|
Appendix 4.3 Tentative Construction Programme (Chlorination Plant & Pipe Trough at SCISTW) |
|
|
|
|
||||||||||||||||||||||||||
|
|
2008 |
2009 |
||||||||||||||||||||||||||||
|
|
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
|||||||||||
|
Site formation & site establishment |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||
|
Excavation and backfilling |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||||||||
|
Erection of formwork, reinforcement fixing & concreting |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||||||||
|
Fabrication of steelwork |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||||||||
|
Installation of E&M equipment |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||||||||
|
Testing and commissioning |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
Appendix 4.3 Tentative Construction Programme (Day Tank at SCISTW) |
|
|
|
|
|
|
|
|
|
|
||||||||||||||||||||
|
|
2008 |
2009 |
||||||||||||||||||||||||||||
|
|
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
|||||||||||
|
Site formation & site establishment |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||
|
Excavation and backfilling |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||||||||
|
Piling |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||||||||
|
Erection of formwork, reinforcement fixing & concreting |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||||||||
|
Installation of E&M equipment |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||||||||
|
Testing and commissioning |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||||||||
Construction Noise Impact Assessment
|
Powered Mechanical Equipment (PME) for Different Construction Tasks during |
|
|
||||||
|
Normal Daytime Working Hours (Unmitigated Scenario) |
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
Proposed Chlorination Plant and Day Tank |
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
Site formation & site establishment |
|
|
|
|
|
|
|
|
|
Powered Mechanical Equipment |
|
|
TM Ref./ |
|
SWL/Item |
On-time |
Noise Barrier |
Total SWL |
|
(PME) |
|
|
other Ref. |
|
dB(A) |
% |
Reduction |
dB(A) |
|
Breaker, excavator mounted |
- |
- |
CNP028 |
1 |
122 |
100% |
0 |
122 |
|
Excavator |
- |
- |
CNP081 |
1 |
112 |
100% |
0 |
112 |
|
Dump Truck |
- |
- |
CNP067 |
1 |
117 |
100% |
0 |
117 |
|
Air Compressor |
- |
- |
CNP002 |
1 |
102 |
100% |
0 |
102 |
|
Generator |
- |
- |
CNP102 |
1 |
100 |
100% |
0 |
100 |
|
|
|
|
|
|
|
|
Total |
124 |
|
|
|
|
|
|
|
|
|
|
|
Pilling Work (For Day Tank Only) |
|
|
|
|
|
|
|
|
|
Powered Mechanical Equipment |
|
|
TM Ref./ |
No. Items |
SWL/Item |
On-time |
Noise Barrier |
Total SWL |
|
(PME) |
|
|
other Ref. |
|
dB(A) |
% |
Reduction |
dB(A) |
|
Piling, large diameter bored |
- |
- |
CNP164 |
1 |
115 |
100% |
0 |
115 |
|
Mobile Crane |
- |
- |
CNP048 |
1 |
112 |
100% |
0 |
112 |
|
Water pump |
- |
- |
CNP281 |
1 |
88 |
100% |
0 |
88 |
|
Air Compressor |
- |
- |
CNP002 |
1 |
102 |
100% |
0 |
102 |
|
Concrete Pump |
- |
- |
CNP047 |
1 |
109 |
100% |
0 |
109 |
|
Bar Bender and cutter |
- |
- |
CNP021 |
1 |
90 |
100% |
0 |
90 |
|
Generator |
- |
- |
CNP102 |
1 |
100 |
100% |
0 |
100 |
|
|
|
|
|
|
|
|
Total |
118 |
|
|
|
|
|
|
|
|
|
|
|
Excavation and backfilling |
|
|
|
|
|
|
|
|
|
Powered Mechanical Equipment |
|
|
TM Ref./ |
No. Items |
SWL/Item |
On-time |
Noise Barrier |
Total SWL |
|
(PME) |
|
|
other Ref. |
|
dB(A) |
% |
Reduction |
dB(A) |
|
Dump Truck |
- |
- |
CNP067 |
1 |
117 |
100% |
0 |
117 |
|
Excavator |
- |
- |
CNP081 |
1 |
112 |
100% |
0 |
112 |
|
Generator |
- |
- |
CNP102 |
1 |
100 |
100% |
0 |
100 |
|
Air Compressor |
- |
- |
CNP002 |
1 |
102 |
100% |
0 |
102 |
|
Breaker, excavator mounted |
- |
- |
CNP028 |
1 |
122 |
100% |
0 |
122 |
|
|
|
|
|
|
|
|
Total |
124 |
|
|
|
|
|
|
|
|
|
|
|
Erection of formwork, reinforcement fixing & concreting |
|
|
|
|
|
|||
|
Powered Mechanical Equipment |
|
|
TM Ref./ |
No. Items |
SWL/Item |
On-time |
Noise Barrier |
Total SWL |
|
(PME) |
|
|
other Ref. |
|
dB(A) |
% |
Reduction |
dB(A) |
|
Mobile Crane |
- |
- |
CNP048 |
1 |
112 |
100% |
0 |
112 |
|
Concrete Lorry Mixer |
- |
- |
CNP044 |
1 |
109 |
100% |
0 |
109 |
|
Bar Bender and cutter |
- |
- |
CNP021 |
1 |
90 |
100% |
0 |
90 |
|
Concete Pump |
- |
- |
CNP047 |
1 |
109 |
100% |
0 |
109 |
|
Poker |
- |
- |
CNP170 |
3 |
113 |
100% |
0 |
118 |
|
Chipper, hand held |
- |
- |
CNP043 |
1 |
112 |
100% |
0 |
112 |
|
Saw, circular wood |
- |
- |
CNP201 |
1 |
108 |
100% |
0 |
108 |
|
Generator |
- |
- |
CNP102 |
1 |
100 |
100% |
0 |
100 |
|
Air Compressor |
- |
- |
CNP002 |
1 |
102 |
100% |
0 |
102 |
|
|
|
|
|
|
|
|
Total |
121 |
|
|
|
|
|
|
|
|
|
|
|
Fabrication of steelwork (For Chlorination Plant Only) |
|
|
|
|
|
|||
|
Powered Mechanical Equipment |
|
|
TM Ref./ |
No. Items |
SWL/Item |
On-time |
Noise Barrier |
Total SWL |
|
(PME) |
|
|
other Ref. |
|
dB(A) |
% |
Reduction |
dB(A) |
|
Backhoe |
- |
- |
CNP081 |
1 |
112 |
100% |
0 |
112 |
|
Mobile Crane |
- |
- |
CNP048 |
1 |
112 |
100% |
0 |
112 |
|
Lorry |
- |
- |
CNP141 |
1 |
112 |
100% |
0 |
112 |
|
Generator |
- |
- |
CNP102 |
1 |
100 |
100% |
0 |
100 |
|
Air Compressor |
- |
- |
CNP002 |
1 |
102 |
100% |
0 |
102 |
|
|
|
|
|
|
|
|
Total |
117 |
|
|
|
|
|
|
|
|
|
|
|
Note: Except for piling work and fabrication of steelwork, a duplicate set of PME is assumed for construction of chlorination plant and day tank. |
||||||||
|
Powered Mechanical Equipment (PME) for Different Construction Tasks during Normal |
|
|
||||||
|
Daytime Working Hours (Mitigated Scenario - Use of Quiet Plant) |
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
Proposed Chlorination Plant and Day Tank |
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
Site formation & site establishment |
|
|
|
|
|
|
|
|
|
Powered Mechanical Equipment |
|
|
TM Ref./ |
|
SWL/Item |
On-time |
Noise Barrier |
Total SWL |
|
(PME) |
|
|
other Ref. |
|
dB(A) |
% |
Reduction |
dB(A) |
|
Breaker, excavator mounted |
[1] |
- |
C2/4 |
1 |
119 |
100% |
0 |
119 |
|
Excavator |
[1] |
- |
C3/97 |
1 |
105 |
100% |
0 |
105 |
|
Dump Truck |
[1] |
- |
C9/20 |
1 |
103 |
100% |
0 |
103 |
|
Air Compressor |
- |
- |
CNP002 |
1 |
102 |
100% |
0 |
102 |
|
Generator |
[1] |
- |
CNP 103 |
1 |
95 |
100% |
0 |
95 |
|
|
|
|
|
|
|
|
Total |
119 |
|
|
|
|
|
|
|
|
|
|
|
Pilling Work (For Day Tank Only) |
|
|
|
|
|
|
|
|
|
Powered Mechanical Equipment |
|
|
TM Ref./ |
No. Items |
SWL/Item |
On-time |
Noise Barrier |
Total SWL |
|
(PME) |
|
|
other Ref. |
|
dB(A) |
% |
Reduction |
dB(A) |
|
Piling, large diameter bored |
- |
- |
CNP164 |
1 |
115 |
100% |
0 |
115 |
|
Mobile Crane |
[1] |
- |
C7/114 |
1 |
101 |
100% |
0 |
101 |
|
Water pump |
- |
- |
CNP281 |
1 |
88 |
100% |
0 |
88 |
|
Air Compressor |
- |
- |
CNP002 |
1 |
102 |
100% |
0 |
102 |
|
Concete Pump |
[1] |
- |
C6/36 |
1 |
106 |
100% |
0 |
106 |
|
Bar Bender and cutter |
- |
- |
CNP021 |
1 |
90 |
100% |
0 |
90 |
|
Generator |
[1] |
- |
CNP 103 |
1 |
95 |
100% |
0 |
95 |
|
|
|
|
|
|
|
|
Total |
116 |
|
|
|
|
|
|
|
|
|
|
|
Excavation and backfilling |
|
|
|
|
|
|
|
|
|
Powered Mechanical Equipment |
|
|
TM Ref./ |
No. Items |
SWL/Item |
On-time |
Noise Barrier |
Total SWL |
|
(PME) |
|
|
other Ref. |
|
dB(A) |
% |
Reduction |
dB(A) |
|
Dump Truck |
[1] |
- |
C9/20 |
1 |
103 |
100% |
0 |
103 |
|
Excavator |
[1] |
- |
C3/97 |
1 |
105 |
100% |
0 |
105 |
|
Generator |
[1] |
- |
CNP 103 |
1 |
95 |
100% |
0 |
95 |
|
Air Compressor |
- |
- |
CNP002 |
1 |
102 |
100% |
0 |
102 |
|
Breaker, excavator mounted |
[1] |
- |
C2/4 |
1 |
119 |
100% |
0 |
119 |
|
|
|
|
|
|
|
|
Total |
119 |
|
|
|
|
|
|
|
|
|
|
|
Erection of formwork, reinforcement fixing & concreting |
|
|
|
|
|
|||
|
Powered Mechanical Equipment |
|
|
TM Ref./ |
No. Items |
SWL/Item |
On-time |
Noise Barrier |
Total SWL |
|
(PME) |
|
|
other Ref. |
|
dB(A) |
% |
Reduction |
dB(A) |
|
Mobile Crane |
[1] |
- |
C7/114 |
1 |
101 |
100% |
0 |
101 |
|
Concrete Lorry Mixer |
[1] |
- |
C6/23 |
1 |
100 |
100% |
0 |
100 |
|
Bar Bender and cutter |
- |
- |
CNP021 |
1 |
90 |
100% |
0 |
90 |
|
Concete Pump |
[1] |
- |
C6/36 |
1 |
106 |
100% |
0 |
106 |
|
Poker |
[1] |
- |
C6/32 |
3 |
100 |
100% |
0 |
105 |
|
Chipper, hand held |
- |
- |
CNP043 |
1 |
112 |
100% |
0 |
112 |
|
Saw, circular wood |
- |
- |
CNP201 |
1 |
108 |
100% |
0 |
108 |
|
Generator |
[1] |
- |
CNP 103 |
1 |
95 |
100% |
0 |
95 |
|
Air Compressor |
- |
- |
CNP002 |
1 |
102 |
100% |
0 |
102 |
|
|
|
|
|
|
|
|
Total |
115 |
|
|
|
|
|
|
|
|
|
|
|
Fabrication of steelwork (For Chlorination Plant Only) |
|
|
|
|
|
|||
|
Powered Mechanical Equipment |
|
|
TM Ref./ |
No. Items |
SWL/Item |
On-time |
Noise Barrier |
Total SWL |
|
(PME) |
|
|
other Ref. |
|
dB(A) |
% |
Reduction |
dB(A) |
|
Backhoe |
[1] |
- |
C8/33 |
1 |
102 |
100% |
0 |
102 |
|
Mobile Crane |
[1] |
- |
C7/114 |
1 |
101 |
100% |
0 |
101 |
|
Lorry |
[1] |
- |
C3/59 |
1 |
105 |
100% |
0 |
105 |
|
Generator |
[1] |
- |
CNP 103 |
1 |
95 |
100% |
0 |
95 |
|
Air Compressor |
- |
- |
CNP002 |
1 |
102 |
100% |
0 |
102 |
|
|
|
|
|
|
|
|
Total |
109 |
|
Note: (1) Use of Quiet PME |
|
|
|
|
|
|
|
|
|
Except for piling work and fabrication of steelwork, a duplicate set of PME is assumed for construction of chlorination plant and day tank. |
||||||||
|
|
|
|
|
|
|
|
|
|
|
Calculation of Construction Noise Levels at Representative NSR - Unmitigated Scenario |
|
|
|
|
|
|
|
|
||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
NSR: P1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
(Chlorination Plant) |
|
|
|
2008 |
2009 |
|||||||||||||||||
|
|
SWL |
Distance |
SPL |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
|
Site formation & site establishment |
124 |
330 |
68 |
68 |
68 |
68 |
68 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Excavation and backfilling |
124 |
330 |
68 |
|
|
|
|
68 |
68 |
68 |
|
|
|
|
|
|
|
|
|
|
|
|
|
Erection of formwork, reinforcement fixing & concreting |
121 |
330 |
65 |
|
|
|
|
|
|
65 |
65 |
65 |
65 |
|
|
|
|
|
|
|
|
|
|
Fabrication of steelwork |
117 |
330 |
62 |
|
|
|
|
|
|
|
|
62 |
62 |
62 |
62 |
62 |
62 |
62 |
|
|
|
|
|
Installation of E&M equipment # |
- |
- |
- |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
- |
- |
- |
- |
|
|
Testing and commissioning # |
- |
- |
- |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
- |
- |
- |
|
|
Total SPL, dB(A) |
68 |
68 |
68 |
68 |
68 |
68 |
70 |
65 |
67 |
67 |
62 |
62 |
62 |
62 |
62 |
- |
- |
- |
- |
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
NSR: P1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
(Day Tank) |
|
|
|
2008 |
2009 |
|||||||||||||||||
|
|
SWL |
Distance |
SPL |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
|
Site formation & site establishment |
124 |
530 |
64 |
64 |
64 |
64 |
64 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Excavation and backfilling |
124 |
530 |
64 |
|
|
|
|
64 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Piling (probably mini-pile) |
118 |
530 |
58 |
|
|
|
|
|
58 |
58 |
58 |
|
|
|
|
|
|
|
|
|
|
|
|
Erection of formwork, reinforcement fixing & concreting |
121 |
530 |
61 |
|
|
|
|
|
|
|
|
61 |
61 |
61 |
61 |
|
|
|
|
|
|
|
|
Installation of E&M equipment # |
- |
- |
- |
|
|
|
|
|
|
|
|
|
|
|
|
- |
- |
|
|
|
|
|
|
Testing and commissioning # |
- |
- |
- |
|
|
|
|
|
|
|
|
|
|
|
|
|
- |
- |
- |
- |
- |
- |
|
|
Total SPL, dB(A) |
64 |
64 |
64 |
64 |
64 |
58 |
58 |
58 |
61 |
61 |
61 |
61 |
62 |
- |
- |
- |
- |
- |
- |
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Cumulative SPL at NSR P1 (Chorination Plant + Day Tank) |
|
70 |
70 |
70 |
70 |
70 |
69 |
70 |
66 |
68 |
68 |
64 |
64 |
65 |
62 |
62 |
- |
- |
- |
- |
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
# As advised by DSD, no PME would be required for installation of E&M equipment and testing & commissiong |
|
|
|
|
|
|
||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Calculation of Construction Noise Levels at Representative NSR - Mitigated Scenario |
|
|
|
|
|
|
|
|
||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
NSR: P1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
(Chlorination Plant) |
|
|
|
2008 |
2009 |
|||||||||||||||||
|
|
SWL |
Distance |
SPL |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
|
Site formation & site establishment |
119 |
330 |
64 |
64 |
64 |
64 |
64 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Excavation and backfilling |
119 |
330 |
64 |
|
|
|
|
64 |
64 |
64 |
|
|
|
|
|
|
|
|
|
|
|
|
|
Erection of formwork, reinforcement fixing & concreting |
115 |
330 |
60 |
|
|
|
|
|
|
60 |
60 |
60 |
60 |
|
|
|
|
|
|
|
|
|
|
Fabrication of steelwork |
109 |
330 |
54 |
|
|
|
|
|
|
|
|
54 |
54 |
54 |
54 |
54 |
54 |
54 |
|
|
|
|
|
Installation of E&M equipment # |
- |
- |
- |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
- |
- |
- |
- |
|
|
Testing and commissioning # |
- |
- |
- |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
- |
- |
- |
|
|
Total SPL, dB(A) |
64 |
64 |
64 |
64 |
64 |
64 |
65 |
60 |
61 |
61 |
54 |
54 |
54 |
54 |
54 |
- |
- |
- |
- |
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
NSR: P1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
(Day Tank) |
|
|
|
2008 |
2009 |
|||||||||||||||||
|
|
SWL |
Distance |
SPL |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
|
Site formation & site establishment |
119 |
530 |
60 |
60 |
60 |
60 |
60 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Excavation and backfilling |
119 |
530 |
60 |
|
|
|
|
60 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Piling (probably mini-pile) |
116 |
530 |
56 |
|
|
|
|
|
56 |
56 |
56 |
|
|
|
|
|
|
|
|
|
|
|
|
Erection of formwork, reinforcement fixing & concreting |
115 |
530 |
56 |
|
|
|
|
|
|
|
|
56 |
56 |
56 |
56 |
|
|
|
|
|
|
|
|
Installation of E&M equipment # |
- |
- |
- |
|
|
|
|
|
|
|
|
|
|
|
|
- |
- |
|
|
|
|
|
|
Testing and commissioning # |
- |
- |
- |
|
|
|
|
|
|
|
|
|
|
|
|
|
- |
- |
- |
- |
- |
- |
|
|
Total SPL, dB(A) |
60 |
60 |
60 |
60 |
60 |
56 |
56 |
56 |
56 |
56 |
56 |
56 |
- |
- |
- |
- |
- |
- |
- |
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Cumulative SPL at NSR P1 (Chorination Plant + Day Tank) |
|
65 |
65 |
65 |
65 |
65 |
65 |
66 |
61 |
62 |
62 |
58 |
58 |
54 |
54 |
54 |
- |
- |
- |
- |
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
# As advised by DSD, no PME would be required for installation of E&M equipment and testing & commissiong |
|
|
|
|
|
|
||||||||||||||||