Contents

 

                                                                                                                                                                        Page

1            Introduction  1

1.1           Background  1

1.2           Purpose of the Manual 2

2            Project Description  5

2.1           General Description of the Project 5

2.2           Designated Project 7

2.3           Concurrent Projects  11

2.4           Construction Programme  12

3            Project Organization  16

3.1           Project Organization  16

4            Environmental Submission  19

4.1           Introduction  19

4.2           Environmental Management Plan  19

4.3           Waste Management Plan  19

4.4           Construction Method Statement 20

5            Air Quality Impact 21

5.1           Introduction  21

5.2           Mitigation Measures  21

5.3           Air Quality Parameters  21

5.4           Monitoring Equipment 21

5.5           Laboratory Measurement / Analysis  23

5.6           Monitoring Locations  24

5.7           Baseline Monitoring  25

5.8           Impact Monitoring  26

5.9           Action and Limit Levels  26

5.10         Event and Action Plan  28

6            Noise Impact 30

6.1           Introduction  30

6.2           Mitigation Measures  30

6.3           Noise Monitoring Parameters  34

6.4           Monitoring Equipment 35

6.5           Monitoring Locations  35

6.6           Baseline Monitoring  38

6.7           Impact Monitoring  38

6.8           Action and Limit Levels  40

6.9           Event and Action Plan  41

7            Water Quality Impact 43

7.1           Introduction  43

7.2           Mitigation Measures  43

7.3           Water Monitoring Parameters  43

7.4           Monitoring Equipment 44

7.5           Laboratory Measurement / Analysis  46

7.6           Monitoring Locations  46

7.7           Baseline Monitoring  47

7.8           Impact Monitoring  48

7.9           Action and Limit Levels  49

7.10         Event and Action Plan  50

8            Sewage & sewerage treatment implications  53

8.1           Introduction  53

8.2           Mitigation Measures  53

9            Waste Management Implications  56

9.1           Introduction  56

9.2           Mitigation Measures  56

9.3           Waste EM&A Requirements  57

9.4           Site Audit Requirements  57

10          Land Contamination Impact 58

10.1         Introduction  58

10.2         Proposed Site Investigation for Potentially Contaminated Areas  58

10.3         Submission Requirements of CAR, RAP and RR   58

11          Ecology  60

11.1         Introduction  60

11.2         Mitigation Measures  60

11.3         Audit Requirement 78

11.4         Monitoring Requirements  79

12          Fisheries  85

12.1         Introduction  85

12.2         Mitigation Measures  85

12.3         Monitoring  86

12.4         Audit Requirement 87

12.5         Monitoring Requirements  87

13          Landscape and Visual Impact 88

13.1         Introduction  88

13.2         Mitigation Measures  88

13.3         Baseline monitoring  89

13.4         Environmental Monitoring and Audit Requirement 90

13.5         Event and Action Plan  92

14          Impact on Cultural Heritage  94

14.1         Terrestrial Archaeology  94

14.2         Marine Archaeology  97

14.3         Built Heritage  98

15          Site Environmental Audit 99

15.1         Site Inspection  99

15.2         Environmental Compliance  100

15.3         Choice of Construction Method  101

15.4         Environment Complaints  101

16          Reporting  103

16.1         General 103

16.2         Baseline Monitoring Report 103

16.3         Monthly Monitoring Reports  104

16.4         Final EM&A Review Reports  109

16.5         Data Keeping  112

16.6         Interim Notifications of Environmental Quality Limit Exceedances  112

 

Figures

Figure 1.1              Location of Project

Figure 1.2              Location of Associated Infrastructure Works

Figure 2.1              Locations of Designated Projects

Figure 2.2              Locations of Concurrent Projects

Figure 2.3a            Locations of Development Phasing in TCE

Figure 2.3b           Locations of Development Phasing in TCW

Figure 5.1              Locations of Construction Dust Monitoring Station

                               (Sheet 1 of 3)

Figure 5.1a            Locations of Construction Dust Monitoring Station

                               (Sheet 2 of 3)

Figure 5.1b           Locations of Construction Dust Monitoring Station

                               (Sheet 3 of 3)

Figure 6.1              Mitigation Measures for Road Traffic Noise and Railway Noise at 2023 (Sheet 1 of 3)

Figure 6.1a            Mitigation Measures for Road Traffic Noise and Railway Noise at 2023 (Sheet 2 of 3)

Figure 6.1b           Mitigation Measures for Road Traffic Noise and Railway Noise at 2023 (Sheet 3 of 3)

Figure 6.2              Mitigation Measures for Road Traffic Noise and Railway Noise at 2025 (Sheet 1 of 3)

Figure 6.2a            Mitigation Measures for Road Traffic Noise and Railway Noise at 2025 (Sheet 2 of 3)

Figure 6.2b           Mitigation Measures for Road Traffic Noise and Railway Noise at 2025 (Sheet 3 of 3)

Figure 6.3              Mitigation Measures for Road Traffic Noise and Railway Noise at 2027 (Sheet 1 of 5)

Figure 6.3a            Mitigation Measures for Road Traffic Noise and Railway Noise at 2027 (Sheet 2 of 5)

Figure 6.3b           Mitigation Measures for Road Traffic Noise and Railway Noise at 2027 (Sheet 3 of 5)

Figure 6.3c            Mitigation Measures for Road Traffic Noise and Railway Noise at 2027 (Sheet 4 of 5)

Figure 6.3d           Mitigation Measures for Road Traffic Noise and Railway Noise at 2027 (Sheet 5 of 5)

Figure 6.4              Mitigation Measures for Road Traffic Noise and Railway Noise at 2045 (Sheet 1 of 6)

Figure 6.4a            Mitigation Measures for Road Traffic Noise and Railway Noise at 2045 (Sheet 2 of 6)

Figure 6.4b           Mitigation Measures for Road Traffic Noise and Railway Noise at 2045 (Sheet 3 of 6)

Figure 6.4c            Mitigation Measures for Road Traffic Noise and Railway Noise at 2045 (Sheet 4 of 6)

Figure 6.4d           Mitigation Measures for Road Traffic Noise and Railway Noise at 2045 (Sheet 5 of 6)

Figure 6.4e            Mitigation Measures for Road Traffic Noise and Railway Noise at 2045 (Sheet 6 of 6)

Figure 6.5              Locations of Construction Airborne Noise Monitoring Stations  (Sheet 1 of 5)

Figure 6.5a            Locations of Construction Airborne Noise Monitoring Stations  (Sheet 2 of 5)

Figure 6.5b           Locations of Construction Airborne Noise Monitoring Stations  (Sheet 3 of 5)

Figure 6.5c            Locations of Construction Airborne Noise Monitoring Stations  (Sheet 4 of 5)

Figure 6.5d           Locations of Construction Airborne Noise Monitoring Stations  (Sheet 5 of 5)

Figure 6.6              Locations of Traffic Noise Monitoring Stations  (Sheet 1 of 4)

Figure 6.6a            Locations of Traffic Noise Monitoring Stations  (Sheet 2 of 4)

Figure 6.6b           Locations of Traffic Noise Monitoring Stations  (Sheet 3 of 4)

Figure 6.6c            Locations of Traffic Noise Monitoring Stations  (Sheet 4 of 4)

Figure 7.1              Locations of Water Quality Monitoring Stations (Sheet 1 of 2)

Figure 7.1a            Locations of Water Quality Monitoring Stations (Sheet 2 of 2)

Figure 14.1            Graphic Overview of Recommendations and Executed Sampling Locations

 

 


 

Appendices

Appendix 2.1        Tentative Construction Programme

Appendix 3.1        Project Organization for Environmental Works

Appendix 4.1        Environmental Mitigation Implementation Schedule (EMIS)

Appendix 5.1        Sample Data Sheet for TSP Monitoring

Appendix 6.1        Sample Data Sheet for Construction Noise Monitoring

Appendix 15.1      Proactive Environmental Protection Proforma

Appendix 16.1      Sample Template for Interim Notification

 

 

 

 

 

 


1                                Introduction

1.1                         Background

1.1.1.1           The study in North Lantau including Tung Chung area started since the Port and Airport Development Strategy in 1989 for the study on the construction of replacement international airport at Chek Lap Kok.   Since then, various studies had been conducted including North Lantau Development Study in 1990, Territorial Development Strategic Review in 1996 and Remaining Development in Tung Chung and Tai Ho – Comprehensive Feasibility Study (CFS) in 1997. The CFS in 1997 showed that it was feasible for Tung Chung and Tai Ho areas to accommodate a population target of about 334,000 in anticipation of the projected territory-wide demand by 2011 estimated at that time. Phases 1, 2 and 3A of Tung Chung New Town were completed in 2003.

1.1.1.2           With the changes in planning circumstances and population target outlined in the above paragraphs, this Tung Chung New Town Extension Study will focus on the remaining development of Tung Chung covering possible development areas (PDAs) at Tung Chung East (TCE) and Tung Chung West (TCW) to meet the territorial long-term housing, social, economic and environmental needs with existing and committed developments in existing Tung Chung New Town being taken as the given constraints in general.  This study is also required to review and establish the feasibility of the remaining development of Tung Chung as well as to prepare documents to meet the relevant statutory requirements.

1.1.1.3           A previous Project Profile (No. PP-470/2012) for the Tung Chung New Town Development Extension was submitted on 16 July 2012 and an EIA Study Brief (SB) (EIA SB No. ESB-251/2012) was subsequently issued on 28 August 2012 under the EIAO. Since then, the Project Proponent has been proactively conducting a series of public engagement exercises (including forums and workshops) to collate views and opinions from stakeholders, green groups and local communities etc. In parallel to the public engagement process, the planning and engineering designs of the Project have also been progressing and evolving to address various constraints and development needs as well as the comments collated in public engagement exercises.

1.1.1.4           These comments have been appropriately considered in formulating the Recommended Outline Development Plan (RODP). As such, the original PDA boundaries as presented in the previous EIA SB (EIA SB No.: ESB-251/2012) are refined and a number of associated infrastructures would also be required to support the development within the RODP. The key changes include the following:

·         Withdrawal of 50ha reclamation at TCW as proposed in Stage 2 Public Engagement;

·         Removal of possible theme park/ major recreational uses at TCE; and

·         Addition of marina; and

·         Addition of associated infrastructures.

1.1.1.5           Because of the abovementioned changes in Project elements, the Project Proponent had submitted another Project Profile (ref: PP-519/2014) for application of a new EIA SB on 17 December 2014. The Director of Environmental Protection (DEP) then issued an EIA SB (EIA SB No.: ESB-283/2014) on 28 January 2015 under the EIAO.

1.1.1.6           During the public inspection period of the Project Profile (PP-519/2014), comments from the public were received and had been considered and incorporated as appropriate in the EIA SB (ESB-283/2014) issued on 28 January 2015.  Nevertheless, the Project Proponent had also pro-actively reviewed those comments and had studied to make provisions for the possible elements which could further enhance the development plan from environmental perspective As such, a revised Project Profile for this study (ref: PP-523/2015) for application of a new EIA SB had been submitted on 18 March 2015. The DEP then issued an EIA SB (EIA SB No.: 285/2015) on 17 April 2015 under the EIAO.

1.1.1.7           The location of the Project as presented in the EIA SB is shown in Figure 1.1. In addition, there are also associated infrastructure works (e.g. drainage connection, fresh water supply, flushing water supply) required to support the development and the respective pipe networks are illustrated in Figure 1.2.

1.1.1.8           Descriptions of the Project elements have been further elaborated and presented in Section 2.1.

1.2                         Purpose of the Manual

1.2.1.1           The purposes of this Environmental Monitoring and Audit (EM&A) Manual are to :

·               Guide the set up of an EM&A programme to ensure compliance with the EIA recommendations;

·               Specify the requirements for monitoring equipment;

·               Propose environmental monitoring points, monitoring frequency etc;

·               Propose Action and Limit Levels; and

·               Propose Event and Action Plans.

1.2.1.2           This Manual outlines the monitoring and audit programme for the construction and operation of the proposed Project and provides systematic procedures for monitoring, auditing and minimizing environmental impacts.

1.2.1.3           Hong Kong environmental regulations and the Hong Kong Planning Standards and Guidelines (HKPSG) have served as environmental standards and guidelines in the preparation of this Manual. In addition, this EM&A Manual has been prepared in accordance with the requirements stipulated in Annex 21 of the Technical Memorandum on the EIA Process (TM-EIAO).

1.2.1.4           This Manual contains the following information:

·               Responsibilities of the Contractor, the Engineer or Engineer’s Representative (ER), Environmental Team (ET), and the Independent Environmental Checker (IEC) under the context of EM&A;

·               Project organization for the EM&A works;

·               The basis for, and description of the broad approach underlying the EM&A programme;

·               Details of the methodologies to be adopted, including all laboratories and analytical procedures, and details on quality assurance and quality control programme;

·               The rationale on which the environmental monitoring data will be evaluated and interpreted;

·               Definition of Action and Limit Levels;

·               Establishment of Event and Action Plans;

·               Requirements for reviewing pollution sources and working procedures required in the event of non-compliance with the environmental criteria and complaints; and

·               Requirements for presentation of environmental monitoring and audit data and appropriate reporting procedures.

1.2.1.5           For the purpose of this manual, the ER shall refer to the Engineer as defined in the Construction Contract, in cases where the Engineer’s powers have been delegated to the ER, in accordance with the Construction Contract. The ET leader, who shall be responsible for and in charge of the ET, shall refer to the person delegated the role of executing the environmental monitoring and audit requirements.


 

2                                Project Description

2.1                         General Description of the Project

2.1.1.1           As described in the latest EIA SB (EIA SB No.: ESB-283/2014), the Project comprises the following elements 

·              129.1 ha reclamation area (120.5 ha for TCE and 8.6 ha for the Road P1 (Tung Chung – Tai Ho Section));

·              124.5 ha existing land (4 ha for TCE, 0.5 ha for the Road P1 (Tung Chung – Tai Ho Section) and 120 ha for TCW));

·              Construction of a Primary Distributor Road with total length of approximate 1.6km connecting Tung Chung to Tai Ho to support further development in Tung Chung;

·              Construction of District Distributor Roads with total length of approximate 3.5km within PDAs at TCE and TCW;

·              Construction of sewage pumping stations, some with individual capacity more than 2,000m3/day within PDAs at TCE and TCW;

·              Upgrading the existing Chung Mun Road Sewage Pumping Station from existing capacity of 12,360m3/day to a proposed capacity of approximately 20,660m3/day;

·              Land formation of a marina with about 95 berths at the PDA at TCE as part of the reclamation;

·              Land formation  of an outdoor sporting facility with a capacity of over 10,000 persons at the PDA at TCE as part of the reclamation;

·              Land formation of a petrol filling station with an area of about 800m2 at the PDA at TCE as part of the reclamation;

·              Construction of two service reservoirs, including one for fresh water and the other for flushing water, with capacities of 55,000 m3 and 11,000 m3 respectively;

·              Construction of about 4 km long of dual rising mains at TCE connecting a proposed sewage pumping station within the PDA at TCE to the existing Siu Ho Wan (SHW) Sewage Treatment Works (STW);

·              Construction of waterfront promenade at the coastal area of proposed Town Park at the PDA at TCW;

·              Revitalisation of the existing channelized section of Tung Chung Stream at the PDA at TCW and partly proposed as River Park;

·              Proposed River Park in the land adjacent to the immediate upstream of the channelized section of Tung Chung Stream up to Shek Mun Kap at the PDA at TCW;

·              A comprehensive network of cycle track (about 12km long in total length) along the proposed distributor roads, waterfront promenade, walkways and along future Road P1 (Tung Chung – Tai Ho Section);

·              Land formation of a possible cycle park with an area of approximately 1.4ha surrounded by the slip roads connecting the future Tai Ho Interchange to integrate with the cycle tracks in TCE for forming a better cycle track network as part of the reclamation;

·              Provision of Sustainable urban drainage system within TCW which comprises dual-purpose stormwater attenuation and treatment ponds;

·              Provision of sewerage system for the existing unsewered villages and proposed residential developments within TCW ; and

·              Space provisions of facilities for possible green initiatives such as regional energy efficiency system and environmentally friendly transport systems (e.g. electric buses, electric cars and bicycle sharing system), etc. to promote environmental performance. (Note: The initiative of District Cooling System (DCS) in Tung Chung will be separately considered. Should the initiative is to be put forward in future, the DCS will be implemented under separate project subject to further study.)

2.1.1.2           In addition, there are also associated infrastructure works (e.g. drainage connection, fresh water supply, flushing water supply) required to support the development. The respective pipe networks are illustrated in Figure 1.2.

2.1.1.3           According to the latest arrangement, the construction of two possible railway stations, with one at TCE and the other one at TCW, will be carried out by the rail operator and hence will not be covered under this Project. Since the railway system including railway stations and railway lines is a Designated Project under the EIAO, the rail operator shall conduct a separate EIA under the EIAO.

2.2                         Designated Project

2.2.1.1           The Study is a Designated Project (DP) under Item 1 Schedule 3 of EIAO - Engineering feasibility study of urban development projects with a study area covering more than 20 ha or involving a total population of more than 100,000. For any future change(s) after the approval of this EIA report, the following steps will be taken:

a)      Should the change(s) involve(s) a designated project item under Schedule 2 of the EIAO, the requirements under the EIAO will be complied with; and

b)      Should the change(s) not involve any designated project items under Schedule 2 of the EIAO, prevailing planning mechanisms and standards will be followed and relevant EIA findings will be conformed to.”

2.2.1.2           According to the RODP, a number of work components would fall under various Schedule 2 DPs categories. A list of Schedule 2 DPs is summarised in Table 2.1 below and are further described in the sequent sections. The locations of these DPs under the Project are shown in Figure 2.1.

Table 2.1    Summary of scheduled 2 DPs

Ref. Category No.

Designated Projects

Ref. in RODP

Environmental Permit (EP) Holder

Part I, A.1

Primary distributor roads and district distributor roads

Proposed road networks within PDA at TCE and TCW, Road P1 (Tung Chung to Tai Ho Section) and Chung Mun Road

CEDD [1]

Part I, A.2

A railway and its associated stations.

Proposed railway stations at TCE and TCW

Future rail Operator

Part I, A.8

A road more than 100m in length between abutments

The 400m long viaduct section of Road P1 (Tung Chung to Tai Ho Section) connecting to Tai Ho Interchange

CEDD [1]

Part I, C.l

Reclamation works (including associated dredging works) more than 5 ha in size

Reclamation area at TCE together with the necessary reclamation for Road P1 extension

CEDD

Part I, F.3(b)

Sewage pumping stations with installed capacity of more than 2000m3/d located at less than 150m from existing/ planned receivers

Proposed sewage pumping stations within PDA at TCE and TCW

CEDD [1]

Part I, I.1(b)

A drainage channel or river training and diversion works which discharges or discharge into an area which is less than 300m from the nearest boundary of a planned conservation area and coastal protection area

Revitalisation of the existing channelized section of Tung Chung Stream at the PDA at TCW and possible drainage outlets of the sustainable urban drainage system

CEDD [1]

Part I, O.2

A marina designed to provide moorings or dry storage for not less than 30 vessels used preliminarily for pleasure or recreation

Proposed marina to the north of PDA at TCE

Future marina operator

Part I, O.7

An outdoor sporting facility with a capacity to accommodate more than 10,000 persons

Proposed sports ground to the east of PDA at TCE

Future operator

Part I, Q.1

Any works partly or wholly in a gazette proposed conservation area

Earthworks within CA zone

CEDD [1]

                         Note:

[1] CEDD will liaise with the relevant departments for transfer of the operation responsibilities of these DPs through Further Environmental Permits

Part I, A.1 - Primary distributor roads and district distributor roads

2.2.1.3           The internal roads in TCE consist of 4 district distributors with 2 lanes per direction and a number of local distributors with single lane per direction. Most of the internal roads are constructed at-grade, except a section of approximately 140m long in a form as a depressed road in order to encourage through pedestrian walking across the town centre and hence minimise the environmental impact. While in TCW, the internal roads consist of district and local distributors with typical at-grade road construction except the bridge structures across Tung Chung Stream. The existing Chung Mun Road will be extended to serve as a district distributor with two lanes per direction, while the local distributors will be single lane road. The remaining roads in the TCW development are local distributors that provide links to specific land parcels within the development. In terms of existing roads in the vicinity of the TCW development, Tung Chung Road will be maintained as a two-lane (both direction) rural road, while Yu Tung Road (district distributor) and Chung Yan Road (local distributor) will be two lanes per direction. In addition, the Road P1 (Tung Chung to Tai Ho Section) itself is a primary distributor road.

Part I, A.2 - A railway and its associated stations

2.2.1.4           According to the development direction of Tung Chung New Town and further feasibility study, new railway stations at TCE and TCW will be required to add to serve the increased population in TCE and TCW. Realignment of existing Tung Chung Line would be necessary to connect the proposed railway station near the southern edge of PDA boundary of TCE, while the proposed railway station at TCW would be located adjacent to Yu Tung Road near Area 39 and Yat Tung Estate. The construction and operation of new railway stations and the associated modification of railway will be conducted by future rail operator.

2.2.1.5           Since the Project involves modification of railway and a new railway station, it will be a DP under Item A.2 of Schedule 2, Part I of EIAO.

Part I, A.8 - A road more than 100m in length between abutments

2.2.1.6           Road P1 (Tung Chung to Tai Ho Section) aims to connect the existing Ying Hei Road to the proposed Tai Ho Interchange to serve the major external highway connection for TCE. The Road P1 comprises 3 elements: 1) 1km at-graded road, 2) one at-graded roundabout and 3) a viaduct section of approximately 400m connecting the Tai Ho Interchange.

Part I, C.1 - Reclamation works (including associated dredging works) more than 5 ha in size

2.2.1.7           As mentioned in Section 2.1, the Project involves a reclamation of 120.5 hectare of land for formation of TCE and 8.6 hectare of land for extension of Road P1 (Tung Chung to Tai Ho Section).

Part I, F.3(b) - Sewage pumping stations with installed capacity of more than 2000m3/d located at less than 150m from existing/ planned receivers

2.2.1.8           Land parcels with “Government” landuse have been reserved in the development to provide governmental facilities including sewage pumping station (SPS), sports grounds/ sports centre, clinic etc to support the development. According to the RODP, 2 SPSs and 4 SPSs will be proposed at TCE and TCW respectively, in which 5 of them, including TCE SPS (East), TCE SPS (West), TCV SPS (East), TCV SPS (West) and upgraded Chung Mun Road SPS as shown in Figure 1.1, have an individual capacity over 2,000m3/day.

 

Part I, I.1(b) - A drainage channel or river training and diversion works which discharges or discharge into an area which is less than 300m from the nearest boundary of a planned conservation area and coastal protection area

2.2.1.9           As highlighted in 2015 Policy Address, the government is promoting the concept of revitalising water bodies in large-scale drainage improvement works and planning drainage networks. In order to enhance the ecological connection between the upstream and downstream of Tung Chung Stream, it is proposed to revitalise the existing channelized section of Tung Chung Stream with a total length of approximately 625m long.

2.2.1.10      In addition, though the detailed design of the sustainable urban drainage system (SUDS) is yet to be confirmed and will be subject to further design, there is a possibility that the drainage outlet of the SUDS will be assigned within the Conservation Area (CA) or Coastal Protection Area (CPA) zone to discharge the treated runoff to the Tung Chung Stream.

Part I, O.2 - A marina designed to provide moorings or dry storage for not less than 30 vessels used preliminarily for pleasure or recreation

2.2.1.11      In order to revitalise the coastline, creating consumer activities and job opportunities, a marina is proposed to locate adjacent to Tung Chung Channel, with an area size of about 1.4 hectares to accommodate approximately 95 berths and associated berthing facilities at TCE. The construction and operation of the marina will be conducted by future marina operator.

Part I, O.7 - An outdoor sporting facility with a capacity to accommodate more than 10,000 persons

2.2.1.12      An area of 3ha is reserved for a sports ground. The requirement on capacity of the proposed sports ground will be subject to further design. For the purpose of this EIA Study, an estimation of seating capacity for 10,000 spectators has been assumed for relevant environmental impact assessments. Should the sports ground is designed to accommodate more than 10,000 people, it will be classified as a DP under Schedule 2 of the EIAO, and a separate EIA study is expected to be conducted by its respective project proponent to fulfil the relevant statutory requirements.

 

Part I, Q.1 – Any works partly or wholly in a gazette proposed conservation area

2.2.1.13      While the amount of works within CA or CPA zone would be minimized, there is still a possibility that minor earthworks would be required partly or wholly within the CA or CPA zone.

Possible Minor Works

2.2.1.14      It should also be noted that minor maintenance works including minor works to connection roads, minor public utility works (e.g. installation of telecommunication wires), earthworks relating to agriculture, footpaths/ trails and facilities relating to sitting out areas, provision of water pipes etc would be anticipated within the proposed conservation areas and sites of cultural heritage. However, according to the Schedule 2 of the EIAO, these minor works are not classified as designated project items and thus EP application is not required.

2.2.1.15      The locations of these DPs under the Project are shown in Figure 2.1.

2.3                         Concurrent Projects

2.3.1.1           In order to assess the cumulative impacts, a review of best available information to identify a number of other projects that are undergoing planning, design, construction and/or operation within the construction and/or operation period for this Study has been conducted and a list of the tentative concurrent projects identified at this stage is summarised below and Figure 2.2 shows the locations of these concurrent projects.

·                Construction of additional sewage rising mains and rehabilitation of the existing sewage rising main between Tung Chung and Siu Ho Wan;

·                Hong Kong - Zhuhai - Macao Bridge Hong Kong Boundary Crossing Facilities (HZMB HKBCF, being constructed);

·                Hong Kong - Zhuhai - Macao Bridge Hong Kong Link Road (HZMB HKLR, being constructed);

·                Tuen Mun - Chek Lap Kok Link (TM-CLKL, being constructed);

·                Proposed New Contaminated Mud Marine Disposal Facility at Airport East / East Sha Chau Area;

·                Integration of Siu Ho Wan and Silver Mine Bay Water Treatment Works;

·                Organic Waste Treatment Facilities Phase 1 (OWTF);

·                Possible Lantau Logistics Park;

·                Expansion of Hong Kong International Airport into a Three-Runway System (3RS);

·                Further Landscape Enhancement to North Lantau Highway (NLH);

·                Planned developments in the existing Tung Chung New Town such as residential developments at Tung Chung Area 27, Area 39, Area 54, Area 55 and Area 56 and hotel development at Tung Chung Area 53a;

·                Greening Master Plans for New Territories South West – Investigation, Design and Construction;

·                North Commercial District (NCD) of Hong Kong International Airport (HKIA);

·                Dredging, Management and Capping of Contaminated Sediment Disposal Facility to the South of The Brothers;

·                Proposed The Brothers Marine Park;

·                Topside Development at HZMB HKBCF;

·                Cumulative Environmental Impact Assessment Study for the Three Potential Nearshore Reclamation Sites in the Western Waters of Hong Kong;

·                Harbour Area Treatment Scheme (HATS) Stage 2A;

·                Providing Sufficient Water Depth for Kwai Tsing Container Basin and its Approach Channel;

·                Cross Boundary Hub in Siu Ho Wan;

·                Leisure and Entertainment Node at Sunny Bay;

·                Marina in TCE;

·                Sports ground in TCE; and

·                Proposed Railway Station at TCE and TCW.

2.4                         Construction Programme

2.4.1.1           According to the current information, the Tung Chung New Town Extension will be commissioned in phases with first population intake in Year 2023. The construction work is targeted to commence in Year 2017 and completed by Year 2030 for full population intake. The implementation programme is shown in Appendix 2.1.

2.4.1.2           Summary of construction period of the key construction works is summarized in the following table.

Table 2.2    Summary of key construction works

Stages

Key Construction Works

Construction Period

Advanced Works

Advance Works

·   Ma Wan Chung Improvement Works

·   Tung Chung Road North

·   Access Road to RO

·   Early 2017 to Mid 2017

Reclamation Works

Reclamation Works

·   Tung Chung East Reclamation

·   Box Culvert Extension

·   Road P1 (Tung Chung – Tai Ho Section) Reclamation

·   Late 2017 to Late 2023

Tung Chung East

Phase 1 Infrastructures

·   Road Networks and Cycle Tracks in TCE Phase 1

·   Fresh Water Supply w/ pipelines in TCE Phase 1

·   Salt Water Supply w/ pipelines in TCE Phase 1

·   Saltwater In-take Pumping Station (by others)

·   Drainage w/ pipelines in TCE Phase 1

·   Sewerage w/ pipelines in TCE Phase 1

·   New Sewage Pumping Station - TCE West SPS

·   Waterfront Promenade - Phase 1 (by others)

·   Early 2020 to Mid/Late 2023

·   Refuse Collection Point (by others)

·   General Clinic / Health Centre (by others)

·   Petrol Filling Station (by others)

·   Early 2020 to Late 2023

Phase 2 Infrastructures

·   Road Networks and Cycle Tracks in TCE Phase 2

·   Fresh Water Supply w/ pipelines in TCE Phase 2

·   Salt Water Supply w/ pipelines in TCE Phase 2

·   Drainage w/ pipelines in TCE Phase 2

·   Sewerage w/ pipelines in TCE Phase 2

·   Water Front Promenade - Phase 2 (by others)

·   Late 2020 to Late 2024

Phase 3 Infrastructures

·   Road Networks and Cycle Tracks in TCE Phase 3

·   Salt Water Supply w/ pipelines in TCE Phase 3

·   Fresh Water Supply w/ pipelines in TCE Phase 3

·   Drainage w/ pipelines in TCE Phase 3

·   Sewerage w/ pipelines in TCE Phase 3

·   Water Front Promenade - Phase 3 (by others)

·   Late 2022 to Late 2027

Phase 4 Infrastructures

·   Road Networks and Cycle Tracks in TCE Phase 4

·   Drainage w/ pipelines in TCE Phase 4

·   Salt Water Supply w/ pipelines in TCE Phase 4

·   Fresh Water Supply w/ pipelines in TCE Phase 4

·   Sewerage w/ pipelines in TCE Phase 4

·   New Sewage Pumping Station - TCE East SPS

·   Water Front Promenade - Phase 4 (by others)

·   Police Married Quarters (C0-2) (by others)

·   District Police Station (C0-3) (by others)

·   Secondary School (E-01) (by others)

·   Primary School (E-02) (by others)

·   Primary School (E-03) (by others)

·   Undesignated GIC (E-04)

·   Sports Ground / Sports Centre (F-01) (by others)

·   Primary School (F-02) (by others)

·   Primary School (F-03) (by others)

·   Secondary School (F-04) (by others)

·   Boatyard and Maintenance Area (F-05) (by others)

·   Sports Ground / Sports Centre (G-01) (by others)

·   Post Secondary Institution (G-02) (by others)

·   Fire Station (G-03) (by others)

·   Early 2024 to Early 2030

Tung Chung West

Phase 1 Infrastructures

·   Road Networks and Cycle Track in TCW Phase 1

·   Fresh Water Supply w/ pipelines in TCW Phase 1

·   Salt Water Supply w/ pipelines in TCW Phase 1

·   Drainage w/ pipelines in TCW Phase 1

·   Attenuation ponds and pumping stations for Tung Chung West in TCW Phase 1

·   De-channalisation of channelised portion of Tung Chung Stream

·   Sewerage w/ pipelines in TCW Phase 1

·   New Sewage Pumping Station  - TCV East SPS

·   Early 2019 to Late 2023

Phase 2 Infrastructures

·   Road Networks and Cycle Track in TCW Phase 2

·   Bridges in Tung Chung West

·   Fresh Water Supply w/ pipelines in TCW Phase 2

·   Salt Water Supply w/ pipelines in TCW Phase 2

·   Drainage w/ pipelines in TCW Phase 2

·   Attenuation ponds and pumping stations for Tung Chung West Phase 2

·   Polder Scheme for Tung Chung West

·   Sewerage w/ pipelines in TCW Phase 2

·   New Sewage Pumping Station

·   Upgrading Existing Sewage Pumping Station - Tung Chung West - CMRSPS

·   Water Front Promenade (by others)

·   Early 2022 to Late 2030

·   General Clinic / Health Centre (by others)

·   Telephone Exchange (by others)

·   Early 2022 to Late 2030

·   Sports Ground / Sports Centre (by others)

·   Primary School (by others)

·   Late 2020 to Late 2024

Others

Service Reservoirs

·   Site Formation Works for Freshwater Service Reservoir

·   Freshwater Service Reservoir

·   Fresh Water Supply w/ pipelines at Service Reservoir

·   Site Formation Works for Saltwater Service Reservoir

·   Saltwater Service Reservoir

·   Salt Water Supply w/ pipelines at Service Reservoir

·   Mid 2018 to Mid 2022

Road P1 (Tung Chung – Tai Ho Section)

·   Road P1 (Tung Chung – Tai Ho Section) roadworks, Slip Roads and Tai Ho Interchange

·   Cycle Track at Road P1 (Tung Chung – Tai Ho Section)

·   Early 2021 to Early 2024

Infrastructure Works (by others)

Phase 1 Infrastructure (by others)

·   CLP sub-station (by others)

·   Late 2020 to Late 2023

·   Upgrading Works of Siu Ho Wan Water Treatment Works (by others)

·   Mid 2018 to Mid 2021

·   Fitting-out works of Siu Ho Wan Sewage Treatment Works (by others)

·   Mid 2021 to End 2024

2.4.1.3           Population intake for the proposed new development area in TCE and TCW will be implemented in phases together with the supporting infrastructures. Based on the implementation of the supporting infrastructures, the proposed new development will be available for the population intake as listed in the summary of the schedule of the population intake in the following table. It is the prediction based on the early availability of land and phase completion of the supporting infrastructure to support the population and will still be subject to change according to the latest implementation programme and government policy. Locations of development phasing in TCE and TCW are illustrated in Figures 2.3a and 2.3b.

                         Table 2.3    Population intake summary

Phase

Year of Population Intake

Population Intake (Approximate)

Cumulative Population Intake (Approximate)

Tung Chung East

Phase 1

2023

23,900

23,900

Phase 2

2025

13,700

37,600

Phase 3

2027

37,000

74,600

Phase 4

2029 - 2030

44,300

118,900

Tung Chung West

Phase 1

2023

19,200

19,200

Phase 2

2026 to 2030

6,300

25,500


 

3                                Project Organization

3.1                         Project Organization

3.1.1.1           The proposed project organization and lines of communication with respect to environmental protection works are shown in Appendix 3.1.

3.1.1.2           The leader of the ET shall be an independent party from the Contractor and has relevant professional qualifications, or have sufficient relevant EM&A experience subject to approval of the ER.

3.1.1.3           The responsibilities of respective parties are:

The Contractor

·               Implement the EIA recommendations and requirements;

·               Employ an ET to undertake monitoring, laboratory analysis and reporting of environmental monitoring and audit;

·               Provide assistance to ET in carrying out monitoring and auditing;

·               Submit proposals on mitigation measures in case of exceedances of Action and Limit Levels in accordance with the Event and Action Plans;

·               Implement measures to reduce impact where Action and Limit Levels are exceeded; and

·               Adhere to the agreed procedures for carrying out compliant investigation.

Environmental Team

·               Set up all the required environmental monitoring stations;

·               Monitor various environmental parameters as required in the EM&A Manual;

·               Analyse the environmental monitoring and audit data, review the success of EM&A programme, confirm the adequacy of mitigation measures implemented and the validity of the EIA predictions, and to identify any adverse environmental impacts arising;

·               Carry out site inspection to investigate and audit the Contractors’ site practice, equipment and work methodologies with respect to pollution control and environmental mitigation measures, and take proactive actions to pre-empt problems;

·               Audit and prepare audit reports on the environmental monitoring data and site environmental conditions;

·               Report on the environmental monitoring and audit results to the IEC, Contractor, the ER and EPD or its delegated representative;

·               Recommend suitable mitigation measures to the Contractor in the case of exceedance of Action and Limit Levels in accordance with the Event and Action Plans;

·               Undertake regular on-site audits / inspections and report to the Contractor and the ER of any potential non-compliance;

·               Follow up and close out non-compliance actions; and

·               Adhere to the procedures for carrying out environmental complaint investigation.

Engineer or Engineer’s Representative

·               Supervise the Contractor’s activities and ensure that the requirements in the EM&A Manual are fully complied with;

·               Inform the Contractor when action is required to reduce impacts in accordance with the Event and Action Plans;

·               Assist the Project Proponent in employing an IEC to audit the results of the EM&A works carried out by the ET;

·               Comply with the agreed Event Contingency Plan in the event of any exceedance;

·               Adhere to the procedures for carrying out complaint investigations.

Independent Environmental Checker

·               Review the EM&A works performed by the ET (at not less than monthly intervals);

·               Audit the monitoring activities and results (at not less than monthly intervals);

·               Validate and confirm the accuracy of monitoring results, monitoring equipment, monitoring locations, monitoring procedures and location of sensitive receivers;

·               Report the audit results to the ER and EPD in parallel;

·               Review the EM&A reports (monthly and quarterly summary reports) submitted by the ET;

·               Review the proposal on mitigation measures submitted by the Contractor in accordance with the Event and Action Plans;

·               Check the mitigation measures submitted by the Contractor in accordance with the Event and Action Plans;

·               Check the mitigation measures that have been recommended in the EIA and this Manual, and ensure they are properly implemented in a timely manner, when necessary; and

·               Report the findings of site inspections and other environmental performance reviews to ER and EPD.

3.1.1.4           Sufficient and suitably qualified professional and technical staff shall be employed by the respective parties to ensure full compliance with their duties and responsibilities, as required under the EM&A programme for the duration of the Project.

3.1.1.5           The ET Leader shall have at least 7 years of experience in conducting EM&A for infrastructure projects. His / Her qualification shall be vetted by the ER and the IEC. And the IEC should possess at least 7 years of experience in EM&A.


 

4                                Environmental Submission

4.1                         Introduction

4.1.1.1           The Contractor shall prepare the Environmental Management Plan (EMP) (including a Waste Management Plan, WMP), Construction Method Statement prior to the commencement of construction works and obtain approval from ER and IEC and other relevant authorities to encompass the recommended environmental protection / mitigation measures with respect to their latest construction methodology and programme.

4.2                         Environmental Management Plan

4.2.1.1           A systematic EMP shall be set up by the Contractor to ensure effective implementation of the mitigation measures, monitoring and remedial requirements presented in EIA, EM&A and Environmental Mitigation Implementation Schedule (EMIS) (See Appendix 4.1). The ER and the IEC will audit the implementation status against the EMP and advise the necessary remedial actions required. These remedial actions shall be enforced by the ER through contractual means.

4.2.1.2           The EMP will require the Contractor (together with its sub-contractors) to define in details how to implement the recommended mitigation measures in order to achieve the environmental performance defined in the Hong Kong environmental legislation and the EIA documentation.

4.2.1.3           The review of on-site environmental performance shall be undertaken by ER and IEC through a systematic checklist and audit once the construction works commences. The environmental performance review programme comprises a regular assessment on the effectiveness of the EMP. Reference should be made to ETWBTC 19 / 2005 “Environmental Management on Construction Sites” or its latest versions, and any other relevant Technical Circulars.

4.3                         Waste Management Plan

4.3.1.1           As part of EMP, the Contractor shall include WMP for the construction of the project and prior to the commencement of construction works submit to the ER and IEC for approval. Where waste generation is unavoidable, the opportunities for recycling or reusing should be maximized. If wastes cannot be recycled, recommendations for appropriate disposal routes should be provided in the WMP. A method statement for stockpiling and transportation of the excavated materials and other construction wastes should also be included in the WMP and be approved before the commencement of construction works. All mitigation measures arising from the approved WMP shall be fully implemented.

4.3.1.2           For the purpose of enhancing the management of Construction and Demolition (C&D) materials including rock, and minimizing its generation at source, construction works would be undertaken in accordance with the Section 4.1.3 of Chapter 4 in the Project Administration Handbook for Civil Engineering Works (PAH) .

4.4                         Construction Method Statement

4.4.1.1           In case the Contractor would like to adopt alternative construction methods or implementation schedules, it is required to submit details of methodology and equipment to the ER for approval before the work commences. Any changes in construction method shall be reflected in a revised EMP or the Contractor will be required to demonstrate the manner in which the existing EMP should accommodate the proposed changes.  The Contractor may need to apply for a Variation of Environmental Permit (VEP) from EPD before commencement of any construction activities.

5                                Air Quality Impact

5.1                         Introduction

5.1.1.1           The EIA has considered the potential air quality impacts during both the construction and operational phases of the Project. Fugitive dust and vehicular emission would be the key impacts during the construction phase and operational phase respectively.

5.2                         Mitigation Measures

5.2.1.1           The EIA Report has recommended dust control measures including watering all works area once per hour during working hours.  Mitigation measures are not required for the operational phase. All the proposed mitigation measures are summarized in the Environmental Mitigation Implementation Schedule (EMIS) in Appendix 4.1.

5.3                         Air Quality Parameters

5.3.1.1           Monitoring and audit of the Total Suspended Particulate (TSP) levels shall be carried out by the ET to ensure that any deteriorating air quality could be readily detected and timely action taken to rectify the situation.

5.3.1.2           One-hour TSP levels shall be measured to indicate the impacts of construction dust on air quality. The 1-hour TSP levels shall be measured by following the standard high volume sampling method as set out in the Title 40 of the Code of Federal Regulations, Chapter 1 (Part 50), Appendix B. Upon approval of the IEC, 1-hour TSP levels can be measured by direct reading method which are capable of producing comparable results as that by the high volume sampling method, to indicate short event impacts.

5.3.1.3           All relevant data including temperature, pressure, weather conditions, elapsed-time meter reading for the start and stop of the sampler, identification and weight of the filter paper, and any other local atmospheric factors affecting or affected by site conditions, etc., shall be recorded down in detail. A sample data sheet is shown in Appendix 5.1.

5.4                         Monitoring Equipment

5.4.1.1           High volume samplers (HVSs) complying with the following specifications shall be used for carrying out the 1-hour TSP monitoring:

·               0.6 – 1.7 m3 per minute adjustable flow range;

·               Equipped with a timing / control device with +/- 5 minutes accuracy for 24 hours operations;

·               Installed with elapsed-time meter with +/- 2 minutes accuracy for 24 hours operation;

·               Capable of providing a minimum exposed area of 406cm2;

·               Flow control accuracy: +/- 2.5% deviation over 24-hour sampling period;

·               Equipped with a shelter to protect the filer and sampler;

·               Incorporated with an electronic mass flow rate controller or other equivalent devices;

·               Equipped with a flow recorder for continuous monitoring;

·               Provided with a peaked roof inlet;

·               Incorporated with a manometer;

·               Able to hold and seal the filter paper to the sampler housing at horizontal position;

·               Easily changeable filter; and

·               Capable of operating continuously for a 24-hour period.

5.4.1.2           The ET is responsible for the provision, installation, operation, maintenance, dismantle of the monitoring equipment. They shall ensure that sufficient number of HVSs with an appropriate calibration kit is available for carrying out the baseline monitoring, regular impact monitoring and ad hoc monitoring. The HVSs shall be equipped with an electronic mass flow controller and be calibrated against a traceable standard at regular intervals. All the equipment, calibration kit, filter papers, etc., shall be clearly labelled.

5.4.1.3           Initial calibration of dust monitoring equipment shall be conducted upon installation and thereafter at fortnightly intervals. The transfer standard shall be traceable to the internationally recognized primary standard and be calibrated annually. The concern parties such as IEC shall properly document the calibration data for future reference. All the data should be converted into standard temperature and pressure condition.

5.4.1.4           The flow-rate of the sampler before and after the sampling exercise with the filter in position shall be verified to be constant and be recorded in the data sheet as mentioned in Appendix 5.1.

5.4.1.5           If the ET proposes to use a direct reading dust meter to measure 1-hour TSP levels, they shall submit sufficient information to the IEC to prove that the instrument is capable of achieving a comparable results to the HVS. The instrument should also be calibrated regularly, and the 1-hour sampling shall be determined periodically by the HVS to check the validity and accuracy of the results measured by direct reading method.

5.4.1.6           Wind data monitoring equipment shall also be provided and set up for logging wind speed and wind direction near the dust monitoring locations. The equipment installation location shall be proposed by the ET and agreed with the IEC. For installation and operation of wind data monitoring equipment, the following points shall be observed:

·               The wind sensors should be installed at 10m above ground so that they are clear of obstructions or turbulence caused by buildings;

·               The wind data should be captured by a data logger, the data shall be downloaded for analysis at least once a month;

·               The wind data monitoring equipment should be re-calibrated at least once every six months; and

·               Wind direction should be divided into 16 sectors of 22.5 degrees each.

5.4.1.7           In exceptional situations, the ET may propose alternative methods to obtain representative wind data upon approval from the ER and agreement from the IEC.

5.5                         Laboratory Measurement / Analysis

5.5.1.1           A clean laboratory with constant temperature and humidity control, and equipped with necessary measuring and conditioning instruments to handle the dust samples collected, shall be available for sample analysis, and equipment calibration and maintenance.  The laboratory should be Hong Kong Laboratory Accreditation Scheme (HOKLAS) accredited.

5.5.1.2           If as site laboratory is set up or a non-HOKLAS accredited laboratory is hired for carrying out the laboratory analysis, the laboratory equipment shall be approved by the ER and the measurement procedures shall be demonstrated to the satisfaction of the ER and IEC. IEC shall regularly audit to the measurement performed by the laboratory to ensure the accuracy of measurement results. The ET Leader shall provide the ER with one copy of the Title 40 of Code of Federal Regulations, Chapter 1 (Part 50), Appendix B for his / her reference.

5.5.1.3           Filter paper of size 8” x 10” shall be labelled before sampling. It shall be a clean filter paper with no pinholes, and shall be conditioned in a humidity-controlled chamber for over 24-hours and be pre-weighed before use for the sampling.

5.5.1.4           After sampling, the filter paper loaded with dust shall be kept in a clean and tightly sealed plastic bag. The filter paper shall then be returned to the laboratory for reconditioning in the humidity-controlled chamber followed by accurate weighing by an electronic balance with readout down to 0.1 mg. The balance shall be regularly calibrated against a traceable standard.

5.6                         Monitoring Locations

5.6.1.1           Figure 5.1, Figure 5.1a and Figure 5.1b show the locations of the proposed construction dust monitoring stations. The status and locations of dust sensitive receivers may change after issuing this manual. If such cases exist, the ET Leader shall proposed updated monitoring locations and seek approval from ER and agreement from the IEC.

Table 5.1    Construction dust monitoring locations

ID

ASR ID

Location

Impact Monitoring Period

DM-1

P7

Tung Chung Area 56 – Planned Public Rental Housing Development

From commencement of construction period until flat intakes of TCE-7 and TCE-14

DM-2

TCE-7

Proposed Residential Development (B1-2)

From its flat intake until the end of construction period

DM-3

TCE-14

Proposed Residential Development (D2-2)

From its flat intake until the end of construction period

DM-4

TCE-24

Proposed Residential Development (A2-4)

From its flat intake until the end of construction period

DM-5

A33

Lung Tseung Tau

Entire construction period

DM-6

A39

Mo Ka

Entire construction period

5.6.1.2           When alternative monitoring locations are proposed, the proposed site should, as far as practicable:

·               be at the site boundary or such locations close to the major dust emission source;

·               be close to the sensitive receptors; and

·               take into account the prevailing meteorological conditions.

5.6.1.3           The ET shall agree with the ER in consultation with the IEC on the position of the HVS for the installation of the monitoring equipment.  When positioning the samplers, the following points shall be noted:

·               a horizontal platform with appropriate support to secure the samplers against gusty wind should be provided;

·               no two samplers should be placed less than 2 meters apart;

·               the distance between the sampler and an obstacle, such as buildings, must be at least twice the height that the obstacle protrudes above the sampler;

·               a minimum of 2 meters of separation from walls, parapets and penthouses is required for rooftop samplers;

·               a minimum of 2 meters separation from any supporting structure, measured horizontally is required;

·               no furnace or incinerator flue is nearby;

·               airflow around the sampler is unrestricted;

·               the sampler is more than 20 meters from the dripline;

·               any wire fence and gate, to protect the sampler, should not cause any obstruction during monitoring;

·               permission must be obtained to set up the samplers and to obtain access to the monitoring stations; and

·               a secured supply of electricity is needed to operate the samplers.

5.6.1.4           The ET may, depending on site conditions and monitoring results, decide whether additional monitoring locations shall be included or any monitoring locations could be removed / relocated during any stage of the construction phase.

5.7                         Baseline Monitoring

5.7.1.1           Baseline monitoring shall be carried out at all of the designated monitoring locations (see Table 5.1) for at least 14 consecutive days prior to the commissioning of major construction works to obtain 1-hour TSP samples. The selected baseline monitoring stations should reflect baseline conditions at the impact stations. One-hour sampling should also be done at least 3 times per day while the highest dust impact is expected.

5.7.1.2           During the baseline monitoring, there should not be any major construction or dust generation activities in the vicinity of the monitoring stations. Before commencing baseline monitoring, the ET shall inform the IEC of the baseline monitoring programme such that, if required, the ER can conduct on-site audit to ensure accuracy of the baseline monitoring results.

5.7.1.3           In case the baseline monitoring cannot be carried out at the designated monitoring locations, the ET Leader shall carry out the monitoring at alternative locations that can effectively represent the baseline conditions at the impact monitoring locations. The alternative baseline monitoring locations shall be approved by the ER and agreed with the IEC.

5.7.1.4           In exceptional cases, when insufficient baseline monitoring data or questionable results are obtained, the ET shall liaise with the IEC and EPD to agree on an appropriate set of data to be used as a baseline reference and submit to ER for approval.

5.7.1.5           Ambient conditions may vary seasonally and shall be reviewed once every three months. When the ambient conditions have changed and a repeat of the baseline monitoring is required to be carried out for obtaining the updated baseline levels, the monitoring should be at times when the Contractor's activities are not generating dust, at least in the proximity of the monitoring stations. Should change in ambient conditions be determined, the baseline levels and, in turn, the air quality criteria, should be revised. The revised baseline levels and air quality criteria should be agreed with the IEC and EPD.

5.8                         Impact Monitoring

5.8.1.1           The ET shall carry out impact monitoring during the entire construction period unless specified in Table 5.1. For regular impact monitoring of 1-hour TSP, the sampling frequency of at least 3 times in every 6 days should be undertaken when the highest dust impact occurs.  Before commencing impact monitoring, the ET shall inform the IEC of the impact monitoring programme such that the IEC can conduct on-site audit to ensure accuracy of the monitoring results.

5.8.1.2           In case of non-compliance with the air quality criteria, more frequent monitoring, as specified in the Action Plan in the following section, shall be conducted within the specified timeframe after the result is obtained. This additional monitoring shall be continued until the excessive dust emission or the deterioration in air quality is rectified, and agreed with the ER and the IEC.

5.9                         Action and Limit Levels

5.9.1.1           The baseline monitoring results form the basis for determining the air quality criteria for the impact monitoring. The ET shall compare the impact monitoring results with air quality criteria set up for 1-hour TSP. Table 5.2 shows the air quality criteria, namely Action and Limit Levels to be used.

Table 5.2    Action and Limit Levels for air quality

Parameters

Action

Limit

1-hour TSP Level in μg/m3

For baseline level £ 384 μg/m3,

Action level = (baseline level * 1.3 + Limit level)/2;

For baseline level > 384 μg/m3,

Action level = Limit level

500 μg/m3


5.10                   Event and Action Plan

5.10.1.1      Should non-compliance of the air quality criteria occur, actions in accordance with the Action Plan in Table 5.3 shall be carried out.

Table 5.3        Event and Action Plan for air quality

Event

Action

ET

IEC

ER

Contractor

Action level exceedance for one sample

1. Identify source, investigate the causes of exceedance and propose remedial measures;

2. Inform IEC and ER;

3. Repeat measurement to confirm finding;

4. Increase monitoring frequency to daily.

1. Check monitoring data submitted by ET;

2. Check Contractor’s working method.

1. Notify Contractor.

1. Rectify any unacceptable practice;

2. Amend working methods if appropriate.

Action level exceedance for two or more consecutive samples

1. Identify source;

2. Inform IEC and ER;

3. Advise the ER on the effectiveness of the proposed remedial measures;

4. Repeat measurements to confirm findings;

5. Increase monitoring frequency to daily;

6. Discuss with IEC and Contractor on remedial actions required;

7. If exceedance continues, arrange meeting with IEC and ER;

8. If exceedance stops, cease additional monitoring.

1. Check monitoring data submitted by ET;

2. Check Contractor’s working method;

3. Discuss with ET and Contractor on possible remedial measures;

4. Advise the ET on the effectiveness of the proposed remedial measures;

5. Supervise Implementation of remedial measures.

1. Confirm receipt of notification of failure in writing;

2. Notify Contractor;

3. Ensure remedial measures properly implemented.

 

1. Submit proposals for remedial to ER within 3 working days of notification;

2. Implement the agreed proposals;

3. Amend proposal if appropriate.

Limit level exceedance for one sample

1. Identify source, investigate the causes of exceedance and propose remedial measures;

2. Inform ER, Contractor and EPD;

3. Repeat measurement to confirm finding;

4. Increase monitoring frequency to daily;

5. Assess effectiveness of Contractor’s remedial actions and keep IEC, EPD and ER informed of the results.

1. Check monitoring data submitted by ET;

2. Check Contractor’s working method;

3. Discuss with ET and Contractor on possible remedial measures;

4. Advise the ER on the effectiveness of the proposed remedial measures;

5. Supervise implementation of remedial measures.

1. Confirm receipt of notification of failure in writing;

2. Notify Contractor;

3. Ensure remedial measures properly implemented.

1. Take immediate action to avoid further exceedance;

2. Submit proposals for remedial actions to IEC within 3 working days of notification;

Implement the agreed proposals;

4. Amend proposal if appropriate.

Limit level exceedance for two or more consecutive samples

1. Notify IEC, ER, Contractor and EPD;

2. Identify source;

3. Repeat measurement to confirm findings;

4. Increase monitoring frequency to daily;

5. Carry out analysis of Contractor’s working procedures to determine possible mitigation to be implemented;

6. Arrange meeting with IEC and ER to discuss the remedial actions to be taken;

7. Assess effectiveness of Contractor’s remedial actions and keep IEC, EPD and ER informed of the results;

8. If exceedance stops, cease additional monitoring.

1. Discuss amongst ER, ET, and Contractor on the potential remedial actions;

2. Review Contractor’s remedial actions whenever necessary to assure their effectiveness and advise the ER accordingly;

3. Supervise the implementation of remedial measures.

1. Confirm receipt of notification of failure in writing;

2. Notify Contractor;

3. In consultation with the IEC, agree with the Contractor on the remedial measures to be implemented;

4. Ensure remedial measures properly implemented;

5. If exceedance continues, consider what portion of the work is responsible and instruct the Contractor to stop that portion of work until the exceedance is abated.

1. Take immediate action to avoid further exceedance;

2. Submit proposals for remedial actions to IEC within 3 working days of notification;

3. Implement the agreed proposals;

4. Resubmit proposals if problem still not under control;

5. Stop the relevant portion of works as determined by the ER until the exceedance is abated.

Notes:

ET – Environmental Team

IEC – Independent Environmental Checker

ER – Engineer’s Representative


6                                Noise Impact

6.1                         Introduction

6.1.1.1           The EIA has considered the potential noise impacts during both the construction and operational phases of the Project. Noise monitoring is proposed to be conducted during construction and operational phase.

6.2                         Mitigation Measures

6.2.1                  Construction Phase

6.2.1.1           The EIA Report has recommended construction noise mitigation measures including the use of quiet plant and temporary noise barriers, etc. All the proposed mitigation measures are summarized in the EMIS in Appendix 4.1.

6.2.2                  Operational Noise

Road Traffic Noise

6.2.2.1           Due to the nature of the Project, population intake will be carried out in 4 phases (i.e. Year 2023 for Phase 1, Year 2025 for Phase 2, Year 2027 for Phase 3 and Year 2030 for Phase 4) and thus road traffic noise impact assessments at interim years and ultimate year have been conducted. Results indicate that mitigation measures at interim years Year 2025 and Year 2027, and ultimate Year 2045 will be required. A series of noise mitigation measures including 1) noise barriers along some road sections or boundary walls within development sites; 2) application of low noise road surfacing materials on some road sections; 3) suitable treatment on end walls, arranging noise tolerant portions of buildings in internal layout design and architectural fins in some buildings, would need to be implemented and the required  mitigation measures under the above mentioned years are listed in Table 6.1a to Table 6.1d and are shown in Figure 6.1, Figure 6.1a-b, Figure 6.2, Figures 6.2a-b, Figure 6.3, Figures 6.3a-d, Figure 6.4, and Figures 6.4a-e respectively.

Table 6.1a  Extents and locations of proposed mitigation measures at 2023

Zoning

Location

Type of Mitigation Measures [1] [2] [3]

TCE

B1-1

Facade of residential block

Facade with no openable window

B1-1

Facade of residential block

1.5m long architectural fin

B1-2

Facade of residential block

Facade with no openable window

B1-2

Facade of residential block

1.5m long architectural fin

TCW

TCV-6

Facade of residential block

Facade with no openable window

-

Possible School Development near Tung Chung Area 39

Approx. 50m long, 4m high school boundary wall

-

Corner at junction between Chung Mun Road and Road L24

Approx. 120m long, 5m high vertical barrier with 3m cantilevered arm at 45o

-

Along Chung Mun Road

Approx. 210m long LNRS

-

Along Road L24

Approx. 160m long LNRS

-

Along Road L30

Approx. 160m long LNRS

 

Notes:

[1] Details are shown in Figure 6.1.

[2] LNRS – Low Noise Road Surfacing Materials.             

[3] An environmental review may be conducted in due course to study how the use of   new road surfacing material could help reduce traffic noise impacts and minimise the scale/extent of the proposed noise mitigation measures.

 

 

                          Table 6.1b       Extents and locations of proposed mitigation measures at 2025

Zoning

Location

Type of Mitigation Measures [1] [2] [3]

TCE

B1-1

Facade of residential block

Facade with no openable window

B1-1

Facade of residential block

1.5m long architectural fin

B1-2

Facade of residential block

Facade with no openable window

B1-2

Facade of residential block

1.5m long architectural fin

D0-3

Along Road L3

Approx. 60m long, 5m high school boundary wall

D0-4

Along Road L3

Approx. 70m long, 5m high school boundary wall with 3m cantilevered arm at 45o

D1-1

Facade of residential block

Facade with no openable window

D1-2

Facade of residential block

Facade with no openable window

D2-3

Facade of residential block

Facade with no openable window

D2-4

Facade of residential block

Facade with no openable window

D2-4

Facade of residential block

1.5m long architectural fin

TCW

TCV-6

Facade of residential block

Facade with no openable window

-

Possible School Development near Tung Chung Area 39

Approx. 50m long, 4m high school boundary wall

-

Corner at junction between Chung Mun Road and Road L24

Approx. 120m long, 5m high vertical barrier with 3m cantilevered arm at 45o

-

Along Chung Mun Road

Approx. 210m long LNRS

-

Along Road L24

Approx. 160m long LNRS