Contents

Chapter Title Page

4. Noise Impact 4-1

4.1 Introduction________________________________________________________________ 4-1

4.2 Noise Legislations, Standards and Guidelines______________________________________ 4-1

4.3 Baseline Conditions__________________________________________________________ 4-7

4.4 Identification of Pollution Sources______________________________________________ 4-12

4.5 Assessment Methodology____________________________________________________ 4-15

4.6 Evaluation of the Noise Impacts________________________________________________ 4-24

4.7 Mitigation Measures_________________________________________________________ 4-37

4.8 Evaluation of Residual Impacts________________________________________________ 4-48

4.9 Environmental Monitoring and Audit____________________________________________ 4-51

4.10 Conclusion_______________________________________________________________ 4-51

Tables

Table 4.1:__ Noise Standards for Daytime Construction Activities 4-1

Table 4.2:__ Relevant Road Traffic Noise Standards for Planning Purposes 4-3

Table 4.3:__ Area Sensitivity Rating_ 4-3

Table 4.4:__ Acceptable Noise Level for Fixed Noise Source_ 4-4

Table 4.5___ Noise Criteria of Fixed Plant Noise_ 4-4

Table 4.6___ Noise Criteria of Fixed Plant Noise for the Outdoor Performance Venues 4-5

Table 4.7:__ Ground-borne Operational Noise Level Criteria_ 4-6

Table 4.8:__ Proposed Ground-borne Operational Noise Level Criteria for Special Venues in WKCD_ 4-7

Table 4.9:__ Representative Noise Sensitive Receivers 4-10

Table 4.10:_ Adjustment Factor for Building Coupling Loss (BCF) 4-21

Table 4.11:_ Adjustment Factor for Building Structure Attenuation (BSA) 4-21

Table 4.12:_ Building Structure Attenuation (BSA) for WKCD Study 4-22

Table 4.13:_ Building Structure Resonance (BSR) for WKCD Study 4-22

Table 4.14:_ K_rad (dB) at Different Location_ 4-23

Table 4.15:_ Conversion to Noise Factors 4-23

Table 4.16:_ Unmitigated Construction Airborne Noise Impact from this Project 4-25

Table 4.17__ Unmitigated Road Traffic Noise Impact in Year 2032 – Scenario with Interim Access at Austin Road West 4-26

Table 4.18__ Unmitigated Road Traffic Noise Impact in Year 2032 – Scenario with Permanent Access at Canton Road_ 4-27

Table 4.19:_ Summary of Fixed Plant Noise Sources 4-28

Table 4.20:_ SWLs of the Existing Fixed Plant and Fixed Plant from XRL projects 4-29

Table 4.21:_ Maximum Allowable SWLs of the Fixed Plant within WKCD_ 4-30

Table 4.22__ Predicted Outdoor Air Activity Noise Impact without Mitigation Measures 4-32

Table 4.23__ Predicted Ground-borne Noise Impact from XRL EIA_ 4-33

Table 4.24__ Predicted Ground-borne Noise Impact from WR-KSL_ 4-35

Table 4.25__ Predicted Ground-borne Noise Impact from AEL/TCL_ 4-35

Table 4.26__ Quieter PME Recommended for Adoption during Construction Phase_ 4-38

Table 4.27__ Noise Mitigation Measures for Certain PME during Construction Phase_ 4-39

Table 4.28:_ Mitigated Construction Airborne Noise Impact from this Project 4-41

Table 4.29:_ Overall Cumulative Construction Noise Impact 4-43

Table 4.30__ Summary of Benefitted and Protected Planned Dwellings (Interim Access at Austin Road West) 4-45

Table 4.31__ Summary of Benefitted and Protected Planned Dwellings (Permanent Access at Canton Road) 4-45

Table 4.32:_ Recommended At-receiver Noise Mitigation Measures for Residential Buildings 4-48

Table 4.33__ Assessment of Residual Impacts during Construction Phase_ 4-49