Job No.: TCS00694/13
Agreement No. CE 45/2008 (CE) Liantang/Heung Yuen Wai Boundary Control Point and Associated Works
19^th Quarterly Environmental Monitoring & Audit Summary Report ¡V (February to April 2018)	0
Prepared For
Civil Engineering and Development Department (CEDD)

Quality Index
Date	Reference No.	Prepared By	Certified By
14 August 2018	TCS00694/13/600/R1635v2
		Nicola Hon (Environmental Consultant)	T.W. Tam (Environmental Team Leader)

Version	Date	Description
1	24 July 2018	First Submission
2	14 August 2018	Amended according to the IEC¡¦s comment on 31 July 2018

This report has been prepared by Action-United Environmental Services & Consulting with all reasonable skill, care and diligence within the terms of the Agreement with the client, incorporating our General Terms and Conditions of Business and taking account of the resources devoted to it by agreement with the client. We disclaim any responsibility to the client and others in respect of any matters outside the scope of the above. This report is confidential to the client and we accept no responsibility of whatsoever nature to third parties to whom this report, or any part thereof, is made known. Any such party relies upon the report at their own risk.

Executive Summary

ES.01. This is the 19^th Quarterly EM&A Summary Report for the ¡§Liantang/Heung Yuen Wai Boundary Control Point and Associated Works¡¨ under Environmental Permit No. EP-404/2011/D (hereinafter ¡¥¡¥the EP¡¦¡¦), covering the period from 1 February to 30 April 2018 (hereinafter ¡§Reporting Period¡¨).

Environmental Monitoring and Audit Activities

ES.02. In the Reporting Period, the construction works under Liantang/Heung Yuen Wai Boundary Control Point and Associated Works of the Project included Contract 2, Contract 3, Contract 6, Contract 7 and Contract SS C505. Environmental monitoring activities under the EM&A programme in the Reporting Period are summarized in the following table.

Environmental Aspect	Monitoring Parameters / Inspection	Reporting Period
		Monitoring Locations / Contracts	Total Occasions
Air Quality	1-hour TSP	9	405
	24-hour TSP	9	134 (^)
Construction Noise	Leq(30min) Daytime	10	130
Water Quality	Water in-situ measurement and/or sampling	WM1 & WM1-C,	37 scheduled and 0 extra of sampling day
		WM2A & WM2A-Cx	37 scheduled and 2 extra of sampling day
		WM2B & WM2B-C	(*) 37 Scheduled
		WM3 &WM3-C	38 scheduled and 2 extra of sampling day
		WM4, WM4-CA &WM4-CB	38 scheduled and 2 extra of sampling day
Ecology	Woodland compensation i) General Health condition of planted species ii) Survival of planted species	9 Quadrats	1
Joint Site Inspection / Audit	IEC, ET, the Contractor and RE joint site Environmental Inspection and Auditing	Contract 2	13
		Contract 3	13
		Contract 4	13
		Contract 6	13
		Contract 7	13
		Contract SS C505 (#)	12

Note: Extra monitoring day was due to measurement results exceedance

(#) IEC only joined inspection for Contract SS C505 once per month.

(*) During the whole reporting period, water sampling was unable to carry out at WM2B and WM2B-C due to shallow water (water depth under 150mm)

(^) 24-hour TSP monitoring at AM1b has been temporary suspended since 27 April 2018 as rented land was demolished and returned to the landlord. Alterative location to replaced AM1b is being seeking by ET for IEC and EPD approval.

Breaches of Action/Limit levels

ES.03. In the Reporting Period, no noise exceedance and valid noise complaint was registered for construction noise. For air quality, there was 1 Limit Level exceedance recorded for 24-hour TSP monitoring. For water quality monitoring, a total of 11 Limit Level exceedances were recorded under the Project. The summary of exceedance for the Reporting Period is shown below.

Environmental Aspect	Monitoring Parameters	Action Level	Limit Level	Event & Action
				NOE Issued	Investigation	Corrective Actions
Air Quality	1-hour TSP	0	0	0	--	--
	24-hour TSP	0	1	1	Not project related	NA
Construction Noise	Leq(30min) Daytime	0	0	0	--	--
Water Quality	DO	0	0	0	--	--
	Turbidity	0	6	6	• All exceedances were not project related.	The Contractor should fully implement water quality mitigation measure.
	SS	0	5	5

ES.04. Investigation report for the 24-hour TSP monitoring was completed by ET. Investigation results revealed that the Contractor had properly implemented dust mitigation measures such covering of the stockpile and providing water spraying for dusty haul road and dusty area. Since Joss paper burning was suspected to be conducted during period of sampling, which affecting the monitoring result, it was conducted that the exceedance was not caused by the works under the Project.

ES.05. Investigation Report for all water quality exceedances was completed by ET. Investigation results revealed that the Contractor had properly implemented water quality mitigation measures such as well-maintained the wastewater treatment facility and covered the expose area with impervious sheet. It was concluded that the exceedances were related to the unknown source of muddy water contributed from outside the project area and not caused by the works under the Project. Nevertheless, the Contractor was reminded to fully implement the water quality mitigation measure throughout the constriction phase as far as practicable.

Environmental Complaint

ES.06. In this Reporting Period, four (4) documented environmental complaints were received regarding the dust and water quality issues under the EM&A Programme. The Investigation Reports for the complaints were completed by ET without further comments from IEC.

Notification of Summons and Successful Prosecutions

ES.07. No environmental summons or successful prosecutions were recorded in the Reporting Period.

Reporting Changes

ES.08. No reporting changes were made in the Reporting Period.

Future key issues

ES.09. During rainy season, preventive measures for muddy water or other water pollutants from site surface flow to local stream such as Kong Yiu Channel, Ma Wat Channel, Ping Yuen River, Kwan Tei River or public area should be properly maintained. The Contractors should paid special attention on water quality mitigation measures and fully implement according ISEMM of the EM&A Manual, in particular for working areas near Ma Wat Channel and Ping Yuen River.

ES.10. In addition, all effluent discharge shall be ensure to fulfill Technical Memorandum of Effluent Discharged into Drainage and Sewerage Systems, inland and Coastal Waters criteria or discharge permits stipulation.

ES.11. Construction noise would be a key environmental issue during construction work of the Project. Noise mitigation measures such as using quiet plants should be implemented in accordance with the EM&A requirement.

ES.12. Since most of construction sites under the Project are located adjacent to villages, the Contractors should fully implement air quality mitigation measures to reduce construction dust emission.

Table of Contents

1 Introduction 1

1.1 Project Background 1

1.2 Report Structure 1

2 Project Organization and Construction progress 2

2.1 Construction Contract Packaging 2

2.2 Project Organization 4

2.3 Concurrent Projects 6

2.4 Construction Progress 6

2.5 Summary of Environmental Submissions 8

3 Project Organization and Construction progress 13

3.1 General 13

3.2 Monitoring Parameters 13

3.3 Monitoring Locations 13

3.4 Monitoring Frequency and Period 15

3.5 Monitoring Equipment 16

3.6 Monitoring Methodology 18

3.7 Equipment Calibration 20

3.8 Derivation of Action/Limit (A/L) Levels 20

3.9 Data Management and Data QA/QC Control 21

4 Air Quality Monitoring 22

4.1 General 22

4.2 Summary of Monitoring Results 22

5 Construction Noise Monitoring 24

5.1 General 24

5.2 Summary of Monitoring Results 24

6 Water Quality Monitoring 26

6.1 General 26

6.2 Summary of Monitoring Results 26

7 Ecology Monitoring 29

7.1 General 29

8 Waste Management 30

8.1 General Waste Management 30

8.2 Records of Waste Quantities 30

9 Site Inspections 32

9.1 requirements 32

10 Non-compliance, Complaints, Notifications of Summons and Prosecutions 35

10.1 Status of Non-compliance Environmental Complaint, Summons and Prosecution 35

11 Implementation Status of Mitigation Measures 38

11.1 General Requirements 38

12 Conclusions and Recommendations 39

12.1 Conclusions 39

12.2 Recommendations 39

List of tables

Table 2-1 Status of Environmental Licenses and Permits of the Contracts

Table 3-1 Summary of EM&A Requirements

Table 3-2 Impact Monitoring Stations - Air Quality

Table 3-3 Impact Monitoring Stations - Construction Noise

Table 3-4 Impact Monitoring Stations - Water Quality

Table 3-5 Air Quality Monitoring Equipment

Table 3-6 Construction Noise Monitoring Equipment

Table 3-7 Water Quality Monitoring Equipment

Table 3-8 Action and Limit Levels for Air Quality Monitoring

Table 3-9 Action and Limit Levels for Construction Noise

Table 3-10 Action and Limit Levels for Water Quality

Table 4-1 Summary of Air Quality Monitoring Results

Table 4-2 Summaries of Breaches of Air Quality A/L Levels

Table 5-1 Summary of Construction Noise Monitoring Results

Table 5-2 Summaries of Breaches of Construction Noise A/L Levels

Table 6-1 Summary of the Water Quality Monitoring Results ¡V Contracts SS C505 & 6

Table 6-2 Summary of the Water Quality Monitoring Results ¡V Contracts 2 & 3

Table 6-3 Summary of the Water Quality Monitoring Results ¡V Contract 6

Table 6-4 Summary of the Water Quality Monitoring Results ¡V Contracts 2 & 6

Table 6-5 Summaries of Breaches of the Existing Water Quality A/L Levels

Table 6-6 Summary of Water Quality Exceedance in the Reporting Period

Table 8-1 Summary of Quantities of Inert C&D Materials

Table 8-2 Summary of Quantities of C&D Wastes

Table 9-1 Summary of Reminders/Observations of Site Inspection ¡V Contract 2

Table 9-2 Summary of Reminders/Observations of Site Inspection ¡V Contract 3

Table 9-3 Summary of Reminders/Observations of Site Inspection ¡V Contract 4

Table 9-4 Summary of Reminders/Observations of Site Inspection ¡V Contract 6

Table 9-5 Summary of Reminders/Observations of Site Inspection ¡V Contract SS C505

Table 9-6 Summary of Reminders/Observations of Site Inspection ¡V Contract 7

Table 10-1 Statistical Summary of Environmental Complaints

Table 10-2 Statistical Summary of Environmental Summons

Table 10-3 Statistical Summary of Environmental Prosecution

Table 11-1 Environmental Mitigation Measures

List of Annexes

Appendix A Layout plan of the Project

Appendix B Environmental Management Organization Chart

Appendix C Designated Monitoring Locations as Recommended in the Approved EM&A Manual

Appendix D Monitoring Locations for Impact Monitoring

Appendix E Event and Action Plan

Appendix F Graphical Plots for Monitoring Result

Appendix G Weather information

Appendix H Waste Flow Table

Appendix I Implementation Schedule for Environmental Mitigation Measures

1 Introduction

1.1 Project Background

1.1.1. Civil Engineering and Development Department is the Project Proponent and the Permit Holder of Agreement No. CE 45/2008 (CE) Liantang / Heung Yuen Wai Boundary Control Point and Associated Works, which is a Designated Project to be implemented under Environmental Permit number EP-404/2011/C granted on 12 March 2015 and the latest Environmental Permit number EP-404/2011/D granted on 20 January 2017.

1.1.2. The Project consists of two main components: Construction of a Boundary Control Point (hereinafter referred as ¡§BCP¡¨); and Construction of a connecting road alignment. Layout plan of the Project is shown in Appendix A.

1.1.3. The proposed BCP is located at the boundary with Shenzhen near the existing Chuk Yuen Village, comprising a main passenger building with passenger and cargo processing facilities and the associated customs, transport and ancillary facilities. The connecting road alignment consists of six main sections:

1) Lin Ma Hang to Frontier Closed Area (FCA) Boundary ¡V this section comprises at-grade and viaducts and includes the improvement works at Lin Ma Hang Road;

2) Ping Yeung to Wo Keng Shan ¡V this section stretches from the Frontier Closed Area Boundary to the tunnel portal at Cheung Shan and comprises at-grade and viaducts including an interchange at Ping Yeung;

3) North Tunnel ¡V this section comprises the tunnel segment at Cheung Shan and includes a ventilation building at the portals on either end of the tunnel;

4) Sha Tau Kok Road ¡V this section stretches from the tunnel portal at Wo Keng Shan to the tunnel portal south of Loi Tung and comprises at-grade and viaducts including an interchange at Sha Tau Kok and an administration building;

5) South Tunnel ¡V this section comprises a tunnel segment that stretches from Loi Tung to Fanling and includes a ventilation building at the portals on either end of the tunnel as well as a ventilation building in the middle of the tunnel near Lau Shui Heung;

6) Fanling ¡V this section comprises the at-grade, viaducts and interchange connection to the existing Fanling Highway.

1.1.4. Action-United Environmental Services & Consulting has been commissioned as an Independent ET to implement the relevant EM&A program in accordance with the approved EM&A Manual, as well as the associated duties.

1.1.5. This is the 19^th Quarterly EM&A Summary Report presenting the monitoring results and inspection findings for the Reporting Period from 1 February to 30 April 2018.

1.2 Report Structure

1.2.1 The Quarterly Environmental Monitoring and Audit (EM&A) Summary Report is structured into the following sections:-

Section 1 Introduction

Section 2 Project Organization and Construction progress

Section 3 Summary of Impact monitoring Requirements

Section 4 Air Quality Monitoring

Section 5 Construction Noise Monitoring

Section 6 Water Quality Monitoring

Section 7 Ecology Monitoring

Section 8 Waste Management

Section 9 Site Inspection

Section 10 Non-compliance, Complaints, Notifications of Summons and Prosecutions

Section 11 Implementation Status of Mitigation Measures

Section 12 Conclusions and Recommendations

2 Project Organization and Construction progress

2.1 Construction Contract Packaging

2.1.1 To facilitate the project management and implementation, the Project would be divided by the following contracts:

¡P Contract 2 (CV/2012/08)

¡P Contract 3 (CV/2012/09)

¡P Contract 4 (NE/2014/02)

¡P Contract 5 (CV/2013/03)

¡P Contract 6 (CV/2013/08)

¡P Contract 7 (NE/2014/03)

¡P ArchSD Contract No. SS C505

2.1.2 The details of each contracts is summarized below and the delineation of each contracts is shown in Appendix A.

Contract 2 (CV/2012/08)

2.1.3 Contract 2 has awarded in December 2013 and construction work was commenced on 19 May 2014. Major Scope of Work of the Contract 2 is listed below:

¡P construction of an approximately 5.2km long dual two-lane connecting road (with about 0.4km of at-grade road and 4.8km of tunnel) connecting the Fanling Interchange with the proposed Sha Tau Kok Interchange;

¡P construction of a ventilation adit tunnel and the mid-ventilation building;

¡P construction of the north and south portal buildings of the Lung Shan Tunnel and their associated slope works;

¡P provision and installation of ventilation system, E&M works and building services works for Lung Shan tunnel and Cheung Shan tunnel and their portal buildings;

¡P construction of Tunnel Administration Building adjacent to Wo Keng Shan Road and the associated E&M and building services works; and

¡P construction of associated footpath, slopes, retaining structures, drainage, sewerage, waterworks, landscaping works and other ancillary works.

Contract 3 (CV/2012/09)

2.1.4 Contract 3 was awarded in July 2013 and construction work was commenced on 5 November 2013. Major Scope of Work of the Contract 3 is listed below:

¡P construction of four link roads connecting the existing Fanling Highway and the south portal of the Lung Shan Tunnel;

¡P realignment of the existing Tai Wo Service Road West and Tai Wo Service Road East;

¡P widening of the existing Fanling Highway (HyD¡¦s entrustment works);

¡P demolishing existing Kiu Tau vehicular bridge and Kiu Tau footbridge and reconstruction of the existing Kiu Tau Footbridge (HyD¡¦s entrustment works); and

¡P construction of associated footpath, slopes, retaining structures, drainage, sewerage, waterworks, landscaping works and other ancillary works.

Contract 4 (NE/2014/02)

2.1.5 Contract 4 was awarded in mid-April 2016 and construction work will be commenced on 2 May 2017. The scope of work of the Contract 4 includes:

¡P design, supply, delivery, installation, testing and commissioning of a traffic control and surveillance system for the connecting road linking up the Liantang / Heung Yuen Wai Boundary Control Point and the existing Fanling Highway.

Contract 5 (CV/2013/03)

2.1.6 Contract 5 has awarded in April 2013 and construction work was commenced in August 2013. Major Scope of Work of the Contract 5 is listed below:

¡P site formation of about 23 hectares of land for the development of the BCP;

¡P construction of an approximately 1.6 km long perimeter road at the BCP including a 175m long depressed road;

¡P associated diversion/modification works at existing local roads and junctions including Lin Ma Hang Road;

¡P construction of pedestrian subway linking the BCP to Lin Ma Hang Road;

¡P provision of resite area with supporting infrastructure for reprovisioning of the affected village houses; and

¡P construction of associated footpath, slopes, retaining structures, drainage, sewerage, waterworks, landscaping works and other ancillary works.

Contract 6 (CV/2013/08)

2.1.7 Contract 6 was awarded in June 2015 and construction work was commenced on 23 October 2015. Major Scope of Work of the Contract 6 would be included below:

Ÿ construction of an approximately 4.6km long dual two-lane connecting road (with about 0.6km of at-grade road, 3.3km of viaduct and 0.7km of tunnel) connecting the BCP with the proposed Sha Tau Kok Road Interchange and the associated ventilation buildings;

Ÿ associated diversion/modification works at access roads to the resite of Chuk Yuen Village;

Ÿ provision of sewage collection, treatment and disposal facilities for the BCP and the resite of Chuk Yuen Village;

Ÿ construction of a pedestrian subway linking the BCP to Lin Ma Hang Road;

Ÿ provisioning of the affected facilities including Wo Keng Shan Road garden; and

Ÿ construction of associated footpath, slopes, retaining structures, drainage, sewerage, waterworks, landscaping works and other ancillary works.

Contract 7 (NE/2014/03)

2.1.8 Contract 7 was awarded in December 2015 and the construction work was commenced 15 February 2016. Major Scope of Work of the Contract 7 would be included below:

Ÿ construction of the Hong Kong Special Administrative Region (HKSAR) portion of four vehicular bridge

Ÿ construction of one pedestrian bridge crossing Shenzhen (SZ) River (cross boundary bridges)

ArchSD Contract No. SS C505

2.1.9 SS C505 has been awarded in July 2015 and construction work was commenced on 1 September 2015. Major Scope of Work of the SS C505 would be included below:

Ÿ passenger-related facilities including processing kiosks and examination facilities for private cars and coaches, passenger clearance building and halls, the interior fitting works for the pedestrian bridge crossing Shenzhen River, etc.;

Ÿ cargo processing facilities including kiosks for clearance of goods vehicles, customs inspection platforms, X-ray building, etc.;

Ÿ accommodation for the facilities inside of the Government departments providing services in connection with the BCP;

Ÿ transport-related facilities inside the BCP including road networks, public transport interchange, transport drop-off and pick-up areas, vehicle holding areas and associated road furniture etc;

Ÿ a public carpark; and

Ÿ other ancillary facilities such as sewerage and drainage, building services provisions and electronic systems, associated environmental mitigation measure and landscape works.

2.2 Project Organization

2.2.1 The project organization is shown in Appendix B. The responsibilities of respective parties are:

Civil Engineering and Development Department (CEDD)

2.2.2 CEDD is the Project Proponent and the Permit Holder of the EP of the development of the Project and will assume overall responsibility for the project. An Independent Environmental Checker (IEC) shall be employed by CEDD to audit the results of the EM&A works carried out by the ET.

Architectural Services Department (ArchSD)

2.2.3 ArchSD acts as the works agent for Development Bureau (DEVB), for Contract SS C505 Liantang/ Heung Yuen Wai Boundary Control Point (BCP) ¡V BCP Buildings and Associated Facilities.

Environmental Protection Department (EPD)

2.2.4 EPD is the statutory enforcement body for environmental protection matters in Hong Kong.

Ronald Lu & Partners (Hong Kong) Ltd (The Architect)

2.2.5 Ronald Lu & Partners (Hong Kong) Ltd is appointed by ArchSD as an Architect for Contract SS C505 Liantang/ Heung Yuen Wai Boundary Control Point (BCP) ¡V BCP Buildings and Associated Facilities. It responsible for overseeing the construction works of Contract SS C505 and for ensuring that the works are undertaken by the Contractor in accordance with the specification and contract requirements. The duties and responsibilities of the Architect with respect to EM&A are:

Ÿ Monitor the Contractors¡¦ compliance with contract specifications, including the implementation and operation of the environmental mitigation measures and their effectiveness

Ÿ Monitor Contractors¡¦ and ET¡¦s compliance with the requirements in the Environmental Permit (EP) and EM&A Manual

Ÿ Facilitate ET¡¦s implementation of the EM&A programme

Ÿ Participate in joint site inspection by the ET and IEC

Ÿ Oversee the implementation of the agreed Event / Action Plan in the event of any exceedance

Ÿ Adhere to the procedures for carrying out complaint investigation

Ÿ Liaison with DSD, Engineer/Engineer¡¦s Representative, ET, IEC and the Contractor of the ¡§Construction of the DSD¡¦s Regulation of Shenzhen River Stage 4 (RSR 4)¡¨ Project discussing regarding the cumulative impact issues.

Engineer or Engineers Representative (ER)

2.2.6 The ER is responsible for overseeing the construction works and for ensuring that the works are undertaken by the Contractor in accordance with the specification and contract requirements. The duties and responsibilities of the ER with respect to EM&A are:

¡P Monitor the Contractors¡¦ compliance with contract specifications, including the implementation and operation of the environmental mitigation measures and their effectiveness

¡P Monitor Contractors¡¦s, ET¡¦s and IEC¡¦s compliance with the requirements in the Environmental Permit (EP) and EM&A Manual

¡P Facilitate ET¡¦s implementation of the EM&A programme

¡P Participate in joint site inspection by the ET and IEC

¡P Oversee the implementation of the agreed Event / Action Plan in the event of any exceedance

¡P Adhere to the procedures for carrying out complaint investigation

¡P Liaison with DSD, Engineer/Engineer¡¦s Representative, ET, IEC and the Contractor of the ¡§Construction of the DSD¡¦s Regulation of Shenzhen River Stage 4 (RSR 4)¡¨ Project discussing regarding the cumulative impact issues.

The Contractor(s)

2.2.7 There will be one contractor for each individual works contract. The Contractor(s) should report to the ER. The duties and responsibilities of the Contractor are:

¡P Comply with the relevant contract conditions and specifications on environmental protection

¡P Employ an Environmental Team (ET) to undertake monitoring, laboratory analysis and reporting of EM &A Facilitate ET¡¦s monitoring and site inspection activities

¡P Participate in the site inspections by the ET and IEC, and undertake any corrective actions

¡P Provide information / advice to the ET regarding works programme and activities which may contribute to the generation of adverse environmental impacts

¡P Submit proposals on mitigation measures in case of exceedances of Action and Limit levels in accordance with the Event / Action Plans

¡P Implement measures to reduce impact where Action and Limit levels are exceeded

¡P Adhere to the procedures for carrying out complaint investigation

Environmental Team (ET)

2.2.8 One ET will be employed for this Project. The ET shall not be in any way an associated body of the Contractor(s), and shall be employed by the Project Proponent/Contractor to conduct the EM&A programme. The ET should be managed by the ET Leader. The ET Leader shall be a person who has at least 7 years¡¦ experience in EM&A and has relevant professional qualifications. Suitably qualified staff should be included in the ET, and resources for the implementation of the EM&A programme should be allocated in time under the Contract(s), to enable fulfillment of the Project¡¦s EM&A requirements as specified in the EM&A Manual during construction of the Project. The ET shall report to the Project Proponent and the duties shall include:

¡P Monitor and audit various environmental parameters as required in this EM&A Manual

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

¡P Carry out regular site inspection to investigate and audit the Contractors¡¦ site practice, equipment/plant and work methodologies with respect to pollution control and environmental mitigation, and effect proactive action to pre-empt problems

¡P Monitor compliance with conditions in the EP, environmental protection, pollution prevention and control regulations and contract specifications

¡P Audit environmental conditions on site

¡P Report on the environmental monitoring and audit results to EPD, the ER, the lEC and Contractor(s) or their delegated representatives

¡P 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

¡P Liaise with the IEC on all environmental performance matters and timely submit all relevant EM&A proforma for approval by IEC

¡P Advise the Contractor(s) on environmental improvement, awareness, enhancement measures etc., on site

¡P Adhere to the procedures for carrying out complaint investigation

¡P Liaison with the client departments, Engineer/Engineer¡¦s Representative, ET, lEC and the Contractor(s) of the concurrent projects as listed under Section 2.3 below regarding the cumulative impact issues.

Independent Environmental Checker (IEC)

2.2.9 One IEC will be employed for this Project. The Independent Environmental Checker (IEC) should not be in any way an associated body of the Contractor(s) or the ET for the Project. The IEC should be employed by the Permit Holder (i.e., CEDD) prior to the commencement of the construction of the Project. The IEC should have at least 10 years¡¦ experience in EM&A and have relevant professional qualifications. The duty of IEC should be:

¡P Provide proactive advice to the ER and the Project Proponent on EM&A matters related to the project, independent from the management of construction works, but empowered to audit the environmental performance of construction

¡P Review and audit all aspects of the EM&A programme implemented by the ET

¡P Review and verify the monitoring data and all submissions in connection with the EP and EM&A Manual submitted by the ET

¡P Arrange and conduct regular, at least monthly site inspections of the works during construction phase, and ad hoc inspections if significant environmental problems are identified

¡P Check compliance with the agreed Event / Action Plan in the event of any exceedance

¡P Check compliance with the procedures for carrying out complaint investigation

¡P Check the effectiveness of corrective measures

¡P Feedback audit results to ET by signing off relevant EM&A proforma

¡P Check that the mitigation measures are effectively implemented

¡P Report the works conducted, the findings, recommendation and improvement of the site inspections, after reviewing ET¡¦s and Contractor¡¦s works, and advices to the ER and Project Proponent on a monthly basis

¡P Liaison with the client departments, Engineer/Engineer¡¦s Representative, ET, lEC and the Contractor(s) of the concurrent projects as listed under Section 2.3 below regarding the cumulative impact issues.

2.3 Concurrent Projects

2.3.1 The concurrent construction works that may be carried out include, but not limited to, the following:

(a) Regulation of Shenzhen River Stage IV;

(b) Widening of Fanling Highway ¡V Tai Hang to Wo Hop Shek Interchange ¡V Contract No. HY/2012/06;

(c) Construction of BCP facilities in Shenzhen.

2.4 Construction Progress

2.4.1 In the Reporting Period, the major construction activity conducted under the Project is located in Contracts 2, 3, 4, 6, 7 and SS C505 and they are summarized in below.

Contract 2 (CV/2012/08)

2.4.2 Construction work of Contract 2 was commenced on May 2014, the following activities were conducted in the Reporting Period.

Mid-Vent Portal	Ÿ Cavern internal structure and tunnel E&M activities Ÿ Construction of C&C structure and permanent drainage Ÿ Structure connecting adit and ventilation building Ÿ Ventilation building superstructure and backfilling activities Ÿ Ventilation building fitting out and E&M installation
North Portal	Ÿ Southbound and Northbound tunnel waterproofing and lining Ÿ Construction of cross passage and internal structure Ÿ Tunnel backfilling and E&M installation Ÿ Tunnel Boring Machine (TBM) North drive excavation and mucking out Ÿ North ventilation building structure and internal structure Ÿ Construction of retaining wall and permanent drainage Ÿ Site formation and construction of slip road Ÿ Drainage cleansing works and update on the water treatment plant Ÿ Cleansing on existing drainage system Ÿ Construction of temporary utility bridge across the mid-platform Ÿ Construction of temporary drainage to prepare for rainy season
South Portal	Ÿ Tunnel waterproofing, lining and backfilling. Ÿ Tunnel internal structure and cross passage Ÿ Construction of retaining wall and backfilling activities Ÿ South ventilation building external wall finishing, fitting out and E&M installations
Admin Building	Ÿ Construction of fence wall and permanent drainage Ÿ Admin building fitting out, underground utilities and E&M installation Ÿ Construction of building permanent access. Ÿ Internal fit out and E&M installation. Ÿ Soft landscaping work.

Contract 3 (CV/2012/09)

2.4.3 Contract commenced in November 2013, the following activities were conducted in the Reporting Period.

Ÿ Boundary wall for pumping station

Ÿ Cable Detection and Trial Trenches

Ÿ Installation of Noise Barrier Steel Column & Panel

Ÿ Remaining Works on New Kiu Tau Footbridge

Ÿ Noise Barrier Construction

Ÿ Viaduct Segment Erection

Ÿ Parapet Installation on Bridge Deck

Ÿ Construction of Profile Barrier & Planter Wall on Bridge Deck

Ÿ Stressing of External Tendon

Ÿ Construction of Retaining Wall Behind Abutment

Ÿ Installation of Sign Gantry

Ÿ Installation of deck cell

Ÿ Movement joint installation for the viaduct

Ÿ Road pavement works

Ÿ Demolition of Existing Kiu Tau Vehicular Bridge

Ÿ Water main laying works (on Grade and on bridge deck)

Ÿ Installation of Noise barrier steel column & panel, and sign gantry

Ÿ Road Drainage Work

Ÿ Bitumen paving on bridge deck

Ÿ Installation of deck cell inside the bridge deck

Ÿ Installation of movement joint on the bridge

Ÿ Construction of Retaining Wall Behind Abutment

Ÿ Landscaping works

Contract 4 (NE/2014/02)

2.4.4 The Contract was awarded in mid-April 2016 and the construction work was commenced on 2 May 2017. In this Reporting Period, construction activities conducted are listed below:

Ÿ System design and testing

Ÿ E&M installation at Admin Building

Ÿ E&M installation at Ventilation Building

Ÿ High mast erection

Ÿ E&M installation at OHVD in tunnel

Contract 5 (CV/2013/03)

1.1.1 The construction works under Contract 5 was substantially completed on 31 August 2016.

Contract 6 (CV/2013/08)

2.4.5 Contract 6 has awarded in June 2015 and construction work was commenced on 23 October 2015. In this Reporting Period, construction activities conducted are listed below:

Ÿ Bridge construction

Ÿ Tunneling Works

Ÿ Sewage Treatment Plant Construction

Ÿ Tunnel Ventilation Building Construction

Ÿ Slip Road/At-grade Road/Periphery Road Construction

Contract 7 (NE/2014/03)

2.4.6 Contract 7 has awarded in December 2015 and construction work was commenced on 15 February 2015. In this Reporting Period, construction activities conducted are listed below:

Ÿ Deck construction at Bridge A

Ÿ Column and deck construction at Bridge E

Ÿ Profile barrier construction at Bridge B, D&E

Ÿ Installation of Façade at Bridge C

Ÿ R/F Slab construction at Bridge C

Ÿ Installation of BMU at roof of Bridge C

Ÿ Drainage and watermains at perimeter road

Contract SS C505

2.4.7 Contract SS C505 has awarded in July 2015 and construction work was commenced on 1 September 2015. In this Reporting Period, construction activities conducted are listed below:

Ÿ Building no. 1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 16, 17, 18, 21, 22, 23, 24, 25, 27, 28, 30, 31 and 41 constructions

Ÿ Constructions of Steel Canopies (Building no. 32, 33, 34 and 35)

Ÿ Constructions of Master Water Meter Room 1, 2 and 3 (Building no. 42, 43, 44)

Ÿ Tower crane operation

Ÿ Bridge 1 - 5 construction works including retaining wall, road and finishes works

Ÿ Steel Canopies construction

Ÿ Underground drainage works, Road Works, CLP Cable laying and Landscaping

Ÿ Formwork and falsework for PTB¡¦s slab construction

Ÿ Construction PTB M/F, 1/F, 2/F and Roof flat slab

Ÿ Construction PTB non-structural wall, Underground Drainage and Utilities, Fence Wall, Southern Entrance Construction

Ÿ PTB backfilling works

Ÿ PTB Major Plant Rooms ABWF & MEP Installation, Lift and Escalator Installation by NSC

Ÿ Integrated ABWF & MEP Works in PTB, Building no. 1, 2, 3, 4, 5, 6, 7, 18, 36 and 41

Ÿ Canopies Construction

Ÿ Master Water Meter Room 1, 2 and 3 Construction

Ÿ Elevated Walkway E1, E2, E3 and E4 construction

Ÿ Tower Crane Dismantling Works

Ÿ Elevated Walkway E1, E2, E3 and E4 construction

2.5 Summary of Environmental Submissions

2.5.1 In according to the EP, the required documents have submitted to EPD which listed in below:

Ÿ Project Layout Plans of Contracts 2, 3, 4, 5, 6, 7 and SS C505

Ÿ Landscape Plan

Ÿ Topsoil Management Plan

Ÿ Environmental Monitoring and Audit Programme

Ÿ Baseline Monitoring Report (TCS00690/13/600/R0030v3) for the Project

Ÿ Waste Management Plan of the Contracts 2, 3, 4, 5, 6, 7 and SS C505

Ÿ Contamination Assessment Plan (CAP) and Contamination Assessment Report (CAR) for Po Kat Tsai, Loi Tung and the workshops in Fanling

Ÿ Vegetation Survey Report

Ÿ Woodland Compensation Plan

Ÿ Habitat Creation Management Plan

Ÿ Wetland Compensation Plan

2.5.2 Summary of the relevant permits, licenses, and/or notifications on environmental protection for the Project of each contracts are presented in Table 2-1.

Table 2-1 Status of Environmental Licenses and Permits of the Contracts

Item		Description	License/Permit Status
			Ref. no.		Effective Date	Expiry Date
Contract 2
1	Air pollution Control (Construction Dust) Regulation		Ref No.: 368864		31 Dec 2013	Till Contract ends
2	Chemical Waste Producer Registration		North Portal Waste Producers Number: No.5213-652-D2523-01		25 Mar 2014	Till Contract ends
			Mid-Vent Portal Waste Producers Number: No.5213-634-D2524-01		25 Mar 2014	Till Contract ends
			South Portal Waste Producers Number: No.5213-634-D2526-01		9 Apr 2014	Till Contract ends
3	Water Pollution Control Ordinance - Discharge License		No.WT00018374-2014 (South Portal )		3 Mar 2014	28 Feb 2019
			No. WT00023063-2015 (North Portal)		18 Dec 2015	31 Mar 2019
			No.: W5/1I392 (Admin Building)		28 Mar 2014	31 Mar 2019
			No.: WT00025594-2016 (Mid-Vent Portal)		7 Oct 2016	31 Mar 2019
4	Waste Disposal Regulation - Billing Account for Disposal of Construction Waste		Account No. 7019105		8 Jan 2014	Till Contract ends
5	Construction Noise Permit		GW-RN0744-17	North Portal	15-Nov-2017	09-May-2018
			GW-RN0747-17		15-Nov-2017	09-May-2018
			GW-RN0839-17		25-Dec-2017	17-Jun-2018
			GW-RN0047-18	Mid Vent	05-Feb-2018	01-Aug-2018
			GW-RN0049-18		05-Feb-2017	31-Jul-2018
			GW-RN0765-17	South Portal	01-Dec-2017	31-May-2018
			GW-RN0601-17		27-Sep-2017	21-Mar-2018
			GW-RN0673-17		28-Oct-2017	27-Apr-2018
			GW-RN0788-17		06-Dec-2017	05-Jun-2018
			GW-RN0176-18		30-Apr-2018	27-Oct-2018
			GW-RN0604-17	Admin Bldg	20-Sep-2017	16-Mar-2018
			GW-RN0142-18		5-Apr-2018	27-Sep-2018
			GW-RN0140-18	Cheung Shan Tunnel	3-Apr-2018	22-Sep-2018
6	Specified Process License (Mortar Plant Operation)		L-3-251(1)		12-Apr-2016	11-Apr-2021
Contract 3
1		Air pollution Control (Construction Dust) Regulation	Ref. No: 362101		17 Jul 2013	Till Contract ends
2		Chemical Waste Producer Registration	Waste Producers Number: No.:5113-634-C3817-01		7 Oct 2013	Till Contract ends
3		Water Pollution Control Ordinance - Discharge License	No.:WT00016832 ¡V 2013		28 Aug 13	31 Aug 2018
4		Waste Disposal Regulation - Billing Account for Disposal of Construction Waste	Account No. 7017914		2 Aug 13	Till Contract ends
5		Construction Noise Permit	GW-RN0500-17		29 Aug 2017	24 Feb 2018
			GW-RN0501-17		25 Aug 2017	24 Feb 2018
			GW-RN0508-17		16 Aug 2017	15 Feb 2018
			GW-RN0549-17		6 Sep 2017	5 Mar 2018
			GW-RN0564-17		1 Oct 2017	31 Mar 2018
			GW-RN0567-17		10 Sep 2017	21 Feb 2018
			GW-RN0571-17		30 Sep 2017	29 Mar 2018
			GW-RN0669-17		25 Oct 2017	7 Apr 2018
			GW-RN0697-17 (cancelled on 14 Mar 2018)		21 Nov 2017	cancelled on 14 Mar 2018
			GW-RN0721-17		26 Nov 2017	20 May 2018
			GW-RN0782-17		8 Dec 2017	26 May 2018
			GW-RN0785-17		19 Dec 2017	16 Jun 2018
			GW-RN0786-17		19 Dec 2017	18 Jun 2018
			GW-RN0801-17		22 Dec 2017	21 Jun 2018
			GW-RN0863-17		17 Jan 2018	5 Jul 2018
			GW-RN0043-18		25 Feb 2018	24 Aug 2018
			GW-RN0044-18		22 Feb 2018	21 Aug 2018
			GW-RN0102-18		14 Mar 2018	31 Aug 2018
			GW-RN0123-18		28 Mar 2018	5 Sep 2018
Contract 5
1		Air pollution Control (Construction Dust) Regulation	Ref. No: 359338		13 May 2013	Till the end of Contract
2		Chemical Waste Producer Registration	Waste Producers Number No.: 5213-642-S3735-01		8 Jun 2013	Till the end of Contract
3		Water Pollution Control Ordinance - Discharge License	No.: W5/1G44/1		8 Jun 13	30 Jun 2018
4		Waste Disposal Regulation - Billing Account for Disposal of Construction Waste	Account No. 7017351		29 Apr 13	Till the end of Contract
Contract 6
1		Air pollution Control (Construction Dust) Regulation	Ref. No: 390614		29 Jun 2015	Till the end of Contract
2		Chemical Waste Producer Registration	Waste Producers Number No.: 5213-652-C3969-01		31 Aug 2015	Till the end of Contract
3		Waste Disposal Regulation - Billing Account for Disposal of Construction Waste	Account No. 7022707		9 Jul 2015	Till the end of Contract
4		Water Pollution Control Ordinance - Discharge License	No.:WT00024574-2016		31 May 2016		31 May 2021
			No.:WT00024576-2016		31 May 2016		31 May 2021
			No.:WT00024742-2016		14 June 2016		30 June 2021
			No.:WT00024746-2016		14 June 2016		30 June 2021
5		Construction Noise Permit	GW-RW0598-17		18 Sep 2017		17 Mar 2018
			GW-RW0684-17		30 Oct 2017		29 Apr 2018
			GW-RN0837-17		25 Dec 2017		28 Feb 2018
			GW-RW0668-17		16-Jan-2018		15-Jul-2018
			GW-RW0086-18		1 Mar 2018		31 Aug 2018
			GW-RW0127-18		25 Mar 2018		27 May 2018
			GW-RW0188-18		27 Apr 2018		27 May 2018
			GW-RW0121-18		30 Apr 2018		29 Oct 2018
Contract SS C505
1		Air pollution Control (Construction Dust) Regulation	Ref. No: 390974		13 Jul 2015	Till the end of Contract
2		Chemical Waste Producer Registration	Waste Producer No.: 5213-642-L1048-07		16 Sep 2015	Till the end of Contract
3		Water Pollution Control Ordinance - Discharge License	No.: WT00024865-2016		8 Jul 2016	30 Nov 2020
4		Waste Disposal Regulation - Billing Account for Disposal of Construction Waste	Account No. 7022831		23 Jul 2015	Till the end of Contract
5		Construction Noise Permit	GW-RN0624-17		6 Oct 2017	5 Apr 2018
			GW-RN0720-17		26 Nov 2017	25 May 2018
			GW-RN0114-18		5 Apr 2018	4 Oct 2018
Contract 7
1		Air pollution Control (Construction Dust) Regulation	Ref. No: 397015		21 Dec 2015		Till the end of Contract
2		Chemical Waste Producer Registration	Waste Producer No.: 5214-641-K3202-01		24 Mar 2016		Till the end of Contract
3		Water Pollution Control Ordinance - Discharge License	No.: WT00024422-2016		10 May 2016		31 May 2021
4		Waste Disposal Regulation - Billing Account for Disposal of Construction Waste	Account No. 7024129		21 Jan 2016		Till the end of Contract
5		Construction Noise Permit	GW-RN0705-17		5 Nov 2017		4 May 2018
Contract 4
1		Air pollution Control (Construction Dust) Regulation	Ref. No. 405353		22 July 2016			Till the end of Contract
2		Waste Disposal Regulation - Billing Account for Disposal of Construction Waste	Account No. 7024973		13 May 2016			Till the end of Contract

3 Project Organization and Construction progress

3.1 General

3.1.1 The Environmental Monitoring and Audit requirements are set out in the Approved EM&A manual. Environmental issues such as air quality, construction noise and water quality were identified as the key issues during the construction phase of the Project.

3.1.2 A summary of construction phase EM&A requirements are presented in the sub-sections below.

3.2 Monitoring Parameters

3.2.1 The EM&A program of construction phase monitoring shall cover the following environmental issues:

• Air quality;

• Construction noise; and

• Water quality

3.2.2 A summary of the monitoring parameters is presented in Table 3-1.

Table 3-1 Summary of EM&A Requirements

Environmental Issue	Parameters
Air Quality	Ÿ 1-hour TSP by Real-Time Portable Dust Meter; and Ÿ 24-hour TSP by High Volume Air Sampler.
Noise	Ÿ Leq(30min) in normal working days (Monday to Saturday) 07:00-19:00 except public holiday; and Ÿ 3 sets of consecutive Leq(5min) on restricted hours i.e. 19:00 to 07:00 next day, and whole day of public holiday or Sunday Ÿ Supplementary information for data auditing, statistical results such as L10 and L90 shall also be obtained for reference.
Water Quality	In-situ Measurements Ÿ Dissolved Oxygen Concentration (mg/L); Ÿ Dissolved Oxygen Saturation (% ); Ÿ Turbidity (NTU); Ÿ pH unit; Ÿ Water depth (m); and Ÿ Temperature (¢J).
	Laboratory Analysis Ÿ Suspended Solids (mg/L)

3.3 Monitoring Locations

3.3.1 The designated monitoring locations as recommended in the EM&A Manual are shown in Appendix C. As the access to some of the designated monitoring locations was questionable due to safety reason or denied by the landlords, alternative locations therefore have had proposed. The latest alternative monitoring locations has been updated in the revised EM&A Programme (Rev.7) which approved by EPD on 7 April 2017. Besides, Location AM1b was temporary suspended (24-hour TSP monitoring) since 27 April 2018 as the rented land was demolished and returned to the landlord. Alterative location to replaced AM1b is being seeking by ET for IEC and EPD approval. Table 3-2, Table 3-3 and Table 3-4 are respectively listed the air quality, construction noise and water quality monitoring locations for the Project and a map showing these monitoring stations is presented in Appendix D.

Table 3-2 Impact Monitoring Stations - Air Quality

Station ID	Description	Works Area	Related to the Work Contract
AM1b^	Open area at Tsung Yuen Ha Village	BCP	SS C505 Contract 7
AM2	Village House near Lin Ma Hang Road	LMH to Frontier Closed Area	Contract 6
AM3	Ta Kwu Ling Fire Service Station of Ta Kwu Ling Village.	LMH to Frontier Closed Area	Contract 6
AM4b^	House no. 10B1 Nga Yiu Ha Village	LMH to Frontier Closed Area	Contract 6
AM5a^	Ping Yeung Village House	Ping Yeung to Wo Keng Shan	Contract 6
AM6	Wo Keng Shan Village House	Ping Yeung to Wo Keng Shan	Contract 6
AM7b^@	Loi Tung Village House	Sha Tau Kok Road	Contract 2 Contract 6
AM8	Po Kat Tsai Village No. 4	Po Kat Tsai	Contract 2
AM9b#	Nam Wa Po Village House No. 80	Fanling	Contract 3

# Proposal for the change of air quality monitoring location from AM9a to AM9b was submitted to EPD on 4 Nov 2013 after verified by the IEC and it was approved by EPD (EPD¡¦s ref.: (15) in EP 2/N7/A/52 Pt.10 dated 8 Nov 2013).

* Proposal for the change of air quality monitoring location from AM1to AM1a was submitted to EPD on 24 March 2014 after verified by the IEC. It was approved by EPD (EPD¡¦s ref.: (6) in EP 2/N7/A/52 Pt.12 dated 9 Jun 2014).

@ Proposal for the change of air quality monitoring location from AM7a to AM7b was submitted to EPD on 4 June 2014 after verified by the IEC. It was approved by EPD (EPD¡¦s ref.: (7) in EP 2/N7/A/52 Pt.12 dated 9 Jun 2014).

^ Proposal for change of air quality monitoring locations was enclosed in the updated EM&A Programme which approval by EPD on 29 Mar 2016. Besides, Location AM1b was temporary suspended (24-hour TSP monitoring) since 27 April 2018 as the rented land was demolished and returned to the landlord. Alterative location to replaced AM1b is being seeking by ET for IEC and EPD approval.

Table 3-3 Impact Monitoring Stations - Construction Noise

Station ID	Description	Works Area	Related to the Work Contract
NM1	Tsung Yuen Ha Village House No. 63	BCP	SS C505 Contract 7
NM2a#	Village House near Lin Ma Hang Road	Lin Ma Hang to Frontier Closed Area	Contract 6
NM3	Ping Yeung Village House (facade facing northeast)	Ping Yeung to Wo Keng Shan	Contract 6
NM4	Wo Keng Shan Village House	Ping Yeung to Wo Keng Shan	Contract 6
NM5	Village House, Loi Tung	Sha Tau Kok Road	Contract 2, Contract 6
NM6	Tai Tong Wu Village House 2	Sha Tau Kok Road	Contract 2, Contract 6
NM7	Po Kat Tsai Village	Po Kat Tsai	Contract 2
NM8	Village House, Tong Hang	Fanling	Contract 2 Contract 3
NM9	Village House, Kiu Tau Village	Fanling	Contract 3
NM10	Nam Wa Po Village House No. 80	Fanling	Contract 3

# Proposal for the change of construction noise monitoring location from NM2 to NM2a was verified by the IEC on 6 May 2016 and was effective on 9 May 2016.

Table 3-4 Impact Monitoring Stations - Water Quality

Station ID	Description	Coordinates of Designated / Alternative Location		Nature of the location	Related to the Work Contract
WM1	Downstream of Kong Yiu Channel	833 679	845 421	Alternative location located at upstream 51m of the designated location	SS C505 Contract 6
WM1- Control	Upstream of Kong Yiu Channel	834 185	845 917	NA	SS C505 Contract 6
WM2A	Downstream of River Ganges	834 204	844 471	Alternative location located at downstream 81m of the designated location	Contract 6
WM2A(a)*	Downstream of River Ganges	834 191	844 474	Alternative location located at upstream 70m of the designated location	Contract 6
WM2A- Controlx#	Upstream of River Ganges	835 377	844 188	Alternative location located at upstream 160m of the designated location	Contract 6
WM2B	Downstream of River Ganges	835 433	843 397	NA	Contract 6
WM2B- Control	Upstream of River Ganges	835 835	843 351	Alternative location located at downstream 31m of the designated location	Contract 6
WM3x#	Downstream of River Indus	836 206	842 270	Alternative location located at downstream 180m of the designated location	Contract 2 Contract 6
WM3- Control	Upstream of River Indus	836 763	842 400	Alternative location located at downstream 26m of the designated location	Contract 2# Contract 6
WM4	Downstream of Ma Wat Channel	833 850	838 338	Alternative location located at upstream 11m of the designated location	Contract 2 Contract 3
WM4¡V Control A	Kau Lung Hang Stream	834 028	837 695	Alternative location located at downstream 28m of the designated location	Contract 2 Contract 3
WM4¡V Control B	Upstream of Ma Wat Channel	833760	837395	Alternative location located at upstream 15m of the designated location	Contract 2 Contract 3

Note: EPD has approved the revised EM&A Programme (Rev.7) which proposed that (1) if the measured water depth of the monitoring station is lower than 150 mm, alternative location based on the criteria were selected to perform water monitoring; and (2) If no suitable alternative location could be found within 15m far from the original location, the sampling at that location will be cancelled since sampling at too far from the designated location could not make a representative sample in accordance with the updated EM&A Programme (Rev. 07) (Section 4.1.4) (EPD ref.: ( ) in EP2/N7/A/52 Ax(1) Pt.20 dated 7 April 2017)

(*) Proposal for the change of water monitoring location from WM2A to WM2A(a) was verified by the IEC and it was approved by EPD. (EPD¡¦s ref. (10) in EP 2/N7/A/52 Pt.19)

(#) Proposal for the change of water quality monitoring location (EM3x and WM2A-Cx was included in the EM&A Programme Rev .05 which approved by EPD on 29 March 2016 (EPD ref.: (3) in EP2/N7/A/52 Ax(1) Pt.19)

3.4 Monitoring Frequency and Period

3.4.1 The requirements of impact monitoring are stipulated in Sections 2.1.6, 3.1.5 and 4.1.6 of the approved EM&A Manual and presented as follows.

Air Quality Monitoring

3.4.2 Frequency of impact air quality monitoring is as follows:

Ÿ 1-hour TSP	3 times every six days during course of works
Ÿ 24-hour TSP	Once every 6 days during course of works.

Noise Monitoring

3.4.3 One set of L_eq(30min) as 6 consecutive L_eq(5min) between 0700-1900 hours on normal weekdays and once every week during course of works. If construction work necessary to carry out at other time periods, i.e. restricted time period (19:00 to 07:00 the next morning and whole day on public holidays) (hereinafter referred as ¡§the restricted hours¡¨), 3 consecutive L_eq(5min) measurement will depended CNP requirements to undertake. Supplementary information for data auditing, statistical results such as L₁₀ and L₉₀ shall also be obtained for reference.

Water Quality Monitoring

3.4.4 The water quality monitoring frequency shall be 3 days per week during course of works. The interval between two sets of monitoring shall not be less than 36 hours.

3.5 Monitoring Equipment

Air Quality Monitoring

3.5.1 The 24-hour and 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. If the ET proposes to use a direct reading dust meter to measure 1-hour TSP levels, it shall submit sufficient information to the IEC to approve.

3.5.2 The filter paper of 24-hour TSP measurement shall be determined by HOKLAS accredited laboratory.

3.5.3 All equipment to be used for air quality monitoring is listed in Table 3-5.

Table 3-5 Air Quality Monitoring Equipment

Equipment	Model
24-Hour TSP
High Volume Air Sampler	TISCH High Volume Air Sampler, HVS Model TE-5170
Calibration Kit	TISCH Model TE-5025A
1-Hour TSP
Portable Dust Meter	Sibata LD-3B Laser Dust monitor Particle Mass Profiler & Counter

Wind Data Monitoring Equipment

3.5.4 According to the approved EM&A Manual, 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:

1) The wind sensors should be installed 10 m above ground so that they are clear of obstructions or turbulence caused by buildings.

2) The wind data should be captured by a data logger. The data shall be downloaded for analysis at least once a month.

3) The wind data monitoring equipment should be re-calibrated at least once every six months.

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

3.5.5 ET has liaised with the landlords of the successful granted HVS installation premises. However, the owners rejected to provide premises for wind data monitoring equipment installation.

3.5.6 Under this situation, the ET proposed alternative methods to obtain representative wind data. Meteorological information as extracted from ¡§the Hong Kong Observatory Ta Kwu Ling Station¡¨ is alternative method to obtain representative wind data. For Ta Kwu Ling Station, it is located nearby the Project site. Moreover, this station is located at 15m above mean sea level while its anemometer is located at 13m above the existing ground which in compliance with the general setting up requirement. Furthermore, this station also can be to provide the humidity, rainfall, and air pressure and temperature etc. meteorological information. In Hong Kong of a lot development projects, weather information extracted from Hong Kong Observatory is common alternative method if weather station installation not allowed.

Noise Monitoring

3.5.7 Sound level meter in compliance with the International Electrotechnical Commission Publications 651: 1979 (Type 1) and 804: 1985 (Type 1) specifications shall be used for carrying out the noise monitoring. The sound level meter shall be checked using an acoustic calibrator. The wind speed shall be checked with a portable wind speed meter capable of measuring the wind speed in m s^-1.

3.5.8 Noise monitoring equipment to be used for monitoring is listed in Table 3-6.

Table 3-6 Construction Noise Monitoring Equipment

Equipment	Model
Integrating Sound Level Meter	B&K Type 2238 or Rion NL-31 or Rion NL-52
Calibrator	B&K Type 4231 or Rion NC-74 or Quest QC-20
Portable Wind Speed Indicator	Testo Anemometer

3.5.9 Sound level meters listed above comply with the International Electrotechnical Commission Publications 651: 1979 (Type 1) and 804: 1985 (Type 1) specifications, as recommended in TM issued under the NCO. The acoustic calibrator and sound level meter to be used in the impact monitoring will be calibrated yearly.

Water Quality Monitoring

3.5.10 DO and water temperature should be measured in-situ by a DO/temperature meter. The instrument should be portable and weatherproof using a DC power source. It should have a membrane electrode with automatic temperature compensation complete with a cable. The equipment should be capable of measuring:

• DO level in the range of 0-20 mg/l and 0-200% saturation; and

• temperature of between 0 and 45 degree Celsius.

3.5.11 A portable pH meter capable of measuring a range between 0.0 and 14.0 should be provided to measure pH under the specified conditions accordingly to the APHA Standard Methods.

3.5.12 The instrument should be portable and weatherproof using a DC power source. It should have a photoelectric sensor capable of measuring turbidity between 0-1000 NTU.

3.5.13 A portable, battery-operated echo sounder or tape measure will be used for the determination of water depth at each designated monitoring station as appropriate.

3.5.14 A water sampler e.g. Kahlsico Water Sampler, which is a transparent PVC cylinder with capacity not less than 2 litres, will be used for water sampling if water depth over than 0.5m. For sampling from very shallow water depths e.g. <0.5 m, water sample collection will be directly from water surface below 100mm use sampling plastic bottle to avoid inclusion of bottom sediment or humus. Moreover, Teflon/stainless steel bailer or self-made sampling buckets maybe used for water sampling. The equipment used for sampling will be depended the sampling location and depth situations.

3.5.15 Water samples for laboratory measurement of SS will be collected in high density polythene bottles, packed in ice (cooled to 4 ºC without being frozen), and delivered to the laboratory in the same day as the samples were collected.

3.5.16 Analysis of suspended solids should be carried out in a HOKLAS or other accredited laboratory. Water samples of about 1L should be collected at the monitoring stations for carrying out the laboratory suspended solids determination. The SS determination work should start within 24 hours after collection of the water samples. The SS analyses should follow the APHA Standard Methods 2540D with Limit of Reporting of 2 mg/L.

3.5.17 Water quality monitoring equipment used in the impact monitoring is listed in Table 3-7. Suspended solids (SS) analysis is carried out by a local HOKLAS-accredited laboratory, namely ALS Technichem (HK) Pty Ltd.

Table 3-7 Water Quality Monitoring Equipment

Equipment	Model
Water Depth Detector	Eagle Sonar or tape measures
Water Sampler	A 2-litre transparent PVC cylinder with latex cups at both ends or teflon/stainless steel bailer or self-made sampling bucket
Thermometer & DO meter	YSI PRO20 Handheld Dissolved Oxygen Instrument / YSI 550A Multifunctional Meter
pH meter	AZ8685 pH pen-style meter
Turbidimeter	Hach 2100Q
Sample Container	High density polythene bottles (provided by laboratory)
Storage Container	¡¥Willow¡¦ 33-liter plastic cool box with Ice pad

3.6 Monitoring Methodology

1-hour TSP Monitoring

3.6.1 The 1-hour TSP monitor was a brand named ¡§Sibata LD-3B Laser Dust monitor Particle Mass Profiler & Counter¡¨ which is a portable, battery-operated laser photometer. The 1-hour TSP meter provides a real time 1-hour TSP measurement based on 90^o light scattering. The 1-hour TSP monitor consists of the following:

(a.) A pump to draw sample aerosol through the optic chamber where TSP is measured;

(b.) A sheath air system to isolate the aerosol in the chamber to keep the optics clean for maximum reliability; and

(c.) A built-in data logger compatible with Windows based program to facilitate data collection, analysis and reporting.

3.6.2 The 1-hour TSP meter is used within the valid period as follow manufacturer¡¦s Operation and Service Manual.

24-hour TSP Monitoring

3.6.3 The equipment used for 24-hour TSP measurement is Tisch Environmental, Inc. Model TE-5170 TSP high volume air sampling system, which complied with EPA Code of Federal Regulation, Appendix B to Part 50. The High Volume Air Sampler (HVS) consists of the following:

(a.) An anodized aluminum shelter;

(b.) A 8¡¨x10¡¨ stainless steel filter holder;

(c.) A blower motor assembly;

(d.) A continuous flow/pressure recorder;

(e.) A motor speed-voltage control/elapsed time indicator;

(f.) A 7-day mechanical timer, and

(g.) A power supply of 220v/50 Hz

3.6.4 The HVS is operated and calibrated on a regular basis in accordance with the manufacturer¡¦s instruction using Tisch Calibration Kit Model TE-5025A. Calibration would carry out in two month interval.

3.6.5 24-hour TSP is collected by the ET on filters of HVS and quantified by a local HOKLAS accredited laboratory, ALS Technichem (HK) Pty Ltd (ALS), upon receipt of the samples. The ET keep all the sampled 24-hour TSP filters in normal air conditioned room conditions, i.e. 70% RH (Relative Humidity) and 25^oC, for six months prior to disposal.

Noise Monitoring

3.6.6 Noise measurements were taken in terms of the A-weighted equivalent sound pressure level (L_eq) measured in decibels dB(A). Supplementary statistical results (L₁₀ and L₉₀) were also obtained for reference.

3.6.7 During the monitoring, all noise measurements were performed with the meter set to FAST response and on the A-weighted equivalent continuous sound pressure level (L_eq). Leq_(30min) in six consecutive Leq_(5min) measurements were used as the monitoring parameter for the time period between 0700-1900 hours on weekdays; and also Leq_(15min) in three consecutive Leq_(5min) measurements is used as monitoring parameter for other time periods (e.g. during restricted hours), if necessary.

3.6.8 Prior of noise measurement, the accuracy of the sound level meter is checked using an acoustic calibrator generating a known sound pressure level at a known frequency. The checking was performed before and after the noise measurement.

Water Quality

3.6.9 Water quality monitoring is conducted at the designated locations. The sampling produce with the in-situ monitoring are presented as below:

Sampling Procedure

3.6.10 A Digital Global Positioning System (GPS) is used to identify the designated monitoring stations prior to water sampling. A portable, battery-operated echo sounder is used for the determination of water depth at each station. At each station, water sample would be collected from 0.1m below water surface or the water surface to prevent the river bed sediment for stirring.

3.6.11 The sample container will be rinsed with a portion of the water sample. The water sample then will be transferred to the high-density polythene bottles as provided by the laboratory, labeled with a unique sample number and sealed with a screw cap.

3.6.12 Before sampling, general information such as the date and time of sampling, weather condition as well as the personnel responsible for the monitoring would be recorded on the field data sheet.

3.6.13 A ¡¥Willow¡¦ 33-liter plastic cool box packed with ice will be used to preserve the water samples prior to arrival at the laboratory for chemical determination. The water temperature of the cool box is maintained at a temperature as close to 4⁰C as possible without being frozen. Samples collected are delivered to the laboratory upon collection.

In-situ Measurement

3.6.14 Instrument including YSI PRO20 Handheld Dissolved Oxygen Instrument or YSI 550A Multifunctional Meter is used for water in-situ measures, which automates the measurements and data logging of temperature, dissolved oxygen and dissolved oxygen saturation. Before each round of monitoring, the dissolved oxygen probe would be calibrated by the wet bulb method.

3.6.15 A portable AZ8685 pH pen-style meter is used for in-situ pH measurement. The pH meter is capable of measuring pH in the range of 0 ¡V 14 and readable to 0.1.

3.6.16 A portable Hach 2100Q Turbidimeter is used for in-situ turbidity measurement. The turbidity meter is capable of measuring turbidity in the range of 0 ¡V 1000 NTU. StablCal^® Standards of known NTU are used for calibration of the instrument before and after measurement.

3.6.17 All in-situ measurement equipment are calibrated by HOKLAS accredited laboratory of three month interval.

Laboratory Analysis

3.6.18 All water samples are analyzed with Suspended Solids (SS) as specified in the EM&A Manual by a local HOKLAS-accredited testing laboratory (ALS Technichem (HK) Pty Ltd HOKLAS registration no. 66). SS analysis is determined by the laboratory upon receipt of the water samples using APHA Standard Methods 2540D (namely ALS Method EA-025 as accredited HOKLAS Scheme) started within 48 hours of water sample receipt.

3.7 Equipment Calibration

3.7.1 Calibration of the HVS is performed upon installation and thereafter at bimonthly intervals in accordance with the manufacturer¡¦s instruction using the certified standard calibrator (TISCH Model TE-5025A). Moreover, the Calibration Kit would be calibrated annually. The calibration data are properly documented and the records are maintained by ET for future reference.

3.7.2 The 1-hour TSP meter was calibrated by the supplier prior to purchase. Zero response of the equipment would be checked before and after each monitoring event. Annually calibration with the High Volume Sampler (HVS) in same condition would be undertaken by the Laboratory.

3.7.3 The sound level meter and calibrator are calibrated and certified by a laboratory accredited under HOKLAS or any other international accreditation scheme at yearly basis.

3.7.4 All water quality monitoring equipment is calibrated by HOKLAS accredited laboratory of three month intervals.

3.7.5 The calibration certificates of all monitoring equipment used for the impact monitoring program in the Reporting Period and the HOKLAS accredited certificate of laboratory are presented in the relevant monthly EM&A reports.

3.8 Derivation of Action/Limit (A/L) Levels

3.8.1 The baseline results form the basis for determining the environmental acceptance criteria for the impact monitoring. According to the approved Environmental Monitoring and Audit Manual, the air quality, construction noise and water quality criteria were set up, namely Action and Limit levels are listed in Tables 3-8, 3-9 and 3-10.

Table 3-8 Action and Limit Levels for Air Quality Monitoring

Monitoring Station	Action Level (mg /m^3)		Limit Level (mg/m^3)
	1-hour TSP	24-hour TSP	1-hour TSP	24-hour TSP
AM1b	265	143	500	260
AM2	268	149
AM3	269	145
AM4b	267	148
AM5a	268	143
AM6	269	148
AM7b	275	156
AM8	269	144
AM9b	271	151

Table 3-9 Action and Limit Levels for Construction Noise

Monitoring Location	Action Level	Limit Level in dB(A)
	Time Period: 0700-1900 hours on normal weekdays
NM1, NM2a, NM3, NM4, NM5, NM6, NM7, NM8, NM9, NM10	When one or more documented complaints are received	75 dB(A)^Note 1 & Note 2

Note 1: Acceptable Noise Levels for school should be reduced to 70 dB(A) and 65 dB(A) during examination period

Note 2: If works are to be carried out during restricted hours, the conditions stipulated in the construction noise permit issued by the NCA have to be followed.

Table 3-10 Action and Limit Levels for Water Quality

Parameter	Performance criteria	Monitoring Location
		WM1	WM2A(a)	WM2B	WM3x		WM4
DO (mg/L)	Action Level	^(*^)4.23	^(**^)4.00	^(*^)4.74	^(**^)4.00		^(*^)4.14
	Limit Level	^(#)4.19	^(**^)4.00	^(#)4.60	^(**^)4.00		^(#)4.08
Turbidity (NTU)	Action Level	51.3	24.9	11.4	13.4		35.2
		AND 120% of upstream control station of the same day
	Limit Level	67.6	33.8	12.3	14.0		38.4
		AND 130% of upstream control station of the same day
SS (mg/L)	Action Level	54.5	14.6	11.8	12.6		39.4
		AND 120% of upstream control station of the same day
	Limit Level	64.9	17.3	12.4	12.9	45.5
		AND 130% of upstream control station of the same day
Remarks: ^(*^)The Proposed Action Level of Dissolved Oxygen is adopted to be used 5%-ile of baseline data ^(**^)The Proposed Action & Limit Level of Dissolved Oxygen is used 4mg/L ^(#) The Proposed Limit Level of Dissolved Oxygen is adopted to be used 1%-ile of baseline data

3.8.2 Should non-compliance of the environmental quality criteria occurs, remedial actions will be triggered according to the Event and Action Plan which presented in Appendix E.

3.9 Data Management and Data QA/QC Control

3.9.1 All monitoring data will be handled by the ET¡¦s in-house data recording and management system. The monitoring data recorded in the equipment will be downloaded directly from the equipment at the end of each monitoring day. The downloaded monitoring data will input into a computerized database properly maintained by the ET. The laboratory results will be input directly into the computerized database and checked by personnel other than those who input the data.

3.9.2 For monitoring parameters that require laboratory analysis, the local laboratory shall follow the QA/QC requirements as set out under the HOKLAS scheme for the relevant laboratory tests.

4

4 Air Quality Monitoring

4.1 General

4.1.1 In the Reporting Period, construction works under the project have been commenced in Contracts 2, 3, 4, 6, 7 and Contract SS C505 and air quality monitoring was performed at all designated locations.

4.2 Summary of Monitoring Results

4.2.1 Summary of air quality monitoring results during the Reporting Period are tabulated in Table 4-1. The relevant graphical plots throughout the Reporting Period are presented in Appendix F.

Table 4-1 Summary of Air Quality Monitoring Results

Monitoring Location	1-hour TSP (µg/m^3)			24-hour TSP (µg/m^3)
	Max	Min	Mean	Max	Min	Mean
AM1b (#)	81	47	64	120	26	73
Record Date	6-Feb-18	27-Feb-18	45 events	5-Feb-18	22-Feb-18	14 events
AM2	99	46	68	147	22	115
Record Date	3-Apr-18	27-Feb-18	45 events	6-Mar-18	22-Feb-18	15 events
AM3	89	48	67	134	29	84
Record Date	3-Apr-18	27-Feb-18 10-Mar-18	45 events	10-Apr-18	22-Feb-18	15 events
AM4b	120	34	62	92	24	66
Record Date	27-Apr-18	2-Feb-18	45 events	7-Mar-18	23-Feb-18	15 events
AM5a	114	32	60	128	27	70
Record Date	27-Apr-18	2-Feb-18	45 events	6-Feb-18	23-Feb-18	15 events
AM6	130	35	63	131	55	98
Record Date	27-Apr-18	2-Feb-18	45 events	11-Apr-18	5-Apr-18	15 events
AM7b	95	39	61	151	45	101
Record Date	8-Feb-18	2-Feb-18	45 events	24-Mar-18	23-Feb-18	15 events
AM8	82	41	60	83	24	51
Record Date	8-Feb-18	20-Feb-18 9-Mar-18	45 events	24-Mar-18	7-Mar-18	15 events
AM9b	88	41	62	348	47	87
Record Date	22-Mar-18	10-Mar-18	45 events	28-Feb-18	16-Feb-18	15 events

Remark: Bold and underlined indicate limit level exceedance.

(#) 24-hour TSP monitoring at AM1b has been temporary suspended since 27 April 2018 as the area for AM1b was demolished and returned to the landlord. Alterative location is being seeking by ET for IEC and EPD approval.

4.2.2 Breaches of air quality A/L levels and statistical analysis of compliance for the air quality monitoring results are summarized in Table 4-2.

Table 4-2 Summaries of Breaches of Air Quality A/L Levels

Location	Exceedance	1-hour TSP	24- hour TSP	Total
AM1	Action Level	0	0	0
	Limit Level	0	0	0
AM2	Action Level	0	0	0
	Limit Level	0	0	0
AM3	Action Level	0	0	0
	Limit Level	0	0	0
AM4a	Action Level	0	0	0
	Limit Level	0	0	0
AM5a	Action Level	0	0	0
	Limit Level	0	0	0
AM6	Action Level	0	0	0
	Limit Level	0	0	0
AM7b	Action Level	0	0	0
	Limit Level	0	0	0
AM8	Action Level	0	0	0
	Limit Level	0	0	0
AM9b	Action Level	0	0	0
	Limit Level	0	1	1

4.2.3 In the Reporting Period, 24-hour TSP monitoring at AM1b has been temporary suspended since 27 April 2018 as the area for AM1b was demolished and returned to the landlord. Alterative location is being seeking by ET for IEC and EPD approval.

4.2.4 In the Reporting Period, all the 1-hour TSP monitoring results were below the Action/Limit Levels. For 24-hour TSP, there was 1 Limit Level exceedance recorded specifically at AM9b on 28 Feb 2018. Notification of Exceedance (NOE) was issued to relevant parties upon confirmation of the result and Investigation Reports for the exceedances have conducted by ET accordingly. Investigation results revealed that the Contractor had properly implemented dust mitigation measures such covering of the stockpile and providing water spraying for dusty haul road and dusty area. Since Joss paper burning was suspected to be conducted during period of sampling at AM9n, which affecting the monitoring result, it was conducted that the exceedance was not caused by the works under the Project.

4.2.5 The summary of weather conditions during the Reporting Period is presented in Appendix G.

5 Construction Noise Monitoring

5.1 General

5.1.1 In the Reporting Period, construction works under the project have been commenced in Contracts 2, 3, 4, 6, 7 and Contract SS C505 and noise monitoring was performed at all designated locations.

5.2 Summary of Monitoring Results

5.2.1 The sound level meter was set in 1m from the exterior of the building façade including noise monitoring locations NM1, NM2, NM3, NM4, NM5, NM6, NM7, NM8 and NM9. No façade correction (+3 dB(A) is added according to acoustical principles and EPD guidelines. However, free-field status is performed at NM2a and NM10 and façade correction (+3 dB(A) has added according to the requirement.

5.2.2 Summary of noise monitoring results during the Reporting Period are tabulated in Table 5-1. The relevant graphical plots throughout the Reporting Period are presented in Appendix F.

Table 5-1 Summary of Construction Noise Monitoring Results

Monitoring Location	Leq, 30min (dB((A))
	Max	Min
NM1	62	51
Record Date	27-Feb-18	28-Mar-18
NM2a^(*^)	72	64
Record Date	27-Feb-18. 22-Mar-2018	15-Feb-18
NM3	65	54
Record Date	8-Feb-18	10-Apr-18
NM4	65	59
Record Date	2& 8-Feb-18 9&15- Mar-18	20-Feb-18
NM5	58	51
Record Date	15-Mar-18	20-Feb-18 26-Mar-18
NM6	61	57
Record Date	15&20-Mar-18	9&29-Mar-18 10-Apr-18
NM7	66	57
Record Date	2-Feb-18 4-Apr-18	20-Feb-18 10-Apr-18
NM8	66	56
Record Date	3-Apr-18	22-Mar-18
NM9	66	57
Record Date	3-Apr-18	27-Feb-18 20&26-Apr-18
NM10^(*^)	69	57
Record Date	5-Mar-18	27-Feb-18

⁽*⁾ façade correction (+3 dB(A) is added according to acoustical principles and EPD guidelines

5.2.3 Breaches of construction noise A/L levels and statistical analysis of compliance for construction noise monitoring results are summarized in Table 5-2.

Table 5-2 Summaries of Breaches of Construction Noise A/L Levels

Station	Limit Level	Action Level	Received Date
NM1	0	0	N/A
NM2a	0
NM3	0
NM4	0
NM5	0
NM6	0
NM7	0
NM8	0
NM9	0
NM10	0

5.2.4 In this Reporting Period, the noise level measured at all designated monitoring locations were below 75dB(A). No Action level and Limit Level exceedance was triggered and no corrective action was required.

6 Water Quality Monitoring

6.1 General

6.1.1 In the Reporting Period, construction works under the project has been commenced in Contracts 2, 3, 4, 6, 7 and Contract SS C505 and water quality monitoring was performed at all designated locations.

6.2 Summary of Monitoring Results

6.2.1 Summary of monitoring results during the Reporting Period are tabulated in Tables 6-1 and 6-4. The relevant graphical plots throughout the Reporting Period are presented in Appendix F.

6.2.2 In accordance with ¡§Event and Action Plan¡¨, the water quality monitoring frequency shall be increased to daily when exceedance recorded at the exceeded monitoring location. In the Reporting Period, thirty-seven (37) sampling days was scheduled to carry out for Locations WM1 and WM2A(a) while thirty-eight (38) sampling days for Locations WM3x and WM4 with their control stations.. Moreover, 2 days of extra water sampling were conducted for WM2A(a), WM3 and WM4 and all its control station.

Table 6-1 Summary of the Water Quality Monitoring Results ¡V Contracts SS C505 and 6

Statistics	DO (mg/L)		Turbidity (NTU)		SS (mg/L)
	WM1	WM1- Control	WM1	WM1- Control	WM1	WM1- Control
Min	4.2	6.6	4.3	5.9	< 2.0	< 2.0
Max	14.3	17.3	47.1	297.5	25.5	181.0
Average	7.0	10.3	14.9	24.9	11.6	20.0

Table 6-2 Summary of the Water Quality Monitoring Results ¡V Contracts 2 & 3

Statistics	DO (mg/L)			Turbidity (NTU)			SS (mg/L)
	WM4	WM4 - CA	WM4 - CB	WM4	WM4 - CA	WM4 - CB	WM4	WM4 - CA	WM4 - CB
Min	4.6	4.8	3.1	4.1	1.1	4.7	4.0	< 2.0	2.5
Max	11.1	13.3	10.1	104.0	17.4	16.8	103.5	25.0	27.0
Average	6.3	7.6	5.7	17.0	4.6	8.3	19.0	5.5	8.9

Table 6-3 Summary of the Water Quality Monitoring Results ¡V Contract 6

Statistics

DO (mg/L)

Turbidity (NTU)

SS (mg/L)

WM2A(a)

WM2A-C

WM2B

WM2B-C

WM2A(a)

WM2A-C

WM2B

WM2B-C

WM2A(a)

WM2A-C

WM2B

WM2B-C

Min

6.0

5.0

*

*

4.6

8.8

*

*

< 2.0

3

*

*

Max

15.5

15.5

*

*

528.0

79.9

*

*

217.5

55.0

*

*

Average

8.1

7.6

*

*

29.7

24.2

*

*

18.9

12.5

*

*

Remark: (*) Since 10 Apr 2017, water sampling was unable to carry out at WM2B and WM2B-C due to shallow water (water depth under 150mm)

Table 6-4 Summary of the Water Quality Monitoring Results ¡V Contracts 2 & 6

Statistics	DO (mg/L)		Turbidity (NTU)		SS (mg/L)
	WM3	WM3- Control	WM3	WM3- Control	WM3	WM3- Control
Min	5.5	5.8	3.9	1.6	< 2.0	< 2.0
Max	14.9	18.5	119.0	62.1	185.0	134.0
Average	7.7	8.2	12.3	9.4	14.5	14.3

6.2.3 Breaches of water quality A/L levels and statistical analysis of compliance for the water quality monitoring results are summarized in Tables 6-5.

Table 6-5 Summaries of Breaches of the Existing Water Quality A/L Levels

Reporting Period	No. of sampling day	Location	DO (mg/L)		Turbidity (NTU)		SS (mg/L)
			Action	Limit	Action	Limit	Action	Limit
Feb-18	10	WM1	0	0	0	0	0	0
	12	WM2A(a)	0	0	0	2	0	2
	0	WM2B	0	0	0	0	0	0
	11	WM3x	0	0	0	0	0	0
	11	WM4	0	0	0	0	0	0
Mar-18	14	WM1	0	0	0	0	0	0
	14	WM2A(a)	0	0	0	0	0	0
	0	WM2B	0	0	0	0	0	0
	16	WM3x	0	0	0	2	0	2
	14	WM4	0	0	0	0	0	0
Apr-18	13	WM1	0	0	0	0	0	0
	13	WM2A(a)	0	0	0	0	0	0
	0	WM2B	0	0	0	0	0	0
	13	WM3x	0	0	0	0	0	0
	15	WM4	0	0	0	2	0	1
Total	37	WM1	0	0	0	0	0	0
	39	WM2A(a)	0	0	0	2	0	2
	37	WM2B	0	0	0	0	0	0
	40	WM3x	0	0	0	2	0	2
	40	WM4	0	0	0	2	0	1
Sum			0	0	0	6	0	5

6.2.4 In the Reporting Period, a total of 11 Limit Level (LL) exceedances, namely 6 LL exceedance of turbidity and 5 LL exceedances of Suspended Solids were recorded. NOEs were issued to relevant parties upon confirmation of the results.

6.2.5 Investigation reports for the exceedance were conducted by the ET and the investigation results revealed that all exceedances were not related to the works under the project. The detailed investigation reports are summarized in Table 6-6 and presented in the relevant monthly EM&A reports.

Table 6-6 Summary of Water Quality Exceedance in the Reporting Period

Date of Exceedance	Location	Exceeded Parameter	Cause of Water Quality Exceedance In Brief
2 Feb 2018	WM2A(a)	NTU & SS	According to the weather information from the Observatory, there was heavy rainstorm on 31 January 2018. The water quality throughout the river course was highly affected by the stirred up sediment and muddy runoff from the surrounding environment even outside the construction site. According to the site photos on 31 January 2018, muddy water was observed throughout the river course including control station. In our investigation, the Contractor had implemented water quality mitigation measures such as providing temporary bund and tarpaulin sheet align the river course, there were no adverse water quality impact observed during the site inspection. Since the existing river water was found turbid even without adverse water impact of the site and muddy water was also observed at upstream, it is considered that the exceedances were related to the residual impact of rainstorm.
20 Feb 2018	WM2A(a)	NTU & SS	In our investigation, the Contractor had implemented water quality mitigation measures such as providing temporary bund and tarpaulin sheet align the river course, there were no adverse water quality impact observed during the site inspection. Since there were no construction activities on 16 to 20 February 2018 and no rainfall record during that period, wastewater and muddy runoff was generated from the construction site was not anticipated. It is considered that the exceedances were not related the works under the Contract
1 and 3 March 2018	WM3x	NTU & SS	Upon detection of the exceedances, inspection was carried out at the channel adjacent to related site areas of Contract 2 and Contract 6, no deteriorated water quality was observed from both Sites. Moreover, weekly site inspection revealed that both Contractors had properly implemented water quality mitigation measures and no adverse water quality impact was recorded. It is considered that the exceedances were related to other source of turbid water, possibly from storm water of Sha Tau Kok Road or adjacent villages and not caused by the works under the Project.
16 and 17 April 2018	WM4	NTU & SS	On 16 April 2018, the Contractor reported that unknown source of muddy water attributed to site area and the muddy water was finally entered Ma Wat River. On 17 April 2018, inflow of turbid water to Ma Wat River was observed and the source of unknown turbid water was out of the site boundary. In our investigation, no adverse water quality impact was observed during the site inspection for both sites of Contracts 2 and 3. It was considered that the exceedances on 16 and 17 April 2018 were related to unknown source of muddy water outside the site boundary and unlikely caused by the works under the project.

7 Ecology Monitoring

7.1 General

7.1.1 Ecology monitoring for woodland compensation was shall be conducted at bi-monthly interval for the first year and the monitoring frequency would be reduced to quarterly from the second year.

7.1.2 Ecological monitoring for woodland compensation for period of December 2017 to February 2018 was carried out on 8 and 22 January 2018 by transects inspection and quadrat monitoring. The Quarterly Ecological Monitoring Report (Dec 2017 - Feb 2018) was submitted to EPD in March 2018 in standalone copy as supplementary of the EM&A Report.

7.1.3 Moreover, ecological monitoring for woodland compensation for period of March to May 2018 was carried out on 19 and 20 March 2018 by transects inspection and quadrat monitoring. The Quarterly Ecological Monitoring Report (March to May 2018) was submitted to EPD in June 2018 in standalone copy as supplementary of the EM&A Report.

8 Waste Management

8.1 General Waste Management

8.1.1 Waste management was carried out by an on-site Environmental Officer or an Environmental Supervisor from time to time.

8.2 Records of Waste Quantities

8.2.1 All types of waste arising from the construction work are classified into the following:

l Construction & Demolition (C&D) Material;

l Chemical Waste;

l General Refuse

l Excavated Soil.

8.2.2 Whenever possible, materials were reused on-site as far as practicable. The quantities of waste for disposal in the Reporting Period are summarized in Tables 8-1 and 8-2 and the Waste Flow Table is presented in Appendix H.

Table 8-1 Summary of Quantities of Inert C&D Materials

Type of Waste	Contract No	Quantity				Disposal Location
		Feb 2018	Mar 2018	Apr 2018	Total
C&D Materials (Inert) (in '000m^3)	2	33.2700	39.6460	55.5979	167.8309	-
	3	2.697	1.524	2.880
	4	0	0	0		-
	6	2.740	3.269	2.901		-
	7	0	0.005	1.1
	SS C505	7.243	11.241	3.717		-
Reused in this Project (Inert) (in '000m^3)	2	0	0	0	5.835	-
	3	0.150	0.120	0.36		-
	4	0	0	0		-
	6	0.867	1.581	1.955		-
	7	0	0	0
	SS C505	0.320	0.225	0.257		-
Reused in other Projects (Inert) (in '000m^3)	2	3.6700	3.346	3.368	12.152	Recycling facility as approved alternative site
	3	0	0	0
	4	0	0	0
	6	0.544	0.969	0.255		NENT
	7	0	0	0
	SS C505	0	0	0
Disposal as Public Fill (Inert) (in '000m^3)	2	29.6	36.3	52.2299	145.8019	Tuen Mun 38 TKO 137
	3	2.292	1.263	1.734
	4	0	0	0
	6	1.329	0.719	0.691
	7	0	0.005	1.1
	SS C505	6.351	10.186	2.002

Remark:

(#)The C&D materials were delivered to NENT for reuse by laying cover of the landfilling area.

Table 8-2 Summary of Quantities of C&D Wastes

Type of Waste	Contract No	Quantity				Disposal Location
		Feb 2018	Mar 2018	Apr 2018	Total
Recycled Metal (¡¥000kg) #	2	32	36	33.78	1266.49	By licensed collector
	3	0	0	0
	4	0	0	0
	6	0	0	0
	7	9	6	6.6
	SS C505	720.12	220.86	202.13
Recycled Paper / Cardboard Packing (¡¥000kg) #	2	0.25	0.305	0.324	3.401	By licensed collector
	3	0	0	0
	4	0	0	0
	6	0.402	0.38	0.36
	7	0.18	0.15	0.22
	SS C505	0	0.83	0
Recycled Plastic (¡¥000kg) #	2	2.4	2.7	2.5	7.608	By licensed collector
	3	0	0	0
	4	0	0	0
	6	0	0	0
	7	0.001	0.001	0.001
	SS C505	0	0.005	0
Chemical Wastes (¡¥000kg) *	2	1.95	9.856	0	11.806	By licensed collector
	3	0	0	0
	4	0	0	0
	6	0	0	0
	7	0	0	0
	SS C505	0	0	0
General Refuses (¡¥000m^3)	2	0.285	0.629	0.5748	12.0518	NENT
	3	0.095	0.085	0.125
	4	0	0	0
	6	0.578	0.725	0.921
	7	0.13	0.2	0.3
	SS C505	2.223	2.711	2.47

Remark:

(#) Unit of recycled metal, recycled paper/ cardboard packing and recycled plastic for Contractor 3 was in (¡¥000m³).

(*) Unit of chemical waste for Contractor 3 was in m3.

8.2.3 To control the site performance on waste management, the Contractor shall ensure that all solid and liquid waste management works are fully in compliance with the relevant license/permit requirements, such as the effluent discharge license and the chemical waste producer registration. The Contractor is also reminded to implement the recommended environmental mitigation measures according to the Environmental Monitoring and Audit Manual.

9 Site Inspections

9.1 requirements

9.1.1 According to the approved EM&A Manual, the environmental site inspection shall be formulation by ET Leader. Weekly environmental site inspections should carry out to confirm the environmental performance.

Contract 2

9.1.2 During the Reporting Period, 13 events of the joint site inspections were undertaken at Contract 2 to evaluate the site environmental performance. The summaries of the findings during site inspection are presented in Table 9-1 and the details of site inspection can be found in relevant EM&A monthly report.

Table 9-1 Summary of Reminders/Observations of Site Inspection ¡V Contract 2

Reporting Period	Date of site inspection	Nos. of findings / reminders	Follow-Up Status
February 2018	2,9,15 and 23 February 2018	7	Completed
March 2018	1,9,16,23 and 28 March 2018	10	Completed
April 2018	6,13.20 and 27 April 2018	2	Completed

9.1.3 In the Reporting Period, no non-compliance was recorded; however, 19 observations/ reminders were recorded during the site inspections. Minor deficiencies found in the weekly site inspection were in general rectified within the specified deadlines. The environmental performance of the Project was therefore considered satisfactory.

Contract 3

9.1.4 During the Reporting Period, 13 events of the joint site inspections were undertaken at Contract 3 to evaluate the site environmental performance. The summaries of the findings during site inspection are presented in Table 9-2 and the details of site inspection can be found in relevant EM&A monthly report.

Table 9-2 Summary of Reminders/Observations of Site Inspection ¡V Contract 3

Reporting Period	Date of site inspection	Nos. of findings / reminders	Follow-Up Status
February 2018	1, 8, 14 and 22 February 2018	3	Completed
March 2018	1, 8, 15, 21 and 29 March 2018	5	Completed
April 2018	4,12,18 and 26 April 2018	2	Completed

9.1.5 In the Reporting Period, no non-compliance was recorded; however, 10 observations/ reminders were recorded during the site inspections. Minor deficiencies found in the weekly site inspection were in general rectified within the specified deadlines. The environmental performance of the Project was therefore considered satisfactory.

Contract 4

9.1.6 During the Reporting Period, 13 events of the joint site inspections were undertaken at Contract 4 to evaluate the site environmental performance. The summaries of the findings during site inspection are presented in Table 9-3 and the details of site inspection can be found in relevant EM&A monthly report.

Table 9-3 Summary of Reminders/Observations of Site Inspection ¡V Contract 4

Reporting Period	Date of site inspection	Nos. of findings / reminders	Follow-Up Status
February 2018	2, 9, 12 and 22 February 2018	0	Completed
March 2018	2, 9, 16, 19 and 28 March 2018	0	Completed
April 2018	6, 13, 16 and 27 April 2018	0	Completed

9.1.7 In the Reporting Period, no non-compliance was recorded; however, no observations/ reminders was recorded during the site inspections. The environmental performance of the Project was therefore considered satisfactory.

Contract 6

9.1.8 During the Reporting Period, 13 events of the joint site inspections were undertaken at Contract 6 to evaluate the site environmental performance. The summaries of the findings during site inspection are presented in Table 9-4 and the details of site inspection can be found in relevant EM&A monthly report.

Table 9-4 Summary of Reminders/Observations of Site Inspection ¡V Contract 6

Reporting Period	Date of site inspection	Nos. of findings / reminders	Follow-Up Status
February 2018	1, 8, 14 and 23 February 2018	4	Completed
March 2018	2, 8, 15, 22 and 29 March 2018	5	Completed
April 2018	4, 12, 19 and 26 April 2018	2	Completed

9.1.9 In the Reporting Period, no non-compliance was recorded; however, 11 observations/ reminders were recorded during the site inspections. Minor deficiencies found in the weekly site inspection were in general rectified within the specified deadlines. The environmental performance of the Project was therefore considered satisfactory.

Contract SS C505

9.1.10 During the Reporting Period, 12 events of the joint site inspections were undertaken at Contract SS C505 to evaluate the site environmental performance. The summaries of the findings during site inspection are presented in Table 9-5 and the details of site inspection can be found in relevant EM&A monthly report.

Table 9-5 Summary of Reminders/Observations of Site Inspection ¡V Contract SS C505

Reporting Period	Date of site inspection	Nos. of findings / reminders	Follow-Up Status
February 2018	7, 14, 21 and 28 February 2018	7	Completed
March 2018	7, 14, 21 and 28 March 2018	3	Completed
April 2018	4, 11, 18 and 25 April 2018	4	Completed

9.1.11 In the Reporting Period, no non-compliance was recorded; however, 14 observations/ reminders were recorded during the site inspections. Minor deficiencies found in the weekly site inspection were in general rectified within the specified deadlines. The environmental performance of the Project was therefore considered satisfactory.

Contract 7

9.1.12 During the Reporting Period, 13 events of the joint site inspections were undertaken at Contract SS C505 to evaluate the site environmental performance. The summaries of the findings during site inspection are presented in Table 9-6 and the details of site inspection can be found in relevant EM&A monthly report.

Table 9-6 Summary of Reminders/Observations of Site Inspection ¡V Contract 7

Reporting Period	Date of site inspection	Nos. of findings / reminders	Follow-Up Status
February 2018	2, 9, 13 and 22 February 2018	6	Completed
March 2018	2, 9, 16, 22 and 28 March 2018	8	Completed
April 2018	6, 13, 17 and 27 April 2018	4	Completed

9.1.13 In the Reporting Period, no non-compliance was recorded; however, 18 observations/ reminder were recorded during the site inspections. Minor deficiencies found in the weekly site inspection were in general rectified within the specified deadlines. The environmental performance of the Project was therefore considered satisfactory.

Other Contracts

9.1.14 Since the construction work of Contract 5 has substantially completed, no site inspection was performed.

10 Non-compliance, Complaints, Notifications of Summons and Prosecutions

10.1 Status of Non-compliance Environmental Complaint, Summons and Prosecution

10.1.1 In the Reporting Period, no summons and prosecution under the EM&A Programme was lodged for all Contracts. However, four (4) documented environmental complaints were received by under the EM&A Programme and the details are summary below. The status of the investigation report and finding and listed below.

Date of complaint	Complaint Detail	Investigation Status
28 February 2018	A public complaint was received from Project Hotline regarding the cleanliness of Sha Tau Kok (STK) Road ¡V Ma Mei Ha Section (Dust and Water Quality)	Investigation was carried out for related Contract 2 and Contract 6 accordingly. The IR revealed that the Contractors have been well maintained the wheel washing facilities and no dust and soil carrying by site vehicles to STK road were observed. The complaint was suspected to be caused by frequent use of dump truck transporting loose material to NENT and the majority of dump truck was not belong to LT/HYW project.
4 March 2018	A public complaint was received via 1823 regarding the cleanliness of Lin Ma Hang Road. (Dust and Water Quality)	Investigation was carried out for related Contract 6, Contract 7 and Contract SS C505 accordingly. The IR revealed that the conditions of all site exits under the project were well maintained without mud and debris and no excessive water spraying and slurry was found on LMH road. However, a deficiency at Gate 1 under Contract 6 was observed and rectified immediately without affecting the public. Since there were many other heavy vehicles apart from the project using LMH Road and certain number of unknown exit sites without proper management along LMH Road, it is considered that the complaint was not related to the works under the Project
13 April 2018	EPD had received a complaint regarding foams in water discharged from the North Portal Site of Contract 2.	As advised the Contractor, the incident was caused by the damage on the transfer pipe during the filling of Polyfoamer from another intermediate bulk container (IBC) tank, resulting in spattering out the Polyfoamer. The operator immediately turned off the chemical transfer pump to minimize the spillage, however, some Polyfoamer had already entered into the TBM dewatering system and eventually reached the wastewater treatment facilities. To avoid reoccurrence of the incident, DHK has set up precautionary measures. In our investigation, it is considered that the incident and complaint was an isolated case in which remedial action was taken immediately. Furthermore, DHK advised that TBM breakthrough was finished on 27 April 2018 and no more Polyfoamer and de-foaming agent would be used for the remaining period of the contract work.
29 April 2018	A public complaint was received from ASD regarding the muddy water flowing from the construction site of Contact SS 505.	Inspection was conducted by ET for the complaint investigation. It was observed that mitigation measures were implemented to prevent outflow of muddy water to other Contract and public area. Moreover, the boundary of BCP is surrounded by chain link fencing with concrete foot to prevent site runoff overflowing from the site. It is considered that the complaint was not related to the works under Contract SS C505.

10.1.2 The statistical summary table of environmental complaint, summons and prosecution are presented in Tables 10-1, 10-2 and 10-3.

Table 10-1 Statistical Summary of Environmental Complaints

Contract No	Reporting Period	Environmental Complaint Statistics
		Frequency	Cumulative since commencement of project	Complaint Nature	Project related complaint
2	Feb 2018	0	35	Ÿ (19)Water Quality Ÿ (8) Dust Ÿ (5) Noise Ÿ (1) dust & noise Ÿ (1) waste management Ÿ (1) Water quality and dust	(6) water quality (2) dust (1) noise
	Mar 2018	1
	Apr 2018	1
3	Feb 2018	0	6	Ÿ (2) Dust Ÿ (3) Water quality Ÿ (1) Noise	0
	Mar 2018	0
	Apr 2018	0
4	Feb 2018	0	0	NA	NA
	Mar 2018	0
	Apr 2018	0
6	Feb 2018	0	38	Ÿ (23) Water Quality Ÿ (8) Dust Ÿ (3) Noise Ÿ (1) Nuisance Ÿ (1) Noise and dust Ÿ (2) Water quality and dust t	(7) water quality (3) dust (1) Nuisance (1) Water quality and dust
	Mar 2018	2
	Apr 2018	0
7	Feb 2018	0	3	Ÿ (1) Noise Ÿ (2) Water quality and dust	(1) Water quality and dust
	Mar 2018	1
	Apr 2018	0
SS C505	Feb 2018	0	5	Ÿ (1) Noise Ÿ (1) dust Ÿ (2) Water quality and dust Ÿ (1) Water quality	(1) Water quality and dust
	Mar 2018	1
	Apr 2018	1

Table 10-2 Statistical Summary of Environmental Summons

Contract No	Reporting Period	Environmental Summons Statistics
		Frequency	Cumulative since commencement of project	Complaint Nature
2	Feb 2018	0	1	contravening the Water Pollution Control (General) Regulations
	Mar 2018	0
	Apr 2018	0
3	Feb 2018	0	0	NA
	Mar 2018	0
	Apr 2018	0
4	Feb 2018	0	0	NA
	Mar 2018	0
	Apr 2018	0
6	Feb 2018	0	0	NA
	Mar 2018	0
	Apr 2018	0
7	Feb 2018	0	0	NA
	Mar 2018	0
	Apr 2018	0
SS C505	Feb 2018	0	0	NA
	Mar 2018	0
	Apr 2018	0

Table 10-3 Statistical Summary of Environmental Prosecution

Contract No	Reporting Period	Environmental Prosecution Statistics
		Frequency	Cumulative since commencement of project	Complaint Nature
2	Feb 2018	0	1	contravening the Water Pollution Control (General) Regulations
	Mar 2018	0
	Apr 2018	0
3	Feb 2018	0	0	NA
	Mar 2018	0
	Apr 2018	0
4	Feb 2018	0	0	NA
	Mar 2018	0
	Apr 2018	0
6	Feb 2018	0	0	NA
	Mar 2018	0
	Apr 2018	0
7	Feb 2018	0	0	NA
	Mar 2018	0
	Apr 2018	0
SS C505	Feb 2018	0	0	NA
	Mar 2018	0
	Apr 2018	0

10.1.3 Since the construction works at the Contract 5 was substantially completed, no environmental complaint, summons and prosecution under the EM&A Programme are registered.

11 Implementation Status of Mitigation Measures

11.1 General Requirements

11.1.1 The environmental mitigation measures that recommended in the Implementation Schedule for Environmental Mitigation Measures (ISEMM) in the approved EM&A Manual covered the issues of dust, noise, water and waste and they are summarized presented in Appendix I.

11.1.2 All contracts under the Project shall be implementing the required environmental mitigation measures according to the approved EM&A Manual as subject to the site condition. Environmental mitigation measures generally implemented by Contracts 2, 3, 5, 6 and SS C505 in this Reporting Period are summarized in Table 11-1.

Table 11-1 Environmental Mitigation Measures

Issues	Environmental Mitigation Measures
Water Quality	¡P Wastewater to be treated by the filtration systems i.e. sedimentation tank or AquaSed before to discharge.
Air Quality	¡P Maintain damp / wet surface on access road ¡P Low vehicular speed within the works areas. ¡P All vehicles must use wheel washing facility before off site ¡P Sprayed water during breaking works ¡P A cleaning truck was regularly performed on the public road to prevent fugitive dust emission
Noise	¡P Restrain operation time of plants from 07:00 to 19:00 on any working day except for Public Holiday and Sunday. ¡P Keep good maintenance of plants ¡P Place noisy plants away from residence or school ¡P Provide noise barriers or hoarding to enclose the noisy plants or works ¡P Shut down the plants when not in used.
Waste and Chemical Management	¡P On-site sorting prior to disposal ¡P Follow requirements and procedures of the ¡§Trip-ticket System¡¨ ¡P Predict required quantity of concrete accurately ¡P Collect the unused fresh concrete at designated locations in the sites for subsequent disposal
General	¡P The site was generally kept tidy and clean.

12 Conclusions and Recommendations

12.1 Conclusions

12.1.1 This is the 19^th Quarterly EM&A Summary Report presenting the monitoring results and inspection findings for the Reporting Period from 1 February to 30 April 2018.

12.1.2 For air quality monitoring, no 1-hour TSP monitoring results triggered the Action or Limit Levels. For 24-hour TSP, there was 1 Limit Level exceedance recorded and Notification of Exceedances (NOEs) was issued to relevant parties upon confirmation of the result. Investigation for the cause for the exceedance was completed by ET which concluded that the exceedance was related to the external source of dust emission and not caused by the works under the Project.

12.1.3 In the Reporting Period, no construction noise exceedances were recorded and no complaints (which triggered the Action Level exceedance) were received.

12.1.4 For water quality monitoring, a total of 11 Limit Level, namely 6 LL exceedance of turbidity and 5 AL/LL exceedances of Suspended Solids were recorded for the Project. Investigation reports revealed that the Contractor had properly implemented water quality mitigation measures such as well-maintained the wastewater treatment facility and covered the expose area with impervious sheet. It was concluded that all the exceedances were not related to the works under the Project

12.1.5 In this Reporting Period, Quarterly Ecological Monitoring Report for woodland compensation (Dec 2017 to Feb 2018) was submitted to EPD in March 2018. In addition, ecological monitoring for woodland compensation for period of March to May 2018 was carried out on 19 and 20 March 2018 and the corresponding Quarterly Ecological Monitoring Report was submitted to EPD in June 2018.

12.1.6 In this Reporting Period, four (4) documented environmental complaint was received regarding the air quality and noise issues under the EM&A Programme. The Investigation Reports for the complaints were completed by ET without further comments from IEC.

12.1.7 No environmental summons or successful prosecutions were recorded in the Reporting Period.

12.1.8 During the Reporting Period, weekly joint site inspection by the RE, IEC, ET with the relevant Main-contractor were carried out for Contracts 2, 3, 4, 6 and 7 in accordance with the EM&A Manual stipulation. For Contract SS C505, weekly joint site inspection was carried out by the RE, IEC, ET and main-contractor whereas IEC performed monthly site inspection. No non-compliance observed during the site inspection.

12.2 Recommendations

12.2.1 During rainy season, preventive measures for muddy water or other water pollutants from site surface flow to local stream such as Kong Yiu Channel, Ma Wat Channel, Ping Yuen River, Kwan Tei River or public area should be properly maintained. The Contractors should paid special attention on water quality mitigation measures and fully implement according ISEMM of the EM&A Manual, in particular for working areas near Ma Wat Channel and Ping Yuen River.

12.2.2 In addition, all effluent discharge shall be ensure to fulfill Technical Memorandum of Effluent Discharged into Drainage and Sewerage Systems, inland and Coastal Waters criteria or discharge permits stipulation.

12.2.3 Construction noise would be a key environmental issue during construction work of the Project. Noise mitigation measures such as using quiet plants should be implemented in accordance with the EM&A requirement.

12.2.4 Since most of construction sites under the Project are located adjacent to villages, the Contractors should fully implement air quality mitigation measures to reduce construction dust emission.

12.2.5 Furthermore, daily cleaning and weekly tidiness shall be properly performed and maintained. In addition, mosquito control should be kept to prevent mosquito breeding on site.