F3 Freeway Noise Assessment Supplementary Noise ... - RTA

Supplementary Noise Assessment
F3 Widening Between Wahroonga and Hawkesbury River
The traffic noise level recorded at Mount Kuring-gai Public School in both classrooms 5 & 6 was
LAeq, 1hr = 39 dB(A). This currently satisfies the noise criterion of LAeq, 1hr = 45 dB(A) for existing
schools affected by noise from proposed roads outlined in Department of Environment and
Conservation’s (DEC) “Environmental Criteria for Road Traffic Noise” (ECRTN, May 1999),
which represents the NSW State Government’s current policy on road traffic noise.
As calculated from the noise assessment included in the REF, noise levels for the existing
alignment in 2007 would be the same as the existing traffic noise level in 2006. Taking into
consideration the traffic volume increase and the increase in percentage of heavy vehicles over
10 years, an overall increase of 2 dB(A) for the daytime and 2 dB(A) increase for the night time
period would be expected. Tables 2 and 3 include predicted traffic noise levels for the
residential dwellings for the future existing alignment (predicted 2007 noise level if the project
were not to proceed) and the proposed alignment in the design year 2017.
Table 2
Summary of Daytime Traffic Noise Levels for Residences in the
Vicinity of the Proposal (Existing 2007 and Proposed Alignment 2017).
SITE
LOCATION
2007
Existing
alignment
TRAFFIC NOISE LEVEL Leq, 15 hour [dB(A)]
DOES IT
2017
DOES IT
EXCEED
EXCEED
Proposed BASE
ALLOWANCE
alignment NOISE
NOISE GOAL
GOALS
ACUTE *
1/2 Flanders Ave Mt Kuring-gai 66 68 Yes No Yes
3C Alicia Rd Mt Kuring-gai 60 62 Yes No No
904 Pacific H/wy Berowra 62 64 Yes No No
18 Bayview St Mt Kuring-gai 62 64 Yes No No
902 Pacific H/wy Berowra 62 64 Yes No No
906 Pacific H/wy Berowra 58 60 No N/A No
908 Pacific H/wy Berowra 55 57 No N/A No
7 Flanders Ave Mt Kuring-gai 61 63 Yes No No
8 Flanders Ave Mt Kuring-gai 64 66 Yes No Yes
* Acute noise level is traffic noise being equal to or greater than 65 dB(A) for the daytime period.
Table 3
Summary of Night Time Traffic Noise Levels for Residences in the
Vicinity of the Proposal (Existing 2007 and Proposed Alignment 2017).
SITE
LOCATION
2007
Existing
alignment
TRAFFIC NOISE LEVEL Leq, 9 hour [dB(A)]
DOES IT
2017
DOES IT
EXCEED
EXCEED
Proposed BASE
ALLOWANCE
alignment NOISE
NOISE GOAL
GOALS
ACUTE *
1/2 Flanders Ave Mt Kuring-gai 63 65 Yes No Yes
3C Alicia Rd Mt Kuring-gai 57 59 Yes No No
904 Pacific H/wy Berowra 55 57 Yes No No
18 Bayview St Mt Kuring-gai 59 61 Yes No Yes
902 Pacific H/wy Berowra 56 58 Yes No No
906 Pacific H/wy Berowra 52 54 No N/A No
908 Pacific H/wy Berowra 49 51 No N/A No
7 Flanders Ave Mt Kuring-gai 57 59 Yes No No
8 Flanders Ave Mt Kuring-gai 62 64 Yes No Yes
* Acute noise level is traffic noise being equal to or greater than 60 dB(A) for the night time period.
Based on the overall increase of 2 dB(A) expected for the design year 2107, the traffic noise
level at Mount Kuring-gai Public School in both classrooms 5 & 6 would be LAeq, 1hr = 41 dB(A).
This also would satisfy the noise criterion of LAeq, 1hr = 45 dB(A) as outlined in ECRTN.
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