Advance Works for Telegraph Bay Development Sample Clauses
Advance Works for Telegraph Bay Development. 4.6.3.1.1 The advance works comprise the following activities and will be carried out in accordance with the schedule outlined in Table 4.11a (refer to Figure 2.3 for reclamation areas): • Activity 1 – Site clearance; • Activity 2 – Pre-drilling and installation of band drains; • Activity 3 – Importation and deposition of sand fill; • Activity 4 – Importation and deposition of pubic fill; • Activity 5 – Surcharging period; • Activity 6 – Disposal of surplus material; and • Activity 7 – Construction of box culvert (in Site 1). Site 4 (area 4 & 5) Act 1 Act 2 Act 3 Act 4 Act 5 Act 6 Site 3 (area 4 & 5) Act 1 Act 2 Act 3 Act 4 Act 5 Act 6 Site 4 (remaining) Act 1 Act 2 Act 3 Act 4 Act 5 Act 6 Site 3 (remaining) Act 1 Act 2 Act 3 Act 4 Act 5 Act 6 Site 2 Act 1 Act 2 Act 3 Act 4 Act 5 Act 6 Site 1 Act 7 Act 7 Act 7 Act 7 Note:
Act 1 – Site clearance; Act 2 – Pre-drilling and installation of band drain; Act 3 – Importation and deposition of sand fill; Act 4 – Importation and deposition of pubic fill; Act 5 –Surcharging period; Act 6 – Disposal of surplus material; and Act 7 – Construction of box culvert.
4.6.3.1.2 The nearby ASRs identified for this assessment are given in Figure 4.1. The highest 1-hour and 24-hour average TSP concentrations predicted for the ASRs are given in Tables 4.11b and 4.11c, respectively.
4.6.3.1.3 It is noted that the unmitigated 1-hr TSP criterion of 500μg/m3 and the 24-hour AQO of 260μg/m3 are both exceeded at SR 19, SR27 and SR41 (Baguio Villas, Kong Sin Wan Tsuen and Telegraph Bay Playground). SR5 99 90 107 98 100 100 91 89 88 101 SR8 126 98 154 126 130 130 101 93 92 135 SR9 128 102 154 133 131 130 108 97 93 141 SR10 118 97 139 119 120 120 100 93 91 126 SR19 392 313 559 568 349 429 347 232 124 513 SR21 87 87 87 87 87 87 87 87 87 87 SR23 234 170 311 276 272 248 221 157 115 293 SR27 295 197 395 357 330 307 255 171 125 378 SR24 1318 1013 1697 1753 1464 1284 1304 777 370 1642 SR28 ▇▇▇ ▇▇▇ ▇▇▇ 297 262 243 233 165 116 306 SR40 ▇▇▇ ▇▇▇ ▇▇▇ 305 284 266 223 155 118 324 Note:
1. Bold figures indicate exceedance of the 1-hr TSP criterion 500μg/m3 .
2. Background concentration: TSP 87μg/m3 . SR5 92 88 96 92 93 93 89 88 88 94 SR8 105 92 118 105 107 107 93 90 89 109 SR9 106 94 ▇▇▇ ▇▇▇ ▇▇▇ 107 97 92 90 112 SR10 101 91 111 102 102 102 93 90 89 105 SR19 227 191 304 308 208 244 207 154 104 283 SR21 87 87 87 87 87 87 87 87 87 87 SR23 155 125 190 174 172 161 149 119 100 182 SR27 183 138 228 211 199 188 164 126 104 221 SR24 653 513 828 854 721 638 647 ...
Advance Works for Telegraph Bay Development. 4.6.5.1.1 Tables 4.11b and 4.11c indicate that the TSP concentrations at Baguio Villas, Kong Sin Wan Tsuen and Telegraph Bay Playground exceeded the relevant criteria during advance works. The following mitigation measures are proposed for all phases apart from Phase 9 (surcharge period): • Regular watering (with complete coverage) of all unpaved access roads; • Reduce speed control of access roads from 20 km/hr to 10 km/hr; and • Covering/dampening of stockpiles above 50m3 in volume in dry and windy conditions.
4.6.5.1.2 The implementation of the proposed dust mitigation measures will reduce dust concentrations such that the established criteria will be met at all the identified nearby ASRs. Predicted 1-hour and 24-hour TSP concentrations after the incorporation of the mitigation measures are listed in Tables 4.15a and 4.15b below. SR5 88 88 88 88 88 88 88 88 n/a 88 SR8 90 90 90 90 91 91 90 90 n/a 91 SR9 91 90 91 91 91 91 91 90 n/a 91 SR10 90 89 90 90 90 90 89 89 n/a 90 SR19 111 106 109 110 112 111 106 105 n/a 113 SR21 87 87 87 87 87 87 87 87 n/a 87 SR23 104 105 103 108 106 87 104 102 n/a 107 SR27 110 111 108 115 112 104 109 107 n/a 113 SR24 258 327 246 351 261 109 251 237 n/a 267 SR28 103 106 103 109 105 251 105 103 n/a 106 SR40 106 107 104 110 107 105 106 104 n/a 108 SR41 ▇▇▇ ▇▇▇ ▇▇▇ 446 309 106 297 281 n/a 316 Note:
1. 1 hr TSP criterion 500μg/m3 .
Advance Works for Telegraph Bay Development. 5.4.3.1.1 The advance works for the development will be conducted by Civil Engineering Department (CED) port division. Advance works for the development include site clearance, predrilling and installation of band drain, excavation /surcharging works and the construction of box culvert. The surcharge works have been scheduled for Sites 2, 3 and 4 only. An underground box culvert across Site 1 will have to be constructed during the advance works stage to substitute the existing surface water body in Site 1 to provide the necessary stormwater drainage connection for Kong Sin Wan and the outfall no.
1. It is understood from CED that the works are likely to be divided into 10 phases with the preliminary schedule as presented in Table 5.4, the schedule is adopted for the purpose of this study. The areas where surcharge works will be carried out are given in Figure 5.8.
5.4.3.1.2 The different types of work to be carried out during the advance works have been labelled as follow : • Activity 1 - Site clearance; • Activity 2 - Predrilling and installation of band drains; • Activity 3 - Importation and deposition of sandfill; • Activity 4 - Importation and deposition of public fill; • Activity 5 - Surcharging period • Activity 6 - Disposal of surplus materials; and • Activity 7 - Box culvert construction (across Site 1) Site 4 (area 4 & 5) Act 1 Act 2 Act 3 Act 4 Act 5 Act 6 Site 3 (area 4 & 5) Act 1 Act 2 Act 3 Act 4 Act 5 Act 6 Site 4 (remaining) Act 1 Act 2 Act 3 Act 4 Act 5 Act 6 Site 3 (remaining) Act 1 Act 2 Act 3 Act 4 Act 5 Act 6 Site 2 Act 1 Act 2 Act 3 Act 4 Act 5 Act 6 Site 1 Act 7 Act 7 Act 7 Act 7 Note:
Act 1 – Site clearance; Act 2 – Pre-drilling and installation of band drain; Act 3 – Importation and deposition of sand fill; Act 4 – Importation and deposition of pubic fill; Act 5 –Surcharging period; Act 6 – Disposal of surplus material; and Act 7 – Construction of box culvert.
5.4.3.1.3 A list of the powered mechanical equipment (PME) to be used during the advance works period, as well as the associated sound power levels (SWLs) are given in Appendix 5.1. The works schedule is given in Appendix 2.1.
5.4.3.1.4 The Predicted Noise Levels (PNL) are evaluated at different heights/storeys for each of the NSRs, the worst case PNLs are presented in Table 5.5. The PNL at Baguio Villas (SR 19) exceeds the assessment criteria during Phases III to VI, while Kong Sin Wan Village (SR27) exceeds during Phases I to IV. It is also observed that the Pok Fu ▇▇▇ Train...
Advance Works for Telegraph Bay Development. 5.4.5.1.1 As highlighted in Table 5.5, there will likely be some adverse impacts at Baguio Villas, Pok Fu ▇▇▇ Training School and Kong Sin Wan Tsuen during the first six phases of advance works. Models have been re-run to derive the appropriate measures for ameliorating the adverse noise impacts during these phases (I to VI). With adoption of quiet plant and a 3m barrier (or site hoarding) at the northern boundary of Site 1 (Figure 5.11), the noise criteria are met at all the identified NSRs (Table 5.10). Table 5.10 Advance Works – Predicted Noise Levels (With Mitigation – Adoption of Quiet Plant and 3m barrier along northern boundary of Site 1) Leq(30min) dB(A) Note:
(1) denotes school.
(2) Noise criteria - Residential 75 dB(A), Schools 70 dB(A) (65 dB(A) during examination periods).
(3) NA denotes the sensitive receivers are not affected by the works.