5 Noise Impact

5.1 Introduction

5.1.1 This section presents the assessment on potential noise impacts arising from the construction and operation of the Project. The noise impact assessment was conducted and presented according to the requirements of Annex 5 and Annex 13 of the Technical Memorandum on Environmental Impact Assessment Process (EIAO-TM) and the EIA Study Brief No. ESB-299/2017 issued in August 2017.

5.2 Environmental Legislation, Standards and Guidelines

General

5.2.1 The relevant legislation and associated guideline applicable to this study for the assessment of noise impacts include:

· Noise Control Ordinance (NCO) (Cap.400);

· Environmental Impact Assessment Ordinance (EIA Ordinance) (Cap. 499);

· Technical Memorandum on Noise from Construction Work other than Percussive Piling (GW-TM);

· Technical Memorandum on Noise from Construction Work in Designated Areas (DA-TM);

· Technical Memorandum for the Assessment of Noise from Places other than Domestic Premises, Public Places or Construction Sites (IND-TM); and

· Technical Memorandum on Environmental Impact Assessment Process (EIAO-TM).

Construction Noise

Noise Standards for Construction Works in Non-restricted Hours

5.2.2 Table 1B in Annex 5 of the EIAO-TM provides the assessment criteria for daytime construction works (excluding percussive piling) between the hours of 0700 and 1900 on Monday to Saturday (not being a general holiday), i.e. non-restricted hours. The EIAO-TM sets out the construction noise assessment limits, which are L_{eq 30min}75dB(A) for domestic dwellings and L_{eq 30min} 70dB(A) for school (or 65dB(A) during examination periods). The recommended noise standards for uses rely on openable windows for ventilation are summarised in Table 5.1 below.

Table 5.1 Noise Standards for Daytime Construction Activities

Uses	Noise Standard, Leq 30min, dB(A) for 0700 to 1900 hours on any day not being a Sunday or general holiday
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 examination period)

5.2.3 All the proposed construction works are expected to be carried out during non-restricted hours. 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 construction noise permit (CNP) application to the Noise Control Authority and abide by any conditions stated in the CNP, should one be issued. It should be noted that description made in this report does not guarantee that a CNP will be granted for the project construction.  The Noise Control Authority would take into account the contemporary conditions of adjoining land uses and other considerations when processing the CNP application based on the NCO and relevant TM issued under the NCO. The findings in the report shall not bind the Noise Control Authority in making the decision.

Operation Noise

Noise Standards for Road Traffic Noise Assessment

5.2.4 Table 1A in Annex 5 of the EIAO-TM provides the assessment criteria for road traffic noise impact at NSRs which rely on the opened windows for ventilation. The relevant criteria are shown in Table 5.2 below.

Table 5.2 Noise Standards for Road Traffic Noise

Common Uses	Road Traffic Noise, L10 (1 hour), dB(A)
All domestic premises including temporary housing accommodation	70
Hotels and hostels	70
Offices	70
Educational institutions including kindergartens, child care centers and all others where unaided voice communication is required	65
Places of public worship and courts of law	65
Hospitals, clinics, convalescences and residential care homes for the elderly · diagnostic rooms · wards	55
Note: The above criteria apply to noise sensitive uses which rely on open window for ventilation and should be viewed as the maximum permissible noise levels assessed at 1m from the external facades.

Noise Standards for Fixed Noise Source Impact Assessment

5.2.5 Table 1A in Annex 5 of the EIAO-TM and the Technical Memorandum for the Assessment of Noise from Places other than Domestic Premises, Public Places or Construction Sites (IND-TM) stipulate the appropriate Acceptable Noise Level (ANL) for fixed noise sources. The ANLs as shown in Table 5.3 are dependent on the Area Sensitivity Ratings (ASRs) of the NSRs, as defined in accordance with the IND-TM. The EIAO-TM requires that the planned fixed noise sources shall comply with 5 dB(A) below the ANLs shown in Table 5.3 or the prevailing background noise levels, whichever lower.

Table 5.3 Acceptable Noise Levels (ANLs)

Time Period	ANL on Different Area Sensitivity Rating (Leq, 30min, dB(A))
	ASR A	ASR B	ASR 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

Noise Standards for Rail Noise Assessment

5.2.6 Rail noise impacts shall comply with the ANL shown in Table 5.3. The EIAO-TM also specifies a noise limit of L_max 85 dB(A) during night-time (2300 to 0700).

5.3 Baseline Conditions

Existing Environment

5.3.1 The Project Site comprises the Potential Development Area (PDA) and works area proposed for the associated infrastructure (ie road improvement works and utility works). The PDA is located to the north of Tuen Mun Area 54. Tsing Shan Firing Range adjoins the north-western boundary of the PDA. The area is rural in nature and is characterised by low-rise/village type houses. Background noise in the vicinity is typical of rural environment. No significant fixed plant noise was identified from adjacent premises. The existing noise climate at the eastern part of the PDA is dominated by road traffic noise from Tuen Mun Road and Castle Peak Road, and rail noise from Light Rail Transit and the West Rail Line.

5.3.2 The proposed associated infrastructure is mainly located along the existing roads. The noise climate at areas proposed for the associated infrastructure is dominated by road traffic noise from the road network.

Prevailing Noise Levels

5.3.3 Two 24-hr prevailing noise levels have been measured near the existing NSRs in the vicinity of the PDA on 7-8 Jan 2020 and 12-13 Jan 2020. Figure 5.1 shows the locations of the prevailing noise measurement. A summary of the prevailing noise measurement results in given in Table 5.4.

Table 5.4 Prevailing Noise Measurement Results

Measurement Location ID	Location Description	Prevailing Noise Levels, L90 1hr dB(A) ^[1]		Dominant Noise Source
		Day & Evening Period ^[2]	Night Period ^[2]
B01	Near House no. 136, Tsz Tin Tsuen	41.4	34.8	Vehicles accessing the car repairing workshop
B02	Footpath near house no. 271, Tsz Tin Tsuen	44.9	42.1	Traffic noise along Hong Po Road
B03	Footpath near house no. 161, Tsz Tin Tsuen	45.0	38.2	Traffic noise along Hong Po Road
B04	Pavement along Siu Hong Road (near Siu Ning House, Siu Hong Court)	54.6	46.3	Traffic noise along Siu Hong Road and background noise near residential area
B05	Near Footbridge at Hong Po Road	47.2	40.5	Traffic noise along Hong Po Road
Note: [1] The noise measurement descriptor is A-weighted sound pressure level exceeded for 90% of the time (L90) measured using Type 1 sound level meter. The hour within the daytime/evening period and night-time period with the lowest noise levels were taken to represent the prevailing noise levels. Measurements were taken free-field. [2] Day and Evening: 0700 to 2300 hours; Night: 2300 to 0700 hours

5.3.4 Given the future development would comprise of high-rise residential development and schools, whereas the existing environment is comprised of low-rise residential development and scattered rural industrial operations and open storage, the prevailing noise measurements taken at B04 is considered more representative of the future prevailing noise level within the PDA.

5.4 Noise Sensitive Receivers

5.4.1 With reference to Annex 13 of the EIAO-TM, noise sensitive receivers (NSRs) shall include residential uses (all domestic premises including temporary housing), institutional uses (educational institutions including kindergarten and nurseries), hospitals, medical clinics, homes for the aged, convalescent homes, places of public worship, libraries, court of law, performing arts centres, auditoria and amphitheatres, country park and others.

5.4.2 The assessment area for noise impact is generally defined by a distance of 300m from the Project Site (ie the PDA boundary and the associated infrastructure works). Representative NSRs within a distance of 300m from the Project Site have been identified with the first layer of NSRs selected as representative NSRs for assessment. These NSRs include the existing, committed and planned developments during both construction and operation phases. Prior agreement with the EPD on the assessment area and location of NSRs have been sought.

5.4.3 Representative 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), other published plans in the vicinity of the Project site. The population and development layout of the planned development in Tuen Mun Area 54 are based on information provided by the Housing Department and other best available study reports at the time of this EIA submission (see Appendix 5.1). The tentative layout of the housing sites confirmed by the Housing Authority have been used to identify the planned sensitive receivers within the PDA.

5.4.4 According to the implementation phasing of the development within the PDA, population intake will commence at San Hing Road Site Extension (SHR Site Extension) in year 2030, San Hing Road Site (SHR Site) in year 2031 and Hong Po Road Site (HPR Site) in year 2033.

5.4.5 The overall relevant NSRs are summarised in Table 5.5 and their locations are shown in Figures 5.2 and 5.3. Photos of these representative NSRs are provided in Appendix 5.2. Relevant NSRs for various types of noise sources are shown in Figures 5.4 to 5.9. The representative NSRs for specific noise assessment are shown in Figures 5.10 to 5.23.

Table 5.5 Overall Relevant Noise Sensitive Receivers

NSR ID	NSR Description	Land Use	No. of Storeys ^[1]
Existing/ Planned NSRs (outside PDA boundary)
E1	Village House near Villa Pinada	Residential	1
E2	Village House near Villa Pinada	Residential	1
E3	Village House near Villa Pinada	Residential	2
E4	Village House near Realigned Hong Po Road	Residential	1
E5	Village House near Realigned Hong Po Road	Residential	1
E6	Villa Pinada	Residential	3
E7	Village House near Villa Pinada	Residential	2
E8	Village House near San Hing Tsuen	Residential	1
E9	San Hing Tsuen	Residential	3
E10	To Yuen Wai	Residential	3
E11	TWGHs Yau Tze Tin Memorial College	Educational Institution	6
E12	Siu Hong Court	Residential	26-29
E13	Kei Lun Wai	Residential	3
E14	Primary School at TM54 Site 4A (East)	Educational Institution	6
E15	Secondary School at TM54 Site 4A (East)	Educational Institution	6
E16	Yan Tin Estate	Residential	34 – 38
E17	Unicorn Garden	Residential	3
E18	Tsz Tin Tsuen	Residential	1 – 3
E19	Po Tong Ha	Residential	3
E20	Village House near Proposed Road L7	Residential	1
E21	TM54 Site 1 & 1A	Residential	37 – 40
E22	Po Wah Garden Phase 2	Residential	3
E23	TM54 Site 5	Residential	35
E24	TM54 Site 3/4 (West)	Residential	29
E25	Not used	-	-
E26	Po Tin Estate	Residential	29
E27	Goodrich Garden	Residential	39 – 40
E28	Eight Regency	Residential	28
E29	Siu Pong Court	Residential	33
E30	C.C.C. Mong Wong Far Yok Memorial Primary School	Education Institution	6
E31	SRBCEPSA Ho Sau Ki School	Education Institution	7
E32	Siu Kwai Court	Residential	35
E33	Fung Shan Temple	Place of Public Worship	1
E34	Po Leung Kuk Horizon East Primary School	Educational Institution	7
Planned NSRs (within PDA boundary)
P1 – P9	San Hing Road Site	Residential	32 – 46
P10 – P11	School at San Hing Road Site	Educational Institution	7
P12 – P13	San Hing Road Site Extension	Residential	43
P14 – P16	School at San Hing Road Site Extension	Educational Institution	7
P17 – P20	Hong Po Road Site	Residential	43 – 44
SHRW	Welfare facility at San Hing Road Site	Welfare	1
HPRW	Welfare facility at Hong Po Road Site	Welfare	1
Note: [1] Noise sensitive storeys, exclude lobby and refuge floor.

Construction Noise

5.4.6 The assessment area for construction noise impact is 300m from the Project Site boundary. The NSRs located close to the construction activities have been selected from Table 5.5 and are shown in Figures 5.4 and 5.5. The first layer of representative NSRs and noise assessment points (NAPs) closest to the construction activities have been selected for construction noise assessment and are shown in Figures 5.10 to 5.15 and are summarised in Table 5.6.

Table 5.6 Representative NSRs and NAPs for Construction Noise Assessment

NSR ID	NAP ID	NAP Description	Land Use	No. of Storeys ^[1]
Existing/ Planned NSRs (outside PDA boundary)
E1	E1_CN01	Village House near Villa Pinada	Residential	1
E2	E2_CN01	Village House near Villa Pinada	Residential	1
E3	E3_CN01	Village House near Villa Pinada	Residential	2
E4	E4_CN01	Village House near Realigned Hong Po Road	Residential	1
E5	E5_CN01	Village House near Realigned Hong Po Road	Residential	1
E6	E6_CN01	House no.157, Villa Pinada	Residential	3
E6	E6_CN02	House no.152, Villa Pinada	Residential	3
E6	E6_CN03	House no.113, Villa Pinada	Residential	3
E7	E7_CN01	Village House near Villa Pinada	Residential	2
E8	E8_CN01	Village House near San Hing Tsuen	Residential	1
E9	E9_CN01	House no. 255, San Hing Tsuen	Residential	3
E9	E9_CN02	House no. 240, San Hing Tsuen	Residential	3
E9	E9_CN03	House no. 99, San Hing Tsuen	Residential	3
E9	E9_CN04	House no. 37, San Hing Tsuen	Residential	3
E10	E10_CN01	House no. 75, To Yuen Wai	Residential	3
E10	E10_CN02	Block E Hanlin Court, no. 146 To Yuen Wai	Residential	3
E11	E11_CN01	TWGHs Yau Tze Tin Memorial College	Educational Institution	6
E12	E12_CN01	Siu Kei House, Siu Hong Court	Residential	29
E12	E12_CN02	Siu Shun House, Siu Hong Court	Residential	29
E13	E13_CN01	House no. 199A, Kei Lun Wai	Residential	3
E14	E14_CN01	Primary School at TM54 Site 4A (East)	Educational Institution	6
E15	E15_CN01	Secondary School at TM54 Site 4A (East)	Educational Institution	6
E16	E16_CN01	Chun Tin House, Yan Tin Estate	Residential	34
E16	E16_CN02	Yuet Tin House, Yan Tin Estate	Residential	34
E16	E16_CN03	Luk Tin House, Yan Tin Estate	Residential	34
E17	E17_CN01	Block 1, Unicorn Garden	Residential	3
E18	E18_CN01	House no. 272, Tsz Tin Tsuen	Residential	3
E18	E18_CN02	Village House near no. 151, Tsz Tin Tsuen	Residential	1
E18	E18_CN03	House no. 136, Tsz Tin Tsuen	Residential	1
E19	E19_CN01	Block C, Houses no.80 Po Tong Ha	Residential	3
E20	E20_CN01	Village House near Proposed Road L7	Residential	1
E21	E21_CN01	Block 1, TM54 Site 1 & 1A	Residential	37
E22	E22_CN01	Block D, Phase 2, Po Wah Garden	Residential	3
E23	E23_CN01	Block 1, TM54 Site 5	Residential	35
E24	E24_CN01	TM54 Site 3/4 (West)	Residential	29
E26	E26_CN01	Block 9, Po Tin Estate	Residential	29
E26	E26_CN02	Block 1, Po Tin Estate	Residential	29
E27	E27_CN01	Tower 1, Goodrich Garden	Residential	39
E28	E28_CN01	Eight Regency	Residential	28
E29	E29_CN01	Siu Pong Court	Residential	33
E30	E30_CN01	C.C.C. Mong Wong Far Yok Memorial Primary School	Educational Institution	6
E31	E31_CN01	SRBCEPSA Ho Sau Ki School	Educational Institution	7
E32	E32_CN01	Siu Kwai Court	Residential	35
E33	E33_CN01	Fung Shan Temple	Place of Public Worship	1
E34	E34_CN01	Po Leung Kuk Horizon East Primary School	Educational Institution	7
Planned NSRs (within PDA boundary)
P7	P7_CN01	Block 7, San Hing Road Site	Residential	44
P8	P8_CN01	Block 8, San Hing Road Site	Residential	44
P10	P10_CN01	School at San Hing Road Site	Education Institution	7
P11	P11_CN01	School at San Hing Road Site	Education Institution	7
P12	P12_CN01	Block 1, San Hing Road Site Extension	Residential	43
P13	P13_CN01	Block 2, San Hing Road Site Extension	Residential	43
Note: [1] Noise sensitive storeys, exclude lobby and refuge floor.

Road Traffic Noise

5.4.7 The assessment area for road traffic noise impact is 300m from the PDA (which comprises all planned new roads) and junction improvement boundaries. The NSRs located close to the Project roads and other roads proposed for junction improvements have been selected from Table 5.5 and are shown in Figures 5.6 and 5.7. All levels of the first layer of existing and planned NSRs that would be most affected by the Project roads and other roads proposed for junction improvements, and the planned NSRs that would be most affected by the Project roads and other roads have been selected as representative NSRs and NAPs for road traffic noise assessment are shown in Figures 5.16 to 5.21 and are summarised in Table 5.7.

Table 5.7 Representative NSRs and NAPs for Road Traffic Noise Assessment

NSR ID	NAP ID	NAP Description	Land Use	No. of Storeys ^[1]
Existing/Planned NSRs (outside PDA boundary)
E1	E1_TN01	Village House near Villa Pinada	Residential	1
E2	E2_TN01	Village House near Villa Pinada	Residential	1
E3	E3_TN01	Village House near Villa Pinada	Residential	2
E4	E4_TN01	Village House near Realigned Hong Po Road	Residential	1
E5	E5_TN01	Village House near Realigned Hong Po Road	Residential	1
E7	E7_TN01	Village House near Villa Pinada	Residential	2
E9	E9_TN01	House no. 99, San Hing Tsuen	Residential	3
E9	E9_TN02	House no. 37, San Hing Tsuen	Residential	3
E9	E9_TN03	House no. 96, San Hing Tsuen	Residential	3
E9	E9_TN04	House no. 102, San Hing Tsuen	Residential	2
E9	E9_TN05	House no. 77, San Hing Tsuen	Residential	3
E9	E9_TN06	House no. 271, San Hing Tsuen	Residential	3
E10	E10_TN01	House no. 75, To Yuen Wai	Residential	3
E10	E10_TN02	House no. 69, To Yuen Wai	Elderly Centre	3
E10	E10_TN03	House no. 68, To Yuen Wai	Elderly Centre	3
E11	E11_TN01	TWGHs Yau Tze Tin Memorial College	Educational Institution	6
E11	E11_TN02	TWGHs Yau Tze Tin Memorial College	Educational Institution	6
E12	E12_TN01	Siu Lai House, Siu Hong Court	Residential	29
E12	E12_TN02	Siu Shun House, Siu Hong Court	Residential	29
E12	E12_TN03	Siu Hang House, Siu Hong Court	Residential	29
E12	E12_TN04	Siu Ning House, Siu Hong Court	Residential	26
E13	E13_TN01	House no. 193A, Kei Lun Wai	Residential	3
E13	E13_TN02	House no. 196, Kei Lun Wai	Residential	3
E13	E13_TN03	House no. 199A, Kei Lun Wai	Residential	3
E16	E16_TN01	Yuet Tin House, Yan Tin Estate	Residential	38
E16	E16_TN02	Chun Tin House, Yan Tin Estate	Residential	34
E16	E16_TN03	Chun Tin House, Yan Tin Estate	Residential	34
E16	E16_TN04	Chun Tin House, Yan Tin Estate	Residential	34
E16	E16_TN05	Chun Tin House, Yan Tin Estate	Residential	34
E16	E16_TN06	Yat Tin House, Yan Tin Estate	Residential	34
E18	E18_TN01	House no. 272, Tsz Tin Tsuen	Residential	3
E18	E18_TN02	House no. 285, Tsz Tin Tsuen	Residential	3
E18	E18_TN03	House no. 136, Tsz Tin Tsuen	Residential	1
E18	E18_TN04	Village House near no. 151 Tsz Tin Tsuen	Residential	1
E18	E18_TN05	House no. 271, Tsz Tin Tsuen	Residential	3
E18	E18_TN06	House no. 274, Tsz Tin Tsuen	Residential	3
E19	E19_TN01	House no. 93, Po Tong Ha	Residential	3
E19	E19_TN02	Block F, Houses no.80, Po Tong Ha	Residential	3
E20	E20_TN01	Village House near Proposed Road L7	Residential	1
E21	E21_TN01	Block 3, TM54 Site 1 & 1A	Residential	40
E21	E21_TN02	Block 2, TM54 Site 1 & 1A	Residential	40
E21	E21_TN03	Block 1, TM54 Site 1 & 1A	Residential	37
E22	E22_TN01	Block F, Phase 2, Po Wah Garden	Residential	3
E22	E22_TN02	Block D, Phase 2, Po Wah Garden	Residential	3
E23	E23_TN01	TM54 Site 5	Residential	35
E23	E23_TN02	TM54 Site 5	Residential	35
E23	E23_TN03	TM54 Site 5	Residential	35
E24	E24_TN01	TM54 Site 3/4 (West)	Residential	29
E24	E24_TN02	TM54 Site 3/4 (West)	Residential	29
E24	E24_TN03	TM54 Site 3/4 (West)	Residential	29
E24	E24_TN04	TM54 Site 3/4 (West)	Residential	29
E26	E26_TN01	Block 9, Po Tin Estate	Residential	29
E27	E27_TN01	Tower 1, Goodrich Garden	Residential	39
E27	E27_TN02	Tower 2, Goodrich Garden	Residential	40
E28	E28_TN01	Eight Regency	Residential	28
E28	E28_TN02	Eight Regency	Residential	28
E29	E29_TN01	Siu Pong Court	Residential	33
E29	E29_TN02	Siu Pong Court	Residential	33
E33	E33_TN01	Fung Shan Temple	Place of Public Worship	1
E34	E34_TN01	Po Leung Kuk Horizon East Primary School	Educational Institution	7
Planned NSRs (within PDA boundary)
P1	P1_TN01	Block 1, San Hing Road Site	Residential	32
P1	P1_TN02	Block 1, San Hing Road Site	Residential	32
P1	P1_TN03	Block 1, San Hing Road Site	Residential	32
P1	P1_TN04	Block 1, San Hing Road Site	Residential	32
P1	P1_TN05	Block 1, San Hing Road Site	Residential	32
P1	P1_TN06	Block 1, San Hing Road Site	Residential	32
P1	P1_TN07	Block 1, San Hing Road Site	Residential	32
P1	P1_TN08	Block 1, San Hing Road Site	Residential	32
P2	P2_TN01	Block 2, San Hing Road Site	Residential	44
P2	P2_TN02	Block 2, San Hing Road Site	Residential	44
P2	P2_TN03	Block 2, San Hing Road Site	Residential	44
P2	P2_TN04	Block 2, San Hing Road Site	Residential	44
P2	P2_TN05	Block 2, San Hing Road Site	Residential	44
P2	P2_TN06	Block 2, San Hing Road Site	Residential	44
P2	P2_TN07	Block 2, San Hing Road Site	Residential	44
P2	P2_TN08	Block 2, San Hing Road Site	Residential	44
P3	P3_TN01	Block 3, San Hing Road Site	Residential	44
P3	P3_TN02	Block 3, San Hing Road Site	Residential	44
P3	P3_TN03	Block 3, San Hing Road Site	Residential	44
P3	P3_TN04	Block 3, San Hing Road Site	Residential	44
P4	P4_TN01	Block 4, San Hing Road Site	Residential	44
P4	P4_TN02	Block 4, San Hing Road Site	Residential	44
P4	P4_TN03	Block 4, San Hing Road Site	Residential	44
P4	P4_TN04	Block 4, San Hing Road Site	Residential	44
P4	P4_TN05	Block 4, San Hing Road Site	Residential	44
P4	P4_TN06	Block 4, San Hing Road Site	Residential	44
P5	P5_TN01	Block 5, San Hing Road Site	Residential	46
P5	P5_TN02	Block 5, San Hing Road Site	Residential	46
P5	P5_TN03	Block 5, San Hing Road Site	Residential	46
P6	P6_TN01	Block 6, San Hing Road Site	Residential	46
P6	P6_TN02	Block 6, San Hing Road Site	Residential	46
P6	P6_TN03	Block 6, San Hing Road Site	Residential	46
P7	P7_TN01	Block 7, San Hing Road Site	Residential	44
P7	P7_TN02	Block 7, San Hing Road Site	Residential	44
P7	P7_TN03	Block 7, San Hing Road Site	Residential	44
P7	P7_TN04	Block 7, San Hing Road Site	Residential	44
P8	P8_TN01	Block 8, San Hing Road Site	Residential	44
P8	P8_TN02	Block 8, San Hing Road Site	Residential	44
P8	P8_TN03	Block 8, San Hing Road Site	Residential	44
P8	P8_TN04	Block 8, San Hing Road Site	Residential	44
P9	P9_TN01	Block 9, San Hing Road Site	Residential	44
P9	P9_TN02	Block 9, San Hing Road Site	Residential	44
P9	P9_TN03	Block 9, San Hing Road Site	Residential	44
P9	P9_TN04	Block 9, San Hing Road Site	Residential	44
P10	P10_TN01	School at San Hing Road Site	Education Institution	7
P10	P10_TN02	School at San Hing Road Site	Education Institution	7
P10	P10_TN03	School at San Hing Road Site	Education Institution	7
P11	P11_TN01	School at San Hing Road Site	Education Institution	7
P11	P11_TN02	School at San Hing Road Site	Education Institution	7
P12	P12_TN01	Block 1, San Hing Road Site Extension	Residential	43
P12	P12_TN02	Block 1, San Hing Road Site Extension	Residential	43
P13	P13_TN01	Block 2, San Hing Road Site Extension	Residential	43
P13	P13_TN02	Block 2, San Hing Road Site Extension	Residential	43
P14	P14_TN01	School at San Hing Road Site Extension	Education Institution	7
P14	P14_TN02	School at San Hing Road Site Extension	Education Institution	7
P15	P15_TN01	School at San Hing Road Site Extension	Education Institution	7
P15	P15_TN02	School at San Hing Road Site Extension	Education Institution	7
P16	P16_TN01	School at San Hing Road Site Extension	Education Institution	7
P17	P17_TN01	Block 1, Hong Po Road Site	Residential	44
P17	P17_TN02	Block 1, Hong Po Road Site	Residential	44
P17	P17_TN03	Block 1, Hong Po Road Site	Residential	44
P18	P18_TN01	Block 2, Hong Po Road Site	Residential	43
P18	P18_TN02	Block 2, Hong Po Road Site	Residential	43
P19	P19_TN01	Block 10, Hong Po Road Site	Residential	43
P19	P19_TN02	Block 10, Hong Po Road Site	Residential	43
P20	P20_TN01	Block 11, Hong Po Road Site	Residential	43
P20	P20_TN02	Block 11, Hong Po Road Site	Residential	43
P20	P20_TN03	Block 11, Hong Po Road Site	Residential	43
P20	P20_TN04	Block 11, Hong Po Road Site	Residential	43
SHRW	SHRW_TN01	Welfare facility at San Hing Road Site	G/IC	1
SHRW	SHRW_TN02	Welfare facility at San Hing Road Site	G/IC	1
SHRW	SHRW_TN03	Welfare facility at San Hing Road Site	G/IC	1
SHRW	SHRW_TN04	Welfare facility at San Hing Road Site	G/IC	1
SHRW	SHRW_TN05	Welfare facility at San Hing Road Site	G/IC	1
SHRW	SHRW_TN06	Welfare facility at San Hing Road Site	G/IC	1
SHRW	SHRW_TN07	Welfare facility at San Hing Road Site	G/IC	1
SHRW	SHRW_TN08	Welfare facility at San Hing Road Site	G/IC	1
HPRW	HPRW_TN01	Welfare facility at Hong Po Road Site	G/IC	1
HPRW	HPRW_TN02	Welfare facility at Hong Po Road Site	G/IC	1
HPRW	HPRW_TN03	Welfare facility at Hong Po Road Site	G/IC	1
HPRW	HPRW_TN04	Welfare facility at Hong Po Road Site	G/IC	1
HPRW	HPRW_TN05	Welfare facility at Hong Po Road Site	G/IC	1
HPRW	HPRW_TN06	Welfare facility at Hong Po Road Site	G/IC	1
HPRW	HPRW_TN07	Welfare facility at Hong Po Road Site	G/IC	1
HPRW	HPRW_TN08	Welfare facility at Hong Po Road Site	G/IC	1
HPRW	HPRW_TN09	Welfare facility at Hong Po Road Site	G/IC	1
Note: [1] Noise sensitive storeys, exclude lobby and refuge floor.

Fixed Noise Sources

5.4.8 The assessment area for fixed noise source impact is 300m from the PDA boundary. The nearby NSRs affected by existing and planned fixed noise sources within the assessment area have been selected from Table 5.5 and shown in Figure 5.22. The location of the representative NSRs and NAPs for fixed noise source assessment are summarised in Table 5.8.

Table 5.8 Representative NSRs and NAPs for Fixed Noise Source Assessment

NSR ID	NAP ID	NAP Description	Land Use	No. of Storeys ^[1]	Area Sensitivity Rating
E11	E11_FN01	TWGHs Yau Tze Tin Memorial College	Educational Institution	6	B ^[2]
E16	E16_FN01	Chun Tin House, Yan Tin Estate	Residential	34	B ^[2]
E18	E18_FN01	Village House at Tsz Tin Tsuen Road	Residential	1	A/B ^[4]
E19	E19_FN01	45C Po Tong Ha	Residential	3	A/B ^[4]
P2	P2_FN01	Block 2, San Hing Road Site	Residential	44	C ^[3]
P3	P3_FN01	Block 3, San Hing Road Site	Residential	44	B ^[2]
P4	P4_FN01	Block 4, San Hing Road Site	Residential	44	B ^[2]
P7	P7_FN01	Block 7, San Hing Road Site	Residential	44	B ^[2]
P9	P9_FN01	Block 9, San Hing Road Site	Residential	44	B ^[2]
P17	P17_FN01	Block 1, Hong Po Road Site	Residential	44	B ^[2]
P20	P20_FN01	Block 11, Hong Po Road Site	Residential	43	B ^[2]
Note: [1] Noise sensitive storeys, exclude lobby and refuge floor. [2] NSRs located in “Area other than those above” not affected or indirectly affected by an influencing factor (Castle Peak Road with AADT exceeding 30,000) [3] NSRs located in “Area other than those above” directly affected by an influencing factor (Castle Peak Road with AADT exceeding 30,000) [4] The current area sensitive rating for E18_FN01 and E19_FN01 is “A” as the surrounding area is rural in nature and not affected by any influencing factor. However, with the proposed high-rise housing development in place in future, the surrounding environment will change. The area sensitivity rating for E18_FN01 and E19_FN01 will be changed to “B” with the Project in place.

Rail Noise

5.4.9 The assessment area for rail noise impact is 300m from the PDA boundary. All level of the first layer of the planned NSRs within the PDA that would be most affected by the LRT and WRL have been selected from Table 5.5 and shown in Figure 5.23. The location of the representative NSRs and NAPs for rail noise assessment are summarised in Table 5.9.

Table 5.9 Representative NSRs and NAPs for Rail Noise Assessment

NSR ID	NAP ID	NAP Description	Land Use	No. of Storeys ^[3]	Area Sensitivity Rating
Planned NSRs (within PDA boundary)
P1	P1_RN01	Block 1, San Hing Road Site	Residential	32	B ^[1]
P1	P1_RN02	Block 1, San Hing Road Site	Residential	32	B ^[1]
P1	P1_RN03	Block 1, San Hing Road Site	Residential	32	C ^[2]
P1	P1_RN04	Block 1, San Hing Road Site	Residential	32	C ^[2]
P1	P1_RN05	Block 1, San Hing Road Site	Residential	32	C ^[2]
P1	P1_RN06	Block 1, San Hing Road Site	Residential	32	C ^[2]
P1	P1_RN07	Block 1, San Hing Road Site	Residential	32	C ^[2]
P2	P2_RN01	Block 2, San Hing Road Site	Residential	44	B^[1] for 1/F-36/F; C ^[2] for 37/F-44/F
P2	P2_RN02	Block 2, San Hing Road Site	Residential	44	B ^[1]
P2	P2_RN03	Block 2, San Hing Road Site	Residential	44	C ^[2]
P3	P3_RN01	Block 3, San Hing Road Site	Residential	44	B^[1] for 1/F-36/F; C ^[2] for 37/F-44/F
Note: [1] NSRs located in “Area other than those above” not affected or indirectly affected by an influencing factor (Castle Peak Road with AADT exceeding 30,000) [2] NSRs located in “Area other than those above” directly affected by an influencing factor (Castle Peak Road with AADT exceeding 30,000) [3] Noise sensitive storeys, exclude lobby and refuge floor.

5.5 Identification of Pollution Sources

Construction Phase

5.5.1 Potential construction noise impacts would arise from the use of powered mechanical equipment (PME) during the construction works of the Project. The key activities during construction phase are typical to other land-based housing development projects, which include site clearance, land decontamination, site formation, piling works, roadworks (i.e. realigned Hong Po Road and proposed Road L7), pipeworks, utility works and road improvement works. Percussive piling works are not expected.

5.5.2 Construction of road tunnels will not be required. Hence, ground-borne construction noise impact is not expected.

5.5.3 The location of the construction work site and the tentative construction programme are presented in Appendix 5.3. The plant inventory as provided by the Project Engineer and the details of PME adopted for the assessment are presented in Appendix 5.4. The construction plant inventory and programme are considered practicable for implementation.

5.5.4 Based on the latest development programme of Tuen Mun Area 54, construction of superstructure at Site 4A (South), Site 4A (East) and Site 5 will be undertaken concurrently with the construction of the Project. In addition, construction work at Tuen Mun Area 29 will also be taken concurrently. Therefore, cumulative construction noise impact is expected.

Operation Phase

5.5.5 During operation phase, the identified noise sources are shown in Figure 5.24 and include the followings:

· Project and other roads within 300m from the PDA boundary and the associated infrastructure works (ie including the junction improvement locations);

· Existing and planned fixed noise sources; and

· Rail noise from the existing West Rail Line and Light Rail Transit (LRT).

5.5.6 Tsing Shan Firing Range (TSFR) currently operated by the People’s Liberation Army Forces Hong Kong is located west of the Project Site adjoining the HPR Site. The firing practice is normally carried out at the Close Quarter Battle Range and open practice ground at Ha Pak Nai and Sheung Pak Nai area, which are on the other side of the mountain ridge to the west of the Project Site. As these facilities are located more than 1km from the Project Site and the mountain ridge is more than 100m higher than the maximum building height of the development, noise impact resulting from the firing practices at TSFR is not anticipated at the Project Site. Site visits to the Project Site during the TSFR practice days (20 August 18, 24 September 18, 22 October 18, 12 March 19, 8 April 19 and 26 July 19) reconfirmed that noise from the TSFR were not detected at the Project Site.

Road Traffic Noise

5.5.7 The road inventory is summarised in Table 5.10. All roads mentioned in Table 5.10 will have certain road traffic noise impacts on both existing and planned NSRs and have been suitably considered in the current assessment.

Table 5.10 Road Inventory

Type	Road
Existing Roads	Castle Peak Road, Yuen Long Highway, Tuen Mun Road, Hong Po Road, Lam Tei Interchange, San Hing Road, Ng Lau Road, Tsing Lun Road, Siu Hong Road, Tsz Tin Road, Hing Kwai Road, Tsun Wen Road, Ming Kum Road, Tin King Road, Leung Shun Street, Leung Wan Street and San Fuk Road
Planned Roads (by others)	Access road planned in Tuen Mun Area 54
Planned Roads (under this Project)	Realigned Hong Po Road, proposed Road L7 including J15, access roads within SHR Site, SHR Site Extension and HPR Site
Junction proposed for improvement (under this Project)	J1 – Lam Tei Interchange/ Castle Peak Road-Lingnam J4 – Tsing Lun Road/ Hong Po Road J6 – Tsing Lun Road/ Tsz Tin Road J12 – Tsun Wen Road/ Ming Kum Road/ Hing Kwai Street J13 – Hing Fu Street/ proposed Road L7 J21 – Ming Kum Road/ Tin King Road

5.5.8 The scale of the junction improvement works at J1, J4, J6, J12 and J21 is considered small and the increase in traffic noise level due to the junction improvement works is less than 1.0 dB(A) or with overall noise level less than the noise criteria predicted at the nearby NSRs (see Appendix 5.14). As no significant or adverse impacts are expected for these junction improvement works, noise mitigation measures are not considered necessary.

Fixed Noise Sources

5.5.9 The planned NSRs within the PDA will be affected by existing fixed noise sources in the vicinity of the PDA. Site visits for the identification of existing fixed noise sources were conducted on 20 August 2018, 22 October 2018 and 29 October 2019 (daytime and night-time). The majority of the fixed noise sources were vehicle repair/washing workshops and warehouses. On-site noise measurement has been conducted for typical operation activities at some of these premises where access is available. The measurement records are provided in Appendix 5.5. Since on-site noise measurement was not feasible at other identified sources due to site access constraints or where full-scaled operation was not available during on-site noise measurement, SWLs have been obtained from noise measurement at a similar facility with reference to approved planning applications. The operation hours of the fixed noise sources have been established based on confirmation from the operators and observation made during the site visits.

5.5.10 The planned fixed noise sources within the PDA include (1) Public Transport Interchange (PTI) locating at SHR Site and HPR Site and (2) a SHR sewage pumping station (SPS) locating at SHR Site. The preliminary design of the ingress and egress locations of the PTIs are constrained by i) site formation level difference between proposed Road L7, ii) clearance requirement to the overhead transmission cables at HPR Site and iii) potential induced traffic impacts near junctions. These PTIs will be designed to avoid direct line-of-sight to the nearby existing and planned NSRs. As the detailed design of the PTIs is not available at this stage while the housing site layout may subject to further change at later stage of the Project, the design measures to screen the line of sight will be confirmed at the detailed design stage of the Project. Mitigation measures to provide screening effect and blockage of direct line of sight such as canopy and hanger wall, erection of solid panels next to the vehicle bays are recommended. These mitigation measures will be reviewed at the later stage of the Project based on the detailed design of the PTIs and the confirmed layout plan of the housing development. In view of the possibility that mechanical ventilation system may be required, assessment of its impact will be address in subsequent sections.

5.5.11 Detailed design of the SHR SPS is not available at this stage. The major noise sources from the SPS would be the operation of sewage pumps, deodorizer fans, mechanically raked bar screens and exhaust fans, based on the DSD’s Design Memorandum. The sound power level of these equipment was referenced from the Project Profile for Yuen Long Kau Hui No. 2 Sewage Pumping Station (EIAO Register No. DIR-173/2008).

5.5.12 A summary of the list of all fixed noise sources identified within the assessment area is given in Table 5.11 with details appended in Appendix 5.5.

Table 5.11 Fixed Noise Source Inventory

ID	Noise Source	Description	Operation Hours
			Daytime/ Evening	Night-time
Existing Noise Sources
FS1	力信	Car Repairing Workshop	Yes	No
FS2	加昌貿易海運	Car Repairing Workshop	Yes	No
FS4	Car Repairing workshop	Car Repairing Workshop	Yes	No
FS5	天輝	Car washing workshop	Yes	No
FS6	東聯汽車維修	Car Repairing Workshop	Yes	No
FS7	恒力	Car Repairing Workshop	Yes	No
FS8	Unnamed car park	Car Repairing Workshop	Yes	No
FS9	Enclosed Workshop	Car Repairing Workshop	Yes	No
FS10	Self-served car washing workshop	Car washing workshop	Yes	No
FS11	榮泰	Car Repairing Workshop	Yes	No
FS12	Calco Industrial Products Ltd.	Car Repairing Workshop	Yes	No
FS13	Car Repairing workshop	Car Repairing Workshop	Yes	No
FS14	Unknown workshop	Unknown Workshop	Yes	No
FS15	CHEP	Storage (with forklift)	Yes	No
FS16	緯力貨倉 (Wai Yim)	Storage (with forklift)	Yes	No
FS17	龍顏 (Lung Ngai)	Car Repairing Workshop	Yes	No
FS18	天隆 (Tin Lung)	Car Repairing Workshop	Yes	No
FS19	隆德 (Lung Tak)	Car Repairing Workshop	Yes	No
FS20	Chuen Fat Marble Tools	Marble Grinding	Yes	No
Planned Noise Sources
PFS-01	Mechanical Ventilation System at PTI-01	PTI at HPR Site	Yes	Yes
PFS-02	Mechanical Ventilation System at PTI-01	PTI at HPR Site	Yes	Yes
PFS-03	Mechanical Ventilation System at PTI-02	PTI at SHR Site	Yes	Yes
PFS-04	Mechanical Ventilation System at PTI-02	PTI at SHR Site	Yes	Yes
PFS-05	SHR SPS	Sewage Pumping Station	Yes	Yes

5.5.13 Upgrading of Tuen Mun Area 54 SPS by replacing the existing 4 nos. of pumps with larger pumping capacity is proposed under this Project. The increase of the pumping capacity is well below the Environmental Permit FEP-01/381/2009 requirement. The sound power level of the new pumps will not be higher than that of the current pumps. As such, the fixed noise assessment findings in the approved EIA Report of the Tuen Mun Area 54 SPS remains valid. No adverse noise impact from the operation of the new pumps are expected. The operator of the Tuen Mun Area 54 SPS (i.e. Drainage Services Department) is required to comply with the requirements stipulated in the Environmental Permit FEP-01/381/2009. Detailed fixed noise assessment is not necessary under this Project.

Rail Noise

5.5.14 The operation of the existing West Rail Line (WRL) and Light Rail Transit (LRT) would pose potential noise impact on the planned NSRs in the vicinity of its alignments and stations, i.e. at SHR Site.

5.6 Construction Noise Impact Assessment

Broad Approach

5.6.1 The assessment of construction noise impacts arising from works other than percussive piling were based on standard acoustic principles and guidelines given in the GW-TM issued under the NCO where appropriate. 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 in descending order of preference.

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

· Other commonly used PME in EPD’s website

· Other EIA reports or measurements taken in other relevant studies.

5.6.2 The approach adopted is summarised as follows:

(i) Devise a typical and realistic construction program as shown in Appendix 5.3;

(ii) Prepare an assumed project-specific equipment inventory, including equipment type, number and utilization rates during any 30 minutes working period within the non-restricted hours without mitigation, that is confirmed by the project engineer to be appropriate and practicable for completing the works within the proposed construction programme, as appended in Appendix 5.4;

(iii) Obtain from GW-TM or other sources mentioned above, the SWL of each PME assumed in the equipment inventory;

(iv) Select representative NSRs for the construction noise impact assessment as shown in Figures 5.10 to 5.15;

(v) Calculate the unmitigated Predicted Noise Level (PNL) based on assumed work zones, notional source positions, together with correction for distance attenuation, in-situ/ inherent screening due to architectural features or existing buildings;

(vi) Calculate the unmitigated overall Corrected Noise Level (CNL) at any NSRs for each month over the entire construction period;

(vii) In the event of noise exceedance, devise necessary mitigation measures including use of typical quiet equipment (e.g. QPME registered by EPD) and/or use of adequate screening by noise barrier/ enclosure as earmarked in the mitigated plant inventory and calculate the mitigated noise impact; and

(viii) Compare the mitigated overall CNL with the noise standards given in Table 5.1 to determine the need for further mitigation.

5.6.3 Noise impact levels due to individual noise sources have been predicted at each NSR after the corrections for distance attenuation and screening effects as the PNL.

PNL_i = SWL_i + C_dist + C_barrier

5.6.4 For any construction activities that will be carried out concurrently, the relevant individual PNLs are then summed logarithmically with correction for façade reflection for the overall impacts (“CNL”) at each individual NSR:

CNL = ∑PNL_i + C_facade

where

· PNL_i = Predicted noise level arising from various individual source after corrections for distance attenuation and screening

· SWL_i = Sound power level of individual construction noise sources

· C _dist = Correction for distance attenuation

· C _barrier = Correction [-5 to -10 dB(A)] for barrier effects due to in-situ screening by obstacles, architectural features or purpose-built noise barrier

· C _façade = Correction [+3 dB(A)] for façade reflection at NSR

· CNL = Corrected overall noise level being logarithmic sum of individual PNLs occurring at the same time together with correction for façade at the NSR

5.6.5 To assess the cumulative impact from concurrent project, the SWL of superstructure construction of Site 4A and Site 5 of Tuen Mun Area 54 was taken from the approved EIA Report of Planning and Development Study of Potential Housing Site in Area 54, Tuen Mun (AEIAR-015/1999).

Prediction and Evaluation of Construction Noise Impacts

Unmitigated Scenario

5.6.6 The predicted unmitigated construction noise levels at representative NSRs were predicted and summarised in Table 5.12 with detailed results presented in Appendix 5.6. There would be exceedances predicted at the majority of NSRs except E19, P7, P8 and P10. Mitigation measures are therefore required.

Table 5.12 Predicted Unmitigated Construction Noise Levels at NSRs

NSR ID	NAP ID		NAP Description	Land Use	Noise Criteria Leq 30-min , dB(A)	Unmitigated Noise Level Leq 30-min , dB(A)	Exceedance, dB(A)
Existing/ Planned NSRs (outside PDA boundary)
E1	E1_CN01		Village House near Villa Pinada	Residential	75	80	5
E2	E2_CN01		Village House near Villa Pinada	Residential	75	80	5
E3	E3_CN01		Village House near Villa Pinada	Residential	75	82	7
E4	E4_CN01		Village House near Realigned Hong Po Road	Residential	75	82	7
E5	E5_CN01		Village House near Realigned Hong Po Road	Residential	75	88	13
E6	E6_CN01		House no.157, Villa Pinada	Residential	75	84	9
E6	E6_CN02		House no.152, Villa Pinada	Residential	75	89	14
E6		E6_CN03	House no.113, Villa Pinada	Residential	75	81	6
E7	E7_CN01		Village House near Villa Pinada	Residential	75	83	8
E8	E8_CN01		Village House near San Hing Tsuen	Residential	75	81	6
E9	E9_CN01		House no. 255, San Hing Tsuen	Residential	75	82	7
E9	E9_CN02		House no. 240, San Hing Tsuen	Residential	75	82	7
E9	E9_CN03		House no. 99, San Hing Tsuen	Residential	75	87	12
E9	E9_CN04		House no. 37, San Hing Tsuen	Residential	75	85	10
E10	E10_CN01		House no. 75, To Yuen Wai	Residential	75	82	7
E10	E10_CN02		Block E Hanlin Court, no. 146 To Yuen Wai	Residential	75	75	-
E11	E11_CN01		TWGHs Yau Tze Tin Memorial College	Educational Institution	70	84	14
					Exam: 65	84	19
E12	E12_CN01		Siu Kei House, Siu Hong Court	Residential	75	85	10
E12	E12_CN02		Siu Shun House, Siu Hong Court	Residential	75	82	7
E13	E13_CN01		House no. 199A, Kei Lun Wai	Residential	75	86	11
E14	E14_CN01		Primary School at TM54 Site 4A (East)	Educational Institution	70	81	11
					Exam: 65	81	16
E15	E15_CN01		Secondary School a TM54 Site 4A (East)	Educational Institution	70	85	15
					Exam: 65	85	20
E16	E16_CN01		Chun Tin House, Yan Tin Estate	Residential	75	83	8
E16		E16_CN02	Yuet Tin House, Yan Tin Estate	Residential	75	81	6
E16		E16_CN03	Luk Tin House, Yan Tin Estate	Residential	75	89	14
E17	E17_CN01		Block 1, Unicorn Garden	Residential	75	87	12
E18	E18_CN01		House no. 272, Tsz Tin Tsuen	Residential	75	87	12
E18	E18_CN02		Village House near no. 151, Tsz Tin Tsuen	Residential	75	87	12
E18		E18_CN03	House no. 136, Tsz Tin Tsuen	Residential	75	78	3
E19	E19_CN01		Block C, Houses no.80 Po Tong Ha	Residential	75	75	-
E20	E20_CN01		Village House near Proposed Road L7	Residential	75	83	8
E21	E21_CN01		Block 1, TM54 Site 1 & 1A	Residential	75	86	11
E22	E22_CN01		Block D, Phase 2, Po Wah Garden	Residential	75	83	8
E23	E23_CN01		Block 1, TM54 Site 5	Residential	75	83	8
E24	E24_CN01		TM54 Site 3/4 (West)	Residential	75	79	4
E26	E26_CN01		Block 9, Po Tin Estate	Residential	75	79	4
E26	E26_CN02		Block 1, Po Tin Estate	Residential	75	84	9
E27	E27_CN01		Tower 1, Goodrich Garden	Residential	75	83	8
E28	E28_CN01		Eight Regency	Residential	75	78	3
E29	E29_CN01		Siu Pong Court	Residential	75	82	7
E30	E30_CN01		C.C.C. Mong Wong Far Yok Memorial Primary School	Educational Institution	70	85	15
					Exam: 65	85	20
E31	E31_CN01		SRBCEPSA Ho Sau Ki School	Educational Institution	70	83	13
					Exam: 65	83	18
E32	E32_CN01		Siu Kwai Court	Residential	75	82	7
E33	E33_CN01		Fung Shan Temple	Place of Public Worship	70 ^[2]	78	8
E34	E34_CN01		Po Leung Kuk Horizon East Primary School	Educational Institution	70	73	3
					Exam: 65	73	8
Planned NSRs (within PDA boundary)
P7	P7_CN01		Block 7, San Hing Road Site	Residential	75	72	-
P8	P8_CN01		Block 8, San Hing Road Site	Residential	75	72	-
P10	P10_CN01		School at San Hing Road Site	Education Institution	70	64	-
					Exam: 65	64	-
P11	P11_CN01		School at San Hing Road Site	Education Institution	70	67	-
					Exam: 65	67	2
P12	P12_CN01		Block 1, San Hing Road Site Extension	Residential	75	78	3
P13	P13_CN01		Block 2, San Hing Road Site Extension	Residential	75	80	5
Note: [1] Predicted noise levels which exceeded the corresponding criteria are shown as bold and underlined. [2] Construction noise criteria for place of public worship is not specified in the EIAO-TM. The more stringent criteria of 70 dB(A) is adopted as a conservative approach.

Mitigation Measures

5.6.7 The predicted noise levels show that the unmitigated construction noise impacts would exceed the daytime noise criteria. Mitigation measures are therefore required. The following mitigation measures have been considered:

· Adoption of quieter construction method;

· Use of quality PMEs (QPMEs) with lower SWL;

· Use of movable noise barriers, noise insulating fabric and noise enclosures to screen noise from relatively static PMEs; and

· Good site practices to limit noise emissions at source

Adoption of Quieter Construction Method

5.6.8 Instead of traditional construction method as presented under the unmitigated scenario, a quieter construction method is recommended for site clearance works. Non-Explosive Chemical Expansion Agent (Soundless Chemical Demolition Agent) is proposed to be adopted to replace the use of hand-held breaker in site clearance. Unlike explosive chemicals or expansive compounds, Soundless Chemical Demolition Agents do not produce vibrations, and hence, they are completely quiet and safe to use. When the chemical agent is properly used, it does not cause significant noise, ground vibration, fly rock, gas, dust or any other environmental pollution. This soundless chemical demolition agent is used for concrete demolition or rock breaking and much quieter than traditional breakers. According to the information provided by EPD, the sound pressure level (SPL) of the operation of the Soundless Chemical Demolition Agent ranges from 60 to 65 dB(A) at 7m from equipment, i.e. the sound power level (SWL) of the operation is 85 to 90dB(A). 90dB(A) has been adopted in this assessment as the conservative approach.

Use of Quality PMEs

5.6.9 Use of QPMEs with lower SWL is recommended to reduce the noise impacts for the Development. The list of proposed QPMEs and their respective SWLs are presented in Table 5.13 below.

Table 5.13 Recommended List of QPME and their Sound Power Levels

Regular PME	Description	SWL, dB(A)	QPME on EPD’s website	Description	SWL, dB(A)
CNP 001	Air Compressor	100	EPD-07503	Air Compressor	92
CNP 004	Asphalt paver	109	EPD-05557	Asphalt paver	105
CNP 081	Excavator/ Loader, wheeled/ tracked	112	EPD-05870	Excavator, wheeled/ tracked	93
			EPD-09062	Excavator, wheeled/ tracked	98
CNP 101	Generator, standard	108	EPD-07222	Generator	83
CNP 048	Mobile Crane	112	EPD-05797	Crane, mobile	91
CNP 185	Roller	108	EPD-06886	Road Roller	97

Use of Noise Insulating Fabric

5.6.10 Noise insulating fabric can be adopted for certain PME such as piling machine. According to the approved Tsim Sha Tsui Station Northern Subway EIA Report (Register No.: AEIAR-127/2008), provided that the noise insulating fabrics are lapped such that there are no openings or gaps on the joints, a noise reduction of 10 dB(A) can be achieved.

Use of Movable Barriers and Noise Enclosures

5.6.11 Use of movable noise barriers and noise enclosures 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 Guidance Note on Preparation of Construction Noise Impact Assessment GN No.9/2010, noise reduction of 5dB(A) and 10dB(A) can be achieved by direct application of the noise barriers to movable and stationary plant, respectively. Movable noise enclosure made up of plywood is proposed to surround certain static PME. The internal wall of the enclosure should be laid with sound absorbent such as mineral wool. Without direct view of the noisy part of the enclosed PME from NSR, this design can achieve 15dB(A) reduction. The schematic diagrams for typical construction noise barrier and noise enclosure are provided in Appendix 5.7.

5.6.12 The application of noise insulating fabrics, movable barriers and noise enclosures for PME and their respective reductions in noise levels are summarised in Table 5.14.

Table 5.14 Summary of Movable Noise Barrier, Noise Insulating Fabric and Enclosures Adopted for PMEs

PME	Noise Mitigation Measures	Attenuation, dB(A)
Air Compressor	Enclosure	-15
Asphalt paver	Noise Barrier	-5
Bar Bender and Cutter (electric)	Noise Barrier	-10
Compactor, Vibratory	Noise Barrier	-5
Concrete Lorry Mixer	Noise Barrier	-5
Concrete Pump	Enclosure	-15
Drill Rig, rotary type (Diesel)	Noise Barrier	-10
Dump Truck, 5.5 tonne < GVW ≤ 38 tonne	Noise Barrier	-5
Excavator/ Loader, wheeled/ tracked	Noise Barrier	-5
Generator, standard	Enclosure	-15
Grout Mixer	Enclosure	-15
Grout Pump	Enclosure	-15
Lorry with Grab, 5.5 tonne < GVW ≤ 38 tonne	Noise Barrier	-5
Mobile Crane	Noise Barrier	-5
Piling, earth auger, auger	Noise insulating fabric	-10
Piling, grab and chisel	Noise insulating fabric	-10
Piling, Large Bored Pile	Noise Barrier	-5
Piling, oscillator	Noise insulating fabric	-10
Piling, vibrating hammer	Noise insulating fabric	-10
Poker, vibratory, hand-held (electric)	Noise Barrier	-5
Roller	Noise Barrier	-5
Saw, circular, wood	Noise Barrier	-5
Ventilation Fan	Noise Barrier	-10
Water Pump (electric)	Noise Barrier	-10
Welding Plant	Noise Barrier	-5

5.6.13 The future contractor will be required through contract specifications to provide and implement sufficient direct mitigation measures with reference to the recommendations in this EIA or the future detailed design to achieve acceptable noise levels on the nearby NSRs. The future contractor will also be required to prepare a construction noise management plan with reference to Section 8 and Annex 21 of the EIAO-TM as well as this EIA Report and EM&A Manual. The construction management plan shall identify the inventory of noise sources and assess the effectiveness and practically of all mitigation measures considered during the design and tendering stage to minimize the construction noise impact. The construction management plan should confirm and summarise the mitigation measures to be implemented for the Project, and shall be submitted six months prior to the commencement of construction.

Good Site Practices

5.6.14 It is also recommended to implement good site practices as far as practicable so as to further reduce the noise impact at NSRs. Since the effect of the good site practices could not be quantified, the mitigated noise levels calculated in the subsequent sections have not taken into account this effect. The following good site practices should be followed during the construction of the Development:

· Only well-maintained plant should be operated on-site and plants should be serviced regularly during the construction period;

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

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

· Use of site hoarding as a noise barrier to screen noise at low level NSRs;

· Machines and plant that may be in intermittent use should be shut down between works periods or should be throttled down to a minimum; and

· Any material stockpiles and other structures should be effectively utilized, wherever practicable, to screen the noise from on-site construction activities.

Mitigated Scenario

5.6.15 The equipment inventory under the mitigated scenario, that is confirmed by the project engineer to be appropriate and practicable for completing the works within the proposed construction programme, is appended in Appendix 5.8. The mitigated construction noise levels at representative NSRs are summarised in Table 5.15 below. Detailed results are presented in Appendix 5.9.

Table 5.15 Predicted Mitigated Construction Noise Levels at NSRs

NSR ID	NAP ID	NAP Description	Land Use	Noise Criteria Leq 30-min , dB(A)	Mitigated Noise Level Leq 30-min , dB(A)	Exceedance, dB(A)
Existing/ Planned NSRs (outside PDA boundary)
E1	E1_CN01	Village House near Villa Pinada	Residential	75	67	-
E2	E2_CN01	Village House near Villa Pinada	Residential	75	67	-
E3	E3_CN01	Village House near Villa Pinada	Residential	75	69	-
E4	E4_CN01	Village House near Realigned Hong Po Road	Residential	75	69	-
E5	E5_CN01	Village House near Realigned Hong Po Road	Residential	75	75	-
E6	E6_CN01	House no.157, Villa Pinada	Residential	75	71	-
E6	E6_CN02	House no.152, Villa Pinada	Residential	75	75	-
E6	E6_CN03	House no.113, Villa Pinada	Residential	75	67	-
E7	E7_CN01	Village House near Villa Pinada	Residential	75	68	-
E8	E8_CN01	Village House near San Hing Tsuen	Residential	75	67	-
E9	E9_CN01	House no. 255, San Hing Tsuen	Residential	75	68	-
E9	E9_CN02	House no. 240, San Hing Tsuen	Residential	75	69	-
E9	E9_CN03	House no. 99, San Hing Tsuen	Residential	75	73	-
E9	E9_CN04	House no. 37, San Hing Tsuen	Residential	75	71	-
E10	E10_CN01	House no. 75, To Yuen Wai	Residential	75	66	-
E10	E10_CN02	Block E Hanlin Court, no. 146 To Yuen Wai	Residential	75	60	-
E11	E11_CN01	TWGHs Yau Tze Tin Memorial College	Educational Institution	70	70	-
				Exam: 65	70	5
E12	E12_CN01	Siu Kei House, Siu Hong Court	Residential	75	71	-
E12	E12_CN02	Siu Shun House, Siu Hong Court	Residential	75	67	-
E13	E13_CN01	House no. 199A, Kei Lun Wai	Residential	75	72	-
E14	E14_CN01	Primary School at TM54 Site 4A (East)	Educational Institution	70	67	-
				Exam: 65	67	2
E15	E15_CN01	Secondary School at TM54 Site 4A (East)	Educational Institution	70	70	-
				Exam: 65	70	5
E16	E16_CN01	Chun Tin House, Yan Tin Estate	Residential	75	70	-
E16	E16_CN02	Yuet Tin House, Yan Tin Estate	Residential	75	67	-
E16	E16_CN03	Luk Tin House, Yan Tin Estate	Residential	75	75	-
E17	E17_CN01	Block 1, Unicorn Garden	Residential	75	73	-
E18	E18_CN01	House no. 272, Tsz Tin Tsuen	Residential	75	73	-
E18	E18_CN02	Village House near no. 151, Tsz Tin Tsuen	Residential	75	74	-
E18	E18_CN03	House no. 136, Tsz Tin Tsuen	Residential	75	64	-
E19	E19_CN01	Block C, Houses no.80 Po Tong Ha	Residential	75	60	-
E20	E20_CN01	Village House near Proposed Road L7	Residential	75	67	-
E21	E21_CN01	Block 1, TM Area 54 Site 1 & 1A	Residential	75	70	-
E22	E22_CN01	Block D, Phase 2, Po Wah Garden	Residential	75	68	-
E23	E23_CN01	Block 1, TM Area 54 Site 5	Residential	75	67	-
E24	E24_CN01	TM5 Area 4 Site 3/4 (West)	Residential	75	66	-
E26	E26_CN01	Block 9, Po Tin Estate	Residential	75	67	-
E26	E26_CN02	Block 1, Po Tin Estate	Residential	75	69	-
E27	E27_CN01	Tower 1, Goodrich Garden	Residential	75	68	-
E28	E28_CN01	Eight Regency	Residential	75	63	-
E29	E29_CN01	Siu Pong Court	Residential	75	67	-
E30	E30_CN01	C.C.C. Mong Wong Far Yok Memorial Primary School	Educational Institution	70	70	-
				Exam: 65	70	5
E31	E31_CN01	SRBCEPSA Ho Sau Ki School	Educational Institution	70	68	-
				Exam: 65	68	3
E32	E32_CN01	Siu Kwai Court	Educational Institution	75	67	-
E33	E33_CN01	Fung Shan Temple	Place of Public Worship	70 ^[2]	64	-
E34	E34_CN01	Po Leung Kuk Horizon East Primary School	Educational Institution	70	69	-
				Exam: 65	69	4
Planned NSRs (within PDA boundary)
P7	P7_CN01	Block 7, San Hing Road Site	Residential	75	58	-
P8	P8_CN01	Block 8, San Hing Road Site	Residential	75	59	-
P10	P10_CN01	School at San Hing Road Site	Education Institution	70	51	-
				Exam: 65	51	-
P11	P11_CN01	School at San Hing Road Site	Education Institution	70	54	-
				Exam: 65	54	-
P12	P12_CN01	Block 1, San Hing Road Site Extension	Residential	75	65	-
P13	P13_CN01	Block 2, San Hing Road Site Extension	Residential	75	67	-
Note: [1] Predicted noise levels which exceeded the corresponding criteria are shown as bold and underlined. [2] Construction noise criteria for place of public worship is not specified in the EIAO-TM. The more stringent criteria of 70 dB(A) is adopted as a conservative approach.

5.6.16 With the implementation of the proposed mitigation measures, it is anticipated that adverse construction noise impact is not expected at the representative NSRs, except during examination period of TWGHs Yau Tze Tin Memorial College (E11), Primary School at TM Area 54 Site 4A (East) (E14), Secondary School at TM Area 54Site 4A (East) (E15), C.C.C. Mong Wong Far Yok Memorial Primary School (E30), SRBCEPSA Ho Sau Ki School (E31), and Po Leung Kuk Horizon East Primary School (E34). The critical construction activities causing the exceedance is summarised in Table 5.16. It is recommended that the works area of these critical construction activities shall be restricted within close proximity to these schools during their examination period. The recommended minimum separation distance between these critical construction activities and the schools during examination period is shown in Table 5.16. The critical construction activity that leads to the exceedance at E34_CN01 during examination period is the works from the concurrent project at TM Area 54 Site 5. The predicted noise level from works of the Project alone is 55 dB(A) at E34_CN01, which is well below the criterion for school examination period and will not contribute to adverse cumulative impact with works of TM Area 54 Site 5. It is also expected that the contractor of works of TM Area 54 Site 5 will implement appropriate mitigation measures to ensure compliance of noise impact to its nearby NSRs.

Table 5.16 Recommended Minimum Separation Distance between Schools and Critical Works Area during School Examination Period

NAP	Description	Critical Construction Activities lead to the Exceedance		Minimum Separation between Schools and Critical Works Area during Examination Period, m
E11_CN01	TWGHs Yau Tze Tin Memorial College	B5	Construction of Associated Rising Main	79
E14_CN01	Primary School at TM Area 54 Site 4A (East)	H7	Infrastructure Works along Tsz Tin Road	37
E15_CN01	Secondary School a TM Area 54 Site 4A (East)	B6	Upgrading Works of Existing Sewers & Modification of TM54 SPS	30
E30_CN01	C.C.C. Mong Wong Far Yok Memorial Primary School	H6	Infrastructure Works along Ming Kum Road	32
E31_CN01	SRBCEPSA Ho Sau Ki School	H6	Infrastructure Works along Ming Kum Road	32

5.6.17 With the implementation of maintaining a minimum separation distance between the critical construction activities and the schools during examination period, no adverse construction noise impact from the Project is anticipated at these schools. The detailed separation requirements and the predicted construction noise levels at these schools are presented in Appendix 5.10. The contractors shall liaise with the schools to confirm their examination period when planning their work sequence.

Evaluation of Residual Construction Noise Impacts

5.6.18 With the implementation of the proposed mitigation measures described above, the predicted construction noise levels at the representative NSRs would comply with the relevant criteria. Therefore, residual noise impacts are not anticipated.

5.7 Road Traffic Noise Impact Assessment

Broad Approach

5.7.1 The Road Noise Module 2.7.2 of Noise Map Enterprise Edition, has been used to evaluate traffic noise in order to assess the road traffic noise impact from project roads and other roads within the assessment area on the nearby existing and planned NSRs, as well as whether the proposed junction improvements would lead to significant traffic noise impact to nearby existing NSRs. The model adopts the methodology in the Calculation of Road Traffic Noise (CRTN) developed by the UK Department of Transport. The road traffic noise would be presented in terms of noise levels exceeded for 10% of the one-hour period for the hour having the peak traffic flow L₁₀ (1hour) under various traffic forecast scenarios.

5.7.2 Traffic flows of the roads within 300 m from the PDA boundary as well as in vicinity of the junction proposed for improvement have been forecasted by the traffic consultant of the Project. The information on traffic volume and percentage of heavy vehicle for Year 2048, which would be the year of maximum traffic projection within the 15 years from Year 2033, the expected full occupation year of the Development has been obtained. As such the traffic noise impact assessment for Year 2048 represents a worst-case scenario. The traffic forecast of Year 2024, ie before construction of project roads, has also been obtained to represent the prevailing year of the Development. Details of the traffic forecast for the traffic noise assessment as shown in Appendix 5.11. Record of endorsement of traffic data by the Transport Department is provided in Appendix 4.10.

5.7.3 The road networks are classified into the following categories for the purpose of the road traffic noise assessment, as shown in Figure 5.25:

· Project Road – all public roads within the PDA, including the realigned Hong Po Road, proposed Road L7, proposed or modified access road within the HPR Site, SHR Site Extension and SHR Site and modified road at junction J13; and

· Other Road – the existing open roads and planned open roads (committed by other project proponent) within 300 m of the assessment area.

5.7.4 According to the EIA Ordinance Guidance Note No. 12/2010, direct mitigation measures should be considered or proposed on the road projects if there would be adverse environmental impact. If the NSRs are affected by noise from the road projects and other roads, direct mitigation measures are required to reduce the noise from the concerned road projects to a level that it is not higher than the standard; and has no significant contribution to the overall noise from other roads, if the cumulative noise level, i.e. noise from the road project together with other roads, exceeds the standard.

5.7.5 Upon exhausting all direct mitigation measures, indirect mitigation measures in the form of window insulation and air-conditioning may be provided to address the noise impact. To be eligible for indirect mitigation measures, all the following criteria must be fulfilled:

· The predicted overall noise level from the road project together with other traffic noise in the vicinity is above the specified noise level (e.g. 70 dB(A) for domestic premises and 65 dB(A) for educational institutions, all in L10(1hr))

· 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; and

· the contribution to the increase in the predicted overall noise level from the road project must be at least 1.0 dB(A)

5.7.6 Record of existing noise barriers/enclosures along roads within the assessment area have been obtained from the Highways Department and CEDD while record of the proposed noise barriers along roads planned under Tuen Mun Area 54 Development have been obtained from CEDD. These barriers have been included in the unmitigated scenario. The existing and planned roadside noise mitigation measures adopted in the traffic noise assessment are shown in Figure 5.26.

Prediction and Evaluation of Road Traffic Noise Impact

Unmitigated Scenario – Existing NSRs and Planned NSRs (Outside PDA) Affected by Roads Within the PDA

5.7.7 The predicted road traffic noise levels at each representative existing and planned NSR and NAP (outside PDA) affected by roads within the PDA under unmitigated scenario are presented in Appendix 5.12 and Appendix 5.13, for AM and PM peak hour respectively. Results revealed that worse road traffic noise impact would generally occur in AM peak hour. The results for AM peak hour are summarised in Table 5.17. While the noise exceedance at some existing NSRs are mainly due to noise from other roads (including roads implemented by Tuen Mun Area 54 Development), there would be exceedances at some existing NSRs facing Tsing Lun Road, realigned Hong Po Road, access road to HPR Site and Ng Lau Road, which would be dominated Project road exceeds the noise standard or with noise contribution from Project roads causing overall traffic noise level, which exceeds the standard, to increase by 1.0 dB(A). Therefore, direct mitigation measures would be required at the Project roads such that the predicted noise level at these NSRs would comply with the noise criteria.

Unmitigated Scenario –Planned NSRs (Within PDA)

5.7.8 The predicted road traffic noise levels at each representative planned NSR and NAP within the PDA under unmitigated scenario are detailed in Appendix 5.12 and Appendix 5.13 for AM and PM peak hour, respectively. The results revealed that worse road traffic noise impact would generally occur in AM peak hour. The unmitigated road traffic noise levels at AM peak hour is presented in Table 5.18. There would be exceedances for some planned NSRs at SHR Site facing Tsing Lun Road, realigned Hong Po Road, slip road to San Hing Road, slip road to Ng Lau Road and Castle Peak Road. Exceedances are also predicted at the planned NSRs at HPR Site facing the access road to HPR Site. Therefore, direct mitigation measures would be required to alleviate the road traffic noise impact.

5.7.9 Exceedances at the planned schools at SHR Site are also predicted. The exceedances are mainly due to noise from the realigned Hong Po Road and San Hing Road. Mitigation measures would be required to alleviate adverse road traffic noise impact.

Table 5.17 Predicted Unmitigated Road Traffic Noise Impact (AM Peak) at Existing and Planned NSRs (Outside the PDA) Affected by Roads within the PDA

NSR	NAP ^[1]	Description	Criteria, L10 1hr dB(A)	Noise Impact, L10 1hr dB(A) ^[2]			Project Road Contribution, dB(A)	Mitigation Measures Required [Y/N]
				Other Roads [A]	Project Roads [B]	Overall [C]
Existing / Planned NSRs (outside PDA boundary)
E1	E1_TN01	Village House near Villa Pinada	70	26	35	35	9.2	N
E2	E2_TN01	Village House near Villa Pinada	70	44	61	61	17.3	N
E3	E3_TN01	Village House near Villa Pinada	70	35-39	65	65	26.2 – 29.8	N
E4	E4_TN01	Village House near Realigned Hong Po Road	70	50	71	71	21.3	Y
E5	E5_TN01	Village House near Realigned Hong Po Road	70	50	74	74	23.5	Y
E7	E7_TN01	Village House near Villa Pinada	70	45	65	65	19.9 – 20.2	N
E9	E9_TN01	House no. 99, San Hing Tsuen	70	57-59	56	60-61	1.9 – 2.4	N
E9	E9_TN02	House no. 37, San Hing Tsuen	70	73-74	61	73-74	0.2 – 0.3	N
E9	E9_TN03	House no. 96, San Hing Tsuen	70	57-60	39-42	57-60	0.0 – 0.1	N
E9	E9_TN04	House no. 102, San Hing Tsuen	70	63	58	64	1.2 – 1.3	N
E9	E9_TN05	House no. 77, San Hing Tsuen	70	63	56	64	0.7 – 0.8	N
E9	E9_TN06	House no. 271, San Hing Tsuen	70	58-59	57	61	2.4 – 2.5	N
E11	E11_TN01	TWGHs Yau Tze Tin Memorial College	65	75-76	67	76	0.5 – 0.6	Y
E11	E11_TN02	TWGHs Yau Tze Tin Memorial College	65	77	62-64	77	0.1 – 0.2	N
E12	E12_TN04	Siu Ning House, Siu Hong Court	70	74-75	54-62	74-75	0.0 – 0.3	N
E16	E16_TN02	Chun Tin House, Yan Tin Estate	70	62-73	48-62	62-73	0.1 – 0.5	N
E16	E16_TN03	Chun Tin House, Yan Tin Estate	70	51-52	67-68	67-68	15.6 – 16.9	N
E16	E16_TN04	Chun Tin House, Yan Tin Estate	70	60-68	68-69	68-72	3.6 – 8.1	Y
E16	E16_TN05	Chun Tin House, Yan Tin Estate	70	58-73	60-66	62-74	0.7 – 4.3	Y
E16	E16_TN06	Yat Tin House, Yan Tin Estate	70	65-74	55-62	65-74	0.3 – 0.6	N
E18	E18_TN01	House no. 272, Tsz Tin Tsuen	70	56-57	75	75	18.0 – 18.7	Y
E18	E18_TN02	House no. 285, Tsz Tin Tsuen	70	34-41	69	69	27.3 – 34.7	N
E18	E18_TN03	House no. 136, Tsz Tin Tsuen	70	44	67	67	23.4	N
E18	E18_TN04	Village House near no. 151 Tsz Tin Tsuen	70	53	74	74	21.6	Y
E18	E18_TN05	House no. 271, Tsz Tin Tsuen	70	56	74	74	17.6 – 18.2	Y
E18	E18_TN06	House no. 274, Tsz Tin Tsuen	70	48-52	72	72	20.5 – 24.6	Y
E19	E19_TN01	House no. 93, Po Tong Ha	70	31-36	64	64	28.8 – 33.3	N
E19	E19_TN02	Block F, Houses no.80, Po Tong Ha	70	32-40	64	64	24.0 – 32.7	N
E20	E20_TN01	Village House near Proposed Road L7	70	40	67	67	27.2	N
E21	E21_TN01	Block 3, TM54 Site 1 & 1A	70	28-30	64-67	64-67	35.3 – 37.1	N
E21	E21_TN02	Block 2, TM54 Site 1 & 1A	70	45-47	64-69	64-69	18.6 – 21.9	N
E21	E21_TN03	Block 1, TM54 Site 1 & 1A	70	35-39	63-69	63-69	28.3 – 30.1	N
E22	E22_TN01	Block F, Phase 2, Po Wah Garden	70	72	64	72	0.7	N
E22	E22_TN02	Block D, Phase 2, Po Wah Garden	70	71	61-62	71	0.5	N
E23	E23_TN01	TM54 Site 5	70	63-68	59-69	65-71	1.5 – 3.9	Y
E23	E23_TN02	TM54 Site 5	70	61-64	65-71	67-72	5.2 – 8.3	Y
E23	E23_TN03	TM54 Site 5	70	68-71	64-68	69-73	1.3 – 1.9	Y
E24	E24_TN01	TM54 Site 3/4 (West)	70	62-69	60-67	64-71	2.0 – 2.4	Y
E24	E24_TN02	TM54 Site 3/4 (West)	70	67-70	65-68	69-72	2.3 – 2.6	Y
E24	E24_TN03	TM54 Site 3/4 (West)	70	65-71	61-68	66-72	1.6 – 1.8	Y
E24	E24_TN04	TM54 Site 3/4 (West)	70	69-72	61-65	70-72	0.4 – 1.0	Y
E33	E33_TN01	Fung Shan Temple	65	74	64	74	0.4	N
Note: [1] The assessment only includes NSRs which rely on opened windows for ventilation. [2] Bolded values denote exceedance of the relevant noise criteria.

Table 5.18 Predicted Unmitigated Road Traffic Noise Impact (AM Peak) at Planned NSRs (Within the PDA)

NSR	NAP ^[1]	Description	Criteria, L10 1hr dB(A)	Overall Noise Impact, L10 1hr dB(A) ^[2]	Mitigation Measures Required [Y/N]
P1	P1_TN01	Block 1, San Hing Road Site	70	69-71	N
P1	P1_TN02	Block 1, San Hing Road Site	70	68-69	N
P1	P1_TN03	Block 1, San Hing Road Site	70	75-77	Y
P1	P1_TN04	Block 1, San Hing Road Site	70	74-75	Y
P1	P1_TN05	Block 1, San Hing Road Site	70	74-75	Y
P1	P1_TN06	Block 1, San Hing Road Site	70	75-76	Y
P1	P1_TN07	Block 1, San Hing Road Site	70	75-76	Y
P1	P1_TN08	Block 1, San Hing Road Site	70	76-78	Y
P2	P2_TN01	Block 2, San Hing Road Site	70	71-72	Y
P2	P2_TN02	Block 2, San Hing Road Site	70	70-71	Y
P2	P2_TN03	Block 2, San Hing Road Site	70	73-75	Y
P2	P2_TN04	Block 2, San Hing Road Site	70	74-76	Y
P2	P2_TN05	Block 2, San Hing Road Site	70	59-64	N
P2	P2_TN06	Block 2, San Hing Road Site	70	63-67	N
P2	P2_TN07	Block 2, San Hing Road Site	70	55-62	N
P2	P2_TN08	Block 2, San Hing Road Site	70	55-59	N
P3	P3_TN01	Block 3, San Hing Road Site	70	64-68	N
P3	P3_TN02	Block 3, San Hing Road Site	70	65-70	N
P3	P3_TN03	Block 3, San Hing Road Site	70	66-67	N
P3	P3_TN04	Block 3, San Hing Road Site	70	63-64	N
P4	P4_TN01	Block 4, San Hing Road Site	70	67-71	Y
P4	P4_TN02	Block 4, San Hing Road Site	70	68-72	Y
P4	P4_TN03	Block 4, San Hing Road Site	70	63-65	N
P4	P4_TN04	Block 4, San Hing Road Site	70	64-66	N
P4	P4_TN05	Block 4, San Hing Road Site	70	59-60	N
P4	P4_TN06	Block 4, San Hing Road Site	70	60-61	N
P5	P5_TN01	Block 5, San Hing Road Site	70	57-58	N
P5	P5_TN02	Block 5, San Hing Road Site	70	57-58	N
P5	P5_TN03	Block 5, San Hing Road Site	70	42-64	N
P6	P6_TN01	Block 6, San Hing Road Site	70	59-61	N
P6	P6_TN02	Block 6, San Hing Road Site	70	57-60	N
P6	P6_TN03	Block 6, San Hing Road Site	70	56-60	N
P7	P7_TN01	Block 7, San Hing Road Site	70	47-50	N
P7	P7_TN02	Block 7, San Hing Road Site	70	51-54	N
P7	P7_TN03	Block 7, San Hing Road Site	70	54-55	N
P7	P7_TN04	Block 7, San Hing Road Site	70	53-54	N
P8	P8_TN01	Block 8, San Hing Road Site	70	61-63	N
P8	P8_TN02	Block 8, San Hing Road Site	70	62-63	N
P8	P8_TN03	Block 8, San Hing Road Site	70	53-56	N
P8	P8_TN04	Block 8, San Hing Road Site	70	54-56	N
P9	P9_TN01	Block 9, San Hing Road Site	70	66-68	N
P9	P9_TN02	Block 9, San Hing Road Site	70	66-68	N
P9	P9_TN03	Block 9, San Hing Road Site	70	65-68	N
P9	P9_TN04	Block 9, San Hing Road Site	70	65-68	N
P10	P10_TN01	School at San Hing Road Site	65	64-65	N
P10	P10_TN02	School at San Hing Road Site	65	63-64	N
P10	P10_TN03	School at San Hing Road Site	65	60-61	N
P11	P11_TN01	School at San Hing Road Site	65	65-66	Y
P11	P11_TN02	School at San Hing Road Site	65	65	N
P12	P12_TN01	Block 1, San Hing Road Site Extension	70	66-68	N
P12	P12_TN02	Block 1, San Hing Road Site Extension	70	66-68	N
P13	P13_TN01	Block 2, San Hing Road Site Extension	70	59-61	N
P13	P13_TN02	Block 2, San Hing Road Site Extension	70	59-61	N
P14	P14_TN01	School at San Hing Road Site Extension	65	63-64	N
P14	P14_TN02	School at San Hing Road Site Extension	65	64-65	N
P15	P15_TN01	School at San Hing Road Site Extension	65	59	N
P15	P15_TN02	School at San Hing Road Site Extension	65	60-61	N
P16	P16_TN01	School at San Hing Road Site Extension	65	57-58	N
P17	P17_TN01	Block 1, Hong Po Road Site	70	65-69	N
P17	P17_TN02	Block 1, Hong Po Road Site	70	65-69	N
P17	P17_TN03	Block 1, Hong Po Road Site	70	59-61	N
P18	P18_TN01	Block 2, Hong Po Road Site	70	59-60	N
P18	P18_TN02	Block 2, Hong Po Road Site	70	58-60	N
P19	P19_TN01	Block 10, Hong Po Road Site	70	63-65	N
P19	P19_TN02	Block 10, Hong Po Road Site	70	62-65	N
P20	P20_TN01	Block 11, Hong Po Road Site	70	60-62	N
P20	P20_TN02	Block 11, Hong Po Road Site	70	61-63	N
P20	P20_TN03	Block 11, Hong Po Road Site	70	64-68	N
P20	P20_TN04	Block 11, Hong Po Road Site	70	65-68	N
SHRW	SHRW_TN01	Welfare facility at San Hing Road Site	55/65 ^[3]	64	- ^[4]
SHRW	SHRW_TN02	Welfare facility at San Hing Road Site	55/65 ^[3]	67	Y
SHRW	SHRW_TN03	Welfare facility at San Hing Road Site	55/65 ^[3]	70	Y
SHRW	SHRW_TN04	Welfare facility at San Hing Road Site	55/65 ^[3]	71	Y
SHRW	SHRW_TN05	Welfare facility at San Hing Road Site	55/65 ^[3]	74	Y
SHRW	SHRW_TN06	Welfare facility at San Hing Road Site	55/65 ^[3]	73	Y
SHRW	SHRW_TN07	Welfare facility at San Hing Road Site	55/65 ^[3]	64	- ^[4]
SHRW	SHRW_TN08	Welfare facility at San Hing Road Site	55/65 ^[3]	62	- ^[4]
HPRW	HPRW_TN01	Welfare facility at Hong Po Road Site	55/65 ^[3]	57	- ^[4]
HPRW	HPRW_TN02	Welfare facility at Hong Po Road Site	55/65 ^[3]	60	- ^[4]
HPRW	HPRW_TN03	Welfare facility at Hong Po Road Site	55/65 ^[3]	63	- ^[4]
HPRW	HPRW_TN04	Welfare facility at Hong Po Road Site	55/65 ^[3]	66	Y
HPRW	HPRW_TN05	Welfare facility at Hong Po Road Site	55/65 ^[3]	67	Y
HPRW	HPRW_TN06	Welfare facility at Hong Po Road Site	55/65 ^[3]	64	- ^[4]
HPRW	HPRW_TN07	Welfare facility at Hong Po Road Site	55/65 ^[3]	62	- ^[4]
HPRW	HPRW_TN08	Welfare facility at Hong Po Road Site	55/65 ^[3]	60	- ^[4]
HPRW	HPRW_TN09	Welfare facility at Hong Po Road Site	55/65 ^[3]	59	- ^[4]
Note: [1] The assessment only includes NSRs which rely on opened windows for ventilation. [2] Bolded values denote exceedance of the relevant noise criteria. [3] The type of welfare use cannot be confirmed at this stage and the criteria for different use vary. According to the EIAO-TM, 55 dB(A) applies to diagnostic rooms and wards in clinics, convalescences and home for the aged while 65 dB(A) applies to educational institutions, including kindergartens and nurseries, that rely on openable windows for ventilation. [4] The requirement for mitigation measures depend on the type of welfare use to be adopted (see Section 5.7.11).

5.7.10 The total number of dwellings, classrooms and other NSRs that will be exposed to noise impact exceeding the criteria set out in Annex 5 of the EIAO-TM under unmitigated scenario is summarised in Table 5.19.

Table 5.19 Number of Residential Dwellings/Classrooms/Other NSRs Exceeding the Respective Road Traffic Noise Criteria under Unmitigated Scenario

Location	Existing NSRs and Planned NSRs outside PDA			Planned NSRs within PDA
	No. of Dwellings ^[1]	No. of Classrooms ^[2]	Others	No. of Dwellings ^[1]	No. of Classrooms ^[2]	Others
Within PDA	-	-	-	842	15	7 ^[4]
Vicinity of PDA	511	24	1 ^[3]	-	-	-
Note: [1] For high-rise building, 1 NAP is assumed to represent 2 dwellings per floor while for village house, 1 NAP is assumed to represent 1 dwelling per floor. [2] 1 NAP is assumed to represent 3 classrooms per floor. E11_TN02 is school hall and this NAP is considered to represent 1 classroom per floor. [3] Temple [4] Welfare uses

5.7.11 Depending on the proposed type of welfare use, exceedance of noise criteria is expected at some façades of the welfare facility facing the realigned Hong Po Road and access road in HPR Site if noise sensitive uses with openable window for ventilation is proposed. If noise sensitive uses will be planned at these facades, mitigation measures will be required.

Mitigation Measures for Road Traffic Noise Impact

5.7.12 The tentative layout plan of the PDA has already incorporated design measures to minimise road traffic noise impact. Non-noise sensitive uses (e.g. PTIs and SPS) are located along proposed Road L7 and the realigned Hong Po Road to provide noise screening to the planned NSRs at HPR Site and SHR Site.

5.7.13 With the above design measures incorporated in the tentative layout plan of the PDA, exceedance of noise criteria at existing NSRs, planned NSRs outside the PDA and planned NSRs within the PDA are still predicted in the unmitigated scenario. Noise mitigation measures would therefore be required to alleviate the potential road traffic noise impact. As the predicted unmitigated noise levels revealed that the AM peak hour generally represented the worst-case and hence was used for assessing the direct mitigation measures required.

5.7.14 Mitigation measures for NSRs E23 and E24 near junction improvement works at J13 will be required to alleviate the potential adverse road traffic noise impact due to the junction improvement works.

Direct Mitigation Measures

5.7.15 When proposing the mitigation measures, various considerations have been taken into account, including the presence of road crossing, bus layby and site ingress/egress, sightline concerns and effectiveness in noise reduction. At source direct mitigation measures, including the application of low noise road surfacing material and vertical barriers of various heights, have been considered along the Project Roads and other roads. The location of the proposed direct mitigation measures is shown in Figures 5.27 to 5.28 with details summarised in Table 5.20. Different materials for low noise road surfacing are being reviewed and tested by the Government for application in Hong Kong. Further environmental reviews will be conducted at the later detailed design stage to review the proposed noise mitigation measures taking into account the latest design standard for the application of the low noise road surfacing materials.

Table 5.20 Extents and Locations of Considered Direct Mitigation Measures

Direct Mitigation	Type	Height (m)	Approx. Length (m)	Location	NSRs Protected
PNB01	Vertical Barrier	2.5	45	Hong Po Road (Eastbound), near Access Road from Hong Po Road Site	E4_TN01 (Village House near Realigned Hong Po Road) E5_TN01 (Village House near Realigned Hong Po Road)
PNB02	Vertical Barrier	2.5	72	Hong Po Road (Northbound), near Access Road to/ from San Hing Road Site Extension	E18_TN01 (House no. 272, Tsz Tin Tsuen), E18_TN05 (House no. 271, Tsz Tin Tsuen), E18_TN06 (House no. 274, Tsz Tin Tsuen),
PNB03	Vertical Barrier	2.5	53	Hong Po Road (Northbound), near San Hing Road	E18_TN04 (Village House near no. 151 Tsz Tin Tsuen)
PNB04	Vertical Barrier with Cantilever (Absorptive)	5.5 + 3.5 cantilever at 45°	162	Hong Po Road (Southbound), near SHR Site Sewage Pumping Station	P4_TN01 – P4_TN02 (Block 4 at SHR Site)
PNB05	Vertical Barrier with Cantilever (Absorptive)	5.5 + 2.5 cantilever at 45°	69	Ng Lau Road (Southbound)	P1_TN03 (Block 1 at SHR Site), P2_TN01 – P2_TN04 (Block 2 at SHR Site)
PNB06	Vertical Barrier with Cantilever	5.5 + 2.5 cantilever at 45°	55	Slip Road to Ng Lau Road (Northbound)	P2_TN03 – P2_TN04 (Block 2 at SHR Site)
PNB07	Vertical Barrier with Cantilever (Absorptive)	Northern section: 5.5 + 2.5 cantilever at 45° Southern section: 6.5 + 3.0 cantilever at 45°	Northern section: 28 Southern section: 27 Total: 55	Hing Kwai Street (Northbound)	E23_TN01 – E23_TN03 (TM54 Site 5)
PNB08	Vertical Barrier (Absorptive)	6.5 + 3.0 cantilever at 45° Opening of 3.5m (H) x 4m (W) at the barrier for crossing. A fully enclosed pedestrian walkway (~15m long) will be provided behind the crossing to shield E24's line of sight to the barrier opening.	56	Hing Kwai Street (Southbound)	E24_TN01 – E24_TN04 (TM54 Site 3/4 West)
LNRS	(N/A)	(N/A)	1218	Some sections of realigned Hong Po Road, Ng Lau Road, Tsing Lun Road, Slip road to Ng Lau Road and Slip road to San Hing Road	Existing NSRs along Tsing Lun Road, realigned Hong Po Road, and planned NSRs along realigned Hong Po Road, Ng Lau Road, slip road to Ng Lau Road and slip road to San Hing Road

5.7.16 The effectiveness of the noise barriers mentioned above is also evaluated. The evaluation and reasons for adopting the direct mitigation measures are provided in Table 5.21.

Table 5.21 Evaluation on Considered Direct Mitigation Measures

Direct Mitigation	Reduction of Noise Level dB(A)	To be Kept in Mitigated Scenario	Reasons
PNB01	E4_TN01: 0.8 E5_TN01: 2.4	✓	This noise barrier is effective in mitigating noise exceedance
PNB02	E18_TN01: 5.2-7.7 E18_TN05: 3.7-4.3 E18_TN06: 2.2-2.6	✓	This noise barrier is effective in mitigating noise exceedance
PNB03	E18_TN04: 4.7	✓	This noise barrier is effective in mitigating noise exceedance
PNB04	P4_TN01: 0.7-2.0 P4_TN02: 0.6-1.9	✓	This noise barrier is effective in mitigating noise exceedance
PNB05	P1_TN03: 0.0-0.5 P2_TN01: 0.0-0.5 P2_TN02: 0.0-0.3 P2_TN03: 0.0-1.1 P2_TN04: 0.0-0.9	✕	Reduction of noise level is minimal and acoustic windows will be proposed to mitigate noise exceedance
PNB06	P2_TN03: 0.0-0.4 P2_TN04: 0.0-0.2	✕	Reduction of noise level is minimal and acoustic windows will be proposed to mitigate noise exceedance
PNB07	E23_TN01: 0.0-1.5 E23_TN02: 0.0-6.5 E23_TN03: 0.1-1.4	✓	This noise barrier is effective in mitigating noise exceedance
PNB08	E24_TN01: 0.2-2.6 E24_TN02: 0.2-4.3 E24_TN03: 0.3-3.1 E24_TN04: 0.2-1.3	✓	This noise barrier is effective in mitigating noise exceedance
LNRS ^[1]	E5_TN01: 1.5 E18_TN04: 2.5 E18_TN05: 2.3-2.4 P1_TN03: 1.1-1.4	✓	Low noise road surfacing is effective in mitigating noise exceedance.
Note: [1] Only examples of selected representative NSRs along the proposed Low Noise Road Surfacing are shown.

5.7.17 The finalized set of direct mitigation measures proposed for the Project is depicted in Table 5.22.

Table 5.22 Extents and Locations of Adopted Direct Mitigation Measures

Noise Barrier	Type	Height (m)	Approx. Length (m)	Location	NSRs Protected
PNB01	Vertical Barrier	2.5	45	Hong Po Road (Eastbound), near Access Road from Hong Po Road Site	E5_TN01 (Village House near Realigned Hong Po Road)
PNB02	Vertical Barrier	2.5	72	Hong Po Road (Northbound), near Access Road to/ from San Hing Road Site Extension	E18_TN01 (House no. 272, Tsz Tin Tsuen), E18_TN05 (House no. 271, Tsz Tin Tsuen), E18_TN06 (House no. 274, Tsz Tin Tsuen),
PNB03	Vertical Barrier	2.5	53	Hong Po Road (Northbound), near San Hing Road	E18_TN04 (Village House near no. 151 Tsz Tin Tsuen)
PNB04	Vertical Barrier with Cantilever (Absorptive)	5.5 + 3.5 cantilever at 45°	162	Hong Po Road (Southbound), near SHR Site Sewage Pumping Station	P4_TN01 – P4_TN02 (Block 4 at SHR Site)
PNB07	Vertical Barrier with Cantilever (Absorptive)	Northern section: 5.5 + 2.5 cantilever at 45° Southern section: 6.5 + 3.0 cantilever at 45°	Northern section: 28 Southern section: 27 Total: 55	Hing Kwai Street (Northbound)	E23_TN01 – E23_TN03 (TM54 Site 5)
PNB08	Vertical Barrier (Absorptive)	6.5 + 3.0 cantilever at 45° Opening of 3.5m (H) x 4m (W) at the barrier for crossing. A fully enclosed pedestrian walkway (~15m long) will be provided behind the crossing to shield E24's line of sight to barrier opening.	56	Hing Kwai Street (Southbound)	E24_TN01 – E24_TN04 (TM54 Site 3/4 West)
LNRS	(N/A)	(N/A)	1218	Some sections of realigned Hong Po Road, Ng Lau Road, Tsing Lun Road, Slip road to Ng Lau Road and Slip road to San Hing Road	Existing NSRs along Tsing Lun Road, realigned Hong Po Road, and planned NSRs along realigned Hong Po Road, Ng Lau Road, slip road to Ng Lau Road and slip road to San Hing Road

Mitigated Noise Levels for Existing and Planned NSRs (Outside the PDA) Affected by Roads within the PDA

5.7.18 With the implementation of the proposed direct noise mitigation measures listed in Table 5.22, the predicted mitigated road traffic noise levels at the representative existing NSRs and planned NSRs outside the PDA are presented in Table 5.23 with details provided in Appendix 5.15.

5.7.19 As shown in Table 5.23, with the implementation of mitigation measures, the predicted traffic noise levels at all existing NSRs and planned NSRs outside the PDA except E23_TN03 would comply with the relevant criteria or the predicted noise levels from Project roads comply with the relevant criteria and the contribution to the overall noise level from Project roads is <1.0 dB(A).

Mitigated Noise Levels for Planned NSRs within the PDA

5.7.20 With the implementation of proposed mitigation measures listed in Table 5.22, the predicted mitigated road traffic noise level at the representative planned NSRs within the PDA are presented in Table 5.24 with details provided in Appendix 5.15.

Mitigated Noise Levels for NSRs near J13

5.7.21 With the implementation of proposed mitigation measures listed in Table 5.22, the predicted mitigated road traffic noise level at the representative planned NSRs E23 and E24 near the proposed junction improvement at J13 are presented in Table 5.24 with details provided in Appendix 5.15. With mitigation measures in place, the predicted noise levels from Project roads at J13 would comply with the relevant criteria and the contribution to the overall noise level from Project roads is <1.0 dB(A) at the NSRs, except E23_TN03.

Table 5.23 Predicted Mitigated Road Traffic Noise Impact (AM Peak) at Existing and Planned NSRs (Outside the PDA) Affected by Roads within the PDA (with Direct Mitigation Measures Applied)

NSR	NAP ^[1]	Description	Criteria, L10 1hr dB(A)	Noise Impact, L10 1hr dB(A) ^[2]			Project Road Contribution, dB(A)	Direct Mitigation Measures Applied^[3]	Residual Impact [Y/N]
				Other Road [A]	Project Roads [B]	Overall [C]
E1	E1_TN01	Village House near Villa Pinada	70	24	33	34	9.4	-	N
E2	E2_TN01	Village House near Villa Pinada	70	43	59	60	16.6	-	N
E3	E3_TN01	Village House near Villa Pinada	70	34-38	65	65	27.3 - 30.4	-	N
E4	E4_TN01	Village House near Realigned Hong Po Road	70	48	70	70	21.6	PNB01, LNRS	N
E5	E5_TN01	Village House near Realigned Hong Po Road	70	50	69	69	19.8	PNB01	N
E7	E7_TN01	Village House near Villa Pinada	70	45	65	65	19.9 - 20.1	-	N
E9	E9_TN01	House no. 99, San Hing Tsuen	70	57-59	55	59-60	1.5 – 2.0	-	N
E9	E9_TN02	House no. 37, San Hing Tsuen	70	73-74	61	73-74	0.2 - 0.3	-	N
E9	E9_TN03	House no. 96, San Hing Tsuen	70	57-60	37-40	57-60	0.0 - 0.1	-	N
E9	E9_TN04	House no. 102, San Hing Tsuen	70	63	56	63-64	0.8 - 0.9	-	N
E9	E9_TN05	House no. 77, San Hing Tsuen	70	63	54	63	0.4 - 0.5	-	N
E9	E9_TN06	House no. 271, San Hing Tsuen	70	58-59	55	60	1.6 - 1.7	-	N
E11	E11_TN01	TWGHs Yau Tze Tin Memorial College	65	75	64	75	0.3 - 0.4	LNRS	N
E11	E11_TN02	TWGHs Yau Tze Tin Memorial College	65	77	59-61	77	0.1	-	N
E12	E12_TN04	Siu Ning House, Siu Hong Court	70	74-75	52-60	74-75	0.0 - 0.2	-	N
E16	E16_TN02	Chun Tin House, Yan Tin Estate	70	62-73	45-59	62-73	0.1 - 0.3	-	N
E16	E16_TN03	Chun Tin House, Yan Tin Estate	70	51-52	64-66	64-66	13.0 - 14.3	-	N
E16	E16_TN04	Chun Tin House, Yan Tin Estate	70	60-67	65-67	66-70	2.6 - 5.8	LNRS	N
E16	E16_TN05	Chun Tin House, Yan Tin Estate	70	58-72	58-63	61-73	0.4 – 3.0	LNRS	N
E16	E16_TN06	Yat Tin House, Yan Tin Estate	70	65-73	53-60	65-74	0.1 - 0.4	-	N
E18	E18_TN01	House no. 272, Tsz Tin Tsuen	70	48-51	65-67	65-67	16.6 – 17.3	PNB02	N
E18	E18_TN02	House no. 285, Tsz Tin Tsuen	70	33-40	67	67	27.4 - 34.4	-	N
E18	E18_TN03	House no. 136, Tsz Tin Tsuen	70	43	66	66	22.9	-	N
E18	E18_TN04	Village House near no. 151, Tsz Tin Tsuen	70	48	67	67	19.4	PNB03	N
E18	E18_TN05	House no. 271, Tsz Tin Tsuen	70	44-47	67-68	67-68	20.6 – 23.4	PNB02	N
E18	E18_TN06	House no. 274, Tsz Tin Tsuen	70	45-47	68	68	21.1 - 22.7	PNB02	N
E19	E19_TN01	House no. 93, Po Tong Ha	70	31-36	64	64	28.8 - 33.5	-	N
E19	E19_TN02	Block F, Houses no.80, Po Tong Ha	70	31-40	64	64	24.0 - 32.8	-	N
E20	E20_TN01	Village House near Proposed Road L7	70	40	67	67	27.3	-	N
E21	E21_TN01	Block 3, TM54 Site 1 & 1A	70	28-30	64-67	64-67	35.4 - 37.2	-	N
E21	E21_TN02	Block 2, TM54 Site 1 & 1A	70	45-47	64-69	64-69	18.6 - 21.9	-	N
E21	E21_TN03	Block 1, TM54 Site 1 & 1A	70	35-39	63-69	63-69	28.4 - 30.1	-	N
E22	E22_TN01	Block F, Phase 2, Po Wah Garden	70	72	64	72	0.7	-	N
E22	E22_TN02	Block D, Phase 2, Po Wah Garden	70	71	61	71	0.5	-	N
E23	E23_TN01	TM Area 54 Site 5	70	63-68	57-67	64-70	0.9 - 3.3	PNB07, PNB08	N ^[4]
E23	E23_TN02	TM Area 54 Site 5	70	59-64	60-67	62-69	3.1 – 6.0	PNB07, PNB08	N ^[4]
E23	E23_TN03	TM Area 54 Site 5	70	68-71	61-66	69-72	0.7 - 1.7	PNB07, PNB08	Y
E24	E24_TN01	TM Area 54 Site 3/4 (West)	70	61-68	57-66	62-70	1.0 - 2.4	PNB07, PNB08	N
E24	E24_TN02	TM Area 54 Site 3/4 (West)	70	67-69	59-66	67-70	0.7 - 2.2	PNB07, PNB08	N
E24	E24_TN03	TM Area 54 Site 3/4 (West)	70	63-69	55-65	64-70	0.4 - 1.6	PNB07, PNB08	N
E24	E24_TN04	TM Area 54 Site 3/4 (West)	70	69-71	47-63	70-71	0.0 - 0.8	PNB07, PNB08	N
E33	E33_TN01	Fung Shan Temple	65	74	64	74	0.4	-	N
Note: [1] The assessment only includes NSRs which rely on opened windows for ventilation. [2] Bolded values denote exceedance of the relevant noise criteria. [3] “PNB” denotes ID of proposed noise barrier and “LNRS” denotes Low Noise Road Surfacing. [4] For assessment height levels with incremental impact of 1.0 dB(A) or above, the overall noise level would comply with the criterion.

Table 5.24 Predicted Mitigated Road Traffic Noise Impact (AM Peak) at Planned NSRs (Within the PDA) Affected by Roads within the PDA (with Direct Mitigation Measures Applied)

NSR	NAP ^[1]	Description	Criteria, L10 1hr dB(A)	Overall Noise Impact, L10 1hr dB(A) ^[2]	Direct Mitigation Measures Applied^[5]	Additional Direct Mitigation Measures Required [Y/N]
P1	P1_TN01	Block 1, San Hing Road Site	70	69-70	-	N
P1	P1_TN02	Block 1, San Hing Road Site	70	65-66	-	N
P1	P1_TN03	Block 1, San Hing Road Site	70	73-75	LNRS	Y
P1	P1_TN04	Block 1, San Hing Road Site	70	74-75	LNRS	Y
P1	P1_TN05	Block 1, San Hing Road Site	70	74-75	LNRS	Y
P1	P1_TN06	Block 1, San Hing Road Site	70	75-76	LNRS	Y
P1	P1_TN07	Block 1, San Hing Road Site	70	75-76	LNRS	Y
P1	P1_TN08	Block 1, San Hing Road Site	70	76-77	LNRS	Y
P2	P2_TN01	Block 2, San Hing Road Site	70	70-71	LNRS	Y
P2	P2_TN02	Block 2, San Hing Road Site	70	70-71	LNRS	Y
P2	P2_TN03	Block 2, San Hing Road Site	70	71-73	LNRS	Y
P2	P2_TN04	Block 2, San Hing Road Site	70	72-74	LNRS	Y
P2	P2_TN05	Block 2, San Hing Road Site	70	57-61	-	N
P2	P2_TN06	Block 2, San Hing Road Site	70	57-64	-	N
P2	P2_TN07	Block 2, San Hing Road Site	70	55-62	-	N
P2	P2_TN08	Block 2, San Hing Road Site	70	54-59	-	N
P3	P3_TN01	Block 3, San Hing Road Site	70	59-66	-	N
P3	P3_TN02	Block 3, San Hing Road Site	70	62-67	-	N
P3	P3_TN03	Block 3, San Hing Road Site	70	66-67	-	N
P3	P3_TN04	Block 3, San Hing Road Site	70	63-64	-	N
P4	P4_TN01	Block 4, San Hing Road Site	70	65-69	LNRS, PNB04	N
P4	P4_TN02	Block 4, San Hing Road Site	70	66-69	LNRS, PNB04	N
P4	P4_TN03	Block 4, San Hing Road Site	70	61-63	-	N
P4	P4_TN04	Block 4, San Hing Road Site	70	62-64	-	N
P4	P4_TN05	Block 4, San Hing Road Site	70	59-60	-	N
P4	P4_TN06	Block 4, San Hing Road Site	70	60-61	-	N
P5	P5_TN01	Block 5, San Hing Road Site	70	57-58	-	N
P5	P5_TN02	Block 5, San Hing Road Site	70	57-58	-	N
P5	P5_TN03	Block 5, San Hing Road Site	70	41-62	-	N
P6	P6_TN01	Block 6, San Hing Road Site	70	59-61	-	N
P6	P6_TN02	Block 6, San Hing Road Site	70	57-60	-	N
P6	P6_TN03	Block 6, San Hing Road Site	70	56-58	-	N
P7	P7_TN01	Block 7, San Hing Road Site	70	46-50	-	N
P7	P7_TN02	Block 7, San Hing Road Site	70	51-54	-	N
P7	P7_TN03	Block 7, San Hing Road Site	70	54-55	-	N
P7	P7_TN04	Block 7, San Hing Road Site	70	53-54	-	N
P8	P8_TN01	Block 8, San Hing Road Site	70	61-62	-	N
P8	P8_TN02	Block 8, San Hing Road Site	70	61-63	-	N
P8	P8_TN03	Block 8, San Hing Road Site	70	53-56	-	N
P8	P8_TN04	Block 8, San Hing Road Site	70	54-56	-	N
P9	P9_TN01	Block 9, San Hing Road Site	70	64-66	-	N
P9	P9_TN02	Block 9, San Hing Road Site	70	63-66	-	N
P9	P9_TN03	Block 9, San Hing Road Site	70	65-67	-	N
P9	P9_TN04	Block 9, San Hing Road Site	70	64-67	-	N
P10	P10_TN01	School at San Hing Road Site	65	62-63	-	N
P10	P10_TN02	School at San Hing Road Site	65	60-62	-	N
P10	P10_TN03	School at San Hing Road Site	65	60-61	-	N
P11	P11_TN01	School at San Hing Road Site	65	63-64	LNRS	N
P11	P11_TN02	School at San Hing Road Site	65	62-63	-	N
P12	P12_TN01	Block 1, San Hing Road Site Extension	70	65-66	-	N
P12	P12_TN02	Block 1, San Hing Road Site Extension	70	64-66	-	N
P13	P13_TN01	Block 2, San Hing Road Site Extension	70	57-59	-	N
P13	P13_TN02	Block 2, San Hing Road Site Extension	70	57-59	-	N
P14	P14_TN01	School at San Hing Road Site Extension	65	63-64	-	N
P14	P14_TN02	School at San Hing Road Site Extension	65	64	-	N
P15	P15_TN01	School at San Hing Road Site Extension	65	59	-	N
P15	P15_TN02	School at San Hing Road Site Extension	65	60-61	-	N
P16	P16_TN01	School at San Hing Road Site Extension	65	57-58	-	N
P17	P17_TN01	Block 1, Hong Po Road Site	70	64-68	-	N
P17	P17_TN02	Block 1, Hong Po Road Site	70	65-68	-	N
P17	P17_TN03	Block 1, Hong Po Road Site	70	59-61	-	N
P18	P18_TN01	Block 2, Hong Po Road Site	70	59-60	-	N
P18	P18_TN02	Block 2, Hong Po Road Site	70	58-60	-	N
P19	P19_TN01	Block 10, Hong Po Road Site	70	62-65	-	N
P19	P19_TN02	Block 10, Hong Po Road Site	70	62-64	-	N
P20	P20_TN01	Block 11, Hong Po Road Site	70	60-61	-	N
P20	P20_TN02	Block 11, Hong Po Road Site	70	60-61	-	N
P20	P20_TN03	Block 11, Hong Po Road Site	70	64-68	-	N
P20	P20_TN04	Block 11, Hong Po Road Site	70	65-68	-	N
SHRW	SHRW_TN01	Welfare facility at San Hing Road Site	55/65 ^[3]	62	LNRS	- ^[4]
SHRW	SHRW_TN02	Welfare facility at San Hing Road Site	55/65 ^[3]	64	LNRS	- ^[4]
SHRW	SHRW_TN03	Welfare facility at San Hing Road Site	55/65 ^[3]	68	LNRS	Y
SHRW	SHRW_TN04	Welfare facility at San Hing Road Site	55/65 ^[3]	69	LNRS	Y
SHRW	SHRW_TN05	Welfare facility at San Hing Road Site	55/65 ^[3]	72	LNRS	Y
SHRW	SHRW_TN06	Welfare facility at San Hing Road Site	55/65 ^[3]	71	LNRS	Y
SHRW	SHRW_TN07	Welfare facility at San Hing Road Site	55/65 ^[3]	63	LNRS	- ^[4]
SHRW	SHRW_TN08	Welfare facility at San Hing Road Site	55/65 ^[3]	62	-	- ^[4]
HPRW	HPRW_TN01	Welfare facility at Hong Po Road Site	55/65 ^[3]	57	-	- ^[4]
HPRW	HPRW_TN02	Welfare facility at Hong Po Road Site	55/65 ^[3]	60	-	- ^[4]
HPRW	HPRW_TN03	Welfare facility at Hong Po Road Site	55/65 ^[3]	63	LNRS	- ^[4]
HPRW	HPRW_TN04	Welfare facility at Hong Po Road Site	55/65 ^[3]	65	LNRS	- ^[4]
HPRW	HPRW_TN05	Welfare facility at Hong Po Road Site	55/65 ^[3]	67	LNRS	Y
HPRW	HPRW_TN06	Welfare facility at Hong Po Road Site	55/65 ^[3]	64	-	- ^[4]
HPRW	HPRW_TN07	Welfare facility at Hong Po Road Site	55/65 ^[3]	62	-	- ^[4]
HPRW	HPRW_TN08	Welfare facility at Hong Po Road Site	55/65 ^[3]	60	-	- ^[4]
HPRW	HPRW_TN09	Welfare facility at Hong Po Road Site	55/65 ^[3]	59	-	- ^[4]
Note: [1] The assessment only includes NSRs which rely on opened windows for ventilation. [2] Bolded values denote exceedance of the relevant noise criteria. [3] The type of welfare use cannot be confirmed at this stage and the criteria for different use vary. According to the EIAO-TM, 55 dB(A) shall apply to diagnostic rooms and wards in clinics, convalescences and home for the aged while 65 dB(A) shall apply to educational institutions, including kindergartens and nurseries, that rely on openable windows for ventilation. [4] The requirement for further mitigation measures depend on the type of welfare use to be adopted. [5] “PNB” denotes ID of proposed noise barrier and “LNRS” denotes Low Noise Road Surfacing.

5.7.22 After the implementation of direct mitigation measures, residual impact is anticipated at a planned NSR outside the PDA (E23_TN03) as shown in Table 5.23. The provision of absorptive noise barrier along the northern footpath of Hing Fu Street will obstruct the sight line between the motorist and the pedestrian crossing waiting area, resulting in a sight distance much less than the required 50m as stipulated in Transport Planning & Design Manual (TPDM). Hence, the proposed at receiver mitigation measures (e.g. alternative layout design and acoustic windows) have been make known to Hong Kong Housing Authority (HKHA) and will be subject to further design by HKHA. HKHA can further explore alternative options, e.g. building orientation, building set back, architectural features/balcony etc, which can achieve the corresponding traffic noise reduction during the detailed design stage. An Environmental Assessment Study for the planned public housing development will be conducted by HKHA in the detailed design stage to address the environment impacts and to comply with relevant criteria.

5.7.23 As shown in Table 5.24, exceedance of criteria is still predicted at some planned NSRs within the PDA. For the planned residential NSRs at SHR Site (P1_TN03 to P1_TN08 and P2_TN01 to P2_TN04), the exceedances are due to other roads (Tsing Lun Road and Castle Peak Road) and a short section of Project road (Ng Lau Road). As discussed in Section 5.7.16 and Table 5.21, noise barriers along Ng Lau Road have been considered but they are found to be ineffective in alleviating traffic noise impact to these NSRs and thus not recommended.

5.7.24 Regarding the provision of direct mitigation measures on other roads, the erection of noise barrier at the kerb side of eastbound Tsing Lun Road will conflict with the proposed footbridge, while the erection of noise barrier at the central divider of Tsing Lun Road is constrained by inadequate space. Hence, only the application of low noise road surfacing material has been proposed along Tsing Lun Road.

5.7.25 With the implementation of the proposed direct mitigation measures, the total number of dwellings, classrooms and NSRs that will be benefited and protected are summarised in Table 5.25.

Table 5.25 Number of Residential Dwellings/Classrooms/Other NSRs Benefited and Protected under the Mitigated Scenario (with Direct Mitigation Measures Applied)

Location	No. of Dwellings ^[1]		No. Classrooms ^[2]		Others
	Benefited	Protected	Benefited	Protected	Benefited	Protected
Existing NSRs
Within PDA	-	-	-	-	-	-
Vicinity of PDA	174	208	18	0	0	0
Planned NSRs
Within PDA	368	180	15	15	5 ^[3]	2 ^[3]
Vicinity of PDA	-	-	-	-	-	-
Note: [1] For high-rise building, 1 NAP is assumed to represent 2 dwellings per floor while for village house, 1 NAP is assumed to represent 1 dwelling per floor. [2] 1 NAP is assumed to represent 3 classrooms per floor. E11_TN02 is school hall and this NAP is considered to represent 1 classroom per floor. [3] Welfare uses

5.7.26 The total number of dwellings, classrooms and other NSRs that will still be exposed to noise impact exceeding the criteria set out in Annex 5 of the EIAO-TM under mitigated scenarios is summarised in Table 5.26. All direct mitigation measures have been proposed, such that the predicted noise levels from Project roads would not exceed the noise criteria and the noise contribution from the Project roads to the overall noise levels is insignificant (i.e. less than 1.0 dB(A)) at the existing NSRs. The exceedance at the existing NSRs are mainly due to other roads.

Table 5.26 Number of Residential Dwellings/Classrooms/Other NSRs Exceeding the Respective Traffic Noise Criteria under Mitigated Scenario (with Direct Mitigation Measures Applied)

Location	Existing NSRs			Planned NSRs
	No. of Dwellings ^[1]	No. of Classrooms ^[2]	Others	No. of Dwellings ^[1]	No. of Classrooms ^[2]	Others
Within PDA	-	-	-	662	0	5 ^[4]
Vicinity of PDA	303	24	1 ^[3]	-	-
Note: [1] For high-rise building, 1 NAP is assumed to represent 2 dwellings per floor while for village house, 1 NAP is assumed to represent 1 dwelling per floor. [2] 1 NAP is assumed to represent 3 classrooms per floor. E11_TN02 is school hall and this NAP is considered to represent 1 classroom per floor. [3] Temple [4] Welfare uses

Additional Mitigation Measures at the Proposed Housing Sites

5.7.27 After the exhaustion of direct mitigation measures, additional mitigation measures at the proposed housing sites are proposed to alleviate the road traffic noise impacts. The provision of acoustic windows for the planned public housing is recommended. Details of the recommended provision of acoustic windows at the planned NSRs are summarised in Table 5.27. Acoustic windows with up to 6.9 dB(A) noise reduction are recommended to alleviate the adverse traffic noise impact. According to EPD’s website on Innovative Noise Mitigation Designs and Measures, acoustic windows (baffle-type) applied in the Public Residential Development at San Po Kong are capable of achieving a noise reduction of 4-8 dB(A). Since the assessment results revealed that a noise reduction of up to 6.9 dB(A) is required, acoustic windows are considered feasible to alleviate the predicted road traffic noise impact and shall be subject to the detailed design of the building layout and mitigation measures can be counter-proposed in the future Environmental Assessment Study report.

Table 5.27 Proposed Provision of Acoustic Windows at the Planned NSRs within the PDA

NSR	NAP	Description	Floors Applicable
P1	P1_TN03	Block 1, San Hing Road Site	1-32
P1	P1_TN04	Block 1, San Hing Road Site	1-32
P1	P1_TN05	Block 1, San Hing Road Site	1-32
P1	P1_TN06	Block 1, San Hing Road Site	1-32
P1	P1_TN07	Block 1, San Hing Road Site	1-32
P1	P1_TN08	Block 1, San Hing Road Site	1-32
P2	P2_TN01	Block 2, San Hing Road Site	1-34, 43-44
P2	P2_TN02	Block 2, San Hing Road Site	2-16
P2	P2_TN03	Block 2, San Hing Road Site	1-44
P2	P2_TN04	Block 2, San Hing Road Site	1-44

5.7.28 Although the proposed type of use at the welfare facility cannot be confirmed at this stage, mitigation measure in the form of a 2m high solid concrete boundary wall (approximately 129m long) at the planned housing site near the welfare facility at SHR Site has been proposed to allow for the flexibility of locating facilities with a less stringent noise criterion, e.g. kindergarten or nurseries.

5.7.29 As the welfare facility at HPR Site will be located on the 3^rd floor, site boundary wall will not be effective to screen the noise from the access road in HPR Site. As the façade with noise level exceeding 65 dB(A) is short, it is recommended that uses that do not rely on openable window for ventilation to be located at that particular façade (see Figure 5.27).

5.7.30 With the provision of acoustic windows and boundary wall, the predicted mitigation road traffic noise level at the representative planned NSRs within the PDA are presented in Table 5.28 with details provided in Appendix 5.16.

Table 5.28 Predicted Mitigated Road Traffic Noise Impact (AM Peak) at Planned NSRs (Within the PDA) Affected by Roads within the PDA (with Direct and Additional Mitigation Measures Applied)

NSR	NAP ^[1]	Description	Criteria, L10 1hr dB(A)	Overall Noise Impact, L10 1hr dB(A) ^[2]	Direct Mitigation Measures Applied ^[4]	Additional Direct Mitigation Measures Applied ^[5]	Extra Mitigation Measures Required [Y/N]
P1	P1_TN01	Block 1, San Hing Road Site	70	69-70	-	-	N
P1	P1_TN02	Block 1, San Hing Road Site	70	65-66	-	-	N
P1	P1_TN03	Block 1, San Hing Road Site	70	67-68	LNRS	AW	N
P1	P1_TN04	Block 1, San Hing Road Site	70	67-68	LNRS	AW	N
P1	P1_TN05	Block 1, San Hing Road Site	70	68-69	LNRS	AW	N
P1	P1_TN06	Block 1, San Hing Road Site	70	68-69	LNRS	AW	N
P1	P1_TN07	Block 1, San Hing Road Site	70	68-70	LNRS	AW	N
P1	P1_TN08	Block 1, San Hing Road Site	70	69-70	LNRS	AW	N
P2	P2_TN01	Block 2, San Hing Road Site	70	64-70	LNRS	AW	N
P2	P2_TN02	Block 2, San Hing Road Site	70	64-70	LNRS	AW	N
P2	P2_TN03	Block 2, San Hing Road Site	70	64-66	LNRS	AW	N
P2	P2_TN04	Block 2, San Hing Road Site	70	65-67	LNRS	AW	N
P2	P2_TN05	Block 2, San Hing Road Site	70	57-61	-	-	N
P2	P2_TN06	Block 2, San Hing Road Site	70	57-64	-	-	N
P2	P2_TN07	Block 2, San Hing Road Site	70	55-62	-	-	N
P2	P2_TN08	Block 2, San Hing Road Site	70	54-59	-	-	N
P3	P3_TN01	Block 3, San Hing Road Site	70	59-66	-	-	N
P3	P3_TN02	Block 3, San Hing Road Site	70	62-67	-	-	N
P3	P3_TN03	Block 3, San Hing Road Site	70	66-67	-	-	N
P3	P3_TN04	Block 3, San Hing Road Site	70	63-64	-	-	N
P4	P4_TN01	Block 4, San Hing Road Site	70	65-69	LNRS, PNB04	-	N
P4	P4_TN02	Block 4, San Hing Road Site	70	66-69	LNRS, PNB04	-	N
P4	P4_TN03	Block 4, San Hing Road Site	70	61-63	-	-	N
P4	P4_TN04	Block 4, San Hing Road Site	70	62-64	-	-	N
P4	P4_TN05	Block 4, San Hing Road Site	70	59-60	-	-	N
P4	P4_TN06	Block 4, San Hing Road Site	70	60-61	-	-	N
P5	P5_TN01	Block 5, San Hing Road Site	70	57-58	-	-	N
P5	P5_TN02	Block 5, San Hing Road Site	70	57-58	-	-	N
P5	P5_TN03	Block 5, San Hing Road Site	70	41-62	-	-	N
P6	P6_TN01	Block 6, San Hing Road Site	70	59-61	-	-	N
P6	P6_TN02	Block 6, San Hing Road Site	70	57-60	-	-	N
P6	P6_TN03	Block 6, San Hing Road Site	70	56-58	-	-	N
P7	P7_TN01	Block 7, San Hing Road Site	70	46-50	-	-	N
P7	P7_TN02	Block 7, San Hing Road Site	70	51-54	-	-	N
P7	P7_TN03	Block 7, San Hing Road Site	70	54-55	-	-	N
P7	P7_TN04	Block 7, San Hing Road Site	70	53-54	-	-	N
P8	P8_TN01	Block 8, San Hing Road Site	70	61-62	-	-	N
P8	P8_TN02	Block 8, San Hing Road Site	70	61-63	-	-	N
P8	P8_TN03	Block 8, San Hing Road Site	70	53-56	-	-	N
P8	P8_TN04	Block 8, San Hing Road Site	70	54-56	-	-	N
P9	P9_TN01	Block 9, San Hing Road Site	70	64-66	-	-	N
P9	P9_TN02	Block 9, San Hing Road Site	70	63-66	-	-	N
P9	P9_TN03	Block 9, San Hing Road Site	70	65-67	-	-	N
P9	P9_TN04	Block 9, San Hing Road Site	70	64-67	-	-	N
P10	P10_TN01	School at San Hing Road Site	65	62-63	-	-	N
P10	P10_TN02	School at San Hing Road Site	65	60-62	-	-	N
P10	P10_TN03	School at San Hing Road Site	65	60-61	-	-	N
P11	P11_TN01	School at San Hing Road Site	65	63-64	LNRS	-	N
P11	P11_TN02	School at San Hing Road Site	65	62-63	-	-	N
P12	P12_TN01	Block 1, San Hing Road Site Extension	70	65-67	-	-	N
P12	P12_TN02	Block 1, San Hing Road Site Extension	70	64-66	-	-	N
P13	P13_TN01	Block 2, San Hing Road Site Extension	70	57-59	-	-	N
P13	P13_TN02	Block 2, San Hing Road Site Extension	70	57-59	-	-	N
P14	P14_TN01	School at San Hing Road Site Extension	65	63	-	-	N
P14	P14_TN02	School at San Hing Road Site Extension	65	64	-	-	N
P15	P15_TN01	School at San Hing Road Site Extension	65	59	-	-	N
P15	P15_TN02	School at San Hing Road Site Extension	65	60-61	-	-	N
P16	P16_TN01	School at San Hing Road Site Extension	65	57-58	-	-	N
P17	P17_TN01	Block 1, Hong Po Road Site	70	64-68	-	-	N
P17	P17_TN02	Block 1, Hong Po Road Site	70	65-68	-	-	N
P17	P17_TN03	Block 1, Hong Po Road Site	70	59-61	-	-	N
P18	P18_TN01	Block 2, Hong Po Road Site	70	59-60	-	-	N
P18	P18_TN02	Block 2, Hong Po Road Site	70	58-60	-	-	N
P19	P19_TN01	Block 10, Hong Po Road Site	70	62-65	-	-	N
P19	P19_TN02	Block 10, Hong Po Road Site	70	62-64	-	-	N
P20	P20_TN01	Block 11, Hong Po Road Site	70	60-61	-	-	N
P20	P20_TN02	Block 11, Hong Po Road Site	70	60-61	-	-	N
P20	P20_TN03	Block 11, Hong Po Road Site	70	64-68	-	-	N
P20	P20_TN04	Block 11, Hong Po Road Site	70	65-68	-	-	N
SHRW	SHRW_TN01	Welfare facility at San Hing Road Site	55/65 ^[3]	60	LNRS	BW	- ^[6]
SHRW	SHRW_TN02	Welfare facility at San Hing Road Site	55/65 ^[3]	63	LNRS	BW	- ^[6]
SHRW	SHRW_TN03	Welfare facility at San Hing Road Site	55/65 ^[3]	64	LNRS	BW	- ^[6]
SHRW	SHRW_TN04	Welfare facility at San Hing Road Site	55/65 ^[3]	61	LNRS	BW	- ^[6]
SHRW	SHRW_TN05	Welfare facility at San Hing Road Site	55/65 ^[3]	64	LNRS	BW	- ^[6]
SHRW	SHRW_TN06	Welfare facility at San Hing Road Site	55/65 ^[3]	63	LNRS	BW	- ^[6]
SHRW	SHRW_TN07	Welfare facility at San Hing Road Site	55/65 ^[3]	62	LNRS	BW	- ^[6]
SHRW	SHRW_TN08	Welfare facility at San Hing Road Site	55/65 ^[3]	62	-	-	- ^[6]
HPRW	HPRW_TN01	Welfare facility at Hong Po Road Site	55/65 ^[3]	57	-	-	- ^[6]
HPRW	HPRW_TN02	Welfare facility at Hong Po Road Site	55/65 ^[3]	60	-	-	- ^[6]
HPRW	HPRW_TN03	Welfare facility at Hong Po Road Site	55/65 ^[3]	63	LNRS	-	- ^[6]
HPRW	HPRW_TN04	Welfare facility at Hong Po Road Site	55/65 ^[3]	65	LNRS	-	- ^[6]
HPRW	HPRW_TN05	Welfare facility at Hong Po Road Site	55/65 ^[3]	67	LNRS	-	- ^[7]
HPRW	HPRW_TN06	Welfare facility at Hong Po Road Site	55/65 ^[3]	64	-	-	- ^[6]
HPRW	HPRW_TN07	Welfare facility at Hong Po Road Site	55/65 ^[3]	62	-	-	- ^[6]
HPRW	HPRW_TN08	Welfare facility at Hong Po Road Site	55/65 ^[3]	60	-	-	- ^[6]
HPRW	HPRW_TN09	Welfare facility at Hong Po Road Site	55/65 ^[3]	59	-	-	- ^[6]
Note: [1] The assessment only includes NSRs which rely on opened windows for ventilation. [2] Bolded values denote exceedance of the relevant noise criteria. [3] The type of welfare use cannot be confirmed at this stage and the criteria for different use vary. According to the EIAO-TM, 55 dB(A) shall apply to diagnostic rooms and wards in clinics, convalescences and home for the aged while 65 dB(A) shall apply to educational institutions, including kindergartens and nurseries, that rely on openable windows for ventilation. [4] “PNB” denotes ID of proposed noise barrier, “LNRS” denotes Low Noise Road Surfacing [5] “AW” denotes acoustic windows and “BW” denotes boundary wall. [6] The requirement for further mitigation measures depend on the type of welfare use to be adopted (see Section 5.7.32). [7] Prohibited for clinics, convalescences, home for the aged diagnostic rooms and wards and education institutions uses including kindergarten and nurseries which rely on openable windows for ventilation.

5.7.31 The proposed additional mitigation measures at the proposed housing sites i.e. the provision of acoustic windows (baffle type), boundary wall for the planned public housing development have been made known to HKHA and will be subject to further design by HKHA. HKHA can further explore alternative options, e.g. building orientation, building set back, architectural features/balcony etc, which can achieve the corresponding traffic noise reduction during the detailed design stage. An Environmental Assessment Study for the planned public housing development will be conducted by HKHA in the detailed design stage to address the environment impacts and to comply with relevant criteria.

5.7.32 For the proposed welfare facility at SHR Site, educational uses which rely on openable windows for ventilation can be located at all facades provided that the proposed boundary walls are in place. Other uses with a more stringent noise criterion which rely on openable windows for ventilation, such as diagnostic rooms and wards in clinics, convalescences and homes for the aged, are not recommended to be located along the façade facing the realigned Hong Po Road. For the proposed welfare facility at HPR Site, uses that do not rely on openable window for ventilation is proposed at the façade closest to the access road (see Figure 5.27), while other facades facing the access road can be used for educational uses. Other uses with a more stringent noise criterion which rely on openable windows for ventilation, such as diagnostic rooms and wards in clinics, convalescences and homes for the aged, are not recommended to be located along the façade facing the access road.

5.7.33 These restriction on noise sensitive uses on the proposed welfare facilities as well as the need of the boundary walls have been made known to the HKHA and will be reviewed by HKHA during the detailed design stage when the type and layout plan of welfare use is confirmed.

Residual Road Traffic Noise Impact

5.7.34 With the implementation of mitigation measures and consideration of site constraints during the detailed design of Tuen Mun Area 54 Site 5 and the welfare facilities at San Hing Road Site and Hong Po Road Site, no residual road traffic noise impact is expected.

5.8 Fixed Noise Source Impact Assessment

Assessment Approach and Methodology

5.8.1 Fixed noise source impact assessment will be conducted based on the following procedures:

· Determine the assessment area;

· Identify and locate representative NSRs that may be affected by the noise sources;

· Determine the noise criteria for both daytime and night-time;

· Use standard acoustic principle for attenuation and directivity;

· Adopt correction of tonality, impulsiveness and intermittency as stipulated in the IND-TM;

· Calculate the noise impacts using assumed plant inventories and utilisation schedule for worst case scenario; and

· Cumulative impacts will be included.

5.8.2 The assessment for fixed noise source impact is conducted in accordance with the IND-TM and the criteria set in Annex 5 of the EIAO-TM.  The worst operation mode with 100% operation is assumed in the prediction.  The noise levels from operation of existing fixed noise sources are determined by noise measurement on-site or with reference to measurement taken for similar sources of typical operation.  As there is no detailed design information on the planned PTIs, maximum allowable sound power levels for the planned fixed noise sources is predicted based on backward calculation of separation distance between the noise sources and the nearest NSRs regardless on the percentage usage.  For the planned SHR SPS, typical plant and equipment for SPS based on the DSD’s Design Memorandum have been assumed. Cumulative fixed noise impact arising from existing and planned fixed noise sources located within 300 m assessment area at each representative planned NSR is assessed.  For the existing NSRs located within 300m of the planned fixed noise sources, cumulative fixed noise impact from the planned fixed noise sources is assessed. Validity of the operation modes of the planned fixed noise source have been confirmed with the Project Engineer.  Project Proponent would further liaise and agree with the relevant departments on the responsibility of implementation and maintenance of the predicted maximum allowable sound power levels for the planned fixed plant noise sources in the detailed design stage.

Prediction and Evaluation of Fixed Noise Source Impact

5.8.3 Fixed noise source impact due to the applicable sources identified in Table 5.11 have been predicted for the representative NSRs closest to the noise sources.

5.8.4 A SHR SPS at SHR Site and a total of two PTIs are planned within the PDA, one at HPR Site and one at SHR Site. The SHR SPS will be an enclosed structure with ventilation fans. The PTIs would be enclosed with openings only at the ingress/egress and designed with no line-of-sight to the nearby planned and existing NSRs to avoid noise impact due to the operation within the PTIs.

5.8.5 The potential fixed noise sources of the PTIs may include the operation of ventilation fans. It is recommended that the ventilation fans will be installed at a location away from the nearest NSRs. The potential locations for the ventilation fans (PFS-01, PFS-02, PFS-03 and PFS-04) are shown in Figure 5.22. Since there is no design information on the proposed PTIs, analysis has been conducted to determine the maximum allowable SWL of the ventilation fans based on the separation distance from the nearest NSRs. Table 5.29 below shows the maximum allowable SWL of the ventilation fans of the PTIs. Detailed calculation is shown in Appendix 5.17.

Table 5.29 Summary of Maximum Allowable SWL of the Ventilation Fans for the Planned PTIs

Location	PTI Description and Source IDs	Maximum Allowable SWL, dB(A)
		Day time & Evening time	Night-time
HPR Site	Mechanical Ventilation System at PTI-01 (PFS-01)	84	77
HPR Site	Mechanical Ventilation System at PTI-01 (PFS-02)	83	76
SHR Site	Mechanical Ventilation System at PTI-02 (PFS-03)	84	77
SHR Site	Mechanical Ventilation System at PTI-02 (PFS-04)	86	79

5.8.6 The predicted impact from planned and existing fixed noise sources identified in Table 5.11 at the identified representative NSRs is given in Table 5.30 and Table 5.31 with details appended in Appendix 5.18.

Table 5.30 Fixed Noise Source Impact due to Planned Fixed Noise Sources on Representative Existing and Planned NSRs

NSR/ NAP	Descriptions	Daytime/ Evening Period, Leq (30-min), dB(A)		Night-time Period, Leq (30-min), dB(A)
		Criteria ^[1]	Predicted Noise Levels	Criteria ^[1]	Predicted Noise Levels
E11/ E11_FN01	TWGHs Yau Tze Tin Memorial College	48	47	N/A	N/A
E16/ E16_FN01	Chun Tin House, Yan Tin Estate	48	48	41	41
E18/ E18_FN01	Village house at Tsz Tin Tsuen Road	44	43	38	36
E19/ E19_FN01	45C Po Tong ha	44	43	38	36
P2/ P2_FN01	Block 2, San Hing Road Site	58	48	49	47
P4/ P4_FN01	Block 4, San Hing Road Site	58	42	49	37
P17/ P17_FN01	Block 1, Hong Po Road Site	58	37	49	30
P20/ P20_FN01	Block 11, Hong Po Road Site	58	39	49	32
Note: [1] Criteria for existing NSRs was determined by the measured background noise levels (with +3 dB(A) façade correction) as they are lower than ANL-5. Criteria for E11 and E16 was determined by prevailing background noise level measured at B03 while criteria for E18 and E19 was determined by prevailing background noise level measured at B01. Prevailing background noise level measured at B04 is adopted for planned NSRs affected by planned fixed noise sources as it mimics the future settings of the planned NSRs (i.e. a high-rise residential housing site).

Table 5.31 Cumulative Fixed Noise Source Impact due to Existing and Planned Fixed Noise Sources on Representative Planned NSRs

NSR/ NAP	Descriptions	Daytime/ Evening Period, Leq (30-min), dB(A)		Night-time Period, Leq (30-min), dB(A)
		Criteria ^[1]	Predicted Noise Levels	Criteria ^[1]	Predicted Noise Levels
P2/ P2_FN01	Block 2, San Hing Road Site	70	48	60	47
P3/ P3_FN01	Block 3, San Hing Road Site	65	47	55	N/A ^[2]
P4/ P4_FN01	Block 4, San Hing Road Site	65	43	55	37
P7/ P7_FN01	Block 7, San Hing Road Site	65	43	55	N/A ^[2]
P9/ P9_FN01	Block 9, San Hing Road Site	65	52	55	N/A ^[2]
P17/ P17_FN01	Block 1, Hong Po Road Site	65	57	55	30
P20/ P20_FN01	Block 11, Hong Po Road Site	65	56	55	32
Note: [1] Criteria for both existing and planned NSRs was determined by ANL for cumulative fixed noise impact assessment. [2] No night-time operation of fixed noise sources nearby.

5.8.7 The results revealed that full compliance to the noise criteria can be achieved at all representative NSRs.

Mitigation of Fixed Noise Sources Impact

5.8.8 The recommended maximum SWL of the ventilation fans potentially to be installed at the PTIs should be reviewed with the final design of the PTIs during the detailed design stage. It is also recommended that a canopy and hanger wall should be provided at the ingress and egress of the PTIs and solid panels to be erected as necessary next to the bus bays to screen the line-of-sight of the PTI from the nearby NSRs. These mitigation measures will be reviewed at the later stage of the Project based on the detailed design of the PTI and the confirmed layout plan of the housing sites.

5.8.9 In addition, the following good practices should be incorporated into the design of the proposed PTIs and SHR SPS during detailed design stage:

· The pumps and noisy plants should be enclosed inside the SPS building structure;

· Proper selection of quiet plant aiming to reduce tonality at NSRs;

· Openings of ventilation systems should be located away from NSRs as far as practicable and oriented away from the NSRs to avoid direct line-of-sight to the concerned NSRs; and

· Installation of silencer/ acoustic louvre for the exhaust of ventilation system.

5.8.10 The feasibility, practicality and effectiveness of the above mitigation measures have been reviewed by the Project Engineer. As the fixed noise source impacts for planned and existing NSRs will be within respective noise criteria, the number of dwellings, classrooms and other sensitive receivers that will be exposed to noise impact exceeding the criteria set out in Annex 5 of the EIAO-TM is not expected.

Evaluation of Residual Fixed Noise Source Impact

5.8.11 Fixed noise source impacts arising from the Project can be properly mitigated by implementing the proposed noise mitigation measures. Residual noise impacts are thus not anticipated.

5.9 Rail Noise Impact Assessment

Assessment Approach and Methodology

Train Noise Source Term for Rail Noise Assessment

5.9.1 Train induced airborne noise at viaduct of WRL near Siu Hong MTR Station and at grade section of LRT near Lam Tei LRT Station are considered as the key sources of rail noise impact.

5.9.2 The identified three types of noise associated with the WRL train operation include:

· Rolling noise associated with the interaction between train wheel and rail;

· Noise from air conditioning units on top of each train car; and

· Structural re-radiated noise emitted from viaduct structure during train passing (associated with the West Rail Viaduct Structure with Multi Plenum System).

5.9.3 The section of LRT is at grade near Lam Tei LRT Station while a section of LRT near Siu Hong Station is on viaduct. The identified types of noise associated with the LRT train is rolling noise and structural re-radiated noise. Contribution from air conditioning noise is considered insignificant compared with the rolling noise.

WRL Source Term

5.9.4 The rail noise source terms of WRL were referred from the “West Rail Operation Noise Assessment Report” prepared by MTR Corporation Limited in July 2015. The report aims to assess the noise impact of WRL due to the change from 7 cars to 8 cars in accordance with the Environmental Permit (FEP-24/004/1998/J). Noise measurement has been conducted to obtain the in-situ noise source terms for trains running on typical viaduct sections with the installation of multi plenum system. The air conditioning units on top of the WRL train and the structure re-radiated noise from the viaduct were also measured during the study. All three train noise source terms are considered as the latest information and adopted in the WRL noise assessment for this Project.

5.9.5 Additional on-site measurements of structure re-radiated noise from viaduct section with and without mounted structure were conducted along the section of WRL within the assessment area. The noise measurement locations are appended in Appendix 5.19.

LRT Source Term

5.9.6 On-site measurements of rolling noise from at-grade section and structure re-radiated noise from viaduct section were conducted along the section of LRT within the assessment area. The noise measurement locations are appended in Appendix 5.19.

Rail Noise Assessment Procedures

5.9.7 The assessment is based on the “Calculation of Railway Noise 1995” (CRN) issued by the Department of Transport, UK. It would be carried out to assess various worst-case scenarios under normal, abnormal, transient and emergency operation. The railway will be divided into number of segments to address changes in traffic flow, speed, gradient of the track, turnout, or due to progress variation in screening along the railway lines. The propagation of rail noise to the noise sensitive receivers (NSRs) will be corrected by distance, ground and air absorption, screening effect by barriers, reflection, angle of view at the reception point, train speed, number of trains, etc.

5.9.8 Table 5.32 summarises each step of calculation and the assumptions in this approach. Table 5.33 includes the source term information based on on-site measurement, extracted from relevant studies, other literatures and updated information provided by MTRC (shown in Appendix 5.20) adopted for this study. The potential railway noise sources of WRL and LRT have been identified. Therefore, cumulative impact of WRL and LRT will be assessed.

Table 5.32 Procedures of Rail Noise Assessment

Steps	Assumptions / Remarks	Reference
Identify the extent of the site area to be affected by the air-borne noise from the rail operation; locate the assessment points at the representative NSRs	The first layer of planned NSRs located near WRL and LRT will be selected for rail noise prediction and evaluation	-
Identify the noise sources of rail operation	WRL: – The rolling noise is emitted through the gap between the train and the walkway on the viaduct of WRL. The multi-plenum system installed at the viaduct section of WRL absorbs some of the noise from train wheel-rail interaction. The effect of the system had been included in the source measurement in the previous study ^(A). – Noise from air conditioning units located on the roof of each car and source level was measured in the previous study ^(A). – Structural re-radiated noise generated from the vibration of the viaduct during train passing by was measured on site in this Study. LRT – Rolling noise and structure re-radiated noise were measured on site in this Study.	A
Identify the train type and the source term of the train	Refers to Table 5.33.	-
Calculate the SEL from Lmax at reference conditions	SEL = Lmax + 10log(L/V) +10.5 – 10log[(4D/(4D^2+1)) + 2tan^-1(1/(2D))] where D = d/L, d = perpendicular distance from the track (m), L = train length (m) and V = train speed (km per hour)	Equation 15.21 of D
Evaluate the correction due to train speed	+20 log10(V/Vref) in dB(A) where V = Train speed, Vref = Reference train speed	B
Correction of train frequency for 30 mins	+10 log10(N) in dB(A) where N = No. of trains per 30 minutes per direction	B
Incorporate Track Wear Correction	+3 dB(A)	B
Incorporate Joint/Turnout Correction (to represent the augmentation in noise due to thermal expansion joints)	With conservative assumption, +7.0 dB(A) for a representative 20 m segment	C
Evaluate the distance between the NSR and the track and make distance correction	-10 log10(d’/dref) in dB(A) where d’ = Slant distance from track to NSR and dref = Reference distance	B
Evaluate the angle of view and calculate angle of view correction	+10 log10(pθ/180 – cos2α sinθ) – 5 in dB(A) where θ = Angle of view and α = Acute angle between a line drawn through the NSR, parallel to the track, and the line bisecting the angle of view, θ	B
Incorporate Barrier Correction	Shadow Zone: – -21 dB(A) for δ > 2.5 m where δ is the path difference in meter – -7.75 log10(5.2 + 203 δ) dB(A) for 0≤ δ <2.5 m Illuminated Zone: – 0 dB(A) for δ > 0.4 m – 0.88 + 2.14 log10(10^-3 + δ) dB(A) for 0 ≤ δ <0.4 m	Chart 6(a) of B
Calculate the overall noise level from all rail segments including rolling noise, noise from air conditioning units and structural re-radiated noise	– Leq(30mins), overall at NSR= Leq(30mins), rolling + Leq(30mins), A/C + Leq(30mins), structure – Leq(30mins), rolling at NSR = SEL + Cspeed + Cfreq + Ctrack + Cjoint + Cdistance + Cangle + CBarrier + Cair absorption – Leq(30mins),A/C at NSR = SEL + Cfreq + Cdistance + Cangle + CBarrier – Leq(30mins), structure at NSR = SEL + Cfreq + Cdistance + Cangle + CBarrier+ Cair absorption	-
Incorporate Façade Correction	+2.5 dB(A)	B
Calculate the Lmax (2300 – 0700)	– Lmax, overall at NSR = Lmax, rolling + Lmax, A/C + Lmax, structure – Lmax, rolling at NSR = Lmax + Cspeed + Cfreq + Ctrack + Cjoint + Cdistance + Cangle + CBarrier – Lmax, structure at NSR = Lmax + Cfreq + Cdistance + Cangle + CBarrier	-
References: A. “West Rail Operation Noise Assessment Report” prepared by the MTRC (July 2015). B. “Calculation of Railway Noise 1995” issued by the Department of Transport, UK. C. EIA Report (Register No. AEIAR-028/1999) of “East Rail Extensions - Tai Wai to Ma On Shan, KCRC East Rail Extension”. D. Nelson, P. M. (ed.) (1987). Transportation Noise Reference Book, Butterworths.

Table 5.33 Input for Rail Noise Assessment

Parameters	WRL	LRT
Train type and no. of car	SP1900 (or equivalent), 9-car train (approximate 225 m long) ^*	LRV, 2 cars of total 40 m as conservative scenario ^‡
Rolling Noise	SEL Northbound = 81.4 dB(A) SEL Southbound = 80.7 dB(A) Lmax Northbound = 74.1 dB(A) Lmax Northbound = 73.4 dB(A) (8 cars running 130 km per hour at 25 m)^†	SEL Northbound (Segment LN0-LN2) = 78.0 dB(A) SEL Northbound (Segment LN3-LN13) = 75.3 dB(A) SEL Southbound (Segment LS0-LS2) = 73.5 dB(A) SEL Southbound (Segment LS3-LS13) = 74.1 dB(A) Lmax Northbound (Segment LN0-LN2) = 76.3 dB(A) Lmax Northbound (Segment LN3-LN13) = 73.1 dB(A) Lmax Southbound (Segment LS0-LS2) = 70.1 dB(A) Lmax Southbound (Segment LS3-LS13) = 70.7 dB(A) SEL and Lmax have been measured (2-car train running at 70 km per hour at 25 m)^##
Air Conditioning Noise	Lmax at viaduct = 48.8 dB(A) Lmax at station = 54.8 dB(A) (8 cars at 25 m)^† SEL of the Air Conditioning Noise refers to the following equation as stated in Equation 15.21 of Transportation Noise Reference Book: SEL = Lmax + 10log(L/V) +10.5 – 10log[(4D/(4D^2+1)) + 2tan^-1(1/(2D))] where D = d/L, d = perpendicular distance from the track (m), L = train length (m) and V = train speed (km per hour)	Not applicable as insignificant contribution^‡
Structural Re-radiated Noise	SEL = 62.8 dB(A) for non-enclosed viaduct structure Lmax = 58.6 dB(A) for non-enclosed viaduct structure SEL Northbound = 66.9 dB(A) for enclosed viaduct SEL Southbound = 67.0 dB(A) for enclosed viaduct Lmax Northbound = 63.0 dB(A) for enclosed via-duct Lmax Southbound = 63.9 dB(A) for enclosed viaduct SEL and Lmax at viaduct have been measured (8 cars at 25 m)^##	SEL = 60.5 dB(A) for non-enclosed viaduct structure Lmax = 60.3dB(A) for non-enclosed viaduct structure SEL and Lmax at viaduct have been measured (2-car train at 25 m)^##
Train frequency per 30 minutes per direction	14 number during peak daytime ^# 10 number during peak night-time^*	14 number during peak daytime ^# 14 number during peak night-time ^#
Train Speed for tracks within Assessment Area	Station speed, 50 km per hour^† Approach and leaving Station, 80 km per hour^†	70 km per hour ^#
Note: ^† “West Rail Operation Noise Assessment Report” prepared by the MTRC (July 2015). The same source term was adopted in the approved EIA Report for the Hung Shui Kiu Development (AEIAR-203/2016). ^* Information is adopted by referring Environmental Permit (Permit No. FEP-24/004/1998/J) for West Rail – Final Assessment Report West Kowloon to Tuen Mun Centre. ^# Updated information provided by MTRC. ^## Based on on-site noise measurements conducted for this EIA Study. Please refer to Appendix 5.19 for the details.

Prediction and Evaluation of Rail Noise Impacts

5.9.9 The predicted air-borne noise levels from WRL and LRT at the representative NSRs are presented in Table 5.34, with details provided in Appendix 5.21. Exceedance of rail noise impact was predicted at NAPs P1_RN01 and P1_RN05 to P1_RN07 (approximately 236 dwellings, assuming 1 NAP represents 2 dwellings per floor) during night-time. Mitigation measures will be required.

Table 5.34 Predicted Rail Noise Impact at Representative NSRs (Unmitigated)

NSR/ NAP	Descriptions	Unit of Criteria	Daytime/ Evening Period (0700-2300)		Night-time Period (2300-0700)
			Criteria	Impact	Criteria	Impact
P1/ P1_RN01	Block 1, San Hing Road Site	Leq (30 min) dB(A)	65	57-59	55	56-58
		Lmax dB(A)	-	-	85	77-80
P1/ P1_RN02	Block 1, San Hing Road Site	Leq (30 min) dB(A)	65	51-52	55	50-52
		Lmax dB(A)	-	-	85	75-76
P1/ P1_RN03	Block 1, San Hing Road Site	Leq (30 min) dB(A)	70	57-58	60	56-58
		Lmax dB(A)	-	-	85	76-79
P1/ P1_RN04	Block 1, San Hing Road Site	Leq (30 min) dB(A)	70	59-60	60	58-59
		Lmax dB(A)	-	-	85	77-80
P1/ P1_RN05	Block 1, San Hing Road Site	Leq (30 min) dB(A)	70	61-63	60	60-62
		Lmax dB(A)	-	-	85	77-81
P1/ P1_RN06	Block 1, San Hing Road Site	Leq (30 min) dB(A)	70	61-63	60	60-62
		Lmax dB(A)	-	-	85	78-82
P1/ P1_RN07	Block 1, San Hing Road Site	Leq (30 min) dB(A)	70	62-63	60	60-62
		Lmax dB(A)	-	-	85	77-81
P2/ P2_RN01 (1/F - 36/F)	Block 2, San Hing Road Site	Leq (30 min) dB(A)	65	48-55	55	47-54
		Lmax dB(A)	-	-	85	76-78
P2/ P2_RN01 (37/F - 44/F)	Block 2, San Hing Road Site	Leq (30 min) dB(A)	70	57	60	56
		Lmax dB(A)	-	-	85	75-76
P2/ P2_RN02	Block 2, San Hing Road Site	Leq (30 min) dB(A)	65	47-52	55	46-51
		Lmax dB(A)	-	-	85	75-77
P2/ P2_RN03 (1/F - 36/F)	Block 2, San Hing Road Site	Leq (30 min) dB(A)	65	46-52	55	45-51
		Lmax dB(A)	-	-	85	75-77
P2/ P2_RN03 (37/F - 44/F)	Block 2, San Hing Road Site	Leq (30 min) dB(A)	70	58	60	57
		Lmax dB(A)	-	-	85	75-76
P3/ P3_RN01 (1/F - 36/F)	Block 3, San Hing Road Site	Leq (30 min) dB(A)	65	48-50	55	48-49
		Lmax dB(A)	-	-	85	74-75
P3/ P3_RN01 (37/F - 44/F)	Block 3, San Hing Road Site	Leq (30 min) dB(A)	70	54-55	60	54
		Lmax dB(A)	-	-	85	74-75
Note: [1] Bolded values denote exceedance of the relevant noise criteria.

Mitigation of Rail Noise Impact

5.9.10 The provision of acoustic window is proposed at Block 1 of SHR Site to protect the NSRs from adverse rail noise impact. As the exceedance is up to 3 dB(A) and acoustic windows (baffle type) are able to reduce a noise level of 13 dB(A) when being assessed at indoor for buildings of similar façade orientation, with the provision of acoustic windows, the adverse rail noise impact at P1_RN01 and P1_RN05 to P1_RN07 can be mitigated.

5.9.11 The proposed location for acoustic window provision is shown in Figure 5.29. With the provision of acoustic windows, compliance of rail noise criteria is predicted at all representative NSRs. All 236 dwellings (assuming 1 NAP represents 2 dwellings per floor) will be protected by the proposed mitigation measures.

5.9.12 The proposed mitigation measures i.e. the provision of baffle type acoustic windows for the planned public housing development have been made known to HKHA and will be subject to further design by the HKHA. HKHA can further explore alternative options which can achieve the corresponding rail noise reduction during the detailed design stage. An Environmental Assessment Study for the planned public housing development will be conducted by HKHA in the detailed design stage to address the environmental impacts and to comply with relevant criteria.

Evaluation of Residual Rail Noise Impact

5.9.13 With the provision of baffle type acoustic windows, compliance of rail noise criteria is predicted at all representative NSRs. There would be no residual rail noise impact.

5.10 Conclusion

Construction Noise Impact

5.10.1 Construction noise associated with the use of PME for different stages of construction has been conducted. With the implementation of quieter construction method and practical mitigation measures including good site management practices, use of QPME, use of movable noise barrier, noise enclosure and noise insulating fabric, construction noise impacts at all of the neighbouring residential noise sensitive uses and educational institutions during normal school period would be controlled to acceptable levels. Minimum separation distance between schools and critical works area during school examination period have been recommended to mitigate potential adverse construction noise impact during examination period. With the recommended mitigation measures in place, construction noise impacts on all representative NSRs would comply with the relevant criteria.

Road Traffic Noise Impact

5.10.2 Operational road traffic noise impact on the representative existing and planned noise sensitive uses within and near the PDA and the junction improvement works have been predicted. To mitigate the road traffic noise impact on the existing and planned NSRs within and near the PDA and near the junction improvement at J13, a combination of noise mitigation measures have been recommended, including i) application of low noise road surfacing material along some sections of Project roads and other roads, ii) road side noise barriers along some sections of Project roads, iii) provision of acoustic windows for the public housing and iv) housing site boundary wall for the welfare facility at SHR Site. Restriction on locating the more noise sensitive welfare uses at façade facing the realigned Hong Po Road and access road in HPR Site has also been recommended. With the implementation of mitigation measures, the predicted traffic noise levels of the existing NSRs and planned NSRs would comply with the relevant criteria or the noise contribution from Project road is <1.0 dB(A). For junction improvement works, the traffic noise levels at the existing and planned NSRs near the junctions, except junction J13, would comply with the relevant criteria or the change of noise level is insignificant. Direct mitigation measures for J13 and mitigation measures at Tuen Mun Area 54 Site 5 have been recommended. With the implementation of mitigation measures, the predicted traffic noise levels of the NSRs near J13 would comply with the relevant criteria.

5.10.3 The proposed additional mitigation measures at the proposed housing sites (i.e. the provision of acoustic windows for some planned public housing and housing site boundary wall near the welfare facility and restriction of certain type of welfare uses at some facades) are made known to HKHA and subject to further study by the HKHA. HKHA can further explore alternative options which can achieve corresponding traffic noise reduction during the detailed design stage. An Environmental Assessment Study for the planned public housings will be conducted by HKHA in the detailed design stage to address environment impacts and comply with relevant criteria.

Fixed Noise Source Impact

5.10.4 Fixed noise source impact assessment has been conducted for all existing and planned fixed noise sources. Noise impact from planned fixed plant could be effectively mitigated by implementing noise mitigation measure at source. With the adoption of the proposed maximum allowable SWLs of the ventilation fans for the proposed PTIs, the impact noise levels at the representative NSRs would comply with the relevant noise criteria for both existing and planned fixed noise sources. The PTIs will be enclosed and designed to avoid direct line-of-sight to the NSRs. Therefore, adverse fixed noise sources impact on the NSRs is not anticipated. The design of the PTIs and the proposed maximum allowable SWLs of the ventilation fans shall be reviewed with the final design during the detailed design stage.

Rail Noise Impact

5.10.5 Rail noise impact assessment has been conducted for the planned NSRs at the SHR Site potentially affected by the WRL and LRT operation. With the implementation of mitigation measure in the form of provision of acoustic windows, the impact noise levels at all representative NSRs would comply with the relevant rail noise criteria. Therefore, adverse rail noise impact on the planned NSRs is not anticipated. HKHA can further explore alternative options which can achieve corresponding rail noise reduction during the detailed design stage. An Environmental Assessment Study for the planned public housings will be conducted by HKHA in the detailed design stage to address environment impacts and comply with relevant criteria.

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