CUTI'S OFFICE (GOVT HOUSE)
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PAA
2 March 1992 (2)
Noise
With the implementation of various mitigation measures, Hong Kong Government allowable noise levels are expected to be achieved for the small number of people to be affected by the airport project.
The Chek Lap Kok excavation plan will be developed in such a way that
all prudent measures are taken to shield Noise Sensitive Receivers (NSRs) from excessive noise, the master plan states. NSRs are, for example, houses, schools and churches.
Mitigation measures have been designed to minimise the noise emitted from the construction site. The southern tip of Chek Lap Kok will be preserved to act as a natural noise shield. Other measures Include the construction of a 10-metre high noise barrier in advance of the main reclamation works.
The master plan also proposes funding for the acquisition and operation of air conditioners for about 73 NSRs which are still projected to receive unacceptable noise levels. The air conditioners will allow these receivers to keep windows closed and the walls will provide insulation from external noise, achieving allowable noise levels.
Noise Exposure Forecast (NEF) contours are used to predict aircraft noise Impacts upon completion of the new airport, and take into account 24-hour operations. International Civil Aviation Organisation guidelines indicate all land uses are compatible with noise levels under 30 NEF.
The Government planning standard to be used for the new airport though is the more stringent 25 NEF.
AM2+2
Based on 1991 developments, only approximately 14 NSRS, comprising about 50 people, are expected to lie within the 25 NEF contour for the year 2000. This compares to the 350,000 people who live within the 30 NEF contour around the existing airport at Kai Tak.
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