Project Title

Agreement No. CE 69/2001 (HY) Scott Wilson Ltd Tsuen Wan Bypass, Widening of Tsuen Wan Road between Tsuen Tsing October 2008 Interchange and Kwai Tsing Interchange and Associated Junction Improvement Works Environmental Impact Assessment

Table of Contents

3. NOISE IMPACTS...... 3-1 3.1 Introduction...... 3-1 3.2 Operational Noise...... 3-1 3.2.1 Environmental Legislations, Policies, Plans and Standards ...... 3-1 3.2.2 Noise Sensitive Receivers...... 3-1 3.2.3 Assessment Methodology...... 3-11 3.2.4 Prediction and Evaluation of Noise Impacts...... 3-16 3.2.5 Proposed Noise Mitigation Measures ...... 3-21 3.2.6 Assessment of Noise Impacts with the Application of Mitigation Measures...... 3-23 3.2.7 Residual Impact...... 3-33 3.2.8 Environmental Monitoring and Audit...... 3-33 3.2.9 Conclusions...... 3-34 3.3 Construction Noise...... 3-34 3.3.1 Environmental Legislations, Policies, Plans and Standards ...... 3-34 3.3.2 Assessment Methodology...... 3-35 3.3.3 Prediction and Evaluation of Noise Impacts...... 3-35 3.3.4 Proposed Noise Mitigation Measures ...... 3-40 3.3.5 Assessment of Noise Impacts with the Application of Mitigation Measures...... 3-43 3.3.6 Residual Impact...... 3-47 3.3.7 Environmental Monitoring and Audit...... 3-49 3.3.8 Conclusions...... 3-50

List of Tables

Table 3-1 Road Traffic Noise Assessment Criteria Specified in the EIAO-TM Table 3-2 Summary of the Identified Planned NSRs in the Project Table 3-3 Summary of Identified NSRs in the Project Table 3-4 Summary of Schools within Noise Assessment Area with Noise Mitigation Measures Table 3-5 Summary of Each Representative NSR Table 3-6 Summary of Traffic Data of Major Road Sections in the Project Table 3-7 Predicted Road Traffic Noise Levels at Each Identified NSR under the Unmitigated Scenario Table 3-8 Summary of Proposed Noise Mitigation Measures at Operational Phase for the Compliance of EIAO Noise Criteria Table 3-9 Predicted Road Traffic Noise Level at Each Identified NSR under the Mitigated Scenario Table 3-10 Total Number of Dwellings, Classrooms and Other Noise Sensitive Elements that will be Benefited From and be Protected by Provision of the Direct Noise Mitigation Measures Table 3-11 Predicted Construction Noise Levels at Representative NSRs during Normal Daytime Working Hours under the Unmitigated Scenario Table 3-12 Maximum SWLs for Selected “Quiet” and Alternative Plants

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Table 3-13 Predicted Construction Noise Levels at Representative NSRs during Normal Daytime Working Hours under the Mitigated Scenario Table 3-14 Residual Construction Noise Impact after Application of Noise Mitigation Measures

List of Figures Figure 3-1 DP Road Extents of the Project Figure 3-2 Assessment Areas for Noise Impact Assessment Figure 3-3 Locations of Representative Noise Sensitive Receivers Figure 3-4 Locations of Selected Noise Assessment Points at each NSR Figure 3-5 Locations and Cross Sections of Proposed Direct Noise Mitigation Measures for Road Traffic Noise at Operation Phase

List of Appendices Appendix 3-A Photos of Representative Noise Sensitive Receivers Appendix 3-B Building Layout Plans of Planned NSRs – Residential Developments at TW5, TW6, TW7 and TWTL 394 Appendix 3-C Photos of NSRs which are Government Aided Schools Appendix 3-D Source of Information Showing Government Aided Schools Under the “Noise Abatement Programme” Appendix 3-E Photos of NSRs with Window-type Air-conditioners Installed Appendix 3-F Source of Information Showing the Land Uses as Service Apartments with the Application of Central Air Conditioning for Chelsea Court (TWTL 373), Indi Home (TWTL 406) and H-Cube (TWTL 407) Appendix 3-G Correspondences for the Endorsement of the Final TIA Review Report Issued in January 2007 Appendix 3-H Traffic Forecast at Year 2010 and Year 2030 in the Final TIA Review Report Issued in January 2007 Appendix 3-I Locations and Photos of Existing Noise Mitigation Measures on Route 9 in Front of Summit Terrace and on Tsuen King Circuit Appendix 3-J Locations of Planned Noise Mitigation Measures on Tuen Mun Road and on Yeung Uk Road Appendix 3-K Correspondence for Information of Planned Noise Mitigation Measures and Low Noise Surfacing Pavement Appendix 3-L Typical Computer Plot of the “RoadNoise® 2000” Model Appendix 3-M Detailed Calculations for Construction Noise Impact Assessment and Complete PME Inventory Appendix 3-N Detailed Predicted Road Traffic Noise Results at Each Noise Assessment Point under the Unmitigated Scenario Appendix 3-O Detailed Predicted Road Traffic Noise Results at Each Noise Assessment Point under the Mitigated Scenario

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Appendix 3-P Correspondence Showing the Anticipated Development Completion Dates of Residential Development at TW5 and TW7

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3. NOISE IMPACTS 3.1 Introduction 3.1.1.1. Potential noise impact arising from the Project would be contributed by both construction and operational phase. This Chapter summarizes the identified potential sources of noise impact during the both phases, details of noise impact assessment and, where necessary, the recommended noise mitigation measures to reduce the identified noise impacts. 3.2 Operational Noise 3.2.1 Environmental Legislations, Policies, Plans and Standards 3.2.1.1. Road traffic noise criteria are listed in Table 1A, Annex 5 of the EIAO-TM, which provides guidance on acceptable road traffic noise levels at various types of noise sensitive buildings. The relevant criteria are shown in Table 3-1. These standards apply to uses which rely on opened windows for ventilation. Table 3-1 Road Traffic Noise Assessment Criteria Specified in the EIAO-TM Road Traffic Noise Assessment Criteria Uses – Peak Hour Traffic (L10,1 hour, dB(A)) All domestic premises including 70 temporary housing accommodation Hotels and hostels 70 Offices 70 Educational institutions including kindergartens, nurseries and all others 65 where unaided voice communication is required Places of public worship and courts of 65 law Hospitals, clinics, convalescences and homes for the aged, diagnostic rooms, 55 wards Note: The above standards apply to uses which rely on opened windows for ventilation.

3.2.1.2. Since the Project is a road improvement work in nature which does not include fixed noise sources such as ventilation systems of tunnels, noise impact generated by fixed noise sources is not anticipated. Noise impact during the operational phase is mainly contributed by road traffic noise. 3.2.2 Noise Sensitive Receivers Assessment Area 3.2.2.1. For operational noise impact assessment, a spatial scope of 300m from the proposed Project Boundary has been included as the Assessment Area. Road sections within the

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Assessment Area are classified into “roads under the Designated Project (DP roads)” or “roads not under the Designated Project (non-DP roads)” as follows: • DP road – A road which is an expressway, trunk road, primary distributor road or district distributor road including new roads and major extensions or improvements to existing roads, as defined under item A.1, Part I, Schedule 2 of the EIAO is considered as a designated project. Meanwhile, major extensions or road improvement means a physical addition, alternation or re-alignment to existing roads which results in an adverse environmental impact as defined in the EIAO- TM. An environmental impact is considered to be adverse if any factor listed in Annex 3 of the EIAO-TM applies and the criteria in Annexes 4 to 10 of the EIAO- TM may be violated. One of the criteria for assessing if the traffic noise impact would be considered significant is that the traffic noise level with the road project would be greater than that without the road project at the design year by 1.0 dB(A) or more; and • Non-DP road – A road section which is not classified as a DP road. 3.2.2.2. Figure 3-1 illustrates schematically the extent of DP roads in this Project. Figure 3-2 shows the Assessment Area for noise impact study in this Project. Noise Sensitive Receivers 3.2.2.3. Representative NSRs have been identified in accordance with Annexes 5 and 13 of the EIAO-TM. In general these are noise sensitive buildings within the Noise Assessment Area, including domestic premises, hostels, temporary housing accommodation, hospitals, medical clinics, educational institutions, places of public worship, libraries, courts of law or performing art centres, having direct line-of-sight and substantial angle of view to the Project Area. 3.2.2.4. Besides, a number of planned developments (planned NSRs) have been identified and reviewed with reference to the latest published Outline Zoning Plans (OZPs) available at the commencement of the assessment. These include the planned residential developments of the Mass Transit Railway Corporation (MTRC) at TW5, TW6, and TW7, a proposed school site at TW7, as well as Tsuen Wan Town Lot (TWTL) 394. Details of the identified planned NSRs are summarized in Table 3-2.

Table 3-2 Summary of the Identified Planned NSRs in the Project Item Descriptions Number of Speciality of Building Design on Buildings Noise Mitigation within Development 1 Residential 11 Single aspect design for six towers Development at TW5 adjacent to/ facing Tsuen Wan Road; Acoustic fins 2 Residential 2 No special noise mitigation Development at TW6 measure adopted

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Item Descriptions Number of Speciality of Building Design on Buildings Noise Mitigation within Development 3 Residential 7 Single aspect design for two Development at TW7 towers near Tsuen Tsing Interchange; Acoustic fins 4 Residential 2 No special noise mitigation Development at measure adopted Tsuen Wan Town Lot No. 394 5 Proposed School Site 1 No special noise mitigation at TW7 measure adopted

3.2.2.5. Details of the identified existing and planned NSRs are summarized in Table 3-3 and their locations are shown in Figure 3-3. Photographs of the existing NSRs are shown in Appendix 3-A. Floor plans of the identified planned NSRs including Residential Developments at TW5, TW6, TW7 and TWTL 394 are provided in Appendix 3-B.

Table 3-3 Summary of Identified NSRs in the Project

No. of Noise Sensitive Storeys Existing Planned NSR above NSR (Base NSR (Base ID Descriptions Land Use Podium/Site Level Year 2006) Year 2006) Remarks N1 Tsuen Tak Gardens Block A Residential 30 3 N2 Tsuen Tak Gardens Block B Residential 31 3 N3 Tsuen Tak Gardens Block C Residential 31 3 N4 Tsuen Tak Gardens Block D Residential 31 3 N5 Tsuen Tak Gardens Block E Residential 31 3 N6 Joyful Building Block A Residential 27 3 N7 Joyful Building Block B Residential 27 3 N8 Sheeny Terrace Residential 26 3 N9 Summit Terrace Block 1 Residential 39 3 N10 Summit Terrace Block 2 Residential 39 3 N11 Summit Terrace Block 3 Residential 40 3 N12 Summit Terrace Block 5 Residential 40 3 N13 Tsuen Wan Adventist Hospital Hospital 4 3 Tsuen Wan Adventist Hospital 3 N14 Residential 5 Staff Quarter N15 Allway Gardens Block A Residential 22 3 N16 Allway Gardens Block B Residential 22 3

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No. of Noise Sensitive Storeys Existing Planned NSR above NSR (Base NSR (Base ID Descriptions Land Use Podium/Site Level Year 2006) Year 2006) Remarks N17 Allway Gardens Block C Residential 22 3 3 No daytime Place of construction noise N18 Wang Fat Ching She 2 Worship criteria in EIAO- TM N19 The Panorama Residential 43 3 N20 Phase I Belvedere Garden Block 1 Residential 35 3 N21 Phase I Belvedere Garden Block 2 Residential 35 3 N22 Phase I Belvedere Garden Block 3 Residential 35 3 N23 Serenade Cove Block A Residential 33 3 N24 Serenade Cove Block B Residential 32 3 N25 Serenade Cove Block C Residential 33 3 Phase III Belvedere Garden 3 N26 Residential 41 Block 7 Phase III Belvedere Garden 3 N27 Residential 41 Block 6 Phase III Belvedere Garden 3 N28 Residential 41 Block 5 N29 Fu Yung House Residential 7 3 N30 Yen Wai Garden Residential 23 3 N31 Tak Yan Building Stage 15 Residential 6 3 N32 On Hong Building Residential 24 3 N33 Kan Fat Building Residential 5 3 N34 Heung Wo Building Residential 21 3 N35 On Fung Building Residential 20 3 3 Protected under "Noise Po On Commercial Association Abatement N36 Wong Siu Ching Secondary School 6 Programme in School schools", Stage IV N37 Tsuen Wan Plaza Block 1 Residential 30 3 N38 Tsuen Wan Plaza Block 2 Residential 30 3 3 Window glazing with window- Salvation Army Ng Kok Wai type air- N39 School 2 Memorial Kindergarten conditioners were noted on site visit N40 Clague Garden Estate Block A Residential 40 3 N41 Clague Garden Estate Block B Residential 40 3 N42 Clague Garden Estate Block C Residential 40 3

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No. of Noise Sensitive Storeys Existing Planned NSR above NSR (Base NSR (Base ID Descriptions Land Use Podium/Site Level Year 2006) Year 2006) Remarks N43 Skyline Plaza Residential 35 3 Development at TW5 Cityside 3 N44 Residential 50 Tower 10 Development at TW5 Cityside 3 N45 Residential 52 Tower 11 Development at TW5 Bayside 3 N46 Residential 49 Tower 1 Development at TW5 Bayside 3 N47 Residential 42 Tower 2 Development at TW5 Bayside 3 N48 Residential 42 Tower 3 Anticipated to be Development at TW5 Bayside 3 N49 Residential 39 completed by Tower 4 2015-2016[1] Development at TW5 Bayside 3 N50 Residential 39 Tower 5 Development at TW5 Bayside 3 N51 Residential 42 Tower 6 Development at TW5 Bayside 3 N52 Residential 42 Tower 7 Development at TW5 Bayside 3 N53 Residential 42 Tower 8 Development at TW5 Bayside 3 N54 Residential 42 Tower 9 N55 Vision City Tower 1 Residential 41 3 Formerly known 3 as Development N56 Vision City Tower 2 Residential 43 of Tsuen Wan Town Lot 398 N57 No. 57 Yeung Uk Road Residential 5 3 N58 No. 59-77 Yeung Uk Road Residential 5 3 3 No daytime construction N59 Tsuen Wan Caritas Clinic Clinic 4 noise criteria in EIAO-TM N60 No. 85-99 Yeung Uk Road Residential 4 3 N61 Harmony Garden Block 1 Residential 24 3 N62 Harmony Garden Block 2 Residential 24 3 Development at TWTL 394 N63 Residential 45 3 Tower 1 Development at TWTL 394 N64 Residential 45 3 Tower 2 N65 Development at TW6 Tower 1 Residential 48 3 Anticipated to 3 be completed N66 Development at TW6 Tower 2 Residential 46 by 2011-2012 N67 Development at TW7 Tower 1 Residential 44 3 Anticipated to

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No. of Noise Sensitive Storeys Existing Planned NSR above NSR (Base NSR (Base ID Descriptions Land Use Podium/Site Level Year 2006) Year 2006) Remarks N68 Development at TW7 Tower 2 Residential 44 3 be completed 3 by 2012 – N69 Development at TW7 Tower 3 Residential 44 2014[1] N70 Development at TW7 Tower 4 Residential 42 3 N71 Development at TW7 Tower 5 Residential 42 3 N72 Development at TW7 Tower 6 Residential 40 3 N73 Development at TW7 Tower 7 Residential 40 3 N74 Waterside Plaza Block 1 Residential 37 3 N75 Waterside Plaza Block 2 Residential 37 3 N76 Waterside Plaza Block 3 Residential 32 3 N77 Waterside Plaza Block 4 Residential 31 3 N78 Proposed School Site at TW7 School 6 3 Shak Chung Shan Memorial 3 N79 School 7 Catholic Primary School N80 Riviera Gardens Tower 1 Residential 31 3 N81 Riviera Gardens Tower 2 Residential 32 3 N82 Riviera Gardens Tower 3 Residential 36 3 N83 Riviera Gardens Tower 4 Residential 36 3 N84 Riviera Gardens Tower 17 Residential 34 3 N85 Riviera Gardens Tower 18 Residential 34 3 N86 Riviera Gardens Tower 19 Residential 30 3 N87 Riviera Gardens Tower 20 Residential 30 3 N88 Riviera Gardens Tower 21 Residential 30 3 N89 Riviera Gardens Tower 22 Residential 30 3 3 Protected under "Noise Abatement N90 S K H Chu Yan Primary School School 6 Programme in schools", Stage IV N91 Kwai Shing West Estate Block 6 Residential 17 3 N92 Kwai Shing West Estate Block 8 Residential 24 3 N93 Kwai Shing West Estate Block 9 Residential 21 3 N94 Kwai Shing West Estate Block 10 Residential 14 3 3 Window glazing with window- CNEC Lee I Yao Memorial type air- N95 School 5 Secondary School conditioners were noted on site visit N96 Hibiscus Park Block 1 Residential 35 3

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No. of Noise Sensitive Storeys Existing Planned NSR above NSR (Base NSR (Base ID Descriptions Land Use Podium/Site Level Year 2006) Year 2006) Remarks N97 Hibiscus Park Block 2 Residential 35 3 Note: 1. Latest completion programme for TW5 and TW7 are shown in Appendix 3-P

Existing Noise Sensitive Buildings with Noise Mitigation Measures 3.2.2.6. It is identified that two government-aided schools within the Noise Assessment Area – Po On Commercial Association Wong Siu Ching Secondary School (N36) and SKH Chu Yan Primary School (N90) are under the “Noise Abatement Programme in Schools” Stage IV. Meanwhile, it is noted on site visit that air-conditioners and window glazing have been equipped for other schools within the Noise Assessment Area. Summary of schools with noise mitigation measures are listed in Table 3-4. Site photos of existing government aided school NSRs are presented in Appendix 3-C. Source of the information for the “Noise Abatement Programme in Schools” Stage IV is attached in Appendix 3-D.

Table 3-4 Summary of Schools within Noise Assessment Area with Noise Mitigation Measures NSR Noise Mitigation Measures Schools No. Descriptions Po On Commercial Association “Noise Abatement Programme in N36 Wong Siu Ching Secondary School Schools” Stage IV S K H Chu Yan Primary School “Noise Abatement Programme in N90 Schools” Stage IV Shak Chung Shan Memorial Double-glazed window and window- N79 Catholic Primary School type air-conditioners noted on site visit CNEC Lee I Yao Memorial Double-glazed window and window- N95 Secondary School type air-conditioners noted on site visit

3.2.2.7. In addition, according to the site visit observation, window-type air-conditioners have been installed at Salvation Army Ng Kok Wai Memorial Kindergarten (N39), Tsuen Wan Adventist Hospital (N13) and Tsuen Wan Caritas Clinic (N59). Appendix 3-E shows the site conditions of these three NSRs. 3.2.2.8. Notwithstanding the provision of window-type air-conditioners and double-glazed windows as, since it is also possible for the schools and clinics abovementioned to rely on opened window ventilation, all schools and clinics within the Noise Assessment Area are still considered as NSRs for noise impact assessment. 3.2.2.9. On the other hand, Chelsea Court, H-Cube and Indi Home adjacent to Yeung Uk Road are designed as service apartments with centralized air-conditioning system. As such, it is considered that extraneous noise intrusion due to the road traffic has been minimized

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for these residential developments, and thus no excessive traffic noise level is anticipated. In this connection, these residential developments are not considered as NSRs. Source of information presenting the approval of service apartment design application by the Planning Department is attached in Appendix 3-F. Noise Assessment Points 3.2.2.10. Noise assessment points are selected at each identified NSR in the Project. Details of the selected noise assessment points are summarized in Table 3-5 and their locations are demonstrated in Figure 3-4.

Table 3-5 Summary of Each Representative NSR No. of Noise Sensitive No. of Noise Storeys above Podium Assessment NSR Podium/Site (P)/Site Level Points at ID Description Land Use Level (S) (mPD) Each Floor N1 Tsuen Tak Gardens Block A Residential 30 16.1 (P) 1 N2 Tsuen Tak Gardens Block B Residential 31 16.1 (P) 1 N3 Tsuen Tak Gardens Block C Residential 31 16.1 (P) 1 N4 Tsuen Tak Gardens Block D Residential 31 16.1 (P) 1 N5 Tsuen Tak Gardens Block E Residential 31 16.1 (P) 1 N6 Joyful Building Block A Residential 27 24.9 (P) 2 N7 Joyful Building Block B Residential 27 24.9 (P) 2 N8 Sheeny Terrace Residential 26 35.1 (P) 1 N9 Summit Terrace Tower 1 Residential 39 24.3 (P) 2 N10 Summit Terrace Tower 2 Residential 39 37.1 (P) 5 N11 Summit Terrace Tower 3 Residential 40 37.1 (P) 5 N12 Summit Terrace Tower 5 Residential 40 37.1 (P) 5 N13 Tsuen Wan Adventist Hospital Hospital 4 37.6 (S) 1 Tsuen Wan Adventist Hospital Staff N14 Residential 5 44.2 (S) 1 Quarter N15 Allway Gardens Block A Residential 22 57.1 (P) 1 N16 Allway Gardens Block B Residential 22 57.1 (P) 1 N17 Allway Gardens Block C Residential 22 57.1 (P) 1 N18 Wang Fat Ching She Place of Worship 2 25.3 (S) 2 N19 The Panorama Residential 43 30.4 (P) 10 N20 Phase I Belvedere Garden Block 1 Residential 35 18.0 (P) 9 N21 Phase I Belvedere Garden Block 2 Residential 35 18.0 (P) 1 N22 Phase I Belvedere Garden Block 3 Residential 35 18.0 (P) 1 N23 Serenade Cove Block A Residential 33 13.7 (P) 7 N24 Serenade Cove Block B Residential 32 13.7 (P) 9 N25 Serenade Cove Block C Residential 33 13.7 (P) 8 N26 Phase III Belvedere Garden Block 7 Residential 41 12.9 (P) 4

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No. of Noise Sensitive No. of Noise Storeys above Podium Assessment NSR Podium/Site (P)/Site Level Points at ID Description Land Use Level (S) (mPD) Each Floor N27 Phase III Belvedere Garden Block 6 Residential 41 12.9 (P) 1 N28 Phase III Belvedere Garden Block 5 Residential 41 17.1 (P) 1 N29 Fu Yung House Residential 7 4.0 (S) 2 N30 Yen Wai Garden Residential 23 13.6 (P) 2 N31 Tak Yan Building Stage 15 Residential 6 4.0 (S) 1 N32 On Hong Building Residential 24 10.8 (P) 2 N33 Kan Fat Building Residential 5 4.0 (S) 1 N34 Heung Wo Building Residential 21 13.6 (P) 1 N35 On Fung Building Residential 20 13.6 (P) 1 N36 Wong Siu Ching Secondary School School 6 4.0 (S) 2 N37 Tsuen Wan Plaza Block 1 Residential 30 24 (P) 7 N38 Tsuen Wan Plaza Block 2 Residential 30 24 (P) 7 Salvation Army Ng Kok Wai N39 School 2 5.1 (S) 2 Memorial Kindergarten N40 Clague Garden Estate Block A Residential 40 4.0 (S) 12 N41 Clague Garden Estate Block B Residential 40 4.0 (S) 12 N42 Clague Garden Estate Block C Residential 40 4.0 (S) 12 N43 Skyline Plaza Residential 35 23.4 (P) 10 Development at TW5 Cityside N44 Residential 50 33.2 (P) 4 Tower 10 Development at TW5 Cityside N45 Residential 52 33.2 (P) 4 Tower 11 Development at TW5 Bayside N46 Residential 49 30.6 (P) 4 Tower 1 Development at TW5 Bayside N47 Residential 42 30.6 (P) 5 Tower 2 Development at TW5 Bayside N48 Residential 42 30.6 (P) 5 Tower 3 Development at TW5 Bayside N49 Residential 39 30.6 (P) 5 Tower 4 Development at TW5 Bayside N50 Residential 39 30.6 (P) 4 Tower 5 Development at TW5 Bayside N51 Residential 42 30.6 (P) 3 Tower 6 Development at TW5 Bayside N52 Residential 42 30.6 (P) 3 Tower 7 Development at TW5 Bayside N53 Residential 42 30.6 (P) 3 Tower 8 Development at TW5 Bayside N54 Residential 42 30.6 (P) 3 Tower 9 N55 Vision City Tower 1 Residential 41 38.4 (P) 1 N56 Vision City Tower 2 Residential 43 38.4 (P) 1 N57 No. 57 Yeung Uk Road Residential 5 4 (S) 1

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No. of Noise Sensitive No. of Noise Storeys above Podium Assessment NSR Podium/Site (P)/Site Level Points at ID Description Land Use Level (S) (mPD) Each Floor N58 No. 59-77 Yeung Uk Road Residential 5 4 (S) 1 N59 Tsuen Wan Caritas Clinic Clinic 4 4 (S) 1 N60 No. 85-99 Yeung Uk Road Residential 4 4 (S) 1 N61 Harmony Garden Block 1 Residential 24 10.4 (P) 1 N62 Harmony Garden Block 2 Residential 24 10.4 (P) 1 N63 Development at TWTL 394 Tower 1 Residential 45 30.6 (P) 3 N64 Development at TWTL 394 Tower 2 Residential 45 30.6 (P) 3 N65 Development at TW6 Tower 1 Residential 48 23.5 (P) 2 N66 Development at TW6 Tower 2 Residential 46 23.5 (P) 2 N67 Development at TW7 Tower 1 Residential 44 20.5 (P) 5 N68 Development at TW7 Tower 2 Residential 44 20.5 (P) 4 N69 Development at TW7 Tower 3 Residential 44 20.5 (P) 5 N70 Development at TW7 Tower 4 Residential 42 20.5 (P) 5 N71 Development at TW7 Tower 5 Residential 42 20.5 (P) 5 N72 Development at TW7 Tower 6 Residential 40 20.5 (P) 3 N73 Development at TW7 Tower 7 Residential 40 20.5 (P) 3 N74 Waterside Plaza Block 1 Residential 37 18.2 (P) 7 N75 Waterside Plaza Block 2 Residential 37 18.2 (P) 5 N76 Waterside Plaza Block 3 Residential 32 18.2 (P) 5 N77 Waterside Plaza Block 4 Residential 31 18.2 (P) 5 N78 Proposed School Site at TW7 School 6 17.5 (S) 3 Shak Chung Shan Memorial Catholic N79 School 7 4.5 (S) 2 Primary School N80 Riviera Gardens Tower 1 Residential 31 10.4 (P) 6 N81 Riviera Gardens Tower 2 Residential 32 10.4 (P) 4 N82 Riviera Gardens Tower 3 Residential 36 10.4 (P) 2 N83 Riviera Gardens Tower 4 Residential 36 10.4 (P) 2 N84 Riviera Gardens Tower 17 Residential 34 16.7 (P) 1 N85 Riviera Gardens Tower 18 Residential 34 16.7 (P) 2 N86 Riviera Gardens Tower 19 Residential 30 16.7 (P) 2 N87 Riviera Gardens Tower 20 Residential 30 24.6 (P) 2 N88 Riviera Gardens Tower 21 Residential 30 22.3 (P) 4 N89 Riviera Gardens Tower 22 Residential 30 22.3 (P) 6 N90 S K H Chu Tan Primary School School 6 61 (S) 1 N91 Kwai Shing West Estate Block 6 Residential 17 51 (S) 6 N92 Kwai Shing West Estate Block 8 Residential 24 61 (S) 6 N93 Kwai Shing West Estate Block 9 Residential 21 27.5 (S) 4

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No. of Noise Sensitive No. of Noise Storeys above Podium Assessment NSR Podium/Site (P)/Site Level Points at ID Description Land Use Level (S) (mPD) Each Floor N94 Kwai Shing West Estate Block 10 Residential 14 27.5 (S) 3 N95 Lee I Yao Secondary School School 5 26.5 (S) 1 N96 Hibiscus Park Block 1 Residential 35 11 (P) 2 N97 Hibiscus Park Block 2 Residential 35 11 (P) 2

3.2.3 Assessment Methodology Assessment Year 3.2.3.1. Traffic noise level at Year 2010 is considered as the prevailing traffic noise level, which will be applied for the assessment of the eligibility of the identified NSRs for indirect technical remedies if necessary. 3.2.3.2. According to Section 5.1, Annex 13 of the EIAO-TM and EIAO Guidance Note No. 12/2005, traffic noise impact assessment shall be conducted based on the design traffic conditions or the maximum traffic projection within 15 years upon operation of the road works (i.e. Year 2015 to Year 2030 for this Project). According to the Final Traffic Impact Assessment (TIA) Review Report issued in January 2007 by Scott Wilson in association with MVA Hong Kong Ltd., the maximum traffic flow is predicted to be in the last assessment year (i.e. Year 2030) under the “with Project” scenario. 3.2.3.3. Therefore, operational noise impact assessment for the unmitigated and mitigated scenarios for the compliance of the noise criteria stipulated in the EIAO-TM is based on the predicted traffic flow at Year 2030 under the “with Project” scenario. Traffic Data 3.2.3.4. Traffic data for major road sections within the Noise Assessment Area of the Project at the assessment years are adopted from the endorsed Final TIA Review Report. Correspondence of the endorsement is provided in Appendix 3-G. Descriptions and road traffic flow compositions of the major roads related to the Project at Year 2030 are summarized in Table 3-6. Key plans from the Final TIA Review Report for the major road sections, as well as information showing all road segments and their traffic data are shown in Appendix 3-H. Friction course surface (pervious) is applied at any roads (DP or non-DP roads in the Project) with vehicle speed limit at least 70 kph as a high speed road standard.

Table 3-6 Summary of Traffic Data of Major Road Sections in the Project

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Road Predicted Segment Speed Peak Hour Designation Road Segment Road % Heavy Category Carriageway Limit Flow at in TIA Descriptions Surface Vehicles (kph) Year 2030 Review (vph) Report Tuen Mun Road (Kowloon Bound) - Hoi Hing Road Existing A Single way 70 Pervious 900 49 Roundabout to Castle Peak Road Road (Tsuen Wan) Tsuen Wan Road Viaduct (Kowloon Bound) - Tuen B New Road Single way 70 Pervious 1050 58 Mun Road to Tai Chung Road Roundabout Tsuen Wan Road (Kowloon Bound) - Tuen Existing C Single way 70 Pervious 2700 33 Mun Road to Tai Chung Road Road Roundabout Tuen Mun Road (Kowloon Existing D Bound) - up to Tsuen Wan Single way 70 Pervious 4650 43 Road Road Tuen Mun Road (Tuen Existing E Mun Bound) - from Tsuen Single way 70 Pervious 3000 56 Road Wan Road Slip Road from Hoi Hing F Road interchange to Tai New Road Single way 50 Impervious 1850 34 Chung Road Roundabout Slip Road from Tsuen Existing G Wan Road to Tai Chung Single way 50 Impervious 450 51 Road Road Roundabout Elevated Road (Tuen Mun Bound) from Castle Peak Existing H Single way 70 Pervious 600 59 Road - Tsuen Wan to Tuen Road Mun Road Tsuen Wan Road Viaduct (Kowloon Bound) - Tai I New Road Single way 70 Pervious 2900 43 Chung Road Roundabout to Wing Shun Street Tsuen Wan Road Existing J (Kowloon Bound) - Tai Single way 70 Pervious 2250 29 Road Chung Road Roundabout Slip Road from Tai Chung Road Roundabout to Partially K Single way 50 Impervious 1200 46 Tsuen Wan Road Expanded (Kowloon Bound) Tsuen Wand Road Viaduct (Kowloon Bound) - Wing L New Road Single way 70 Pervious 2300 39 Shun Street to Wing Kei Road

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Road Predicted Segment Speed Peak Hour Designation Road Segment Road % Heavy Category Carriageway Limit Flow at in TIA Descriptions Surface Vehicles (kph) Year 2030 Review (vph) Report Tsuen Wan Road (Kowloon Bound) - Tai Existing M Chung Road Roundabout Single way 70 Pervious 3450 35 Road to Tsuen Tsing Interchange Slip Road from Tsuen Wan Road Viaduct to N New Road Single way 50 Impervious 600 34 Tsuen Tsing Interchange (Kowloon Bound) Slip Road from Tsuen Wan Road to Tsuen Tsing Existing O Single way 50 Impervious 1000 27 Interchange (Kowloon Road Bound)

Tsuen Wand Road Existing P (Kowloon Bound) - Tsuen Single way 70 Pervious 2450 32 Road Tsing Interchange

Slip Road from Tsuen Tsing Interchange to Q New Road Single way 50 Impervious 1900 41 Tsuen Wan Road (Kowloon Bound)

Tsuen Wan Road (Kowloon Bound) - Tsuen R New Road Single way 70 Pervious 6650 38 Tsing Interchange to Kwai Tsing Interchange

Slip Road from Tsuen Wan Road to Kwai Tsing Partially S Single way 70 Pervious 1600 54 Interchange (Kowloon Expanded Bound)

Tsuen Wan Road Viaduct Existing T (Kowloon Bound) - Kwai Single way 70 Pervious 5050 35 Road Tsing Interchange

Slip Road from Kwai Tsing Interchange to Existing U Single way 50 Impervious 1000 47 Tsuen Wan Road Road (Kowloon Bound) Tsuen Wan Road (Tuen Existing V Mun Bound) - Kwai Tsing Single way 70 Pervious 4750 43 Road Interchange Slip Road from Tsuen Wan Road to Kwai Tsing Existing W Single way 50 Impervious 950 45 Interchange (Tuen Mun Road Bound)

Final EIA Report 3-13 03.Noise Impact (20080922)

Road Predicted Segment Speed Peak Hour Designation Road Segment Road % Heavy Category Carriageway Limit Flow at in TIA Descriptions Surface Vehicles (kph) Year 2030 Review (vph) Report Slip Road from Kwai Tsing Interchange to X New Road Single way 70 Pervious 800 44 Tsuen Wan Road Viaduct (Tuen Mun Bound) Tsuen Wan Road (Tuen Mun Bound) - Kwai Tsing Y New Road Single way 70 Pervious 5550 42 Interchange to Tsuen Tsing Interchange Slip Road from Tsuen Wan Road to Tsuen Tsing Z New Road Single way 50 Impervious 950 31 Interchange (Tuen Mun Bound)

Tsuen Wand Road (Tuen Existing AA Mun Bound) - Tsuen Tsing Single way 70 Pervious 2550 40 Road Interchange

Tsuen Wan Road Viaduct (Kowloon Bound) - Tsuen AB New Road Single way 70 Pervious 2050 46 Tsing Interchange to Tai Chung Road Roundabout

Elevated Road from Tsuen Existing AC Wan Road to Tsing Tsuen Single way 50 Impervious 1700 39 Road Road Slip Road from Tsuen Tsing Interchange to Existing AD Single way 50 Impervious 800 28 Tsuen Wan Road (Tuen Road Mun Bound)

Tsuen Wan Road (Tuen Mun Bound) - Tsuen Tsing Existing AE Single way 70 Pervious 1650 38 Interchange to Tai Chung Road Road Roundabout

Slip Road from Tsuen Wan Road to Tai Chung Partially AF Single way 50 Impervious 1100 32 Road Roundabout (Tuen Expanded Mun Bound)

Tsuen Wan Road (Tuen Existing AG Mun Bound) - Tai Chung Single way 70 Pervious 550 51 Road Road Roundabout

Tsuen Wan Road (Tuen Mun Bound) - Tai Chung Existing AH Single way 70 Pervious 1150 49 Road Roundabout to Tuen Road Mun Road

Final EIA Report 3-14 03.Noise Impact (20080922)

Road Predicted Segment Speed Peak Hour Designation Road Segment Road % Heavy Category Carriageway Limit Flow at in TIA Descriptions Surface Vehicles (kph) Year 2030 Review (vph) Report Slip Road from Tai Chung Road Roundabout to Existing AI Single way 50 Impervious 600 47 Tsuen Wan Road (Tuen Road Mun Bound) Slip Road from Tsuen AK Wan Road Viaduct to Hoi New Road Single way 50 Impervious 800 29 Hing Road Tsuen Wan Road Viaduct (Tuen Mun Bound) - Tai AL New Road Single way 70 Pervious 1250 62 Chung Road Roundabout to Tuen Mun Road

Existing and Planned Noise Mitigation Measures on Adjacent Road Sections within the Noise Assessment Area 3.2.3.5. For the purpose of operational noise impact assessment, all existing and planned noise mitigation measures which will be completed within 15 years starting from the operation year (i.e. Year 2015) on the adjacent roads within the Noise Assessment Area have been taken into account. 3.2.3.6. Identified existing noise mitigation measures include those on Route 9 fronting Summit Terrace and Tsuen King Circuit. Their locations and site photos are shown in Appendix 3-I. 3.2.3.7. Identified planned noise mitigation measures include those in proposed road projects on Tuen Mun Road and Yeung Uk Road Widening. The locations of these planned noise mitigation measures are shown in Appendix 3-J. 3.2.3.8. Sources of information of all identified planned noise mitigation measures on the adjacent roads are shown in Appendix 3-K. Traffic Noise Impact Prediction with Computer Model 3.2.3.9. Prediction of road traffic noise impact and necessary noise mitigation design was conducted with computer model “RoadNoise® 2000”, which adopts the methodology described in “Calculation of Road Traffic Noise (CRTN)” (1988) developed by the UK Department of Transport. CRTN takes into account all major parameters related to effective traffic noise prediction, including traffic flow and composition, road segment length and gradient, road surface, propagation characteristics, barrier and façade effects, as well as site layout settings etc. 3.2.3.10. The operational noise impact assessment was conducted based on the predicted future peak hour maximum traffic flows under the following scenarios: • “With Project”, unmitigated scenario at the assessment year (i.e. Year 2030); • “With Project”, mitigated scenario at the assessment year (i.e. Year 2030); and

Final EIA Report 3-15 03.Noise Impact (20080922)

• Prevailing scenario, i.e. “without Project” scenario at Year 2010 for indirect technical remedies eligibility assessment (if necessary) 3.2.3.11. Road traffic noise is presented in terms of noise levels exceeded for 10% of the one- hour period for the hour having the peak traffic flow (i.e. L10,1hour, dB(A)). 3.2.3.12. Typical “RoadNoise® 2000” computer plot is shown in Appendix 3-L. 3.2.4 Prediction and Evaluation of Noise Impacts 3.2.4.1. Operational noise impact assessment under the unmitigated scenario has been conducted at the identified NSRs and the results are summarized in 3.2.4.2. Table 3-7 Detailed results at each level of each noise assessment point of the identified NSRs are presented in Appendix 3-N.

Table 3-7 Predicted Road Traffic Noise Levels at Each Identified NSR under the Unmitigated Scenario NSR ID Descriptions Range of Predicted Noise Level (Unmitigated) Noise EIAO [2] (L10,1 hour , dB(A)) Standard Criteria Under Complied? Difference EIAO-TM [1] Overall non-DP DP roads (Overall - noise level roads only only non DP Roads) N1 Tsuen Tak Gardens Block A 58~66 70 Yes - - - - N2 Tsuen Tak Gardens Block B 61~66 70 Yes - - - - N3 Tsuen Tak Gardens Block C 64~70 70 Yes - - - - N4 Tsuen Tak Gardens Block D - 70 Yes 71~73 71~73 50~58 0~0.2 N5 Tsuen Tak Gardens Block E 70 70 Yes 71~72 71~72 53~59 0~0.3 N6 Joyful Building Block A 52~67 70 Yes - - - - N7 Joyful Building Block B 51~64 70 Yes - - - - N8 Sheeny Terrace 63~68 70 Yes - - - - N9 Summit Terrace Tower 1 - 70 Yes 71~72 71~72 51~60 0~0.4 N10 Summit Terrace Tower 2 61~69 70 Yes 71~77 71~77 60~66 0.1~0.9 N11 Summit Terrace Tower 3 59~70 70 No 71~75 69~74 63~67 0.6~1.3 N12 Summit Terrace Tower 5 60~70 70 No 71~75 69~74 63~68 0.9~1.8

Final EIA Report 3-16 03.Noise Impact (20080922)

NSR ID Descriptions Range of Predicted Noise Level (Unmitigated) Noise EIAO [2] (L10,1 hour , dB(A)) Standard Criteria Under Complied? Difference EIAO-TM [1] Overall non-DP DP roads (Overall - noise level roads only only non DP Roads) N13 Tsuen Wan Adventist - 55 Yes Hospital 69~70 69~70 47~50 0~0.1 N14 Tsuen Wan Adventist 69 70 Yes Hospital Staff Quarter - - - - N15 Allway Gardens Block A 63~68 70 Yes - - - - N16 Allway Gardens Block B 61~67 70 Yes - - - - N17 Allway Gardens Block C 61~66 70 Yes - - - - N18 Wang Fat Ching She 53~60 65 Yes - - - - N19 The Panorama 61~70 70 No 71~76 71~76 5~67 0~1.3 N20 Phase I Belvedere Garden 57~70 70 Yes Block 1 71~77 70~77 39~61 0~0.5 N21 Phase I Belvedere Garden 49~70 70 Yes Block 2 71~77 70~77 46~55 0~0.2 N22 Phase I Belvedere Garden 56~70 70 Yes Block 3 71~77 70~77 33~52 0~0.1 N23 Serenade Cove Block A 62~69 70 Yes 73~80 73~80 55~63 0~0.4 N24 Serenade Cove Block B 59~70 70 Yes 71~80 70~80 57~64 0~0.7 N25 Serenade Cove Block C 63~70 70 Yes 71~78 70~78 48~61 0~0.5 N26 Phase III Belvedere Garden 70 70 Yes Block 7 71~79 70~79 54~62 0~0.6 N27 Phase III Belvedere Garden - 70 Yes Block 6 74~79 74~79 53~55 0~0.1 N28 Phase III Belvedere Garden - 70 Yes Block 5 73~79 73~79 52~54 0~0.1 N29 Fu Yung House - 70 Yes 74~78 74~78 56~60 0~0.2 N30 Yan Wai Garden 59~69 70 Yes 71~75 70~75 60~65 0.2~0.8 N31 Tak Yan Building Stage 15 64~67 70 Yes - - - - N32 On Hong Building 53~70 70 Yes - - - - N33 Kan Fat Building 66 70 Yes - - - -

Final EIA Report 3-17 03.Noise Impact (20080922)

NSR ID Descriptions Range of Predicted Noise Level (Unmitigated) Noise EIAO [2] (L10,1 hour , dB(A)) Standard Criteria Under Complied? Difference EIAO-TM [1] Overall non-DP DP roads (Overall - noise level roads only only non DP Roads) N34 Heung Wo Building 50~68 70 Yes - - - - N35 On Fung Building 54~68 70 Yes - - - - N36 Wong Siu Ching Secondary - 65 Yes School 73~76 73~76 57~64 0.1~0.4 N37 Tsuen Wan Plaza Block 1 62~70 70 No 71~73 70~72 61~68 0.5~1.6 N38 Tsuen Wan Plaza Block 2 60~70 70 No 71 70 64 0.9~1.1 N39 Salvation Army Ng Kwok - 65 No Wai Memorial Kindergarten 70~78 68~76 66~73 1.5~1.9 N40 Clague Garden Estate Block A 52~70 70 No 71~81 68~79 63~77 0.2~2.9 N41 Clague Garden Estate Block B 56~70 70 No 71~78 68~75 65~75 1.0~3.0 N42 Clague Garden Estate Block C 68~70 70 No 71~81 69~78 57~78 0~3.2 N43 Skyline Plaza 61~70 70 No 71~76 69~76 50~67 0~1.9 N44 Development at TW5 Cityside 55~70 70 No Tower 10 71~75 67~72 67~72 2.2~3.2 N45 Development at TW5 Cityside 52~70 70 No Tower 11 71 67~68 67~68 2.8~3.3 N46 Development at TW5 Bayside 51~70 70 No Tower 1 71~72 68~70 68~69 2.2~3.0 N47 Development at TW5 Bayside 51~70 70 No Tower 2 71 68~69 67 2.1~2.6 N48 Development at TW5 Bayside 51~70 70 No Tower 3 71 68~69 67~68 2.3~2.9 N49 Development at TW5 Bayside 45~70 70 No Tower 4 71~72 68~69 68 2.5~3.0 N50 Development at TW5 Bayside 50~61 70 No Tower 5 72~75 70~72 67~71 1.9~2.4 N51 Development at TW5 Bayside 69~70 70 No Tower 6 71~74 68~72 66~71 1.8~2.6 N52 Development at TW5 Bayside 66~70 70 Yes Tower 7 - - - - N53 Development at TW5 Bayside 65~70 70 No Tower 8 71 69 65~66 1.7~2.0 N54 Development at TW5 Bayside 68~70 70 No Tower 9 71~72 68~70 65~68 1.4~2.5

Final EIA Report 3-18 03.Noise Impact (20080922)

NSR ID Descriptions Range of Predicted Noise Level (Unmitigated) Noise EIAO [2] (L10,1 hour , dB(A)) Standard Criteria Under Complied? Difference EIAO-TM [1] Overall non-DP DP roads (Overall - noise level roads only only non DP Roads) N55 Vision City Tower 1 68 70 Yes 71~74 71~74 54~62 0~0.4 N56 Vision City Tower 2 63~70 70 Yes 71~73 71~72 55~58 0.1~0.3 N57 No. 57 Yeung Uk Road - 70 Yes 78 78 36~39 0 N58 No. 59-77 Yeung Uk Road - 70 Yes 78 78 22 0 N59 Tsuen Wan Caritas Clinic - 55 Yes 79~80 79~80 22~23 0 N60 No. 85-99 Yeung Uk Road - 70 Yes 80~81 80~81 23 0 N61 Harmony Garden Block 1 - 70 Yes 74~79 74~79 22 0 N62 Harmony Garden Block 2 68~70 70 Yes 71 71 18 0 N63 Tsuen Wan Town Lot 394 70 70 No Tower 1 71~73 68~71 66~69 1.5~2.7 N64 Tsuen Wan Town Lot 394 70 70 No Tower 2 71~74 68~72 67~70 1.7~2.6 N65 Development at TW6 Tower 1 59~70 70 No 71~78 68~75 67~74 1.9~2.9 N66 Development at TW6 Tower 2 60~70 70 No 71~78 68~75 64~74 0.7~3.1 N67 Development at TW7 Tower 1 52~70 70 No 71~72 68~71 64~68 1.0~2.6 N68 Development at TW7 Tower 2 47~70 70 No 71 68 67 2.5~2.6 N69 Development at TW7 Tower 3 62~70 70 No 71~74 68~71 67~70 2.2~2.9 N70 Development at TW7 Tower 4 64~70 70 No 71~74 68~71 67~71 2.3~2.9 N71 Development at TW7 Tower 5 60~70 70 No 71 68 67~68 2.8~2.9 N72 Development at TW7 Tower 6 69~70 70 No 71~78 68~74 67~76 2.2~4.1 N73 Development at TW7 Tower 7 - 70 Yes 73~78 73~77 58~69 0.1~0.7 N74 Waterside Plaza Block 1 55~70 70 No 71~74 69~74 63~67 0.4~1.9 N75 Waterside Plaza Block 2 49~68 70 Yes - - - -

Final EIA Report 3-19 03.Noise Impact (20080922)

NSR ID Descriptions Range of Predicted Noise Level (Unmitigated) Noise EIAO [2] (L10,1 hour , dB(A)) Standard Criteria Under Complied? Difference EIAO-TM [1] Overall non-DP DP roads (Overall - noise level roads only only non DP Roads) N76 Waterside Plaza Block 3 58~70 70 Yes - - - - N77 Waterside Plaza Block 4 53~70 70 Yes 71~72 70~72 62~64 0.5~0.8 N78 Proposed School Site at TW7 61~65 65 Yes 66~76 65~76 59~65 0.2~0.9 N79 Shak Chung Shan Memorial - 65 Yes Catholic Primary School 72~73 71~73 48~56 0~0.1 N80 Riviera Gardens Tower 1 43~70 70 Yes 71~75 70~75 40~62 0~0.5 N81 Riviera Gardens Tower 2 52~70 70 Yes - - - - N82 Riviera Gardens Tower 3 59~66 70 Yes - - - - N83 Riviera Gardens Tower 4 46~65 70 Yes - - - - N84 Riviera Gardens Tower 17 45~65 70 Yes - - - - N85 Riviera Gardens Tower 18 51~70 70 Yes 71 71 31 0 N86 Riviera Gardens Tower 19 65~70 70 Yes 73~76 73~76 26~31 0 N87 Riviera Gardens Tower 20 - 70 Yes 75~79 75~79 47~61 0~0.2 N88 Riviera Gardens Tower 21 - 70 Yes 73~77 73~77 30~65 0~0.5 N89 Riviera Gardens Tower 22 65~70 70 Yes 71~76 71~76 42~66 0~0.7 N90 S K H Chu Yan Primary - 65 Yes School 71~74 71~74 50 0~0.1 N91 Kwai Shing West Est Block 6 35~70 70 Yes 73~78 73~78 47~55 0~0.1 N92 Kwai Shing West Est Block 8 42~70 70 Yes 71~72 71~72 25~36 0 N93 Kwai Shing West Est Block 9 36~70 70 Yes 71~75 71~75 27~32 0 N94 Kwai Shing West Est Block 56~67 70 Yes 10 - - - - N95 Lee I Yao Secondary School - 65 Yes 81~82 81~82 0 0 N96 Hibiscus Park Block 1 38~55 70 Yes - - - -

Final EIA Report 3-20 03.Noise Impact (20080922)

NSR ID Descriptions Range of Predicted Noise Level (Unmitigated) Noise EIAO [2] (L10,1 hour , dB(A)) Standard Criteria Under Complied? Difference EIAO-TM [1] Overall non-DP DP roads (Overall - noise level roads only only non DP Roads) N97 Hibiscus Park Block 2 45~59 70 Yes - - - - Notes: 1. EIAO noise criteria are complied if (a) overall noise level ≤ noise standards under EIAO-TM, or (b) noise level from DP roads only ≤ noise standards under EIAO-TM and difference between overall noise level and noise levels of non-DP roads < 1.0 dB(A). 2. Each representative NSR is divided into two groups according to the overall noise level, namely (a) that with overall noise level ≤ noise standards under EIAO-TM (upper row) and (b) that with overall noise level > noise standards under EIAO-TM (lower row). For group (a), three kinds of predicted noise levels, i.e. noise level from non-DP roads only, noise levels from DP roads only, and difference between overall noise levels and noise levels from non-DP roads only, are not considered (shaded). “-“ indicates that there is no assessment point represented for that NSR belongs to that overall noise level group.

3.2.4.3. Table 3-7 shows that under the unmitigated scenario the predicted road traffic noise levels at some identified NSRs (i.e. N11, N12, N19, N37 to N51, N53, N54, N63 to N72, and N74) do not comply with the EIAO noise criteria. Therefore, direct noise mitigation measures are considered necessary to reduce the road traffic noise impact. 3.2.5 Proposed Noise Mitigation Measures Available Mitigation Options 3.2.5.1. As stated in Section 6, Annex 13 of the EIAO-TM, there is a range of possible measures available to mitigate road traffic noise. These include: For planned developments: • alternative land use arrangement; • alternative sitting; • screening by noise tolerant buildings; • setback of buildings; • decking over; • extended podium; • building orientation; • special building design; and • architectural features/balcony; For existing developments: • treatment of source; • alternative alignment;

Final EIA Report 3-21 03.Noise Impact (20080922)

• noise barrier/enclosure; and • open-textured road surfacing 3.2.5.2. In view of the practicality, roadside noise barriers are considered to be an effective and practicable mitigation option for the traffic noise impacts. In order to consider the worst-case scenario, reflective type barriers are adopted in this operational noise impact assessment. Direct Noise Mitigation Measures 3.2.5.3. In general, concrete parapet walls of 0.8m high are adopted in this operational noise impact assessment along all elevated sections of the existing and planned roads, with the exception of the elevated roads joining Castle Peak Road – Tsuen Wan Section and Tuen Mun Road where noise barriers are currently in place. 3.2.5.4. Direct noise mitigation measures such as cantilevered noise barriers, as well as semi- enclosures or full noise enclosures have been considered for the road traffic noise impact. Major steps in the design of noise mitigation measures for the compliance of noise standards stipulated in the EIAO-TM and the requirements of EIAO Guidance Note No. 12/2005 regarding traffic noise impact assessment are as follows: 1) The predicted peak hour traffic flows at Year 2030 (highest traffic volume within 15 operational years starting from Year 2015) under the “with Project” scenario are considered to evaluate traffic noise levels at all noise assessment points. 2) “Baseline” study, which takes into account all existing representative site layouts, building developments, roads and the noise mitigation measures within the Noise Assessment Area at Year 2030, is conducted. Noise mitigation measures for the DP roads of the Project are not included in this “baseline” study (unmitigated scenario). 3) Necessary direct noise mitigation measures along the DP roads of the Project are considered based on the results from the “baseline” study. 4) The necessity for the application of direct noise mitigation measures (noise barriers/ enclosures) is determined based on the following conditions:- 5) If the predicted overall noise levels at the noise assessment points do not exceed the specified noise standards in the EIAO-TM (Table 3-1), no direct noise mitigation measures along the DP roads of the Project are required; 6) If the predicted overall noise levels at the noise assessment points exceed the specified noise standards stipulated in the EIAO-TM ((Table 3-1), direct noise mitigation measures shall be considered, such that either requirement (a) or (b)+(c) below could be fulfilled: a) The mitigated overall noise level is not higher than the specified noise level standards in the EIAO-TM ((Table 3-1); b) The mitigated noise level arising from DP roads only is not higher than the specified noise level standards in the EIAO-TM ((Table 3-1); c) The contribution of the mitigated noise level arising from the DP roads to the mitigated overall noise level is less than 1.0 dB(A).

Final EIA Report 3-22 03.Noise Impact (20080922)

3.2.5.5. Total number of dwellings, classrooms and other noise sensitive elements that will be benefited from and be protected by provision of direct noise mitigation measures is also determined as follows: 1) Dwellings, classrooms and other noise sensitive elements that will benefit from provision of direct noise mitigation measures are those: a) exposed to overall traffic noise levels exceeding the specified noise level standards in the EIAO-TM ((Table 3-1); and b) benefited at least 1.0 dB(A) from the implementation of the direct noise mitigation measures. 2) Dwellings, classrooms and other noise sensitive elements that will be protected by provision of direct noise mitigation measures are those: a) exposed to overall traffic noise levels exceeding the specified noise level standards in the EIAO-TM ((Table 3-1); and b) exposed to overall traffic noise levels compiling with the specified noise level standards in the EIAO-TM ((Table 3-1) with the implementation of the direct noise mitigation measures. Indirect Noise Mitigation Measures 3.2.5.6. In cases where practicable direct noise mitigation measures alone are not adequate in mitigating noise level for the compliance of noise standards stipulated in the EIAO- TM, indirect technical remedies for existing NSRs may be adopted provided that the residual impacts satisfy all of the following three criteria: 1) The predicted overall noise level exceeds the noise standards stipulated in the EIAO-TM ((Table 3-1); 2) The predicted overall noise level is at least 1.0 dB(A) more than the prevailing traffic noise level, i.e. the total traffic noise level existing before the works to construct the road were commenced (“without Project” scenario at Year 2010); and 3) The contribution from the DP roads to the increase in the predicted overall noise level is at least 1.0 dB(A). 3.2.6 Assessment of Noise Impacts with the Application of Mitigation Measures 3.2.6.1. Referring to the road traffic noise prediction results under the unmitigated scenario presented in Section 3.2.4, direct noise mitigation measures (noise barriers and enclosures) were designed along the DP roads of the Project for the compliance with the EIAO-TM noise criteria. Table 3-8 summarizes the proposed direct noise mitigation measures along the DP roads of the Project. Their locations and cross- sections are illustrated graphically in Figure 3-5.

Final EIA Report 3-23 03.Noise Impact (20080922)

Table 3-8 Summary of Proposed Noise Mitigation Measures at Operational Phase for the Compliance of EIAO Noise Criteria

Item Proposed Noise Mitigation Road Name Direction Major NSRs Protected Measures ID Description Length (m) 1 C1 5.5m with 3.5m 200 Tsuen Wan Road Kowloon Bound Summit Terrace Block 3 and Block cantilevered 5 (N11, N12) barrier 2 C2 5.5m with 3.5m 371 Tsuen Wan Road Kowloon Bound Development at TWTL 394 Tower cantilevered 1 and Tower 2 (N63, N64) barrier 3 C3 5.5m with 3.5m 560 Tsuen Wan Road Kowloon Bound Development at TW6 Tower 1 and cantilevered Tower 2 (N65, N66), Development barrier at TW7 Tower 1 to Tower 6 (N67- N72) 4 C4 5.5m with 3.5m 104 Tsuen Wan Road Tuen Mun Bound The Panorama (N19) cantilevered barrier 5 C5 5.5m with 3.5m 635 Tsuen Wan Road Tuen Mun Bound Development at TW5 Cityside cantilevered Tower 10 and Tower 11 (N44, barrier N45), Development at TWTL 394 Tower 1 and Tower 2 (N63, N64) 6 C6 5.5m with 3.5m 334 Tsuen Wan Road Tuen Mun Bound Development at TW5 Tower 1 cantilevered (N46), Development at TW6 barrier Tower 1 and Tower 2 (N65, N66), Development at TW7 Tower 1 (N67), Waterside Plaza Block 1 (N74) 7 S1 Semi-enclosure 50 Tsuen Wan Road Kowloon Bound Development at TW5 Bayside Tower 5 and Tower 6 (N50, N51) 8 S2 Semi-enclosure 229 Tsuen Wan Road Kowloon Bound Tsuen Wan Plaza Tower 1 and Tower 2 (N37, N38), Clague Garden Estate Block A to Block C (N40-N42), Development at TW5 Cityside Tower 10 and Tower 11 (N44, N45) 9 S3 Semi-enclosure 84 Tsuen Wan Road Tuen Mun Bound Development at TW5 Bayside Tower 5 and Tower 6 (N50, N51) 10 S4 Semi-enclosure 105 Tsuen Wan Road Tuen Mun Bound Development at TW7 Tower 3 to Tower 6 (N69 - N72) 11 F1 Full enclosure 110 Tsuen Wan Road Kowloon Bound Tsuen Wan Plaza Tower 1 and Tower 2 (N37, N38), Clague Garden Estate Block A to Block C (N40-N42), Development at TW5 Bayside Tower 2 to Tower 6 (N47- N51)

Final EIA Report 3-24 03.Noise Impact (20080922)

Item Proposed Noise Mitigation Road Name Direction Major NSRs Protected Measures ID Description Length (m) 12 F2 Full enclosure 93 Tsuen Wan Road Tuen Mun Bound Tsuen Wan Plaza Tower 1 and Tower 2 (N37, N38), Clague Garden Estate Block A to Block C (N40-N42), Development at TW5 Bayside Tower 2 to Tower 6 (N47- N51) 13 F3 Full enclosure 58 Tsuen Wan Road Tuen Mun Bound Clague Garden Estate Block A to Block C (N40-N42), Tsuen Wan Plaza Tower 1 and Tower 2 (N37, N38), Development at TW5 Bayside Tower 8 (N53)

3.2.6.2. Table 3-9 summarizes the predicted road traffic noise level at each identified NSR with the proposed direct noise mitigation measures described in Table 3-8 adopted. Table 3-10 provides the total number of dwellings, classrooms and other noise sensitive elements that will be benefited from and be protected by provision of the direct noise mitigation measures. Detailed results at each floor of each noise assessment point are presented in Appendix 3-O. “RoadNoise® 2000” data files under the mitigated scenario are provided in the enclosed CD-ROM.

Table 3-9 Predicted Road Traffic Noise Level at Each Identified NSR under the Mitigated Scenario NSR ID Descriptions Range of Predicted Noise Level (Mitigated) Noise EIAO [2] (L10,1hour, dB(A)) Standard Criteria Difference Under EIAO- Complied? Overall non-DP DP roads (Overall - TM [1] noise level roads only only non DP Roads N1 Tsuen Tak Gardens Block A 58~66 70 Yes - - - - N2 Tsuen Tak Gardens Block B 61~66 70 Yes - - - - N3 Tsuen Tak Gardens Block C 64~70 70 Yes - - - - N4 Tsuen Tak Gardens Block D - 70 Yes 71~73 71~73 43~54 0~0.1 N5 Tsuen Tak Gardens Block E 70 70 Yes 71~72 71~72 45~55 0~0.1 N6 Joyful Building Block A 52~67 70 Yes - - - - N7 Joyful Building Block B 51~63 70 Yes - - - - N8 Sheeny Terrace 63~67 70 Yes - - - - N9 Summit Terrace Tower 1 - 70 Yes

Final EIA Report 3-25 03.Noise Impact (20080922)

N10 Summit Terrace Tower 2 60~70 70 Yes 72~77 71~77 53~64 0~0.6 N11 Summit Terrace Tower 3 58~70 70 Yes 71~74 70~74 60~65 0.3~0.8 N12 Summit Terrace Tower 5 60~70 70 Yes 71~74 70~74 62~66 0.6~0.9 N13 Tsuen Wan Adventist - 55 Yes Hospital 69~70 69~70 45~47 0~0.1 N14 Tsuen Wan Adventist 68~69 70 Yes Hospital Staff Quarter - - - - N15 Allway Gardens Block A 63~68 70 Yes - - - - N16 Allway Gardens Block B 60~67 70 Yes - - - - N17 Allway Gardens Block C 61~66 70 Yes - - - - N18 Wang Fat Ching She 53~59 65 Yes - - - - N19 The Panorama 53~70 70 Yes 71~76 71~76 7~65 0~0.9 N20 Phase I Belvedere Garden 51~70 70 Yes Block 1 71~77 70~77 38~60 0~0.4 N21 Phase I Belvedere Garden 49~70 70 Yes Block 2 71~77 70~77 37~53 0~0.1 N22 Phase I Belvedere Garden 52~70 70 Yes Block 3 71~77 71~77 33~41 0~0.1 N23 Serenade Cove Block A 62~69 70 Yes 73~80 73~80 53~63 0~0.4 N24 Serenade Cove Block B 59~70 70 Yes 71~80 70~80 57~64 0~0.7 N25 Serenade Cove Block C 63~70 70 Yes 71~78 70~78 37~57 0~0.2 N26 Phase III Belvedere Garden 70 70 Yes Block 7 71~79 70~79 54~61 0~0.5 N27 Phase III Belvedere Garden - 70 Yes Block 6 74~79 74~79 53~55 0~0.1 N28 Phase III Belvedere Garden - 70 Yes Block 5 73~79 73~79 52~54 0~0.1 N29 Fu Yung House - 70 Yes 74~78 74~78 52~56 0~0.1 N30 Yan Wai Garden 59~70 70 Yes 71~75 71~75 56~61 0~0.4 N31 Tak Yan Building Stage 15 64~67 70 Yes - - - -

Final EIA Report 3-26 03.Noise Impact (20080922)

N34 Heung Wo Building 50~67 70 Yes - - - - N35 On Fung Building 54~68 70 Yes - - - - N36 Wong Siu Ching Secondary - 70 Yes School 73~76 73~76 55~60 0~0.2 N37 Tsuen Wan Plaza Block 1 60~70 70 Yes 71~73 70~72 58~65 0.2~0.9 N38 Tsuen Wan Plaza Block 2 58~70 70 Yes - - - - N39 Salvation Army Ng Kwok - 65 Yes Wai Memorial Kindergarten 68~76 68~76 49~56 0~0.1 N40 Clague Garden Estate Block 50~70 70 Yes A 71~79 70~79 55~70 0~0.9 N41 Clague Garden Estate Block 55~70 70 Yes B 71~75 70~74 56~67 0.1~0.8 N42 Clague Garden Estate Block 66~70 70 Yes C 71~78 70~78 38~68 0~0.9 N43 Skyline Plaza 58~70 70 Yes 71~76 70~76 41~57 0~0.2 N44 Development at TW5 51~70 70 Yes Cityside Tower 10 71~72 71~72 52~65 0.1~0.9 N45 Development at TW5 50~68 70 Yes Cityside Tower 11 - - - - N46 Development at TW5 Bayside 50~70 70 Yes Tower 1 - - - - N47 Development at TW5 Bayside 50~70 70 Yes Tower 2 - - - - N48 Development at TW5 Bayside 47~70 70 Yes Tower 3 - - - - N49 Development at TW5 Bayside 41~70 70 Yes Tower 4 - - - - N50 Development at TW5 Bayside 50~70 70 Yes Tower 5 71~73 70~72 63~64 0.6~0.9 N51 Development at TW5 Bayside 68~70 70 Yes Tower 6 71~72 70~71 59~61 0.2~0.6 N52 Development at TW5 Bayside 64~69 70 Yes Tower 7 - - - - N53 Development at TW5 Bayside 64~70 70 Yes Tower 8 - - - - N54 Development at TW5 Bayside 67~70 70 Yes Tower 9 - - - -

Final EIA Report 3-27 03.Noise Impact (20080922)

NSR ID Descriptions Range of Predicted Noise Level (Mitigated) Noise EIAO [2] (L10,1hour, dB(A)) Standard Criteria Difference Under EIAO- Complied? Overall non-DP DP roads (Overall - TM [1] noise level roads only only non DP Roads N55 Vision City Tower 1 68 70 Yes 71~74 71~74 48~51 0~0.1 N56 Vision City Tower 2 62~70 70 Yes 71~72 71~72 45~47 0~0.1 N57 No. 57 Yeung Uk Road - 70 Yes 78 78 35~37 0

N58 No. 59-77 Yeung Uk Road - 70 Yes 78 78 19 0 N59 Tsuen Wan Caritas Clinic - 55 Yes 79~80 79~80 22 0 N60 No. 85-99 Yeung Uk Road - 70 Yes 80~81 80~81 23 0 N61 Harmony Garden Block 1 - 70 Yes 74~79 74~79 22 0 N62 Harmony Garden Block 2 68~70 70 Yes 71 71 18~19 0 N63 Tsuen Wan Town Lot 394 64~70 70 Yes Tower 1 - - - - N64 Tsuen Wan Town Lot 394 64~70 70 Yes Tower 2 71 70 63 0.7~0.8 N65 Development at TW6 Tower 55~70 70 Yes 1 71~74 70~73 62~66 0.3~0.9 N66 Development at TW6 Tower 54~70 70 Yes 2 71~74 70~73 61~65 0.4~0.9 N67 Development at TW7 Tower 52~70 70 Yes 1 - - - - N68 Development at TW7 Tower 46~69 70 Yes 2 - - - - N69 Development at TW7 Tower 60~70 70 Yes 3 71~72 70~71 62~63 0.5~0.8 N70 Development at TW7 Tower 62~70 70 Yes 4 71 70~71 62~63 0.6~0.9 N71 Development at TW7 Tower 60~70 70 Yes 5 - - - - N72 Development at TW7 Tower 66~70 70 Yes 6 71~73 70~73 46~61 0~0.5 N73 Development at TW7 Tower - 70 Yes 7 73~78 73~77 58~69 0.1~0.7 N74 Waterside Plaza Block 1 52~70 70 Yes 71~73 70~73 50~56 0~0.2 N75 Waterside Plaza Block 2 49~66 70 Yes - - - - N76 Waterside Plaza Block 3 52~69 70 Yes - - - - N77 Waterside Plaza Block 4 50~70 70 Yes 71~72 70~72 61~64 0.5~0.7

Final EIA Report 3-28 03.Noise Impact (20080922)

NSR ID Descriptions Range of Predicted Noise Level (Mitigated) Noise EIAO [2] (L10,1hour, dB(A)) Standard Criteria Difference Under EIAO- Complied? Overall non-DP DP roads (Overall - TM [1] noise level roads only only non DP Roads N78 Proposed School Site at TW7 60~65 65 Yes 66~76 65~76 58~65 0.2~0.8 N79 Shak Chung Shan Memorial - 65 Yes Catholic Primary School 71~73 71~73 41~46 0 N80 Riviera Gardens Tower 1 43~70 70 Yes 71~75 71~75 38~62 0~0.5 N81 Riviera Gardens Tower 2 52~69 70 Yes - - - -

N82 Riviera Gardens Tower 3 59~66 70 Yes - - - - N83 Riviera Gardens Tower 4 43~65 70 Yes - - - - N84 Riviera Gardens Tower 17 45~65 70 Yes - - - - N85 Riviera Gardens Tower 18 51~70 70 Yes 71 71 31 0 N86 Riviera Gardens Tower 19 65~70 70 Yes 73~76 73~76 26~32 0 N87 Riviera Gardens Tower 20 - 70 Yes 75~79 75~79 47~61 0~0.2 N88 Riviera Gardens Tower 21 - 70 Yes 73~77 73~77 30~65 0~0.5 N89 Riviera Gardens Tower 22 65~70 70 Yes 71~76 71~76 40~66 0~0.6 N90 S K H Chu Yan Primary - 65 Yes School 71~74 71~74 50 0~0.1 N91 Kwai Shing West Est Block 6 35~70 70 Yes 73~78 73~78 47~55 0~0.1 N92 Kwai Shing West Est Block 8 42~70 70 Yes 71~72 71~72 25~36 0 N93 Kwai Shing West Est Block 9 36~70 70 Yes 71~75 71~75 27~32 0 N94 Kwai Shing West Est Block 56~67 70 Yes 10 - - - - N95 Lee I Yao Secondary School - 65 Yes 81~82 81~82 0 0 N96 Hibiscus Park Block 1 38~55 70 Yes - - - - N97 Hibiscus Park Block 2 45~59 70 Yes - - - - Notes: 1. EIAO noise criteria are complied if (a) overall noise level ≤ noise standards under EIAO-TM, or (b) noise level from DP roads only ≤ noise standards under EIAO-TM and difference between overall noise level and noise levels of non-DP roads < 1.0 dB(A). 2. Each representative NSR is divided into two groups according to the overall noise level, namely (a) that with overall noise level ≤ noise standards under EIAO-TM (upper row) and (b) that with overall noise level > noise

Final EIA Report 3-29 03.Noise Impact (20080922)

standards under EIAO-TM (lower row). For group (a), three kinds of predicted noise levels, i.e. noise level from non-DP roads only, noise levels from DP roads only, and difference between overall noise levels and noise levels from non-DP roads only, are not considered (shaded). “-“ indicates that there is no assessment point represented for that NSR belongs to that overall noise level group.

Table 3-10 Total Number of Dwellings, Classrooms and Other Noise Sensitive Elements that will be Benefited From and be Protected by Provision of the Direct Noise Mitigation Measures a) Dwellings NSR Descriptions No. of No of Dwellings No of Dwellings No of Dwellings ID Dwellings Subject to Noise Benefited from Protected by Represented Exceeding EIAO Noise Mitigation Noise Mitigation Noise Criteria [1] Measures [2] Measures [3] N1 Tsuen Tak Gardens Block A 240 0 0 0 N2 Tsuen Tak Gardens Block B 248 0 0 0 N3 Tsuen Tak Gardens Block C 248 0 0 0 N4 Tsuen Tak Gardens Block D 248 124 0 0 N5 Tsuen Tak Gardens Block E 248 120 0 0 N6 Joyful Building Block A 108 0 0 0 N7 Joyful Building Block B 108 0 0 0 N8 Sheeny Terrace 104 0 0 0 N9 Summit Terrace Tower 1 312 156 0 0 N10 Summit Terrace Tower 2 312 153 0 1 N11 Summit Terrace Tower 3 320 135 13 6 N12 Summit Terrace Tower 5 320 159 27 35 N14 Tsuen Wan Adventist Hospital 25 0 0 0 Staff Quarter N15 Allway Gardens Block A 176 0 0 0 N16 Allway Gardens Block B 176 0 0 0 N17 Allway Gardens Block C 176 0 0 0 N19 The Panorama 344 215 79 36 N20 Phase I Belvedere Garden Block 1 280 135 41 40 N21 Phase I Belvedere Garden Block 2 280 81 0 1 N22 Phase I Belvedere Garden Block 3 280 68 0 2 N23 Serenade Cove Block A 264 99 0 0 N24 Serenade Cove Block B 256 146 0 3 N25 Serenade Cove Block C 264 75 0 17 N26 Phase III Belvedere Garden Block 328 159 0 4 7 N27 Phase III Belvedere Garden Block 328 123 0 0 6 N28 Phase III Belvedere Garden Block 328 123 0 0 5 N29 Fu Yung House 28 28 0 0 N30 Yan Wai Garden 46 34 0 1 N31 Tak Yan Building Stage 15 24 0 0 0 N32 On Hong Building 192 0 0 0 N33 Kan Fat Building 100 0 0 0 N34 Heung Wo Building 84 0 0 0 N35 On Fung Building 80 0 0 0 N37 Tsuen Wan Plaza Block 1 240 126 3 5

Final EIA Report 3-30 03.Noise Impact (20080922)

NSR Descriptions No. of No of Dwellings No of Dwellings No of Dwellings ID Dwellings Subject to Noise Benefited from Protected by Represented Exceeding EIAO Noise Mitigation Noise Mitigation Noise Criteria [1] Measures [2] Measures [3] N38 Tsuen Wan Plaza Block 2 240 0 0 10 N40 Clague Garden Estate Block A 480 362 342 9 N41 Clague Garden Estate Block B 480 237 250 13 N42 Clague Garden Estate Block C 480 383 338 7 N43 Skyline Plaza 280 105 83 13 N44 Development at TW5 Cityside 450 45 98 53 Tower 10 N45 Development at TW5 Cityside 468 0 35 35 Tower 11 N46 Development at TW5 Bayside 294 0 43 43 Tower 1 N47 Development at TW5 Bayside 294 0 25 25 Tower 2 N48 Development at TW5 Bayside 294 0 27 27 Tower 3 N49 Development at TW5 Bayside 273 0 32 32 Tower 4 N50 Development at TW5 Bayside 234 115 117 2 Tower 5 N51 Development at TW5 Bayside 252 47 104 57 Tower 6 N52 Development at TW5 Bayside 252 0 0 0 Tower 7 N53 Development at TW5 Bayside 252 0 0 7 Tower 8 N54 Development at TW5 Bayside 252 0 56 72 Tower 9 N55 Vision City Tower 1 287 120 0 0 N56 Vision City Tower 2 301 114 0 0 N57 No. 57 Yeung Uk Road 5 5 0 0 N58 No. 59-77 Yeung Uk Road 50 50 0 0 N60 No. 85-99 Yeung Uk Road 32 32 0 0 N61 Harmony Garden Block 1 120 96 0 0 N62 Harmony Garden Block 2 120 32 0 0 N63 Tsuen Wan Town Lot 394 Tower 1 132 0 130 130 N64 Tsuen Wan Town Lot 394 Tower 2 132 9 131 122 N65 Development at TW6 Tower 1 384 89 244 155 N66 Development at TW6 Tower 2 368 114 203 89 N67 Development at TW7 Tower 1 264 0 50 50 N68 Development at TW7 Tower 2 264 0 8 8 N69 Development at TW7 Tower 3 264 22 44 22 N70 Development at TW7 Tower 4 252 18 42 24 N71 Development at TW7 Tower 5 252 0 9 9 N72 Development at TW7 Tower 6 240 30 97 67 N73 Development at TW7 Tower 7 240 120 0 0 N74 Waterside Plaza Block 1 222 31 61 31 N75 Waterside Plaza Block 2 222 0 0 0 N76 Waterside Plaza Block 3 192 0 0 0 N77 Waterside Plaza Block 4 186 39 0 0

Final EIA Report 3-31 03.Noise Impact (20080922)

NSR Descriptions No. of No of Dwellings No of Dwellings No of Dwellings ID Dwellings Subject to Noise Benefited from Protected by Represented Exceeding EIAO Noise Mitigation Noise Mitigation Noise Criteria [1] Measures [2] Measures [3] N80 Riviera Gardens Tower 1 248 67 0 1 N81 Riviera Gardens Tower 2 256 0 0 0 N82 Riviera Gardens Tower 3 288 0 0 0 N83 Riviera Gardens Tower 4 288 0 0 0 N84 Riviera Gardens Tower 17 272 0 0 0 N85 Riviera Gardens Tower 18 272 28 0 0 N86 Riviera Gardens Tower 19 240 60 0 0 N87 Riviera Gardens Tower 20 240 120 0 0 N88 Riviera Gardens Tower 21 240 120 0 0 N89 Riviera Gardens Tower 22 240 122 0 0 N91 Kwai Shing West Est Block 6 740 170 0 0 N92 Kwai Shing West Est Block 8 1,056 396 0 0 N93 Kwai Shing West Est Block 9 576 150 0 0 N94 Kwai Shing West Est Block 10 560 0 0 0 N96 Hibiscus Park Block 1 210 0 0 0 N97 Hibiscus Park Block 2 210 0 0 0 Total: 22,855 5,707 2,732 1,264 b) Classrooms NSR Descriptions No. of No of Classrooms No of Classrooms No of Classrooms ID Classrooms Subject to Noise Benefited from Protected by Represented Exceeding EIAO Noise Mitigation Noise Mitigation Noise Criteria [1] Measures [2] Measures [3] N36 Wong Siu Ching Secondary School 48 24 0 0 N39 Salvation Army Ng Kwok Wai 12 12 12 0 Memorial Kindergarten N78 Proposed School Site at TW7 48 24 0 0 N79 Shak Chung Shan Memorial 56 49 0 0 Catholic Primary School N90 S K H Chu Yan Primary School 36 36 0 0 N95 Lee I Yao Secondary School 40 30 0 0 Total: 240 175 12 0 c) Other Noise Sensitive Elements NSR Descriptions No. of Noise No of Noise No of Noise No of Noise ID Sensitive Sensitive Sensitive Sensitive Elements Elements Subject Elements Elements Represented to Noise Benefited from Protected by Exceeding EIAO Noise Mitigation Noise Mitigation Noise Criteria [1] Measures [2] Measures [3] N13 Tsuen Wan Adventist Hospital 36 36 0 0 N18 Wang Fat Ching She 2 0 0 0 N59 Tsuen Wan Caritas Clinic 40 40 0 0 Total: 78 76 0 0 Notes: 1. Number of dwellings, classrooms and other noise sensitive exposed to overall road traffic noise levels exceeding the noise standards stipulated in the EIAO-TM (Table 3-1).

Final EIA Report 3-32 03.Noise Impact (20080922)

2. Dwellings, classrooms and other noise sensitive elements be benefited from noise mitigation measures are those exposed to overall road traffic noise exceeding noise standards stipulated in the EIAO-TM (Table 3-1) under unmitigated scenario and be benefited at least 1.0 dB(A) from the implementation of the noise mitigation measures. 3. Dwellings, classrooms and other noise sensitive elements protected by noise mitigation measures are those exposed to overall road traffic noise exceeding noise standards stipulated in the EIAO-TM (Table 3-1) under unmitigated scenario and exposed to overall road traffic noise compiling with the noise standards stipulated in the EIAO-TM (Table 3-1) with the implementation of the noise mitigation measures.

3.2.6.3. Table 3-9 shows that with the application of the proposed direct noise mitigation measures along the DP roads, the predicted overall road traffic noise levels at all of the identified NSRs will comply with the noise standards stipulated in the EIAO-TM, or that the predicted road traffic noise level from the DP roads only will not exceed the noise standards stipulated in the EIAO-TM and the contribution of traffic noise arising from the DP roads to the overall noise level will be less than 1.0 dB(A). In this connection, the application of indirect noise mitigation measures is considered not necessary. 3.2.6.4. Not used. 3.2.6.5. Despite the compliance of the EIAO noise criteria with the proposed noise mitigation measures at DP roads, it is noted from Table 3-9 that the overall noise levels at some NSRs, particularly at The Panorama and Clague Garden Estate, still exceed the standards by up to 9 dB(A) (N40 - Clague Garden Estate Block A). Discussion of residual impacts is presented in Section 3.2.7. 3.2.6.6. It is estimated, as shown in Table 3-10, that 2,744 of the represented dwellings, classrooms and other noise sensitive elements will be benefited from, and 1,264 of them will be protected by provision of the proposed noise mitigation measures. 3.2.7 Residual Impact 3.2.7.1. Despite the compliance of the EIAO noise criteria with the proposed noise mitigation measures at DP roads, it is noted from Table 3-9 that the overall noise levels, particularly at The Panorama and Clague Garden Estate, still exceed the noise standards stipulated by the EIAO-TM (Table 3-1) by up to 9 dB(A) (N40 - Clague Garden Estate Block A). 3.2.7.2. In order to provide additional noise mitigation to the tenants living at both The Panorama and Clague Garden Estate, a retrofitting study based on the noise mitigation measures presented in this report for the compliance of EIAO noise criteria will be conducted. Results and findings shall be presented in a separate environmental review report. 3.2.8 Environmental Monitoring and Audit 3.2.8.1. Road traffic noise monitoring is recommended at representative NSRs during the first year of the road opening. 3.2.8.2. Recommended noise mitigation measures and their detailed implementation schedules, as well as monitoring procedures and locations are presented in the EM&A Manual. Traffic noise impacts and effectiveness of the noise mitigation measures could be evaluated through the monitoring exercise.

Final EIA Report 3-33 03.Noise Impact (20080922)

3.2.9 Conclusions 3.2.9.1. In this operational noise impact assessment, the potential traffic noise impacts on the identified NSRs within the Assessment Area have been evaluated based on the maximum traffic flow projection of 15 years after the completion of the Project (i.e. Year 2030). It was predicted that the traffic noise levels arising from the Project at some NSRs exceed the EIAO criteria. As a result, direct noise mitigation measures including cantilevered noise barriers, semi and full noise enclosures have been proposed for the compliance of noise criteria stipulated in the EIAO-TM and EIAO Guidance Note No. 12/2005. With the incorporation of these proposed direct noise mitigation measures, it is anticipated that the noise levels at all of the identified NSRs will comply with the criteria. Implementation of indirect noise mitigation measures is therefore considered not necessary. 3.2.9.2. In order to provide additional noise mitigation to the tenants living at both The Panorama and Clague Garden Estate, where the overall noise levels exceed the noise standards stipulated in the EIAO-TM, a retrofitting study based on the proposed noise mitigation measures for the compliance of EIAO noise criteria will be conducted. Results and findings shall be presented in a separate environmental review report. 3.2.9.3. Monitoring of road traffic noise is recommended to verify the effectiveness of the mitigation scheme during the first year after road opening. More details are provided in the stand-alone EM&A Manual. 3.3 Construction Noise 3.3.1 Environmental Legislations, Policies, Plans and Standards 3.3.1.1. In Hong Kong, control of construction noise is carried out under the Noise Control Ordinance (NCO) and the two subsidiary Technical Memoranda on Noise from Percussive Piling (PP-TM) and Noise from Construction Work Other Than Percussive Piling (GW-TM). Construction Noise Permit (CNP) is required for carrying out percussive piling at daytime on a day not being a general holiday and for carrying out general construction works during restricted hours (i.e. 1900 to 0700 hours on a day not being a general holiday and at any time on a general holiday). In addition, there are provisions under the Environmental Impact Assessment Ordinance (EIAO) and the associated Technical Memorandum (EIAO-TM) for assessing the impacts from construction activities during 0700 to 1900 hours on a day not being a general holiday. 3.3.1.2. An additional technical memorandum, the Technical Memorandum on Noise from Construction Work in Designated Areas (DA-TM), deals with the control of noise generated by Specified Powered Mechanical Equipment (SPME) and Prescribed Construction Works (PCWs) in designated areas. SPME includes hand-held breaker, bulldozer, concrete lorry mixer, dump truck and hand-held poker vibrator; PCWs include erection/dismantling of formwork/scaffolding, loading/unloading or handling of rubble, wooden boards, steel bars, wood or scaffolding material, and hammering. Since a section of the Assessment Area between Tai Chung Interchange and Tsuen Tsing Interchange is within the designated areas, CNP is required for this section of the Project for carrying out PCWs and construction works involving the use of SPME during restricted hours (i.e. 1900 to 0700 hours and anytime on a general holiday).

Final EIA Report 3-34 03.Noise Impact (20080922)

3.3.1.3. For constructions carried out on a day not being a general holiday, daytime period (i.e. 0700 to 1900 hours), noise standard of 75 dB(A) Leq,30 min, as stipulated in Table 1B, Annex 5 of the EIAO-TM, is adopted for this assessment for all domestic premises including temporary housing accommodations and hostels. For schools, a daytime noise standard of 70 dB(A) Leq,30 min, lowered to 65 dB(A) Leq,30 min during examination periods, is adopted. These standards apply to uses which rely on opened windows for ventilation. 3.3.1.4. Subsidiary regulations of the NCO include the Noise Control (Hand Held Percussive Breakers) and Noise Control (Air Compressors) Regulations, which require compliance with relevant noise emission standards and the fixing of noise emission labels to specified plants and equipment. While these requirements are not directly relevant to the construction noise impact assessment, contractors must meet them during the construction phase of the Project. 3.3.1.5. Percussive piling is prohibited between 1900 and 0700 hours on a day not being a general holiday and at any time on a general holiday. A CNP is required for carrying out of percussive piling between 0700 and 1900 hours on a day not being a general holiday. 3.3.2 Assessment Methodology 3.3.2.1. Methodology for assessing noise from the construction activities associated with the proposed works is developed based on the GW-TM and is summarized as follows: • location of appropriate NSRs with respect to the work sites; • determination of distance attenuation and screening effects to NSRs from notional noise source of relevant work site; • prediction of construction noise levels at NSRs in the absence of any mitigation measures; • proposal of mitigation measures and determine their effectiveness; and • determination of the residual impacts. 3.3.2.2. The construction noise impacts have been assessed against the noise standards given in the EIAO-TM as follows:

• 75 dB(A) Leq,30min for residential dwellings;

• 70 dB(A) Leq,30min for schools; and • 65 dB(A) Leq,30min for schools during examination period. 3.3.2.3. The construction noise impacts have been assessed at the identified NSRs as listed in Table 3-3. 3.3.3 Prediction and Evaluation of Noise Impacts 3.3.3.1. Construction activities for the proposed upgrading works in the Project include the following: • slope excavation; • reinforced slopes and slope compaction;

Final EIA Report 3-35 03.Noise Impact (20080922)

• slope trimming and landscaping; • bridge deck construction; • road pavement construction; • road drainage construction; and • piling works 3.3.3.2. The extent of construction noise impacts depends on the type and number of Power Mechanical Equipment (PME) to be used in different construction activities and varies during different construction phases. As shown in Figure 2-3, the proposed construction programme is expected to last for 48 months, from June 2011 to May 2015. The construction activities are expected to be conducted only during normal daytime working hours (i.e. 0700 to 1900 hours on any day not being a Sunday or public holiday). The corresponding predicted construction noise levels of the construction activities listed in Section 3.3.3.1 at the representative NSRs between Year 2010 and 2015 are shown in Table 3-11. Detailed calculations of the construction noise impact assessment and complete PME inventory are provided in Appendix 3-M. 3.3.3.3. Planned NSRs have also been taken into account in this construction noise assessment. Correspondence showing anticipated completion dates of planned residential developments at TW5, TW6 and TW7 are shown in Appendix 3-P. The period during which respective planned NSRs would be exposed to the construction noise impact from the Project are as follows: • Development at TW5 (N44 to N54) January 2015 to May 2015. • Development at TW6 (N65 to N66) June 2011 to May 2015 • Development at TW7 (N67 to N73) January 2012 to May 2015. • Development at TWTL 394 (N63 to N64) June 2011 to May 2015 • Proposed School Site at TW7 (N78) June 2011 to May 2015 3.3.3.4. The predicted construction noise levels shown in Table 3-11 indicate that construction activities of the Project, if unmitigated, would result in exceedance of the daytime construction noise criteria during normal working hours at 31 existing NSRs and 21 planned NSRs. Mitigation measures are therefore considered necessary to reduce the construction noise impact to acceptable levels.

Table 3-11 Predicted Construction Noise Levels at Representative NSRs during Normal Daytime Working Hours under the Unmitigated Scenario

Final EIA Report 3-36 03.Noise Impact (20080922)

Maximum Predicted Construction Noise Levels at each Assessment Year ANL, (Leq, dB(A)) NSR ID Descriptions Land Use dB(A) 2011 2012 2013 2014 2015 N1 Tsuen Tak Gardens Block A Residential 75 71 71 71 67 40 N2 Tsuen Tak Gardens Block B Residential 75 70 71 71 70 62 N3 Tsuen Tak Gardens Block C Residential 75 70 72 72 70 61 N4 Tsuen Tak Gardens Block D Residential 75 70 71 71 71 62 N5 Tsuen Tak Gardens Block E Residential 75 71 73 73 71 63 N6 Joyful Building Block A Residential 75 73 73 73 71 63 N7 Joyful Building Block B Residential 75 72 72 72 70 62 N8 Sheeny Terrace Residential 75 74 74 73 71 64 N9 Summit Terrace Tower 1 Residential 75 73 74 74 71 63 N10 Summit Terrace Tower 2 Residential 75 77 78 78 75 67 N11 Summit Terrace Tower 3 Residential 75 78 79 79 75 68 N12 Summit Terrace Tower 5 Residential 75 80 80 79 76 69 N13 Tsuen Wan Adventist Hospital Hospital 70 74 74 72 70 62 Tsuen Wan Adventist Hospital Staff N14 Residential 75 74 75 75 72 65 Quarter N15 Allway Gardens Block A Residential 75 73 74 74 71 64 N16 Allway Gardens Block B Residential 75 72 72 71 69 62 N17 Allway Gardens Block C Residential 75 72 72 71 69 62 Place of N18[4] Wang Fat Ching She 70 79 73 70 67 62 Worship N19 The Panorama Residential 75 81 84 78 78 72 N20 Phase I Belvedere Garden Block 1 Residential 75 74 75 72 72 65 N21 Phase I Belvedere Garden Block 2 Residential 75 73 74 72 71 63 N22 Phase I Belvedere Garden Block 3 Residential 75 71 72 71 69 62 N23 Serenade Cove Block A Residential 75 74 76 75 72 64 N24 Serenade Cove Block B Residential 75 74 76 74 73 65 N25 Serenade Cove Block C Residential 75 74 76 74 72 65 N26 Phase III Belvedere Garden Block 7 Residential 75 59 43 43 43 40 N27 Phase III Belvedere Garden Block 6 Residential 75 59 43 43 43 40 N28 Phase III Belvedere Garden Block 5 Residential 75 58 43 43 43 40 N29 Fu Yung House Residential 75 70 75 77 75 71 N30 Yen Wai Garden Residential 75 68 68 71 71 69 N31 Tak Yan Building Stage 15 Residential 75 69 69 71 71 69 N32 On Hong Building Residential 75 69 69 71 71 70 N33 Kan Fat Building Residential 75 70 70 72 72 71

Final EIA Report 3-37 03.Noise Impact (20080922)

Maximum Predicted Construction Noise Levels at each Assessment Year ANL, (Leq, dB(A)) NSR ID Descriptions Land Use dB(A) 2011 2012 2013 2014 2015 N34 Heung Wo Building Residential 75 69 69 72 72 70 N35 On Fung Building Residential 75 70 72 75 75 72 N36 Wong Siu Ching Secondary School School 65/70 [2] 76 80 81 81 76 N37 Tsuen Wan Plaza Block 1 Residential 75 72 72 75 75 73 N38 Tsuen Wan Plaza Block 2 Residential 75 71 71 73 73 72 Salvation Army Ng Kok Wai Memorial N39 School 65/70 [2] 83 91 94 93 88 Kindergarten N40 Clague Garden Estate Block A Residential 75 82 87 88 87 82 N41 Clague Garden Estate Block B Residential 75 79 85 86 86 81 N42 Clague Garden Estate Block C Residential 75 82 89 92 92 87 N43 Skyline Plaza Residential 75 84 85 87 87 84 N44 Development at TW5 Cityside Tower 10 Residential 75 83 N45 Development at TW5 Cityside Tower 11 Residential 75 78 N46 Development at TW5 Bayside Tower 1 Residential 75 76 N47 Development at TW5 Bayside Tower 2 Residential 75 40 N48 Development at TW5 Bayside Tower 3 Residential 75 76 N49 Development at TW5 Bayside Tower 4 Residential 75 [1] 40 N50 Development at TW5 Bayside Tower 5 Residential 75 77 N51 Development at TW5 Bayside Tower 6 Residential 75 79 N52 Development at TW5 Bayside Tower 7 Residential 75 85 N53 Development at TW5 Bayside Tower 8 Residential 75 86 N54 Development at TW5 Bayside Tower 9 Residential 75 86 N55 Vision City Tower 1 Residential 75 75 79 79 79 74 N56 Vision City Tower 2 Residential 75 70 70 73 73 71 N57 No. 57 Yeung Uk Road Residential 75 74 78 78 76 70 N58 No. 59-77 Yeung Uk Road Residential 75 66 66 62 62 61 N59[4] Tsuen Wan Caritas Clinic Clinic 70 73 77 77 75 67 N60 No. 85-99 Yeung Uk Road Residential 75 71 74 74 69 64 N61 Harmony Garden Block 1 Residential 75 70 73 73 66 60 N62 Harmony Garden Block 2 Residential 75 70 72 72 65 60 N63 Development at TWTL 394 Tower 1 Residential 75 77 81 81 80 72 N64 Development at TWTL 394 Tower 2 Residential 75 78 82 81 79 72 N65 Development at TW6 Tower 1 Residential 75 82 86 86 84 72 N66 Development at TW6 Tower 2 Residential 75 83 87 86 81 72 N67 Development at TW7 Tower 1 Residential 75 [1] 90 89 85 79

Final EIA Report 3-38 03.Noise Impact (20080922)

Maximum Predicted Construction Noise Levels at each Assessment Year ANL, (Leq, dB(A)) NSR ID Descriptions Land Use dB(A) 2011 2012 2013 2014 2015 N68 Development at TW7 Tower 2 Residential 75 [1] 89 89 87 81 N69 Development at TW7 Tower 3 Residential 75 89 88 86 81 N70 Development at TW7 Tower 4 Residential 75 86 86 86 80 N71 Development at TW7 Tower 5 Residential 75 86 86 86 81 N72 Development at TW7 Tower 6 Residential 75 89 89 90 84 N73 Development at TW7 Tower 7 Residential 75 92 92 87 81 N74 Waterside Plaza Block 2 Residential 75 87 90 90 88 76 N75 Waterside Plaza Block 2 Residential 75 87 90 89 88 77 N76 Waterside Plaza Block 3 Residential 75 86 89 89 87 77 N77 Waterside Plaza Block 4 Residential 75 84 87 87 85 76 N78 Proposed School Site at TW7 School 65/70 [2] 82 85 85 83 73 Shak Chung Shan Memorial Catholic N79 School 65/70 [2] 79 82 81 79 71 Primary School N80 Riviera Gardens Tower 1 Residential 75 77 80 80 78 69 N81 Riviera Gardens Tower 2 Residential 75 73 75 74 72 40 N82 Riviera Gardens Tower 3 Residential 75 70 72 72 70 40 N83 Riviera Gardens Tower 4 Residential 75 68 70 70 69 40 N84 Riviera Gardens Tower 17 Residential 75 70 72 72 70 40 N85 Riviera Gardens Tower 18 Residential 75 69 72 72 70 40 N86 Riviera Gardens Tower 19 Residential 75 68 70 70 68 40 N87 Riviera Gardens Tower 20 Residential 75 72 75 75 74 67 N88 Riviera Gardens Tower 21 Residential 75 75 78 78 76 69 N89 Riviera Gardens Tower 22 Residential 75 76 80 80 78 70 N90 S K H Chu Tan Primary School School 65/70 [2] 76 78 78 75 68 N91 Kwai Shing West Estate Block 6 Residential 75 74 77 77 72 64 N92 Kwai Shing West Estate Block 8 Residential 75 77 78 78 75 69 N93 Kwai Shing West Estate Block 9 Residential 75 74 74 74 73 68 N94 Kwai Shing West Estate Block 10 Residential 75 74 74 74 73 68 N95 Lee I Yao Secondary School School 65/70 [2] 80 80 82 81 75 N96 Hibiscus Park Block 1 Residential 75 67 67 68 67 40 N97 Hibiscus Park Block 2 Residential 75 66 66 43 43 40 Notes: 1. According to the latest construction programme, residential development at TW5 is anticipated to be completed by Year 2015 to 2016. In addition, residential development at TW6 and TW7 is expected to be completed by Year 2012 the earliest. Therefore, these dwellings are not considered as NSRs for construction noise impact before the corresponding year of completion.

Final EIA Report 3-39 03.Noise Impact (20080922)

2. Construction noise standard for schools is 70 dB(A) at normal school days and is reduced to 65 dB(A) during examination period. The more conservative 65 dB(A) standard is applied in this construction noise impact assessment. 3. Noise levels exceeding the construction noise standards are bold. 4. There are no specific daytime construction noise criteria in EIAO-TM for place of worship (N18 Wang Fat Ching She) and clinic (N59 Tsuen Wan Caritus Clinic)

3.3.4 Proposed Noise Mitigation Measures 3.3.4.1. Mitigation measures are required for the NSRs at which unmitigated construction noise levels are predicted to exceed the corresponding construction noise criteria as shown in Table 3-11. Available Construction Noise Mitigation Measures 3.3.4.2. A number of available construction noise mitigation measures have been considered in this assessment, including: • selection and optimization of construction programmes, avoidance of parallel operation of noisy PME, and/or reduction in number and/or the on-time percentage of PME during noise sensitive periods such as school examination period; • use of “quiet” PME and working methods; • use of temporary at-source noise mitigation measures such as noise barriers, noise enclosures, noise jacket and mufflers; and • use of good site practice to limit noise emission from construction site. Selection and Programming of Construction Processes 3.3.4.3. The timing and sequencing of the various construction activities shall be carefully arranged according to the actual site work situation, in order to limit the amount of concurrent activities and where applicable, to avoid parallel operation of noisy PME in order to minimize the total noise generated during construction periods. Limiting the quantity of PME to be operated concurrently and also their on-time percentage were recommended in the Project and incorporated in this assessment. The proposed quantity of PMEs and their percentage on-time have been confirmed feasible by the Project Engineer and the Proponent. In the case during school examination while more stringent construction noise criteria should be imposed, the potentially most disruptive construction activities should be avoided, and arranged to be conducted during school holidays as far as practicable. In particular, NSR 39 (Salvation Army Ng Kok Wai Memorial Kindergarten) is of close proximity to works area S5 and subject to high level of unmitigated construction noise. It is recommended that the work stages “transportation & utilities diversion” and “piling” shall not take place simultaneously during operation time of the kindergarten for the same location in works area S5, such that cumulative noise to this kindergarten is further minimized. This requirement will be specified in the EM&A Manual for Contractor to follow. Use of “Quiet” Alternative Plant and Working Methods 3.3.4.4. The use of particular plant with equipment noise levels quieter than those specified in the GW-TM can result in reduction of noise levels generated by the plant. The level of noise reduction achieved is dependent on the contractor’s chosen methods of working.

Final EIA Report 3-40 03.Noise Impact (20080922)

It is possible for the contractor to achieve noise reductions from the adopted working methodologies by specifying maximum limits of sound power level for specific equipment. 3.3.4.5. “Quiet” plant is defined as a PME having actual Sound Power Levels (SWLs) lower than the values specified for PME in the GW-TM. SWLs for typical PME provided in the GW-TM and that for equivalent “quiet” plants are presented in Table 3-12. 3.3.4.6. The type of quiet PME adopted in this assessment is for reference only and to be confirmed by the contractors, based on the actual construction conditions and programmes. The contractors are allowed to use other type of quiet PME to meet their needs.

Table 3-12 Maximum SWLs for Selected “Quiet” and Alternative Plants

Identification Identification SWL in GW- SWL of “quiet” Code in GW- Descriptions of PME Code in BS5228 TM PME, dB(A) [1] TM [1] CNP 068 Dump Truck 105 C9/20 103 CNP 185 Road Roller 108 C8/25 96 CNP 081 Excavator / loader 112 C3/61 104 CNP 048 Mobile Crane 112 C7/114 101 CNP 142 Lorry 105 C8/25 96 Air Compressor, Air C7/17 CNP 001 100 90 Flow ≤ 10 m3/min CNP 101 Generator, Standard 108 C7/54 89 CNP 044 Concrete Lorry Mixer 109 C6/23 100 Poker Vibrator, Hand- C6/32 CNP 170 113 100 held CNP141 [2] Segment Transporter 112 C9/40[3] 104 CNP004 Asphalt Paver 109 C8/24 101 CNP185 Road Roller 108 C8/25 96 Breaker, excavator C8/13 CNP 028 122 110 mounted CNP 186 Roller, vibratory 108 C3/116 106 Notes: 1. BS-5528 Part 1: 1997 – Noise and Vibration Control on Construction and Open Sites – Part 1: Code of practice for basic information and procedures for noise and vibration control 2. Lorry in GW-TM was referenced considering the task nature and capacity requirement for segment transporter. 3. C9/40 in BS5228 was referenced considering the task nature and capacity requirement for segment transporter.

Temporary Noise Barriers 3.3.4.7. Temporary noise barriers provide noise attenuation by screening NSRs from stationary and mobile plants from direct line-of-sight in shadow zone. The use of 3m high

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movable barriers with skid footing and a small cantilevered upper portion can be adopted. The barrier material shall have a surface mass of not less than 14kg/m2 on skid footing with 25mm thick internal sound absorptive lining to achieve the maximum screening effect. Whilst screening effects can be achieved at upper floors of NSRs, greater benefits result at lower floors where screening is the most effective. These temporary noise barriers will become more effective when located immediately adjacent to working area, and can reduce the noise level by up to 5 dB(A) and 10 dB(A) for mobile and stationary plant, respectively. The temporary noise barriers should also be located along the working area in order to make sure that the construction plant could be screened during all kinds of construction activities as far as practicable. A solid hoarding will also be provided along the NSR 39 of height not less than 3m and length well cover the NSR39, so as to further reduce the construction noise impacts at NSR39. 3.3.4.8. Depending on site situation, when temporary noise barriers are not practicable or noise reduction achieved is insufficient, noise jacket/muffler can be applied to cover the noisy part of the engine or at the engine exhaust of particular mobile plants respectively. Applicable PME with temporary noise barrier include road roller, excavator, mobile crane, hand-held breaker, poker vibrator, excavator mounted breaker, asphalt paver, vibratory roller and paint line marker. It is assumed that temporary noise barriers of this type can provide partial screening effect of 5 dB(A) for mobile plants in the assessment. Considered the practicability, the site access of dump trucks would not be screened by temporary barrier; yet, the unloading activities of dump trucks should be screened by temporary noise barriers. In this connection, the screening effect by temporary barrier on dump truck would not be accounted in the construction noise impact assessment. 3.3.4.9. For the stationary plant bored pile oscillator, temporary noise barriers of sufficient height with skid footing and small cantilevered upper portion can provide total screening to the NSRs. It is estimated that temporary noise barriers of this type can provide full screening of 10 dB(A) to the NSRs. This is considered achievable by careful selection of insulation material, and, if necessary, acoustic mats at noisy mechanical parts of the equipment. Barrier material of surface density of at least 14 kg/m2 is recommended in order to achieve the necessary screening effect. Noise Enclosures 3.3.4.10. Full noise enclosures, which completely cover the PME, can provide significant noise reduction up to 20 dB(A). The degree of reduction will vary depending on the nature of the material used for the enclosures. As an conservative approach, a 10 dB(A) noise attenuation is generally applied to fixed plants in this assessment for air compressor and generator. Good Site Practice 3.3.4.11. The use of good site practice/techniques can provide considerable reductions in noise emissions. Examples of these site practice include: • use of well-maintained and regularly-serviced plant during the works; • plant operating on intermittent basis should be turned off or throttled down when not in active use;

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• plant that is known to emit noise strongly in one direction should be orientated to face away from the NSRs; • silencers, mufflers and enclosures for plant should be used where possible and maintained adequately throughout the works; • where possible fixed plants should be sited away from NSRs; and • stockpiles of excavated materials and other structures such as site buildings should be used effectively to screen noise from the works. 3.3.5 Assessment of Noise Impacts with the Application of Mitigation Measures 3.3.5.1. Construction noise calculations have been carried out with the incorporation of different noise mitigation measures as discussed in Section 3.3.4, as far as practicable according to the actual construction condition and limitation. Mitigation measures adopted in this assessment include: • the use of quiet plants for PME (QPME); • temporary noise barriers for stationary PME, as well as noise jacket and mufflers to cover the noisy part of PME and at the engine exhaust of mobile plants respectively; • noise enclosures for air compressors and generators; and • limiting of number of plants operated concurrently. 3.3.5.2. Construction noise levels at the representative NSRs (which are predicted to be the worst affected by the associated construction works) under the mitigated scenario are summarized in Table 3-13. Detailed calculations of the construction noise impact assessment and complete PME inventory are provided in Appendix 3-M.

Table 3-13 Predicted Construction Noise Levels at Representative NSRs during Normal Daytime Working Hours under the Mitigated Scenario

Maximum Predicted Construction Levels at each Assessment Year (Leq,30min , dB(A)) NSR ID Descriptions Land Use Limit 2011 2012 2013 2014 2015 N1 Tsuen Tak Gardens Block A Residential 75 58 59 57 54 34 N2 Tsuen Tak Gardens Block B Residential 75 58 58 58 58 48 N3 Tsuen Tak Gardens Block C Residential 75 58 59 58 58 48 N4 Tsuen Tak Gardens Block D Residential 75 58 58 59 59 49 N5 Tsuen Tak Gardens Block E Residential 75 59 60 59 59 49 N6 Joyful Building Block A Residential 75 60 60 59 59 49 N7 Joyful Building Block B Residential 75 59 59 58 58 49 N8 Sheeny Terrace Residential 75 62 61 59 59 50

Final EIA Report 3-43 03.Noise Impact (20080922)

Maximum Predicted Construction Levels at each Assessment Year (Leq,30min , dB(A)) NSR ID Descriptions Land Use Limit 2011 2012 2013 2014 2015 N9 Summit Terrace Tower 1 Residential 75 61 61 60 59 50 N10 Summit Terrace Tower 2 Residential 75 65 65 64 63 54 N11 Summit Terrace Tower 3 Residential 75 66 66 64 63 54 N12 Summit Terrace Tower 5 Residential 75 68 67 65 64 55 N13 Tsuen Wan Adventist Hospital Hospital 70 62 61 58 58 49 Tsuen Wan Adventist Hospital Staff N14 Residential 75 Quarter 63 62 61 60 52 N15 Allway Gardens Block A Residential 75 62 61 60 59 51 N16 Allway Gardens Block B Residential 75 61 59 57 57 48 N17 Allway Gardens Block C Residential 75 59 59 57 57 49 Place of N18[4] Wang Fat Ching She 70 Worship 78 60 56 55 48 N19 The Panorama Residential 75 72 71 66 66 58 N20 Phase I Belvedere Garden Block 1 Residential 75 68 63 60 60 52 N21 Phase I Belvedere Garden Block 2 Residential 75 67 61 59 59 50 N22 Phase I Belvedere Garden Block 3 Residential 75 66 59 58 57 49 N23 Serenade Cove Block A Residential 75 64 63 61 60 51 N24 Serenade Cove Block B Residential 75 63 63 61 61 52 N25 Serenade Cove Block C Residential 75 65 63 60 60 51 N26 Phase III Belvedere Garden Block 7 Residential 75 59 35 34 34 34 N27 Phase III Belvedere Garden Block 6 Residential 75 59 35 34 34 34 N28 Phase III Belvedere Garden Block 5 Residential 75 58 35 34 34 34 N29 Fu Yung House Residential 75 59 63 64 63 58 N30 Yen Wai Garden Residential 75 58 58 57 57 56 N31 Tak Yan Building Stage 15 Residential 75 58 58 57 57 57 N32 On Hong Building Residential 75 59 59 58 58 57 N33 Kan Fat Building Residential 75 60 60 59 59 58 N34 Heung Wo Building Residential 75 59 59 58 58 57 N35 On Fung Building Residential 75 59 61 62 62 59 N36 Wong Siu Ching Secondary School School 65/70 [2] 65 68 69 68 63 N37 Tsuen Wan Plaza Block 1 Residential 75 62 62 61 61 61 N38 Tsuen Wan Plaza Block 2 Residential 75 61 61 60 60 59 Salvation Army Ng Kok Wai Memorial N39 School 65/70 [2] Kindergarten 71 79 79 79 74 N40 Clague Garden Estate Block A Residential 75 70 75 75 75 68 N41 Clague Garden Estate Block B Residential 75 68 72 73 73 68

Final EIA Report 3-44 03.Noise Impact (20080922)

Maximum Predicted Construction Levels at each Assessment Year (Leq,30min , dB(A)) NSR ID Descriptions Land Use Limit 2011 2012 2013 2014 2015 N42 Clague Garden Estate Block C Residential 75 71 77 79 79 74 N43 Skyline Plaza Residential 75 73 74 74 73 72 N44 Development at TW5 Cityside Tower 10 Residential 75 70 N45 Development at TW5 Cityside Tower 11 Residential 75 65 N46 Development at TW5 Bayside Tower 1 Residential 75 62 N47 Development at TW5 Bayside Tower 2 Residential 75 34 N48 Development at TW5 Bayside Tower 3 Residential 75 62 N49 Development at TW5 Bayside Tower 4 Residential 75 [1] 34 N50 Development at TW5 Bayside Tower 5 Residential 75 63 N51 Development at TW5 Bayside Tower 6 Residential 75 65 N52 Development at TW5 Bayside Tower 7 Residential 75 71 N53 Development at TW5 Bayside Tower 8 Residential 75 72 N54 Development at TW5 Bayside Tower 9 Residential 75 71 N55 Vision City Tower 1 Residential 75 64 67 66 66 61 N56 Vision City Tower 2 Residential 75 60 60 59 59 59 N57 No. 57 Yeung Uk Road Residential 75 63 66 64 63 57 N58 No. 59-77 Yeung Uk Road Residential 75 54 54 49 49 48 N59[4] Tsuen Wan Caritas Clinic Clinic 70 61 65 63 61 54 N60 No. 85-99 Yeung Uk Road Residential 75 58 61 60 57 50 N61 Harmony Garden Block 1 Residential 75 58 61 59 54 47 N62 Harmony Garden Block 2 Residential 75 57 60 58 53 46 N63 Development at TWTL 394 Tower 1 Residential 75 65 69 67 66 59 N64 Development at TWTL 394 Tower 2 Residential 75 66 69 67 66 59 N65 Development at TW6 Tower 1 Residential 75 70 74 72 70 59 N66 Development at TW6 Tower 2 Residential 75 71 74 72 68 59 N67 Development at TW7 Tower 1 Residential 75 77 75 73 66 N68 Development at TW7 Tower 2 Residential 75 76 75 75 68 N69 Development at TW7 Tower 3 Residential 75 75 74 74 67 N70 Development at TW7 Tower 4 Residential 75 [1] 73 72 74 67 N71 Development at TW7 Tower 5 Residential 75 73 73 74 67 N72 Development at TW7 Tower 6 Residential 75 76 75 78 71 N73 Development at TW7 Tower 7 Residential 75 80 78 74 68 N74 Waterside Plaza Block 2 Residential 75 76 77 76 75 63 N75 Waterside Plaza Block 2 Residential 75 76 76 76 75 63

Final EIA Report 3-45 03.Noise Impact (20080922)

Maximum Predicted Construction Levels at each Assessment Year (Leq,30min , dB(A)) NSR ID Descriptions Land Use Limit 2011 2012 2013 2014 2015 N76 Waterside Plaza Block 3 Residential 75 76 76 75 75 63 N77 Waterside Plaza Block 4 Residential 75 73 74 73 73 62 N78 Proposed School Site at TW7 School 65/70 [2] 71 72 71 70 60 Shak Chung Shan Memorial Catholic N79 School 65/70 [2] Primary School 67 69 68 67 57 N80 Riviera Gardens Tower 1 Residential 75 66 67 66 66 56 N81 Riviera Gardens Tower 2 Residential 75 62 62 60 60 34 N82 Riviera Gardens Tower 3 Residential 75 59 59 58 58 34 N83 Riviera Gardens Tower 4 Residential 75 58 58 57 56 34 N84 Riviera Gardens Tower 17 Residential 75 59 59 58 58 34 N85 Riviera Gardens Tower 18 Residential 75 59 59 58 58 34 N86 Riviera Gardens Tower 19 Residential 75 57 57 56 56 34 N87 Riviera Gardens Tower 20 Residential 75 61 62 62 62 54 N88 Riviera Gardens Tower 21 Residential 75 63 65 64 63 55 N89 Riviera Gardens Tower 22 Residential 75 65 67 66 65 57 N90 S K H Chu Tan Primary School School 65/70 [2] 65 66 65 62 55 N91 Kwai Shing West Estate Block 6 Residential 75 63 65 64 59 51 N92 Kwai Shing West Estate Block 8 Residential 75 65 66 65 62 56 N93 Kwai Shing West Estate Block 9 Residential 75 63 63 63 60 56 N94 Kwai Shing West Estate Block 10 Residential 75 63 62 62 59 55 N95 Lee I Yao Secondary School School 65/70 [2] 69 69 69 67 62 N96 Hibiscus Park Block 1 Residential 75 56 55 55 53 34 N97 Hibiscus Park Block 2 Residential 75 54 52 34 34 34 Notes: 1. According to the latest programme, residential development at TW5 is anticipated to be completed by Year 2015 to 2016. In addition, residential development at TW6 and TW7 is expected to be completed by Year 2012 the earliest. Therefore, these dwellings are not considered as NSR for construction noise impact before the corresponding year of completion. 2. Construction noise standard for schools is 70 dB(A) at normal school days and is reduced to 65 dB(A) during examination period. The more conservative 65 dB(A) standard is applied in this construction noise impact assessment. 3. Noise levels exceeding the construction noise standards are bold. 4. There are no specific daytime construction noise criteria in EIAO-TM for place of worship (N18 Wang Fat Ching She) and clinic (N59 Tsuen Wan Caritus Clinic)

3.3.5.3. In view of the results listed on Table 3-13, it can be noted that the predicted construction noise levels with noise mitigation measures at the majority of the representative NSRs shall comply with the corresponding construction noise limits.

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Slight exceedance in predicted construction noise levels would occur at the following NSRs at different stages of the construction work: • N18 - Wang Fat Ching She (no specific daytime construction noise criteria in EIAO-TM) • N36 - Wong Siu Ching Secondary School (during examination period only) • N39 - Salvation Army Ng Kok Wai Memorial Kindergarten (during both normal and examination periods) • N42 - Clague Garden Estate Block C • N67 – Development at TW7 Tower 1 • N68 – Development at TW7 Tower 2 • N72 – Development at TW7 Tower 6 • N73 - Development at TW7 Tower 7 • N74 - Waterside Plaza Block 1 • N75 – Waterside Plaza Block 2 • N76 – Waterside Plaza Block 3 • N78 - Proposed School Site at TW7 (during examination period only) • N79 - Shak Chung Shan Memorial Catholic Primary School (during examination period only) • N90 - S K H Chu Tan Primary School (during examination period only) • N95 - Lee I Yao Secondary School (during examination period only) 3.3.5.4. Discussion of residual impacts is presented in Section 3.3.6. 3.3.6 Residual Impact 3.3.6.1. In view of the results listed on Table 3-13, it can be noted that the predicted construction noise level with noise mitigation measures at the majority of the representative NSRs shall comply with the corresponding construction noise limits. Slight exceedance of predicted construction noise level would occur at some of the NSRs at different stages of the construction work. The list of subjected NSRs and their residual construction noise impacts are summarized in Table 3-14.

Table 3-14 Residual Construction Noise Impact after Application of Noise Mitigation Measures NSR Descriptions Predicted Predicted Predicted Period of Period of Construction ID Construction Construction Construction Exceedance Exceedance Noise Levels under Levels under Noise due to (Overall (due to this Criteria, Unmitigated Mitigated the Project Noise Project dB(A) Scenario, Scenario, ONLY Level) only) dB(A) dB(A) under Mitigated Scenario, dB(A) N18 Wang Fat 62-79 47-78 46-60 June 2011 Nil 70 [5] Ching She to December 2011

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NSR Descriptions Predicted Predicted Predicted Period of Period of Construction ID Construction Construction Construction Exceedance Exceedance Noise Levels under Levels under Noise due to (Overall (due to this Criteria, Unmitigated Mitigated the Project Noise Project dB(A) Scenario, Scenario, ONLY Level) only) dB(A) dB(A) under Mitigated Scenario, dB(A) N36[3] Wong Siu 72-81 59-69 58-68 July 2012 to September 65 / 70 [2] Ching July 2014 2012 to Secondary February School 2014 N39 Salvation 73-94 71-79 70-79 June 2011 June 2011 65 / 70 [2] Army Ng to April to April Kok Wai 2015 2015 Memorial Kindergarten N42 Clague 73-88 69-79 45-79 September September 75 Garden 2012 to July 2012 to Estate Block 2014 April 2014 C N67 Development 79-89 64-77 64-77 January January 75 at TW7 2012 to 2012 to Tower 1 September September 2012 2012 N68 Development 79-89 66-76 66-76 January February 75 at TW7 2012 to 2012 to Tower 2 September September 2012 2012 N72 Development 82-90 69-78 69-78 December December 75 at TW7 2012; 2012; Tower 6 January January 2014 to July 2014 to July 2014 2014 N73[1] Development 80-92 65-80 65-80 January January 75 at TW7 2012 to 2012 to Tower 7 May 2013 May 2013 N74 Waterside 76-90 60-77 60-72 June 2011 Nil 75 Plaza Block to March 1 2013 N75 Waterside 76-90 61-76 61-71 June 2011 Nil 75 Plaza Block to March 2 2013 N76 Waterside 76-89 61-76 61-70 June 2011 Nil 75 Plaza Block to April 3 2012; December 2012 N78[1] Proposed 73-85 56-72 56-69 June 2011 January 65 / 70 [2] School Site to 2012 to at TW7 December March 2014 2014

Final EIA Report 3-48 03.Noise Impact (20080922)

NSR Descriptions Predicted Predicted Predicted Period of Period of Construction ID Construction Construction Construction Exceedance Exceedance Noise Levels under Levels under Noise due to (Overall (due to this Criteria, Unmitigated Mitigated the Project Noise Project dB(A) Scenario, Scenario, ONLY Level) only) dB(A) dB(A) under Mitigated Scenario, dB(A) N79[4] Shak Chung 69-82 54-69 54-67 June 2011 April 2012 65 / 70 [2] Shan to July 2014 to March Memorial 2013 Catholic Primary School N90[3] SKH Chu 65-78 52-66 52-66 June 2012 June 2012 65 / 70 [2] Tan Primary to to School September September 2012 2012 N95[4] Lee I Yao 75-82 62-69 62-69 June 2011 June 2011 65 / 70 [2] Secondary to July 2014 to January School 2013; March 2013 to July 2014 Notes: 1. Planned development 2. Assessment criteria of 70 dB(A) for normal days and 65 dB(A) during examinations 3. Under “Noise Abatement Programme in Schools” Stage IV, refer to Section 3.2.2 4. Double-glazed window and window type air-conditioners noted on site visit 5. There are no specific daytime construction noise criteria in EIAO-TM for place of worship (N18 Wang Fat Ching She)

3.3.6.2. There are 15 NSRs with predicted construction noise level exceeding the corresponding construction noise criteria under the mitigated scenario, while 5 of them (N67, N68, N72, N73 and N78) are planned developments. 3.3.6.3. For other NSRs (N18, N36, N39, N42, N74, N75, N76, N79, N90 and N95), it is recommended that more detailed construction work programme should be considered before actual construction work is undertaken by the contractor, and applicable noise mitigation measures should be implemented according to the actual site condition and constraints, in order to minimize the potential construction noise impact. In particular, special arrangement on PME operations should be determined during school examination period. 3.3.6.4. In addition, a detailed work programme according to the environmental monitoring and audit manual should be provided by the Environmental Team (ET) of the Contractor, and to be approved by Independent Environmental Checker (IEC) before actual implementation. 3.3.7 Environmental Monitoring and Audit 3.3.7.1. Environmental monitoring and audit measures are recommended during the construction phase of the Project. Schedule and extent of the monitoring programme is presented in the stand-alone Environmental Monitoring and Audit (EM&A) Manual. A

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proactive EM&A programme is necessary to be provided by the contractor, in order to ensure that construction noise impact to the NSRs should be minimized as far as practicable. An appropriate path for noise complaints handling procedures is a key element of the EM&A programme. Detailed implementation schedules of all mitigation measures are also provided in the EM&A Manual. 3.3.8 Conclusions 3.3.8.1. Practical mitigation measures such as the use of QPME employed in the works, temporary noise barriers, noise jackets, mufflers, noise enclosures and limiting the number of plants operated concurrently, are proposed to minimize construction noise impact. 3.3.8.2. Further mitigation including good site practices as mentioned in Section 3.3.4, as well as proper scheduling to avoid noisy construction during school examinations, can be adopted to further minimize the construction noise impact. 3.3.8.3. Environmental monitoring and audit should be implemented to ensure the application of necessary noise mitigation measures, construction noise monitoring, as well as to establish an appropriate path for noise complaints handling. EM&A Manual will be prepared in separate with this report.

Final EIA Report 3-50 03.Noise Impact (20080922)