| Calculation of Construction Noise Impact at the NSRs | ||||||||||||||
| NSR: | N1 - Hei Ling Chau Correctional Institution | |||||||||||||
| Horizontal | Vertical | Slant | Overall | Correction | ||||||||||
| Construction | Distance | Distance | Distance | SWL | Distance | Barrier | Façade | CNL | ||||||
| Location B: | ||||||||||||||
| B-1 | Transportation of plants | 640 | 60 | 643 | 117 | -64 | -10 | 3 | 46 | |||||
| B-2 | Rock breaking | 640 | 60 | 643 | 106 | -64 | -10 | 3 | 35 | |||||
| B-3 | Piling, Excavation, Soil nailing | 640 | 60 | 643 | 116 | -64 | -10 | 3 | 45 | |||||
| B-4 | Concreting | 640 | 60 | 643 | 113 | -64 | -10 | 3 | 42 | |||||
| B-5 | Transportation of turbine | 640 | 40 | 641 | 115 | -64 | -10 | 3 | 44 | |||||
| Wind Turbine Site | 740 | 10 | 740 | 123 | -65 | -10 | 3 | 51 | ||||||
| NSR: | N2 - Hei Ling Chau Addiction Treatment Centre (Annex) | |||||||||||||
| Horizontal | Vertical | Slant | Overall | Correction | ||||||||||
| Construction | Distance | Distance | Distance | SWL | Distance | Barrier | Façade | CNL | ||||||
| Location B: | ||||||||||||||
| B-1 | Transportation of plants | 75 | 5 | 75 | 117 | -46 | 0 | 3 | 74 | |||||
| B-2 | Rock breaking | 75 | 5 | 75 | 106 | -46 | 0 | 3 | 63 | |||||
| B-3 | Piling, Excavation, Soil nailing | 75 | 5 | 75 | 116 | -46 | 0 | 3 | 74 | |||||
| B-4 | Concreting | 75 | 5 | 75 | 113 | -46 | 0 | 3 | 71 | |||||
| B-5 | Transportation of turbine | 75 | 22 | 78 | 115 | -46 | 0 | 3 | 73 | |||||
| Wind Turbine Site | 380 | 60 | 385 | 123 | -60 | -10 | 3 | 57 | ||||||
| NSR: | N3 - Staff Quarters | |||||||||||||
| Horizontal | Vertical | Slant | Overall | Correction | ||||||||||
| Construction | Distance | Distance | Distance | SWL | Distance | Barrier | Façade | CNL | residual impact | |||||
| Along route (1) | ||||||||||||||
| R-1a | Slope cutting - rock breaking | 2 | 2 | 3 | 106 | -17 | -10 | 3 | 82 | 7 | ||||
| R-1b | Slope cutting - site clearence | 2 | 2 | 3 | 105 | -17 | -10 | 3 | 81 | 6 | ||||
| R-2 | Erection of temporary platform | 2 | 2 | 3 | 103 | -17 | -10 | 3 | 79 | 4 | ||||
| R-3a | Backfilling - compacting | 2 | 2 | 3 | 107 | -17 | -10 | 3 | 83 | 8 | ||||
| R-3b | Backfilling - excavation | 2 | 2 | 3 | 105 | -17 | -10 | 3 | 81 | 6 | ||||
| R-3c | Backfilling - site clearence | 2 | 2 | 3 | 105 | -17 | -10 | 3 | 81 | 6 | ||||
| (1) | Mitigated with quiet construction plant and noise barriers | |||||||||||||