Environmental Noise Report · MCU13/0064

5 Noise Assessment

5.1 Mechanical Plant and Equipment

Predicted mechanical plant noise levels at the nearest sensitive receivers (see Table 4.2) are within
the nominated criteria presented in Section 3.2.

5.2 Water Craft

Noise level measurements were undertaken for site vessels presented in Table 1.3. A summary of
the noise level measurements is presented in Table 5.1. It was noted during the site visit that the
Herreshoff 30 river boat is propelled by an electric motor and not considered a significant noise
source.

                                  Table 5.1: Site Vessels Noise Level Measurements
               Vessel                                   Conditions                    Noise Level dB(A)
      175 hp Brig 645 speedboat                   Approximately 6 knots                   60 at 30 m
                                                  Approximately 10 knots                  63 at 30 m
                                                  Approximately 20 knots                  65 at 30 m
                                                       Full throttle                      71 at 30 m
          Registered barge.                                 Idle                          50 at 30 m
                                                       Mid throttle                       56 at 30 m



Currently Noosa River noise emissions are controlled by use of speed limits as presented in Figure
3.1. As the area in the vicinity is designated with a 40 knot speed limit the maximum noise level
from site vessels is 71 dB(A) at 30 m.

Currently the EP Act does not set provisions for the assessment of recreational craft within non-
coastal waters. A draft Department of Environment and Heritage (DEH) and Queensland Transport
noise guideline released in 1993 (DEH QT, 1993) set the following limits from various water craft as
shown in Table 5.2. It is noted that the maximum noise level presented in Table 5.1 from site craft is
below the recreational craft noise level goal of 78 dB(A).

                              Table 5.2: Recommended Maximum Noise from Vessels
                        Boat Type                                Maximum Level Passby at 30 , Full Throttle,
                                                                                 dB(A)
                     Recreational Craft                                              78
                     Air Cushion Craft                                               78
                        Racing Boat                                                  95



The site’s noise emission is considered acceptable given that the river is used by numerous
recreational craft and the site vessel movements are infrequent.




0023-R1-01 KHA Makepeace Island Noise Impact Assessment Report                                                 13
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