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 9 of 21

NOISE LEVEL IMPACT

April 2012 - Competency Assessment Circuit

From the results of the April 2012 noise level measurements, quad bike noise levels were calculated
to closest residences, with due consideration of separation distance, intervening vegetation and
topography, and 12 quad bikes using the competency assessment circuit simultaneously. These
calculations predicted the following quad bike noise levels (for 12 quad bikes on the competency
assessment circuit) at the closest residential:

e 335 Tablelands Road: 33.2 dB(A) Latoagj.t:
e 301 Tablelands Road: 28.2 dB(A) Lato,agj.r:
¢ 268 Tablelands Road: 36.2 dB(A) Lato.agjr; and
e 295 Tablelands Road: 32.2 dB(A) Lato,agjt-

and for four quad bikes on the competency assessment circuit their noise level at the closest
residential would be 4.2 dB(A) less (as per my letter G12092/D2670/DJM dated 1 July 2012):

e 335 Tablelands Road: 29.0 dB(A) Lato,agj.ri

e 301 Tablelands Road: 24.0 dB(A) Lato,agj.r3 O°
e 268 Tablelands Road: 32.0 dB(A) Lato,agj,r; and Lod J a4 of LA 4

e 295 Tablelands Road: 28.0 dB(A) Lato,agj,t-

vor pare !

July 2012 —- Competency Assessment Circuit

 

From the July 2012 noise level measurements at the closest residences to the competency
assessment circuit the noise level reduction from 77 dB(A) Laeqr (and 78 dB(A) La1o,r and 76 dB(A)
Lago,r) at 10 metres from the test noise source wer

e 268 Tablelands Road: 41.4 -34.9.=.49.3 dB(A) for the test noise source only. Noise level
reduction a 6 40.3 = 35.7 dB(A);

e 295 Tablelands Road: 39.6 — 36.2 6.9 dB(A) for the test noise source only. Noise level
reduction “f6- 36.9 = 39.1 dB(A);

e 374 Tablelands Road: could not be determined due to noise level measurement with test
noise source operating was less than the measurement without the
test noise source. Noise level with test noise source was 36.3 dB(A)
Lago,t- Estimated source noise level alone would be at least 4 dB(A)

less, namely 32 dB(A), giving a test noise source reduction of at least
{ 5 32 = 44 dB(A) (estimated).

The noise level of one quad bike on the competency assessment circuit was:

e experienced rider: 66.2 dB(A) La: Ty ; rohality) = 66.2 dB(A) Lato,ag,r @ 10 metres;
e inexperienced rider: 62.8 dB(A) Lyi, 2 a We ality) = 63.9 dB(A) Lato,ag,r @ 10 metres.

For more than one quad bike on the competency e sessment circuit the noise level @ 10 m would be:

e experienced rider:

 

o one Kymco MXU300 quad bike: 66.2 dB(A) Lato,aq.r @ 10m;
o two Kymco MXU300 quad bikes: 69.2 dB(A) Lato,ag,r @ 10m;
o three Kymco MXU300 quad bike : 71.2 dB(A) Lato,ag,r @ 10m;
o four Kymco MXU300 quad bikes 72.2 dB(A) Lato,ag,r @ 10m;
David Moore & Associates Pty Ltd . , Our tererencey R12054/D2670/Rev. ee, 07. 2042

Wom Agus, ME ~- lin Cs

. p es

Ss a © ue