Appendix 4.1
Appendix 4.1 a Powered Mechanical Equipment (PME) for the Different Construction Tasks during Normal Daytime Working Hours (Unmitigated Scenario)
1.0 Dredging for 2nd Berth (Stage 2)
| Powered Mechanical Equipment (PME) | TM Ref./ other Ref. | Scen 1 No. Items | SWL/Item dB(A) | On-time % | Total SWL dB(A) |
|---|---|---|---|---|---|
| Grab Dredgers | CNP063 | 2 | 112 | 100.0% | 115 |
| Derrick Lighters | CNP061 | 2 | 104 | 100.0% | 107 |
| Tug Boats | CNP221 | 2 | 110 | 100.0% | 113 |
Total 118
2.0 Building Construction (per site)
Foundation (Basement excavation + piling + concreting)
| Powered Mechanical Equipment (PME) | TM Ref./ other Ref. | Scen 1 No. Items | SWL/Item dB(A) | On-time % | Total SWL dB(A) |
|---|---|---|---|---|---|
| Piling Rig (RCD) | CNP 166 | 3 | 100 | 100.0% | 105 |
| Excavator | CNP 081 | 2 | 112 | 100.0% | 115 |
| Compressor | CNP 002 | 2 | 102 | 100.0% | 105 |
| Concrete Pump | CNP 047 | 1 | 109 | 100.0% | 109 |
| Concrete Truck | CNP 044 | 1 | 109 | 100.0% | 109 |
| Poker Vibrator | CNP170 | 1 | 113 | 100.0% | 113 |
| Bar Bender | CNP 021 | 2 | 90 | 100.0% | 93 |
Total 119
Building Construction
| Powered Mechanical Equipment (PME) | TM Ref./ other Ref. | Scen 1 No. Items | SWL/Item dB(A) | On-time % | Total SWL dB(A) |
|---|---|---|---|---|---|
| Tower Crane | CNP 049 | 2 | 95 | 100.0% | 98 |
| Concrete Pump | CNP 047 | 1 | 109 | 100.0% | 109 |
| Concrete Truck | CNP 044 | 1 | 109 | 100.0% | 109 |
| Poker Vibrator | CNP 170 | 1 | 113 | 100.0% | 113 |
| Compressor | CNP 002 | 1 | 102 | 100.0% | 102 |
| Excavator | CNP 081 | 1 | 112 | 100.0% | 112 |
| Bar Bender | CNP 021 | 2 | 90 | 100.0% | 93 |
Total 117
Note: Scen 1 -Concreting Scen 2 -Others
Appendix 4.1b Calculation of Construction Noise Levels at Representative Noise Sensitive Receivers During Normal Daytime Working Hours (Unmitigated Scenario)
| Corrected | |||||
| NSR | Activity | Distance (m) | Distance Corr., dB(A) | Total SWL, dB(A) | Noise Level, dB(A) |
| N1 | Dredging for 2nd Berth | 303.7 | 57.6 | 118 | 63 |
| Building Construction -Southern Site (Foundation Stage) | 119 | 74 | |||
| Building Construction -Southern Site (Superstructure Stage) | 98.0 | 47.8 | 117 | 73 | |
| Building Construction -Northern Site (Foundation Stage) | 402.5 | 60.1 | 119 | 62 | |
| Building Construction -Northern Site (Superstructure Stage) | 117 | 60 | |||
| N2 | Dredging for 2nd Berth | 354.1 | 59.0 | 118 | 62 |
| Building Construction -Southern Site (Foundation Stage) | 154.0 | 51.7 | 119 | 70 | |
| Building Construction -Southern Site (Superstructure Stage) | 117 | 69 | |||
| Building Construction -Northern Site (Foundation Stage) | 147.6 | 51.4 | 119 | 70 | |
| Building Construction -Northern Site (Superstructure Stage) | 117 | 69 |
| Scenario | Cumulative Predicted Noise Level,dB(A) | ||
|---|---|---|---|
| N1 | N2 | ||
| 1 | Dredging Activity + Both building sites under Foundation Stage + Cruise Terminal Foundation Stage | 74 | 73 |
| 2 | Dredging Activity + Both building sites under Foundation Stage + Cruise Terminal Superstructure Stage | 74 | 73 |
| 3 | Dredging Activity + Southern Site during Foundation Stage + Northern Site during Superstructure Stage + Cruise Terminal Foundation Stage | 74 | 73 |
| 4 | Dredging Activity + Southern Site during Foundation Stage + Northern Site during Superstructure Stage + Cruise Terminal Superstructure Stage | 74 | 73 |
| 5 | Dredging Activity + Southern Site during Superstructure Stage + Northern Site during Foundation Stage + Cruise Terminal Foundation Stage | 73 | 73 |
| 6 | Dredging Activity + Southern Site during Superstructure Stage + Northern Site during Foundation Stage + Cruise Terminal Superstructure Stage | 73 | 73 |
| 7 | Dredging Activity + Both building sites under Superstructure Stage + Cruise Terminal Foundation Stage | 73 | 72 |
| 8 | Dredging Activity + Both building sites under Superstructure Stage + Cruise Terminal Superstructure Stage | 73 | 72 |