img-730171023-0001-2 · MCU12/0012

Noosa Quad Bike Tours
Environmental Noise Level Assessment of Quad Bike Rider Competency Assessment Circuit,
298 Tablelands Road, Cooran Page 11 of 21

Recovery Vehicle and Voices
Recovery Vehicle

In accordance with the results of the source noise level measurements detailed in Table 4, the
recovery vehicle (Kawasaki Mule) at normal operating revs is 1.3 dB(A) La1o.r greater than the noise
of one quad bike ridden by an experienced rider. Based on the noise levels calculated in Table 5 the
noise level of this recovery vehicle, from the competency assessment circuit at the closest adjoining
residences, would be:

¢ 268 Tablelands Road: 30.5 + 1.3 = 31.8 dB(A) Latori
¢ 295 Tablelands Road: 27.1 + 1.3 = 28.4 dB(A) Lator;
e 374 Tablelands Road: ~22.2 + 1.3 = ~23.5 dB(A) Lator.

This recovery vehicle is road registered and is currently ridden by the owner up and down Tablelands
Road to visit his neighbours. Therefore it is a noise source which is already present in the area and
should not require any noise consideration with respect to the quad bike tours, as itis not introducing
a new noise source.

Voices

The noise of peoples voices talking and laughing has been previously assessment by the consultant
at a number of different venues, with a source noise level of approximately 60 dB(A) Latoay,r @ 10 m.
This is the source noise for a group of at least 15 to 20 people talking and laughing, which is more
than would be present at the competency assessment circuit at any one time.

This source noise is 6 dB(A) and 4 dB(A) Laroag,7 less than the noise of one quad bike with an
experienced and inexperienced rider respectively on the competency assessment circuit. The
additive effect of the noise of people laughing and talking (to quad bike/s on the competency
assessment circuit) would be s 1 dB(A), with + 1 dB(A) at the closest residential being the worst case
scenario.

State of Compliance

For the daytime period the average background noise level was 37.6 dB(A) Lago,r- For steady state
noise a commonly applied daytime noise limit criteria is ‘background + 5 dB(A)’, giving a noise limit of
43 dB(A). This daytime noise limit, expressed as the Latoag,r is complied with by all potential noise
sources associated with the quad bike competency assessment circuit.

To minimise effects of ‘background creep’ to Environmental Protection (Noise) Policy 2008 defines a
criteria for steady state noise, requiring that the existing background Lago noise level is not exceeded
by the source Lago,r noise level. This legislation post dates the background creep criteria detailed in

the Ecoaccess Guideline titled Planning for Noise Control, dated 2004, and is the current applicable

criteria for the assessment of ‘background creep’.

The daytime background noise level was an average (over the four days of assessment, including
weekday and weekend) of 37.6 dB(A) Lago, with the lowest daily average being 36.4 dB(A) Lago,r.

The source noise level for the quad bikes, calculated to the closest adjoining residences in Table 5, is
expressed as the Latoag,7, to enable direct comparison to the ‘background plus allowance’ noise limit
criteria. From Table 4 the Laog7 source noise levels, compared to the Lajo,r source noise levels, were
9.6 and 13.3 dB(A) less for experienced and inexperienced quad bike riders respectively. Once these
adjustments are made to the noise levels detailed in Table 5 the background creep criteria of the
Environmental Protection (Noise) Policy 2008 is complied with.

 

David Moore & Associates Pty Ltd Our reference: R12054/D2670/Rev.1/23.07.2012