Certified by Environmental Team Leader

 

Verified by Independent Environmental Checker

 

 

Contract No. HY/2013/04 HZMB HKBCF – Infrastructure Works Stage II (Southern Portion)

 

Monthly EM&A Report for August 2018

 

September 2018

 

 

China State Construction Engineering (Hong Kong) Limited

 

 

 

Mott MacDonald

3/F Mapletree Bay Point

348 Kwun Tong Road

Kowloon

Hong Kong

 

T +852 2828 5757

F +852 2827 1823

mottmac.hk

 

 

 

 

 

 

 

 

 

 

 

                                                               

                                                               


 


Information class:

Standard

 

This document is issued for the party which commissioned it and for specific purposes connected with the above-captioned project only. It should not be relied upon by any other party or used for any other purpose.

We accept no responsibility for the consequences of this document being relied upon by any other party, or being used for any other purpose, or containing any error or omission which is due to an error or omission in data supplied to us by other parties.

This document contains confidential information and proprietary intellectual property. It should not be shown to other parties without consent from us and from the party which commissioned it.

This report has been prepared solely for use by the party which commissioned it (the ‘Client’) in connection with the captioned project. It should not be used for any other purpose. No person other than the Client or any party who has expressly agreed terms of reliance with us (the ‘Recipient(s)’) may rely on the content, information or any views expressed in the report. We accept no duty of care, responsibility or liability to any other recipient of this document. This report is confidential and contains proprietary intellectual property.

No representation, warranty or undertaking, express or implied, is made and no responsibility or liability is accepted by us to any party other than the Client or any Recipient(s), as to the accuracy or completeness of the information contained in this report. For the avoidance of doubt this report does not in any way purport to include any legal, insurance or financial advice or opinion.

We disclaim all and any liability whether arising in tort or contract or otherwise which it might otherwise have to any party other than the Client or the Recipient(s), in respect of this report, or any information attributed to it.

We accept no responsibility for any error or omission in the report which is due to an error or omission in data, information or statements supplied to us by other parties including the client (‘Data’). We have not independently verified such Data and have assumed it to be accurate, complete, reliable and current as of the date of such information.

Forecasts presented in this document were prepared using Data and the report is dependent or based on Data. Inevitably, some of the assumptions used to develop the forecasts will not be realised and unanticipated events and circumstances may occur. Consequently Mott MacDonald does not guarantee or warrant the conclusions contained in the report as there are likely to be differences between the forecasts and the actual results and those differences may be material. While we consider that the information and opinions given in this report are sound all parties must rely on their own skill and judgement when making use of it.

Under no circumstances may this report or any extract or summary thereof be used in connection with any public or private securities offering including any related memorandum or prospectus for any securities offering or stock exchange listing or announcement.

 

 

Contents

Executive summary                                                                                                         1

1      Introduction                                                                                                               4

1.1    Background                                                                                                          4

1.2    Project Description                                                                                                4

1.3    Project Organisation                                                                                              4

1.4    Construction Programme                                                                                       5

1.5    Construction Works undertaken during the Reporting Period                                    5

2      Air Quality Monitoring                                                                                             6

2.1    Monitoring Locations                                                                                             6

2.2    Monitoring Requirements                                                                                       6

2.3    Monitoring Results and Exceedance Investigations                                                  7

3      Noise Monitoring                                                                                                      8

3.1    Monitoring Locations                                                                                             8

3.2    Monitoring Requirements                                                                                       8

3.3    Monitoring Results                                                                                                 9

4      Water Quality Monitoring                                                                                     10

4.1    Monitoring Locations                                                                                            10

4.2    Monitoring Requirements                                                                                     10

4.3    Monitoring Results and Exceedance Investigations                                                11

5      Dolphin Monitoring                                                                                                14

5.1    Monitoring Locations                                                                                            14

5.2    Monitoring Requirements                                                                                     15

5.3    Monitoring Results                                                                                               16

6      Environmental Site and Audit                                                                              17

6.1    Site Inspection                                                                                                     17

6.2    Advice on the Solid and Liquid Waste Management Status                                    18

6.2.1     Disposal of Marine Sediment Extracted from Bored Piling Works                18

6.3    Environmental Licenses and Permits                                                                    20

6.4    Implementation Status of Environmental Mitigation Measures                                 20

6.5    Summary of Exceedance of the Environmental Quality Performance Limit              20

6.6    Summary of Complaints, Notification of Summons and Successful Prosecution       21

7      Future Key Issues                                                                                                 22

7.1    Construction Programme for the Coming Months                                                   22

7.2    Environmental Site Inspection Schedule for the Coming Month                               22

8      Conclusions                                                                                                            23

8.1    Conclusions                                                                                                        23

 

 

Figures

Figure 2.1: Location of Air Quality Monitoring Stations

Figure 3.1: Location of Noise Monitoring Stations

Figure 4.1: Location of Water Quality Monitoring Stations

Figure 5.1: Impact Dolphins Monitoring Line Transect Layout Map

Appendices

Appendix A.   Location of Works Areas

Appendix B.   Project Organization for Environmental Works

Appendix C.   Construction Programme

Appendix D.   Event and Action Plan

Appendix E.   Waste Flow Table

Appendix F.    Environmental Licences and Permits

Appendix G.   Implementation Schedule for Environmental Mitigation Measures (EMIS)

Appendix H.   Statistics on Environmental Complaints, Notification of Summons and Successful Prosecutions

Appendix I.     Environmental Site Inspection Schedule

Tables

Table 1.1: Contact Information of Key Personnel 5

Table 2.1: Construction Dust Monitoring Locations  6

Table 2.2: Action and Limit Levels for 1-hour TSP  7

Table 2.3: Action and Limit Levels for 24-hour TSP  7

Table 3.1: Construction Noise Monitoring Locations  8

Table 3.2: Action and Limit Level for Construction Noise  9

Table 4.1: Impact Water Quality Monitoring Stations  10

Table 4.2: Action and Limit Levels for Water Quality  11

Table 4.3: Action and Limit Level Exceedance for Water Quality  11

Table 5.1: Impact Dolphin Monitoring Line Transect Co-ordinates (Provided by AFCD) 14

Table 5.2: Action and Limit Levels for Chinese White Dolphin Monitoring - Approach to Define Action Level (AL) and Limit Level (LL) 16

Table 5.3: Derived Value of Action Level (AL) and Limit Level (LL) for Chinese White Dolphin Monitoring  16

Table 6.1: Summary of Marine Sediment disposed to Dumping Site via Contract No. HY/2013/03  19

Table 7.1: Construction Activities for September 2018  22

 

 

 


 

Executive summary

This Monthly Environmental Monitoring and Audit (EM&A) Report is prepared for Contract No. HY/2013/04 “Hong Kong-Zhuhai-Macao Bridge Hong Kong Boundary Crossing Facilities – Infrastructure Works Stage II (Southern Portion)” (hereafter referred to as “the Contract”) for the Highways Department of Hong Kong Special Administrative Region (HKSAR). The Contract was awarded to China State Construction Engineering (Hong Kong) Limited (hereafter referred to as “the Contractor”) and Mott MacDonald Hong Kong Limited (MMHK) was appointed as the Environmental Team (ET) by the Contractor.

The Contract is part of the “Hong Kong-Zhuhai-Macao Bridge Hong Kong Boundary Crossing Facilities” (HZMB HKBCF) Project which is a “Designated Project” under Schedule 2 of the Environmental Impact Assessment (EIA) Ordinance (Cap. 499) and for which an EIA Report (Register No. AEIAR-145/2009) was prepared and approved. The current Environmental Permit (EP) for HKBCF, namely No. EP-353/2009/K, was issued on 11 April 2016. These documents are available through the EIA Ordinance Register. Commencement of the Contract took place on 13 March 2015 and the construction works commenced on 13 July 2015.

Mott MacDonald Hong Kong Limited has been appointed by the Contractor to implement the Environmental Monitoring & Audit (EM&A) programme for the Contract in accordance with the Updated EM&A Manual for HKBCF (Version 1.0) and will be providing environmental team services for the Contract.

This is the 38th Monthly EM&A Report for the Contract which summaries findings of the EM&A works during the reporting period from 1 to 31 August 2018 (the “reporting period”).

Environmental Monitoring and Audit Progress

The monthly EM&A programme was undertaken in accordance with the Updated EM&A Manual for HKBCF (Version 1.0).

It should be noted that the air quality, noise, water quality and dolphin monitoring works for the Contract are covered by Contract No. HY/2013/01 “Hong Kong-Zhuhai-Macao Bridge HKBCF – Passenger Clearance Building” and Contract No. HY/2011/03 “Hong Kong-Zhuhai-Macao Bridge Hong Kong Link Road – Section between Scenic Hill and HKBCF”, except air quality and noise monitoring at AMS3B and NMS3B as described below. 

During the reporting month, AECOM PRE’s Office at Tung Chung was relocated to Siu Ho Wan and the former office location is scheduled to be disconnected from the utility supplies and demolished. Therefore, the air quality and noise monitoring works at AMS3B and NMS3B under Contract No. HY/2013/01 “Hong Kong-Zhuhai-Macao Bridge HKBCF – Passenger Clearance Building” were concluded on 15 August 2018. AMS3B and NMS3B were relocated to new monitoring locations AMS3C and NMS3C respectively with air quality and noise monitoring works commencing at the new locations on 20 August 2018 under this Contract.

A summary of the monitoring activities conducted by the ET of the Contract during the reporting period is presented in the monthly EM&A Report prepared under Contract No. HY/2013/01.

The ET of the Contract or another ET of the HZMB project is required to conduct impact air quality monitoring at AMS3C, AMS6 and AMS7B, noise monitoring at NMS2 and NMS3C, water quality monitoring at the twenty-one stations and dolphin monitoring works at the twenty-four transects as part of EM&A programme if these monitoring stations are no longer covered under Contract Nos. HY/2013/01, HY/2013/04 and HY/2011/03. However, this is subject to ENPO’s final decision on which ET should carry out the monitoring work at these stations. 

The dates of site inspection during the reporting period are listed below:

    Environmental Site Inspection: 8, 15, 20 and 29 August 2018

Breaches of Action and Limit Levels

Summary of Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level at AMS6 shall be referred to the monthly EM&A report prepared by Contract No. HY/2011/03.

There was no Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level recorded at station AMS7B by the Environmental Team of Contract No. HY/2013/01 during the reporting period.

There was no Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level recorded at station AMS3C by the Environmental Team of this Contract during the reporting period.

There was no Action and Limit Level exceedance for noise recorded at station NMS2 and station NMS3B by the Environmental Team of Contract No. HY/2013/01 during the reporting period.

There was no Action and Limit Level exceedance for noise recorded at station NMS3C by the Environmental Team of this Contract during the reporting period.

123 exceedances of water quality (consisting of 93 Action Level and 22 Limit Level exceedances of dissolved oxygen, one Action Level exceedance of turbidity and seven Action Level exceedances of suspended solids) were recorded by the Environmental Team of Contract No. HY/2013/01 during the reporting period and were referred to this Contract for follow-up. The ET of this Contract conducted investigations and the findings with respect to the Contract can be referred to the corresponding monthly EM&A Report prepared under Contract No. HY/2013/01.

Impact dolphin monitoring results at all transects during the reporting period are reported in the monthly EM&A Report (for the reporting period) prepared for Contract No. HY/2013/01.

Complaint Log

There were no complaints received in relation to the environmental impact during the reporting period.

Notifications of Summons and Successful Prosecutions

There were no notifications of summons or prosecutions received during this reporting period.

Reporting Changes

Air quality monitoring station AMS3B (AECOM PRE’s Office) was relocated to AMC3C (Ying Tung Estate Market Rooftop) with effect from 20 August 2018. Also, from this date the implementation of environmental monitoring for air quality and reporting of impact monitoring results and exceedances for 1-hr TSP level and 24-hr TSP level at station AMS3C were performed by the Environmental Team of this Contract. Impact monitoring results were shared with the Environmental Team of Contract No. HY/2013/01 and are reported in the monthly EM&A Report (for the reporting period) prepared for Contract No. HY/2013/01. The same baseline and Action/Limit Levels for air quality, as derived from the baseline monitoring data recorded at AMS3 and applied for AMS3B, also apply with the abovementioned relocation to AMS3C.

Noise monitoring station NMS3B (AECOM PRE’s Office) was relocated to NMS3C (Ying Tung Estate Refuse Collection Point) with effect from 20 August 2018. Also, from this date the implementation of environmental monitoring reporting of impact monitoring results and exceedances for noise at NMS3C were continued by the Environmental Team of this Contract. . Impact monitoring results were shared with the Environmental Team of Contract No. HY/2013/01 and are reported in the monthly EM&A Report (for the reporting period) prepared for Contract No. HY/2013/01. The same Action/Limit Levels for noise at NMS3, and applied for NMS3B, also apply with the abovementioned relocation to NMS3C.

The reporting of impact monitoring results and exceedances for 1-hr TSP level and 24-hr TSP level at station AMS7B, for noise at station NMS2, for water quality and for dolphin were continued by the Environmental Team of Contract No. HY/2013/01 during the reporting month.

Future Key Issues

The future key issues to be undertaken in the upcoming month are:

    Erection of precast segments;

    Construction of parapets for bridge structures;

    Seawall reinstatement at Box Culvert D outfall (land-based);

    Construction of Abutment A1601 and associated retaining walls;

    Construction of Bridge D16 in-situ deck;

    Backfilling walls and formation of fill slopes and road embankment;

    Drainage works and watermains laying; and

    Roadworks and road furniture.

 

 

1        Introduction

1.1      Background

On 13 March 2015, Mott MacDonald Hong Kong Limited (MMHK) was commissioned by China State Construction Engineering (Hong Kong) Limited (also referred to as “the Contractor”) to undertake the Environmental Team (ET) services (including environmental monitoring and audit (EM&A)) for Contract No. HY/2013/04 “Hong Kong-Zhuhai-Macao Bridge Hong Kong Boundary Crossing Facilities – Infrastructure Works Stage II (Southern Portion)” (“the Contract”) for the Highways Department of Hong Kong Special Administrative Region (HKSAR).

The Contract is part of the “Hong Kong-Zhuhai-Macao Bridge Hong Kong Boundary Crossing Facilities” (HZMB HKBCF) Project which is a “Designated Project” under Schedule 2 of the Environmental Impact Assessment (EIA) Ordinance (Cap. 499) and for which an EIA Report (Register No. AEIAR-145/2009) was prepared and approved. The current Environmental Permit (EP) for HKBCF, namely No. EP-353/2009/K, was issued on 11 April 2016. These documents are available through the EIA Ordinance Register. Commencement of the Contract took place on 13 March 2015 and the construction works commenced on 13 July 2015. The works areas of the contract are shown in Appendix A.

This is the 38th Monthly EM&A Report summarising the findings of EM&A activities conducted under the Contract from 1 to 31 August 2018 (the “reporting period”) and is submitted to fulfil Condition 5.4 of the EP.

1.2      Project Description

The Proposed works under this Contract comprise the following:

    Construction of vehicular bridge and at-grade roads at the southern portion of Hong Kong Boundary Crossing Facilities;

    Construction of associated street lighting, street furniture, road marking, road signage, box culverts and outfalls, drainage, sewerage, fresh water and flushing water supply, irrigation, landscape, electrical and mechanical (E&M), utilities and services works;

    Provisioning of civil engineering works and power supply for Traffic Control and Surveillance System (TCSS); and

    Other works in accordance with the Contract.

1.3      Project Organisation

The organisation chart and lines of communication with respect to the on-site environmental management structure together with the contact information of the key personnel are shown in Appendix B. The key personnel contact names and numbers are summarized in Table 1.1. 

 

 

 

Table 1.1: Contact Information of Key Personnel

Party

Position

Name

Telephone

Fax

Engineer or Engineer’s Representative

(AECOM Asia Co. Ltd.)

Chief Resident Engineer

Alfred Cheng

3958 7471

3468 2076

Environmental Project Office / Independent Environmental Checker

(Ramboll Hong Kong LImited)

Environmental Project Office Leader

Y H Hui

3465 2888

3465 2899

Independent Environmental Checker

Raymond Dai

3465 2888

3465 2899

 

Environmental Site Supervisor

Ray Yan

5181 8165

3465 2899

Contractor

(China State Construction Engineering (Hong Kong) Limited)

Site Agent

Jason Chung

9127 8369

2459 4336

Environmental Officer

Xavier Lam

9493 2944

2459 4336

 

Billy Lao

6679 1950

2459 4336

Environmental Team

(Mott MacDonald Hong Kong Limited)

Environmental Team Leader

Gary Chow

2828 5874

2827 1823

24-hour Complaint Hotline

-

-

5236 7111

-

1.4      Construction Programme

The Construction Works Programme of the Project is provided in Appendix C.

1.5      Construction Works undertaken during the Reporting Period

A summary of the construction activities undertaken during this reporting period is shown below:

    Pre-cast segment erection

    Seawall reinstatement at Box Culvert D outfall

    Construction of Abutment A1601 and associated retaining walls

    Construction of Bridge D16 in-situ deck

    Backfilling walls and formation of fill slopes and road embankment

    Drainage works and watermains laying

    Roadworks and road furniture

    No marine-based segment delivery (all segments stored at segment storage yard on HKBCF island site)

    No generation of excavated marine sediment

Marine-based outfall works and temporary soft landscaping works had not commenced during this reporting month.

 

 

 

2        Air Quality Monitoring

2.1      Monitoring Locations

For this reporting month, the air quality monitoring works for the Contract are covered by Contract No. HY/2013/01 “Hong Kong-Zhuhai-Macao Bridge HKBCF – Passenger Clearance Building”, Contract No. HY/2013/04 “Hong Kong-Zhuhai-Macao Bridge Hong Kong Boundary Crossing Facilities – Infrastructure Works Stage II (Southern Portion)” and Contract No. HY/2011/03 “Hong Kong-Zhuhai-Macao Bridge Hong Kong Link Road – Section between Scenic Hill and HKBCF”.

During the reporting month, AECOM PRE’s Office at Tung Chung was relocated to Siu Ho Wan and the former office location is scheduled to be disconnected from the utility supplies and demolished. Therefore, the air quality monitoring works at AMS3B (Site Boundary of Site Office Area at Works Area WA2) under Contract No. HY/2013/01 “Hong Kong-Zhuhai-Macao Bridge HKBCF – Passenger Clearance Building” were concluded on 15 August 2018, and AMS3B was relocated to new monitoring location AMS3C (Ying Tung Estate Market Rooftop) with air quality monitoring works commencing at the new location on 20 August 2018 under this Contract. The same baseline and Action Level for air quality, as derived from the baseline monitoring data recorded at AMS3 and applied at AMS3B, was adopted for the new location AMS3C.

The ET of the Contract or another ET of the HZMB project is required to conduct impact air quality monitoring at AMS3C, AMS6 and AMS7B as part of EM&A programme if these air quality monitoring stations are no longer covered under Contract No. HY/2013/04, HY/2013/01  and HY/2011/03 respectively.

Table 2.1 describes the details of the monitoring stations and Figure 2.1 shows the locations of air monitoring stations.

Table 2.1: Construction Dust Monitoring Locations

Identification No.

Location Description

AMS3C

Ying Tung Estate Market Rooftop

AMS6(1)

Dragonair/CNAC (Group) Building

AMS7B(1)

3RS Site Offices

Remarks:   (1) The ET of this Contract should conduct impact air quality monitoring at stations AMS6 and AMS7B listed in the table as part of EM&A programme according to latest notification from ENPO when the monitoring station(s) is/are no longer covered by another ET of the HZMB project.

2.2             Monitoring Requirements

The monitoring requirements, monitoring equipment, monitoring parameters, frequency and duration, monitoring methodology and monitoring schedule are detailed in the monthly EM&A Reports prepared for Contract Nos. HY/2013/01 and HY/2011/03.

The Action and Limit Levels for 1-hr TSP and 24-hr TSP are provided in Table 2.2 and Table 2.3 respectively. The same baseline and Action/Limit Levels for air quality, as derived from the baseline monitoring data recorded at and AMS3 and AMS7, apply with the abovementioned relocations to AMS3C and AMS7B respectively.

Table 2.2: Action and Limit Levels for 1-hour TSP

Monitoring Station 

Action Level, µg/m3

Limit Level, µg/m3

AMS3C – Ying Tung Estate Market Rooftop

368

500

AMS6 – Dragonair / CNAC (Group) Building (HKIA)

360

500

AMS7B – 3RS Site Offices

370

500

Table 2.3: Action and Limit Levels for 24-hour TSP

Monitoring Station 

Action Level, µg/m3

Limit Level, µg/m3

AMS3C – Ying Tung Estate Market Rooftop

167

260

AMS6 – Dragonair / CNAC (Group) Building (HKIA)

173

260

AMS7B – 3RS Site Offices

183

260

The event and action plan is provided in Appendix D.

If exceedance(s) at these stations is/are recorded by the ET of the Contract or referred by the other ET under the HZMB project to the Contract, the ET of the Contract will carry out an investigation and findings will be reported in the monthly EM&A Report.

2.3             Monitoring Results and Exceedance Investigations

The monitoring results for AMS3C and AMS7B are recorded by Contract Nos. HY/2013/04 and HY/2013/01 respectively, and are reported in the monthly EM&A Report prepared for Contract No. HY/2013/01.

The monitoring results for AMS6 are reported in the monthly EM&A Reports prepared for Contract No. HY/2011/03.

Summary of Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level at AMS6 shall be referred to the monthly EM&A report prepared by Contract No. HY/2011/03.

There was no Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level recorded at station AMS7B by the Environmental Team of Contract No. HY/2013/01 during the reporting period.

 

 

3        Noise Monitoring

3.1      Monitoring Locations

For this reporting month, the noise monitoring works for the Contract are covered by Contract No. HY/2013/01 “Hong Kong-Zhuhai-Macao Bridge HKBCF – Passenger Clearance Building” and Contract No. HY/2013/04 “Hong Kong-Zhuhai-Macao Bridge Hong Kong Boundary Crossing Facilities – Infrastructure Works Stage II (Southern Portion)”. The ET of the Contract or another ET of the HZMB project is required to conduct noise monitoring at NMS2 and NMS3B/NMS3C as part of EM&A programme if these monitoring stations are no longer covered under Contract No. HY/2013/01 and HY/2013/04.

During the reporting month, AECOM PRE’s Office at Tung Chung was relocated to Siu Ho Wan and the former office location is scheduled to be disconnected from the utility supplies and demolished. Therefore, the noise monitoring works at NMS3B (AECOM PRE’s Office) under Contract No. HY/2013/01 “Hong Kong-Zhuhai-Macao Bridge HKBCF – Passenger Clearance Building” were concluded on 15 August 2018, and NMS3B was relocated to new monitoring location NMS3C (Ying Tung Estate Refuse Collection Point) with noise monitoring works commencing at the new location on 20 August 2018 under this Contract. The same baseline noise level (as derived from the baseline monitoring data recorded at AMS3 and applied at AMS3B) and Limit Level for noise, were adopted for the new location AMS3C.

Table 3.1 describes the details of the monitoring stations and Figure 3.1 shows the locations of noise monitoring stations.

Table 3.1: Construction Noise Monitoring Locations

Identification No.

Location Description

NMS2(1)

Seaview Crescent

NMS3B(1) (2) (3)

AECOM PRE’s Office

NMS3C(1) (2) (4)

Ying Tung Estate Refuse Collection Point

Remarks:   (1) The ET of this Contract should conduct impact noise monitoring at the NMS listed in the table as part of EM&A programme according to the latest notification from ENPO when the monitoring station(s) is/are no longer covered by another ET of the HZMB project.

                   (2)  The Action and Limit Levels for schools will be applied for this alternative monitoring location.

             (3)  Noise monitoring works at NMS3B were concluded on 15 August 2018 due to relocation of AECOM PRE’s Office to Siu Ho Wan and scheduled demolition of site office.

             (4)  Noise monitoring works at NMS3C commenced on 20 August 2018.

3.2      Monitoring Requirements

The monitoring requirements, monitoring equipment, monitoring parameters, frequency and duration, monitoring methodology and monitoring schedule are detailed in the monthly EM&A Reports prepared for Contract No. HY/2013/01.

The Action and Limit Levels for construction noise are defined in Table 3.2.

Table 3.2: Action and Limit Level for Construction Noise

Parameter

Action Level

Limit Level

07:00 – 19:00 hours on normal weekdays

When one documented complaint is received

75 dB(A)*

Notes:        If works are to be carried out during restricted hours, the conditions stipulated in the construction noise permit issued by the Noise Control Authority have to be followed.

                   *     Day time noise Limit Level of 70 dB(A) applies to education institutions, while 65 dB(A) applies during the school examination period. The Limit Level of 70 dB(A), which was applied for NMS3 (being a school), will also be applied for NMS3B and NMS3C.

The event and action plan is provided in Appendix D.

If exceedance(s) at these stations is/are recorded by the ET of the Contract or referred by the other ET under the HZMB project to the Contract, the ET of the Contract will carry out an investigation and findings will be reported in the monthly EM&A Report.

3.3      Monitoring Results

The monitoring results for NMS2, NMS3B and NMS3C are recorded by Contract Nos. HY/2013/01, HY/2013/01 and HY/2013/04 respectively, and are reported in the monthly EM&A Reports prepared for Contract No. HY/2013/01.  No noise exceedances were recorded at stations NMS2, NMS3B and NMS3C by the ET of Contract Nos. HY/2013/01, HY/2013/01 and HY/2013/04 respectively during the reporting period.

 

 

4        Water Quality Monitoring

4.1      Monitoring Locations

The water quality monitoring works for the Contract are covered by Contract No. HY/2013/01 “Hong Kong-Zhuhai-Macao Bridge HKBCF – Passenger Clearance Building”.  A total of twenty-one stations (nine Impact Stations, seven Sensitive Receiver Stations and five Control/Far Field Stations) are covered by the current EM&A programme.  The ET of the Contract or another ET of the HZMB project is required to conduct water quality monitoring at these stations as part of EM&A programme if these monitoring stations are no longer covered under Contract No. HY/2013/01. Table 4.1 and Figure 4.1 shows the locations of water quality monitoring stations.

Table 4.1: Impact Water Quality Monitoring Stations

Station

Description

East

North

IS5

Impact Station (Close to HKBCF construction site)

811579

817106

IS(Mf)6

Impact Station (Close to HKBCF construction site)

812101

817873

IS7

Impact Station (Close to HKBCF construction site)

812244

818777

IS8

Impact Station (Close to HKBCF construction site)

814251

818412

IS(Mf)9

Impact Station (Close to HKBCF construction site)

813273

818850

IS10(N)

Impact Station (Close to HKBCF construction site)

812942

820881

IS(Mf)11

Impact Station (Close to HKBCF construction site)

813562

820716

IS(Mf)16

Impact Station (Close to HKBCF construction site)

814328

819497

IS17

Impact Station (Close to HKBCF construction site)

814539

820391

SR3(N)

Sensitive receivers (San Tau SSSI)

810689

816591

SR4(N)

Sensitive receivers (Tai Ho)

814705

817859

SR5(N)

Sensitive receivers (Artificial Reef in NE Airport)

812569

821475

SR6

Sensitive receivers (Sha Chau and Lung Kwu Chau Marine Park)

805837

821818

SR7

Sensitive receivers (Tai Mo Do)

814293

821431

SR10A(N)

Sensitive receivers (Ma Wan FCZ) 1

823644

823484

SR10B(N2)

Sensitive receivers (Ma Wan FCZ) 2

823689

823159

CS(Mf)3(N)

Control Station

808814

822355

CS(Mf)5

Control Station

817990

821129

CS4

Control Station

810025

824004

CS6

Control Station

817028

823992

CSA

Control Station

818103

823064

4.2      Monitoring Requirements

The monitoring requirements, monitoring equipment, monitoring parameters, frequency and duration, monitoring methodology, monitoring schedule, meteorological information are detailed in the monthly EM&A Reports prepared for Contract No. HY/2013/01.

The Action and Limit Levels for water quality are provided in Table 4.2.

Table 4.2: Action and Limit Levels for Water Quality

Parameters

Action

Limit

DO in mg L-1

(Surface, Middle & Bottom)

Surface and Middle

5.0

Bottom

4.7

Surface and Middle

4.2 (except 5 mg/L for FCZ)

Bottom

3.6

SS in mg L-1 (depth-averaged) at all monitoring stations and control stations

23.5 and 120% of upstream control station's SS at the same tide of the same day*

34.4 and 130% of upstream control station's SS at the same tide of the same day and 10mg/L for WSD Seawater intakes*

Turbidity in NTU

(depth-averaged)

27.5 and 120% of upstream control station's turbidity at the same tide of the same day*

47.0 and 130% of upstream control station's

Remarks:

*  Reference is made to EPD approval of adjustment of water quality assessment criteria issued and became           effective on 18 February 2013.

Notes:

1.     “depth-averaged” is calculated by taking the arithmetic means of reading of all three depths.

2.     For DO, non-compliance of the water quality limits occurs when monitoring result is lower than the limits.

3.     For turbidity, SS, non-compliance of the water quality limits occurs when monitoring result is higher than the limits.

4.     All the figures given in the table are used for reference only and the EPD may amend the figures whenever it is considered as necessary.

5.     The 1%-ile of baseline data for dissolved oxygen (surface and middle) and dissolved oxygen (bottom) are 4.2 mg/L and 3.6 mg/L respectively.

If exceedance(s) at these stations is/are recorded by the ET of the Contract or referred by the other ET under the HZMB project to the Contract, the ET of the Contract will carry out an investigation and findings will be reported in the monthly EM&A Report.

4.3      Monitoring Results and Exceedance Investigations

The monitoring results for the twenty-one monitoring stations are reported in the monthly EM&A Reports prepared for Contract No. HY/2013/01.

123 exceedances of water quality (consisting of 93 Action Level and 22 Limit Level exceedances of dissolved oxygen, one Action Level exceedance of turbidity and seven Action Level exceedances of suspended solids) were recorded by the Environmental Team of Contract No. HY/2013/01 during the reporting period and were referred to this Contract for follow-up. The ET of this Contract conducted investigations and the findings with respect to the Contract can be referred to the corresponding monthly EM&A Report prepared under Contract No. HY/2013/01.

Water quality exceedances recorded during the reporting period are summarised in Table 4.3.

Table 4.3: Action and Limit Level Exceedance for Water Quality

Date

Parameter

Station

Depth

Exceedance Recorded during Mid-ebb Tide

Exceedance Recorded during Mid-flood Tide

6 Aug 2018

DO

IS8

Bottom

Action Level

-

6 Aug 2018

DO

IS10(N)

Surface and Middle

Action Level

-

6 Aug 2018

DO

IS10(N)

Bottom

Limit Level

Limit Level

6 Aug 2018

DO

IS(Mf)11

Bottom

Limit Level

Action Level

6 Aug 2018

DO

IS17

Surface and Middle

Action Level

-

6 Aug 2018

DO

IS17

Bottom

Action Level

Action Level

6 Aug 2018

DO

SR4(N)

Surface and Middle

Action Level

-

6 Aug 2018

DO

SR4(N)

Bottom

Action Level

-

6 Aug 2018

DO

SR5(N)

Surface and Middle

Action Level

-

6 Aug 2018

DO

SR5(N)

Bottom

Action Level

Limit Level

6 Aug 2018

DO

SR6

Bottom

Action Level

-

6 Aug 2018

DO

SR10A(N)

Bottom

-

Action Level

8 Aug 2018

DO

IS5

Surface and Middle

Limit Level

-

8 Aug 2018

DO

IS5

Bottom

Limit Level

Action Level

8 Aug 2018

DO

IS7

Surface and Middle

Action Level

-

8 Aug 2018

DO

IS8

Bottom

Action Level

-

8 Aug 2018

DO

IS10(N)

Surface and Middle

Action Level

Action Level

8 Aug 2018

DO

IS10(N)

Bottom

Action Level

Action Level

8 Aug 2018

DO

IS(Mf)11

Surface and Middle

-

Action Level

8 Aug 2018

DO

IS(Mf)11

Bottom

Action Level

Action Level

8 Aug 2018

DO

IS(Mf)16

Surface and Middle

Action Level

-

8 Aug 2018

DO

IS17

Bottom

Action Level

-

8 Aug 2018

DO

SR4(N)

Bottom

Action Level

-

8 Aug 2018

DO

SR5(N)

Surface and Middle

Action Level

-

8 Aug 2018

DO

SR5(N)

Bottom

Action Level

Action Level

8 Aug 2018

DO

SR6

Surface and Middle

Action Level

Action Level

8 Aug 2018

DO

SR6

Bottom

Action Level

Action Level

8 Aug 2018

DO

SR10A(N)

Surface and Middle

Limit Level

Limit Level

8 Aug 2018

DO

SR10A(N)

Bottom

Action Level

Action Level

8 Aug 2018

DO

SR10B(N2)

Bottom

Action Level

-

10 Aug 2018

DO

IS(Mf)16

Bottom

Action Level

-

10 Aug 2018

DO

SR6

Surface and Middle

-

Action Level

10 Aug 2018

DO

SR10A(N)

Surface and Middle

-

Limit Level

10 Aug 2018

DO

SR10A(N)

Bottom

-

Action Level

10 Aug 2018

DO

SR10B(N2)

Surface and Middle

-

Limit Level

10 Aug 2018

SS

IS(Mf)6

Depth Average

-

Action Level

10 Aug 2018

SS

IS7

Depth Average

Action Level

-

10 Aug 2018

SS

SR10A(N)

Depth Average

-

Action Level

10 Aug 2018

SS

SR10B(N2)

Depth Average

-

Action Level

13 Aug 2018

DO

IS5

Surface and Middle

Action Level

-

13 Aug 2018

DO

IS(Mf)6

Surface and Middle

Action Level

-

13 Aug 2018

DO

IS10(N)

Surface and Middle

-

Action Level

13 Aug 2018

DO

IS(Mf)16

Surface and MIddle

-

Action Level

13 Aug 2018

DO

IS(Mf)16

Bottom

-

Action Level

13 Aug 2018

DO

IS17

Surface and Middle

-

Action Level

13 Aug 2018

DO

SR3(N)

Surface and Middle

Action Level

-

13 Aug 2018

DO

SR10A(N)

Surface and Middle

Limit Level

-

13 Aug 2018

DO

SR10B(N2)

Surface and Middle

Limit Level

Limit Level

13 Aug 2018

DO

SR10B(N2)

Bottom

-

Action Level

13 Aug 2018

SS

SR7

Depth Average

Action Level

-

15 Aug 2018

DO

IS10(N)

Surface and Middle

-

Action Level

15 Aug 2018

DO

SR10B(N2)

Surface and Middle

-

Limit Level

15 Aug 2018

DO

SR10B(N2)

Bottom

-

Action Level

15 Aug 2018

TURB

SR7

Depth Average

Action Level

-

17 Aug 2018

DO

IS17

Surface and Middle

Action Level

Action Level

17 Aug 2018

DO

SR4(N)

Surface and Middle

Action Level

-

17 Aug 2018

DO

SR10A(N)

Surface and Middle

Limit Level

-

17 Aug 2018

DO

SR10B(N2)

Surface and Middle

Limit Level

Limit Level

17 Aug 2018

DO

SR10B(N2)

Bottom

-

Action Level

20 Aug 2018

DO

IS5

Surface and Middle

Action Level

Action Level

20 Aug 2018

DO

IS5

Bottom

Action Level

Action Level

20 Aug 2018

DO

IS8

Bottom

Action Level

-

20 Aug 2018

DO

IS10(N)

Surface and Middle

Action Level

-

20 Aug 2018

DO

IS10(N)

Bottom

Action Level

Action Level

20 Aug 2018

DO

IS(Mf)11

Bottom

Action Level

Action Level

20 Aug 2018

DO

IS(Mf)16

Bottom

Action Level

-

20 Aug 2018

DO

SR3(N)

Surface and Middle

Action Level

-

20 Aug 2018

DO

SR3(N)

Bottom

Action Level

-

20 Aug 2018

DO

SR4(N)

Surface and Middle

Action Level

-

20 Aug 2018

DO

SR4(N)

Bottom

Action Level

Action Level

20 Aug 2018

DO

SR5(N)

Bottom

Action Level

Action Level

20 Aug 2018

DO

SR6

Bottom

Action Level

-

20 Aug 2018

DO

SR10A(N)

Surface and Middle

-

Limit Level

20 Aug 2018

DO

SR10A(N)

Bottom

Action Level

Action Level

20 Aug 2018

DO

SR10B(N2)

Surface and Middle

-

Limit Level

20 Aug 2018

DO

SR10B(N2)

Bottom

-

Action Level

22 Aug 2018

DO

IS5

Bottom

Action Level

Action Level

22 Aug 2018

DO

IS8

Bottom

Action Level

-

22 Aug 2018

DO

IS(Mf)16

Bottom

Action Level

-

22 Aug 2018

DO

IS17

Bottom

Action Level

Action Level

22 Aug 2018

DO

SR4(N)

Surface and Middle

Action Level

-

22 Aug 2018

DO

SR4(N)

Bottom

Action Level

-

22 Aug 2018

DO

SR10A(N)

Bottom

-

Action Level

22 Aug 2018

DO

SR10B(N2)

Bottom

-

Action Level

24 Aug 2018

DO

IS10(N)

Bottom

Action Level

-

24 Aug 2018

DO

SR4(N)

Bottom

Action Level

-

24 Aug 2018

DO

SR6

Surface and Middle

-

Action Level

24 Aug 2018

SS

IS8

Depth Average

-

Action Level

27 Aug 2018

DO

IS17

Bottom

Action Level

-

27 Aug 2018

DO

SR10B(N2)

Surface and Middle

-

Limit Level

27 Aug 2018

DO

SR10B(N2)

Bottom

-

Action Level

29 Aug 2018

DO

IS5

Surface and Middle

-

Action Level

29 Aug 2018

DO

IS7

Surface and Middle

-

Action Level

29 Aug 2018

DO

SR3(N)

Surface and Middle

Action Level

-

29 Aug 2018

DO

SR10B(N2)

Surface and Middle

-

Limit Level

29 Aug 2018

DO

SR10B(N2)

Bottom

-

Action Level

31 Aug 2018

DO

SR10B(N2)

Surface and Middle

-

Limit Level

31 Aug 2018

SS

IS(Mf)9

Depth Average

Action Level

-

The details of water quality exceedances can be referred to in the monthly EM&A Report under Contract No. HY/2013/01.

 

 

5        Dolphin Monitoring

5.1      Monitoring Locations

The dolphin monitoring works for the Contract are covered by Contract No. HY/2013/01 “Hong Kong-Zhuhai-Macao Bridge HKBCF – Passenger Clearance Building”.  The ET of the Contract or another ET of the HZMB project is required to conduct dolphin monitoring at the twenty-four transects as part of EM&A programme if these transects are no longer covered under Contract No. HY/2013/01. The dolphin monitoring should adopt line-transect vessel survey method. The survey follows pre-set and fixed transect lines in the two areas defined by AFCD as: Northeast Lantau survey area; and Northwest Lantau survey area.

Table 5.1 shows the co-ordinates for the transect lines and layout map.

The revised layout map showing the transect lines have been provided by AFCD and are shown in Figure 5.1.

Table 5.1: Impact Dolphin Monitoring Line Transect Co-ordinates (Provided by AFCD)

Transect

HK Grid System

Long Lat in WGS84

 

X

Y

Long

Lat

1#

804671

815456

113.870287

22.277678

 

804671

831404

113.869975

22.421696

2#^

805476

820800

113.877995

22.325951

 

805476

826654

113.877882

22.378815

3^

806464

821150

114.030267

22.196697

 

806464

822911

114.047344

22.196712

4^

807518

821500

114.033651

22.206219

 

807518

829230

114.108618

22.206267

5^

808504

821850

114.037037

22.215126

 

808504

828602

114.102523

22.215169

6^

809490

822150

114.039938

22.224033

 

809490

825352

114.070995

22.224056

7#^

810499

822000

114.038474

22.233143

 

810499

824613

114.063820

22.233163

8#

811508

821123

113.936539

22.328966

 

811508

824254

113.936486

22.357241

9#

812516

821303

113.946320

22.330606

 

812516

824254

113.946279

22.357255

10*

813525

820827

113.956112

22.326321

 

813525

824657

113.956066

22.360908

11#

814556

818853

113.966155

22.304858

 

814556

820992

113.966125

22.327820

12

815542

818807

113.975726

22.308109

 

815542

824882

113.975647

22.362962

13

816506

819480

113.985072

22.314192

 

816506

824859

113.985005

22.362771

14

817537

820220

113.995070

22.320883

 

817537

824613

113.995018

22.360556

15

818568

820735

114.005071

22.325550

 

818568

824433

114.005030

22.358947

16

819532

821420

114.014420

22.331747

 

819532

824209

114.014390

22.356933

17

820451

822125

114.023333

22.338117

 

820451

823671

114.023317

22.352084

18

821504

822371

114.033556

22.340353

 

821504

823761

114.033544

22.352903

19

822513

823268

114.043340

22.348458

 

822513

824321

114.043331

22.357971

20

823477

823402

114.052695

22.349680

 

823477

824613

114.052686

22.360610

21

805476

827081

113.877878

22.382668

 

805476

830562

113.877811

22.414103

22

806464

824033

113.887520

22.355164

 

806464

829598

113.887416

22.405423

23

814559

821739

113.966142

22.334574

 

814559

824768

113.966101

22.361920

24^

805476

815900

113.979368

22.187721

 

805476

819100

114.010398

22.187756

Remarks:

(a)    *     Due to the presence of deployed silt curtain systems at the site boundaries of the Contract, some of the transect lines shown in Figure 5.1 could not be fully surveyed during the regular survey. Transect 10 is reduced from 6.4km to approximately 3.6km in length due to the HKBCF construction site. Therefore the total transect length for both NEL and NWL combined is reduced to approximately 108km.

(b)    #     Coordinates for transect lines 1, 2, 7, 8, 9 and 11 have been updated in respect to the Proposal for Alteration of Transect Line for Dolphin Monitoring approved by EPD on 19 August 2015.

(c)    ^     The change of transect lines 2, 3, 4, 5, 6 and 7 and new transect line 24 were justified and verified by the ET Leader for Contract No. HY/2010/02 and the IEC respectively on 24 March 2017 and it was approved by EPD on 12 May 2017.

5.2      Monitoring Requirements

The monitoring requirements, monitoring equipment, monitoring parameters, frequency and duration, monitoring methodology, monitoring schedule, meteorological information are detailed in the monthly EM&A Reports prepared for Contract No. HY/2013/01.

The Action and Limit Levels for Chinese White Dolphin Monitoring are provided in Table 5.2 and Table 5.3, respectively.

 


Table 5.2: Action and Limit Levels for Chinese White Dolphin Monitoring - Approach to Define Action Level (AL) and Limit Level (LL)

 

North Lantau Social Cluster

 

NEL

NWL

Action Level

(STG < 70% of baseline) &

(ANI < 70% of baseline)

(STG < 70% of baseline) &

(ANI < 70% of baseline)

Limit Level

[(STG < 40% of baseline) & (ANI < 40% of baseline)] AND

[(STG < 40% of baseline) & (ANI < 40% of baseline)]

Table 5.3: Derived Value of Action Level (AL) and Limit Level (LL) for Chinese White Dolphin Monitoring

 

North Lantau Social Cluster

 

NEL

NWL

Action Level

(STG < 4.2) & (ANI < 15.5)

(STG < 6.9) & (ANI < 31.3)

Limit Level

[(STG < 2.4) & (ANI <8.9)] AND [ (STG < 3.9) & (ANI < 17.9)]

The event and action plan is provided in Appendix D.

If exceedance(s) at these survey transect(s) is/are recorded by the ET of the Contract or referred by the other ET under the HZMB project to the Contract, the ET of the Contract will carry out an investigation and findings will be reported in the monthly EM&A Report.

5.3      Monitoring Results

The monitoring results for dolphin monitoring during the reporting period are reported in the monthly EM&A Report (for the reporting period) prepared for Contract No. HY/2013/01.

 

 

 

6        Environmental Site and Audit

6.1      Site Inspection

Site Inspections were carried out on a weekly basis to monitor the implementation of proper environmental pollution control mitigation measures for the project. During the reporting period, site inspections were carried out on 8, 15, 20 and 29 August 2018.

When permanent soft landscaping works within the site boundaries of the Contract are commenced, construction phase landscape and visual mitigation measures would be implemented in accordance with the EP, EIA and EM&A Manual. Monitoring and audit of landscape and visual mitigation measures would be conducted bi-weekly in accordance with Section 14.2 of the Updated EM&A Manual for HKBCF (Version 1.0). Permanent soft landscaping works within the Contract site had not commenced during the reporting period.

Particular observations during the site inspections and corrective actions undertaken by the Contractor are described below.

30 July 2018

a.   Accumulation of general refuse was observed near P1202 area. Subsequently, the general refuse was cleared. The observation was closed on 8 August 2018.

b.   Loose general refuse was observed near P1005 area. Subsequently, the general refuse was cleared. The observation was closed on 8 August 2018.

8 August 2018

a.   Accumulation of general refuse near P803 area was observed. Subsequently, the general refuse was cleared. The observation was closed on 15 August 2018.

b.   Loose general refuse was observed near P909 area. Subsequently, the loose general refuse was cleared. The observation was closed on 15 August 2018.

15 August 2018

a.   A damaged NRMM label was observed on an excavator near P1001 area. a  Subsequently, the excavator was removed from site. The observation was closed on 20 August 2018.

b.   Accumulation of general refuse was observed near P1001 area. Subsequently, the general refuse was cleared. The observation was closed on 20 August 2018.

20 August 2018

a.   Construction materials with stagnant water was observed inside gully at Bridge D12. Subsequently, the construction waste inside gully at Bridge D12 was removed and larvicidal oil was applied to stagnant water. The observation was closed on 29 August 2018.

b.   Loose general refuse was observed at Bridge D13. Subsequently, the general refuse was removed. The observation was closed on 29 August 2018.

c.   Breaking works without watering was observed. Subsequently, the excavator with breaker was removed from site and no breaking works were observed. The observation was closed on 29 August 2018.

29 August 2018

a.   Chemical containers without drip trays were observed at Bridge D14. The Contractor was reminded to provide drip trays as soon as possible. Follow-up actions for the outstanding observation will be inspected during the upcoming site inspections and reported in the coming reporting period.

6.2      Advice on the Solid and Liquid Waste Management Status

The Contractor registered as a chemical waste producer for the Contract. Sufficient numbers of receptacles were available for general refuse collection and sorting. As a practical means, the disposal operation is managed by a single HKBCF contractor who is also responsible for applying dumping permit and its subsequent extension applications from EPD. Contract No. HY/2013/03 has been assigned to coordinate and arrange for disposal of extracted marine sediment from this Contract.

There was no generation of excavated sediment for treatment during this reporting period. Any treatment of excavated marine sediment will be conducted using cement solidification/ stabilization (Cement S/S) techniques and the treated sediment will be reused onsite for either backfilling or landscaping (e.g. berm material).

The monthly summary of waste flow table is detailed in Appendix E.

The Contractor was reminded that chemical waste containers should be properly treated and stored temporarily in designated chemical waste storage area on site in accordance with the Code of Practice on the Packing, Labelling and Storage of Chemical Waste.

6.2.1      Disposal of Marine Sediment Extracted from Bored Piling Works

6.2.1.1         Background

After the acceptance of the review of the approved Sediment Quality Report (SQR) for this Project under EPD letter dated 19 August 2015, an approval to dispose the marine sediment extracted from bored piling for this Project was then approved under memo from Secretary, Marine Fill Committee of CEDD dated 20 August 2015 for the disposal of marine sediment extracted from bored piling works. The disposal sites allocated to this Project are the Mud Pit CMP2 of the Confined Marine Sediment Disposal Facility to the South of The Brothers (or at the East of Sha Chau). As advised by CEDD in the memo dated 19 February 2016, from 00:00 on 22 March 2016 onward, the disposal space at CMP2 of the South of The Brothers is closed and all disposal of contaminated sediment is to be carried out at CMP Vd to the East of Sha Chau (ESC).

As Contract No. HY/2013/01 has commenced treatment of the extracted marine sediment, treatment will continue and the treated marine sediment will be re-used within the HKBCF Island. On the other hand, Contract Nos. HY/2013/02, HY/2013/03 and HY/2013/04 have not commenced the treatment of extracted marine sediment. Therefore the marine sediment extracted from these three Contracts will be disposed to the allocated disposal sites directly without treatment. As a practical means, the disposal operation is managed by one contractor who is also responsible for applying dumping permit and its subsequent extension applications from EPD. Contract No. HY/2013/03 has been assigned to coordinate and arrange for disposal of extracted marine sediment from all three Contracts.

The SQR was further reviewed in mid-2016. EPD has no comment to extend the validity of the SQR to August 2017 under letter dated 18 August 2016.

Based on the actual piling operation, the estimated quantity of marine sediment to be extracted has been revised from 85,000 m3 to 126,000 m3 (bulk volume). EPD has no comments on the request as in the letter dated 20 October 2016. The Secretary of Marine Fill Committee, CEDD approved the increasing quantity in the memo dated 10 November 2016.

During the course of reviewing the SQR, it was noted that the contamination level of the marine sediment extracted from the inner part of the HKBCF Island was not identified during the previous sampling and testing. As requested by EPD, sampling and testing are required. The Sediment Sampling and Testing Proposal (SSTP) for the inner area of the HKBCF Island was approved by EPD on 2 June 2016.

As in the agreed SSTP for the inner area of the HKBCF Island, samples were taken from the seventeen batches of stockpiled marine sediments and from five boreholes each in one of the five sampling grids. After conducting chemical tests on samples, six batches of stockpiled samples under Contract No. HY/2013/03 and all eight batches of stockpiled samples under Contract No. HY/20013/04 are classified as Category L sediment. The Secretary of Marine Fill Committee of CEDD allocated disposal sites under memo dated 24 October 2016 and dated 22 November 2016 for disposal of a total of 9,500 m3 in-situ volume of Category L sediment (using a bulk factor of 1.3). The Category L sediment was disposed in December 2016.

One sample from the batch of stockpiled marine sediment under Contract No. HY/2013/03 and samples from all five sampling grids had contamination levels exceeding the Lower Chemical Exceedance Levels (LCEL) and biological screenings were carried out. All samples passed the biological screenings and are classified as Category Mp sediment and to be disposed off site using Type II confined marine disposal method the same method used for marine sediment extracted from other part of the HKBCF Island.

6.2.1.2         Dumping Arrangements

The barge for disposal of marine sediment will morn at the temporary loading and unloading at the east shore of the HKBCF Island, which has been being used by reclamation contractor (Contract No. HY/2010/02) for reclamation activities. In terms of safety consideration, each dumping date will be allocated to one Contract. The quantity of marine sediment disposed on the date is from one Contract.

During dumping, each Contractor is responsible for transporting the marine sediment from his site area to the barge. The estimated quantity of marine sediment in each truck is confirmed by Resident Site Staff of each Contract. The trip tickets for transportation and disposal of marine sediment are collected and checked. Contract No. HY/2013/03 as the dumping permit holder is responsible for reporting to EPD the quantity disposed of as the condition stipulated in the dumping permit.

6.2.1.3         Reporting

AECOM has confirmed that the disposal of excavated marine sediments to allocated dumping site via Contract No. HY/2013/03 has been completed with the last batch disposal on 30 August 2017. The total quantities disposed are presented in the following table (Table 6.1):

Table 6.1: Summary of Marine Sediment disposed to Dumping Site via Contract No. HY/2013/03

 

Type of Sediment and Quantity Disposed (m3)

 

Cat. L (in Type I)

Type II

Total

3,570

39,814

Note:       For monthly breakdown of these quantities, please refer to the waste flow table in Appendix E.

6.3      Environmental Licenses and Permits

The valid environmental licenses and permits during the reporting period are summarized in Appendix F.

6.4      Implementation Status of Environmental Mitigation Measures

In response to the site audit findings, the Contractor carried out corrective actions.

A summary of the Implementation Schedule of Environmental Mitigation Measures (EMIS) is presented in Appendix G.  Most of the necessary mitigation measures were implemented properly.

Implementation status of the Regular Marine Travel Route Plan (RMTRP) was checked by ET. Training of marine travel route for marine vessel operator was given to relevant staff and relevant records were kept properly.

According to the Contractor of HY/2013/04, all marine-based segment deliveries were completed in January 2018 and no marine-based works were conducted under the contract during the reporting month. 

The localised silt curtains under this Contract were deployed on 15 July 2017. No dolphins were observed by the trained MMOs during the reporting month. Regarding the implementation of dolphin monitoring and protection measures (i.e. implementation of Dolphin Watching Plan, Dolphin Exclusion Zone and Silt Curtain Integrity Check), regular checking was conducted by the experienced MMOs within the works area to ensure no dolphin was trapped by the enclosed silt curtain systems. Any dolphin spotted within the enclosed silt curtain systems was reported and recorded. Relevant procedures were followed and measures were well implemented. Silt curtain systems were also inspected timely in accordance to the submitted plan. All inspection records were kept properly.

6.5      Summary of Exceedance of the Environmental Quality Performance Limit

Summary of Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level at AMS6 shall be referred to the monthly EM&A report prepared by Contract No. HY/2011/03.

There was no Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level recorded at station AMS7B by the Environmental Team of Contract No. HY/2013/01 during the reporting period.

There was no Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level recorded at station AMS3C by the Environmental Team of this Contract during the reporting period.

There was no Action and Limit Level exceedance for noise recorded at station NMS2 and station NMS3B by the Environmental Team of Contract No. HY/2013/01 during the reporting period.

There was no Action and Limit Level exceedance for noise recorded at station NMS3C by the Environmental Team of this Contract during the reporting period.

Water quality monitoring exceedances were recorded by the ET of Contract No. HY/2013/01 during the reporting period and were referred to this Contract for follow-up. The ET of this Contract conducted investigations and the findings with respect to the Contract can be referred to the corresponding monthly EM&A Report prepared under Contract No. HY/2013/01.

Impact dolphin monitoring results at all transects during the reporting period are reported in the monthly EM&A Report (for the reporting period) prepared for Contract No. HY/2013/01.

6.6      Summary of Complaints, Notification of Summons and Successful Prosecution

Complaints

There were no complaints received in relation to the environmental impact during the reporting period. The details of cumulative statistics of Environmental Complaints are provided in Appendix H.

Notification of Summons and Successful Prosecution

No notification of summons or prosecutions was received during the reporting period.

Statistics on notifications of summons and successful prosecutions are summarized in Appendix H.

 

 

7        Future Key Issues

7.1             Construction Programme for the Coming Months

As informed by the Contractor, the major construction activities for September 2018 are summarized in Table 7.1.

Table 7.1: Construction Activities for September 2018

Site Area

Description of Activities

HKBCF

   Erection of precast segments;

   Construction of parapets for bridge structures;

   Seawall reinstatement at Box Culvert D outfall (land-based);

   Construction of Abutment A1601 and associated retaining walls;

   Construction of Bridge D16 in-situ deck;

   Backfilling walls and formation of fill slopes and road embankment;

   Drainage works and watermains laying; and

   Roadworks and road furniture.

7.2             Environmental Site Inspection Schedule for the Coming Month

The tentative schedule for weekly site inspections for September 2018 is provided in Appendix I.

 

 

 

 

                        

8        Conclusions

8.1      Conclusions

General

Commencement of the Contract took place on 13 March 2015 and the construction works of the Contract commenced on 13 July 2015.

Breaches of Action and Limit Levels

Summary of Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level at AMS6 shall be referred to the monthly EM&A report prepared by Contract No. HY/2011/03.

There was no Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level recorded at station AMS7B by the Environmental Team of Contract No. HY/2013/01 during the reporting period.

There was no Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level recorded at station AMS3C by the Environmental Team of this Contract during the reporting period.

There was no Action and Limit Level exceedance for noise recorded at station NMS2 and station NMS3B by the Environmental Team of Contract No. HY/2013/01 during the reporting period.

There was no Action and Limit Level exceedance for noise recorded at station NMS3C by the Environmental Team of this Contract during the reporting period.

123 exceedances of water quality (consisting of 93 Action Level and 22 Limit Level exceedances of dissolved oxygen, one Action Level exceedance of turbidity and seven Action Level exceedances of suspended solids) were recorded by the Environmental Team of Contract No. HY/2013/01 during the reporting period and were referred to this Contract for follow-up. The ET of this Contract conducted investigations and the findings with respect to the Contract can be referred to the corresponding monthly EM&A Report prepared under Contract No. HY/2013/01.  

Impact dolphin monitoring results at all transects during the reporting period are reported in the monthly EM&A Report (for the reporting period) prepared for Contract No. HY/2013/01.

Environmental Site Inspections

Environmental site inspections were carried out on 8, 15, 20 and 29 August 2018. Recommendations on remedial actions were given to the Contractor for the deficiencies identified during the site inspections.

Complaints

There were no complaints received in relation to the environmental impact during the reporting period.

Notifications of Summons and Successful Prosecutions

There were no notifications of summons or prosecutions received during the reporting period.

 

 

 


Figures

 

 

 

Appendix A. Location of Works Areas

 

 

 

Appendix B. Project Organization for Environmental Works

 

 

 

Appendix C. Construction Programme

 

 

 

Appendix D. Event and Action Plan

 

 

 

Appendix E. Waste Flow Table

 

 

 

Appendix F. Environmental Licences and Permits

 

 

 

Appendix G. Implementation Schedule for Environmental Mitigation Measures (EMIS)

 

 

 

 

Appendix H. Statistics on Environmental Complaints, Notification of Summons and Successful Prosecutions

 

 

 

 

Appendix I. Environmental Site Inspection Schedule