Noise Report 54 Boronia Road MCU17-0546

Allstar Metal Fabrication
Environmental Noise Level Impact Assessment of Metal Fabrication Business, 54 Boronia Road, Cootharaba      Page 8 of 17




For the above new equipment the highest noise source was the guillotine cutting 3 mm thick aluminium
checker plate, which is the thickest material that is cut on the new guillotine. At a separation distance of
3 metres from the guillotine the noise levels of cutting 3 mm thick aluminium checker plate would be
reduced by approximately 2 dB(A) to be the equivalent noise levels at a separation distance of 5
metres, as per the September 2017 source noise levels. Therefore, at a separation distance of 5
metres, the noise of the guillotine cutting 3 mm thick aluminium checker plate would be approximately:

        76.3 dB(A) LAeq,T;
        83.9 dB(A) LA1,T;
        80.8 dB(A) LA10,T

The September 2017 noise levels inside the workshop were, at a separation distance of approximately
5 metres to the closest noise sources:

        87.6 dB(A) LAeq,T;
        97.5 dB(A) LA1,T;
        91.8 dB(A) LA10,T

As the noise levels from the loudest operation of the new equipment (guillotine and metal folding
machine) are more than 10 dB(A) less than the overall noise levels from inside the workshop, the noise
of this new equipment does not have any additive effect on the September 2017 source noise levels
and the following calculations of noise impact to the nominated boundaries.

In fact, because the new equipment is so much quieter than the equipment which it has replaced, this
new equipment would have the overall effect of reducing any potential noise impact from AllStar Metal
Fabrication to any of the nearby residential properties.


NOISE LEVEL IMAPCT


Eastern Boundary

The noise level reduction from 15 metres from the eastern end of the Allstar Metal Fabrication building
to the closest part of the eastern site boundary (approximately 80 metres distant) is 14.5 dB(A).

For the average source noise level measurements detailed in Table 2, these noise levels at the closest
part of the eastern boundary of the subject site would be:

        43.6 – 14.5 = 29 dB(A) LAeq,15min;
        49.8 – 14.5 = 35 dB(A) LA1,15min;
        45.8 – 14.5 = 31 dB(A) LA10,15min.

For noise from Allstar Metal Fabrication to not be audible beyond the boundaries of the subject site the
noise from Allstar Metal Fabrication must not exceed:

        42 dB(A) LAeq,15min;
        54 dB(A) LA1,15min;
        44 dB(A) LA10,15min.

As none of these noise levels are exceeded on the closest part of the eastern side boundary of the
subject site, noise from Allstar Metal Fabrication complies with Noosa Plan section SC53.2 – noise from
the business is not audible beyond the eastern site boundary.




David Moore & Associates Pty Ltd                                               Our reference: R17078/D3286/Rev.1/2.04.18