Environmental Noise Level Impact Assessmentf

Allstar Metal Fabrication
Environmental Noise Level Impact Assessment of Metal Fabrication Business, 54 Boronia Road, Cootharaba       Page 5 of 16



•   LA90,T:
         •    daytime:    40.7, 37.4, 40.3, 43.1, 40.5, 38.7, 38.4          Average = 39.9 dB(A);
         •    evening:    57.5, 58.0, 57.6, 54.1, 44.0, 49.6, 43.7          Average = 52.1 dB(A);
         •    night-time: 60.1, 60.7, 62.0, 61.6, 61.4, 61.4, 61.3          Average = 61.2 dB(A).

It should be noted that for the ambient noise assessment there were no adverse weather conditions
(such as rain – no rain for all days of sampling) or extraneous noise events which warranted any of the
collected noise data to be excluded from the averaging process. Refer Appendix C for meteorological
details for the closest recording station to Cootharaba, namely Double Island Point.


APPLICABLE NOISE LIMITS

All noise sources associated with Allstar Metal Fabrication are enclosed (located inside a building) and,
therefore the requirements of SC53.3 are complied with.

In accordance with SC53.2 any noise from Allstar Metal Fabrication must be inaudible beyond the
boundary of the subject site, namely 54 Boronia Road. To the east the boundary is approximately 80
metres from the closest part of the Allstar Metal Fabrication building. At this location noise from Allstar
Metal Fabrication must not exceed the average ambient daytime noise levels less 10 dB(A) to
effectively be not more than the average ambient daytime noise level, namely:

     •   52 – 10 = 42 dB(A) LAeq,15min;
     •   64 – 10 = 54 dB(A) LA1,15min;
     •   54 – 10 = 44 dB(A) LA10,15min.


SOURCE NOISE LEVEL MEASUREMENTS

Source noise level measurements were obtained at a distance of 15 metres from the eastern end of the
Allstar Metal Fabrication building, with the closest boundary approximately 80 metres distant. These
noise level measurements did include some noise of bird calls, but were dominated by noise from
Allstar Metal Fabrication, including grinding, compressor, metal cut-off saw, metal guillotine and metal
impact noise (metal on metal noise). Table 2 details the results of these noise level measurements and
Figure 2 is a graphical presentation of a representative part of the monitoring, for the nominated
parameters.


                                               Table 2
              Source Noise Level Measurement Results 15m from Eastern End of Allstar Metal
                                         Fabrication Building
                                          Noise Level, dB(A)
              Time                                                                      Comment
                             LAeq,10min        LA1,10min       LA10,10min
         1050-1100             42.8             49.5             45.8         Noise of hammering,
         1100-1110             43.7             48.6             45.4         grinding, metal cut-off saw,
                                                                              metal guillotine and
         1110-1120             43.9             50.4             45.8         compressor. Also some
                                                                              noise of birds – 52, 52, 53,
         1120-1130             43.6             49.5             45.7         55, 55 and 56 dB(A)
         1130-1140             43.9             47.6             45.9         maximum.

         AVERAGE               43.6             49.8             45.8




David Moore & Associates Pty Ltd                                               Our reference: R17078/D3286/Rev.0/3.12.17