Noise Report

Medicentre 2 Pty Ltd ATF Medicentre Properties No 2 Trust
Environmental Noise Level Impact Assessment for Proposed Medical Centre, 45 Maple Street, Cooroy              Page 8 of 20



Based on the above average background sound levels the noise limits (Default Noise Standards) for air-
conditioning units (and any exhaust fans) would be:

        daytime (0700 to 1800 hours):                   45.5 + 5 = 51 dB(A) LAeq,adj,T;
        evening (1800 to 2200 hours):                   48.9 + 5 = 54 dB(A) LAeq,adj,T;
        night-time (2200 to 0700 hours):                39.8 + 3 = 43 dB(A) LAeq,adj,T.

The Acoustic Quality Objective criteria, for the same time periods, are:

        daytime (0700 to 1800 hours):                   50 dB(A) LAeq,adj,1H;
        evening (1800 to 2200 hours):                   50 dB(A) LAeq,adj,1H;
        night-time (2200 to 0700 hours):                35 dB(A) LAeq,adj,1H.

Therefore air-conditioner and fan noise compliance with the Acoustic Quality Objectives will also result
in compliance with the Default Noise Standards.


SOURCE NOISE LEVELS

From previous noise level measurements conducted by the consultant of general vehicle activities,
loading activities, people noise, etc typical source noise levels, adjusted to be equivalent to a 15-minute
period (as the following noise sources would only occur infrequently during any 15-minute period), are:

        car driving on site:                  40 dB(A) LAeq,adj,1H, 48 dB(A) LA1,adj,1H and 43 dB(A) LA10,adj,1H @
                                               8 metres;
        car door closing:                     39 dB(A) LAeq,qdj,1H, 46 dB(A) LA1,adj,1H and 42 dB(A) LA10,adj,1H @
                                               30 metres;
        car engine starting:                  39 dB(A) LAeq,qdj,1H, 46 dB(A) LA1,adj,1H and 42 dB(A) LA10,adj,1H @
                                               30 metres;
        people laughing, talking, etc:        52 dB(A) LAeq,adj,1H, 58 dB(A) LA1,adj,1H and 55 dB(A) LA10,adj,1H @
                                               8 metres;
        SRV driving:                          45 dB(A) LAeq,adj,1H, 52 dB(A) LA1,adj,1H and 48 dB(A) LA10,adj,1H @
                                               8 metres;
        SRV unloaded:                         50 dB(A) LAeq,adj,1H, 58 dB(A) LA1,adj,1H and 53 dB(A) LA10,adj,1H @
                                               8 metres;
        waste collection:                     65 dB(A) LAeq,adj,1H, 72 dB(A) LA1,adj,1H and 68 dB(A) LA10,adj,1H
                                               @ 8 m.

With respect to air-conditioning plant it has been assumed that this would be located in the basement
carpark. The noise level of the air-conditioning condenser has been assumed to be 80 dB(A) LWA,
which is equivalent to 62 dB(A) LAeq,adj,1H, 64 dB(A) LA1,adj,1H and 63 dB(A) LA10,adj,1H at 3 metres.

It has also been assumed that there would be three air-conditioning condensers.


NOISE LEVEL IMPACT

The closest residential to the subject site are to the immediate south and to the east. The noise level
impact at these closest residences will be as follows:

Closest Residence to East

        car driving on site:                  40 dB(A) LAeq,adj,1H – 16 (distance) – 8 (barrier effect of corner
                                               of medical centre) = 16 dB(A) LAeq,adj,1H;
                                               48 dB(A) LA1,adj,1H – 16 – 8 = 24 dB(A) LA1,adj,1H;
                                               43 dB(A) LA10,adj,1H – 16 – 8 = 19 dB(A) LA10,adj,1H;




David Moore & Associates Pty Ltd                                                 Our reference: R20018/D3464/Rev.0/9.03.20