Appendix 4.1A	Powered Mechanical Equipment (PME) for the Different Construction Tasks
	(Without Mitigation)
(1a) Road D1
Powered Mechanical Equipment	TM Ref./	No. Items	SWL/Item	On-time	Total SWL
(PME)	other Ref.		dB(A)	%	dB(A)
Excavator loader, wheeled/tracked	CNP 081	4	112.0	100.0%	118.0
Air Compressor	CNP 001	4	100.0	100.0%	106.0
Mobile Crane	CNP 048	2	112.0	100.0%	115.0
Crane Lorry	CNP 141	4	112.0	100.0%	118.0
Breaker, hand-held	CNP 024	4	108.0	100.0%	114.0
Grader	CNP 104	1	113.0	100.0%	113.0
Asphalt Paver	CNP 004	2	109.0	100.0%	112.0
Road Rollers	CNP 186	2	108.0	100.0%	111.0
Water Pump	CNP 281	4	88.0	100.0%	94.0
Generator, standard	CNP 101	4	108.0	100.0%	114.0
				Total	124.2
(2a) Road D8
Powered Mechanical Equipment	TM Ref./	No. Items	SWL/Item	On-time	Total SWL
(PME)	other Ref.		dB(A)	%	dB(A)
Excavator loader, wheeled/tracked	CNP 081	2	112.0	100.0%	115.0
Air Compressor	CNP 001	2	100.0	100.0%	103.0
Mobile Crane	CNP 048	1	112.0	100.0%	112.0
Crane Lorry	CNP 141	2	112.0	100.0%	115.0
Breaker, hand-held	CNP 024	2	108.0	100.0%	111.0
Grader	CNP 104	1	113.0	100.0%	113.0
Asphalt Paver	CNP 004	2	109.0	100.0%	112.0
Road Rollers	CNP 186	2	108.0	100.0%	111.0
Water Pump	CNP 281	2	88.0	100.0%	91.0
Generator, standard	CNP 101	2	108.0	100.0%	111.0
				Total	121.9
(3a) Reclamation
Powered Mechanical Equipment	TM Ref./	No. Items	SWL/Item	On-Time	Total SWL
(PME)	other Ref.		dB(A)	%	dB(A)
Sandfill Barge	CNP 061	1	104.0	100.0%	104.0
V Drains Rig	A	1	112.0	100.0%	112.0
P/Fill Barge	CNP 061	1	104.0	100.0%	104.0
Barges Derricks	CNP 061	1	104.0	100.0%	104.0
Backhoe	CNP 081	1	112.0	100.0%	112.0
General Breaker	CNP 024	1	108.0	100.0%	108.0
Excavator Loader	CNP 081	1	112.0	100.0%	112.0
				Total	117.9
(4a) Road P2 - Sand Blanket in Yr 2005
Powered Mechanical Equipment	TM Ref./	No. Items	SWL/Item	On-Time	Total SWL
(PME)	other Ref.		dB(A)	%	dB(A)
Grader	CNP 104	1	113.0	100.0%	113.0
Excavator	CNP 081	1	112.0	100.0%	112.0
Bulldozer	CNP 030	1	115.0	100.0%	115.0
Roller	CNP 186	1	108.0	100.0%	108.0
Dump Truck	CNP 067	1	117.0	100.0%	117.0
				Total	120.9
(5a) Road P2 - Prefabrical Band Drains in Yr 2005
Powered Mechanical Equipment	TM Ref./	No. Items	SWL/Item	On-Time	Total SWL
(PME)	other Ref.		dB(A)	%	dB(A)
Grader	CNP 104	1	113.0	100.0%	113.0
Excavator	CNP 081	1	112.0	100.0%	112.0
Bulldozer	CNP 030	1	115.0	100.0%	115.0
Roller	CNP 186	1	108.0	100.0%	108.0
Dump Truck	CNP 067	1	117.0	100.0%	117.0
				Total	120.9
(6a) Site Development per Sub-area
Powered Mechanical Equipment	TM Ref./	No. Items	SWL/Item	On-time	Total SWL
(PME)	other Ref.		dB(A)	%	dB(A)
Excavator loader, wheeled/tracked	CNP 081	2	112.0	100.0%	115.0
Air Compressor	CNP 001	2	100.0	100.0%	103.0
Mobile Crane	CNP 048	1	112.0	100.0%	112.0
Crane Lorry	CNP 141	4	112.0	100.0%	118.0
Breaker, hand-held	CNP 024	4	108.0	100.0%	114.0
Concrete Vibrator	CNP 170	4	113.0	100.0%	119.0
Piling, large bored	CNP 166	2	100.0	100.0%	103.0
Water Pump	CNP 281	4	88.0	100.0%	94.0
Generator, standard	CNP 101	4	108.0	100.0%	114.0
				Total	123.9
(7a)Seawall Construction
Powered Mechanical Equipment	TM Ref.	No. Items	SWL/Item	On-Time	Total SWL
(PME)			dB(A)	%	dB(A)
Derrick barge	CNP 141	2	104.0	100.0%	107.0
Mobile Crane	CNP 048	2	112.0	100.0%	115.0
Grab dredger	CNP 063	2	112.0	100.0%	115.0
				Total	118.4
(8a)Piling Works for Noise Barrier
Powered Mechanical Equipment	TM Ref./	No. Items	SWL/Item	On-time	Total SWL
(PME)	other Ref.		dB(A)	%	dB(A)
Air Compressor	CNP 002	1	102.0	100.0%	102.0
Mobile Crane	CNP 048	1	112.0	100.0%	112.0
Crane Lorry	CNP 141	1	112.0	100.0%	112.0
Breaker, hand-held	CNP 024	1	108.0	100.0%	108.0
Concrete vibrator	CNP 170	2	113.0	100.0%	116.0
Piling rig	CNP 166	1	100.0	100.0%	100.0
Generator, standard	CNP 102	1	100.0	100.0%	100.0
Concrete truck	CNP 044	1	109.0	100.0%	109.0
Dump truck	CNP 067	1	117.0	100.0%	117.0
Backhoe	CNP 081	1	112.0	100.0%	112.0
				Total	121.9
Calculation of sound pressure levels at the NSR due to Filling Trucks
Equation D6 of BS 5228 "Method for mobile plant using a regular well defined route" is adopted
LAeq = SWL - 33 + 10logQ - 10logV - 10logd
For roadwork EXCEPT ROAD P2 and site development, 4 Dump Trucks per hour was assumed in the assessment
Assume the speed of the Dump Trucks are 50 km/hr.
The distance (d) of receiving position from the centre of haul road is assumed as same as the distance from notional source
The sound power level of a dump truck = 117 dB(A)
For Reclamation, 11 Filling Trucks per hour on each sub-area;
Assume the speed of the Filling Trucks are 50 km/hr.
The distance (d) of receiving position from the centre of haul road is assumed as same as the distance from notional source
The sound power level of Filling Trucks = 117 dB(A)