Job No.: TCS00694/13

Agreement No. CE 45/2008 (CE)

Liantang/Heung Yuen Wai

Boundary Control Point and Associated Works

Monthly Environmental Monitoring and Audit Report (No.57) ¡V April 2018

Prepared For

Civil Engineering and Development Department (CEDD)

Date	Reference No.	Prepared By	Certified By
14 May 2018	TCS00694/13/600/R1546v2
		Nicola Hon (Environmental Consultant)	Tam Tak Wing (Environmental Team Leader)

Version	Date	Remarks
1	10 May 2018	First Submission
2	14 May 2018	Amended according to the IEC¡¦s comments on 10 May 2018

executive summary

ES01 This is the 57^th monthly EM&A report presenting the monitoring results and inspection findings for the reporting period from 1 to 30 April 2018 (hereinafter ¡¥the Reporting Period¡¦).

Environmental Monitoring and Audit Activities

ES02 To facilitate the project management and implementation, Liantang/Heung Yuen Wai Boundary Control Point and Associated Works of the Project is divided to seven CEDD contracts including Contract 2 (CV/2012/08), Contract 3 (CV/2012/09), Contract 4 (NE/2014/02), Contract 5 (CV/2013/03), Contract 6 (CV/2013/08) and Contract 7 (NE/2014/03) and an ArshSD contract (Contract SS C505).

ES03 In the Reporting Period, the major construction works under Liantang/Heung Yuen Wai Boundary Control Point and Associated Works of the Project included Contract 2, Contract 3, Contract 4, 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	Environmental Monitoring Parameters / Inspection	Reporting Period
		Number of Monitoring Locations to undertake	Total Occasions
Air Quality	1-hour TSP	9	135
	24-hour TSP	9	44 (^)
Construction Noise	Leq(30min) Daytime	10	40
Water Quality	Water in-situ measurement and/or sampling	WM1 & WM1-C	13 Scheduled & 0 extra
		WM2A(a) & WM2A-Cx	13 Scheduled & 0 extra
		WM2B & WM2B-C	13 Scheduled & 0 extra (*)
		WM3x &WM3-C	13 Scheduled & 0 extra
		WM4, WM4-CA &WM4-CB	13 Scheduled & 2 extra
Ecology	Woodland compensation i) General Health condition of planted species ii) Survival of planted species	9 Quadrats and transect	0
Joint Site Inspection / Audit	IEC, ET, the Contractor and RE joint site Environmental Inspection and Auditing	Contract 2	4
		Contract 3	4
		Contract 4	4
		Contract 6	4
		Contract 7	4
		Contract SS C505 (#)	4

Remark:

(#) IEC only joined one (1) event of site inspection for Contract SS C505.

(*) In 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.

Action and Limit (A/L) Levels exceedance

ES04 In the Reporting Period, no air quality and construction noise exceedance and valid noise complaint was recorded. For water quality monitoring, a total of three (3) Action/Limit Level exceedances were recorded under the Project. The summary of exceedance in the Reporting Period is shown below.

Environmental Aspect	Monitoring Parameters	Action Level	Limit Level	Event & Action
				NOE Issued	Investigation Result	Project related exceedance	Corrective Actions
Air Quality	1-hour TSP	0	0	0	--	--	--
	24-hour TSP	0	0	0	--	--	--
Construction Noise	Leq(30min) Daytime	0	0	0	--	--	--
Water Quality	DO	0	0	0	-	--	--
	Turbidity	0	2	2	- All exceedances were not project related.	0	The Contractor should fully implement water quality mitigation measure.
	SS	0	1	1		0

ES05 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

ES06 In this Reporting Period, two (2) documented environmental complaints were received under the EM&A programme regarding to the water quality issue. The investigation report for the complaint for Contract 2 regarding the foamy discharge was under reviewed by IEC while the other complaint for Contract SS C505 is underway by ET.

Notification of Summons and Successful Prosecutions

ES07 No environmental summons and prosecutions were recorded in the Reporting Period.

Reporting Change

ES08 No reporting changes were made in the Reporting Period.

Site Inspection

ES09 In this Reporting Period, joint site inspection to evaluate the site environmental performance at Contract 2 has been carried out by the RE, IEC, ET and the Contractor on 6, 13, 20 and 27 April 2018. No non-compliance was noted during the site inspection.

ES10 In the Reporting Period, joint site inspection to evaluate the site environmental performance at Contract 3 has been carried out by the RE, IEC, ET and the Contractor on 4, 12, 18 and 26 April 2018. No non-compliance was noted during the site inspection.

ES11 In the Reporting Period, joint site inspection to evaluate the site environmental performance at Contract 4 has been carried out by the RE, IEC, ET and the Contractor on 6, 13, 16 and 27 April 2018. No non-compliance was noted.

ES12 In the Reporting Period, joint site inspection to evaluate the site environmental performance at Contract 6 has been carried out by the RE, IEC, ET and the Contractor on 4, 12, 19 and 26 April 2018. No non-compliance was noted during the site inspection.

ES13 In the Reporting Period, joint site inspection for Contract 7 to evaluate the site environmental performance has been carried out by the RE, IEC, ET and the Contractor on 6, 13, 17 and 27 April 2018. No non-compliance was noted during the site inspection.

ES14 In the Reporting Period, joint site inspection to evaluate the site environmental performance at Contract SS C505 has been carried out by the RE, ET and the Contractor on 4, 11, 18 and 25 April 2018 in which IEC joined the site inspection on 25 April 2018. No non-compliance was noted during the site inspection.

Future Key Issues

ES15 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.

ES16 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.

ES17 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.

ES18 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 3

2.1 Construction Contract Packaging 3

2.2 Project Organization 5

2.3 Concurrent Projects 7

2.4 Construction Progress 7

2.5 Summary of Environmental Submissions 9

3 Summary of Impact Monitoring Requirements 14

3.1 General 14

3.2 Monitoring Parameters 14

3.3 Monitoring Locations 14

3.4 Monitoring Frequency and Period 16

3.5 Monitoring Equipment 17

3.6 Monitoring Methodology 19

3.7 Equipment Calibration 21

3.8 Derivation of Action/Limit (A/L) Levels 22

3.9 Data Management and Data QA/QC Control 22

4 Air Quality Monitoring 24

4.1 General 24

4.2 Air Quality Monitoring Results 24

5 Construction Noise Monitoring 27

5.1 General 27

5.2 Noise Monitoring Results 27

6 Water Quality Monitoring 28

6.1 General 28

6.2 Results of Water Quality Monitoring 28

7 Ecology Monitoring 31

7.1 General 31

8 Waste Management 32

8.1 General Waste Management 32

8.2 Records of Waste Quantities 32

9 Site Inspection 33

9.1 requirements 33

9.2 Findings / Deficiencies During the Reporting Month 33

10 Environmental Complaint and Non-Compliance 36

10.1 Environmental Complaint, Summons and Prosecutions 36

11 Implementation Status of Mitigation Measures 39

11.1 General Requirements 39

11.2 Tentative Construction Activities in the Coming Month 39

11.3 Key Issues for the Coming Month 41

12 Conclusions and Recommendations 42

12.1 Conclusions 42

12.2 Recommendations 42

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 24-hour and 1-hour TSP Monitoring Results ¡V AM1a

Table 4-2 Summary of 24-hour and 1-hour TSP Monitoring Results ¡V AM2

Table 4-3 Summary of 24-hour and 1-hour TSP Monitoring Results ¡V AM3

Table 4-4 Summary of 24-hour and 1-hour TSP Monitoring Results ¡V AM4B

Table 4-5 Summary of 24-hour and 1-hour TSP Monitoring Results ¡V AM5a

Table 4-6 Summary of 24-hour and 1-hour TSP Monitoring Results ¡V AM6

Table 4-7 Summary of 24-hour and 1-hour TSP Monitoring Results ¡V AM7a

Table 4-8 Summary of 24-hour and 1-hour TSP Monitoring Results ¡V AM8

Table 4-9 Summary of 24-hour and 1-hour TSP Monitoring Results ¡V AM9b

Table 5-1 Summary of Construction Noise Monitoring Results

Table 5-2 Summary of Construction Noise Monitoring Results

Table 6-1 Summary of Water Quality Monitoring Results for Contract 2 and 3

Table 6-2 Summary of Water Quality Monitoring Results for Contract 6 and SS C505

Table 6-3 Summary of Water Quality Monitoring Results for Contract 6

Table 6-4 Summary of Water Quality Monitoring Results for Contract 2 and 6

Table 6-5 Action and Limit (A/L) Levels Exceedance Recorded

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

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

Table 9-1 Site Observations for Contract 2

Table 9-2 Site Observations for Contract 3

Table 9-3 Site Observations for Contract 4

Table 9-4 Site Observations for Contract 6

Table 9-5 Site Observations for Contract SS C505

Table 9-6 Site Observations for 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 Appendices

Appendix A Layout Plan of the Project

Appendix B Organization Chart

Appendix C 3-month rolling construction program

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

Appendix E Monitoring Locations for Impact Monitoring

Appendix F Calibration Certificate of Monitoring Equipment and HOKLAS-accreditation Certificate of the Testing Laboratory

Appendix G Event and Action Plan

Appendix H Impact Monitoring Schedule

Appendix I Database of Monitoring Result

Appendix J Graphical Plots for Monitoring Result

Appendix K Meteorological Data

Appendix L Waste Flow Table

Appendix M Implementation Schedule for Environmental Mitigation Measures

Appendix N Investigation Report for Exceedance

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/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. As part of the EM&A program, the baseline monitoring has carried out between 13 June 2013 and 12 July 2013 for all parameters including air quality, noise and water quality before construction work commencement. The Baseline Monitoring Report summarized the key findings and the rationale behind determining a set of Action and Limit Levels (A/L Levels) from the baseline data. Also, the Project baseline monitoring report which verified by the IEC has been submitted to EPD on 16 July 2013 for endorsement. The major construction works of the Project was commenced on 16 August 2013 in accordance with the EP Section 5.3 stipulation.

1.1.5 This is 57^th monthly EM&A report presenting the monitoring results and inspection findings for reporting period from 1 to 30 April 2018.

1.2 Report Structure

1.2.1 The Monthly Environmental Monitoring and Audit (EM&A) 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 Inspections

Section 10 Environmental Complaints and Non-Compliance

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 has awarded in mid-April 2016 and construction work was 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 has 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 has awarded in December 2015 and the construction works of Contract 7 was commenced on 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 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 Regulaiton 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. Once the contractors are appointed, EPD, ET and IEC will be notified the details of the contractor.

2.2.8 The Contractor for Contracts under CEDD should report to the ER. For ArchSD Contract, the Contractor should report to the Architect or Architect¡¦s Representative (AR). 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)

2.2.9 Once the ET is appointed, the EPD, CEDD, ER, Architect and IEC will be notified the details of the ET.

2.2.10 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 Architect, the lEC and Contractor 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)

2.2.11 One IEC will be employed for this Project. Once the IEC is appointed, EPD, ER, the Architect and ET will be notified the details of the IEC.

2.2.12 The Independent Environmental Checker (IEC) should not be in any way an associated body of the Contractor 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 appointment of IEC should be subject to the approval of EPD. The IEC should:

¡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 Verify the log-book(s) mentioned in Condition 2.2 of the EP, notify the Director by fax, within one working day of receipt of notification from the ET Leader of each and every occurrence, change of circumstances or non-compliance with the EIA Report and/or the EP, which might affect the monitoring or control of adverse environmental impacts from the Project

¡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, the Architect, ET, lEC and the Contractor 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, 6, 7 and SS C505 and they are summarized in below. Moreover, 3-month rolling construction program for all the current contracts is enclosed in Appendix C.

Contract 2 (CV/2012/08)

2.4.2 The contract commenced in May 2014. In this Reporting Period, construction activities conducted are listed below:

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 North ventilation building structure and internal structure Ÿ Construction of retaining wall and permanent drainage Ÿ Site formation and construction of slip road Ÿ Construction of temporary drainage to prepare for rainy season Construction of temporary utility bridge across the mid-platform
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 permanent drainage and outdoor platform Ÿ Internal fit out and E&M installation. Ÿ Soft landscaping work.

Contract 3 (CV/2012/09)

2.4.3 The Contract commenced in November 2013. In this Reporting Period, construction activities conducted are listed below:

Ÿ Cable Detection and Trial Trenches

Ÿ Remaining Works on New Kiu Tau Footbridge

Ÿ Noise Barrier Construction

Ÿ Road pavement works

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

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

Ÿ Parapet Installation on bridge deck

Ÿ Road Drainage Work

Ÿ Construction of Profile Barrier & Planter Wall on Bridge Deck

Ÿ Stressing of External Tendon

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)

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

Contract 6 (CV/2013/08)

2.4.6 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)

2.4.7 Contract 7 has awarded in December 2015 and construction work was commenced on 15 February 2016. In this Reporting Period, construction activities conducted are listed below:

Ÿ Deck construction at Bridge A

Ÿ Abutment and deck construction at Bridge E

Ÿ Profile barrier construction at Bridges B, D & E

Ÿ Installation of Façade at Bridge C

Ÿ Installation of BMU at roof of Bridge C

Ÿ Drainage and watermains at perimeter road

Contract SS C505

2.4.8 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, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 21, 22, 23, 24, 25, 26, 27, 28, 29, 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 and internal wall 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 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, 11, 14, 18, 36 & 41

Ÿ Elevated Walkway E1, E2, E3 and E4 construction

Ÿ Tower Crane Dismantling Works

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-RN0110-18		22-Mar-2018		21-Sep-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-RN0142-18	Admin Bldg	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-RN0669-17		25 Oct 2017		7 Apr 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		24 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-RW0684-17		30 Oct 2017			29 Apr 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 Summary of Impact Monitoring Requirements

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 D. 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 E.

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
		Easting	Northing
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 upstream 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 (WM3x 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

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

3.4.1 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

3.4.2 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¡¨), additional weekly impact monitoring for L_eq(5min) measurement shall be employed during respective restricted hours periods.. Supplementary information for data auditing, statistical results such as L₁₀ and L₉₀ shall also be obtained for reference.

Water Quality Monitoring

3.4.3 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-Hr 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*

* Instrument was used in the Reporting Period and the calibration certificate could be referred in Appendix F.

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.

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 Quest QC-20* or Rion NC-74*
Portable Wind Speed Indicator	Testo Anemometer

* Instrument was used in the Reporting Period and the calibration certificate could be referred in Appendix F.

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:

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

• a 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 Professional Plus /YSI PRO20 Handheld Dissolved Oxygen Instrument/ YSI 550A Multifunctional Meter*/ YSI Professional DSS
pH meter	YSI Professional Plus / AZ8685 pH pen-style meter*/ YSI 6820/ 650MDS/ YSI Professional DSS
Turbidimeter	Hach 2100Q*/ YSI 6820/ 650MDS/ YSI Professional DSS
Sample Container	High density polythene bottles (provided by laboratory)
Storage Container	¡¥Willow¡¦ 33-liter plastic cool box with Ice pad

* Instrument was used in the Reporting Period and the calibration certificate could be referred in Appendix F.

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 would be 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 will use as the monitoring parameter for the time period between 0700-1900 hours on weekdays; Leq_(5min) measurements would be 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 is performed before and after the noise measurement.

Water Quality

3.6.9 Water quality monitoring is conducted at the designated or alternative locations. The sampling procedures 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 or tape measurement 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 If the water level of a monitoring station is too shallow when sampling, sediment would be disturbed which affecting the accuracy of water quality monitoring. In order to avoid disturbing sediment, depth limits should be set up for the water sampling for the ease of reference. When the measured water depth of the monitoring station (both control and impact stations) is lower than 150mm, water monitoring would not be to perform at that monitoring location. Instead, the monitoring location will be moved to a temporary alternative location monitoring location based on the criteria below:-

(a) the alternative location should be either upstream or downstream of the original location and at the same the river/drain channel

(b) the alternative location should be within 15m far from the original location

(c) 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.

3.6.12 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.

3.6.13 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.

3.6.14 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

3.6.15 YSI PRO20 Handheld Dissolved Oxygen Instrument is used for water in-situ measures, which automates the measurements and data logging of temperature, dissolved oxygen and dissolved oxygen saturation.

3.6.16 A portable AZ Model 8685 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.

3.6.17 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.

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

Laboratory Analysis

3.6.19 All water samples analyzed Suspended Solids (SS) will be carried out by a local HOKLAS-accredited testing laboratory (ALS Technichem (HK) Pty Ltd HOKLAS registration no. 66). SS determination using APHA Standard Methods 2540D as specified in the EM&A Manual will start 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 would be 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 attached in Appendix F.

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) and65 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 G.

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 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 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. Hence, air quality monitoring was performed at all designated locations.

4.1.2 The air quality monitoring schedule is presented in Appendix H and the monitoring results are summarized in the following sub-sections.

4.2 Air Quality Monitoring Results

4.2.1 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. A total of 135 events of 1-hour TSP and 44 events 24-hours TSP monitoring were carried out and the monitoring results are summarized in Tables 4-1 to 4-9. The detailed 24-hour TSP monitoring data are presented in Appendix I and the relevant graphical plots are shown in Appendix J.

Table 4-1 Summary of 24-hour and 1-hour TSP Monitoring Results ¡V AM1b

Date	24-hour TSP (mg/m^3)	1-hour TSP (mg/m^3)
		Date	Start Time	1^st reading	2^nd reading	3^rd reading
4-Apr-18	67	3-Apr-18	9:27	74	79	71
10-Apr-18	86	9-Apr-18	9:22	71	72	69
16-Apr-18	52	14-Apr-18	8:59	69	67	60
21-Apr-18	77	20-Apr-18	9:38	53	58	64
27-Apr-18	#	26-Apr-18	9:04	54	55	58
Average (Range)	71 (52 ¡V 86)	Average (Range)		65 (53 ¡V 79)

Remark: (#) 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.

Table 4-2 Summary of 24-hour and 1-hour TSP Monitoring Results ¡V AM2

Date	24-hour TSP (mg/m^3)	1-hour TSP (mg/m^3)
		Date	Start Time	1^st reading	2^nd reading	3^rd reading
4-Apr-18	139	3-Apr-18	9:33	92	99	90
10-Apr-18	143	9-Apr-18	9:16	69	70	71
16-Apr-18	129	14-Apr-18	9:02	85	83	82
21-Apr-18	116	20-Apr-18	9:33	54	60	64
27-Apr-18	95	26-Apr-18	9:24	58	58	64
Average (Range)	124 (95 ¡V 143)	Average (Range)		73 (54 ¡V 99)

Table 4-3 Summary of 24-hour and 1-hour TSP Monitoring Results ¡V AM3

Date	24-hour TSP (mg/m^3)	1-hour TSP (mg/m^3)
		Date	Start Time	1^st reading	2^nd reading	3^rd reading
4-Apr-18	83	3-Apr-18	9:27	81	86	89
10-Apr-18	134	9-Apr-18	9:07	67	69	72
16-Apr-18	81	14-Apr-18	9:05	76	77	84
21-Apr-18	77	20-Apr-18	9:28	57	59	65
27-Apr-18	54	26-Apr-18	13:12	66	65	66
Average (Range)	86 (54 ¡V 134)	Average (Range)		72 (57 ¡V 89)

Table 4-4 Summary of 24-hour and 1-hour TSP Monitoring Results ¡V AM4b

Date	24-hour TSP (mg/m^3)	1-hour TSP (mg/m^3)
		Date	Start Time	1^st reading	2^nd reading	3^rd reading
5-Apr-18	48	4-Apr-18	9:12	87	87	84
11-Apr-18	77	10-Apr-18	9:27	67	64	69
17-Apr-18	59	16-Apr-18	9:24	62	60	63
23-Apr-18	56	21-Apr-18	9:21	61	62	63
28-Apr-18	66	27-Apr-18	9:51	112	111	120
Average (Range)	61 (48 ¡V 77)	Average (Range)		78 (60 ¡V 120)

Table 4-5 Summary of 24-hour and 1-hour TSP Monitoring Results ¡V AM5a

Date	24-hour TSP (mg/m^3)	1-hour TSP (mg/m^3)
		Date	Start Time	1^st reading	2^nd reading	3^rd reading
5-Apr-18	50	4-Apr-18	9:14	76	74	75
11-Apr-18	104	10-Apr-18	9:18	72	78	74
17-Apr-18	57	16-Apr-18	9:36	50	49	47
23-Apr-18	36	21-Apr-18	9:28	68	66	64
28-Apr-18	75	27-Apr-18	9:41	108	114	113
Average (Range)	64 (36 ¡V 104)	Average (Range)		75 (47 ¡V 114)

Table 4-6 Summary of 24-hour and 1-hour TSP Monitoring Results ¡V AM6

Date	24-hour TSP (mg/m^3)	1-hour TSP (mg/m^3)
		Date	Start Time	1^st reading	2^nd reading	3^rd reading
5-Apr-18	55	4-Apr-18	9:09	76	72	72
11-Apr-18	131	10-Apr-18	9:13	71	65	76
17-Apr-18	107	16-Apr-18	9:43	51	49	53
23-Apr-18	100	21-Apr-18	9:37	73	68	61
28-Apr-18	109	27-Apr-18	13:31	118	126	130
Average (Range)	100 (55 ¡V 131)	Average (Range)		77 (49 ¡V 130)

Table 4-7 Summary of 24-hour and 1-hour TSP Monitoring Results ¡V AM7b

Date	24-hour TSP (mg/m^3)	1-hour TSP (mg/m^3)
		Date	Start Time	1^st reading	2^nd reading	3^rd reading
5-Apr-18	85	4-Apr-18	9:04	82	80	80
11-Apr-18	135	10-Apr-18	9:07	72	74	70
17-Apr-18	110	16-Apr-18	9:52	47	48	50
23-Apr-18	79	21-Apr-18	9:21	61	65	71
28-Apr-18	82	27-Apr-18	9:31	61	64	65
Average (Range)	98 (79 ¡V 135)	Average (Range)		66 (47 ¡V 82)

Table 4-8 Summary of 24-hour and 1-hour TSP Monitoring Results ¡V AM8

Date	24-hour TSP (mg/m^3)	1-hour TSP (mg/m^3)
		Date	Start Time	1^st reading	2^nd reading	3^rd reading
5-Apr-18	36	4-Apr-18	13:00	73	76	71
11-Apr-18	63	10-Apr-18	9:03	64	66	69
17-Apr-18	55	16-Apr-18	10:01	54	53	52
23-Apr-18	39	21-Apr-18	13:07	56	59	62
28-Apr-18	58	27-Apr-18	13:37	69	64	67
Average (Range)	50 (36 ¡V 63)	Average (Range)		64 (52 ¡V 76)

Table 4-9 Summary of 24-hour and 1-hour TSP Monitoring Results ¡V AM9b

Date	24-hour TSP (mg/m^3)	1-hour TSP (mg/m^3)
		Date	Start Time	1^st reading	2^nd reading	3^rd reading
4-Apr-18	84	3-Apr-18	9:31	58	57	64
10-Apr-18	76	9-Apr-18	9:21	63	62	68
16-Apr-18	49	14-Apr-18	9:37	58	59	62
21-Apr-18	60	20-Apr-18	13:01	61	64	65
27-Apr-18	49	26-Apr-18	13:19	70	68	69
Average (Range)	64 (49 ¡V 84)	Average (Range)		63 (57 ¡V 70)

4.2.2 As shown in Tables 4-1 to 4-9, all the 1-hour TSP and 24-hour TSP monitoring results were below the Action/Limit Levels. No Notification of Exceedance (NOE) was issued in this Reporting Period.

4.2.3 The meteorological data during the impact monitoring days are summarized in Appendix K.

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.

5.1.2 The noise monitoring schedule is presented in Appendix H and the monitoring results are summarized in the following sub-sections.

5.2 Noise Monitoring Results

5.2.1 In the Reporting Period, a total of 40 events noise measurements were carried out at the designated locations. The sound level meter was set in 1m from the exterior of the building façade including noise monitoring locations NM1, NM3, NM4, NM5, NM6, NM7, NM8 and NM9. Therefore, no façade correction (+3 dB(A)) is added according to acoustical principles and EPD guidelines. However, free-field status were performed at NM2a and NM10 and façade correction (+3 dB(A)) has added according to the requirement in this month. The noise monitoring results at the designated locations are summarized in Tables 5-1 and 5-2. The detailed noise monitoring data are presented in Appendix I and the relevant graphical plots are shown in Appendix J.

Table 5-1 Summary of Construction Noise Monitoring Results

Construction Noise Level (Leq30min), dB(A)
Date	NM1	NM2a^(*^)	NM8	NM9	NM10^(*^)
3-Apr-18	56	71	66	66	65
9-Apr-18	60	67	58	60	63
20-Apr-18	60	70	59	57	62
26-Apr-18	58	66	59	57	61
Limit Level	75 dB(A)

Remarks

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

Table 5-2 Summary of Construction Noise Monitoring Results

Construction Noise Level (Leq30min), dB(A)
Date	NM3	NM4	NM5	NM6	NM7
4-Apr-18	64	63	53	58	66
10-Apr-18	54	61	53	57	57
16-Apr-18	61	61	52	59	59
27-Apr-18	61	63	53	58	60
Limit Level	75 dB(A)					54

5.2.2 As shown in Tables 5-1 and 5-2, no construction noise measurement results that exceeded the Limit Level were recorded. Moreover, no valid noise complaint (which triggered Action Level exceedance) was recorded in the Reporting Period.

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. The water quality monitoring schedule is presented in Appendix H. The monitoring results are summarized in the following sub-sections.

6.2 Results of Water Quality Monitoring

6.2.1 In the Reporting Period, a total of thirteen (13) sampling days was scheduled to carry out for all designated locations with their control stations. Since exceedances were recorded at WM4, according to ¡§Event and Action Plan¡¨ stipulation, 2 additional water quality monitoring day were conducted for WM4x and its control stations.

6.2.2 The key monitoring parameters including Dissolved Oxygen, Turbidity and Suspended Solids are summarized in Tables 6-1 to 6-5. Breaches of water quality monitoring criteria are shown in Table 6-6. Detailed monitoring database including in-situ measurements and laboratory analysis data are shown in Appendix I and the relevant graphical plot are shown in Appendix J.

Table 6-1 Water Quality Monitoring Results Associated of Contracts 2 and 3

Date	Dissolved Oxygen (mg/L)			Turbidity (NTU)			Suspended Solids (mg/L)
	WM4	WM4-CA	WM4-CB	WM4	WM4-CA	WM4-CB	WM4	WM4-CA	WM4-CB
3-Apr-18	5.5	6.8	5.2	17.4	4.3	9.1	13.5	<2	13.5
5-Apr-18	5.1	6.8	4.9	12.3	5.3	6.0	21.0	4.5	21.0
7-Apr-18	6.3	7.8	4.8	7.8	6.3	16.8	8.5	25.0	8.5
9-Apr-18	5.4	7.1	5.1	13.8	4.5	8.8	13.5	2.5	13.5
11-Apr-18	4.9	6.1	4.4	22.9	2.4	7.0	30.5	<2	30.5
13-Apr-18	4.9	6.1	4.9	30.5	3.4	9.1	30.5	2.0	30.5
16-Apr-18	5.9	5.5	3.4	104.0	17.4	13.9	103.5	9.5	103.5
17-Apr-18	#	#	#	41.6	3.8	13.8	35.0	<2	35.0
18-Apr-18	4.6	5.5	4.3	15.5	7.5	9.7	22.0	9.5	22.0
19-Apr-18	#	#	#	18.9	3.8	6.6	23.0	20.0	23.0
20-Apr-18	4.9	5.7	4.1	17.6	7.2	6.5	23.0	3.0	23.0
23-Apr-18	4.6	5.3	4.5	8.7	3.3	5.5	12.0	<2	12.0
25-Apr-18	4.7	4.8	4.5	19.2	7.0	11.3	21.0	4.0	21.0
28-Apr-18	4.7	6.1	3.1	16.6	10.4	7.5	19.0	5.0	19.0
30-Apr-18	4.8	5.2	4.5	17.6	8.9	6.2	15.0	7.0	15.0

Remarks: bold with underline indicated Limit Level exceedance

(#) Additional water quality monitoring at the exceeded location(s) due to two consecutive monitoring days indicated Limit Level exceedance/

Table 6-2 Water Quality Monitoring Results Associated of Contracts 6 and SS C505

Date	Dissolved Oxygen (mg/L)		Turbidity (NTU)		Suspended Solids (mg/L)
	WM1	WM1-C	WM1	WM1-C	WM1	WM1-C
3-Apr-18	5.2	10.3	10.4	17.8	5.0	9.0
5-Apr-18	5.3	11.2	10.1	15.1	6.0	10.5
7-Apr-18	7.2	8.7	5.1	8.4	<2	<2
9-Apr-18	6.4	10.4	6.7	14.2	5.0	13.0
11-Apr-18	5.6	9.8	4.3	6.9	3.0	4.5
13-Apr-18	5.3	8.4	12.7	22.4	10.0	30.0
16-Apr-18	6.0	7.6	30.6	297.5	23.5	181.0
18-Apr-18	5.7	8.5	14.6	18.4	13.0	14.5
20-Apr-18	4.4	7.4	10.5	25.4	5.0	31.5
23-Apr-18	6.1	6.7	27.9	24.4	25.5	19.5
25-Apr-18	4.2	6.6	9.2	39.8	3.5	53.5
28-Apr-18	4.4	6.9	37.2	51.3	22.0	56.5
30-Apr-18	5.2	10.3	10.4	17.8	5.0	9.0

Table 6-3 Water Quality Monitoring Results Associated only Contract 6

Date	Dissolved Oxygen (mg/L)				Turbidity (NTU)				Suspended Solids (mg/L)
	WM2A(a)	WM2A- Cx	WM2B	WM2B- C	WM2A(a)	WM2A- Cx	WM2B	WM2B- C	WM2A(a)	WM2A- Cx	WM2B	WM2B- C
3-Apr-18	7.9	5.6	*	*	13.9	16.2	*	*	8.5	4.5	*	*
5-Apr-18	7.7	5.5	*	*	15.3	12.4	*	*	14.5	3.0	*	*
7-Apr-18	9.0	7.7	*	*	9.9	17.6	*	*	5.5	7.0	*	*
9-Apr-18	7.7	6.8	*	*	6.8	10.8	*	*	7.0	5.5	*	*
11-Apr-18	7.5	6.0	*	*	6.5	11.7	*	*	6.0	4.5	*	*
13-Apr-18	6.8	5.5	*	*	14.3	14.5	*	*	8.0	5.0	*	*
16-Apr-18	7.8	7.4	*	*	57.8	71.1	*	*	43.5	55.0	*	*
18-Apr-18	7.7	5.9	*	*	14.5	71.4	*	*	17.5	44.5	*	*
20-Apr-18	6.5	5.8	*	*	18.5	12.0	*	*	17.0	14.5	*	*
23-Apr-18	6.5	5.5	*	*	13.5	10.9	*	*	7.5	3.5	*	*
25-Apr-18	6.0	5.0	*	*	24.4	72.3	*	*	20.5	28.0	*	*
28-Apr-18	6.7	5.4	*	*	27.0	30.0	*	*	12.5	10.0	*	*
30-Apr-18	6.2	6.8	*	*	21.4	13.0	*	*	14.5	4.5	*	*

Remarks: * water sampling was unable to carry out at WM2B and WM2B-C due to shallow water (water depth under 150mm

Table 6-4 Water Quality Monitoring Results Associated Contracts 2 and 6

Date	Dissolved Oxygen (mg/L)		Turbidity (NTU)		Suspended Solids (mg/L)
	WM3x	WM3-C	WM3x	WM3-C	WM3x	WM3-C
3-Apr-18	7.1	6.5	21.2	28.1	34.5	52.0
5-Apr-18	7.3	6.9	4.8	4.8	8.0	7.0
7-Apr-18	9.5	8.1	4.5	3.9	5.5	3.0
9-Apr-18	7.4	7.3	12.1	31.5	6.0	17.0
11-Apr-18	6.5	6.6	3.9	2.0	4.0	4.0
13-Apr-18	6.2	6.2	10.5	26.9	8.0	23.5
16-Apr-18	6.3	6.8	9.0	9.4	4.5	5.0
18-Apr-18	6.5	6.5	7.3	11.7	9.0	24.0
20-Apr-18	6.2	6.1	12.8	3.5	12.0	2.5
23-Apr-18	6.2	6.1	10.3	10.4	12.0	17.0
25-Apr-18	5.5	5.8	11.6	12.2	15.0	24.5
28-Apr-18	6.8	7.0	12.0	14.6	6.5	19.0
30-Apr-18	7.1	6.7	14.9	16.4	22.5	24.0

Table 6-5 Action and Limit (A/L) Levels Exceedance Recorded

Location	Dissolved Oxygen		Turbidity		Suspended Solids		Total Exceedance		Project Related exceedance
	AL	LL	AL	LL	AL	LL	AL	LL	AL	LL
WM1	0	0	0	0	0	0	0	0	0	0
WM2A	0	0	0	0	0	0	0	0	0	0
WM2B	0	0	0	0	0	0	0	0	0	0
WM3x	0	0	0	0	0	0	0	0	0	0
WM4	0	0	0	2	0	1	0	3	0	0
No of Exceedance	0	0	0	2	0	1	0	3	0	0

6.2.3 In this Reporting Period, a total of three (3) Limit Level exceedances, namely two (2) Limit Level exceedance of turbidity and one (1) Limit Level exceedances of Suspended Solids were recorded for the Project and they are summarized in Table 6-5. Investigation Reports for all water quality exceedances were 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 recorded at WM4 were not caused by the works under the Project.

6.2.4 NOE was issued to relevant parties upon confirmation of the monitoring result. The investigation results and summary of exceedances are summarized in Table 6-6. The details of the completed investigation reports for the exceedances are attached in Appendix N.

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
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 The last Quarterly Ecological Monitoring Report (Dec 2017 - Feb 2018) was submitted to EPD in March 2018 as standalone as supplementary of the EM&A Report. In the Reporting, no Ecological Monitoring Report was carried out and no report will be submitted.

8 Waste Management

8.1 General Waste Management

8.1.1 Waste management was carried out in accordance with the Waste Management Plan (WMP) for each contract.

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; and

l Excavated Soil.

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

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

Type of Waste	Contract 2		Contract 3		Contract 4		Contract 6		Contract 7		Contract SS C505		Total Qty.
	Qty.	Disposal location	Qty.	Disposal location	Qty.	Disposal location	Qty.	Disposal location	Qty.	Disposal location	Qty.	Disposal location
C&D Materials (Inert) (in '000m^3)	55.5979	--	2.880	--	0	--	2.901	--	1.1	--	3.717	--	66.1959
Reused in this Contract (Inert) (in '000 m^3)	0	--	0.360	--	0	--	1.955	--	0	--	0.257	--	2.572
Reused in other Contracts/ Projects (Inert) (in '000 m^3)	3.3680	Recycling facility as approved alternative site	0	--	0	--	0.255	NENT	0	--	0	--	3.623
Disposal as Public Fill (Inert) (in '000 m^3)	52.2299	Tuen Mun 38	1.734	Tuen Mun 38	0	--	0.691	Tuen Mun 38	1.1	Tuen Mun 38	2.002	TKO 137	57.7569

Table 8-2 Summary of Quantities of C&D Wastes for the Project

Type of Waste	Contract 2		Contract 3		Contract 4		Contract 6		Contract 7		Contract SS C505		Total Quantity
	Qty.	Disposal location	Qty.	Disposal location	Qty.	Disposal location	Qty.	Disposal location	Qty.	Disposal location	Qty.	Disposal location
Recycled Metal (¡¥000kg) #	33.7800	Licensed collector	0	-	0	--	0	--	6.6	Licensed collector	202.130	Licensed collector	242.51
Recycled Paper / Cardboard Packing (¡¥000kg) #	0.3240	Licensed collector	0	-	0	-	0.360	Licensed collector	0.22	Licensed collector	0	--	0.904
Recycled Plastic (¡¥000kg) #	2.5000	Licensed collector	0	-	0	--	0	--	0.001	Licensed collector	0	--	2.501
Chemical Wastes (¡¥000kg) #	0	-	0	-	0	--	0	--	0	--	0	--	0
General Refuses (¡¥000m^3)	0.5748	NENT	0.125	NENT	0	--	0.921	NENT	0.3	NENT	2.470	NENT	4.3908

Remark #: Unit of recycled metal, recycled paper/ cardboard packing, recycled plastic and chemical waste for Contract 3 was in (¡¥000m³) while the unit of chemical waste for Contract 3 was in (¡¥m³).

9 Site Inspection

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.

9.2 Findings / Deficiencies During the Reporting Month

Contract 2

9.2.1 In the Reporting Period, joint site inspection for Contract 2 to evaluate the site environmental performance has been carried out by the RE, IEC, ET and the Contractor on 6, 13, 20 and 27 April 2018. No non-compliance was noted.

9.2.2 The findings / deficiencies of Contract 2 that observed during the weekly site inspection are listed in Table 9-1.

Table 9-1 Site Observations for Contract 2

Date	Findings / Deficiencies	Follow-Up Status
06 April 2018	Ÿ No wheel washing facility at site entrance was observed. The Contractor was advised to provide wheel washing facility to avoid dust material out of site and ensure all vehicles was washed before leaving site.( Admin Building) Ÿ The Contractor was reminded to cover stockpiles of cement bags at Mid-vent near main building.	Ÿ Wheel washing was provided at site entrance. Last observation closed. Ÿ Not required for reminder.
13 April 2018	Ÿ No adverse environmental issue was observed.	Ÿ Nil.
20 April 2018	Ÿ No adverse environmental issue was observed.	Ÿ Nil.
27 April 2018	Ÿ No adverse environmental issue was observed.	Ÿ Nil.

Contract 3

9.2.3 In the Reporting Period, joint site inspection for Contract 3 to evaluate the site environmental performance has been carried out by the RE, IEC, ET and the Contractor on 4, 12, 18 and 26 April 2018. No non-compliance was noted.

9.2.4 The findings / deficiencies of Contract 3 that observed during the weekly site inspection are listed in Table 9-2.

Table 9-2 Site Observations for Contract 3

Date	Findings / Deficiencies	Follow-Up Status
4 April 2018	Ÿ No adverse environmental issue was observed.	Ÿ NA.
12 April 2018	Ÿ The Contractor should check and carry out maintenance work for the AquaSed WWPS7 to ensure the wastewater is properly treated prior discharge.	Ÿ AquaSed WWPS7 has been checked by the trained operator.
18 April 2018	Ÿ The Contractor reminded to cover the exposed slopes to minimize generation of muddy runoff during rainy day.	Ÿ Not required for reminder.
26 April 2018	Ÿ No adverse environmental issue was observed.	Ÿ NA.

Contract 4

9.2.5 In the Reporting Period, joint site inspection for Contract 4 to evaluate the site environmental performance has been carried out by the RE, IEC, ET and the Contractor on 6, 13, 16 and 27 April 2018. No non-compliance was noted.

9.2.6 The findings / deficiencies of Contract 4 that observed during the weekly site inspection are listed in Table 9-3.

Table 9-3 Site Observations for Contract 4

Date	Findings / Deficiencies	Follow-Up Status
6 April 2018	Ÿ No adverse environmental issue was observed.	Ÿ NA
13 April 2018	Ÿ No adverse environmental issue was observed.	Ÿ NA
16 April 2018	Ÿ No adverse environmental issue was observed.	Ÿ NA
27 April 2018	Ÿ No adverse environmental issue was observed.	Ÿ NA

Contract 6

9.2.7 In the Reporting Period, joint site inspection for Contract 6 to evaluate the site environmental performance has been carried out by the RE, IEC, ET and the Contractor on 4, 12, 19 and 26 April 2018. No non-compliance was noted.

9.2.8 The findings / deficiencies of Contract 6 that observed during the weekly site inspection are listed in Table 9-4.

Table 9-4 Site Observations for Contract 6

Date	Findings / Deficiencies	Follow-Up Status
4 April 2018	Ÿ Open stockpiles was observed at the roadside of LMH road. The Contractor was advised to cover it with tarpaulin sheets to avoid dust emission.	Ÿ The stockpile was covered properly to reduce dust emission.
12 April 2018	Ÿ No adverse environmental issue was observed.	Ÿ NA
19 April 2018	Ÿ No adverse environmental issue was observed.	Ÿ NA
26 April 2018	Ÿ Part of open slope was observed without proper covering near river at work area of D01. The Contractor was avised to provide proper covering for open slope of work area D01.	Ÿ The open slop was covered properly.

Contract SS C505

9.2.9 In the Reporting Period, joint site inspection for Contract SS C505 to evaluate the site environmental performance has been carried out by the RE, ET and the Contractor on 4, 11, 18 and 25 April 2018 in which IEC joined the site inspection on 25 April 2018. No non-compliance was noted.

9.2.10 The findings / deficiencies of Contract SS C505 that observed during the weekly site inspection are listed in Table 9-5.

Table 9-5 Site Observations for Contract SS C505

Date	Findings / Deficiencies	Follow-Up Status
28 Mar 2018	Ÿ Oil leakage was observed on the ground of 1/F in front of PTB. The Contractor should clean the oil leakage and dispose of as chemical wastes. Besides, the Contractor should also provide proper label for chemical container and place chemical containers inside drip tray.	Ÿ Oil leakage was cleaned and disposed as chemical waste and chemical containers were placed inside drip tray.
4 April 2018	Ÿ No adverse environmental issue was observed.	Ÿ NA
11 April 2018	Ÿ Cement grouting activity was observed without proper mitigation at R/F of building 7. The Contractor was advised to provide proper sheltered area with three sides and top for cement grouting activity to avoid dust emission.	Ÿ No cement grouting was carried out and the equipment was covered. Last observation closed.
18 April 2018	Ÿ The Contractor was reminded to clean stagnant water within site area after raining.	Ÿ Not required for reminder.
25 April 2018	Ÿ The Contractor was reminded to clean stagnant water within site area after raining. Ÿ The Contractor was reminded to perform house-keeping within site area (especially food waste).	Ÿ Not required for reminder. Ÿ Not required for reminder.

Contract 7

9.2.11 In the Reporting Period, joint site inspection for Contract 7 to evaluate the site environmental performance has been carried out by the RE, IEC, ET and the Contractor on 6, 13, 17 and 27 April 2018. No non-compliance was noted.

9.2.12 The findings / deficiencies of Contract 7 that observed during the weekly site inspection are listed in Table 9-6.

Table 9-6 Site Observations for Contract 7

Date	Findings / Deficiencies	Follow-Up Status
6 April 2018	Ÿ Exposed dust materials along site boundary was observed. The Contractor should provide proper mitigation measure along site boundary to avoid potential runoff out of site. Ÿ The Contractor was reminded to spray water regularly for unpaved haul road.	Ÿ Proper mitigation measure was provided. Last observation closed. Ÿ Not required for reminder.
13 April 2018	Ÿ No adverse environmental issue was observed.	Ÿ NA
17 April 2018	Ÿ No adverse environmental issue was observed.	Ÿ NA
27 April 2018	Ÿ Silt sedimentation tanks was observed near site entrance. The Contractor was advised to maintain sedimentation tank regularly. The Contractor was reminded to provide proper mitigation measure along site boundary to avoid potential runoff out of site. Ÿ Muddy surface runoff near site boundary of bridge E was observed. The Contractor was advised to provide proper mitigation measure to avoid runoff out of site area. entrance.	Ÿ Proper maintenance was carried out for sedimentation tank. Last observation closed. Ÿ Proper mitigation was provided for site boundary to aviod surface runoff out of site. Last observation closed.

9.2.13 General housekeeping such as daily site tidiness and cleanliness should be maintained for all Contracts. Furthermore, the Contractors were reminded to implement Waste Management Plan of the Project.

10 Environmental Complaint and Non-Compliance

10.1 Environmental Complaint, Summons and Prosecutions

10.1.1 In the Reporting Period, two (2) documented environmental complaints were received under the EM&A program of the Project which related to water quality issue. No summons and prosecution under the EM&A Programme was lodged for all Contracts. The status of the outstanding investigation report in previous months is summarized below.

Date of complaint	Complaint Detail	Investigation Status
13 April 2018 (received by ET on 20 April 2018)	EPD had received a complaint regarding foams in water discharged from the North Portal Site of Contract 2.	The ET¡¦s draft IR was provided for IEC on 8 May 2018 and IEC issued comments on same day. The 2^nd version of the IR was provided for IEC¡¦s further review on 10 May 2018 and IEC commented on 14 May 2018. Further information is being collected from the Contractor of Contract 2 (DHK) to incorporate into the IR. The finalized IR will be provided in next reporting month.
29 April 2018 (received by ET on 2 May 2018)	A public complaint was received from ASD regarding the muddy water flowing from the construction site of Contact SS 505.	Investigation was in progress and it will be provided in next reporting month.

10.1.2 The statistical summary of environmental complaint is presented in Tables 10-1, 10-2 and 10-3.

Table 10-1 Statistical Summary of Environmental Complaints

Reporting Period	Contract No	Environmental Complaint Statistics			Project related complaint
		Frequency	Cumulative	Complaint Nature
19 May 2014 ¡V 31 Mar 2018	Contract 2	0	34	Ÿ (18)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
06 Nov 2013 ¡V 31 Mar 2018	Contract 3	0	6	Ÿ (2) Dust Ÿ (3) Water quality Ÿ (1) Noise	0
16 Aug 2013 ¡V 31 Mar 2018	Contract 5	0	4	Ÿ (3) Dust Ÿ (1) Noise	0
16 Aug 2013 ¡V 31 Mar 2018	Contract 6	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	(7) water quality (3) dust (1) Nuisance (1) Water quality and dust
15 Feb 2016 ¡V 28 Feb 2018	Contract 7	0	3	Ÿ (1) Noise Ÿ (2) Water quality and dust	(1) Water quality and dust
16 Aug 2013 ¡V 31 Mar 2018	SS C505	0	4	Ÿ (1) Noise Ÿ (1) dust Ÿ (2) Water quality and dust	(1) Water quality and dust
1 ¡V 30 Apr 2018	Contract 2	1	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	NA
	Contract 3	0	6	Ÿ (2) Dust Ÿ (3) Water quality Ÿ (1) Noise	NA
	Contract 4	0	0	NA	NA
	Contract 6	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	NA
	Contract 7	0	3	Ÿ (1) Noise Ÿ (2) Water quality and dust	NA
	SS C505	1	5	Ÿ (1) Noise Ÿ (1) dust Ÿ (2) Water quality and dust Ÿ (1) Water quality	NA

Table 10-2 Statistical Summary of Environmental Summons

Reporting Period	Contract No	Environmental Summons Statistics
		Frequency	Cumulative	Complaint Nature
19 May 2014 ¡V 31 Mar 2018	Contract 2	0	1	contravening the Water Pollution Control (General) Regulations
06 Nov 2013 ¡V 31 Mar 2018	Contract 3	0	0	NA
16 Aug 2013 ¡V 31 Mar 2018	Contract 5	0	0	NA
16 Aug 2013 ¡V 31 Mar 2018	Contract 6	0	0	NA
15 Feb 2016 ¡V 28 Feb 2018	Contract 7	0	0	NA
16 Aug 2013 ¡V 31 Mar 2018	SS C505	0	0	NA
1 ¡V 30 Apr 2018	Contract 2	0	1	NA
	Contract 3	0	0	NA
	Contract 4	0	0	NA
	Contract 6	0	0	NA
	Contract 7	0	0	NA
	SS C505	0	0	NA

Table 10-3 Statistical Summary of Environmental Prosecutions

Reporting Period	Contract No	Environmental Prosecutions Statistics
		Frequency	Cumulative	Complaint Nature
19 May 2014 ¡V 31 Mar 2018	Contract 2	0	1	contravening the Water Pollution Control (General) Regulations
06 Nov 2013 ¡V 31 Mar 2018	Contract 3	0	0	NA
16 Aug 2013 ¡V 31 Mar 2018	Contract 5	0	0	NA
16 Aug 2013 ¡V 31 Mar 2018	Contract 6	0	0	NA
15 Feb 2016 ¡V 28 Feb 2018	Contract 7	0	0	NA
16 Aug 2013 ¡V 31 Mar 2018	SS C505	0	0	NA
1 ¡V 30 Apr 2018	Contract 2	0	1	NA
	Contract 3	0	0	NA
	Contract 4	0	0	NA
	Contract 6	0	0	NA
	Contract 7	0	0	NA
	SS C505	0	0	NA

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 M.

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, 4, 5, 6, 7 and Contract 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 wastewater treatment facilities i.e. sedimentation tank or similar facility before 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.

11.2 Tentative Construction Activities in the Coming Month

11.2.1 As advised by the ER, the construction works under Contract 5 was substantially completed on 31 August 2016. Construction activities for other Contracts in the coming month are listed below:

Contract 2

Mid-Vent Portal	Ÿ Construction of Cut and Cover structure and backfilling Ÿ Construction of adit enlargement internal structure Ÿ Stud tunnel internal structure and E&M installation Ÿ Ventilation building superstructure, fence wall, internal fitting out and E&M installation Ÿ Structure connecting adit tunnel and ventilation building Ÿ Permanent drainage and underground utilities
North Portal	Ÿ Construction of retaining wall, permanent drainage, site formation and slip road Ÿ Tunnel waterproofing, lining, backfilling and E&M installation Ÿ Construction of cross passage and internal structure Ÿ North ventilation building superstructure, internal structure and backfilling Ÿ Drainage cleansing and construction of temporary utility bridge across the mid-platform
South Portal	Ÿ Waterproofing and lining activities inside the tunnel Ÿ Construction of tunnel cross passage, tunnel backfilling and E&M installation Ÿ South ventilation building fitting out and E&M installation Ÿ Construction of retaining walls and backfilling activities
Admin Building	Ÿ Construction of outdoor platform and vehicle access road. Ÿ Building fit out, E&M installation and soft landscaping works.

Contract 3

Ÿ Cable detection and trial trenches

Ÿ Remaining works on new Footbridge

Ÿ Noise barrier construction

Ÿ Road pavement works

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

Ÿ Installation of Noise barrier steel column & panel, and sign gantry (on Grade and on bridge deck)

Ÿ Parapet Installation on bridge deck

Ÿ Road Drainage Works

Ÿ Construction of profile barrier & Planter wall on Bridge deck

Ÿ Stressing of external tendon

Ÿ Bitumen paving on bridge deck

Ÿ Installation of deck cell light inside the bridge deck

Ÿ Installation of movement joint on the bridge

Ÿ Construction of retaining wall behind abutment

Ÿ Landscaping works

Contract 4

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&A installation at OHVD in tunnel

Contract 6

Ÿ Bridge construction

Ÿ Tunnel Works

Ÿ Sewage Treatment Plant Construction

Ÿ Tunnel Ventilation Building Construction

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

Contract 7

Ÿ Deck construction at Bridge E

Ÿ Profile barrier construction at Bridge B, D and E

Ÿ Construction of Façade and BMU at Bridge C

Ÿ Drainage and watermains at perimeter road

Ÿ Bitumen pavement at perimeter road

Contract SS C505

Ÿ   Building no. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 21, 22, 23, 24, 25, 26, 27, 28, 29, 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 and internal wall 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, On Grade Ground Slab and Paving

Ÿ PTB Southern Entrance Construction & Curtain Wall Installation

Ÿ 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, 10, 11, 14, 18, 36 and 41

Ÿ Elevated Walkway E1, E2, E3 and E4 construction

Ÿ Tower Crane Dismantling Works

11.3 Key Issues for the Coming Month

11.3.1 Key issues to be considered in the coming month for Contracts 2, 3, 4, 6, 7 and SS C505 include:

Ÿ Implementation of control measures for rainstorm;

Ÿ Regular clearance of stagnant water during wet season;

Ÿ Implementation of dust suppression measures at all times;

Ÿ Potential wastewater quality impact due to surface runoff;

Ÿ Potential fugitive dust quality impact due from the dry/loose/exposure soil surface/dusty material;

Ÿ Disposal of empty engine oil containers within site area;

Ÿ Ensure dust suppression measures are implemented properly;

Ÿ Sediment catch-pits and silt removal facilities should be regularly maintained;

Ÿ Management of chemical wastes;

Ÿ Discharge of site effluent to the nearby wetland, stockpiling or disposal of materials, and any dredging or construction area at this area are prohibited;

Ÿ Follow-up of improvement on general waste management issues; and

Ÿ Implementation of construction noise preventative control measures

12 Conclusions and Recommendations

12.1 Conclusions

12.1.1 This is the 57^th monthly EM&A report presenting the monitoring results and inspection findings for the Reporting Period from 1 to 30 April 2018.

12.1.2 For air quality monitoring, no 1-hour TSP and 24-hour TSP monitoring results triggered the Action or Limit Levels were recorded.

12.1.3 In the Reporting Period, no construction noise measurement results that exceeded the Limit Level were recorded. Moreover, no valid noise complaint which triggered an Action Level exceedance was recorded.

12.1.4 For water quality monitoring, a total of 3 LL exceedances, namely 2 LL exceedance of turbidity and 1 LL exceedances of SS were recorded. 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 unknown source of muddy water contributed from outside the project area and not caused by the works under the Project.

12.1.5 In this Reporting Period, two (2) documented environmental complaints were received under the EM&A programme regarding to the water quality issue. The investigation report for the complaint for Contract 2 regarding the foamy discharge is under reviewed by IEC while the other complaint for Contract SS C505 is underway by ET.

12.1.6 In the Reporting Period, no environmental summons and prosecution under the EM&A Programme was lodged for all Contracts.

12.1.7 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.