Table 3.17        Predicted Noise Levels, Lmax during 0800 to 2300 hours, for Future Operation Mode of Both Existing and Proposed New MFT Helipads

 

Scenario

Noise Source

Predicted Noise Level, Lmax dB(A)

The Bauhinia

Ka On Building

Talon Tower

Proposed new helipad

Existing Helipad

Total

Proposed new helipad

Existing Helipad

Total

Proposed new helipad

Existing Helipad

Total

3a

S76C+ (Idling) at Existing Helipad & S76C+ at Proposed new helipad (Approach from East)

83 (Takeoff)*

76 (Idling)

84

80 (Takeoff)*

77 (Idling)

82

81 (Hovering to landing)*

79 (Idling)

83

3b

S76C+ (Idling) at Existing Helipad & S76C+ at Proposed new helipad (Approach from West)

85 (Takeoff)*

78 (Idling)

85

83 (Approach)*

78 (Idling)

84

82 (Hovering to landing)*

77 (Idling)

83

4a

S76C+ at Existing Helipad (Approach from East) & S76C+ (idling) at Proposed new helipad

67 (Idling)

84 (Hovering to landing)*

84

70 (Idling)

82 (Takeoff)*

83

77 (Idling)

82 (Hovering to landing)*

83

4b

S76C+ at Existing Helipad (Approach from West) & S76C+ (idling) at Proposed new helipad

69 (Idling)

84 (Hovering to takeoff)*

84

72 (Idling)

86 (Hovering to landing)*

86

75 (Idling)

84 (Hovering to landing)*

84

            Note:    Asterisked values are assessed for the worst case scenario