Figure 9.1A	Locations of Noise Sensitive Receivers (Overview) (Sheet 1 of 3)
Figure 9.1A_1	Locations of Noise Sensitive Receivers (Overview) (Sheet 2 of 3)
Figure 9.1A_2	Locations of Noise Sensitive Receivers (Overview) (Sheet 3 of 3)
Figure 9.1B	Locations of Noise Sensitive Receivers and Noise Assessment Points (Construction Noise) (Sheet 1 of 3)
Figure 9.1B_1	Locations of Noise Sensitive Receivers and Noise Assessment Points (Construction Noise) (Sheet 2 of 3)
Figure 9.1B_2	Locations of Noise Sensitive Receivers and Noise Assessment Points (Construction Noise) (Sheet 3 of 3)
Figure 9.1C	Locations of Noise Sensitive Receivers and Noise Assessment Points (Traffic Noise) (Sheet 1 of 3)
Figure 9.1C_1	Locations of Noise Sensitive Receivers and Noise Assessment Points (Traffic Noise) (Sheet 2 of 3)
Figure 9.1C_2	Locations of Noise Sensitive Receivers and Noise Assessment Points (Traffic Noise) (Sheet 3 of 3)
Figure 9.1D	Locations of Noise Sensitive Receivers and Noise Assessment Points (Fixed Noise Sources) (Sheet 1 of 3)
Figure 9.1D_1	Locations of Noise Sensitive Receivers and Noise Assessment Points (Fixed Noise Sources) (Sheet 2 of 3)
Figure 9.1D_2	Locations of Noise Sensitive Receivers and Noise Assessment Points (Fixed Noise Sources) (Sheet 3 of 3)
Figure 9.2	Location of Representative NSRs and NAPs for Construction Noise Impact Assessment
Figure 9.3	Surrounding Road Network
Figure 9.4	Location of Representative NSRs and NAPs for Road Traffic Noise Impact Assessment
Figure 9.5	Location of Representative NSRs and NAPs for Fixed Noise Sources Impact Assessment
Figure 9.6	Location of Identified Fixed Noise Sources

Appendices

Appendix 9.1	Photographs of the Existing Representative Noise Sensitive Receivers
Appendix 9.2	Results of Construction Noise Impact Assessment
Appendix 9.3	Traffic Forecast
Appendix 9.4	Compute Plot of Road Traffic Noise Model
Appendix 9.5	Results of Traffic Noise Impact Assessment (Unmitigated)
Appendix 9.6	Locations of Potential Fixed Noise Sources under the Project
Appendix 9.7	Information of Existing Fixed Noise Sources
Appendix 9.8	Results of Fixed Noise Sources Impact Assessment (Unmitigated)

Glossary

ANL	Acceptable Noise Level
ASR	Area Sensitivity Rating
CNL	Corrected Noise Level
CNMP	Construction Noise Management Plan
CNP	Construction Noise Permit
CRTN	Calculation of Road Traffic Noise
DPs	Designated Projects
E&M	Electrical & Mechanical
EIA	Environmental Impact Assessment
EIAO	Environmental Impact Assessment Ordinance
EIAO-TM	Technical Memorandum on Environmental Impact Assessment Process
EPD	Environmental Protection Department
FNMP	Fixed Noise Management Plan
GW-TM	Technical Memorandum on Noise from Construction Work other than Percussive Piling
IFs	Influencing Factors
IND-TM	Technical Memorandum on Noise from Places other than Domestic Premises, Public Places or Construction Sites
LC	Lut Chau
MLP	Master Layout Plan
NAPs	Noise Assessment Points
NCO	Noise Control Ordinance
NIA	Noise Impact Assessment
NSRs	Noise Sensitive Receivers
NSW	Nam Sang Wai
OZP	Outline Zoning Plan
PME	Powered Mechanical Equipment
PNL	Predicted Noise Level
QPME	Quality Powered Mechanical Equipment
SPL	Sound Pressure Level
SWL	Sound Power Level
TD	Transport Department
TMs	Technical Memoranda
TNMP	Traffic Noise Management Plan
YLBS	Yuen Long Barrage Scheme
YLEPP	Yuen Long Effluent Polishing Plant
YLIE	Yuen Long Industrial Estate
YLRSC	Yuen Long Road Safety Centre
YLTN	Yuen Long Town Nullah

9 Noise Impact

9.1 Introduction

9.1.1 This section presents the assessment of potential noise impacts associated with the construction and operational phases of the Project, which has been conducted in accordance with the criteria and guidelines as stated in Annex 5 and Annex 13 of the Technical Memorandum on Environmental Impact Assessment Process (EIAO-TM) as well as the requirements given in Clause 3.4.7 and Appendix H of the EIA Study Brief (ESB-244/2012).

9.2 Environmental Legislations, Standards and Guidelines

Construction Phase

9.2.1 Control over the generation of construction noise from Designated Projects (DPs) under Environmental Impact Assessment Ordinance (EIAO) in Hong Kong is governed by the EIAO and the Noise Control Ordinance (NCO). The EIAO Guidance Note on Preparation of Construction Noise Impact Assessment Under the Environmental Impact Assessment Ordinance (GN 9/2023) provides some good practices to the practitioners on the preparation of Construction Noise Impact Assessment (CNIA) of Environmental Impact Assessment (EIA) studies for DPs under the EIAO. The NCO is to provide statutory controls for carrying out construction work using Powered Mechanical Equipment (PME) and prescribed construction works during the restricted hours. The noise standards for daytime construction activities of DPs are in accordance with Table 1B, Annex 5 of Technical Memorandum on Environmental Impact Assessment Process (EIAO-TM). The Technical Memoranda (TMs) applicable to the control of noise from construction activities of the proposed construction works of the Project are:

● TM on Environmental Impact Assessment Process (EIAO-TM)

● TM on Noise from Construction Work other than Percussive Piling (GW-TM)

9.2.2 These TMs prescribe the maximum permitted noise levels for the use of PME and certain construction activities and processes, according to the type of equipment or activity, the perceived noise climate of the area and the working hours of equipment operation and usage.

9.2.3 The works area of this project will fall outside the Designated Areas. Therefore, the TM on Noise from Construction Work in Designated Areas is not applicable to the Project.

9.2.4 According to the proposed construction methodology, percussive piling is not required for the Project. Therefore, the TM on Noise from Percussive Piling is not applicable to the Project.

9.2.5 Noise impacts arising from general construction activities other than percussive piling during the daytime period (0700 – 1900 hours of any day not being a Sunday or general holiday) would be assessed against the noise standards tabulated in Table 9.1 below.

Table 9.1: Noise Standards for Daytime Construction Activities

Noise Sensitive Receiver	0700 to 1900 hours on any day not being a Sunday or general holiday, L_eq_{(30 mins)}, dB(A)
● All domestic premises including temporary housing accommodation	75
● Hotels and hostels	75
● Educational institutions including kindergartens, nurseries and all others where unaided voice communication is required	70 65 (during examinations)

Source: EIAO-TM, Annex 5, Table 1B - Noise Standards for Daytime Construction Activities

Notes:

(i) The above standards apply to uses which rely on opened windows for ventilation and are assessed at 1m from the external façade.

9.2.6 Practice Note on Minimizing Noise from Construction Activities (ProPECC PN1/24) provides a brief summary on the existing control on noise from construction activities under the NCO and EIAO, as well as the requirements and recommendations on the practices for minimizing construction noise.

General Construction Activities during Restricted Hours

9.2.7 Noise impacts arising from general construction activities (excluding percussive pilling) conducted during the restricted hours (1900 to 0700 hours on any day and anytime on Sunday or general holiday) and percussive pilling during anytime are controlled under the NCO.

9.2.8 For carrying out of any general construction activities involving the use of any PME within restricted hours, a Construction Noise Permit (CNP) is required from the Noise Control Authority under the NCO. The noise criteria and the assessment procedures for issuing a CNP are specified in the GW-TM under the NCO.

9.2.9 Regardless of any description or assessment made in this section, when assessing a filed application for a CNP, the Noise Control Authority will be guided by the relevant TMs. The Noise Control Authority will consider all the factors affecting their decision taking contemporary situations/ conditions into account. Nothing in this Report shall pre-empt the Noise Control Authority in making their decisions, and there is no guarantee that a CNP will be issued. If a CNP is to be issued, the Noise Control Authority may include any conditions they consider appropriate and such conditions are to be followed while the works covered by the CNP are being carried out. Failing to do so may lead to cancellation of the permit and prosecution action under the NCO.

9.2.10 According to the construction programme, the proposed construction works would be carried out during nonrestricted hours, i.e., 0700-1900 hours on any day not being a Sunday or general holiday. In case of any construction activities during restricted hours, it is the Contractor’s responsibility to ensure compliance with the NCO and the relevant TMs. The Contractor will be required to submit a CNP application to the Noise Control Authority and abide by any conditions stated in the CNP.

Operational Phase

Road Traffic Noise

9.2.11 The EIAO Guidance Note on Preparation of Road Traffic Noise Impact Assessment under the Environmental Impact Assessment Ordinance (GN 12/2023) provides general reference for practitioners to prepare Road Traffic Noise Impact Assessment (RTNIA) for DPs under the EIAO.

9.2.12 The EIAO-TM published under Section 16(5) of the EIAO is the fundamental legislation of noise criteria for evaluating noise impact of designated projects with respect to road traffic noise. The summary of noise criteria is given in Table 9.2 below.

Table 9.2: Relevant Road Traffic Noise Standards for Planning Purposes

Noise Sensitive Receiver	Road Traffic Noise Peak Hour Traffic L_{10 (1hour)}, dB(A)
● All domestic premises including temporary housing accommodation ● Hotel and hostels ● Offices	70
● Educational institutions including kindergartens, nurseries and all others where unaided voice communication is required ● Places of public worship and courts of law	65
● Hospitals, clinics, convalescences and homes for the aged, diagnostic rooms, wards	55

Source: EIAO-TM, Annex 5, Table 1A - Noise Standards for Planning Purposes

Notes:

(i) The above standards, or equivalent, apply to uses which rely on opened windows for ventilation and are assessed at 1m from the external façade.

Fixed Noise Sources

9.2.13 The EIAO Guidance Note on Preparation of Fixed Noise Sources Impact Assessment Under the Environmental Impact Assessment Ordinance (GN 16/2023) provides some good practices to the practitioners on the preparation of Fixed Noise Sources Impact Assessment (FNIA) of DPs under the EIAO.

9.2.14 The Acceptable Noise Levels (ANLs) for the Noise Sensitive Receivers (NSRs) are determined with consideration of the Area Sensitivity Rating (ASR) which is defined in the Technical Memorandum for the Assessment of Noise from Places other than Domestic Premises, Public Places or Construction Sites (IND-TM) issued under the NCO.

9.2.15 The ASR depends on the type of area and the degree of impact that Influencing Factors (IFs) have on the NSRs as illustrated in Table 9.3 below. Industrial area, major road or the area within the boundary of Hong Kong International Airport shall be considered to be an IF. Regardless of the ASR adopted in the fixed noise sources impact assessment, the Noise Control Authority will assess the fixed noise sources and/ or take enforcement action, if necessary, based on the NCO, the relevant TMs and the contemporary conditions/ situations.

9.2.16 Any NSR shall be assigned as ASR of “C” if it is within 100m of a zone designated as “Industrial” or “Industrial Estate” on a statutory OZP, or an ASR “B” if it is between 100 m and 250 m from such a zone, except in cases where Table 9.3 indicated an ASR of “C”.

Table 9.3: Area Sensitivity Ratings

Type of Area Containing NSR	Degree to which NSR is affected by IF
Type of Area Containing NSR	Not Affected^(c)	Indirectly Affected^(d)	Directly Affected^(e)
i. Rural area, including country parks^(a) or village type developments	A	B	B
ii. Low density residential area consisting of low rise or isolated high-rise developments	A	B	C
iii. Urban area^(b)	B	C	C
iv. Area other than those above	B	B	C

Source: IND-TM, Table 1 - Area Sensitivity Ratings (ASRs)

Definitions:

(a) “Country park” means an area that is designated as a country park pursuant to section 14 of the Country Parks Ordinance.

(b) “Urban area” means an area of high density, diverse development including a mixture of such elements as industrial activities, major trade or commercial activities and residential premises.

(d) “Indirectly Affected” means that the NSR is at such a location that noise generated by the IF, whilst noticeable at the NSR, is not a dominant feature of the noise climate of the NSR.

(e) “Directly Affected” means that the NSR is at such a location that noise generated by the IF is readily noticeable at the NSR and is a dominant feature of the noise climate of the NSR.

9.2.17 Noise from existing fixed sources is controlled under the NCO and shall comply with the ANLs laid down in the Table 2 of the IND-TM. For a given ASR, the ANL in dB(A) is given in Table 9.4 below.

Table 9.4: Acceptable Noise Level for Fixed Noise Sources

Noise Sensitive Receiver	Area Sensitivity Rating
Noise Sensitive Receiver	A	B	C
Day (0700 to 1900 hours)	60	65	70
Evening (1900 to 2300 hours)	60	65	70
Night (2300 to 0700 hours)	50	55	60

Source: IND-TM, Table 2 - Acceptable Noise Levels (ANLs)

Notes:

(i) The above noise standards apply to uses which rely on opened windows for ventilation.

(ii) The above standards shall be viewed as the maximum permissible noise levels assessed at 1m from the external façade.

Noise Criteria for Planned Fixed Noise Sources

9.2.18 As stipulated in Annex 5 of the EIAO-TM, the noise standards for planning fixed noise source are (a) 5 dB(A) below the appropriate ANL as stipulated in the IND-TM, or (b) the prevailing background noise levels (for quiet area with level 5 dB(A) below the ANL).

9.3 Baseline Condition

Description of Prevailing Environment

9.3.1 The Project Site is comprised of the Nam Sang Wai (NSW) portion and Lut Chau (LC) portion. The Project Site is featured by soft landscape (e.g., ponds, reedbeds, mangroves, grassland and plantations) and surrounded by waterbodies. Yuen Long Industrial Estate (YLIE) and Yuen Long Road Safety Centre (YLRSC) are located to the west and southwest of the NSW portion of the Project Site but separated by the Shan Pui River and Kam Tin River, respectively. There are no major traffic roads near the Project Site.

9.3.2 According to the site visits in May 2022, June 2022, February 2023 and February 2024, no major noise sources were found inside the Project Site. Traffic flow from the adjacent Nam Sang Wai Road is low. Noise from the YLIE was perceived but not dominant at the Project Boundary, whereas no noticeable noise from the YLRSC was perceived. The prevailing noise environment of the Project Site is predominantly in rural area, with certain contribution from the YLIE.

9.4 Noise Sensitive Receivers

Identification of Noise Sensitive Receivers

9.4.1 With reference to Annex 13 of the EIAO-TM, the potential noise sensitive receivers (NSRs), including existing, committed, and planned, could be, but not limited to all domestic premises, temporary housing accommodation, hostels, convalescent homes, homes for the aged, educational institutions (including kindergartens and nurseries), places of public worship, courts of law, hospitals and medical clinics.

9.4.2 Representative NSRs within the Assessment Area have been identified with the first layer of NSRs selected for assessment. These NSRs cover all existing sensitive developments, committed and planned NSRs during construction and operational phases.

9.4.3 All existing, planned and committed NSRs within the Assessment Area have been identified based on the topographic maps supplemented by site surveys, Outline Zoning Plans (OZPs), plans and drawings published by Lands Department and other published plans in the vicinity of the Project Site. The overall representative NSRs are summarised in Table 9.5. The Planning Department had no comments on the planned and committed NSRs listed in Table 9.5. Their locations are shown in Figure 9.1, and photographs of the existing representative NSRs are included in Appendix 9.1.

9.4.4 The Visitor Centre under the Project will be provided with mechanical ventilation such that it will not rely on opened windows for ventilation. Therefore, it is not considered as NSR in this assessment.

9.4.5 Due to the proposed comprehensive development and wetland enhancement works of the Project, existing NSRs (e.g., village/ stilt houses) within the Project Boundary will be removed. Therefore, they are not identified as NSRs in this assessment.

9.4.6 Representative NSRs and Noise Assessment Points (NAPs) to represent the identified NSRs are selected for carrying out construction and operational (i.e., road traffic noise and fixed noise sources) impact assessments and presented in the following sections.

Table 9.5: Overall Representative Noise Sensitive Receivers (NSRs)

NSR ID ^[1]	Locations / Descriptions	Existing / Planned	Uses ^[2]	No. of Storeys (Sensitive Use Only)
Non-Project NSRs (outside Project Site)
E01	Chung Hau Yu Man San Tsuen	Existing	R	1-2
E02	Stilt Houses	Existing	R	1-2
E03	Village Houses and Stilt Houses	Existing	R	1-3
E04	Shan Pui Chung Hau Tsuen	Existing	R	1-2
E05	Village Houses	Existing	R	1-2
E06	HK School of Motoring Yuen Long Road Safety Centre	Existing	E	1
E07	Village Zone from Nam Sang Wai OZP (S/YL-NSW/8)	Existing	R	1-3
F01	Private Housing Development at D.D. 115 at Chung Yip Road, Nam Sang Wai	Planned	R	3
Project NSRs (within Project Site)
P01-R	Phase 1 of Residential Development ^[3]	Planned	R	3, 23-25
P02-R	Phase 2 of Residential Development ^[3]	Planned	R	3, 20-25
P03-R	Phase 3 of Residential Development ^[3]	Planned	R	3, 19-22
P01-EC	Elderly Centre under Phase 1	Planned	HE	6

Notes:

[1] The above noise sensitive receivers rely on opened windows for ventilation.

[2] R – Residential Premises; E – Educational Institutions; HE – Homes for the elderly

[3] The residential development consists of both low-rise and high-rise buildings.

9.5 Construction Noise Impact Assessment

Identification of Noise Sources

9.5.1 Potential construction noise impacts would arise from the use of powered mechanical equipment (PME) during the construction works of the Project. The construction phasing area and work zones are illustrated in Figure 2.8. The Project can be mainly separated into three major parts:

● Visitor Centre and Public Park

● Pond / Wetland Enhancement

● Residential Development

Visitor Centre and Public Park

9.5.2 Construction works and improvement works will be carried out for the 2-storey high visitor centre and the public park, respectively. The construction and improvement work for the visitor centre and the public park have been included in this assessment.

Pond / Wetland Enhancement

9.5.3 Restoring works would be carried out at the pond/ wetland enhancement area with a total area of about 154.4 hectares. Machinery would be involved in the enhancement works. Given that the works area is large, the aforementioned works have been included in this assessment.

Residential Development

9.5.4 Construction works will be carried out in the Development Site. The key activities of the residential development during the construction phase are typical of other residential development projects, which include site clearance, site formation, piling works, pipe works, utility works, and road improvement works. These activities are expected to be the major noise sources during construction. Hence, the aforementioned works have been included in this assessment.

Assessment Area

9.5.5 The Assessment Area for the construction noise impact assessment is 300 metres from the Project Boundary. Details of the Assessment Area can be referred from Figure 9.2.

Identification of Representative Noise Sensitive Receivers

9.5.6 The first layer of NSRs located close to the construction activities have been selected from Table 9.5. Noise assessment points (NAPs) closest to the construction activities have been assigned for construction noise impact assessment and summarised in Table 9.6. Locations are shown in Figure 9.2.

9.5.7 Given that the population intake of Phase 3 will be after all the major construction works, NSRs at Phase 3 will not be affected by any construction activities under the Project and thus not considered as the representative NSRs.

Table 9.6: Representative NSRs and NAPs for Construction Noise Impact Assessment

ID ^[1]	NAP ID	Locations / Descriptions	Uses ^[2]	Noise Criteria, Leq 30mins, dB(A)
Existing / Planned NSRs (outside Project Site)
E01	E01_CN01	Chung Hau Yu Man San Tsuen	R	75
E02	E02_CN01	Stilt Houses	R	75
E03	E03_CN01	Village Houses and Stilt Houses	R	75
E05	E05_CN01	Village House	R	75
E05	E05_CN02	Village House	R	75
E05	E05_CN03	Village House	R	75
E05	E05_CN04	Village House	R	75
E05	E05_CN05	Village House	R	75
E05	E05_CN06	Village House	R	75
E06	E06_CN01	HK School of Motoring Yuen Long Road Safety Centre	E^[3]	70
E07	E07_CN01	Village Zone from Nam Sang Wai OZP (S/YL-NSW/8)	R	75
Planned NSRs (within Project Site)
P01-R	P01-R_CN01	Phase 1 of Residential Development	R	75
	P01-R_CN02	Phase 1 of Residential Development	R	75
	P01-R_CN03	Phase 1 of Residential Development	R	75
	P01-R_CN04	Phase 1 of Residential Development	R	75
	P01-R_CN05	Phase 1 of Residential Development	R	75
P02-R	P02-R_CN01	Phase 2 of Residential Development	R	75
	P02-R_CN02	Phase 2 of Residential Development	R	75
	P02-R_CN03	Phase 2 of Residential Development	R	75
	P02-R_CN04	Phase 2 of Residential Development	R	75
P01-EC	P01-EC_CN01	Elderly Centre under Phase 1	HE	75

Notes:

[1] The above noise standards apply to uses which rely on opened windows for ventilation.

[2] R – Residential Premises; E – Educational Institutions; HE – Homes for the elderly

[3] Given that no paper exam will be hosted in the HK School of Motoring Yuen Long Road Safety Centre, 70dB(A) will be adopted as the noise criteria.

Cumulative Impact from Concurrent Project

9.5.8 Based on the tentative construction programme, the earliest start year of the Project construction works would be in 2025. The construction of the Project could be carried out concurrently with the following project that may induce cumulative construction noise impacts. Details of the following concurrent projects are provided in Section 2.9 and their locations are shown in Figure 2.9.

1. Yuen Long Barrage Scheme (AEIAR-228/2021)

2. Yuen Long Effluent Polishing Plant (AEIAR-220/2019)

3. Improvement of Yuen Long Town Nullah (Town Centre Section) (AEIAR-223/2020)

4. Proposed Private Residential Development in D.D.115 at Chung Yip Road, Nam Sang Wai, Yuen Long (Approved Planning Application No. A/YL-NSW/282)

5. Agreement No. CE 3/2016(CE) Study on Proposed Multi-storey Buildings in Yuen Long Area for Brownfield Operations - Feasibility Study

6. Proposed Public Housing Development in Sha Po

7. Proposed Development under LSPS Application No. LSPS/002

8. Proposed Residential and Community Hub Development in Tung Shing Lei (Approved Planning Application No. A/YL-NSW/274)

9. Northern Metropolis Highway

10.Sam Po Shue Wetland Conservation Park

9.5.9 Potential cumulative construction noise impact is described in the following paragraph.

Yuen Long Barrage Scheme (YLBS)

9.5.10 Based on the latest information, the construction works of YLBS started in May 2023 and would be completed in 2030. According to the approved EIA Report of YLBS, common representative NSR (i.e., NSR at E02_CN01 under this Project; TSSP1 under YLBS) was observed in the construction noise impact assessment under this Project and YLBS. The mitigated noise level at TSSP1 (i.e., maximum 68 dB(A)) has been included in the construction noise impact assessment. As a conservative approach, the noise level of 68 dB(A) is adopted for each representative NSR under this Project (i.e., without noise attenuation correction for NSRs further away).

Yuen Long Effluent Polishing Plant (YLEPP)

9.5.11 Based on the latest information, the construction works of YLEPP was started in November 2022 and would be completed in 2026/ 2027. According to the approved EIA Report of YLEPP, representative NSRs (e.g., NSR 3 under YLEPP) was identified inside the Project Site. However, all NSRs within the Project Site (i.e. including NSR 3 under YLEPP) will be removed once the Project is under construction. Other identified NSRs under YLEPP are outside the Project Site and located beyond 300 metres of the Project Boundary. Based on the above, no common representative NSR was observed in the construction noise impact assessment under this Project and YLEPP. In addition, no adverse noise impact is anticipated from the construction of YLEPP was concluded in the said EIA Report. Thus, no unacceptable cumulative noise impact is anticipated.

Improvement of Yuen Long Town Nullah (YLTN) (Town Centre Section)

9.5.12 Based on the latest information, the construction works of YLTN (Town Centre Section) started in May 2023 and would be completed in 2030. According to the approved EIA Report of the Improvement of YLTN (Town Centre Section), only construction areas Section B1 / B2 / B3 would be under construction during the period overlapping with the Project construction works. The Section B1 / B2 / B3 would be located 300m away from the representative NSRs. Considering the sufficient buffer distance, no adverse noise impact is anticipated from the construction noise of YLTN. Thus, no unacceptable cumulative noise impact is anticipated.

Proposed Private Residential Development in D.D.115 at Chung Yip Road, Nam Sang Wai, Yuen Long (Approved Planning Application No. A/YL-NSW/282)

9.5.13 According to the Gist of the approved planning application of the captioned project, the development intentions are for low-rise and low-density residential developments (i.e., not a large-scale infrastructure project nor a high-rise building development). Based on current good practices on mitigating construction noise, no insurmountable construction noise impact from the captioned project is anticipated.

9.5.14 The Lands Department announced on 17 August 2021 the land tender award of the site. However, there is no publicly available information on the construction and occupation programme for this development. Nevertheless, the cumulative impact from the captioned project shall be reviewed in the later Construction Noise Management Plan (CNMP) stage.

Agreement No. CE 3/2016(CE) Study on Proposed Multi-storey Buildings in Yuen Long Area for Brownfield Operations - Feasibility Study

9.5.15 This study was commissioned by the Civil Engineering and Development Department (CEDD) in mid-2016 to evaluate and establish the feasibility of developing the proposed multi-storey building (MSB) at a site in the vicinity of Yuen Long Industrial Estate to accommodate brownfield operations. Based on the latest information, the construction works of Yuen Long MSB would start in 2024 and be completed in 2028/ 2029. The Project Site is located beyond the 300 metres of our Project Boundary. Considering the sufficient separation distance, no adverse noise impact is anticipated from the construction noise, and there is no unacceptable cumulative noise impact expected.

Proposed Public Housing Development in Sha Po

9.5.16 Based on the Preliminary Environmental Review (PER) of Agreement No. CE 10/2020 (CE) for Site Formation and Infrastructure Works planned for proposed public housing developments at Sha Po, Shap Pat Heung, and Tai Kei Leng in Yuen Long, it has been determined that percussive piling works will not be involved in the construction sites/ activities. Based on the latest information, the construction works of the Proposed Public Housing Development in Sha Po would start in Q3 2025 and be completed in 2031. The PER also indicates that potential construction noise impacts are manageable, provided that effective and practicable mitigation measures and good site practices are implemented. Together with their Project Site being out of the 300 metres of our Project Boundary (e.g., sufficient separation distance), no adverse noise impact is anticipated from the construction noise, and there is no unacceptable cumulative noise impact expected.

Proposed Development under LSPS Application No. LSPS/002

9.5.17 Based on the Gist of LSPS Application No. LSPS/002, the development involves the construction of 9 composite blocks, with a maximum building height ranging from 24 to 26 storeys. Based on the latest information, the construction works of the Proposed Development under LSPS was started in 2023 and would be completed in 2026. The public housing portion of the development is closer to our Project Boundary compared to its private housing portion but still has a minimum distance of around 500 metres. Considering the sufficient separation distance, no adverse noise impact is anticipated from the captioned project, and there is no unacceptable cumulative noise impact expected.

Proposed Residential and Community Hub Development in Tung Shing Lei (Approved Planning Application No. A/YL-NSW/274)

9.5.18 According to the Gist of the approved planning application for the project with reference A/YL-NSW/274, the development comprises of 8 domestic blocks with 8 to 21 storeys and 3 non-domestic blocks with 3 to 4 storeys, providing 1,518 flats for residential use. There is no publicly available information on the construction and occupation programme for the captioned development. Nevertheless, the Project Site is located beyond the 300 metres of our Project Boundary. Considering the sufficient buffer distance, no adverse noise impact is anticipated from the construction noise, and there is no unacceptable cumulative noise impact expected.

Northern Metropolis Highway

9.5.19 The 23-km Northern Metropolis Highway comprises of four main road sections, with the proposed alignment for the Tin Shui Wai Section (from Tin Shui Wai to Kam Tin) initially anticipated to intersect the NSW WEA. No construction and operation details are available on this project at this stage, while the alignment is subject to the findings of an Investigation Study to be carried out. Given that this project will be required to carry out an EIA, potential cumulative noise impacts for the proposed alignment should be addressed under that EIA study.

Sam Po Shue Wetland Conservation Park

9.5.20 The Sam Po Shue Wetland Conservation Park is part of the San Tin / Lok Ma Chau Development Node under the approved EIA (AEIAR-261/2024) and is a planned wetland conservation area with wetland and fishpond enhancement. The Project Site is located beyond the 300 metres of our Project Boundary. Considering the sufficient buffer distance, no adverse noise impact is anticipated from the construction noise, and there is no unacceptable cumulative noise impact expected.

Assessment Methodology

9.5.21 The assessment of construction noise impacts arising from works other than percussive piling was based on standard acoustic principles and guidelines given in the GW-TM issued under the NCO where appropriate. The plant inventory has been reviewed and confirmed by the Design Engineer. In addition, the sound power levels (SWLs) of the PME were referenced to those listed in Table 3 of GW-TM. Where SWL was not available in the GW-TM, reference has been made to the following sources of information.

● Typically, available Quality Powered Mechanical Equipment (“QPME”) with valid QPME Labels maintained and listed in EPD’s website

● Sound power levels of other commonly used PME in EPD’s website

● Other approved EIA reports or measurements taken in other relevant studies

9.5.22 The approach adopted is considered by Design Engineer to be practicable and summarised as follows:

i. Formulate a typical construction schedule/ programme;

ii. Identify a typical project-specific equipment inventory for each work stage together with the number;

iii. Obtain from GW-TM, the Sound Power Level (SWL) for each PME assumed in the equipment inventory;

iv. Select representative NSRs for the construction noise impact assessment;

v. Calculate the unmitigated Predicted Noise Level (PNL) and correct it for façade reflection to obtain the Corrected Noise Level (CNL) at any NSRs;

vi. If necessary, re-select typical project-specific silenced equipment and calculate the mitigated noise impact;

vii. Compare the mitigated CNL with the noise standards to determine acceptability and the need for further mitigation;

9.5.23 The noise levels were assessed based on the standard acoustics formula as follows -

SPL = SWL – DC + FC

Where:

SPL Sound Pressure Levels at receiver, in dB(A)

SWL Sound Power Levels of Fixed Noise Sources, in dB(A)

DC Distance Correction, in dB(A) by DC = 20log10(D) + 8

D Horizontal distance between the NSR and source in meters

FC Façade Correction of +3 dB(A)

Prediction and Evaluation of Construction Noise Impacts (Unmitigated Scenario)

9.5.24 The unmitigated construction noise levels at representative NSRs were predicted and summarised in Table 9.7 with detailed results presented in Appendix 9.2. There would be exceedances predicted at the majority of representative NSRs. Mitigation measures are therefore required.

Table 9.7: Predicted Unmitigated Construction Noise Impact at Representative NSRs

ID ^[1]	NAP ID	Uses ^[2]	Noise Criteria, Leq 30mins, dB(A)	Predicted Noise Level, Leq 30mins, dB(A) ^{[3] [5]}	Noise Exceedance? [Y/N]
Existing / Planned NSRs (outside Project Site)
E01	E01_CN01	R	75	81	Y
E02	E02_CN01	R	75	82	Y
E03	E03_CN01	R	75	78	Y
E05	E05_CN01	R	75	71	N
E05	E05_CN02	R	75	71	N
E05	E05_CN03	R	75	71	N
E05	E05_CN04	R	75	76	Y
E05	E05_CN05	R	75	74	N
E05	E05_CN06	R	75	76	Y
E06	E06_CN01	E	70^[4]	77	Y
E07	E07_CN01	R	75	73	N
Planned NSRs (within Project Site)
P01-R	P01-R_CN01	R	75	82	Y
	P01-R_CN02	R	75	86	Y
	P01-R_CN03	R	75	83	Y
	P01-R_CN04	R	75	83	Y
	P01-R_CN05	R	75	82	Y
P02-R	P02-R_CN01	R	75	79	Y
	P02-R_CN02	R	75	81	Y
	P02-R_CN03	R	75	85	Y
	P02-R_CN04	R	75	85	Y
P01-EC	P01-EC_CN01	HE	75	74	N

Notes:

[1] The above noise standards apply to uses which rely on opened windows for ventilation.

[2] R – Residential Premises; E – Educational Institutions; HE – Homes for the elderly

[3] Bolded values mean exceedance of the relevant noise criteria.

[4] Given that no paper exam will be hosted in the HK School of Motoring Yuen Long Road Safety Centre, 70dB(A) will be adopted as the noise criteria.

[5] Shortest horizontal distances between NAPs to the noise sources have been adopted for the assessment as a conservative approach. Therefore, the predicted noise levels calculated based on these shortest horizontal distances can represent noise levels at various floor levels for different NAPs.

Mitigation Measures

9.5.25 As mentioned, the construction works at the Development Site, visitor centre and public park, and pond/ wetland enhancement are considered as the noise sources in the construction noise impact assessment. In order to minimise the impact, the following mitigation measures have been proposed:

● Adoption of good site practices to limit noise emissions at the sources;

● Use of quiet construction method / quality powered mechanical equipment (QPME); and

● Use of at-source mitigation measures (e.g., movable noise barrier) to screen noise from construction plant.

9.5.26 The above mitigation measures would need to be implemented in works sites as good practices where appropriate. The relevant suggested contractual clauses as stipulated in ProPECC PN 1/24 shall be adopted as appropriate in construction contracts.

Good Site Practice

9.5.27 Although the noise mitigation effects are not easily quantifiable and the benefits may vary with site conditions and operating conditions, good site practices should be implemented to minimise impacts. The site practices listed below should be followed during the construction phase:

● Only well-maintained plant should be operated on-site, and plant should be serviced regularly during construction;

● Silencers or mufflers on construction equipment should be utilised and should be properly maintained during construction;

● Mobile plant, if any, should be sited as far from NSRs as possible;

● Machines and plant (such as trucks) that may be in intermittent use should be shut down between work periods or should be throttled down to a minimum;

● The engine of lorries should be switched off after arriving to the unloading position;

● Plant known to emit noise strongly in one direction should, wherever possible, be orientated so that the noise is directed away from nearby NSRs;

● Material stockpiles should be effectively utilized, wherever practicable, in screening noise from on-site construction activities.

9.5.28 In addition, the “Recommended Pollution Control Clauses for Construction Contracts” published by the EPD should be adopted in the Contract Specification for the Contractor to follow and implement relevant measures and good site practices in minimising noise impact.

Quiet Construction Method / Quality Powered Mechanical Equipment (QPME)

Quiet Construction Method

9.5.29 Instead of traditional construction method, the following quieter construction methods were proposed for the mitigated scenario and summarised in Table 9.8. The quiet construction method adopted in this assessment is for reference only. The Contractor may adopt alternative quiet construction method which can be demonstrated that they would not result in construction noise impacts worse than those predicted in this assessment.

a. Hydraulic Crusher for Concrete Breaking / Demolition Works

9.5.30 Handheld or excavator mounted concrete breaker is a traditional mechanical equipment for concrete breaking and removal. The operation principle of the traditional handheld or excavator mounted concrete breaker is by percussive striking actions of its chisels which will generate loud noise. Therefore, it is recommended to use a hydraulic concrete crusher to replace the handheld or excavator mounted concrete breaker for demolition works. According to EPD’s web page, the sound pressure level (SPL) of the hydraulic crusher is 67-69 dB(A) at 7m from equipment, i.e., 92-94dB(A) Sound Power Level (SWL). Hence, 94 dB(A) SWL has been adopted in this assessment as a conservative approach. This method is considered by Design Engineers to be feasible in actual situation and practicable in the context of construction programme.

b. Quieter Type or Rubber Head Poker Vibrator

9.5.31 Traditional vibratory poker is used to vibrate wet concrete to remove air bubbles that then provide consistency and strength to the concrete. However, the vibratory poker would inevitably generate significant noise impact to the NSRs nearby. Therefore, it is recommended to use of quieter type or rubber head poker vibrator to replace the traditional vibratory poker. According to relevant EPD web page, the SPL of quieter type or rubber head poker vibrator is about 77dB(A) at 7m from equipment. Hence, 102 dB(A) SWL has been adopted in this assessment. This method is considered by Design Engineers to be feasible in actual situations and practicable in the context of construction programmes.

Table 9.8: Quieter Construction Method adopted as Construction Noise Mitigation Measure

Process	Conventional Practices	Alternative Quieter Construction Methods / Equipment
Building / structure demolition	Excavator mounted breaker	Use of hydraulic crusher
Road works (concrete structure demolition/ trench opening)	Excavator mounted breaker	Use of hydraulic crusher
Road works (concrete compacting)	Vibratory poker -	Rubber head poker vibrator

Quality Powered Mechanical Equipment (QPME)

9.5.32 To reduce the noise impacts at the affected NSRs during normal daytime / evening periods, mitigation measures such as the use of QPME is recommended. The types of QPME adopted in this assessment are for reference only. The Contractor may adopt alternative QPME which can demonstrate that they would not result in construction noise impacts worse than those predicted in this assessment.

9.5.33 For the use of QPME associated with the construction works, reference was made to the QPME list available on the EPD’s website, which provides the SWLs for specific QPME and specification published by equipment manufacturer. The items of QPME and the associated SWLs adopted for the assessment are listed in Table 9.9. The Design Engineer has confirmed that the proposed QPMEs are viable to replace the original PMEs to complete the construction works within the intended construction programme.

Table 9.9: SWL of QPME adopted as Construction Noise Mitigation Measure

QPME	QPME Reference No.	Brand	Model Number	SWL, dB(A)
Excavator, wheeled/tracked	EPD-12299	KOBELCO	SK135SR-2	92
Roller, vibratory	EPD-09071	Dynapac	CC1300	105
Bulldozer, tracked	EPD-12694	KOMATSU	D65EX-16	108
Generator	EPD-12349	DENYO CO LTD / DENYO	DCA-60LSIE	90
Hand-held Percussive Breaker	EPD-14413	Hilti	TE 1000-AVR	99
Crane, mobile	EPD-12240	Kobelco	CKS900	101
Air Compressor	EPD-12304	AIRMAN	PDS390S-5C1	98
Road roller	EPD-13135	HITACHI	CP220-3	97

Use of At-Source Mitigation Measures

9.5.34 Use of movable noise barriers at the PMEs are recommended. The barriers will be placed as close to the PME as possible and at a location intercepting the line of sight between the NSRs and PME. They should have a minimum surface density of 10 kg/m² and be moved concurrently with the PME along the worksites. A cantilevered top cover would be used for noise screening for upper floors of NSRs to achieve screening benefits. According to the EIAO Guidance Note (GN) on Preparation of Construction Noise Impact Assessment GN No. 9/2023, noise reduction of 5 dB(A) and 10 dB(A) can be achieved by direct application of the noise barriers to movable and stationary plant, respectively. To maximize the effectiveness, the noise barriers should be sufficiently long (e.g., at least 5 times longer than its height) or be bent around the noise sources, have no gaps/ openings at joints in the barrier materials, and be fitted with sound absorptive materials where necessary to avoid reflections.

9.5.35 The Contractor should be responsible for the design of the noise barrier with due consideration given to the size of the PME and the requirement of intercepting the line of sight between the NSRs and PME.

Prediction and Evaluation of Construction Noise Impacts (Mitigated Scenario)

9.5.36 The mitigated construction noise levels at representative NSRs were predicted and summarised in Table 9.10 with detailed results presented in Appendix 9.2.

Table 9.10: Predicted Mitigated Construction Noise Impact at Representative NSRs

ID^[1]	NAP ID	Uses ^[2]	Noise Criteria, Leq 30mins, dB(A)	Predicted Noise Level, Leq 30mins, dB(A) ^{[3] [5]}	Noise Exceedance? [Y/N]
Existing / Planned NSRs (outside Project Site)
E01	E01_CN01	R	75	71	N
E02	E02_CN01	R	75	71	N
E03	E03_CN01	R	75	70	N
E05	E05_CN01	R	75	68	N
E05	E05_CN02	R	75	68	N
E05	E05_CN03	R	75	68	N
E05	E05_CN04	R	75	69	N
E05	E05_CN05	R	75	68	N
E05	E05_CN06	R	75	69	N
E06	E06_CN01	E	70^[4]	70	N
E07	E07_CN01	R	75	69	N
Planned NSRs (within Project Site)
P01-R	P01-R_CN01	R	75	71	N
	P01-R_CN02	R	75	75	N
	P01-R_CN03	R	75	72	N
	P01-R_CN04	R	75	73	N
	P01-R_CN05	R	75	72	N
P02-R	P02-R_CN01	R	75	68	N
	P02-R_CN02	R	75	71	N
	P02-R_CN03	R	75	74	N
	P02-R_CN04	R	75	74	N
P01-EC	P01-EC_CN01	HE	75	68	N

Notes:

[1] The above noise standards apply to uses which rely on opened windows for ventilation.

[2] R – Residential Premises; E – Educational Institutions; HE – Homes for the elderly

[3] Bolded values mean exceedance of the relevant noise criteria.

[4] Given that no paper exam will be hosted in the HK School of Motoring Yuen Long Road Safety Centre, 70dB(A) will be adopted as the noise criteria.

Evaluation of Residual Noise Impact

9.5.37 With the implementation of the mitigation measures as mentioned previously, no adverse construction noise impact from the construction works of the Development Site is anticipated. Therefore, an unacceptable residual impact is not anticipated.

Conclusion

9.5.38 A construction noise impact assessment has been undertaken to predict the noise levels at the representative NSRs due to the construction of the Project. Practicable mitigation measures, including good construction site practices, use of quiet construction method / Quality Powered Mechanical Equipment and movable noise barriers, have been recommended. With the implementation of the recommended mitigation measures, the predicted construction noise levels at all NSRs comply with the noise criteria during the daytime period. Therefore, no unacceptable noise impact, as well as cumulative impact, is expected to arise from the construction activities. Also, no residual impact is anticipated.

9.5.39 Construction Noise Management Plan (CNMP) shall be submitted to EPD for approval before tender stage and before commencement of construction works of the Project (including the proposed bridge). The CNMP shall review the construction noise impact with the updated construction programme and provide sufficient mitigation measures, where necessary.

9.6 Road Traffic Noise Impact Assessment

Identification of Noise Sources

9.6.1 Potential road traffic noise impact will arise from the following operations:

● Road Traffic Noise to the Proposed Project Development (Project NSRs)

● Road Traffic Noise from the Planned Project Road to surrounding (Non-Project NSRs)

9.6.2 Noise sensitive façades will be impacted by road traffic noise from surrounding roads. Wang Lok Street, other existing roads and the proposed bridge (i.e., planned project road) are potential sources of the road traffic noise impact. All Project and non-Project NSRs would have a potential of being impacted by the nearby road networks and the associated impacts have been assessed quantitatively below.

Assessment Area

9.6.3 As mentioned, the proposed residential development and the elderly centre are the NSRs, whereas the proposed bridge would be the potential noise sources from the Project, in the traffic noise impact assessment. Therefore, the Assessment Area for road traffic noise impact is 300m from the boundary of the proposed residential development, elderly centre, and proposed bridge of the Project.

9.6.4 It is noted that the detailed design and alignment of the proposed bridge are not available at this stage. The Traffic Noise Management Plan (TNMP) shall review the road traffic noise impacts and proposed mitigation measures, where necessary, prior to its submission.

Identification of Representative Noise Sensitive Receivers

9.6.5 The first layer of NSRs located close to the traffic roads have been selected from Table 9.5. Noise assessment points (NAPs) closest to the roads have been assigned for traffic noise impact assessment and summarised in Table 9.11. Locations are shown in Figure 9.4.

Table 9.11: Representative NSRs and NAPs for Traffic Noise Impact Assessment

ID^[1]	NAP ID	Locations / Descriptions	Uses ^[2]	Noise Criteria, L_10(1hr), dB(A)
Non-Project NSRs (outside Project Site)
E02	E02_TN01	Stilt Houses	R	70
E04	E04_TN01	Shan Pui Chung Hau Tsuen	R	70
E06	E06_TN01	HK School of Motoring Yuen Long Road Safety Centre	E	65
F01	F01_TN01	Private Housing Development at D.D. 115 at Chung Yip Road, Nam Sang Wai	R	70
Project NSRs (within Project Site)
P01-R	P01-R_TN01	Phase 1 of Residential Development	R	70
	P01-R_TN02	Phase 1 of Residential Development	R	70
	P01-R_TN03	Phase 1 of Residential Development	R	70
P02-R	P02-R_TN01	Phase 2 of Residential Development	R	70
P02-R	P02-R_TN02	Phase 2 of Residential Development	R	70
P03-R	P03-R_TN01	Phase 3 of Residential Development	R	70
	P03-R_TN02	Phase 3 of Residential Development	R	70
	P03-R_TN03	Phase 3 of Residential Development	R	70
	P03-R_TN04	Phase 3 of Residential Development	R	70
P01-EC	P01-EC_TN01	Elderly Centre under Phase 1	HE	70
	P01-EC_TN02	Elderly Centre under Phase 1	HE	70
	P01-EC_TN03	Elderly Centre under Phase 1	HE	70
	P01-EC_TN04	Elderly Centre under Phase 1	HE	70
	P01-EC_TN05	Elderly Centre under Phase 1	HE	70
	P01-EC_TN06	Elderly Centre under Phase 1	HE	70
	P01-EC_TN07	Elderly Centre under Phase 1	HE	70

Notes:

[1] The above noise standards apply to uses which rely on opened windows for ventilation.

[2] R – Residential Premises; E – Educational Institutions; HE – Homes for the elderly

Assessment Methodology

9.6.6 The peak hour road traffic noise levels will be predicted using the “RoadNoise” model, which has been used before in other similar EIA studies. The model has fully incorporated the procedures and methodology documented in “Calculation of Road Traffic Noise” (CRTN) published by the U.K. Department of Transport.

9.6.7 Noise Assessment Points (NAPs) of the representative NSRs, relevant topographical contours / building structures with noise screening effect or opposite façade effect, and road segments with traffic flow data will be input into the traffic noise model for evaluating the potential traffic noise impacts. Traffic data includes traffic flow, percentage of heavy vehicles and speeds. Façade correction will be included in each NAPs.

9.6.8 Based on the current tentative construction programme, the years of population intake for the proposed residential development are listed as follows:

● Phase 1 – Year 2030

● Phase 2 – Year 2033

● Phase 3 – Year 2036

9.6.9 The assessment year adopted in the assessment would be determined based on the maximum traffic projection within 15 years upon occupation of the residential development (i.e., Phase 3 - Year 2036). According to the information provided from the Project Traffic Engineer, the year with maximum traffic flow within a 15-year period upon operation of the Project is determined to be Year 2051. Hence, the traffic data for Year 2051 will be adopted for the assessment. Details of traffic data are provided in Appendix 9.3. The Transport Department (TD) has no objection in principle to adopting the traffic forecast methodology and the Project Traffic Engineer confirmed the traffic forecast provided for the preparation of the EIA was derived strictly following the methodology approved by the TD. The endorsement letter from TD and the certification letter from the Project Traffic Engineer are attached in Appendix 9.3.

9.6.10 In order to avoid the traffic noise level being underestimated due to the barrier effect from the phasing issues, the barrier effect from the proposed residential buildings (except the elderly centre under Phase 1) will not be considered into the noise model as a conservative approach. Computer plot for the “With the Project” scenario is shown in Appendix 9.4.

9.6.11 All the existing and planned public roads have been included in the assessment. The latest proposed bridge alignment has also been included in the noise assessment. The road networks are classified into the following categories for the purpose of the road traffic noise impact assessment, as shown in Figure 9.3:

● Project Road – Proposed Bridge connected to the YLIE and Project Site

● Other Roads – Existing public roads, and planned public roads if any, (committed under other projects) within 300m of the Assessment Area.

9.6.12 The overall traffic noise levels (i.e., including both Project Road and other roads) at the representative NSRs will be assessed. If noise exceedances were found, further traffic noise impact assessment for the Project Road will be conducted to investigate the provisions of direct or/ and indirect mitigation measures in accordance with the EIAO Guidance Note No. 12/2023.

Prediction and Evaluation of Road Traffic Noise Impacts (Unmitigated Scenario)

Unmitigated Scenario – Road Traffic Noise to the Proposed Project Development (Project NSRs)

9.6.13 The predicted traffic noise levels for representative project related NSRs are summarised in Table 9.12 and detailed in Appendix 9.5. Given that the predicted traffic noise levels (from both Project Road and Other Roads) do not exceed the noise criteria, no adverse traffic noise impact from the roads is anticipated.

Table 9.12: Predicted Unmitigated Peak Road Traffic Noise Impact at Representative Project NSRs

ID^[1]	NAP ID	Uses ^[2]	NAP Floor & Level (mPD)	Noise Criteria L_10(1hr), dB(A)	Predicted Noise level L_10(1hr), dB(A)	Noise Exceedance? [Y/N]	Mitigation Measures Required? [Y/N]
P01-R	P01-R_TN01	R	1/F (11.1mPD) to 25/F (87.9mPD)	70	62-63	N	N
	P01-R_TN02	R		70	64-67	N	N
	P01-R-TN03	R		70	63-66	N	N
P02-R	P02-R_TN01	R	1/F (11.1mPD) to 25/F (87.9mPD)	70	59-63	N	N
P02-R	P02-R_TN02	R	1/F (11.1mPD) to 25/F (87.9mPD)	70	61-64	N	N
P03-R	P03-R_TN01	R	1/F (11.1mPD) to 25/F (87.9mPD)	70	64-66	N	N
	P03-R_TN02	R		70	63-64	N	N
	P03-R_TN03	R		70	58	N	N
	P03-R_TN04	R		70	53-54	N	N
P01-EC	P01-EC_TN01	HE	G/F (6.8mPD) to 5/F (23.9mPD)	70	55	N	N
	P01-EC_TN02	HE		70	52-53	N	N
	P01-EC_TN03	HE		70	31-46	N	N
	P01-EC_TN04	HE		70	61	N ^[3]	N
	P01-EC_TN05	HE		70	63	N ^[3]	N
	P01-EC_TN06	HE		70	62	N ^[3]	N
	P01-EC_TN07	HE		70	61	N ^[3]	N

Notes:

[1] The above noise standards apply to uses which rely on opened windows for ventilation.

[2] R – Residential Premises; HE – Homes for the elderly

[3] Based on following restricted condition, no noise exceedance is considered –

For the uses of diagnostic rooms and wards in clinics, opened window for ventilation is not allowed to be located on the façades of noise levels higher than 55 dB(A).

9.6.14 As shown in Table 9.12, for the use of diagnostic rooms and wards in clinics, opened window is not allowed to be located on “façades of noise levels higher than 55 dB(A)” (i.e., from P01-EC_TN04 to P01-EC_TN07) as shown in Figure 9.4. Based on the above arrangement, no noise exceedance is anticipated at the elderly centre.

Unmitigated Scenario – Road Traffic Noise from the Planned Project Road to surrounding (Non-Project NSRs)

9.6.15 The predicted traffic noise levels for representative non-project NSRs are summarised in Table 9.13 and detailed in Appendix 9.5. Given that the predicted traffic noise levels (from both Project Road and Other Roads) do not exceed the noise criteria, no adverse traffic noise impact from the Project Road is anticipated.

Table 9.13: Predicted Unmitigated Peak Road Traffic Noise Impact at Representative Non-Project NSRs

ID^[1]	NAP ID	Uses ^[2]	NAP Floor & Level (mPD)	Noise Criteria L_10(1hr), dB(A)	Predicted Noise level L_10(1hr), dB(A)	Noise Exceedance? [Y/N]	Mitigation Measures Required? [Y/N]
E02	E02_TN01	R	1/F (5.7mPD) to 3/F (11.7mPD)	70	64	N	N
E04	E04_TN01	R	1/F (5.0mPD) to 3/F (11.0mPD)	70	68	N	N
E06	E06_TN01	E	1/F (5.2mPD) to 3/F (11.2mPD)	65	63	N	N
F01	F01_TN01	R	1/F (4.4mPD)	70	67	N	N

Notes:

[1] The above noise standards apply to uses which rely on opened windows for ventilation.

[2] R – Residential Premises; E – Educational Institutions

Mitigation Measures

9.6.16 No traffic noise exceedances were found, and hence no mitigation measures are required.

Conclusion

9.6.17 The potential road traffic noise impacts have been assessed based on the peak traffic flows in 2051. No traffic noise exceedances were found, and hence adverse traffic noise impact is not anticipated.

9.6.18 Traffic Noise Management Plan (TNMP) shall be submitted to EPD for approval before tender stage and before commencement of construction work of the Project. The TNMP should review the traffic noise impacts and provide sufficient mitigation measures, where necessary.

9.7 Fixed Noise Sources Impact Assessment

Identification of Noise Sources

9.7.1 Potential impact of fixed noise sources will arise from the following operations:

● Planned Fixed Noise Sources from the Project to surrounding NSRs

● Fixed Noise Sources to the Proposed Project Development

Planned Fixed Noise Sources from the Project to surrounding NSRs

Private Underground Sewage Pumping Station (SPS)

9.7.2 No non-Project NSRs are located within the 300m buffer from the proposed private underground SPS. Given that the proposed private underground SPS would be located underground as indicated in Appendix 9.6, the E&M equipment (e.g. sewage pumps and mechanically raked bar screens) would be fully enclosed.

E&M facilities in the Visitor Centre, Elderly Centre, Commercial Centre and Club Houses

9.7.3 E&M facilities in the Visitor Centre, Elderly Centre, Commercial Centre, and Club Houses (as indicated in Appendix 9.6) are the potential planned fixed noise sources under the Project. With reference to the MLP by the Project Architect, no chillers and cooling towers will be provided under this Project. Most of the E&M equipment, such as water pumps, drainage or/and sewage pumps, fire services pumps and transformer, will be installed inside the plant rooms.

9.7.4 Small, low powered split type air-conditioners will be installed at the Visitor Centre, Elderly Centre, Commercial Centre, and Club Houses. It is anticipated that the noise generated from the small and low powered split type air-conditioners are minimal.

Mitigation Measures for Planned Fixed Noise Sources

9.7.5 In order to ensure the aforesaid planned E&M equipment and split type air-conditioners would not cause excessive fixed noise sources impact to nearby NSRs, the following noise mitigation measures should be considered where necessary:

● The E&M equipment such as water pumps, drainage or/and sewage pumps, fire services pumps and transformer should be enclosed inside a building structure;

● Quiet plants should be properly selected to reduce the noise and tonality perceived at NSRs;

● Silencer / acoustic enclosure / acoustic louvre for the exhaust of ventilation system should be installed to minimize the noise emissions; and

● Openings of ventilation systems should be located away and oriented away from nearby NSRs as far as practicable.

9.7.6 The potential fixed noise sources within the Project, including planned SPS, E&M facilities and split type air-conditioners shall be designed properly with implementation of the abovementioned at-source mitigation measures as far as practicable to comply with the relevant noise criteria as stipulated in EIAO-TM. Details could be referred to the “Good Practices on Ventilation System Noise Control” and “Good Practices on Pumping System Noise Control” issued by EPD. With implementation of the abovementioned at-source mitigation measures as far as practicable, the noise generated from the planned E&M equipment and split type air-conditioners is expected to be minimal. Therefore, no adverse fixed noise sources impact is anticipated arising from the potential planned fixed noise sources of the Project.

Fixed Noise Sources to the Proposed Project Development

9.7.7 Noise sensitive façades of the propose residential development and elderly centre (i.e., proposed project development) may be impacted by the surrounding fixed noise sources. Based on best available information, no major planned fixed noise sources from other projects were found. On the other hand, site visits for the identification of existing potential fixed noise sources were conducted on 20 May 2022, 14 June 2022, 15 February 2023 and 16 February 2023. The locations of the existing fixed noise sources are shown in Figure 9.6. The existing fixed noise sources are described in the sections below and summarised in Table 9.14.

Yuen Long Industrial Estate (YLIE)

9.7.8 YLIE is located to the east, approximately 180m from the proposed residential development of the Project. YLIE and the Project Site is separated by Shan Pui River. Potential fixed noise sources within the 300m Assessment Area from the proposed residential area of the Project were described below:

a. Indoor Loading / Unloading Activities

9.7.9 The major loading / unloading activities were carried out inside the warehouses (i.e., substantial structure). Given that the major loading / unloading activities are carried out inside a substantial structure, with sufficient buffer distance to the Project Site (i.e., at least 180m), no significant noise impact from the indoor loading / unloading activities is anticipated. In addition, no noticeable operation noise from the manufacturing activities during night-time were perceived. With consideration of no significant noise impact from the indoor loading / unloading activities, this has been excluded from the fixed noise impact assessment calculations.

b. Outdoor Loading / Unloading Activities

9.7.10 Based on the site visits, no large-scale outdoor loading / unloading activities or bulk storage were found at open storage sites within the concerned area of YLIE. Moreover, it is observed that the loading / unloading equipment were neatly parked without the trace of active operations, except a crawler crane for which the jib was extended at OL1 as shown in Figure 9.6. No tonality is expected from general loading / unloading activities. No night-time outdoor loading / unloading activities were observed. Therefore, it is assumed that the crawler crane would be a regular noise source during day and evening time and included in the assessment. The SWL of crawler crane would be reference to the GW-TM with 100% usage of time (i.e., 112 dB(A)) as a conservative approach.

c. Manufacturing Activities

9.7.11 No outdoor manufacturing processes were found in the concerned area of YLIE. The manufacturing processes (e.g., factory machines) are carried out inside a substantial structure with sufficient buffer distance from the Project Site (i.e., at least 180m). Based on the site observations, no noticeable noise from the manufacturing activities were perceived at the boundary of the proposed residential development of the Project. Therefore, no significant noise impact from manufacturing activities is anticipated. With consideration of no significant noise impact from the manufacturing activities, this has been excluded from the fixed noise impact assessment calculations.

d. Wang Lok Street Parking Lot

9.7.12 Based on the latest layout of the proposed bridge alignment as shown in Figure 9.6, the proposed bridge would occupy a certain area of the existing Wang Lok Street Parking Lot. Based on the information from the traffic consultant, the change to the car park would not increase the number of vehicles, especially the heavy vehicles. As such, the smaller car park would have less noise impact. However, the proposed bridge alignment is subject to change during the detailed design stage. As a conservative approach, the existing operation mode of the Wang Lok Street Parking Lot is considered as the worst-case scenario and adopted in this assessment.

9.7.13 The existing Wang Lok Street Parking Lot is located at least 180m away from the proposed residential development which is separated by Shan Pui River. The parking lot is neither a large-scale open car park nor a multi-storey car park. Based on the site observations, the manoeuvring speed within the car park is low. Based on the information from the traffic consultant, the traffic flow is low and the number of heavy vehicles during late night and early morning is limited (e.g., ~3 heavy vehicles per hours during 2300 to 0700). In addition, no trailer truck is allowed within the parking lot due to the 10m length restriction. The road width inside the parking lot is wide (e.g., about 10m between the heavy vehicle parking areas), limited start and stop activities are anticipated. Nevertheless, the entrance and exit area is not directly facing the proposed development (e.g., facing towards YLIE). Therefore, no significant noise impact from Wang Lok Street Parking Lot is anticipated. With consideration of no significant noise impact from Wang Lok Street Parking Lot, this has been excluded from the fixed noise impact assessment calculations.

e. Ventilation System

9.7.14 A number of cooling towers (CT1 to CT20) were observed at the concerned area of YLIE as shown in Figure 9.6. The cooling towers are known as fixed noise sources and thus included in the assessment. Information request letters (as attached in Appendix 9.7) were issued to the owners of the cooling towers on 5 July 2022, 30 November 2023 and 27 December 2024, but no any written responses were received. Due to inaccessibility to the concerned cooling towers at YLIE (Leeman Hydraulic Technology Company Limited), on-site measurement was not conducted. The models of cooling towers were best estimated based on their dimensions and shape through aerial photos (see Appendix 9.7). SWLs of the cooling towers were reference to the similar catalogue, and 6dB(A) tonality was assumed for all cooling towers as a conservative approach.

Yuen Long Road Safety Centre (YLRSC)

9.7.15 YLRSC is a government designated driving school which provides a training ground for students to practice driving skills during daytime and evening time periods. The driving activities inside the training ground could cause potential noise impact and thus is included in the assessment. Noise measurement was conducted at the boundary of YLRSC which is next to the existing NSR E02. The noise level is 56 dB(A) at free-field condition as detailed in Appendix 9.7.

9.7.16 Yuen Long Barrage Scheme (YLBS)

With reference to the approved EIA Report of YLBS, the barrage system necessitates a total pumping capacity of 300 m³/s with 24 hours operation. Considering the pumping capacity is large, potential noise impact from the YLBS has been included in the noise assessment. SWLs of the proposed YLBS Pumping Station A (YLBS1) and YLBS Pumping Station B (YLBS2) were reference from the EIA Report of YLBS as detailed in Appendix 9.7.

Table 9.14: List of Existing Potential Fixed Noise Sources

ID	Name	Equipment / Activities	Included in quantitative assessment	Remark
OL1 & CT1-CT20	Yuen Long Industrial Estate (YLIE)	Indoor Loading / Unloading Activities	No	Conducted inside a substantial structure of the warehouses.
		Outdoor Loading / Unloading Activities (OL1)	Yes	The loading / unloading equipment were neatly parked without trace of active operations, except a crawler crane. The crawler crane is considered as noise source during daytime and evening time periods.
		Manufacturing Activities	No	Conducted inside a substantial structure of the factories.
		Wang Lok Street Parking Lot	No	Neither a large-scale open car park nor a multi-storey car park. Manoeuvring speed within the car park is low.
		Ventilation System (CT1 – CT20)	Yes	The identified cooling towers are considered as noise sources. Noise survey was conducted as detailed in Appendix 9.7.
YLRSC	Yuen Long Road Safety Centre (YLRSC)	Driving Activities	Yes	Potential noise impact from the driving training.
YLBS1 YLBS2	Yuen Long Barrage Scheme (YLBS)	Pumping Station (YLBS1 and YLBS2)	Yes	Potential noise impact from the large size pumping station.

Assessment Area

9.7.17 As mentioned, the proposed residential development is the only concerned NSR in the fixed noise impact assessment under this Project. Therefore, the Assessment Area for fixed noise impact is 300m from the boundary of the proposed residential development of the Project.

Noise Sensitive Receivers

9.7.18 The Assessment Area for fixed noise source impact is 300m from the Development Site. Locations of representative NSRs have been selected as shown in Figure 9.5. Detailed information on the selected NAPs is summarised in Table 9.15. Details of the Area Sensitive Ratings (ASRs) and the criteria have been discussed in the paragraph below.

Type of Area Containing NSR

9.7.19 The proposed residential development under the Project comprises of a certain number of low-rise houses and high-rise buildings. Therefore, the representative NSRs of the proposed residential development are not considered to be located at a rural area or low-density area consisting of low-rise or isolated high-rise developments. The wetland enhancement area would be located adjacent to the proposed residential development. There would be planned club houses and commercial centre within the project development but without industrial activities. Therefore, it is not considered as an urban area. Thus, it is considered that the Development Site is located at an “area other than those above” in the IND-TM.

Degree to which NSR is affected by IF

9.7.20 YLIE consists of a number of factories or industrial establishments with industrial operations and considered as an Influencing Factor (IF). However, YLIE and the proposed residential development is separated by Shan Pui River with at least 150m buffer distance. It is considered that the proposed residential development would not be directly affected by YLIE.

Area Sensitive Ratings (ASRs)

9.7.21 Since NSRs of the proposed residential development are not affected by any IF and is located at an “area other than above” in the IND-TM, the NSRs should be considered as “ASR B”.

9.7.22 As such, all representative NSRs of the proposed residential development would be considered as “ASR B” in this assessment. The Area Sensitivity Ratings assumed in this report are for indicative assessment purposes only. Noise from fixed noise sources is controlled under the Noise Control Ordinance. The Noise Control Authority would decide the ASRs at the time of assessment based on the contemporary situations / conditions. Nothing in this report shall bind the Noise Control Authority in the context of enforcement against any of the fixed plant / industrial noise sources identified and assessed in the future under the NCO. The Noise Control Authority shall determine the noise impact on the basis of prevailing legislation and practices being in force and taking into account contemporary conditions/ situation of adjoining land uses.

Table 9.15: Representative NSRs and NAPs for Fixed Noise Source Assessment

ID^[1]	NAP ID	Locations / Descriptions	ASR	Noise Criteria for existing noise sources, Leq_30mins, dB(A) ^[2]
ID^[1]	NAP ID	Locations / Descriptions	ASR	D/E ^[3]	N ^[3]
Project NSRs (within Project Site)
P01-R	P01-R_FN01	Phase 1 of Residential Development	B	65	55
P01-R	P01-R_FN02	Phase 1 of Residential Development	B	65	55
P02-R	P02-R_FN01	Phase 2 of Residential Development	B	65	55
P03-R	P03-R_FN01	Phase 3 of Residential Development	B	65	55
	P03-R_FN02	Phase 3 of Residential Development	B	65	55
	P03-R_FN03	Phase 3 of Residential Development	B	65	55
P01-EC	P01-EC_FN01	Elderly Centre under Phase 1	B	65	55
	P01-EC_FN02	Elderly Centre under Phase 1	B	65	55
	P01-EC_FN03	Elderly Centre under Phase 1	B	65	55
	P01-EC_FN04	Elderly Centre under Phase 1	B	65	55

Notes:

[1] The above noise standards apply to uses which rely on opened windows for ventilation.

[2] The above standards shall be viewed as the maximum permissible noise levels assessed at 1m from the external façade.

[3] D/E – Day and Evening (0700 to 2300 hours); N – Night (2300 to 0700 hours)

Assessment Methodology

9.7.23 Given that there is no available information from the owners, estimation is made based on the site observations. The noise levels were assessed based on the standard acoustics formula as follows:

SPL = SWL – DC + FC + TC

Where:

SPL Sound Pressure Levels at NSRs, in dB(A)

SWL Sound Power Levels of Fixed Noise Sources, in dB(A)

DC Distance Correction, in dB(A) by DC = 20log(D) + 8

D Horizontal distance between the NSR and noise source in meters ^[1]

FC Façade Correction of +3 dB(A)

TC Tonality Correction, if any

Remark [1] – In order to fulfil Clause(b)(b2) of Appendix H of the Study Brief and follow a conservative approach for the fixed noise impact assessment, horizontal distance has been adopted. As such, the calculated SPLs could represent the noise levels at the NSRs at various representative floor levels.

Prediction and Evaluation of Fixed Noise Source Impact

9.7.24 The predicted noise levels from the surrounding fixed sources to representative project related NSRs are summarised in Table 9.16 and detailed in Appendix 9.8. Given that the predicted noise levels do not exceed the noise criteria, no adverse noise impact from the surrounding fixed noise sources is anticipated.

Table 9.16: Fixed Noise Source Impact due to Existing and Planned Fixed Noise Sources on Project NSRs

ID ^[1]	NAP ID	ASR	Predicted Noise Level, Leq_30mins, dB(A) ^{[2] [4]}		Noise Criteria for existing noise sources, Leq_30mins, dB(A) ^[2]		Exceedance [Y/N]
ID ^[1]	NAP ID	ASR	D/E ^[3]	N ^[3]	D/E ^[3]	N ^[3]	Exceedance [Y/N]
Project NSRs (within Project Site)
P01-R	P01-R_FN01	B	61	51	65	55	N
P01-R	P01-R_FN02	B	61	50	65	55	N
P02-R	P02-R_FN01	B	60	49	65	55	N
P03-R	P03-R_FN01	B	60	49	65	55	N
	P03-R_FN02	B	57	47	65	55	N
	P03-R_FN03	B	57	48	65	55	N
P01-EC	P01-EC_FN01	B	60	51	65	55	N
	P01-EC_FN02	B	60	51	65	55	N
	P01-EC_FN03	B	60	51	65	55	N
	P01-EC_FN04	B	61	51	65	55	N

Notes:

[1] The above noise standards apply to uses which rely on opened windows for ventilation.

[2] The above standards shall be viewed as the maximum permissible noise levels assessed at 1m from the external façade.

[3] D/E – Day and Evening (0700 to 2300 hours); N – Night (2300 to 0700 hours)

[4] Shortest horizontal distances between NAPs to the fixed noise sources have been adopted for the assessment as a conservative approach. Therefore, the predicted noise levels calculated based on these shortest horizontal distances can represent noise levels at various floor levels for different NAPs (i.e. For P01-R, P02-R, and P03-R, the floor levels range from 1/F at 11.1mPD to 25/F at 87.9mPD, while for P01-EC, the floor levels range from G/F at 6.8mPD to 5/F at 23.9mPD.)

Mitigation Measures

9.7.25 No noise exceedances were found, and hence no mitigation measures are required.

Conclusion

9.7.26 No major planned fixed noise sources were identified under the Project. The proposed private underground SPS would be located underground and its E&M equipment (e.g., sewage pumps and mechanically raked bar screens) would be fully enclosed or provided with acoustic treatments (e.g., acoustic silencers at the outlet of the air extraction fans). On the other hand, most of the E&M equipment will be installed inside the plant rooms, and hence no adverse noise impact arising from the enclosed E&M equipment is anticipated. Small, low powered split type air-conditioners will be installed at the visitor centre, elderly centre, commercial centre and club houses. However, the noise from the outdoor units of the said air-conditioners is minimal, and hence no adverse noise impact arising from the outdoor units is anticipated. To ensure the fixed plant noise generated by the Proposed Development would not cause excessive impact to nearby noise sensitive receivers, potential fixed noise sources within the Proposed Development shall be properly designed to meet the relevant noise criteria as stipulated in Chapter 9 of the HKPSG and NCO. Provisions shall be made to control the fixed noise sources by suitable at source noise control measures such as quieter plant, silencers and acoustic linings when necessary. As such, it is anticipated that the fixed plant noise impact on the surrounding NSRs due to the operation of the Proposed Development will not exceed the relevant noise criteria under the HKPSG and NCO.

9.7.27 Noise impact from the surrounding fixed noise sources to the proposed residential development and elderly centre were assessed. No noise exceedances were found. Thus, no adverse noise impact from the surrounding fixed noise sources is anticipated.

9.7.28 Fixed Noise Management Plan (FNMP) shall be prepared and submitted to EPD for approval before associated tender stage and commencement of construction work of the Project. The FNMP shall review/ update (1) the fixed noise impact from the Project fixed noise sources (including background noise measurement) and (2) the fixed noise impact to the Project NSRs; and provide sufficient mitigation measures, where necessary. Prior consent shall be sought from EPD on the assessment methodology(ies) and assumptions of the FNMP based on the future best available information (e.g. latest development layouts and any written response from occupiers of nearby premises about fixed noise sources during detailed design stage of the Project). For conservativeness, fixed noise source impact measurements at the worst-affected representative Project NSR(s) at elevated levels, including low, mid and high levels during construction stage to verify assessment findings may be required and such information if available shall be documented in FNMP or updated FNMP. The FNMP shall include updated Fixed Noise Sources Impact Assessment and associated Noise Mitigation Measures, which include both receiver-end measures (e.g., acoustic windows or enhanced acoustic balconies) and off-site at-source noise mitigation measures where feasible. The requirements for the preparation of FNMP and its updating shall be included in Tender Specifications for the construction of the Project.

9.8 Conclusions and Recommendations

Construction Phase

9.8.1 A construction noise impact assessment has been undertaken to predict the noise levels at the representative NSRs due to the construction of the Project. Practicable mitigation measures, including good construction site practices, use of quiet construction method / Quality Powered Mechanical Equipment and movable noise barriers, have been recommended. With the implementation of the recommended mitigation measures, the predicted construction noise levels at all NSRs comply with the noise criteria during the daytime period. Therefore, no unacceptable noise impact, as well as cumulative impact, is expected to arise from the construction activities. Also, no residual impact is anticipated.

9.8.2 Construction Noise Management Plan (CNMP) shall be submitted to EPD for approval before tender stage and before commencement of construction works of the Project. The CNMP shall review the construction noise impact with the updated construction programme and provide sufficient mitigation measures, where necessary.

Operational Phase

Road Traffic Noise

9.8.3 The potential road traffic noise impacts have been assessed based on the peak traffic flows in 2051. No traffic noise exceedances were found, and hence adverse traffic noise impact is not anticipated.

9.8.4 Traffic Noise Management Plan (TNMP) shall be submitted to EPD for approval before tender stage and before commencement of construction work of the Project. The TNMP should review the traffic noise impacts and provide sufficient mitigation measures, where necessary.

Fixed Noise Sources

9.8.5 No major planned fixed noise sources were identified under the Project. The proposed private underground SPS would be located underground and its E&M equipment (e.g., sewage pumps and mechanically raked bar screens) would be fully enclosed or provided with acoustic treatments (e.g., acoustic silencers at the outlet of the air extraction fans). On the other hand, most of the E&M equipment for Visitor Centre, Elderly Centre, Commercial Centre and Clube Houses (e.g. water pumps, drainage or/ and sewage pumps, fire services pumps and transformer) will be installed inside the plant rooms. Small, low powered split type air-conditioners instead of chiller or cooling tower will be installed for Visitor Centre, Elderly Centre, Commercial Centre and Clube Houses. The noise generated from the small and low powered split type air-conditioners is expected to be insignificant.

9.8.6 To ensure the fixed plant noise generated by the Proposed Development would not cause excessive impact to nearby noise sensitive receivers, planned fixed noise sources within the Proposed Development shall be properly designed to meet the relevant noise criteria as stipulated in EIAO-TM. Provisions of the proposed at-source mitigation measures shall be made to control the fixed noise sources by suitable at source noise control measures such as quieter plant, silencers and acoustic enclosure when necessary. As such, no adverse fixed noise impact is anticipated from the planned fixed plants during the operation of the Proposed Development.

9.8.7 Noise impact from the existing fixed noise sources to the proposed residential development and elderly centre was assessed. No noise exceedance was found. Thus, no adverse noise impact from the surrounding fixed noise sources is anticipated.

9.8.8 Fixed Noise Management Plan (FNMP) shall be prepared and submitted to EPD for approval before associated tender stage and commencement of construction work of the Project. The FNMP shall review/ update (1) the fixed noise impact from the Project fixed noise sources (including background noise measurement) and 2) the fixed noise impact to the Project NSRs; and provide sufficient mitigation measures, where necessary. Prior consent shall be sought from EPD on the assessment methodology(ies) and assumptions of the FNMP based on the future best available information (e.g. latest development layouts and any written response from occupiers of nearby premises about fixed noise sources during detailed design stage of the Project). For conservativeness, fixed noise source impact measurements at the worst-affected representative Project NSR(s) at elevated levels, including low, mid and high levels during construction stage to verify assessment findings may be required and such information if available shall be documented in FNMP or updated FNMP. The FNMP shall include updated Fixed Noise Sources Impact Assessment and associated Noise Mitigation Measures, which include both receiver-end measures (e.g., acoustic windows or enhanced acoustic balconies) and off-site at-source noise mitigation measures where feasible. The requirements for the preparation of FNMP and its updating shall be included in Tender Specifications for the construction of the Project.