Kingscote Airport Master Plan Apr 2010 - Kangaroo Island Council

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KINGSCOTE AIRPORT MASTER PLAN Aircraft Noise The Australian Noise Exposure Forecast (ANEF) system is used to determine potential aircraft noise around Australian airports. The ANEF system uses the sum of predicted aircraft noise events over an average day to determine the forecast noise exposure level. For airports with low traffic volumes and no jet activity, noise footprints generated by the ANEF model often barely go beyond the airport boundary. This can give a perception that aircraft noise does not occur in areas where residents do in fact experience aircraft noise albeit on an infrequent basis. An alternative approach is to compare the frequency and extent of individual noise events to the Building Site Acceptability provided in AS 2021 Acoustics - Aircraft Noise Intrusion - Building Siting and Construction as shown in the following Table. Table 4 Building Site Acceptability Based On Aircraft Noise Levels Aircraft noise level expected at building site, dB(A) 20 or less flights per day Greater than 20 flights per day Building site Acceptable Conditionally acceptable Unacceptable Acceptable Acceptable Conditionally Unacceptable House, home unit, flat, 90 85 caravan park Hotel, motel, Hostel, 95 90 Public Buildings Commercial building < 90 90 to 100 > 100 90 Light Industrial < 95 95 to 105 > 105 100 Heavy Industrial No limit No limit No limit No limit No limit No limit For the purpose of this Master Plan the following assumptions have been made: − the maximum size aircraft regularly servicing Kingscote within a 15 year time frame will be F50/Q400; − the aircraft arrivals and departures will follow the extended runway centreline for duration of noticeable noise levels; and, − traffic numbers using the cross runways are so low that aircraft noise is unlikely to impact on the community which remains well clear of the flight paths for this runway. Australian Standard AS 2021 Acoustics - Aircraft noise intrusion - Building Siting and Construction provides noise level tables dB(A) for aircraft representative of the design aircraft i.e. the Saab / F50 / Dash 8 aircraft. A plot of the single event contours is shown on the following plan at Figure 4. Note the Dash 8- Q400 is rated quieter than the aircraft listed in AS 2021 so the noise level shown overleaf can be considered a worst case scenario. The plan shows the extent of individual noise contours of the larger aircraft (expected to be less than 20 flights per day) do not extend to the population centres. Similarly general aviation aircraft operations even if exceeding 20 flights per day, remain clear of population centres. In order to avoid future noise problems it is recommended that noise sensitive development such as residential areas be kept clear of the 80 dB(A) contours shown on the plan. Where a proponent wishes to construct individual dwellings within the 80 dB(A) zone consideration to the use of noise control features in the design as per the recommendations contained AS 2021 is suggested. 18
KINGSCOTE AIRPORT MASTER PLAN Figure 4 Single Event Noise Contours for Saab 340/F50/Dash8 19
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Kingscote Airport Master Plan Apr 2010 - Kangaroo Island Council

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