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 5

2.3               Development Programme of the Project 10

2.4               Construction Programme  11

2.5               Concurrent Projects  13

3                Project Organization  15

3.1               Project Organization  15

4                Environmental Submission  18

4.1               Introduction  18

4.2               Environmental Management Plan  18

4.3               Waste Management Plan  18

4.4               Construction Method Statement 19

5                Air Quality Impact 20

5.1               Introduction  20

5.2               Air Quality Parameters  20

5.3               Monitoring Equipment 20

5.4               Laboratory Measurement / Analysis  22

5.5               Monitoring Locations  23

5.6               Baseline Monitoring  24

5.7               Impact Monitoring  25

5.8               Action and Limit Levels  25

5.9               Event and Action Plan  27

5.10            Mitigation Measures  29

6                Noise Impact 32

6.1               Introduction  32

6.2               Noise Monitoring Parameters for Construction Noise  32

6.3               Monitoring Equipment for Construction Noise  32

6.4               Monitoring Locations for Construction Noise  33

6.5               Baseline Monitoring for Construction Noise  34

6.6               Impact Monitoring for Construction Noise  35

6.7               Action and Limit Levels for Construction Noise  35

6.8               Event and Action Plan for Construction Noise  36

6.9               Noise Monitoring Parameters for Operational Road Traffic Noise  38

6.10            Monitoring Equipment for Operational Noise  38

6.11            Monitoring Locations for Operational Road Traffic Noise  38

6.12            Impact Monitoring for Operational Road Traffic Noise  39

6.13            Event and Action Plan for Operational Road Traffic Noise  40

6.14            Commissioning Test for Operational Fixed Plant Noise  40

6.15            Mitigation Measures  40

7                Water Quality Impact 52

7.1               Introduction  52

7.2               Water Monitoring Parameters  52

7.3               Monitoring Equipment 52

7.4               Laboratory Measurement / Analysis  55

7.5               Monitoring Locations  55

7.6               Baseline Monitoring  56

7.7               Impact Monitoring  57

7.8               Action and Limit Levels  58

7.9               Event and Action Plan  60

7.10            Mitigation Measures  63

8                Sewage & Sewerage Treatment Implications  71

8.1               Introduction  71

8.2               Mitigation Measures  71

9                Ecology  75

9.1               Introduction  75

9.2               Mitigation Measures  75

9.3               Monitoring and Audit Requirement 78

10              Fisheries  82

10.1            Introduction  82

11              Landscape and Visual Impacts  83

11.1            Introduction  83

11.2            Mitigation Measures  83

11.3            Baseline monitoring  85

11.4            Audit Requirement 85

11.5            Event and Action Plan  87

12              Waste Management Implications  90

12.1            Introduction  90

12.2            Mitigation Measures  90

12.3            Waste EM&A Requirements  91

12.4            Site Audit Requirements  91

13              Land Contamination Impact 1

13.1            Introduction  1

13.2            Proposed Re-appraisal for Potentially Contaminated Landuses, Industrial Site with No Land Potential for Contamination and Non-Industrial Landuses  1

13.3            Mitigation Measures  1

14              Cultural Heritage Impact 3

14.1            Introduction  3

14.2            Mitigation Measures  3

15              Site Environmental Audit 8

15.1            Site Inspection  8

15.2            Environmental Compliance  9

15.3            Choice of Construction Method  10

15.4            Environment Complaints  10

16              Reporting  12

16.1            General 12

16.2            Baseline Monitoring Report 12

16.3            Monthly Monitoring Reports  13

16.4            Final EM&A Review Reports  18

16.5            Data Keeping  21

16.6            Interim Notifications of Environmental Quality Limit Exceedances  21

 

Figures

 

Figure 1.1

Location of Project

Figure 2.1

Locations of Schedule 2 Designated Projects

Figure 2.2

Locations of Development Staging 

Figure 2.3

Locations of Concurrent Projects

Figure 5.1

Locations of Construction Dust Monitoring Stations (Sheet 1 of 4)

Figure 5.1a

Locations of Construction Dust Monitoring Stations (Sheet 2 of 4)

Figure 5.1b

Locations of Construction Dust Monitoring Stations (Sheet 3 of 4)

Figure 5.1c

Locations of Construction Dust Monitoring Stations (Sheet 4 of 4)

Figure 6.1

Locations of Construction Noise Monitoring Stations (Sheet 1 of 6)

Figure 6.1a

Locations of Construction Noise Monitoring Stations (Sheet 2 of 6)

Figure 6.1b

Locations of Construction Noise Monitoring Stations (Sheet 3 of 6)

Figure 6.1c

Locations of Construction Noise Monitoring Stations (Sheet 4 of 6)

Figure 6.1d

Locations of Construction Noise Monitoring Stations (Sheet 5 of 6)

Figure 6.1e

Locations of Construction Noise Monitoring Stations (Sheet 6 of 6)

Figure 6.2

Locations of Road Traffic Noise Monitoring Stations (Sheet 1 of 6)

Figure 6.2a

Locations of Road Traffic Noise Monitoring Stations (Sheet 2 of 6)

Figure 6.2b

Locations of Road Traffic Noise Monitoring Stations(Sheet 3 of 6)

Figure 6.2c

Locations of Road Traffic Noise Monitoring Stations (Sheet 4 of 6)

Figure 6.2d

Locations of Road Traffic Noise Monitoring Stations (Sheet 5 of 6)

Figure 6.2e

Locations of Road Traffic Noise Monitoring Stations (Sheet 6 of 6)

Figure 6.3

Mitigation Measures for Road Traffic Noise (Sheet 1 of 4)

Figure 6.3a

Mitigation Measures for Road Traffic Noise (Sheet 2 of 4)

Figure 6.3b

Mitigation Measures for Road Traffic Noise (Sheet 3 of 4)

Figure 6.3c

Mitigation Measures for Road Traffic Noise (Sheet 4 of 4)

Figure 7.1

Locations of Water Quality Monitoring Locations (Sheet 1 of 5)

Figure 7.1a

Locations of Water Quality Monitoring Locations (Sheet 2 of 5)

Figure 7.1b

Locations of Water Quality Monitoring Locations (Sheet 3 of 5)

Figure 7.1c

Locations of Water Quality Monitoring Locations (Sheet 4 of 5)

Figure 7.1d

Locations of Water Quality Monitoring Locations (Sheet 5 of 5)

Figure 14.1

Location of Further Archaeological Survey

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


 

Appendices

 

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                  In order to address the demand for land for housing, the Policy Addresses (i.e. from Year 2012 to Year 2015) announced the review of agricultural land in the North District and Yuen Long, which is mainly deserted or being used for industrial purposes and/or temporary storage purposes, as one of the land supply measures. Furthermore, the recent Policy Addresses in Year 2016 to Year 2017 mentioned Yuen Long South (YLS) development as a medium and long-term land supply measure.

1.1.2                  To optimise the use of degraded brownfield sites so as to release their development potential in meeting the territory’s medium to long-term housing needs, the Planning and Engineering Study for the Housing Sites in YLS – Investigation (the Study) commenced in November 2012 to examine the future land use, optimise the development potential of the degraded brownfield, improve existing degraded environment and ascertain the feasibility for public and private housing developments and other uses within the YLS Potential development Area (PDA) with supporting infrastructures and community facilities (The Project).

1.1.3                  The YLS PDA is located to the south of Yuen Long New Town, and in the proximity of Tin Shui Wai New Town and the planned Hung Shui Kiu (HSK) New Development Area (NDA). The area is connected with the urban areas by strategic road links, including Route 3 and Yuen Long Highway (YLH).

1.1.4                  The PDA, which has an area of 223.5 hectares (ha), is surrounded by YLH to the north and Tai Lam Country Park to the south. The PDA includes the Tong Yan San Tsuen (TYST) area, a piece of land zoned “Undetermined” (“U”) on TYST Outline Zoning Plan (OZP) as well as two small pieces of land in the Tai Tong area which are zoned “Other Specified Uses” annotated “Rural Use” (“OU(RU)”) on Tai Tong OZP.

1.1.5                  The YLS PDA is currently rural in character with a mixture of land uses. The predominant uses are brownfield operations including open storage yards, warehouses, workshops, industrial operations, etc. These brownfield operations are intermingled with rural settlements and residential developments, agricultural land, livestock farms and vacant land. Proliferation of brownfield sites including open storage yards, warehouses and industrial workshops has resulted in degradation of the rural environment due to noise nuisances to surrounding residents, and discharge of industrial waste water, i.e. from daily cleaning at the working area, waste water from workshops after heavy rainfall, etc. Furthermore, any of these industrial premises which may not be properly connected to sewer system could result in discharge of untreated sewage into nearby water bodies and hence deteriorate water quality.

1.1.6                  Planning Department (PlanD) and Civil Engineering and Development Department (CEDD) of the HKSAR commissioned Ove Arup and Partners Hong Kong Limited (Arup) in 2012 to undertake the Planning and Engineering Study for Housing Sites in YLS – Investigation (the Study).  The Study will examine the future land use, optimise the development potential, and ascertain the feasibility for public and private housing developments in the YLS PDA. Specifically, the Study will:

·                  examine and identify sites within the YLS PDA for public and private housing developments, supporting Government, Institution or Community (G/IC) facilities, open space and/or amenities and other uses, and review the boundaries of the PDA;

·                  recommend appropriate development parameters for the development sites;

·                  ascertain the feasibility and acceptability of the Study proposals in terms of traffic and other infrastructure capacities, urban design, environment, air ventilation, etc.;

·                  identify and propose engineering infrastructure works that are needed to support the Study proposals; and

·                  undertake a three-stage Community Engagement (CE) Programme to solicit public views on the Study proposals within the PDA as input to this Study.

1.1.7                  The findings and recommendations of the Study will serve as a reference for the revision of the TYST OZP, Tai Tong OZP and the prevailing OZPs that will be affected by the development proposals to guide the YLS developments and engineering infrastructure upgrading works identified.

1.1.8                  The location of Project is shown in Figure 1.1. Descriptions of the Project elements have been further elaborated and presented in Section 2.1.

1.2                         Purpose of the Manual

1.2.1                  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.

1.2.2                  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.

1.2.3                  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 (EIAO-TM).

1.2.4                  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.

1.2.5                  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                  The YLS PDA covers approximately 223.5 ha and is located to the south of Yuen Long New Town and bounded by YLH to the north and Tai Lam Country Park to the south. The PDA is divided into three areas, i.e. Area 1, Area 2 and Area 3. Other than development within the PDA, there are supporting infrastructure works outside the PDA boundaries, which include the following:

·                  New slip roads connecting the PDA to Pok Oi Interchange and a new PTI next to Yoho Midtown;

·                  New PTI next to Yoho Midtown;

·                  New TYST Reclaimed Water Service Reservoir and its associated works;

·                  Partial decking of Yuen Long Nullah along Kung Um Road and Kiu Hing Road;

·                  Modification works on the trunk roads connecting TSWW Interchange;

·                  Modification works on the primary distributor roads connecting TYST Interchange;

·                  Other new local roads connecting the PDA;

·                  Rising Main for water supplies and sewage;

·                  New sewer from YLS STW to existing inlet chamber of the NWNT effluent tunnel at San Wai for discharging to the Urmston Road submarine outfall.

2.2                         Designated Project

2.2.1                  The Project is a Designated Project (DP) under Item 1 Schedule 3 of the EIA Ordinance - 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. To implement the Project, there are various infrastructure items among some of which are classified as DPs under Schedule 2 of the EIA Ordinance. The list and details are shown in Figure 2.1 and the table below.

Table 2.1        Summary of Schedule 2 DPs

DP Reference No.

Schedule 2 Designated Project

Work Component / Reference in RODP

DP1

Part I, A.1

A road which is an expressway, trunk road, primary distributor road or district distributor road including new roads, and major extensions or improvements to existing road

Construction of Trunk Roads (TSWW Interchange)

DP2

Part I, A.1

A road which is an expressway, trunk road, primary distributor road or district distributor road including new roads, and major extensions or improvements to existing road

Construction of new Primary Distributor Roads (TYST Interchange)

DP3

Part I, A.1

A road which is an expressway, trunk road, primary distributor road or district distributor road including new roads, and major extensions or improvements to existing road

Construction of two new Distributor Roads (Road D1 to Road D2)

DP4 [1]

(By others)

Part I, A.3

A tramway and its associated stations

Environmentally Friendly Transport Services (EFTS)

DP5

Part I, A.8

A road or railway bridge more than 100 m in length between abutments

Construction of slip roads at the TYST Interchange

DP6

Part I, A.9

A road fully enclosed by decking above and by structure on the sides for more than 100 m

Construction of partly depressed road/ underpass located at TSWW Interchange and full enclosures at TYST Interchange

DP7 [1]

(by others)

Part I, F.2

Sewage treatment works with an installed capacity of more than 5,000 m3 per day and located at less than 200 m from existing / planned receivers

Construction of YLS STW (Site OU3.3)

DP8

Part I, F.3(b)

A sewage pumping station with an installed capacity of more than 2,000 m3 per day and located at less than 150 m from existing / planned receivers

Construction of two new SPSs (Sites OU1.12 and OU2.2)

DP9 [1]

(by others)

Part I, F.4

An activity for the reuse of treated sewage effluent from a treatment plant

Construction of Reclaimed Water Service Reservoir for reuse of reclaimed water

DP10

Part I, I.1(b)(vii)

A drainage channel or river training and diversion works less than 300 m from the nearest boundary of an existing conservation area

Yuen Long Nullah revitalisation/decking along Kung Um Road and Kiu Hing Road

Notes:

[1] The project element is a separate DP to be constructed and operated by the future relevant project proponents. The future relevant project proponents shall conduct separate studies, including EIA for approval under the EIA Ordinance if necessary, to determine its feasibility and implementation programme. However, the site formation work for this DP will be covered in this EIA.

DP 1, 2 and 3 Part I, A.1 – Construction of trunk roads, primary distributor roads and district distributor roads

2.2.2                  The major objective of the proposed road network is to improve connectivity with Yuen Long New Town, the proposed HSK NDA, and provides a direct access and egress to YLH. Long Hon Road is proposed to be upgraded and extended to Kung Um Road to form a key corridor of the PDA.

2.2.3                  The road system would provide direct and convenient access of freight traffic between the Employment Belt and YLH without travelling through the residential neighbourhood. The TSWW Interchange (trunk roads) is improved to increase traffic movements and cater for direct access between the Employment Belt and YLH through the westbound carriageway.

2.2.4                  The improved TYST Interchange (primary distributor roads) would be modified to cater for all traffic movements to and from YLH, Long Tin Road and Long Hon Road.

2.2.5                  In addition, district distributor Road D1 will connect through TYST Interchange and Area to Area 2 and 3 of the PDA, and district distributor Road D2 will connect Kung Um Road, Lam Tai West/East Road to Road D1.

2.2.6                  In addition, a pair of slip roads (local distributor roads) running on both sides and parallel with YLH from Kung Um Road eastward are proposed to provide connectivity to YLH via Shap Pat Heung Interchange. These roads are local distributor roads which are not DPs.

2.2.7                  For the northern section of Kung Um Road and Kiu Hing Road (local distributor roads) along Yuen Long Nullah, road widening would be undertaken through partial decking of Yuen Long Nullah. For Kung Um Road, the existing two lanes will be kept and changed to one-way direction, with minor road improvement works including road widening and footpath provision. For Kiu Hing Road, the existing one lane road would be upgraded as standard one-way 2-lane single carriageway. This proposal allows provision of adequate road space for vehicles and pedestrians. These roads are local distributor roads which are not DPs.

2.2.8                  Since the proposed works involve construction and major improvements of trunk roads, primary distributor roads and district distributor roads, they will be DPs under Item A.1 of Schedule 2, Part I of EIA Ordinance.

DP 4 - Part I, A.3 - Construction of Environmentally Friendly Transport Services (EFTS) – subject to further review

2.2.9                  The RODP has reserved a corridor for the extension of the EFTS proposed under the HSK NDA project with possible connection to West Rail Tin Shui Wai Station. The reserve navigates through the storage/workshops, residential, commercial and other land reserves within the PDA. As mentioned in the approved HSK EIA report, a modern low profile tram system has been assumed for the purpose of the EIA. However, the EFTS system is a separate DP to be constructed and operated by the future operator who would need to prepare and submit a separate EIA Study for approval under the EIA Ordinance.

DP 5 - Part I, A.8 – Construction of a road bridge more than 100m in length between abutments

2.2.10             As part of the road improvement works, an elevated viaduct section of more than 100m in length are proposed at TYST Interchange in the RODP.

2.2.11             Since the proposed works involve construction of a road bridge more than 100m in length between abutments in the RODP, it will be a DP under Item A.8 of Schedule 2, Part I of EIA Ordinance.

DP 6 - Part I, A.9 – Construction of a road fully enclosed by decking above and by structure on the sides for more than 100m in length

2.2.12             As part of the TSWW Interchange improvement works, a depressed road/ underpass of more than 100m in length beneath the at-grade roundabout at the TSWW Interchange is proposed in the RODP. In addition, full enclosures at TYST Interchange are also required in order to comply the noise criteria.

2.2.13             Since the proposed works involve construction of a fully enclosed road of more than 100m in length in the RODP, it will be a DP under Item A.9 of Schedule 2, Part I of EIA Ordinance.

DP 7 - Part I, F.2 – Construction of a Sewage Treatment Works – subject to further review

2.2.14             With other major developments including HSK NDA, Kam Tin South and housing sites at Wang Chau, there is neither spare sewage treatment capacity at the nearby San Wai Sewage Treatment Work (SWSTW) nor Yuen Long Sewage Treatment Works (YLSTW) for the YLS development, despite planned upgrading of these sewage treatment works (STWs). There is also little scope to further expand these two STWs after discussions with the relevant authorities.

2.2.15             An “OU(STW)” zone at the southern end of Kung Um Road is reserved for the construction of an aboveground STW (YLS STW) for treatment and disposal of sewage arising from the PDA. Based on the sewage estimation according to the RODP, the treatment capacity of YLS STW would have an Average Dry Weather Flow (ADWF) of 24,000m3/day.

2.2.16             Since the proposed works involve construction of sewage treatment works with installed capacity more than 5,000m3 per day, and they are located close to the planned receivers in the RODP, it will be a DP under Item F.3(b) of Schedule 2, Part I of EIA Ordinance. However, the STW is a separate DP to be constructed and operated by the future operator who would need to prepare and submit a separate EIA for approval under the EIA Ordinance.

DP 8 - Part I, F.3(b) – Construction of two sewage pumping stations

2.2.17             Two “OU(RCP&SPS)” zones are intended for the sewage pumping stations (SPSs) and refuse collection points (RCPs).

2.2.18             The SPS site located to the east of TYST Interchange in Area 1 is reserved for an intermediate SPS to pump the sewage collected from the Area 1 for further discharge by gravity sewerage to the YLS STW for treatment, as well as an RCP. The ADWF of the SPS would be approximately 4,700m3/day.

2.2.19             The other SPSs site located to the west of the northern end of Kung Um Road in Area 2 is reserved to retain the existing Lung Tin SPS, construct a SPS to pump the sewage collected from the Areas 2 and 3 by underground gravity sewers to the on-site STW for treatment, as well as an RCP. The ADWF of the SPS would be approximately 23,280m3/day at the northern end of Kung Um Road.

2.2.20             Since the proposed works involve construction of SPS with installed capacity more than 2,000m3 per day, and they are located close to the planned receivers in the RODP, it will be a DP under Item F.3(b) of Schedule 2, Part I of EIA Ordinance.

DP 9 - Part I, F.4 - An activity for the reuse of reclaimed water from a treatment plant – subject to further review

2.2.21             An area at the southern end of TYST is reserved for the construction of a Reclaimed Water Service Reservoir for reuse of reclaimed water generated from the YLS STW.

2.2.22             Since the proposed works involve reuse of reclaimed water from a treatment plant, it will be a DP under Item F.4 of Schedule 2, Part I of EIA Ordinance. However, the reuse activity is a separate DP to be constructed and operated by the future operator who would need to prepare and submit a separate EIA for approval under the EIA Ordinance.

DP 10 - Part I, I.1(b)(vii) - Yuen Long Nullah Revitalisation

2.2.23             Yuen Long Nullah would be partially decked to provide space for road widening and provision of landscaped footpaths at Kung Um Road and Kiu Hing Road. The nullah would also be reviatlised and integrated in the urban design and landscape framework.

2.2.24             Since the proposed works involve a drainage channel or river training less than 300m from the nearest boundary of an existing Conservation Area under TYST OZP Plan No. S/YL-TYST/10, it will be a DP under Item I.1(b)(vii) of Schedule 2, Part I of EIA Ordinance.

2.2.25             This E1A study will therefore cover all the Schedule 2 DPs mentioned except DP4, DP7 and DP9 in Table 2.1.

2.3                         Development Programme of the Project

2.3.1                  In order to ensure a balanced and programmed development with orderly rehousing/relocation of qualified clearees, the PDA including the associated engineering infrastructure is proposed to be divided into four main stages for implementation as illustrated in Figure 2.2.  The target for first population intake of the development is Year 2027.

Key Developments in Stage 1

2.3.2                  Stage 1 involves fast track delivery of an initial public housing site at the northern part of the PDA next to Kung Um Road to facilitate first intake of population in Year 2027.  In addition, two Village Re-site Areas will be needed in Stage 1 for re-provisioning of private lots, which are subjected to Village Removal Terms (VRT), affected in the later Stage 2 development.

2.3.3                  New road connection from the initial housing site to existing Tai Kei Leng Road and road improvement and nullah decking along Yuen Long Nullah to the northern most section Kung Um Road/Kiu Hing Road from YLH to Shap Pat Heung Road will also be carried out in Stage 1 to improve traffic connectivity for the initial development.  

Key Developments in Stage 2

2.3.4                  Stage 2 is mainly for developing the remaining developments in the northern part of the PDA next to Kung Um Road and the Employment Belt at TYST for multi-storey buildings and open storage site.

2.3.5                  To support the main thrust of the YLS development, major infrastructure works including modification of TYST Interchange, construction of the slip roads and its PTI at Yuen Ching Road, STW, STW, new sewer from YLS STW to existing inlet chamber of the NWNT effluent tunnel at San Wai for discharging to the Urmston Road submarine outfall, SPSs, Reclaimed Water Service Reservoir, partial decking and revitalisation of the Yuen Long Nullah to the south of YLH and road improvement works at the southern Kiu Hing Road and Wong Nai Tun Tsuen Road will be carried out in the Stage 2 development.

2.3.6                  For re-provisioning of private lots which are subjected to VRT and to be affected in Stage 3, another Village Resite Area in southern part of PDA along Kung Um Road will also be needed at this stage.

Key Developments in Stage 3

2.3.7                  Stage 3 is mainly for developing the sites and the associated infrastructure in the southern part of the YLS PDA along Kung Um Road, including the Hillside River Corridor, reedbed/ retention pond and retention lake.

Key Developments in Stage 4

2.3.8                  The final Stage 4 is mainly for developing the sites in the PDA at TYST.  Major works for modification of TSWW Interchange is programmed to be carried out this later Stage 4 to avoid substantial traffic impact and diversions of undertaking modification of TYST and TSWW Interchanges at the same time.

2.4                         Construction Programme

2.4.1                  It is anticipated that the new town development will be commissioned in phases. The construction works are targeted to commence in Year 2020 and are summarised in Table 2.2 below.

Table 2.2 Works packaging for the YLS Development

Works Package

Land Clearance & Construction Period

Description of Works

Stage 1 Works - Phase 1a)

Initial Housing Site / Road Improvement Works

2020 to 2027

·         Decontamination and Site Formation Works

·         Internal Road, Pipe works and Landscaping

·         Nullah Decking and Road Works for Kung Um Road/Kiu Hing Road and New Local Distributor to Tai Kei Leng Rd

Stage 1 Works - Phase 1b)

Initial Housing Site / Resite Village House

2020 to 2029

·         Decontamination and Site Formation Works

·         Internal Roads, Pipeworks, Utilities and Landscaping

·         Re-site Village House Construction (Zone 1 and Zone 2)

·         Construction of Public Housing

Stage 2 Works - Phase 2a)

Multi-Storey Building/ Open Storage Site (To the South West of TSWW Interchange)

2022 to 2028

·         Decontamination and Site Formation Works

·         Internal Roads, Pipeworks, Utilities and Landscaping

·         Construction of Multi-storey Buildings

·         Preparation of Open Storage Site

Stage 2 Works - Phase 2b)

Northern Sites along Kung Um Road, Kung Um Road Improvement and Reclaimed Water Service Reservoir

2023 to 2033

·         Decontamination and Site Formation Works

·         Internal Roads, Pipeworks, Utilities and Landscaping

·         Tin Tsuen Channel Revitalisation

·         Kung Um Road/Kiu Hing Road/Wong Nai Tun Tsuen Road Improvement/ Yuen Long Nullah Revitalisation and Landscaping

·         Reclaimed Water Service Reservoir and Service Road

·         Re-site Village House Construction

·         Tin Tsuen Channel Revitalisation

·         Construction of Private Housing

·         Construction of Public Housing

·         Construction of Government Facilities

Stage 2 Works - Phase 2c)

External Roads (Tong Yan San Tsuen Interchange Improvement, Shap Pat Heung Interchange Improvement)

2025 to 2032

·         Decontamination and Site Formation Works

·         TYST Interchange Improvement and Landscaping

·         Yuen Long West Nullah Revitalisation

·         Re-site Village House Construction (in Zone 3)

·         Shap Pat Heung Interchange Improvement and Landscaping

Stage 2 Works - Phase 2d)

Sewage Treatment Works

2023 to 2029

·         Decontamination and Site Formation Works

·         Sewage Treatment Works

·         Pumping Station

Stage 2 Works - Phase 2e)

Multi-Storey Buildings (Remaining)

2025 to 2033

·         Decontamination and Site Formation Works

·         Internal Roads, Pipeworks, Utilities and Landscaping

·         Construction of Multi-storey Buildings

Stage 3 Works - Phase 3)

Southern Sites Along Kung Um Road, Kung Um Road Improvement

2031 to 2038

·         Decontamination and Site Formation Works

·         Internal Roads, Pipeworks, Utilities and Landscaping

·         Hillside River Corridor & Retention Lake

·         Construction of Private Housing

·         Construction of Public Housing

·         Construction of Government Facilities

Stage 4 Works - Phase 4a)

Sites in Tong Yan San Tsuen and Internal Roads

2032 to 2038

·         Decontamination and Site Formation Works

·         Internal Roads, Pipeworks, Utilities and Landscaping

·         Retention Tank/Lake

·         Construction of Private Housing

·         Construction of Government Facilities

Stage 4 Works - Phase 4b)

TSWW Interchange Improvement

2032 to 2038

·         Decontamination and Site Formation Works

·         TSWW Interchange Improvement and Landscaping

2.5                         Concurrent Projects

2.5.1                  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 2.3 shows the locations of these concurrent projects.

·                HSK NDA Planning and Engineering Study;

·                Engineering Works at Lin Cheung Road Site, Sham Shui Po and Wang Chau, Yuen Long;

·                Site Formation and Infrastructural Works for the Development at Long Bin, Yuen Long, Feasibility Study;

·                Site Formation and Infrastructural Works for the Development near Tan Kwai Tsuen, Yuen Long – Feasibility Study;

·                Improvement to Pok Oi Interchange;

·                Elevated Pedestrian Corridor in Yuen Long Town Connecting with Long Ping Station – Investigation, Design and Construction;

·                Improvement of Yuen Long Town Nullah (Town Centre Section) – Stage 1 Improvement Works – Design and Construction;

·                Improvement of Yuen Long Town Nullah (Town Centre Section) – Stage 2 Beautification Works – Design and Construction;

·                Design-Build-and-Operate contract for upgrading San Wai Sewage Treatment Works – Phase 1;

·                Cycle Tracks Connecting North West New Territories with North East New Territories – Tuen Mun to Sheung Shui section (Stage 1);

·                Property Development of Kam Sheung Road Station and its adjoining areas; and

·                Greening Master Plan (GMP) for Yuen Long - Greening Works in Tuen Mun and Yuen Long.

 

 

 


 

3                                Project Organization

3.1                         Project Organization

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

3.1.2                  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.

3.1.3                  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.

3.1.4                  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.

3.1.5                  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                  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                  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.

4.2.2                  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.

4.2.3                  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                  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.

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

5.2                         Air Quality Parameters

5.2.1                  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.

5.2.2                  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.

5.2.3                  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.

5.3                         Monitoring Equipment

5.3.1                  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.

5.3.2                  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.

5.3.3                  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.

5.3.4                  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.

5.3.5                  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.

5.3.6                  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.

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

5.4                         Laboratory Measurement / Analysis

5.4.1                  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.

5.4.2                  If a 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.

5.4.3                  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.

5.4.4                  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.

5.5                         Monitoring Locations

5.5.1                  Figure 5.1 and Figure 5.1a to Figure 5.1c 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 propose updated monitoring locations and seek approval from ER and agreement from the IEC.

Table 5.1     Construction dust monitoring locations

ID

ASR ID

Location

Phases of the Project

Impact Monitoring Period [1]

Existing Air Sensitive Receivers

DM-1

A113

Shan Ha Tsuen House No. 613F

Stage 1

Year 2022 –2029

DM-2

A106

Village House along Kung Um Road

Stage 2

Year 2023 –2033

DM-3

A30

Village House, Kung Um Road

Stage 3

Year 2033 - 2038

DM-4

A34

House no. 128, Kung Um Road

Stage 3

Year 2033 - 2038

DM-5

W-A1

House 33, Park Villa

Stage 4

Year 2034 - 2038

DM-6

W-A14

Sha Tseng Tsuen

Stage 4

Year 2034 - 2038

Note:

[1] The monitoring period is subject to the construction programme of the relevant contracts in the Construction Stage.

5.5.2                  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.

5.5.3                  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.

5.5.4                  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.

5.6                         Baseline Monitoring

5.6.1                  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.

5.6.2                  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.

5.6.3                  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.

5.6.4                  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.

5.6.5                  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.

5.7                         Impact Monitoring

5.7.1                  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.

5.7.2                  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.

5.8                         Action and Limit Levels

5.8.1                  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


5.9                         Event and Action Plan

5.9.1                  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


5.10                   Mitigation Measures

5.10.1             Mitigation measures for dust control have been recommended in the EIA Report. The Contractor shall be responsible for the design and implementation of these measures. Mitigation measures are not required for the operation phase. All the proposed mitigation measures are summarized in the Environmental Mitigation Implementation Schedule (EMIS) in Appendix 4.1.

Construction Phase

5.10.2