A) and 9 dB(A) is predicted for 2008 and
2018 traffic levels respectively.

For the Aged Care Facility, compliance is predicted at all rooms, except for those located on the
first floor in the South Western Wing. The DMR criterion is predicted to be exceeded by up to
1 dB(A). Compliance is predicted for the 20 Unit Apartment and Community Village Centre located
to the rear of the development.

5.6 MITIGATION OPTIONS
5.6.1 Construction Material Requirements

Construction material requirements for reducing road and rail noise to within the relevant internal
criteria has been determined in accordance with AS 3671 Road Traffic Noise Intrusion — Building
Siting and Construction. AS 3671 specifically addresses road noise however, the methodology
outlined is also appropriate for determining construction material requirements associated with rail
noise.

The following information is required for determining construction material requirements according
to AS 3671:

= recommended internal noise criteria;
= noise reduction (NR) required for achieving the internal noise criteria; and
= building/room dimensions.

The Noosa Shire Council has specified the following internal noise criteria:

= internal Lamax for rail noise - 50 dB(A) and 55 dB(A) for sleeping and living areas respectively;
and

= internal Lacgtnou for road traffic noise - 35 dB(A) and 40 dB(A) for sleeping and living areas
respectively.

Based on the noise monitoring data, a plus 0.2 dB(A) correction has been applied to predicted
Lato,1ehour Noise levels to approximate to Laeq,-nour- As the external traffic noise predictions generated
estimated free-field noise levels a correction to these levels must first be made to predict facade
noise levels. Typically a +2.5 dB(A) correction is applied to free-field noise levels to approximate to
facade levels.

 

AIR NOISE ENVIRONMENT PTY LTD
INETWORK/PROJECTS/1750/REPORTING/2008 REVISION/1750REPORTO4.0DT Page 26